ASOtitle

JUNE 2017 Sky Events Calendar

The ASO Monthly Calendar of Events and Astronomical Data
Calendar is based on the "Space Calendar" data presented by the
NASA Jet Propulsion Laboratory (JPL) http://www.jpl.nasa.gov/calendar/ and the Arkansas Sky Observatory  www.arksky.org Team.
If you would like for us to include your star parties or events, please send details via the CONTACT US button on the home page of ASO.


The Planets for June:
--------------------------------
Mercury - tiny Mercury is far too close to the sun for viewing all of June, moving northward toward the sun (as seen from Earth) each successive day of June, thus remaining masked in strong solar glare - in TAURUS

Venus - our brightest planet will be high in the dark sky about 4 a.m. local time; make sure to look for Venus VERY close to much dimmer and distant URANUS in the mornings of the first week of this month.  It will be due east and in the same finder field of view on the morning of June 2, but Venus will be moving slowly northward relative to Uranus each successive morning.  Brilliant Venus is minus 4.4 magnitude, far brighter than telescopic Uranus at only magnitude 6.  Venus is 55% illuminated as we see it from Earth and thus presents a "quarter moon" appearance - in PISCES

Mars - tiny this month and in solar conjunction, Mars is not a viewable object until 2018 - in GEMINI

Jupiter - dominating the evening western skies is bright Jupiter, still large and favorable for viewing until it sets about midnight.  It is high overhead at evening's dusk and low in western skies by dark this month - in VIRGO

Saturn - appearing as a very brilliant yellow star, Saturn is nearly overhead for northern observers at midnight and reaches OPPOSITION on June 16....a very favorable June 2017 for viewing this magnificent planet.  Rising in the east at sundown, this is a perfect target for all star parties, although a very low southerly opposition for northern observers - in OPHIUCHUS

Uranus - distant planet Uranus rises about 3 a.m. local time and shines at magnitude 5.9, bright enough to spot in good binoculars if one knows where to look; use a good planetarium sky program or GO TO telescope to locate this distant world; by sunrise it is high in eastern skies and will show a faint, blue disk in large telescopes.  NOTE:  see VENUS above - in PISCES

Neptune - look for faint Neptune in large telescopes at midmonth rising aout 1:30 a.m. local time; in PISCES

Pluto - at magnitude 14.1, our most distant planet (yes....it is a planet) is very low in southern skies, south of overhead about 3:30 a.m. local time; only 12 inch and larger telescopes can spot this world visually. - in SAGITTARIUS

NOTE:  for locating all of the faint planets I highly recommend a good computer planetarium program or a suitalbe Sky APP for your smart devices!

Comet Possiblities for June:
There are dozens of observable comets visible every month, in every part of the sky.  A moderate-sized telescope and CCD camera can easily record comets down to magnitude 18, of which there will be a good selection every night, provided that you know WHERE in the sky they are.  Thus a good PC planetarium program with your GO TO telescope or to plot visually is essential.  The comets can be updated in yor programs daily by downloading the current data into your database from the Minor Planet Center (MPC) via the link:
http://www.minorplanetcenter.net/iau/Ephemerides/SoftwareEls.html
This will allow access to all visible comets for any given date.

COMET 2015 V2 (Johnson) - This comet has exceeded all expectations and it will transit just south of overhead at 08:30 local time in the contellation of VIRGO; the comet is expected to be visible easily in binoculars with a long SE streaming tail; at best the comet may reach naked eye visibility as it moves closer to the sun.

COMET 41P (Tuttle-Giacobini-Kresak) - followed closely by ASO during the winter of 2016 and spring of 2017, this comet continues to be a favorite, with a very strong and dense coma at magnitude 12-13 and visible in most moderate sized telescopes, and easily images with CCD.  High overhead in the constellation of Ophiuchus by about 1 a.m. local time

In addition, a listing of "Observable Comets" is availale from MPC from the link:  http://www.minorplanetcenter.net/iau/lists/LastCometObs.html
In the case of a new and exciting/bright comet that may unexpectedly enter our skies, ALWAYS refer to the ALERTS link on the ASO Home Page.

