Event between (129772) 99HR11 and star GA0760:04993916 with event index number of 314645
Geocentric closest approach at 2020/01/04 07:39:10 UTC
J2000 position of star is 14:30:42.8 -12:23:44
Equinox of date position of star is 14:31:47.2 -12:28:57
Stellar brightness G=16.1,
use SENSEUP=128
Star is 166 degrees from the moon.
Moon is 61% illuminated.
TNO apparent brightness V=23.6
TNO is 42.2 AU from the Sun
and 42.6 AU from the Earth.
The TNO is moving 18.1
km/sec on the sky relative to the star, or,
2.1 arcsec/hr.
The 1-sigma error in the time of the event is 449 seconds.
The 1-sigma cross-track error in the shadow position is
3545 km.
The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 12.1 sec chord
Diameter=89.3 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is 7:4EEE
Star training set for 129772, (2020/01/04 07:39UT) Object RA Dec mag sep mel Spica 13:26:15.0 -11:15:55 1.0 16.08 173 27Bet Lib 15:18:05.2 -09:27:20 2.6 11.75 156 PPM 229046 14:38:03.9 -12:23:22 6.2 1.53 165 PPM 228914 14:32:23.5 -11:57:29 8.5 0.54 166 PPM 228880 14:30:37.0 -12:45:30 9.9 0.40 166 129772 14:31:48.0 -12:29:01 16.1 166 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 129772, (2020/01/04 07:39UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 16.08 173 27Bet Lib 15:17:00.3 -09:22:59 2.6 11.75 156 PPM 229046 14:36:58.6 -12:18:12 6.2 1.53 165 PPM 228914 14:31:18.5 -11:52:13 8.5 0.54 166 PPM 228880 14:29:31.8 -12:40:12 9.9 0.40 166 129772 14:30:42.8 -12:23:44 16.1 166 Positions are for J2000
Event circumstances last updated at 2019/10/15 22:03:55 UT
Marc W. Buie, Southwest Research Institute