Event between (308460) 05SC278 and star GA1040:00233551 with event index number of 2185923
Geocentric closest approach at 2025/07/15 01:47:48 UTC
J2000 position of star is 02:27:42.7 +14:52:51
Equinox of date position of star is 02:29:01.5 +14:59:14
Stellar brightness G=14.4,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 55 degrees from the moon.
Moon is 81% illuminated.
Apparent brightness V=22.7
Object is 33.0 AU from the Sun
and 33.3 AU from the Earth.
Apparent velocity is 13.8
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 219 seconds.
The 1-sigma cross-track error in the shadow position is
1625 km.
The object has an absolute magnitude Hv=7.3
Diameter=208.9 km assuming a 5% albedo -- 15.0 sec chord
Diameter=85.3 km assuming a 30% albedo -- 6.1 sec chord
Dynamical classification is 5:4E
Star training set for 308460, (2025/07/15 01:46UT) Object RA Dec mag sep mel Aldebaran 04:37:23.3 +16:33:31 0.8 30.87 85 6Bet Ari 01:56:03.3 +20:55:55 2.6 9.85 50 29 Ari 02:34:18.3 +15:08:46 6.0 1.26 56 PPM 118192 02:25:51.4 +15:38:21 7.9 1.02 54 PPM 118254 02:29:50.1 +14:52:47 9.9 0.21 55 PPM 118237 02:28:35.6 +14:53:33 11.6 0.16 55 308460 02:29:06.7 +14:59:40 14.4 55 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 308460, (2025/07/15 01:46UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 30.87 85 6Bet Ari 01:54:38.5 +20:48:26 2.6 9.85 50 29 Ari 02:32:54.1 +15:02:05 6.0 1.26 56 PPM 118192 02:24:27.2 +15:31:29 7.9 1.02 54 PPM 118254 02:28:26.1 +14:46:00 9.9 0.21 55 PPM 118237 02:27:11.7 +14:46:44 11.6 0.16 55 308460 02:27:42.7 +14:52:51 14.4 55 Positions are for J2000
Event circumstances last updated at 2023/12/15 05:40:12 UT
Marc W. Buie, Southwest Research Institute