Event between (385201) 99RN215 and star GA0920:00213152 with event index number of 2211838
Geocentric closest approach at 2025/01/30 10:52:32 UTC
J2000 position of star is 02:31:29.9 +02:10:33
Equinox of date position of star is 02:32:37.7 +02:16:18
Stellar brightness G=13.6,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 73 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=23.3
TNO is 46.0 AU from the Sun
and 46.1 AU from the Earth.
The TNO is moving 8.7
km/sec on the sky relative to the star, or,
0.9 arcsec/hr.
The 1-sigma error in the time of the event is 269 seconds.
The 1-sigma cross-track error in the shadow position is
5847 km.
The TNO has an absolute magnitude Hv=6.5
Diameter=303.4 km assuming a 5% albedo -- 34.8 sec chord
Diameter=123.9 km assuming a 30% albedo -- 14.2 sec chord
Dynamical classification is CLASSICAL
Star training set for 385201, (2025/01/30 10:53UT) Object RA Dec mag sep mel Aldebaran 04:37:21.8 +16:33:28 0.8 33.79 106 68Omi Cet 02:20:36.9 -02:51:53 2.0 5.98 69 PPM 145662 02:32:02.3 +00:21:57 5.7 1.93 72 PPM 145609 02:29:17.8 +02:04:19 7.4 0.90 72 PPM 145634 02:30:49.2 +02:18:00 10.0 0.49 73 385201 02:32:47.8 +02:17:09 13.6 73 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 385201, (2025/01/30 10:53UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 33.79 106 68Omi Cet 02:19:20.8 -02:58:45 2.0 5.98 69 PPM 145662 02:30:45.1 +00:15:20 5.7 1.93 72 PPM 145609 02:27:59.9 +01:57:39 7.4 0.90 72 PPM 145634 02:29:31.3 +02:11:21 10.0 0.49 73 385201 02:31:29.9 +02:10:33 13.6 73 Positions are for J2000
Event circumstances last updated at 2021/11/05 23:02:10 UT
Marc W. Buie, Southwest Research Institute