For the latest observations, magnitudes and physical characteristics of most of the best comets, always look to the ASO Comet Database for accurate information:
http://www.arksky.org/comet-data

METEOR SHOWERS for June 2017:
 
Observe when the moon does not interfere and attempt to observe AFTER midnight for most meteors to be seen!  For June, there are no less than 13 (!!) meteor showers, some of which provide for wonderful spring sky shows, provided that the light of the moon does not interfere.  However, as with a months and times during the year, observers should always be aware that new sporadic meteor showers can occur at anytime from seemingly unknown sources and radiants.
 
June 3 - Tau Herculid Meteors - Beginning in late may and extending through June, this is a month-long minor meteor shower, overhead for mid-northern latitudes at about 10 a.m.; this will be a poor month for observing these meteors, since the moon will be gibbous and in the sky all night;  the meteor shower is overhead at midnight when most of the 15 meteors per hours might be seen.  
 
June 4 - Alpha Circinid Meteors - This southern hemisphere meteor shower does produce some long-trailed meteors that can be seen low in northern hemisphere skies, traveling from south to north; it was discovered in 1977 by Australian amateur astronomers when 15 very swift meteors were noted per hour; for southern latitudes north of the equator, the meteor shower radiant is actually above the southern horizon at Midnight, so only the brightest meteors can be seen....this shower is in need of observation and continued confirmation.  The moon will hamper observations this year.

June 5 - Scorpiid Meteors - A very interesting meteor shower with TWO radiants rather than just one as is typically found with annual meteor showers; both radiants are nearly on the meridian at midnight, so observers are suggested to put their feet to the south and look overhead for these meteors; about 3 a.m. local time (the moon will be strong in the sky all night this year!...); in dark skies observers should normally see at least 20 meteors per hour when the moon is absent.  Note that not only are the number of meteors impressive with this shower, but also the sky itself, since the meteors will be coming from near the summer Milky Way star clouds, revealing one of the richest star fields visible to the naked eye and camera.  Best to begin observations about 10 p.m. and continue until 3 a.m. local time; radiant average is at R.A. 16h 40m; DEC -17 degrees.   .

June 7 - Arietid Meteors - From the constellation of Aries, this is another month-long meteor shower, and can peak on this date with as many as 60 meteors per hour in dark skies. This has been confirmed by radar, but less than that number can be expected visually, perhaps up to 30.  Wait until about 3 a.m. local time to assure that the radiant (low on the eastern horizon) is high enough above local haze and moisture to reveal these meteors.  These are very fine, slow meteors which leave spectacular trains, and frequently split into Bolides, or "fireballs."  The fireballs should be easily seen in all areas of the sky, although the radiant is nearly overhead about the time of peak. This is a great year to attempt to observe these meteors since the moon is near new....... the fireballs can typically be seen in spite of bright moonlight.
 
June 7 - Zeta Perseid Meteors - On the same night as the Arietids, this meteor shower is less spectacular, with perhaps 15 per hour visible in ealiest pre-dawn skies; radar reveals as many as 40 per hour after sunrise.
 
June 8 - Librid Meteors - A very minor meteor shower from a very large constellation, expect only a few per hour; evidence suggests that this meteor cloud might be dissipating, and no known cometary source is associated with this minor display; observations are badly needed.  Coordinates of radiant:  R.A. 15h 09m; DEC -28 degrees.  The moon will interfere with observations this year.
 
June 11 - Sagittariid Meteors - This is a two-week-long meteor shower beginning in earely June; unfortunately in 2017, the full moon will will be a factor in observing these meteors. The radiant rises in the extreme SE sky about 11 p.m. local time and about a dozen meteors per hour in dark skies might be expected.   VERY low in the southern skies for northern observers, at -35 degrees DEC.
 
June 13 - Theta Ophiuchid Meteors - Coming from the border of Ophiuchus, Sagittarius, and Scorpius, this radiant rises about 9 p.m., giving a window of good observing ALL NIGHT in spite of strong moonlight;  hence, onlt the brighter members of this showe will be seen this yearr.  However, those that do grace our skies are bright and spectacular, so be alert to these meteors if you are observing and happen upon a fireball from this area.
 
