Event between 13TH187 and star GA0960:00133947 with event index number of 2465341
Geocentric closest approach at 2023/01/31 12:14:21 UTC
J2000 position of star is 01:32:50.5 +06:58:41
Equinox of date position of star is 01:33:58.8 +07:05:22
Stellar brightness G=12.0,
use SENSEUP=16 with the MallinCam and and exposure
time of 250 milli-seconds with the QHY174 camera.
Star is 50 degrees from the moon.
Moon is 77% illuminated.
TNO apparent brightness V=23.6
TNO is 42.3 AU from the Sun
and 42.6 AU from the Earth.
The TNO is moving 13.4
km/sec on the sky relative to the star, or,
1.6 arcsec/hr.
The 1-sigma error in the time of the event is 466 seconds.
The 1-sigma cross-track error in the shadow position is
4673 km.
The TNO has an absolute magnitude Hv=7.2
Diameter=179.5 km assuming a 5% albedo -- 16.4 sec chord
Diameter=73.3 km assuming a 30% albedo -- 6.7 sec chord
Dynamical classification is CLASSICAL
Star training set for 13TH187, (2023/01/31 12:11UT) Object RA Dec mag sep mel Aldebaran 04:37:14.9 +16:33:14 0.8 45.71 9 6Bet Ari 01:55:55.2 +20:55:12 2.6 14.80 40 PPM 144653 01:30:15.6 +07:24:45 6.4 0.99 51 PPM 144765 01:35:58.5 +06:42:14 8.2 0.62 50 PPM 144741 01:34:57.4 +07:17:08 9.9 0.29 50 PPM 144740 01:34:52.9 +07:04:23 10.8 0.21 50 13TH187 01:34:03.0 +07:05:46 12.0 50 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 13TH187, (2023/01/31 12:11UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 45.71 9 6Bet Ari 01:54:38.5 +20:48:26 2.6 14.80 40 PPM 144653 01:29:03.1 +07:17:38 6.4 0.99 51 PPM 144765 01:34:46.1 +06:35:11 8.2 0.62 50 PPM 144741 01:33:44.8 +07:10:04 9.9 0.29 50 PPM 144740 01:33:40.4 +06:57:19 10.8 0.21 50 13TH187 01:32:50.5 +06:58:41 12.0 50 Positions are for J2000
Event circumstances last updated at 2021/10/05 01:29:07 UT
Marc W. Buie, Southwest Research Institute