ASTEROID 4179 TOUTATIS
Scheduling a Brief - and Close - Encounter With Earth
 
by
P. Clay Sherrod
Arkansas Sky Observatory Petit Jean Mountain (H41)
B. Morgan Sherrod
Arkansas Sky Observatory Cascade Mountain (H44)
 
UPDATED 20 Sep 2004
 

CLICK HERE FOR VERY LATEST ELEMENTS AND INFORMATION

 
Have you heard the latest?  There is a city-sized asteroid - some 3 miles long - headed toward Earth with a better than 6-in-10 chance it will collide with our mother planet on September 29!
 
If you have heard this report, as have tens of millions of uninformed members of the general public, then you join the world's population in wanting more and the latest information about this huge celestial rock tumbling toward an Earth encounter on or about September 29 of 2004.....but rest assured, the dramatic "Armageddon Reports" are rumors and we can expect these to grow and be embellished even more as the date of closest approach of asteroid 4179 Toutatis nears.
 
The reports and rumors of impact and destruction will increase and become even more Sci-Fi as time approaches.....note that as of this writing, even the large network news organizations have not yet grabbed onto the sensationalism of this wonderful cosmic adventure.
 
Indeed, our precision and knowledge of 4179 Toutatis is refined better than any other large asteroid that is known to cross Earth's orbit. Toutatis' makes a 4-year trek around the Sun that takes it from just inside the Earth's path to far out to the main asteroid belt between Mars and Jupiter. Every four years, this asteroid makes a fairly close path to the Earth, but this fall, it will skim by our planet within a million miles,  about four times the distance to the Moon.

The rumors have grown because that distance is remarkably close by astronomical standards for an object that has the potential to cause global devastation.  But dangerous asteroids have passed MUCH closer to Earth than will Toutatis in September.....some actually well inside the moon's orbit (see http://earn.dlr.de/nea/04179.htm )  And throughout history, several asteroids and comets have impacted with Earth..... in fact, an object the size of Mars very likely hit Earth when it was very young, ultimately creating the Moon scientists believe, but the odds of any such major collision in any year are extremely small.

Indeed, this is the closest pass of Toutatis since the year 1353 and won't be that close again until 2562, according to the latest calculations.   No other asteroid so large is known to have come so close in the past, though accurate tracking of dangerous asteroids, or near earth objects (NEO's) has just recently become a state-of-the-art science reaching to objects so small that they were unnoticed and unreported until recent years; in fact, recent, high-tech astrometrical measurements such as those made nightly at the Arkansas Sky Observatory and some 300 other institutions worldwide still leaves wide margins of error for many objects.

For size comparisons, note that Toutatis is about 2.9 miles long and 1.5 miles wide (4.6 by 2.4 kilometers), about the size of a small rural town in Midwest America....but traveling considerably faster.

And throughout history, several asteroids and comets have hit the planet. In fact, an object the size of Mars hit Earth when it was very young, creating the Moon, scientists believe. But experts say the odds of a major collision in any year are extremely small. Any other near-Earth asteroid as big as Toutatis would almost surely be spotted decades or centuries before any possible impact.

