Event between 15BP518 and star GA0900:03984709 with event index number of 2638867
Geocentric closest approach at 2023/08/09 12:50:12 UTC
J2000 position of star is 13:27:54.7 +01:32:45
Equinox of date position of star is 13:29:02.7 +01:25:53
Stellar brightness G=14.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 138 degrees from the moon.
Moon is 39% illuminated.
TNO apparent brightness V=22.4
TNO is 43.0 AU from the Sun
and 43.4 AU from the Earth.
The TNO is moving 18.5
km/sec on the sky relative to the star, or,
2.1 arcsec/hr.
The 1-sigma error in the time of the event is 155 seconds.
The 1-sigma cross-track error in the shadow position is
2322 km.
The TNO has an absolute magnitude Hv=5.9
Diameter=387.3 km assuming a 5% albedo -- 21.1 sec chord
Diameter=158.1 km assuming a 30% albedo -- 8.6 sec chord
Dynamical classification is SCATNEAR
Star training set for 15BP518, (2023/08/09 12:50UT) Object RA Dec mag sep mel Spica 13:26:26.4 -11:17:02 1.0 12.73 144 Vindemiatrix 13:03:21.1 +10:49:58 2.8 11.38 127 PPM 159692 13:22:53.7 +01:57:50 5.7 1.65 137 PPM 159799 13:30:59.4 +00:58:24 7.0 0.65 139 PPM 159759 13:28:13.4 +01:06:28 9.6 0.39 138 PPM 159766 13:28:51.2 +01:21:07 10.9 0.10 138 15BP518 13:29:07.0 +01:25:27 14.8 138 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 15BP518, (2023/08/09 12:50UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 12.73 144 Vindemiatrix 13:02:10.2 +10:57:33 2.8 11.38 127 PPM 159692 13:21:41.5 +02:05:13 5.7 1.65 137 PPM 159799 13:29:47.0 +01:05:41 7.0 0.65 139 PPM 159759 13:27:01.1 +01:13:47 9.6 0.39 138 PPM 159766 13:27:38.9 +01:28:25 10.9 0.10 138 15BP518 13:27:54.7 +01:32:45 14.8 138 Positions are for J2000
Event circumstances last updated at 2022/03/12 02:03:09 UT
Marc W. Buie, Southwest Research Institute