June 16 - June Lyrid Meteors - This is a companion meteor shower to the more-active May Lyrid meteors; this year will be an excellent year for the June Lyrids, since the moon will be quarter and will interfere with this meteor shower after midnight.   The radiant is nearly directly overhead at midnight near the bright star Vega for mid-northern latitudes; since most of these meteors are very faint, observations will be poor this year with strong moonlight interfering.  This is but one of many meteor showers that have been discovered by amateur astronomers since 1960....this one has been seen every year since 1966.
 
June 20 - Ophiuchid Meteors - A very good year for this shower, since the moon is now a thin crescent and rising just hours before dawn.  The radiant rises highest in the sky at 11:25 p.m. local time.  The radiant sets about sun-up, so few meteors should be seen throughout our skies throughout this year's "window"; this is an interesting meteor shower since the number per hour can vary from as few as 8 per hour to over 26 per hour on any given year.
 
June 26 - Corvid Meteors - Very good prospects this year, since the  moon's light will be absent from the sky and rising only a short time before dawn.  This is one of the shortest duration of all meteor showers, lasting only 5 days at most, with perhaps 10 meteors per hour seen to any observer; these originate near the small constellation trapezoid of Corvus, the Crow and the last good showing was in 1937.  Astronomers speculate that these meteors are a product of some as-yet undiscovered comet.  Since it has been years since a good showing and since the source is unknown, this is a very important meteor shower for a group project.  Radiant: R.A. 12h 48m; DEC -19 degrees.
 
June 29 - Beta Taurid Meteors - Here is a different type of meteor shower....one you CAN'T see~!  This is a daylight meteor storm that is of interest to those with ham radios, or those with long-distance shortwave receivers tuned to a distant station toward the direction of the radiant (Taurus. R.A. 05h 44m; DEC +19 degrees); ham operators have recorded a dependable 30+ meteors per hour each year.  BUT.....at least the moon can't interfere with THIS one!
 
June 30 - June Draconid Meteors - This is a fair year for for observers this month in terms of sky position because moonlight will light the sky in early eveing hours.   Known in the past as the "Pons-Winnecke Meteors" (from the comet of origin), this can be an incredibly spectacular meteor shower; in 1916 over 100 very bright meteors were seen in fireworks style, but it appears that the numbers may be waning as years progress.  Being irregular, observers are cautioned that there may be as few as 10 per hour or well over 100 per hour; with the high declinations (radiant:  R.A. 15h 12m, DEC +49 degrees), the shower will rise about the beginning of astronomical darkness and be in the sky all night long, highest just after midnight in high northern skies.  A fair year for this one.... but look for the brighter ones maybe high in northern skies!

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YOUR SKY CALENDAR FOR JUNE 2017