Interesting Background Information and Data about 4179 Toutatis


(4179) mag 15.1
Period of orbit 3.92 years (1430.9 days)
Perihelion distance 0.91 AU
Aphelion distance 4.06 AU
Orbital elements:
Semimajor axis 2.4850970 AU
Eccentricity 0.6331715
Inclination of orbit 0.4662600 degrees
Argument of perihelion 275.3831200 degrees
Long. ascending node 128.1411800 degrees
Mean anomaly 337.9924000 degrees
Epoch of elements JD 2453217.5 (31 Jul 2004 0:00)
Right ascension: 22h07m18.381s
Declination: -11 45' 38.04"
Mean position at current epoch:
Right ascension: 22h07m33.066s
Declination: -11 44' 17.09"
Apparent position at current epoch:
Right ascension: 22h07m33.814s
Declination: -11 44' 16.82"
Dist from home planet: 0.46859191 AU (70,100,352 km)
Heliocentric position: lon 315.18908 lat -0.05721
Heliocentric radius 1.46191 AU
98.41% illuminated
Phase angle: 14.47 degrees
Elongation from Sun 158.91 degrees (morning sky)
Speed of apparent motion: 8.543"/hour at position angle 99.8
Motion is -0.06 degrees/day in RA, -0.01 degrees/day in dec
11 Sep 2004 3:17:39, 0.111174
27 Sep 2004 21:41:00, 0.011044
27 Sep 2004 23:45:29, 0.011027
28 Sep 2004 0:18:53, 0.011026
Time of closest approach: 28 Sep 2004 0:27
Distance at closest approach: 0.01103 AU(1,649,416 km)
Preliminary designation: 1989 AC
Discovery date: 1989 Jan 4
Discoverer's name: Pollas, C.
Discovered at: Caussols, France
Name cited in Minor Planet Circular 16444
Assumed asteroid diameter 6.3 km
Rotation period 130. hours
(Secure result, no ambiguity of period.)
Magnitude varies by 1.1
Absolute magnitude: 15.30
Slope parameter: 0.10
Orbital arc: 4702 days
21 H41 observations made to determine orbit - Orbit computed on 31 07 2004
Current ephemeris uncertainty (CEU) on 30 11 2001:
This asteroid's perihelion is inside the earth's aphelion distance of 1.016 AU; however, it doesn't cross our orbit

From the Arkansas Sky Observatories this plot of the light variations of asteroid 4179 Toutatis during a 44-day interval beginning on July 13, 2004.  Note that astrometric and photometric observations (H41 - P. Clay Sherrod) of this object have been posted daily (weather permitting) on the Astrometry Section of the ASO Website (http://www.arksky.org/astform.php ).  Each daily value used on this plot is the mean value of each day's short interval (typically less than 10 minutes total elapsed time) of computerized measurements (typically 4-5 measurements nightly).  This graph demonstrates the actual magnitude plotted corrected for the distance/brightening modulus as the object is approaching Earth, and is presented in smoothed spline fit for continuity.  
Graph and data reduction by B. Morgan Sherrod, H44.

 



Magnitudes are derived from the residuals of observed daily mean vs predicted values of the linear change in magnitude over the time period.  Curve is smoothed with cubic spline.

RESIDUAL OUTPUT
From Linear Change in Magnitude
Obs Observed Predicted Y Residuals
1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

14.82

14.94

14.78

14.42

14.63

14.46

14.26

14.83

14.10

13.93

13.66

14.00

13.57

13.88

13.50

13.06

13.28

13.28

12.68

12.51

12.27

12.17

12.73

12.95

12.61

12.41

11.79

12.12

12.50

11.89

11.92

11.21

11.66

11.17

11.92

11.64

14.89866

14.74422

14.66699

14.58977

14.51254

14.43532

14.3581

14.20365

14.0492

13.97197

13.89475

13.81753

13.7403

13.66308

13.58585

13.50863

13.12251

13.04529

12.96806

12.89084

12.81361

12.65916

12.58194

12.50472

12.42749

12.27304

12.19582

12.1186

11.96415

11.88692

11.8097

11.73248

11.65525

11.5008

11.42358

11.34636

-0.07866

0.195784

0.108009

-0.16977

0.12079

0.024681

-0.0981

0.629686

0.050801

-0.04697

-0.23475

0.182474

-0.17364

0.220255

-0.08585

-0.44863

0.160824

0.238048

-0.28806

-0.37804

-0.54736

-0.49345

0.148059

0.445283

0.185007

0.134733

-0.40439

0.003904

0.538709

0.003076

0.11155

-0.51819

-0.00025

-0.32937

0.497671

0.296145

Magnitude Statistics

Median 0.014292338
Mode #N/A
Standard Deviation 0.301876207
Sample Variance 0.091129244
Range 1.177049503
Minimum -0.547363052
Maximum 0.629686451
Count 36

 

 

Collection of Data As Toutatis Approaches

Arkansas Sky Observatory (ASO) is YOUR source for information and updates on the close and exciting approach of the asteroid 4179 Toutatis scheduled for late September, 2004.  Not only are precise astrometric measurements being taken nightly (see below) when possible, but updates on orbital parameters, scheduled date of closest Earth-pass, magnitude and observability are all updated regularly here on the ASO website.
 
