Event between (500839) 13GW137 and star GA0740:05275341 with event index number of 253350
Geocentric closest approach at 2020/03/17 06:55:31 UTC
J2000 position of star is 14:48:26.1 -15:56:30
Equinox of date position of star is 14:49:27.6 -16:01:04
Stellar brightness G=16.6,
use SENSEUP=128
Star is 53 degrees from the moon.
Moon is 41% illuminated.
TNO apparent brightness V=23.8
TNO is 40.2 AU from the Sun
and 39.6 AU from the Earth.
The TNO is moving 15.0
km/sec on the sky relative to the star, or,
1.9 arcsec/hr.
The 1-sigma error in the time of the event is 359 seconds.
The 1-sigma cross-track error in the shadow position is
2730 km.
The TNO has an absolute magnitude Hv=7.7
Diameter=173.8 km assuming a 5% albedo -- 11.6 sec chord
Diameter=70.9 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is CLASSICAL
Star training set for 500839, (2020/03/17 06:56UT) Object RA Dec mag sep mel Spica 13:26:15.6 -11:15:58 1.0 20.78 74 27Bet Lib 15:18:05.8 -09:27:23 2.6 9.57 49 8Alp1Lib 14:51:48.5 -16:04:48 5.1 0.54 53 PPM 229351 14:51:13.6 -15:36:31 7.2 0.58 53 PPM 229311 14:49:37.3 -16:26:32 9.3 0.42 53 500839 14:49:33.5 -16:01:30 16.6 53 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 500839, (2020/03/17 06:56UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 20.78 74 27Bet Lib 15:17:00.3 -09:22:59 2.6 9.57 49 8Alp1Lib 14:50:41.1 -15:59:51 5.1 0.54 53 PPM 229351 14:50:06.4 -15:31:33 7.2 0.58 53 PPM 229311 14:48:29.9 -16:21:32 9.3 0.42 53 500839 14:48:26.1 -15:56:30 16.6 53 Positions are for J2000
Event circumstances last updated at 2018/06/12 19:56:20 UT
Marc W. Buie, Southwest Research Institute