JUNE 01 - FIRST QUARTER MOON -07:42 a.m. CDT
Jun 01 - Moon Occults Asteroid 16 Psyche
Jun 01 - Comet 71P/Clark At Opposition (0.598 AU)
Jun 01 - Comet P/2009 Q4 (Boattini) At Opposition (3.648 AU)
Jun 01 - Apollo Asteroid 418094 (2007 WV4) Near-Earth Flyby (0.020 AU)
Jun 01 - Asteroid 8088 Australia Closest Approach To Earth (1.480 AU)
Jun 01 - Apollo Asteroid 2101 Adonis Closest Approach To Earth (1.664 AU)
Jun 01 - Asteroid 4487 Pocahontas Closest Approach To Earth (2.098 AU)
Jun 02 - Venus Passes 1.8 Degrees From Uranus
Jun 02 - Comet 73P-W/Schwassmann-Wachmann Perihelion (0.965 AU)
Jun 02 - Comet C/2016 S1 (PANSTARRS) Closest Approach To Earth (2.218 AU)
Jun 02 - Comet 234P/LINEAR Perihelion (2.848 AU)
Jun 02 - Asteroid 13188 Okinawa Closest Approach To Earth (1.060 AU)
Jun 02 - Asteroid 3709 Polypoites Closest Approach To Earth (4.603 AU)
Jun 02 - Kuiper Belt Object 278361 (2007 JJ43) At Opposition (40.059 AU)
Jun 02 - Lecture: The Origin of the Elements, Pasadena, California
Jun 02-07 - 14th International Conference: Geometry, Integrability and Quantization, Varna, Bulgaria
Jun 03 - Venus At Its Greatest Western Elongation (46 Degrees)
Jun 03 - Comet C/2015 T4 (PANSTARRS) At Opposition (3.277 AU)
Jun 03 - Asteroid 8844 (1990 QR2) Occults HIP 95408 (6.0 Magnitude Star)
Jun 03 - Apollo Asteroid 1685 Toro Closest Approach To Earth (1.358 AU)
Jun 03 - Asteroid 293934 MPIA Closest Approach To Earth (1.758 AU)
Jun 03-04 - 37th BIS Soviet/Chinese Technical Forum 2017, London, United Kingdom
Jun 03-04 - Dawn of Private Space Science Symposium, New York, New York
Jun 04 - Cassini, Distant Flyby of Pan & Epimetheus
Jun 04 - Comet 172P/Yeung Closest Approach To Earth (2.355 AU)
Jun 04 - Asteroid 4559 Strauss Closest Approach To Earth (2.127 AU)
Jun 04 - 15th Anniversary (2002), Mike Brown, Chad Trujillo's Discovery of 50000 Quaoar
Jun 04-08 - 230th American Astronomical Society (AAS) Meeting, Austin Texas
Jun 04-25 - Workshop: Information in Quantum Field Theory, Aspen, Colorado
Jun 05 - Comet C/2015 V2 (Johnson) Closest Approach To Earth (0.811 AU)
Jun 05 - Comet 172P/Yeung At Opposition (2.355 AU)
Jun 05 - Comet 169P/NEAT Closest Approach To Earth (2.552 AU)
Jun 05 - Asteroid 4150 Starr Closest Approach To Earth (1.053 AU)
Jun 05 - Asteroid 231307 Peterfalk Closest Approach To Earth (1.980 AU)
Jun 05 - Asteroid 1941 Wild Closest Approach To Earth (3.137 AU)
Jun 05 - Jupiter Trojan Asteroid 5254 Ulysses Closest Approach To Earth (4.830 AU)
Jun 06 - Comet C/2016 A8 (LINEAR) At Opposition (2.718 AU)
Jun 06 - Comet P/1996 R2 (Lagerkvist) At Opposition (2.973 AU)
Jun 06 - Apollo Asteroid 2012 HN13 Near-Earth Flyby (0.073 AU)
Jun 06 - Asteroid 1886 Lowell Closest Approach To Earth (1.310 AU)
Jun 06 - Asteroid 1756 Giacobini Closest Approach To Earth (1.938 AU)
Jun 06 - Asteroid 2046 Leningrad Closest Approach To Earth (2.219 AU)
Jun 06-08 - Global Space Exploration Conference 2017 (GLEX), Beijing, China
Jun 06-09 - Symposium: The X-ray Universe 2017, Rome, Italy
Jun 07 - Comet 75D/Kohoutek At Opposition (4.222 AU)
Jun 07 - Asteroid 13070 Seanconnery Closest Approach To Earth (1.249 AU)
Jun 07 - Apollo Asteroid 2063 Bacchus Closest Approach To Earth (1.418 AU)
Jun 07 - Asteroid 7032 Hitchcock Closest Approach To Earth (1.474 AU)
Jun 07 - Asteroid 7291 Hyakutake Closest Approach To Earth (2,533 AU)
Jun 07 - Kuiper Belt Object 2010 KZ39 At Opposition (45.079 AU)
Jun 07-08 - Fermilab 50th Anniversary Symposium and Users Meeting, Batavia, Illinois
