Event between (471137) 10ET65 and star UC4-433-057441 with event index number of 146091
Geocentric closest approach at 2017/05/02 12:42:38 UTC
J2000 position of star is 12:33:04.8 -03:27:13
Equinox of date position of star is 12:33:56.2 -03:32:44
Stellar brightness R=16.5
Star is 64 degrees from the moon.
Moon is 44% illuminated.
TNO apparent brightness V=21.1
TNO is 39.7 AU from the Sun
and 38.8 AU from the Earth.
The TNO is moving 20.4
km/sec on the sky relative to the star, or,
2.6 arcsec/hr.
The 1-sigma error in the time of the event is 117 seconds.
The 1-sigma cross-track error in the shadow position is
1665 km.
The TNO has an absolute magnitude Hv=5.1
Diameter=575.5 km assuming a 5% albedo -- 28.2 sec chord
Diameter=234.9 km assuming a 30% albedo -- 11.5 sec chord
Dynamical classification is SCATNEAR
Star training set for 471137, (2017/05/02 12:43UT) Object RA Dec mag sep mel Spica 13:26:06.5 -11:15:05 1.0 15.04 79 4Gam Crv 12:16:42.0 -17:38:17 2.6 14.71 66 PPM 195577 12:32:32.3 -05:08:53 6.4 1.64 64 PPM 195629 12:36:21.1 -03:38:29 8.0 0.60 65 PPM 195611 12:35:06.8 -03:49:01 8.6 0.39 64 PPM 178812 12:33:34.2 -03:14:23 10.5 0.33 64 471137 12:33:58.3 -03:32:57 16.5 64 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 471137, (2017/05/02 12:43UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 15.04 79 4Gam Crv 12:15:48.2 -17:32:31 2.6 14.71 66 PPM 195577 12:31:38.7 -05:03:09 6.4 1.64 64 PPM 195629 12:35:27.6 -03:32:46 8.0 0.60 65 PPM 195611 12:34:13.3 -03:43:17 8.6 0.39 64 PPM 178812 12:32:40.7 -03:08:39 10.5 0.33 64 471137 12:33:04.8 -03:27:13 16.5 64 Positions are for J2000
Event circumstances last updated at 2016/09/01 18:12:32 UT
Marc W. Buie, Southwest Research Institute