Event between (471155) 10GF65 and star GA0560:08490280 with event index number of 145844
Geocentric closest approach at 2018/07/18 21:10:18 UTC
J2000 position of star is 15:56:10.9 -32:15:31
Equinox of date position of star is 15:57:20.9 -32:18:40
Stellar brightness G=16.0,
use SENSEUP=128
Star is 52 degrees from the moon.
Moon is 40% illuminated.
TNO apparent brightness V=20.9
TNO is 23.4 AU from the Sun
and 22.8 AU from the Earth.
The TNO is moving 11.7
km/sec on the sky relative to the star, or,
2.5 arcsec/hr.
The 1-sigma error in the time of the event is 412 seconds.
The 1-sigma cross-track error in the shadow position is
4131 km.
The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 19.6 sec chord
Diameter=93.5 km assuming a 30% albedo -- 8.0 sec chord
Dynamical classification is CENTAURR
Star training set for 471155, (2018/07/18 21:10UT) Object RA Dec mag sep mel Antares 16:30:32.8 -26:28:18 0.9 9.29 56 Eta Lup 16:01:21.4 -38:26:53 2.8 6.19 55 PPM 294436 15:57:24.3 -31:50:19 6.5 0.47 51 PPM 294453 15:58:15.5 -32:18:15 9.9 0.19 52 471155 15:57:21.3 -32:18:41 16.0 52 Positions are for equinox of date
Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.
Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.
Star training set for 471155, (2018/07/18 21:10UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 9.29 56 Eta Lup 16:00:07.3 -38:23:48 2.8 6.19 55 PPM 294436 15:56:14.1 -31:47:09 6.5 0.47 51 PPM 294453 15:57:05.0 -32:15:06 9.9 0.19 52 471155 15:56:10.9 -32:15:31 16.0 52 Positions are for J2000
Event circumstances last updated at 2018/06/05 16:15:42 UT
Marc W. Buie, Southwest Research Institute