Jun 07-16 - 60th session of the Committee on the Peaceful Uses of Outer Space, Vienna, Austria
Jun 08 - World Oceans Day
Jun 08 - Comet 73P-BS/Schwassmann-Wachmann Near-Earth Flyby (0.056 AU)
Jun 08 - Comet 121P/Shoemaker-Holt At Opposition (4.267 AU)
Jun 08 - Apollo Asteroid 2011 PU1 Near-Earth Flyby (0.061 AU)
Jun 08 - Asteroid 82332 Las Vegas Closest Approach To Earth (1.734 AU)
Jun 08 - Asteroid 9012 Benner Closest Approach To Earth (2.207 AU)
JUNE 09 - FULL MOON - 08:10 CDT
Jun 09 - Comet 138P/Shoemaker-Levy At Opposition (3.698 AU)
Jun 09 - Asteroid 5203 Pavarotti Closest Approach To Earth (0.931 AU)
Jun 09 - Asteroid 7462 Grenoble Closest Approach To Earth (1.499 AU)
Jun 09 - Asteroid 4766 Malin Closest Approach To Earth (1.914 AU)
Jun 09 - Neptune Trojan 2013 KY18 At Opposition (29.186 AU)
Jun 10 - Cassini, Distant Flyby of Pan & Janus
Jun 10 - Comet P/2011 A2 (Scotti) Closest Approach To Earth (2.229 AU)
Jun 10 - Comet 47P/Ashbrook-Jackson Perihelion (2.817 AU)
Jun 10 - Comet 268P/Bernardi At Opposition (4.110 AU)
Jun 10 - Asteroid 2830 Greenwich Closest Approach To Earth (1.295 AU)
Jun 10 - Asteroid 5790 Nagasaki Closest Approach To Earth (1.527 AU)
Jun 10 - Asteroid 6373 Stern Closest Approach To Earth (1.635 AU)
Jun 10 - Asteroid 44016 Jimmypage Closest Approach To Earth (2.048 AU)
Jun 10 - Asteroid 115561 Frankherbert Closest Approach To Earth (2.103 AU)
Jun 10 - Asteroid 1578 Kirkwood Closest Approach To Earth (3.846 AU)
Jun 10 - Kuiper Belt Object 174567 Varda At Opposition (45.891 AU)
Jun 11 - Comet 71P/Clark Closest Approach To Earth (0.590 AU)
Jun 11 - Comet 233P/La Sagra At Opposition (3.058 AU)
Jun 11 - Comet 200P/Larsen At Opposition (3.891 AU)
Jun 11 - Asteroid 1772 Gagarin Closest Approach To Earth (1.444 AU)
Jun 11 - Asteroid 4305 Clapton Closest Approach To Earth (1.970 AU)
Jun 11 - Asteroid 2127 Tanya Closest Approach To Earth (2.117 AU)
Jun 11-Jul 02 - Workshop: The Packing of Continua, Aspen, Colorado
Jun 12 - 50th Anniversary (1967), Venera 4 Launch (Soviet Venus Lander)
Jun 12 - Comet C/2015 V2 (Johnson) Perihelion (1.637 AU)
Jun 12 - Comet 289P/Blanpain At Opposition (4.106 AU)
Jun 12 - Asteroid 1674 Groeneveld Occults HIP 42516 (6.4 Magnitude Star)
Jun 12 - Asteroid 1006 Lagrangea Closest Approach To Earth (2.556 AU)
Jun 12 - Jupiter Trojan Asteroid 1143 Odysseus Closest Approach To Earth (4.681 AU)
Jun 13 - Comet 73P-AI/Schwassmann-Wachmann Perihelion (0.964 AU)
Jun 13 - Comet P/1999 XN120 (Catalina) Perihelion (3.297 AU)
Jun 13 - Comet C/2015 O1 (PANSTARRS) At Opposition (3.552 AU)
Jun 13 - Comet 64P/Swift-Gehrels At Opposition (3.589 AU)
Jun 13 - Asteroid 3355 Onizuka Closest Approach To Earth (1.318 AU)
Jun 13 - Asteroid 397 Vienna Closest Approach To Earth (1.739 AU)
Jun 13 - Asteroid 51823 Rickhusband Closest Approach To Earth (2.647 AU)
Jun 14 - 50th Anniversary (1967), Mariner 5 Launch (Venus Flyby Mission)
Jun 14 - Progress MS-6 Soyuz-2.1a Launch (International Space Station 67P)
Jun 14 - Asteroid 5066 Garradd Closest Approach To Earth (0.622 AU)
Jun 14 - Atira Asteroid 2007 EB26 Closest Approach To Earth (0.882 AU)
Jun 14 - Asteroid 3834 Zappafrank Closest Approach To Earth (1.155 AU)
Jun 14 - Asteroid 11334 Rio de Janeiro Closest Approach To Earth (1.357 AU)
Jun 14 - Asteroid 6546 Kaye Closest Approach To Earth (2.105 AU)
Jun 14 - Asteroid 1691 Oort Closest Approach To Earth (2.576 AU)
Jun 14 - Asteroid 1268 Libya Closest Approach To Earth (3.315 AU)