Actual images of 4179 Toutatis are available on an updated basis at the NASA site:
http://neo.jpl.nasa.gov/images/toutatis.html
and an actual relief surface map of this huge space rock is provided by:
http://www.solarviews.com/eng/toutatis.htm
 
The key to understanding and actually "scientifically reporting" the approach of Toutatis and other NEO's is the accurate collection and use of data such as that made by Harvard Minor Planet Center (MPC) reporting stations such as ASO H41 (Petit Jean Mountain) and ASO H44 (Cascade Mountain) and ASO H43 (Conway), which nightly measure to accuracies of better than .01 arc seconds the placement and movement of such objects at any moment in time.  Indeed, ASO is well known for its nightly contributions, numbering greater than 5,000 for the first months of 2003
( http://newton.dm.unipi.it/cgi-bin/neodys/neoibo?sites:H41;obs;1;200 )
 
At this time, TOUTATIS presents an interesting and most unusual situation for such observations:  while most NEOs are moving rapidly - even in the short course of hours - against the more distant star field, this asteroid appears pretty much stationary, as if it is not moving at all.  However....rest assured it IS moving rapidly and increasing its speed with every night.  Only at this time, its approach is nearly directly in line with our line of sight, hence making it appear to brighten night after night (see the ASO light curve generated below).....yet, not moving much against the stars.

Observing Toutatis

Although 4179 Toutatis will actually reach a magnitude bright enough (~mag. 8.4 visually) to be detected in large and steady binoculars, there are some "pros and cons" regarding observing this remarkable event.

First, let us take the week PRIOR to closest swing by Earth, say September 20, 2004.  Only 8 days prior to maximum approach the asteroid will have barely brightened past its present magnitude! (about 14.6 CCD).  On that date, as seen in the accompanying chart, the asteroid will be VERY low in southern skies for North American observers, at near declination MINUS 20 degrees and moving southward in Capricornus rapidly each minute of time that passes.

However, only a week later, note in the second star chart from Guide8 that the asteroid on September 29 has NOW moved so far south as to be invisible for observers in North America, Europe and all but far southern hemisphere observers!  So the closest approach will most definitely be missed by northern observers, yet very favorably placed for folks Down Under.....in Pavo on the 28th, at declination MINUS 57 degrees.

So, up until the week of close approach, the minor planet moves southward.....very slowly at first and almost appearing to NOT be moving against the stars until the second week of September.  But even so, the object's brightness is such that a good 10 inch telescope will be necessary to see it visually.  By September 25, the 4179 will be totally blocked by the southern horizon for northern observers, yet begin to brighten so rapidly that hourly increases should be noted....and at the same time the object will begin a southwestward trek perpendicular to the line of sight of our southern observers, making it appear to be moving nearly one arc minute per minute of time!


Click here to see a finder chart with track of asteroid starting 29 Sep at 0h UT and ending at 12h UT 

 

 
Detailed nightly Astrometry (the precise measurements of position) and Photometry (the measurement of brightness) from ASO-H41 Petit Jean are given below.  NOTE that this data is updated nightly weather permitting and can always be accessed from the ASO website's ASTROMETRY PAGES found at:
http://www.arksky.org/astform.php .  We will continue to update this (and hundreds of other) objects each night as Toutatis continues its unparalleled approach toward Earth.
 
