Event between (471149) 10FB49 and star GA0880:04187271 with event index number of 1138625
Geocentric closest approach at 2021/05/24 14:51:51 UTC
J2000 position of star is 13:37:50.0 -00:39:56
Equinox of date position of star is 13:38:55.3 -00:46:22
Stellar brightness G=12.9,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 16 degrees from the moon.
Moon is 95% illuminated.
TNO apparent brightness V=21.8
TNO is 26.1 AU from the Sun
and 25.3 AU from the Earth.
The TNO is moving 17.7
km/sec on the sky relative to the star, or,
3.5 arcsec/hr.
The 1-sigma error in the time of the event is 65 seconds.
The 1-sigma cross-track error in the shadow position is
945 km.
The TNO has an absolute magnitude Hv=7.5
Diameter=190.6 km assuming a 5% albedo -- 10.8 sec chord
Diameter=77.8 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is CENTAURR
Star training set for 471149, (2021/05/24 14:52UT) Object RA Dec mag sep mel Spica 13:26:19.4 -11:16:20 1.0 10.96 14 79Zet Vir 13:35:47.1 -00:42:17 3.4 0.79 16 PPM 179092 13:37:20.3 -01:02:24 7.6 0.48 16 PPM 179100 13:38:52.9 -00:44:03 9.4 0.04 16 471149 13:38:55.9 -00:46:26 12.9 15 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 471149, (2021/05/24 14:52UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 10.96 14 79Zet Vir 13:34:41.2 -00:35:45 3.4 0.79 16 PPM 179092 13:36:14.3 -00:55:53 7.6 0.48 16 PPM 179100 13:37:47.0 -00:37:33 9.4 0.04 16 471149 13:37:50.0 -00:39:56 12.9 16 Positions are for J2000
Event circumstances last updated at 2021/03/12 00:55:46 UT
Marc W. Buie, Southwest Research Institute