Event between (8405) Asbolus and star GA1300:03239367 with event index number of 1330993
Geocentric closest approach at 2023/12/30 22:38:52 UTC
J2000 position of star is 05:57:30.9 +41:39:33
Equinox of date position of star is 05:59:12.6 +41:39:36
Stellar brightness G=14.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 55 degrees from the moon.
Moon is 86% illuminated.
Apparent brightness V=23.2
Object is 25.0 AU from the Sun
and 24.1 AU from the Earth.
Apparent velocity is 25.9
km/sec on the sky relative to the star, or,
5.3 arcsec/hr.
The 1-sigma error in the time of the event is 110 seconds.
The 1-sigma cross-track error in the shadow position is
918 km.
The object has an absolute magnitude Hv=9.2
Diameter=91.2 km assuming a 5% albedo -- 3.3 sec chord
Diameter=37.2 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
Star training set for 8405, (2023/12/30 22:39UT) Object RA Dec mag sep mel Pollux 07:46:47.0 +27:57:59 1.1 25.81 30 34Bet Aur 06:01:17.4 +44:56:50 1.9 3.31 55 38 Aur 06:05:01.8 +42:54:30 6.1 1.65 54 PPM 048605 06:00:14.0 +41:46:21 7.9 0.22 54 PPM 048584 05:58:59.9 +41:31:55 10.0 0.13 54 8405 05:59:13.3 +41:39:36 14.7 54 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 8405, (2023/12/30 22:39UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 25.81 30 34Bet Aur 05:59:31.6 +44:56:51 1.9 3.31 55 38 Aur 06:03:18.2 +42:54:39 6.1 1.65 54 PPM 048605 05:58:31.6 +41:46:20 7.9 0.22 54 PPM 048584 05:57:17.7 +41:31:51 10.0 0.13 54 8405 05:57:30.9 +41:39:33 14.7 54 Positions are for J2000
Event circumstances last updated at 2023/11/06 05:17:12 UT
Marc W. Buie, Southwest Research Institute