** Jun 15 - Saturn At Opposition
Jun 15 - Comet P/2001 R6 (LINEAR-Skiff) At Opposition (2.890 AU)
Jun 15 - Comet P/1996 R2 (Lagerkvist) Closest Approach To Earth (2.961 AU)
Jun 15 - Asteroid 22903 Georgeclooney Closest Approach To Earth (1.346 AU)
Jun 15 - Asteroid 2952 Lilliputia Closest Approach To Earth (1.578 AU)
Jun 15 - Lecture: The Golden Age of Exploration, Pasadena, California
Jun 15 - Lecture: The Total Solar Eclipse of 2017, Washington DC
Jun 15 - 265th Anniversary (1752), Ben Franklin's Kite-Flying Lightning Experiment
Jun 16 - Moon Occults Neptune
Jun 16 - Comet 150P/LONEOS At Opposition (2.204 AU)
Jun 16 - Comet P/2016 J3 At Opposition (3.464 AU)
Jun 16 - Apollo Asteroid 2010 VB1 Near-Earth Flyby (0.026 AU)
Jun 16 - Asteroid 1322 Coppernicus Closest Approach To Earth (0.860 AU)
Jun 16 - Asteroid 3949 Mach Closest Approach To Earth (1.167 AU)
Jun 16 - Amor Asteroid 9950 ESA Closest Approach To Earth (1.412 AU)
Jun 16 - Asteroid 16761 Hertz Closest Approach To Earth (1.735 AU)
Jun 16 - Plutino 28978 Ixion At Opposition (38.699 AU)
Jun 16 - Lecture: The Golden Age of Exploration, Pasadena, California
JUNE 17 - LAST QUARTER MOON - 06:33 a.m. CDT
Jun 17 - Cassini, Distant Flyby of Prometheus, Atlas & Daphnis
Jun 17 - Asteroid 3651 Friedman Closest Approach To Earth (1.217 AU)
Jun 17 - Asteroid 14967 Madrid Closest Approach To Earth (0.587 AU)
Jun 17 - Asteroid 2925 Beatty Closest Approach To Earth (1.644 AU)
Jun 17 - Asteroid 10867 Lima Closest Approach To Earth (1.702 AU)
Jun 17 - Asteroid 12757 Yangtze Closest Approach To Earth (1.807 AU)
Jun 17-18 - Gordon Research Seminar: Origins of Solar Systems, South Hadley, Massachusetts
Jun 18 - Comet 73P-BS/Schwassmann-Wachmann Perihelion (0.963 AU)
Jun 18 - Comet 78P/Gehrels At Opposition (3.413 AU)
Jun 18 - Apollo Asteroid 471984 (2013 UE3) Near-Earth Flyby (0.049 AU)
Jun 18 - Asteroid 8564 Anomalocaris Closest Approach To Earth (2.154 AU)
Jun 19 - Comet 185P/Petriew At Opposition (1.725 AU)
Jun 19 - Comet 90P/Gehrels Perihelion (2.975 AU)
Jun 19 - Comet P/2005 R1 (NEAT) At Opposition (3.183 AU)
Jun 19 - Asteroid 8084 Dallas Closest Approach To Earth (2.286 AU)
Jun 19 - Centaur Object 5145 Pholus At Opposition (26.390 AU)
Jun 20 - Comet 223P/Skiff At Opposition (3.337 AU)
Jun 20 - Comet P/2009 SK280 (Spacewatch-Hill) At Opposition (3.773 AU)
Jun 20 - Comet P/2010 U2 (Hill) At Opposition (3.968 AU)
Jun 20 - Apollo Asteroid 2015 YC1 Near-Earth Flyby (0.084 AU)
Jun 20 - Asteroid 477 Italia Closest Approach To Earth (1.184 AU)
Jun 20 - Aten Asteroid 2013 ND15 (Venus Trojan) Closest Approach To Earth (1.199 AU)
** Jun 21 - Summer Solstice, 04:24 UT
Jun 21 - Comet C/2016 B1 (NEOWISE) At Opposition (2.971 AU)
Jun 21 - Asteroid 165347 Philplait Closest Approach To Earth (1.489 AU)
Jun 21 - Asteroid 3062 Wren Closest Approach To Earth (2.136 AU)
Jun 21 - Kuiper Belt Object 50000 Quaoar At Opposition (41.915 AU)
Jun 22 - Moon Occults Aldebaran
Jun 22 - Comet 227P/Catalina-LINEAR Perihelion (1.788 AU)
Jun 22 - Centaur Object 10199 Chariklo Occults 2UCAC 18533636 (14.6 Magnitude Star)
Jun 22 - Apollo Asteroid 2010 VZ11 Near-Earth Flyby (0.079 AU)
Jun 22 - Apollo Asteroid 2102 Tantalus Closest Approach To Earth (0.332 AU)
Jun 22 - Apollo Asteroid 24761 Ahau Closest Approach To Earth (1.455 AU)
Jun 22 - Asteroid 8373 Stephengould Closest Approach To Earth (3.064 AU)
Jun 22 - Teleconference: Astronomy and Astrophysics Advisory Committee (AAAC) Meeting
JUNE 23 - NEW MOON - 09:31 p.m. CDT