ASO H41 Astrometry (4179 Toutatis):
04179 C2004 07 13.30718 22 00 38.38 -12 07 59.6 16.5 R H41
04179 C2004 07 13.30887 22 00 38.40 -12 07 59.3 16.4 R H41
04179 C2004 07 13.31017 22 00 38.42 -12 07 58.8 16.5 R H41
04179 C2004 07 13.31144 22 00 38.47 -12 07 59.0 16.4 R H41
04179 C2004 07 14.30066 22 01 11.28 -12 05 33.9 15.9 R H41
04179 C2004 07 14.30193 22 01 11.30 -12 05 33.5 15.9 R H41
04179 C2004 07 14.31360 22 01 11.61 -12 05 32.0 15.9 R H41
04179 C2004 07 14.31490 22 01 11.67 -12 05 31.9 15.9 R H41
04179 C2004 07 15.35119 22 01 44.50 -12 03 07.8 16.3 R H41
04179 C2004 07 15.35395 22 01 44.57 -12 03 06.7 16.5 R H41
04179 C2004 07 15.35502 22 01 44.59 -12 03 06.9 16.3 R H41
04179 C2004 07 15.35606 22 01 44.64 -12 03 07.3 16.5 R H41
04179 C2004 07 27.29196 22 06 25.09 -11 46 26.7 15.8 R H41
04179 C2004 07 27.29384 22 06 25.09 -11 46 26.4 15.5 R H41
04179 C2004 07 27.29494 22 06 25.12 -11 46 26.5 15.5 R H41
04179 C2004 07 27.29633 22 06 25.11 -11 46 26.5 15.6 R H41
04179 C2004 07 27.37157 22 06 25.82 -11 46 24.4 15.7 R H41
04179 C2004 07 27.37295 22 06 25.84 -11 46 24.3 15.5 R H41
04179 C2004 07 28.30181 22 06 39.90 -11 46 02.4 15.0 R H41
04179 C2004 07 28.30375 22 06 39.94 -11 46 02.5 15.0 R H41
04179 C2004 07 28.30500 22 06 39.95 -11 46 02.4 15.0 R H41
04179 C2004 07 28.30624 22 06 39.94 -11 46 02.5 15.0 R H41
04179 C2004 08 01.27154 22 07 24.66 -11 46 08.6 14.8 R H41
04179 C2004 08 01.27428 22 07 24.67 -11 46 08.6 14.9 R H41
04179 C2004 08 01.27514 22 07 24.65 -11 46 09.0 14.9 R H41
04179 C2004 08 01.27745 22 07 24.71 -11 46 08.7 14.6 R H41
04179 C2004 08 01.27846 22 07 24.67 -11 46 08.2 14.9 R H41
04179 C2004 08 03.27519 22 07 38.32 -11 47 16.3 14.8 R H41
04179 C2004 08 03.27576 22 07 38.33 -11 47 17.3 15.0 R H41
04179 C2004 08 03.27677 22 07 38.34 -11 47 17.0 14.9 R H41
04179 C2004 08 03.32898 22 07 38.22 -11 47 19.6 15.0 R H41
04179 C2004 08 03.32962 22 07 38.26 -11 47 19.9 15.0 R H41
04179 C2004 08 04.27752 22 07 42.87 -11 48 08.5 14.8 R H41
04179 C2004 08 04.27883 22 07 42.85 -11 48 08.4 14.8 R H41
04179 C2004 08 04.27994 22 07 42.85 -11 48 08.0 14.7 R H41
04179 C2004 08 04.28068 22 07 42.87 -11 48 08.2 14.8 R H41
04179 C2004 08 05.26098 22 07 45.96 -11 49 10.0 14.6 R H41
04179 C2004 08 05.26179 22 07 45.96 -11 49 09.9 14.3 R H41
04179 C2004 08 05.26488 22 07 45.94 -11 49 10.3 14.4 R H41
04179 C2004 08 05.26594 22 07 45.91 -11 49 10.3 14.3 R H41
04179 C2004 08 05.26677 22 07 45.92 -11 49 10.4 14.5 R H41
04179 C2004 08 06.22391 22 07 47.63 -11 50 21.6 14.6 R H41
04179 C2004 08 06.22465 22 07 47.63 -11 50 21.9 14.8 R H41
04179 C2004 08 06.22549 22 07 47.62 -11 50 21.9 14.5 R H41
04179 C2004 08 07.30940 22 07 46.84 -11 51 57.2 14.5 R H41
04179 C2004 08 07.31097 22 07 46.83 -11 51 57.4 14.4 R H41
04179 C2004 08 07.31188 22 07 46.81 -11 51 57.1 14.4 R H41
04179 C2004 08 07.34707 22 07 46.51 -11 52 00.5 14.6 R H41
04179 C2004 08 07.34863 22 07 46.50 -11 52 00.9 14.4 R H41
04179 C2004 08 08.23346 22 07 45.79 -11 53 29.4 14.2 R H41
