"Pseudo-MPEC" for MESSENGER

Created Fri Aug 27 14:39:18 2004 using Find_Orb


 Astrometry 
 Observing stations 
 Orbital elements 
 Residuals 
 Ephemeris 

Astrometry:
MESSENGER     C2004 08  3.37020 18 23 01.90 +37 19 08.4          12.2 R      E12
MESSENGER     C2004 08  3.37052 18 23 12.75 +37 18 38.9          12.1 R      E12
MESSENGER     C2004 08  3.37083 18 23 23.06 +37 18 10.3          12.3 R      E12
MESSENGER     C2004 08  3.37113 18 23 33.18 +37 17 42.6          12.4 R      E12
MESSENGER     C2004 08  3.45469 18 47 03.65 +35 59 07.0          13.8 R      E12
MESSENGER     C2004 08  3.45499 18 47 06.22 +35 58 55.1          13.8 R      E12
MESSENGER     C2004 08  3.45530 18 47 08.69 +35 58 43.0          13.9 R      E12
MESSENGER     C2004 08  3.45561 18 47 11.26 +35 58 30.3          13.6 R      E12
MESSENGER     C2004 08  3.45958 18 47 43.28 +35 55 51.3          13.7 R      E12
MESSENGER     C2004 08  3.45989 18 47 45.70 +35 55 39.3          13.3 R      E12
MESSENGER     C2004 08  3.46020 18 47 48.20 +35 55 26.3          13.2 R      E12
MESSENGER     C2004 08  3.46053 18 47 50.68 +35 55 14.2          13.5 R      E12
MESSENGER     C2004 08  3.60499 18 58 35.76 +34 31 54.8          15.4 R      E12
MESSENGER     C2004 08  3.60530 18 58 36.69 +34 31 45.3          15.0 R      E12
MESSENGER     C2004 08  3.60560 18 58 37.56 +34 31 36.3          15.4 R      E12
MESSENGER     C2004 08  3.60591 18 58 38.53 +34 31 26.0          15.3 R      E12
MESSENGER     C2004 08  4.14889 19 24 59.17 +32 39 33.3          17.5 R      735
MESSENGER     C2004 08  4.15191 19 24 56.80 +32 39 44.7          17.1 R      735
MESSENGER     C2004 08  4.15418 19 24 55.06 +32 39 53.1          17.3 R      735
MESSENGER     C2004 08  4.15569 19 24 53.92 +32 39 58.2          17.1 R      735
MESSENGER     C2004 08  4.16022 19 24 50.41 +32 40 13.9          17.7 R      735

Station data:
(735) George Observatory, Needville (N29.3749 W95.5936).   Observers J.
    Dellinger, W. G. Dillon.  Measurer J. Dellinger.  0.46m f/4.5 Newtonian +
    CCD.
(E12) Siding Spring Survey (S31.2735 E149.0642).   Observers R. H. McNaught,
    S. Larson, et.al.  Measurer R. H. McNaught.  0.5-m Uppsala Schmidt + CCD.

Orbital elements (Geocentric):
MESSENGER
   Perigee 2004 Aug 3.297522 TT
Epoch 2004 Aug  4.0 TT = JDT 2453221.5                  Find_Orb
q    6314.07  km         (2000.0)            P               Q
H   28.0           Peri.  311.75533     -0.83569969      0.51971820
                   Node   199.22330      0.50312749      0.85408030
e   1.2594867      Incl.   32.61836     -0.22015619     -0.02097173
From 21 observations 2004 Aug. 3-4;   RMS error 0.764 arcseconds

Orbital elements (Heliocentric):
MESSENGER
   Perihelion 2004 Apr 27.577575 TT
Epoch 2004 Aug 23.0 TT = JDT 2453240.5                  Find_Orb
M 115.50708              (2000.0)            P               Q
n   0.98368850     Peri.  255.65429     -0.88982167      0.44857884
a   1.0013002      Node   310.92451     -0.36427363     -0.80869811
e   0.0757512      Incl.    6.35495     -0.27481285     -0.38050541
P   1.00 /365.96d  H   28.0           G   0.15      q 0.9254505
From 21 observations 2004 Aug. 3-4;   RMS error 0.764 arcseconds