Jun 23 - Comet P/2009 SK280 (Spacewatch-Hill) Closest Approach To Earth (3.771 AU)
Jun 23 - Asteroid 6459 Hidesan Occults HIP 91117 (3.8 Magnitude Star)
Jun 23 - Asteroid 7086 Bopp Closest Approach To Earth (1.089 AU)
Jun 23 - Asteroid 10389 Robmanning Closest Approach To Earth (1.197 AU)
Jun 23 - Asteroid 9769 Nautilus Closest Approach To Earth (1.232 AU)
Jun 23 - Asteroid 878 Mildred Closest Approach To Earth (1.313 AU)
Jun 23 - Asteroid 78905 Seanokeefe Closest Approach To Earth (1.846 AU)
Jun 23 - Asteroid 4969 Lawrence Closest Approach To Earth (2.848 AU)
Jun 24 - Aten Asteroid 441987 (2010 NY65) Near-Earth Flyby (0.020 AU)
Jun 24 - Aten Asteroid 2014 OL339 Closest Approach To Earth (0.282 AU)
Jun 24 - Asteroid 3656 Hemingway Closest Approach To Earth (0.890 AU)
Jun 24 - Asteroid 8209 Toscanelli Closest Approach To Earth (1.172 AU)
Jun 24 - Apollo Asteroid 4257 Ubasti Closest Approach To Earth (1.759 AU)
Jun 24 - Asteroid 5703 Hevelius Closest Approach To Earth (1.910 AU)
Jun 24 - Asteroid 588 Achilles (Jupiter Trojan) Closest Approach To Earth (4.964 AU)
Jun 25 - Cassini, Distant Flyby of Titan
Jun 25 - Comet 73P-Q/Schwassmann-Wachmann Perihelion (0.963 AU)
Jun 25 - Comet 243P/NEAT At Opposition (2.484 AU)
Jun 25 - Comet P/2000 S1 (Skiff) Perihelion (2.536 AU)
Jun 25 - Comet 131P/Mueller At Opposition (2.893 AU)
Jun 25 - Asteroid 50240 Cortina Closest Approach To Earth (1.647 AU)
Jun 26 - Comet P/2011 A2 (Scotti) At Opposition (2.263 AU)
Jun 26 - Apollo Asteroid 2005 LW3 Near-Earth Flyby (0.084 AU)
Jun 26 - Apollo Asteroid 10563 Izhdubar Closest Approach To Earth (0.690 AU)
Jun 26 - Asteroid 3356 Resnik Closest Approach To Earth (0.928 AU)
Jun 26-Jul 21 - 2017 Exoplanet Summer Program, Santa Cruz, California
Jun 27 - Comet 335P/Gibbs At Opposition (3.407 AU)
Jun 27 - Comet Comet 342P/SOHO At Opposition (3.408 AU)
Jun 27 - Comet C/2015 O1 (PANSTARRS) Closest Approach To Earth (3.517 AU)
Jun 27 - Asteroid 3356 Resnik Closest Approach To Earth (0.930 AU)
Jun 27 - Asteroid 5961 Watt Closest Approach To Earth (1.486 AU)
Jun 27 - Asteroid 2875 Lagerkvist Closest Approach To Earth (1.950 AU)
Jun 27 - 15th Anniversary (1997), NEAR, Asteroid Mathilde Flyby
Jun 27 - 35th Anniversary (1982), STS-4 Launch (Space Shuttle Columbia, DOD)
Jun 28 - Mercury Passes 0.8 Degrees from Mars
Jun 28 - Moon Occults Regulus
Jun 28 - Comet 129P/Shoemaker-Levy Closest Approach To Earth (3.544 AU)
Jun 28 - Asteroid 3 Juno Occults 2UCAC 30236948 (12.8 Magnitude Star)
Jun 28 - Centaur Object 10370 Hylonome At Opposition (22.688 AU)
Jun 28-29 - MilSatCom USA Conference, Arlington, Virginia
Jun 29 - Kanopus-V-IK 1/ AISSat 3/ CICERO 1/ Corvus-BC 1 & 2/ Perseus-O 1-4/ MKA-N 1 & 2/ Mayak Soyuz-2-1a Fregat-M Launch
Jun 29 - Moon Occults Asteroid 16 Psyche
Jun 29 - Comet 336P/McNaught Closest Approach To Earth (1.951 AU)
Jun 29 - Asteroid 990 Yerkes Closest Approach To Earth (1.583 AU)
Jun 29 - Asteroid 2244 Tesla Closest Approach To Earth (2.071 AU)
JUNE 30 - FIRST QUARTER MOON - (second 1st quarter moon of June!) - 07:51 p.m. CDT
Jun 30 - Asteroid Day 2017

