Event between 11QY100 and star GA0860:00820031 with event index number of 2125078
Geocentric closest approach at 2021/12/13 15:07:12 UTC
J2000 position of star is 05:57:24.8 -03:47:33
Equinox of date position of star is 05:58:29.9 -03:47:29
Stellar brightness G=16.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 69 degrees from the moon.
Moon is 75% illuminated.
TNO apparent brightness V=21.2
TNO is 19.6 AU from the Sun
and 18.7 AU from the Earth.
The TNO is moving 20.8
km/sec on the sky relative to the star, or,
5.5 arcsec/hr.
The 1-sigma error in the time of the event is 44 seconds.
The 1-sigma cross-track error in the shadow position is
681 km.
The TNO has an absolute magnitude Hv=8.2
Diameter=138.0 km assuming a 5% albedo -- 6.7 sec chord
Diameter=56.4 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is CENTAURR
Star training set for 11QY100, (2021/12/13 15:07UT) Object RA Dec mag sep mel Betelgeuse 05:56:21.6 +07:24:34 0.4 11.21 67 Saiph 05:48:47.9 -09:39:48 2.1 6.35 67 PPM 188595 05:56:35.3 -04:36:52 5.7 0.95 68 PPM 188609 05:57:12.8 -03:48:16 8.4 0.32 69 PPM 188622 05:58:04.5 -03:45:16 9.3 0.11 69 11QY100 05:58:30.3 -03:47:29 16.2 69 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 11QY100, (2021/12/13 15:07UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 11.21 67 Saiph 05:47:45.4 -09:40:11 2.1 6.35 67 PPM 188595 05:55:30.2 -04:37:00 5.7 0.95 68 PPM 188609 05:56:07.2 -03:48:22 8.4 0.32 69 PPM 188622 05:56:58.9 -03:45:20 9.3 0.11 69 11QY100 05:57:24.8 -03:47:33 16.2 69 Positions are for J2000
Event circumstances last updated at 2021/10/26 23:50:10 UT
Marc W. Buie, Southwest Research Institute