Event between 15AH281 and star GA1100:02939575 with event index number of 2763436
Geocentric closest approach at 2024/02/19 23:34:31 UTC
J2000 position of star is 07:26:30.9 +21:08:07
Equinox of date position of star is 07:27:49.4 +21:05:22
Stellar brightness G=16.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 11 degrees from the moon.
Moon is 82% illuminated.
TNO apparent brightness V=22.6
TNO is 52.4 AU from the Sun
and 51.6 AU from the Earth.
The TNO is moving 20.0
km/sec on the sky relative to the star, or,
1.9 arcsec/hr.
The 1-sigma error in the time of the event is 241 seconds.
The 1-sigma cross-track error in the shadow position is
3018 km.
The TNO has an absolute magnitude Hv=5.4
Diameter=503.5 km assuming a 5% albedo -- 25.1 sec chord
Diameter=205.6 km assuming a 30% albedo -- 10.3 sec chord
Dynamical classification is CENTAURR
Star training set for 15AH281, (2024/02/19 23:35UT) Object RA Dec mag sep mel Pollux 07:46:47.5 +27:57:57 1.1 8.10 13 63 Gem 07:29:10.2 +21:23:38 5.7 0.42 11 PPM 097507 07:28:15.7 +21:29:08 6.9 0.41 11 PPM 097510 07:28:23.5 +20:58:48 9.7 0.15 11 15AH281 07:27:56.7 +21:05:07 16.0 12 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 15AH281, (2024/02/19 23:35UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 8.10 13 63 Gem 07:27:44.2 +21:26:40 5.7 0.42 11 PPM 097507 07:26:49.7 +21:32:08 6.9 0.41 11 PPM 097510 07:26:57.8 +21:01:48 9.7 0.15 11 15AH281 07:26:30.9 +21:08:07 16.0 11 Positions are for J2000
Event circumstances last updated at 2022/02/02 01:19:00 UT
Marc W. Buie, Southwest Research Institute