Event between (535988) 15BU518 and star GA0720:05491564 with event index number of 2559622
Geocentric closest approach at 2025/01/13 20:39:18 UTC
J2000 position of star is 15:22:10.2 -16:23:10
Equinox of date position of star is 15:23:27.3 -16:28:00
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 119 degrees from the moon.
Moon is 100% illuminated.
TNO apparent brightness V=22.9
TNO is 33.2 AU from the Sun
and 33.6 AU from the Earth.
The TNO is moving 20.2
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 148 seconds.
The 1-sigma cross-track error in the shadow position is
2127 km.
The TNO has an absolute magnitude Hv=7.5
Diameter=190.6 km assuming a 5% albedo -- 9.4 sec chord
Diameter=77.8 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is SCATNEAR
Star training set for 535988, (2025/01/13 20:38UT) Object RA Dec mag sep mel Antares 16:30:56.8 -26:29:07 0.9 18.57 137 27Bet Lib 15:18:21.5 -09:28:25 2.6 7.12 115 32Zet1Lib 15:29:40.4 -16:48:07 5.6 1.50 121 PPM 230166 15:24:55.6 -16:39:07 7.6 0.37 119 PPM 230142 15:24:10.4 -16:25:12 9.8 0.15 119 535988 15:23:34.9 -16:28:28 16.8 119 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 535988, (2025/01/13 20:38UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 18.57 137 27Bet Lib 15:17:00.3 -09:22:59 2.6 7.12 115 32Zet1Lib 15:28:15.4 -16:43:00 5.6 1.50 121 PPM 230166 15:23:30.9 -16:33:51 7.6 0.37 119 PPM 230142 15:22:45.8 -16:19:55 9.8 0.15 119 535988 15:22:10.2 -16:23:10 16.8 119 Positions are for J2000
Event circumstances last updated at 2022/10/23 03:26:38 UT
Marc W. Buie, Southwest Research Institute