Event between (281371) 08FC76 and star GA0920:02526388 with event index number of 2457106
Geocentric closest approach at 2021/10/20 07:50:00 UTC
J2000 position of star is 07:18:39.4 +03:26:20
Equinox of date position of star is 07:19:47.7 +03:23:53
Stellar brightness G=15.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 86 degrees from the moon.
Moon is 100% illuminated.
TNO apparent brightness V=20.7
TNO is 12.7 AU from the Sun
and 12.6 AU from the Earth.
The TNO is moving 12.9
km/sec on the sky relative to the star, or,
5.1 arcsec/hr.
The 1-sigma error in the time of the event is 63 seconds.
The 1-sigma cross-track error in the shadow position is
1282 km.
The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 6.4 sec chord
Diameter=34.0 km assuming a 30% albedo -- 2.6 sec chord
Dynamical classification is CENTAURR
Star training set for 281371, (2021/10/20 07:50UT) Object RA Dec mag sep mel Betelgeuse 05:56:21.2 +07:24:34 0.4 21.15 65 Alhena 06:38:58.3 +16:22:44 1.9 16.41 75 PPM 152438 07:21:52.4 +03:32:22 6.2 0.54 87 PPM 152359 07:19:45.6 +03:54:19 8.5 0.51 86 PPM 152370 07:20:11.5 +03:29:27 9.1 0.13 86 281371 07:19:48.1 +03:23:52 15.3 86 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 281371, (2021/10/20 07:50UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 21.15 65 Alhena 06:37:42.8 +16:23:57 1.9 16.41 75 PPM 152438 07:20:43.7 +03:34:54 6.2 0.54 87 PPM 152359 07:18:36.7 +03:56:47 8.5 0.51 86 PPM 152370 07:19:02.8 +03:31:56 9.1 0.13 86 281371 07:18:39.4 +03:26:20 15.3 86 Positions are for J2000
Event circumstances last updated at 2021/08/29 01:41:57 UT
Marc W. Buie, Southwest Research Institute