Event between 10XE91 and star GA0980:01389407 with event index number of 2110014
Geocentric closest approach at 2021/12/21 00:25:12 UTC
J2000 position of star is 06:10:00.8 +08:21:22
Equinox of date position of star is 06:11:12.5 +08:21:01
Stellar brightness G=16.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 25 degrees from the moon.
Moon is 97% illuminated.
TNO apparent brightness V=22.7
TNO is 40.2 AU from the Sun
and 39.3 AU from the Earth.
The TNO is moving 25.1
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 122 seconds.
The 1-sigma cross-track error in the shadow position is
1523 km.
The TNO has an absolute magnitude Hv=6.7
Diameter=280.6 km assuming a 5% albedo -- 11.2 sec chord
Diameter=114.5 km assuming a 30% albedo -- 4.6 sec chord
Dynamical classification is SCATNEAR
Star training set for 10XE91, (2021/12/21 00:25UT) Object RA Dec mag sep mel Betelgeuse 05:56:21.7 +07:24:34 0.4 3.80 28 Alhena 06:38:58.9 +16:22:43 1.9 10.50 15 PPM 150217 06:18:09.6 +07:02:35 6.4 2.16 25 PPM 149948 06:09:19.5 +08:21:39 8.3 0.47 25 PPM 150002 06:11:03.5 +08:15:28 9.1 0.10 25 10XE91 06:11:12.6 +08:21:01 16.7 25 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 10XE91, (2021/12/21 00:25UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 3.80 28 Alhena 06:37:42.8 +16:23:57 1.9 10.50 15 PPM 150217 06:16:58.4 +07:03:08 6.4 2.16 25 PPM 149948 06:08:07.6 +08:21:56 8.3 0.47 25 PPM 150002 06:09:51.7 +08:15:48 9.1 0.10 25 10XE91 06:10:00.8 +08:21:22 16.7 25 Positions are for J2000
Event circumstances last updated at 2021/12/04 02:01:55 UT
Marc W. Buie, Southwest Research Institute