Residuals in arcseconds:
040803 E12  1.7+  .21-    040803 E12  .37-  .02+    040803 E12  .33-  .39+
040803 E12  .89+  .19+    040803 E12  .20-  .36-    040803 E12  .08-  .14-
040803 E12  1.4-  .38+    040803 E12  .38-  .07-    040804 735  .86+  .37+
040803 E12  1.1-  .37+    040803 E12  .51+  .80-    040804 735  .16-  .04+
040803 E12  .01+  .38-    040803 E12  .62-  .16+    040804 735  .26-  .08+
040803 E12  .84+  .17-    040803 E12  .53+  .35-    040804 735  .05-  .17-
040803 E12  .43-  .23+    040803 E12  .28+  .07-    040804 735  .28-  .50+

Ephemerides:
Da Mon Year   RA              Dec         delta   r     elong mag
-- --- ----  ------------   ------------  ------ ------ ----- ---
 4 Aug 2004  19 20 54.607   +32 36 43.47  296756 1.0157 125.1 16.6
 5 Aug 2004  19 30 03.415   +32 38 35.08  663751 1.0170 125.8 18.3
 6 Aug 2004  19 32 42.262   +32 37 55.29  .00684 1.0183 126.0 19.2
 7 Aug 2004  19 33 58.347   +32 36 34.12  .00922 1.0195 126.0 19.9
 8 Aug 2004  19 34 43.641   +32 34 39.47  0.0116 1.0208 126.0 20.4
 9 Aug 2004  19 35 14.644   +32 32 13.42  0.0139 1.0220 125.9 20.8
10 Aug 2004  19 35 38.317   +32 29 17.35  0.0163 1.0233 125.8 21.1
11 Aug 2004  19 35 58.143   +32 25 52.57  0.0187 1.0245 125.7 21.4
12 Aug 2004  19 36 16.082   +32 22 00.48  0.0210 1.0257 125.7 21.7
13 Aug 2004  19 36 33.336   +32 17 42.47  0.0234 1.0269 125.6 21.9
14 Aug 2004  19 36 50.693   +32 13 00.05  0.0257 1.0281 125.5 22.1
15 Aug 2004  19 37 08.697   +32 07 54.75  0.0281 1.0293 125.4 22.3
16 Aug 2004  19 37 27.734   +32 02 28.21  0.0304 1.0305 125.3 22.5
17 Aug 2004  19 37 48.085   +31 56 42.08  0.0328 1.0316 125.2 22.6
18 Aug 2004  19 38 09.952   +31 50 38.08  0.0351 1.0328 125.0 22.8
19 Aug 2004  19 38 33.475   +31 44 17.92  0.0375 1.0339 124.9 22.9
20 Aug 2004  19 38 58.747   +31 37 43.27  0.0398 1.0351 124.8 23.1
21 Aug 2004  19 39 25.817   +31 30 55.74  0.0422 1.0362 124.7 23.2
22 Aug 2004  19 39 54.700   +31 23 56.78  0.0445 1.0373 124.5 23.3
23 Aug 2004  19 40 25.378   +31 16 47.70  0.0469 1.0384 124.4 23.4
24 Aug 2004  19 40 57.810   +31 09 29.59  0.0493 1.0395 124.3 23.5
25 Aug 2004  19 41 31.936   +31 02 03.25  0.0516 1.0406 124.1 23.6
26 Aug 2004  19 42 07.682   +30 54 29.24  0.0540 1.0416 124.0 23.7
27 Aug 2004  19 42 44.970   +30 46 47.77  0.0563 1.0427 123.8 23.8