04179 C2004 08 08.23433 22 07 45.77 -11 53 29.8 14.3 R H41
04179 C2004 08 08.23723 22 07 45.75 -11 53 30.1 14.3 R H41
04179 C2004 08 08.28528 22 07 45.26 -11 53 35.5 14.2 R H41
04179 C2004 08 08.28670 22 07 45.24 -11 53 35.7 14.3 R H41
04179 C2004 08 10.25628 22 07 37.27 -11 57 31.8 14.9 R H41
04179 C2004 08 10.25738 22 07 37.25 -11 57 32.0 15.0 R H41
04179 C2004 08 10.25837 22 07 37.23 -11 57 32.1 14.8 R H41
04179 C2004 08 10.33396 22 07 36.16 -11 57 42.2 14.8 R H41
04179 C2004 08 10.33518 22 07 36.14 -11 57 42.6 14.7 R H41
04179 C2004 08 10.33612 22 07 36.14 -11 57 42.7 14.8 R H41
04179 C2004 08 12.26601 22 07 22.30 -12 02 27.1 14.0 R H41
04179 C2004 08 12.26718 22 07 22.27 -12 02 27.2 14.2 R H41
04179 C2004 08 12.26841 22 07 22.24 -12 02 27.5 14.1 R H41
04179 C2004 08 12.26949 22 07 22.23 -12 02 27.7 14.1 R H41
04179 C2004 08 13.35105 22 07 10.81 -12 05 30.3 13.8 R H41
04179 C2004 08 13.35244 22 07 10.77 -12 05 30.5 13.9 R H41
04179 C2004 08 13.35361 22 07 10.74 -12 05 30.7 14.0 R H41
04179 C2004 08 13.35503 22 07 10.71 -12 05 31.0 14.0 R H41
04179 C2004 08 14.33786 22 06 59.46 -12 08 31.4 13.7 R H41
04179 C2004 08 14.34047 22 06 59.40 -12 08 31.9 13.7 R H41
04179 C2004 08 14.34167 22 06 59.38 -12 08 32.0 13.6 R H41
04179 C2004 08 14.34260 22 06 59.37 -12 08 32.2 13.7 R H41
04179 C2004 08 14.34355 22 06 59.34 -12 08 32.5 13.6 R H41
04179 C2004 08 15.41225 22 06 44.68 -12 12 03.4 14.1 R H41
04179 C2004 08 15.41345 22 06 44.62 -12 12 03.8 14.0 R H41
04179 C2004 08 15.41430 22 06 44.62 -12 12 03.6 14.0 R H41
04179 C2004 08 15.41531 22 06 44.60 -12 12 03.8 14.0 R H41
04179 C2004 08 15.41623 22 06 44.59 -12 12 04.2 13.9 R H41
04179 C2004 08 16.24997 22 06 33.81 -12 15 05.2 13.9 R H41
04179 C2004 08 16.24997 22 06 33.81 -12 15 05.2 13.5 R H41
04179 C2004 08 16.28032 22 06 32.96 -12 15 09.8 13.4 R H41
04179 C2004 08 16.28190 22 06 32.93 -12 15 10.1 13.5 R H41
04179 C2004 08 16.28288 22 06 32.90 -12 15 10.4 13.6 R H41
04179 C2004 08 16.28494 22 06 32.85 -12 15 10.7 13.5 R H41
04179 C2004 08 17.24925 22 06 17.59 -12 18 49.6 13.9 R H41
04179 C2004 08 17.25001 22 06 17.56 -12 18 49.7 13.8 R H41
04179 C2004 08 17.25395 22 06 17.45 -12 18 50.7 13.9 R H41
04179 C2004 08 17.28142 22 06 16.71 -12 18 57.2 13.9 R H41
04179 C2004 08 17.28282 22 06 16.67 -12 18 57.6 13.9 R H41
04179 C2004 08 17.28367 22 06 16.65 -12 18 57.6 13.9 R H41
04179 C2004 08 18.35027 22 05 56.97 -12 23 16.2 13.5 R H41
04179 C2004 08 18.35138 22 05 56.95 -12 23 16.5 13.5 R H41
04179 C2004 08 18.35266 22 05 56.91 -12 23 16.8 13.5 R H41
04179 C2004 08 18.35420 22 05 56.87 -12 23 17.2 13.5 R H41
04179 C2004 08 18.35533 22 05 56.83 -12 23 17.4 13.5 R H41
04179 C2004 08 19.28560 22 05 39.52 -12 27 18.8 13.0 R H41
04179 C2004 08 19.28655 22 05 39.50 -12 27 19.0 13.1 R H41
04179 C2004 08 19.28987 22 05 39.39 -12 27 19.9 13.0 R H41
04179 C2004 08 19.29123 22 05 39.35 -12 27 20.2 13.1 R H41
04179 C2004 08 19.29211 22 05 39.32 -12 27 20.4 13.1 R H41


