Event between (118228) 96TQ66 and star GA1260:01789147 with event index number of 2111048
Geocentric closest approach at 2025/09/02 23:07:45 UTC
J2000 position of star is 05:11:40.9 +36:34:13
Equinox of date position of star is 05:13:18.9 +36:35:52
Stellar brightness G=16.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 158 degrees from the moon.
Moon is 75% illuminated.
Apparent brightness V=22.9
Object is 35.9 AU from the Sun
and 36.1 AU from the Earth.
Apparent velocity is 12.1
km/sec on the sky relative to the star, or,
1.7 arcsec/hr.
The 1-sigma error in the time of the event is 624 seconds.
The 1-sigma cross-track error in the shadow position is
4911 km.
The object has an absolute magnitude Hv=7.2
Diameter=224.9 km assuming a 5% albedo -- 18.3 sec chord
Diameter=91.8 km assuming a 30% albedo -- 7.5 sec chord
Dynamical classification is 3:2E
Star training set for 118228, (2025/09/02 23:08UT) Object RA Dec mag sep mel Aldebaran 04:37:23.8 +16:33:32 0.8 21.57 147 3Iot Aur 04:58:40.2 +33:12:15 2.7 4.55 155 PPM 070048 05:15:01.8 +37:21:54 6.5 0.83 158 PPM 069986 05:11:40.7 +37:02:06 8.3 0.56 157 PPM 069991 05:11:55.2 +36:33:42 8.8 0.30 157 118228 05:13:24.8 +36:35:58 16.1 158 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 118228, (2025/09/02 23:08UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 21.57 147 3Iot Aur 04:56:59.6 +33:09:58 2.7 4.55 155 PPM 070048 05:13:17.2 +37:20:12 6.5 0.83 158 PPM 069986 05:09:56.4 +37:00:16 8.3 0.56 157 PPM 069991 05:10:11.4 +36:31:53 8.8 0.30 157 118228 05:11:40.9 +36:34:13 16.1 158 Positions are for J2000
Event circumstances last updated at 2024/03/21 22:30:18 UT
Marc W. Buie, Southwest Research Institute