Event between (42301) 01UR163 and star GA1040:00227409 with event index number of 204459
Geocentric closest approach at 2019/07/12 03:27:21 UTC
J2000 position of star is 02:23:32.8 +15:02:44
Equinox of date position of star is 02:24:33.4 +15:07:43
Stellar brightness G=15.0,
use SENSEUP=128
Star is 164 degrees from the moon.
Moon is 78% illuminated.
TNO apparent brightness V=21.5
TNO is 53.2 AU from the Sun
and 53.5 AU from the Earth.
The TNO is moving 13.4
km/sec on the sky relative to the star, or,
1.2 arcsec/hr.
The 1-sigma error in the time of the event is 180 seconds.
The 1-sigma cross-track error in the shadow position is
2085 km.
The TNO has an absolute magnitude Hv=4.1
Diameter=912.0 km assuming a 5% albedo -- 67.9 sec chord
Diameter=372.3 km assuming a 30% albedo -- 27.7 sec chord
Dynamical classification is 9:4EEEEE
Star training set for 42301, (2019/07/12 03:27UT) Object RA Dec mag sep mel Aldebaran 04:37:02.6 +16:32:49 0.8 31.85 164 6Bet Ari 01:55:43.4 +20:54:10 2.6 8.97 157 29 Ari 02:33:58.5 +15:07:12 6.0 2.26 166 PPM 118192 02:25:31.5 +15:36:44 7.9 0.53 164 PPM 118201 02:25:54.4 +14:45:24 9.7 0.49 164 PPM 118178 02:24:28.8 +14:56:08 10.2 0.20 164 42301 02:24:37.0 +15:08:01 15.0 164 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 42301, (2019/07/12 03:27UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 31.85 164 6Bet Ari 01:54:38.5 +20:48:27 2.6 8.97 157 29 Ari 02:32:54.1 +15:02:05 6.0 2.26 166 PPM 118192 02:24:27.2 +15:31:29 7.9 0.53 164 PPM 118201 02:24:50.3 +14:40:08 9.7 0.49 164 PPM 118178 02:23:24.7 +14:50:52 10.2 0.20 164 42301 02:23:32.8 +15:02:44 15.0 164 Positions are for J2000
Event circumstances last updated at 2018/06/12 02:23:09 UT
Marc W. Buie, Southwest Research Institute