Event between 12UN177 and star GA1260:00643557 with event index number of 2307171
Geocentric closest approach at 2024/03/07 16:54:17 UTC
J2000 position of star is 02:56:06.3 +36:39:55
Equinox of date position of star is 02:57:28.5 +36:45:08
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 103 degrees from the moon.
Moon is 11% illuminated.
TNO apparent brightness V=23.3
TNO is 36.3 AU from the Sun
and 36.7 AU from the Earth.
The TNO is moving 19.4
km/sec on the sky relative to the star, or,
2.6 arcsec/hr.
The 1-sigma error in the time of the event is 188 seconds.
The 1-sigma cross-track error in the shadow position is
2047 km.
The TNO has an absolute magnitude Hv=7.5
Diameter=186.2 km assuming a 5% albedo -- 10.0 sec chord
Diameter=76.0 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is SCATEXTD
Star training set for 12UN177, (2024/03/07 17:00UT) Object RA Dec mag sep mel Aldebaran 04:37:18.7 +16:33:22 0.8 29.89 119 Algol 03:09:45.1 +41:02:49 2.1 4.89 107 24 Per 03:00:34.1 +35:16:42 4.9 1.60 103 PPM 068001 03:01:52.7 +36:28:58 8.0 0.90 104 PPM 067905 02:56:35.6 +36:40:16 9.5 0.23 103 PPM 067929 02:57:44.0 +36:46:54 10.5 0.03 103 12UN177 02:57:37.5 +36:45:42 16.8 104 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 12UN177, (2024/03/07 17:00UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 29.89 119 Algol 03:08:10.1 +40:57:20 2.1 4.89 107 24 Per 02:59:03.6 +35:10:59 4.9 1.60 103 PPM 068001 03:00:21.3 +36:23:17 8.0 0.90 104 PPM 067905 02:55:04.6 +36:34:27 9.5 0.23 103 PPM 067929 02:56:12.8 +36:41:07 10.5 0.03 103 12UN177 02:56:06.3 +36:39:55 16.8 103 Positions are for J2000
Event circumstances last updated at 2021/10/27 00:09:20 UT
Marc W. Buie, Southwest Research Institute