Event between (523800) 17KZ31 and star GA0880:03911939 with event index number of 352897
Geocentric closest approach at 2019/12/22 07:34:36 UTC
J2000 position of star is 11:11:10.5 -01:56:09
Equinox of date position of star is 11:12:09.9 -02:02:29
Stellar brightness G=14.2,
use SENSEUP=64
Star is 52 degrees from the moon.
Moon is 18% illuminated.
TNO apparent brightness V=21.4
TNO is 12.1 AU from the Sun
and 11.9 AU from the Earth.
The TNO is moving 16.2
km/sec on the sky relative to the star, or,
6.8 arcsec/hr.
The 1-sigma error in the time of the event is 54 seconds.
The 1-sigma cross-track error in the shadow position is
809 km.
The TNO has an absolute magnitude Hv=10.2
Diameter=55.0 km assuming a 5% albedo -- 3.4 sec chord
Diameter=22.4 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
Star training set for 523800, (2019/12/22 07:35UT) Object RA Dec mag sep mel Regulus 10:09:26.0 +11:52:08 1.3 20.90 71 Denebola 11:50:04.7 +14:27:37 2.1 18.98 49 69 Leo 11:14:46.9 -00:10:43 5.3 1.97 52 PPM 178417 11:12:20.5 -01:30:12 8.2 0.54 53 PPM 178414 11:11:03.1 -01:55:16 8.9 0.31 53 523800 11:12:11.7 -02:02:40 14.2 52 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 523800, (2019/12/22 07:35UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 20.90 71 Denebola 11:49:02.9 +14:34:17 2.1 18.98 49 69 Leo 11:13:45.5 -00:04:10 5.3 1.97 52 PPM 178417 11:11:19.2 -01:23:41 8.2 0.54 53 PPM 178414 11:10:01.8 -01:48:45 8.9 0.31 53 523800 11:11:10.5 -01:56:09 14.2 52 Positions are for J2000
Event circumstances last updated at 2019/05/23 22:43:56 UT
Marc W. Buie, Southwest Research Institute