With a reliable set of elements for this TNO (4 oppositions from 2002-2007), precovery images from 1990, 1991, and 1992 were found close to their predictions. Curiously, 2002 XV93 was at least 0.5 magnitude brighter than expected.
The following astrometry was submitted to the Minor Planet Center:
K02X93V 1990 10 16.40035 03 24 54.20 +26 58 25.1 261
K02X93V 1991 10 12.40937 03 30 32.81 +27 31 46.4 261
K02X93V 1992 09 28.46389 03 36 46.10 +28 04 07.1 261
At the end of this page are the elements and residuals before and with the new data. The new orbit is much more accurate because the object
has now been observed for 17 years instead of five years. It was numbered on 2022-03-28.
View the Discovery Announcement. See also MPEC 2003-Y51.
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1992 Sep. 28.46389 UTC RA 03h36m46.10s Dec. +28°04'07.1" 90-minute exposure Size = 150" x 150" Palomar Mountain-DSS plate XP418-A0C1 |
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1991 Oct. 12.40397 UTC RA 03h30m32.81s Dec. +27°31'46.4" 55-minute exposure Size = 150" x 150" Palomar Mountain-DSS plate XJ481-A1ES |
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1990 Oct 16.40035 UTC RA 03h24m54.20s Dec. +26°58'25.1" 85-minute exposure Size = 150" x 150" Palomar Mountain-DSS plate XP481-A1J3 |
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2002 XV93
Epoch 2007 Oct. 27.0 TT = JDT 2454400.5 MPC M 267.42377 (2000.0) P Q n 0.00401785 Peri. 166.00436 -0.99393298 +0.08033318 T = 2477441.76450 JDT a 39.1868706 Node 19.09126 -0.10919176 -0.80271076 q = 34.2707742 e 0.1254526 Incl. 13.27877 +0.01320557 -0.59093318 P 245 H 4.9 G 0.15 U 3 From 26 observations at 4 oppositions, 2002-2007, mean residual 0".32. Residuals 20021210 644 0.0 0.0 20031122 695 0.0 0.0 20031218 621 1.1- 0.2+ 20021210 644 0.1- 0.1+ 20031123 695 0.1- 0.1- 20031218 621 0.6- 0.1- 20021210 644 0.4+ 0.4+ 20031123 695 0.0 0.1+ 20041119 176 0.3- 0.1- 20030104 675 0.0 0.0 20031123 695 0.1- 0.0 20041120 176 0.7+ 0.4+ 20030104 675 0.1+ 0.1- 20031204 568 0.3- 0.0 20041212 290 0.1- 0.0 20030105 675 0.3- 0.3- 20031204 568 0.2- 0.0 20041212 290 0.1+ 0.1- 20030221 621 0.3- 0.1- 20031217 621 0.7+ 0.3- 20071111 688 0.1- 0.0 20030222 621 0.3+ 0.2+ 20031217 621 1.0+ 0.4- 20071111 688 0.0 0.1+ 20030223 621 0.1- 0.5+ 20031217 621 0.2+ 0.3-
2002 XV93
Epoch 2007 Oct. 27.0 TT = JDT 2454400.5 MPC M 267.38677 (2000.0) P Q n 0.00401838 Peri. 166.03584 -0.99388520 +0.08091338 T = 2477447.90921 JDT a 39.1833983 Node 19.09330 -0.10966601 -0.80264473 q = 34.2683513 e 0.1254370 Incl. 13.27910 +0.01286795 -0.59094370 P 245 H 4.9 G 0.15 U 3 From 29 observations at 7 oppositions, 1990-2007, mean residual 0".32. Residuals 19901016 675 0.1+ 0.2- 20030222 621 0.3+ 0.3+ 20031217 621 0.2+ 0.3- 19911012 675 0.5- 0.0 20030223 621 0.0 0.6+ 20031218 621 1.1- 0.2+ 19920928 675 0.5+ 0.0 20031122 695 0.1- 0.0 20031218 621 0.6- 0.1- 20021210 644 0.0 0.1+ 20031123 695 0.1- 0.1- 20041119 176 0.3- 0.1- 20021210 644 0.1- 0.1+ 20031123 695 0.1- 0.1+ 20041120 176 0.6+ 0.3+ 20021210 644 0.3+ 0.4+ 20031123 695 0.1- 0.0 20041212 290 0.0 0.0 20030104 675 0.0 0.0 20031204 568 0.3- 0.0 20041212 290 0.1+ 0.1- 20030104 675 0.1+ 0.0 20031204 568 0.3- 0.1+ 20071111 688 0.0 0.1- 20030105 675 0.3- 0.3- 20031217 621 0.7+ 0.3- 20071111 688 0.1+ 0.1- 20030221 621 0.2- 0.0 20031217 621 1.0+ 0.4-
DSS precovery images are from DSS plate archive scans, which are © copyright California Institute of Technology.