Station data:
(H41) Petit Jean Mountain (N35.1396 W92.9258).   Observer P. C. Sherrod. 0.41-m f/3.7 Schmidt-Cassegrain + CCD.

Orbital Parameters from ASO Data
21 H41 observations made to determine orbit - Orbit computed on 31 07 2004
Orbital elements:

(4179)
Perihelion 2004 Oct 26.692639 TT
Epoch 2004 Aug 20.0 TT = JDT 2453237.5
M 343.23706 (2000.0) P Q
n 0.24763307 Peri. 274.80273 0.73131904 -0.68200508 
a 2.5114832 Node 128.19796 0.62896009 0.67072481 
e 0.6335748 Incl. 0.46973 0.26378334 0.29154293 
P 3.98 H 15.2 G 0.15 q 0.9202705
From 98 observations 2004 Jul. 13-Aug. 19; RMS error 0.275 arcseconds



Residuals in arcseconds:
040713 H41 .32+ .24- 040804 H41 .32- .30- 040813 H41 .15- .10- 
040713 H41 .11- .19- 040804 H41 .27- .17+ 040813 H41 .20- .16- 
040713 H41 .38- .12+ 040804 H41 .06+ .01+ 040814 H41 .13- .03- 
040713 H41 .20- .26- 040805 H41 .20+ .11- 040814 H41 .21- .06- 
040714 H41 .25+ .26- 040805 H41 .26+ .05+ 040814 H41 .13- .06+ 
040714 H41 .02+ .03- 040805 H41 .18+ .12- 040814 H41 .01+ .02+ 
040714 H41 .27- .14- 040805 H41 .19- .04- 040814 H41 .14- .10- 
040714 H41 .08+ .22- 040805 H41 .02+ .07- 040815 H41 .21+ .03+ 
040715 H41 .07+ .12+ 040806 H41 .10+ .05+ 040815 H41 .31- .15- 
040715 H41 .02+ .85+ 040806 H41 .16+ .18- 040815 H41 .05- .20+ 
040715 H41 .10- .51+ 040806 H41 .09+ .11- 040815 H41 .04- .19+ 
040715 H41 .22+ .03- 040807 H41 .02+ .02- 040815 H41 .08+ .04- 
040727 H41 .30+ .07- 040807 H41 .08+ .07- 040816 H41( 1.3+ 2.1-) 
040727 H41 .03+ .18+ 040807 H41 .10- .31+ 040816 H41 .01- .04+ 
040727 H41 .32+ .06+ 040807 H41 .06- .10+ 040816 H41 .14+ .09+ 
040727 H41 .03- .02+ 040807 H41 .02- .16- 040816 H41 .06+ .00 
040727 H41 .14- .05- 040808 H41 .07+ .23+ 040816 H41 .09+ .15+ 
040727 H41 .04- .01+ 040808 H41 .10- .07- 040817 H41 .26+ .04- 
040728 H41 .23- .09+ 040808 H41 .02+ .03- 040817 H41 .12+ .04+ 
040728 H41 .13+ .04- 040808 H41 .02- .03- 040817 H41 .06+ .02- 
040728 H41 .13+ .04+ 040808 H41 .10- .08- 040817 H41 .08+ .04- 
040728 H41 .16- .08- 040810 H41 .22+ .18+ 040817 H41 .05+ .12- 
040801 H41 .00 .06+  040810 H41 .15+ .13+ 040817 H41 .09+ .08+ 
040801 H41 .07+ .14+ 040810 H41 .06+ .17+ 040818 H41 .10- .00 
040801 H41 .25- .24- 040810 H41 .06- .15+ 040818 H41 .06+ .04- 
040801 H41 .57+ .13+ 040810 H41 .11- .10- 040818 H41 .01- .04- 
040801 H41 .05- .65+ 040810 H41 .08+ .08- 040818 H41 .03+ .08- 
040803 H41 .23- .38+ 040812 H41 .04+ .40+ 040818 H41 .10- .01- 
040803 H41 .07- .59- 040812 H41 .09- .50+ 040819 H41 .03- .15- 
040803 H41 .10+ .24- 040812 H41 .21- .40+ 040819 H41 .10+ .10- 
040803 H41 .42- .39- 040812 H41 .08- .38+ 040819 H41 .02- .13- 
040803 H41 .19+ .66- 040813 H41 .16+ .12- 040819 H41 .00 .07- 
040804 H41 .09- .48- 040813 H41 .04- .09- 

