Event between (91205) 98US43 and star GA1040:01646640 with event index number of 1487677
Geocentric closest approach at 2025/12/18 19:33:43 UTC
J2000 position of star is 06:14:45.4 +15:04:16
Equinox of date position of star is 06:16:04.6 +15:03:45
Stellar brightness G=14.4,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 156 degrees from the moon.
Moon is 2% illuminated.
Apparent brightness V=24.0
Object is 38.5 AU from the Sun
and 37.5 AU from the Earth.
Apparent velocity is 25.3
km/sec on the sky relative to the star, or,
3.3 arcsec/hr.
The 1-sigma error in the time of the event is 394 seconds.
The 1-sigma cross-track error in the shadow position is
2056 km.
The object has an absolute magnitude Hv=8.2
Diameter=151.4 km assuming a 5% albedo -- 5.3 sec chord
Diameter=61.8 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is 3:2E
Star training set for 91205, (2025/12/18 19:27UT) Object RA Dec mag sep mel Betelgeuse 05:56:34.7 +07:24:35 0.4 9.04 154 Alhena 06:39:12.7 +16:22:30 1.9 5.68 152 PPM 122243 06:19:34.3 +14:22:16 6.2 1.06 155 PPM 122143 06:15:57.4 +15:16:58 8.3 0.23 156 PPM 122157 06:16:17.2 +14:55:15 10.1 0.14 156 91205 06:16:14.6 +15:03:41 14.4 155 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 91205, (2025/12/18 19:27UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 9.04 154 Alhena 06:37:42.8 +16:23:57 1.9 5.68 152 PPM 122243 06:18:05.6 +14:22:58 6.2 1.06 155 PPM 122143 06:14:28.1 +15:17:32 8.3 0.23 156 PPM 122157 06:14:48.2 +14:55:50 10.1 0.14 156 91205 06:14:45.4 +15:04:16 14.4 156 Positions are for J2000
Event circumstances last updated at 2023/01/24 02:44:26 UT
Marc W. Buie, Southwest Research Institute