Event between 99RW215 and star GA1120:00415258 with event index number of 167170
Geocentric closest approach at 2018/11/24 18:39:00 UTC
J2000 position of star is 03:27:40.6 +22:16:19
Equinox of date position of star is 03:28:46.6 +22:20:11
Stellar brightness G=15.0,
use SENSEUP=128
Star is 28 degrees from the moon.
Moon is 97% illuminated.
TNO apparent brightness V=22.8
TNO is 31.1 AU from the Sun
and 30.1 AU from the Earth.
The TNO is moving 24.3
km/sec on the sky relative to the star, or,
4.0 arcsec/hr.
The 1-sigma error in the time of the event is 688 seconds.
The 1-sigma cross-track error in the shadow position is
4571 km.
The TNO has an absolute magnitude Hv=7.9
Diameter=156.3 km assuming a 5% albedo -- 6.4 sec chord
Diameter=63.8 km assuming a 30% albedo -- 2.6 sec chord
Dynamical classification is 4:3E
Star training set for 99RW215, (2018/11/24 18:39UT) Object RA Dec mag sep mel Aldebaran 04:37:00.4 +16:32:45 0.8 17.08 13 44Zet Per 03:55:19.5 +31:56:18 2.8 11.27 24 65 Ari 03:25:31.7 +20:52:09 5.9 1.65 29 66 Ari 03:29:33.1 +22:52:05 7.2 0.56 28 PPM 092512 03:27:50.8 +22:24:34 10.0 0.23 29 99RW215 03:28:46.9 +22:20:12 15.0 28 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 99RW215, (2018/11/24 18:39UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 17.08 13 44Zet Per 03:54:07.9 +31:53:01 2.8 11.27 24 65 Ari 03:24:26.1 +20:48:12 5.9 1.65 29 66 Ari 03:28:26.6 +22:48:14 7.2 0.56 28 PPM 092512 03:26:44.5 +22:20:40 10.0 0.23 29 99RW215 03:27:40.6 +22:16:19 15.0 28 Positions are for J2000
Event circumstances last updated at 2018/10/24 21:07:23 UT
Marc W. Buie, Southwest Research Institute