Event between (531917) 13BN82 and star GA0980:03547448 with event index number of 2445295
Geocentric closest approach at 2025/01/28 02:06:01 UTC
J2000 position of star is 09:43:22.7 +08:15:19
Equinox of date position of star is 09:44:39.4 +08:08:39
Stellar brightness G=14.4,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 144 degrees from the moon.
Moon is 3% illuminated.
Apparent brightness V=22.2
Object is 35.5 AU from the Sun
and 34.6 AU from the Earth.
Apparent velocity is 23.4
km/sec on the sky relative to the star, or,
3.4 arcsec/hr.
The 1-sigma error in the time of the event is 91 seconds.
The 1-sigma cross-track error in the shadow position is
1484 km.
The object has an absolute magnitude Hv=6.7
Diameter=267.9 km assuming a 5% albedo -- 11.6 sec chord
Diameter=109.4 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is 7:4EEE
Star training set for 531917, (2025/01/28 02:03UT) Object RA Dec mag sep mel Regulus 10:09:42.3 +11:50:37 1.3 7.18 140 PPM 156172 09:47:29.3 +06:35:30 5.8 1.69 142 PPM 156131 09:45:03.6 +07:50:12 8.1 0.32 143 531917 09:44:42.5 +08:08:22 14.4 143 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 531917, (2025/01/28 02:03UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 7.18 140 PPM 156172 09:46:10.1 +06:42:30 5.8 1.69 142 PPM 156131 09:43:43.9 +07:57:09 8.1 0.32 143 531917 09:43:22.7 +08:15:19 14.4 143 Positions are for J2000
Event circumstances last updated at 2024/01/29 04:23:25 UT
Marc W. Buie, Southwest Research Institute