Event between (79983) 99DF9 and star GA0800:04227321 with event index number of 2400735
Geocentric closest approach at 2025/07/02 07:56:14 UTC
J2000 position of star is 12:25:19.4 -09:03:39
Equinox of date position of star is 12:26:34.3 -09:11:40
Stellar brightness G=14.2,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 6 degrees from the moon.
Moon is 45% illuminated.
Apparent brightness V=22.4
Object is 40.9 AU from the Sun
and 40.9 AU from the Earth.
Apparent velocity is 5.8
km/sec on the sky relative to the star, or,
0.7 arcsec/hr.
The 1-sigma error in the time of the event is 331 seconds.
The 1-sigma cross-track error in the shadow position is
1715 km.
The object has an absolute magnitude Hv=6.1
Diameter=361.4 km assuming a 5% albedo -- 62.9 sec chord
Diameter=147.5 km assuming a 30% albedo -- 25.7 sec chord
Dynamical classification is CLASSICAL
Star training set for 79983, (2025/07/02 07:56UT) Object RA Dec mag sep mel Spica 13:26:32.4 -11:17:37 1.0 14.88 18 4Gam Crv 12:17:07.3 -17:41:00 2.6 8.79 14 21 Vir 12:35:05.9 -09:35:33 5.6 2.12 7 PPM 195496 12:28:17.8 -08:58:14 8.2 0.47 6 PPM 195456 12:26:20.1 -09:23:57 9.6 0.21 6 79983 12:26:38.4 -09:12:06 14.2 6 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 79983, (2025/07/02 07:56UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 14.88 18 4Gam Crv 12:15:48.1 -17:32:30 2.6 8.79 14 21 Vir 12:33:46.6 -09:27:07 5.6 2.12 7 PPM 195496 12:26:58.8 -08:49:46 8.2 0.47 6 PPM 195456 12:25:01.0 -09:15:29 9.6 0.21 6 79983 12:25:19.4 -09:03:39 14.2 6 Positions are for J2000
Event circumstances last updated at 2024/03/04 05:35:37 UT
Marc W. Buie, Southwest Research Institute