Event between (15820) 94TB and star GA1220:01352456 with event index number of 1497550
Geocentric closest approach at 2025/11/30 22:45:18 UTC
J2000 position of star is 04:59:49.2 +33:45:23
Equinox of date position of star is 05:01:24.3 +33:47:27
Stellar brightness G=16.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 65 degrees from the moon.
Moon is 78% illuminated.
Apparent brightness V=22.0
Object is 27.4 AU from the Sun
and 26.4 AU from the Earth.
Apparent velocity is 23.4
km/sec on the sky relative to the star, or,
4.4 arcsec/hr.
The 1-sigma error in the time of the event is 211 seconds.
The 1-sigma cross-track error in the shadow position is
971 km.
The object has an absolute magnitude Hv=7.6
Diameter=183.7 km assuming a 5% albedo -- 7.8 sec chord
Diameter=75.0 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is 3:2E
Star training set for 15820, (2025/11/30 22:45UT) Object RA Dec mag sep mel Aldebaran 04:37:24.6 +16:33:34 0.8 18.07 58 3Iot Aur 04:58:41.1 +33:12:17 2.7 0.83 64 PPM 069666 04:51:00.0 +32:37:52 6.0 2.49 62 PPM 069798 05:00:21.9 +34:25:48 8.5 0.68 64 PPM 069819 05:02:06.4 +33:46:13 9.7 0.12 65 15820 05:01:31.3 +33:47:36 16.4 65 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 15820, (2025/11/30 22:45UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 18.07 58 3Iot Aur 04:56:59.6 +33:09:58 2.7 0.83 64 PPM 069666 04:49:19.1 +32:35:16 6.0 2.49 62 PPM 069798 04:58:39.3 +34:23:32 8.5 0.68 64 PPM 069819 05:00:24.3 +33:44:02 9.7 0.12 65 15820 04:59:49.2 +33:45:23 16.4 65 Positions are for J2000
Event circumstances last updated at 2024/02/25 04:10:23 UT
Marc W. Buie, Southwest Research Institute