Event between (281371) 08FC76 and star GA0840:03374724 with event index number of 2457807
Geocentric closest approach at 2023/12/14 05:30:11 UTC
J2000 position of star is 08:07:49.2 -04:49:31
Equinox of date position of star is 08:09:00.5 -04:53:46
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 141 degrees from the moon.
Moon is 2% illuminated.
Apparent brightness V=21.1
Object is 13.9 AU from the Sun
and 13.2 AU from the Earth.
Apparent velocity is 17.8
km/sec on the sky relative to the star, or,
6.7 arcsec/hr.
The 1-sigma error in the time of the event is 48 seconds.
The 1-sigma cross-track error in the shadow position is
646 km.
The object has an absolute magnitude Hv=9.5
Diameter=83.2 km assuming a 5% albedo -- 4.3 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
Star training set for 281371, (2023/12/14 05:30UT) Object RA Dec mag sep mel Sirius 06:46:12.3 -16:44:59 -1.5 23.50 135 15Rho Pup 08:08:33.9 -24:22:29 2.8 19.48 123 29Zet Mon 08:09:47.8 -03:03:18 4.0 1.85 142 PPM 191032 08:10:27.2 -04:37:27 7.5 0.45 141 PPM 191012 08:09:08.9 -05:03:46 8.7 0.17 140 281371 08:09:00.5 -04:53:46 16.5 140 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 281371, (2023/12/14 05:30UT) Object RA Dec mag sep mel Sirius 06:45:08.0 -16:43:24 -1.5 23.50 135 15Rho Pup 08:07:32.5 -24:18:14 2.8 19.48 123 29Zet Mon 08:08:35.6 -02:59:02 4.0 1.85 142 PPM 191032 08:09:15.7 -04:33:09 7.5 0.45 141 PPM 191012 08:07:57.6 -04:59:30 8.7 0.17 140 281371 08:07:49.2 -04:49:31 16.5 141 Positions are for J2000
Event circumstances last updated at 2023/12/13 05:30:57 UT
Marc W. Buie, Southwest Research Institute