Jun 30 - Chinasat 9A CZ-3B/E Launch (China)
Jun 30 - Cassini, Distant Flyby of Pan, Daphnis, Prometheus & Janus
Jun 30 - Comet 73P-Q/Schwassmann-Wachmann Closest Approach To Earth (0.110 AU)
Jun 30 - Comet 71P/Clark Perihelion (1.586 AU)
Jun 30 - Comet P/2001 R6 (LINEAR-Skiff) Closest Approach To Earth (2.859 AU)
Jun 30 - Comet 129P/Shoemaker-Levy At Opposition (3.545 AU)
Jun 30 -Updated[Apr 17] Atira Asteroid 2007 EB26 Closest Approach To Earth (0.893 AU)
Jun 30 - Asteroid 39882 Edgarmitchell Closest Approach To Earth (1.383 AU)
Jun 30 - Asteroid 4783 Wasson Closest Approach To Earth (2.055 AU)
Jun 30 - Asteroid 16529 Dangoldin Closest Approach To Earth (2.140 AU)
Jun 30 - Neptune Trojan 2008 LC18 At Opposition (31.442 AU)
Jun 30 - 45th Anniversary (1972), 1st Leap Second

Jun 30 - Robert Ballard's 75th Birthday (1942)
Jun 30-Jul 03 - Royal Astronomical Society of Canada (RASC) 2017 General Assembly, Ottawa, Canada

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Wishing you clearest skies and brightest comets.....

Dr. Clay
Arkansas Sky Observatories
10 Observatory Hill Drive, Petit Jean Mt.
MPC/cbat Obs. H41 / Petit Jean Mountain
MPC/cbat Obs. H45 / Petit Jean Mountain South
MPC/cbat Obs. H43 / Conway
MPC/cbat Obs. H44 / Cascade Mountain
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