Event between (131697) 01XH255 and star GA1040:03309852 with event index number of 244096
Geocentric closest approach at 2020/01/25 16:55:27 UTC
J2000 position of star is 09:35:18.0 +14:28:29
Equinox of date position of star is 09:36:21.7 +14:23:14
Stellar brightness G=15.8,
use SENSEUP=128
Star is 172 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=23.4
TNO is 32.9 AU from the Sun
and 32.0 AU from the Earth.
The TNO is moving 23.6
km/sec on the sky relative to the star, or,
3.7 arcsec/hr.
The 1-sigma error in the time of the event is 120 seconds.
The 1-sigma cross-track error in the shadow position is
1698 km.
The TNO has an absolute magnitude Hv=8.2
Diameter=138.0 km assuming a 5% albedo -- 5.8 sec chord
Diameter=56.4 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is 5:4E
Star training set for 131697, (2020/01/25 16:55UT) Object RA Dec mag sep mel Regulus 10:09:26.3 +11:52:06 1.3 8.43 164 16Psi Leo 09:44:49.3 +13:55:44 5.3 2.09 170 PPM 126596 09:36:15.1 +13:59:07 7.5 0.40 172 PPM 126591 09:35:52.9 +14:19:39 9.1 0.14 172 131697 09:36:23.8 +14:23:04 15.8 172 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 131697, (2020/01/25 16:55UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 8.43 164 16Psi Leo 09:43:43.9 +14:01:18 5.3 2.09 170 PPM 126596 09:35:09.5 +14:04:32 7.5 0.40 172 PPM 126591 09:34:47.2 +14:25:04 9.1 0.14 172 131697 09:35:18.0 +14:28:29 15.8 172 Positions are for J2000
Event circumstances last updated at 2019/06/07 23:12:23 UT
Marc W. Buie, Southwest Research Institute