RA 20h22m10.41s Dec. +14°11'59.7"
55-minute exposure
Size = 150" x 150"
Palomar Mountain-DSS plate XJ668-A1G1
RA 19h47m41.45s Dec. +14°36'31.9"
65-minute exposure
Size = 150" x 150"
Palomar Mountain-DSS plate XJ666-A1FZ
2007 RW10 is one of the smallest TNOs to be successfully precovered. The original orbit (four oppositions from 2001 to 2008) was quite accurate, and 2007 RW10 was considerably brighter during the 1980s and 1990s when it passed perihelion.
The target was traversing the summer Milky Way during this time, and as seen in the precovery images below, there were many stars in the area. Fortunately, two images in 1988 and 1990 were found only 7" from their predicted positions.
The following astrometry was submitted to the Minor Planet Center:
K07R10W 1988 06 17.37694 19 47 41.45 +14 36 31.9 261
K07R10W 1990 06 23.41910 20 22 10.41 +14 11 59.7 261
At the end of this page are the elements and residuals before and with the new data.
The new orbit is more accurate because the object has now been observed for over 20 years instead of seven years. 2007 RW10 was numbered on 2011-12-10.
View the Discovery Announcement. See also MPEC 2008-X68.
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1990 June 23.41910 UTC RA 20h22m10.41s Dec. +14°11'59.7" 55-minute exposure Size = 150" x 150" Palomar Mountain-DSS plate XJ668-A1G1 |
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1988 June 17.37694 UTC RA 19h47m41.45s Dec. +14°36'31.9" 65-minute exposure Size = 150" x 150" Palomar Mountain-DSS plate XJ666-A1FZ |
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2007 RW10
Epoch 2009 June 18.0 TT = JDT 2455000.5 MPC M 51.52323 (2000.0) P Q n 0.00588284 Peri. 96.70110 +0.21402552 +0.97417011 T = 2446242.27987 JDT a 30.3909705 Node 187.02655 -0.95053222 +0.22468726 q = 21.1789757 e 0.3031162 Incl. 36.06271 +0.22512571 +0.02254393 P 168 H 6.2 G 0.15 U 2 From 38 observations at 4 oppositions, 2001-2008, mean residual 0".33. Residuals 20011005 644 0.6- 0.3- 20070916 675 0.6- 0.2- 20071129 675 0.3- 0.1- 20011005 644 0.1+ 0.1- 20071004 688 0.8- 0.2- Y 20071129 675 0.2- 0.2+ 20011013 644 0.2+ 0.2+ 20071004 688 0.8+ 0.2+ Y 20071129 675 0.2- 0.2+ 20011013 644 0.2- 0.2+ 20071004 688 0.2+ 0.5- Y 20080729 675 0.5+ 0.3- 20011013 644 0.1+ 0.0 20071014 246 0.8+ 0.5+ 20080729 675 0.1- 0.2- 20020904 644 0.0 0.0 20071014 246 0.7+ 0.3+ 20080729 675 0.3+ 0.2- 20020912 644 0.4+ 0.3- 20071014 246 0.6+ 0.1- 20080730 675 0.3- 0.4- 20020913 644 0.2+ 0.0 20071019 675 0.3- 0.0 20081023 695 0.0 0.1- 20070909 675 0.4- 0.1- 20071019 675 0.1- 0.3+ 20081024 695 0.1+ 0.0 20070909 675 0.1+ 0.3+ 20071019 675 0.0 0.5- 20081024 695 0.1+ 0.0 20070910 675 0.3- 0.2+ 20071106 675 0.3- 0.4+ 20081130 688 0.0 0.0 20070910 675 0.2+ 0.4+ 20071106 675 0.2- 0.5+ 20081130 688 0.2- 0.2- 20070916 675 0.5- 0.5- 20071106 675 0.1- 0.4+
2007 RW10
Epoch 2009 June 18.0 TT = JDT 2455000.5 MPC M 51.52202 (2000.0) P Q n 0.00588282 Peri. 96.70611 +0.21411059 +0.97415142 T = 2446242.45152 JDT a 30.3910492 Node 187.02654 -0.95051237 +0.22477029 q = 21.1798626 e 0.3030888 Incl. 36.06276 +0.22512859 +0.02252407 P 168 H 6.2 G 0.15 U 2 From 40 observations at 6 oppositions, 1988-2008, mean residual 0".32. Residuals 19880617 675 0.0 0.0 20070916 675 0.4- 0.5- 20071129 675 0.2- 0.1- 19900623 675 0.1+ 0.1+ 20070916 675 0.6- 0.2- 20071129 675 0.2- 0.2+ 20011005 644 0.7- 0.3- 20071004 688 0.7- 0.2- Y 20071129 675 0.1- 0.2+ 20011005 644 0.0 0.1- 20071004 688 0.9+ 0.2+ Y 20080729 675 0.5+ 0.3- 20011013 644 0.1+ 0.1+ 20071004 688 0.2+ 0.5- Y 20080729 675 0.1- 0.2- 20011013 644 0.3- 0.1+ 20071014 246 0.9+ 0.5+ 20080729 675 0.3+ 0.2- 20011013 644 0.0 0.0 20071014 246 0.7+ 0.3+ 20080730 675 0.3- 0.4- 20020904 644 0.1+ 0.0 20071014 246 0.6+ 0.1- 20081023 695 0.1- 0.1- 20020912 644 0.5+ 0.4- 20071019 675 0.2- 0.0 20081024 695 0.0 0.1+ 20020913 644 0.2+ 0.1- 20071019 675 0.1- 0.3+ 20081024 695 0.0 0.0 20070909 675 0.3- 0.1- 20071019 675 0.1+ 0.5- 20081130 688 0.0 0.0 20070909 675 0.1+ 0.3+ 20071106 675 0.2- 0.4+ 20081130 688 0.3- 0.2- 20070910 675 0.3- 0.2+ 20071106 675 0.1- 0.5+ 20070910 675 0.2+ 0.4+ 20071106 675 0.1- 0.4+
DSS precovery images are from DSS plate archive scans, which are © copyright California Institute of Technology.