Event between (29981) 99TD10 and star GA1060:02768510 with event index number of 1109838
Geocentric closest approach at 2021/11/20 22:04:09 UTC
J2000 position of star is 07:21:21.2 +16:09:40
Equinox of date position of star is 07:22:36.1 +16:07:07
Stellar brightness G=15.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 35 degrees from the moon.
Moon is 98% illuminated.
TNO apparent brightness V=24.1
TNO is 33.5 AU from the Sun
and 32.8 AU from the Earth.
The TNO is moving 15.2
km/sec on the sky relative to the star, or,
2.3 arcsec/hr.
The 1-sigma error in the time of the event is 353 seconds.
The 1-sigma cross-track error in the shadow position is
1541 km.
The TNO has an absolute magnitude Hv=8.7
Diameter=109.7 km assuming a 5% albedo -- 7.2 sec chord
Diameter=44.8 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is CENTAURR
Star training set for 29981, (2021/11/20 22:04UT) Object RA Dec mag sep mel Pollux 07:46:39.2 +27:58:18 1.1 13.09 38 Alhena 06:38:58.6 +16:22:43 1.9 10.47 25 51 Gem 07:14:37.6 +16:07:12 5.0 1.92 33 PPM 123895 07:22:31.6 +15:56:42 7.9 0.17 35 29981 07:22:36.5 +16:07:06 15.3 35 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 29981, (2021/11/20 22:04UT) Object RA Dec mag sep mel Pollux 07:45:18.0 +28:01:33 1.1 13.09 38 Alhena 06:37:42.8 +16:23:57 1.9 10.47 25 51 Gem 07:13:22.3 +16:09:31 5.0 1.92 33 PPM 123895 07:21:16.4 +15:59:15 7.9 0.17 35 29981 07:21:21.2 +16:09:40 15.3 35 Positions are for J2000
Event circumstances last updated at 2021/10/10 01:00:30 UT
Marc W. Buie, Southwest Research Institute