Daily Ephemerides

Ephemerides 0h UT:

Da Mon Year      RA           Dec      delta    r   elong mag
-- --- ---- ------------ ------------ ------ ------ ----- ---
20 Aug 2004 22 05 26.767 -12 30 26.69 0.2842 1.2959 178.0 13.3
21 Aug 2004 22 05 05.042 -12 35 12.07 0.2758 1.2873 178.8 13.2
22 Aug 2004 22 04 41.889 -12 40 13.91 0.2674 1.2788 178.9 13.1
23 Aug 2004 22 04 17.336 -12 45 32.62 0.2592 1.2702 178.1 13.0
24 Aug 2004 22 03 51.413 -12 51 08.67 0.2510 1.2617 177.2 12.9
25 Aug 2004 22 03 24.143 -12 57 02.65 0.2430 1.2533 176.1 12.9
26 Aug 2004 22 02 55.542 -13 03 15.25 0.2351 1.2449 175.0 12.9
27 Aug 2004 22 02 25.622 -13 09 47.31 0.2273 1.2365 173.9 12.8
28 Aug 2004 22 01 54.383 -13 16 39.84 0.2195 1.2282 172.8 12.8
29 Aug 2004 22 01 21.816 -13 23 54.03 0.2119 1.2199 171.7 12.7
30 Aug 2004 22 00 47.903 -13 31 31.29 0.2043 1.2116 170.5 12.7
31 Aug 2004 22 00 12.618 -13 39 33.27 0.1969 1.2034 169.4 12.6
 1 Sep 2004 21 59 35.927 -13 48 01.86 0.1895 1.1953 168.2 12.6
 2 Sep 2004 21 58 57.786 -13 56 59.25 0.1822 1.1872 167.1 12.5
 3 Sep 2004 21 58 18.142 -14 06 28.00 0.1750 1.1791 165.9 12.4
 4 Sep 2004 21 57 36.933 -14 16 31.04 0.1679 1.1712 164.7 12.4
 5 Sep 2004 21 56 54.079 -14 27 11.83 0.1608 1.1632 163.5 12.3
 6 Sep 2004 21 56 09.483 -14 38 34.42 0.1538 1.1554 162.3 12.2
 7 Sep 2004 21 55 23.021 -14 50 43.63 0.1469 1.1476 161.1 12.2
 8 Sep 2004 21 54 34.538 -15 03 45.18 0.1400 1.1399 159.9 12.1
 9 Sep 2004 21 53 43.834 -15 17 45.98 0.1332 1.1322 158.6 12.0
10 Sep 2004 21 52 50.659 -15 32 54.36 0.1264 1.1247 157.3 11.9
11 Sep 2004 21 51 54.689 -15 49 20.51 0.1198 1.1172 156.1 11.8
12 Sep 2004 21 50 55.511 -16 07 16.99 0.1131 1.1098 154.8 11.7
13 Sep 2004 21 49 52.593 -16 26 59.41 0.1065 1.1024 153.4 11.6
14 Sep 2004 21 48 45.240 -16 48 47.42 0.1000 1.0952 152.0 11.5
15 Sep 2004 21 47 32.538 -17 13 06.04 0.0935 1.0881 150.6 11.4
16 Sep 2004 21 46 13.265 -17 40 27.65 0.0870 1.0810 149.2 11.3
17 Sep 2004 21 44 45.768 -18 11 34.80 0.0806 1.0741 147.7 11.1
18 Sep 2004 21 43 07.762 -18 47 24.46 0.0742 1.0672 146.1 11.0
19 Sep 2004 21 41 16.024 -19 29 14.52 0.0679 1.0605 144.4 10.8
20 Sep 2004 21 39 05.887 -20 18 54.14 0.0616 1.0539 142.6 10.7
