Event between (505476) 13UL15 and star GA1000:00186801 with event index number of 2397525
Geocentric closest approach at 2028/09/10 21:19:04 UTC
J2000 position of star is 02:07:44.7 +11:15:39
Equinox of date position of star is 02:08:55.9 +11:21:55
Stellar brightness G=15.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 32 degrees from the moon.
Moon is 62% illuminated.
TNO apparent brightness V=23.3
TNO is 44.3 AU from the Sun
and 43.6 AU from the Earth.
The TNO is moving 16.6
km/sec on the sky relative to the star, or,
1.9 arcsec/hr.
The 1-sigma error in the time of the event is 675 seconds.
The 1-sigma cross-track error in the shadow position is
4932 km.
The TNO has an absolute magnitude Hv=6.8
Diameter=267.9 km assuming a 5% albedo -- 16.2 sec chord
Diameter=109.4 km assuming a 30% albedo -- 6.6 sec chord
Dynamical classification is CLASSICAL
Star training set for 505476, (2028/09/10 21:20UT) Object RA Dec mag sep mel Aldebaran 04:37:34.2 +16:33:54 0.8 36.29 10 6Bet Ari 01:56:13.8 +20:56:50 2.6 10.05 31 PPM 117850 02:00:58.3 +12:25:58 6.1 2.28 33 PPM 117955 02:08:11.5 +10:36:47 8.0 0.83 33 PPM 117973 02:09:39.6 +11:19:32 8.9 0.12 32 PPM 117965 02:09:03.7 +11:27:31 10.5 0.08 32 505476 02:09:17.0 +11:23:46 15.4 32 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 505476, (2028/09/10 21:20UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 36.29 10 6Bet Ari 01:54:38.5 +20:48:26 2.6 10.05 31 PPM 117850 01:59:25.9 +12:17:40 6.1 2.28 33 PPM 117955 02:06:39.5 +10:28:39 8.0 0.83 33 PPM 117973 02:08:07.3 +11:11:26 8.9 0.12 32 PPM 117965 02:07:31.4 +11:19:23 10.5 0.08 32 505476 02:07:44.7 +11:15:39 15.4 32 Positions are for J2000
Event circumstances last updated at 2022/02/19 00:42:49 UT
Marc W. Buie, Southwest Research Institute