Event between 15RY280 and star GA1000:00071627 with event index number of 1796249
Geocentric closest approach at 2021/01/07 23:02:09 UTC
J2000 position of star is 00:45:48.3 +10:41:39
Equinox of date position of star is 00:46:53.8 +10:48:31
Stellar brightness G=16.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 155 degrees from the moon.
Moon is 33% illuminated.
TNO apparent brightness V=24.0
TNO is 41.3 AU from the Sun
and 41.4 AU from the Earth.
The TNO is moving 6.3
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 238 seconds.
The 1-sigma cross-track error in the shadow position is
1500 km.
The TNO has an absolute magnitude Hv=7.7
Diameter=174.6 km assuming a 5% albedo -- 27.7 sec chord
Diameter=71.3 km assuming a 30% albedo -- 11.3 sec chord
Dynamical classification is SCATEXTD
Star training set for 15RY280, (2021/01/07 23:02UT) Object RA Dec mag sep mel Algenib 00:14:19.3 +15:18:01 2.8 9.11 147 58 Psc 00:48:07.4 +12:05:17 5.5 1.31 155 PPM 116815 00:51:39.2 +10:31:32 8.3 1.20 156 PPM 116741 00:46:26.0 +10:25:37 9.8 0.40 155 PPM 116746 00:46:47.6 +10:58:05 10.7 0.16 155 15RY280 00:46:54.0 +10:48:32 16.2 155 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 15RY280, (2021/01/07 23:02UT) Object RA Dec mag sep mel Algenib 00:13:14.2 +15:11:01 2.8 9.11 147 58 Psc 00:47:01.6 +11:58:25 5.5 1.31 155 PPM 116815 00:50:33.4 +10:24:42 8.3 1.20 156 PPM 116741 00:45:20.3 +10:18:45 9.8 0.40 155 PPM 116746 00:45:41.8 +10:51:12 10.7 0.16 155 15RY280 00:45:48.3 +10:41:39 16.2 155 Positions are for J2000
Event circumstances last updated at 2020/12/19 23:06:05 UT
Marc W. Buie, Southwest Research Institute