21 Sep 2004 21 36 30.377 -21 19 00.69 0.0553 1.0473 140.7 10.5
22 Sep 2004 21 33 18.653 -22 33 28.81 0.0491 1.0409 138.5 10.3
23 Sep 2004 21 29 12.996 -24 08 22.60 0.0429 1.0347 136.0 10.0
24 Sep 2004 21 23 42.484 -26 13 34.55 0.0368 1.0285 133.0  9.8
25 Sep 2004 21 15 48.208 -29 06 04.15 0.0308 1.0225 129.1  9.5
26 Sep 2004 21 03 23.358 -33 16 55.26 0.0249 1.0166 123.8  9.2
27 Sep 2004 20 41 01.386 -39 45 21.95 0.0193 1.0108 116.0  8.8
28 Sep 2004 19 50 17.251 -50 09 43.34 0.0144 1.0052 102.8  8.6
29 Sep 2004 17 11 37.268 -62 17 28.54 0.0110 0.9997  79.7  9.0
30 Sep 2004 13 03 19.898 -51 34 51.29 0.0107 0.9944  49.4 11.0
 1 Oct 2004 11 33 34.302 -30 50 41.51 0.0138 0.9893  30.6 14.1
 2 Oct 2004 11 00 33.023 -17 55 59.35 0.0186 0.9843  26.9 15.4
 3 Oct 2004 10 44 12.366 -10 27 45.19 0.0241 0.9794  28.7 15.6
 4 Oct 2004 10 34 36.716 -05 49 00.02 0.0300 0.9748  31.4 15.5
 5 Oct 2004 10 28 22.847 -02 42 18.71 0.0361 0.9703  34.0 15.4
 6 Oct 2004 10 24 03.993 -00 29 44.88 0.0422 0.9659  36.2 15.4
 7 Oct 2004 10 20 57.144 +01 08 40.85 0.0484 0.9618  38.2 15.4
 8 Oct 2004 10 18 38.614 +02 24 18.76 0.0547 0.9578  40.0 15.3
 9 Oct 2004 10 16 54.298 +03 23 59.88 0.0610 0.9540  41.6 15.3
10 Oct 2004 10 15 35.273 +04 12 05.92 0.0674 0.9504  43.1 15.3
11 Oct 2004 10 14 35.616 +04 51 30.97 0.0737 0.9470  44.4 15.3
12 Oct 2004 10 13 51.233 +05 24 15.09 0.0801 0.9438  45.7 15.3
13 Oct 2004 10 13 19.204 +05 51 43.74 0.0865 0.9408  47.0 15.3
14 Oct 2004 10 12 57.383 +06 14 59.30 0.0929 0.9380  48.2 15.3
15 Oct 2004 10 12 44.159 +06 34 48.39 0.0993 0.9354  49.3 15.3
16 Oct 2004 10 12 38.296 +06 51 46.53 0.1057 0.9330  50.4 15.3
17 Oct 2004 10 12 38.832 +07 06 21.22 0.1121 0.9308  51.5 15.3
18 Oct 2004 10 12 45.004 +07 18 54.07 0.1186 0.9288  52.5 15.3
19 Oct 2004 10 12 56.201 +07 29 42.31 0.1250 0.9271  53.5 15.3
20 Oct 2004 10 13 11.921 +07 38 59.82 0.1314 0.9255  54.5 15.3
21 Oct 2004 10 13 31.748 +07 46 57.93 0.1378 0.9242  55.4 15.3
22 Oct 2004 10 13 55.326 +07 53 46.01 0.1443 0.9231  56.4 15.3
23 Oct 2004 10 14 22.347 +07 59 31.86 0.1507 0.9222  57.3 15.3

 

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Copyright Arkansas Sky Observatory 2002,2003,2004  [A.S.O.] All rights reserved. Revised: