Event between (471272) 11FY9 and star GA0840:04664322 with event index number of 2572420
Geocentric closest approach at 2022/04/06 16:02:54 UTC
J2000 position of star is 15:32:50.0 -05:53:05
Equinox of date position of star is 15:33:59.3 -05:57:25
Stellar brightness G=13.9,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 150 degrees from the moon.
Moon is 26% illuminated.
TNO apparent brightness V=22.7
TNO is 23.4 AU from the Sun
and 22.6 AU from the Earth.
The TNO is moving 20.2
km/sec on the sky relative to the star, or,
4.4 arcsec/hr.
The 1-sigma error in the time of the event is 58 seconds.
The 1-sigma cross-track error in the shadow position is
1136 km.
The TNO has an absolute magnitude Hv=8.9
Diameter=97.7 km assuming a 5% albedo -- 4.8 sec chord
Diameter=39.9 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
Star training set for 471272, (2022/04/06 16:03UT) Object RA Dec mag sep mel Antares 16:30:46.6 -26:28:46 0.9 24.58 171 27Bet Lib 15:18:12.5 -09:27:49 2.6 5.26 149 PPM 198488 15:22:18.3 -05:54:14 5.4 2.91 148 PPM 198756 15:37:23.8 -06:27:43 8.1 0.98 151 PPM 198687 15:33:42.3 -06:01:17 9.6 0.10 150 471272 15:34:00.9 -05:57:31 13.9 150 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 471272, (2022/04/06 16:03UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 24.58 171 27Bet Lib 15:17:00.3 -09:22:59 2.6 5.26 149 PPM 198488 15:21:07.5 -05:49:30 5.4 2.91 148 PPM 198756 15:36:12.7 -06:23:22 8.1 0.98 151 PPM 198687 15:32:31.3 -05:56:50 9.6 0.10 150 471272 15:32:50.0 -05:53:05 13.9 150 Positions are for J2000
Event circumstances last updated at 2021/10/11 01:47:57 UT
Marc W. Buie, Southwest Research Institute