Event between 99CM158 and star GA0700:05292175 with event index number of 252140
Geocentric closest approach at 2020/03/21 14:55:40 UTC
J2000 position of star is 13:47:42.0 -19:10:13
Equinox of date position of star is 13:48:45.8 -19:16:00
Stellar brightness G=13.7,
use SENSEUP=64
Star is 118 degrees from the moon.
Moon is 7% illuminated.
TNO apparent brightness V=23.0
TNO is 32.9 AU from the Sun
and 32.0 AU from the Earth.
The TNO is moving 20.2
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 172 seconds.
The 1-sigma cross-track error in the shadow position is
2346 km.
The TNO has an absolute magnitude Hv=7.8
Diameter=169.0 km assuming a 5% albedo -- 8.4 sec chord
Diameter=69.0 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is 3:2E
Star training set for 99CM158, (2020/03/21 14:56UT) Object RA Dec mag sep mel Spica 13:26:15.7 -11:15:59 1.0 9.67 127 89 Vir 13:50:58.4 -18:14:03 5.0 1.16 118 PPM 227913 13:51:41.3 -19:59:51 7.0 0.99 117 PPM 227874 13:49:56.1 -19:14:00 9.4 0.27 118 99CM158 13:48:48.4 -19:16:14 13.7 118 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 99CM158, (2020/03/21 14:56UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 9.67 127 89 Vir 13:49:52.1 -18:08:04 5.0 1.16 118 PPM 227913 13:50:34.5 -19:53:52 7.0 0.99 117 PPM 227874 13:48:49.6 -19:08:00 9.4 0.27 118 99CM158 13:47:42.0 -19:10:13 13.7 118 Positions are for J2000
Event circumstances last updated at 2019/06/07 23:23:32 UT
Marc W. Buie, Southwest Research Institute