Event between (535990) 15BW518 and star GA1100:03256288 with event index number of 2257868
Geocentric closest approach at 2024/04/29 22:28:00 UTC
J2000 position of star is 10:14:29.9 +20:02:17
Equinox of date position of star is 10:15:49.1 +19:55:04
Stellar brightness G=16.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 142 degrees from the moon.
Moon is 67% illuminated.
Apparent brightness V=22.7
Object is 38.2 AU from the Sun
and 37.9 AU from the Earth.
Apparent velocity is 6.5
km/sec on the sky relative to the star, or,
0.8 arcsec/hr.
The 1-sigma error in the time of the event is 337 seconds.
The 1-sigma cross-track error in the shadow position is
2442 km.
The object has an absolute magnitude Hv=6.7
Diameter=270.4 km assuming a 5% albedo -- 41.8 sec chord
Diameter=110.4 km assuming a 30% albedo -- 17.1 sec chord
Dynamical classification is CLASSICAL
Star training set for 535990, (2024/04/29 22:37UT) Object RA Dec mag sep mel Regulus 10:09:40.0 +11:50:50 1.3 8.20 140 PPM 100194 10:15:49.9 +21:02:45 6.5 1.13 143 PPM 100156 10:13:23.2 +19:59:51 8.5 0.58 143 PPM 100190 10:15:41.2 +20:18:52 9.7 0.40 142 PPM 100185 10:15:24.9 +20:06:30 10.8 0.22 142 535990 10:15:50.0 +19:55:00 16.3 142 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 535990, (2024/04/29 22:37UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 8.20 140 PPM 100194 10:14:29.5 +21:10:03 6.5 1.13 143 PPM 100156 10:12:03.0 +20:07:06 8.5 0.58 143 PPM 100190 10:14:21.0 +20:26:10 9.7 0.40 142 PPM 100185 10:14:04.8 +20:13:47 10.8 0.22 142 535990 10:14:29.9 +20:02:17 16.3 142 Positions are for J2000
Event circumstances last updated at 2024/01/29 04:20:40 UT
Marc W. Buie, Southwest Research Institute