"Pseudo-MPEC" for C/2009 A2
Created Sat May 25 15:22:17 2013 using Find_Orb
Astrometry:
CK09A020 4S2008 12 31.32212 22 06 15.0 -17 23 08 65594C49
CK09A020 4s2008 12 31.32212 2 -0.59800520 -0.34739946 -0.15278735 65594C49
CK09A020 4S2008 12 31.34990 22 05 59.8 -17 18 09 65594C49
CK09A020 4s2008 12 31.34990 2 -0.59782107 -0.34767546 -0.15290664 65594C49
CK09A020 4S2008 12 31.37767 22 05 46.3 -17 14 57 65594C49
CK09A020 4s2008 12 31.37767 2 -0.59763679 -0.34795138 -0.15302588 65594C49
CK09A020 4S2008 12 31.40545 22 05 27.7 -17 09 37 65594C49
CK09A020 4s2008 12 31.40545 2 -0.59745236 -0.34822723 -0.15314509 65594C49
CK09A020 4S2008 12 31.43323 22 05 09.1 -17 06 13 65594C49
CK09A020 4s2008 12 31.43323 2 -0.59726777 -0.34850299 -0.15326427 65594C49
CK09A020 4S2008 12 31.48878 22 04 30.8 -16 58 37 65594C49
CK09A020 4s2008 12 31.48878 2 -0.59689815 -0.34905429 -0.15350253 65594C49
CK09A020 4S2008 12 31.57212 22 03 31.0 -16 46 13 65594C49
CK09A020 4s2008 12 31.57212 2 -0.59634257 -0.34988065 -0.15385965 65594C49
CK09A020 4S2008 12 31.59990 22 03 10.0 -16 43 16 65594C49
CK09A020 4s2008 12 31.59990 2 -0.59615707 -0.35015595 -0.15397862 65594C49
CK09A020 4S2008 12 31.62767 22 02 49.1 -16 39 19 65594C49
CK09A020 4s2008 12 31.62767 2 -0.59597143 -0.35043117 -0.15409756 65594C49
CK09A020 4S2008 12 31.65545 22 02 35.7 -16 35 58 65595C49
CK09A020 4s2008 12 31.65545 2 -0.59578562 -0.35070632 -0.15421647 65595C49
CK09A020 4S2008 12 31.68323 22 02 13.3 -16 30 52 65595C49
CK09A020 4s2008 12 31.68323 2 -0.59559968 -0.35098137 -0.15433534 65595C49
CK09A020 3S2009 01 01.05421 18 55 46.9 -25 54 42 65595249
CK09A020 3s2009 01 01.05421 2 +0.00599146 -0.00780486 -0.00369547 65595249
CK09A020 3S2009 01 01.07087 18 55 42.3 -25 49 51 65595249
CK09A020 3s2009 01 01.07087 2 +0.00599366 -0.00780391 -0.00369551 65595249
CK09A020 3S2009 01 01.09588 18 55 36.6 -25 43 46 65595249
CK09A020 3s2009 01 01.09588 2 +0.00599696 -0.00780249 -0.00369558 65595249
CK09A020 3S2009 01 01.11256 18 55 29.5 -25 40 00 65595249
CK09A020 3s2009 01 01.11256 2 +0.00599916 -0.00780154 -0.00369563 65595249
CK09A020 3S2009 01 01.15421 18 55 22.2 -25 29 19 65595249
CK09A020 3s2009 01 01.15421 2 +0.00600464 -0.00779916 -0.00369574 65595249
CK09A020 3S2009 01 01.17921 18 55 10.4 -25 22 43 65595249
CK09A020 3s2009 01 01.17921 2 +0.00600792 -0.00779773 -0.00369581 65595249
CK09A020 3S2009 01 01.19587 18 55 04.4 -25 17 59 65595249
CK09A020 3s2009 01 01.19587 2 +0.00601011 -0.00779678 -0.00369585 65595249
CK09A020 3S2009 01 01.22087 18 54 55.7 -25 12 31 65595249
CK09A020 3s2009 01 01.22087 2 +0.00601339 -0.00779535 -0.00369592 65595249
CK09A020 3S2009 01 01.23755 18 54 56.3 -25 07 49 65595249
CK09A020 3s2009 01 01.23755 2 +0.00601558 -0.00779440 -0.00369596 65595249
CK09A020 3S2009 01 01.26254 18 54 39.9 -25 00 14 65595249
CK09A020 3s2009 01 01.26254 2 +0.00601885 -0.00779297 -0.00369603 65595249
CK09A020 3S2009 01 01.27921 18 54 35.8 -24 55 37 65595249
CK09A020 3s2009 01 01.27921 2 +0.00602103 -0.00779201 -0.00369607 65595249
Station data:
(249) SOHO.
(C49) STEREO-A.
Orbital elements: C/2009 A2
Perihelion 2009 Jan 1.627761 +/- 0.00275 TT = 15:03:58 (JD 2454833.127761)
Epoch 2009 Jan 1.0 TT = JDT 2454832.5 Earth MOID: 0.5202 Find_Orb
M 359.9682 +/- 0.054
n 0.0505607 +/- 0.12 Peri. 56.4363 +/- 2.2
a 7.2431382 +/- 14.9 Node 328.2430 +/- 1.4
e 0.998993 +/- 0.00169 Incl. 132.9447 +/- 0.08
P 19.49 U 11.3
q 0.0072894 +/- 0.00053 Q 14.478987 +/- 52.7
From 22 observations 2008 Dec. 31-2009 Jan. 1 (23.0 hr); mean residual 34".312.
Residuals in arcseconds:
081231 C49 49.0- 90.5- 081231 C49 62.1- 6.62+ 090101 249 19.0- 6.23+
081231 C49 13.3- 14.4- 081231 C49 31.9+ 32.5- 090101 249 26.8- 25.6+
081231 C49 49.1+ 46.6- 081231 C49 .155+ 31.3+ 090101 249 28.0- 49.5-
081231 C49 41.1+ 47.8+ 090101 249 9.96+ 13.9- 090101 249 62.6+ 40.8-
081231 C49 35.6+ 24.8+ 090101 249 2.03+ 31.8+ 090101 249 29.2- 2.23-
081231 C49 17.0+ 22.6+ 090101 249 10.4+ 24.4+ 090101 249 7.95+ 8.06-
081231 C49 22.5- 67.3+ 090101 249 25.7- .840-
081231 C49 44.6- 7.82+ 090101 249 36.1+ 1.69+