Event between (307982) 04PG115 and star GA0980:18278311 with event index number of 2185793
Geocentric closest approach at 2025/12/07 17:11:38 UTC
J2000 position of star is 22:57:56.9 +08:46:54
Equinox of date position of star is 22:59:09.9 +08:54:41
Stellar brightness G=16.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 123 degrees from the moon.
Moon is 89% illuminated.
Apparent brightness V=21.2
Object is 40.6 AU from the Sun
and 40.5 AU from the Earth.
Apparent velocity is 9.0
km/sec on the sky relative to the star, or,
1.1 arcsec/hr.
The 1-sigma error in the time of the event is 168 seconds.
The 1-sigma cross-track error in the shadow position is
1630 km.
The object has an absolute magnitude Hv=5.0
Diameter=611.0 km assuming a 5% albedo -- 67.1 sec chord
Diameter=249.4 km assuming a 30% albedo -- 27.4 sec chord
Dynamical classification is SCATNEAR
Star training set for 307982, (2025/12/07 17:07UT) Object RA Dec mag sep mel Markab 23:06:03.3 +15:20:43 2.5 6.64 117 50Rho Peg 22:56:32.0 +08:57:18 4.9 0.67 123 PPM 173605 22:59:48.2 +09:57:53 8.2 1.05 122 PPM 173608 22:59:54.2 +08:56:41 8.6 0.16 122 307982 22:59:15.2 +08:55:15 16.0 122 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 307982, (2025/12/07 17:07UT) Object RA Dec mag sep mel Markab 23:04:45.8 +15:12:18 2.5 6.64 117 50Rho Peg 22:55:13.8 +08:48:59 4.9 0.67 123 PPM 173605 22:58:30.0 +09:49:32 8.2 1.05 122 PPM 173608 22:58:35.8 +08:48:19 8.6 0.16 122 307982 22:57:56.9 +08:46:54 16.0 123 Positions are for J2000
Event circumstances last updated at 2024/03/03 06:09:41 UT
Marc W. Buie, Southwest Research Institute