Event between 15VY172 and star GA1080:00385019 with event index number of 1060033
Geocentric closest approach at 2021/02/18 23:13:14 UTC
J2000 position of star is 03:31:24.4 +18:00:01
Equinox of date position of star is 03:32:36.1 +18:04:14
Stellar brightness G=14.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 3 degrees from the moon.
Moon is 42% illuminated.
TNO apparent brightness V=24.3
TNO is 43.6 AU from the Sun
and 43.7 AU from the Earth.
The TNO is moving 7.0
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 742 seconds.
The 1-sigma cross-track error in the shadow position is
4789 km.
The TNO has an absolute magnitude Hv=7.7
Diameter=174.6 km assuming a 5% albedo -- 24.8 sec chord
Diameter=71.3 km assuming a 30% albedo -- 10.1 sec chord
Dynamical classification is CLASSICAL
Star training set for 15VY172, (2021/02/18 23:13UT) Object RA Dec mag sep mel Aldebaran 04:37:08.2 +16:33:00 0.8 15.47 18 44Zet Per 03:55:28.0 +31:56:41 2.8 14.80 18 PPM 119253 03:40:37.7 +16:36:14 6.2 2.41 5 PPM 119148 03:32:33.4 +18:00:33 8.3 0.06 3 15VY172 03:32:36.7 +18:04:16 14.5 4 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 15VY172, (2021/02/18 23:13UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 15.47 18 44Zet Per 03:54:07.9 +31:53:01 2.8 14.80 18 PPM 119253 03:39:25.8 +16:32:11 6.2 2.41 5 PPM 119148 03:31:21.1 +17:56:18 8.3 0.06 3 15VY172 03:31:24.4 +18:00:01 14.5 3 Positions are for J2000
Event circumstances last updated at 2020/12/20 23:45:15 UT
Marc W. Buie, Southwest Research Institute