Event between (281371) 08FC76 and star GA1040:00865145 with event index number of 318421
Geocentric closest approach at 2018/12/15 21:04:13 UTC
J2000 position of star is 05:25:02.1 +14:23:37
Equinox of date position of star is 05:26:06.3 +14:24:33
Stellar brightness G=16.6,
use SENSEUP=128
Star is 83 degrees from the moon.
Moon is 54% illuminated.
TNO apparent brightness V=19.7
TNO is 11.3 AU from the Sun
and 10.4 AU from the Earth.
The TNO is moving 22.0
km/sec on the sky relative to the star, or,
10.5 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
559 km.
The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 3.8 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
Star training set for 281371, (2018/12/15 21:04UT) Object RA Dec mag sep mel Betelgeuse 05:56:11.9 +07:24:33 0.4 10.17 89 Bellatrix 05:26:08.9 +06:21:55 1.6 8.04 82 PPM 120962 05:28:19.0 +15:16:21 6.1 1.01 83 PPM 120891 05:24:01.6 +14:22:40 8.3 0.51 82 PPM 120921 05:25:24.9 +14:24:14 9.3 0.17 83 PPM 120935 05:26:37.9 +14:30:43 11.4 0.16 83 281371 05:26:06.8 +14:24:34 16.6 83 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, (2018/12/15 21:04UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 10.17 89 Bellatrix 05:25:07.8 +06:20:58 1.6 8.04 82 PPM 120962 05:27:13.9 +15:15:27 6.1 1.01 83 PPM 120891 05:22:56.9 +14:21:40 8.3 0.51 82 PPM 120921 05:24:20.2 +14:23:16 9.3 0.17 83 PPM 120935 05:25:33.1 +14:29:47 11.4 0.16 83 281371 05:25:02.1 +14:23:37 16.6 83 Positions are for J2000
Event circumstances last updated at 2018/10/23 20:45:41 UT
Marc W. Buie, Southwest Research Institute