Event between (499522) 10PL66 and star GA1060:00147166 with event index number of 2653790
Geocentric closest approach at 2025/09/21 00:50:17 UTC
J2000 position of star is 01:26:09.4 +17:10:45
Equinox of date position of star is 01:27:27.4 +17:18:15
Stellar brightness G=16.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 142 degrees from the moon.
Moon is 1% illuminated.
Apparent brightness V=20.1
Object is 16.8 AU from the Sun
and 16.0 AU from the Earth.
Apparent velocity is 19.9
km/sec on the sky relative to the star, or,
6.2 arcsec/hr.
The 1-sigma error in the time of the event is 47 seconds.
The 1-sigma cross-track error in the shadow position is
941 km.
The object has an absolute magnitude Hv=7.8
Diameter=162.9 km assuming a 5% albedo -- 8.2 sec chord
Diameter=66.5 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is CENTAURR
Star training set for 499522, (2025/09/21 00:51UT) Object RA Dec mag sep mel Aldebaran 04:37:24.0 +16:33:33 0.8 45.29 99 6Bet Ari 01:56:04.0 +20:55:58 2.6 7.65 135 97 Psc 01:31:16.5 +18:29:16 6.0 1.47 141 PPM 117364 01:29:47.7 +17:12:41 7.0 0.55 142 PPM 117333 01:27:40.7 +17:15:32 9.1 0.06 142 499522 01:27:32.4 +17:18:44 16.4 142 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 499522, (2025/09/21 00:51UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 45.29 99 6Bet Ari 01:54:38.5 +20:48:26 2.6 7.65 135 97 Psc 01:29:53.0 +18:21:20 6.0 1.47 141 PPM 117364 01:28:24.6 +17:04:44 7.0 0.55 142 PPM 117333 01:26:17.7 +17:07:33 9.1 0.06 142 499522 01:26:09.4 +17:10:45 16.4 142 Positions are for J2000
Event circumstances last updated at 2024/03/04 05:36:11 UT
Marc W. Buie, Southwest Research Institute