Event between 04VM131 and star UC4-522-013471 with event index number of 108235
Geocentric closest approach at 2017/12/11 18:42:39 UTC
J2000 position of star is 05:33:10.1 +14:22:38
Equinox of date position of star is 05:34:11.4 +14:23:19
Stellar brightness R=16.0,
use SENSEUP=128
Star is 104 degrees from the moon.
Moon is 35% illuminated.
TNO apparent brightness V=23.5
TNO is 31.4 AU from the Sun
and 30.4 AU from the Earth.
The TNO is moving 24.7
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 277 seconds.
The 1-sigma cross-track error in the shadow position is
1457 km.
The TNO has an absolute magnitude Hv=8.6
Diameter=115.3 km assuming a 5% albedo -- 4.7 sec chord
Diameter=47.1 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is CENTAURR
Star training set for 04VM131, (2017/12/11 18:43UT) Object RA Dec mag sep mel Betelgeuse 05:56:08.6 +07:24:32 0.4 8.82 99 Bellatrix 05:26:05.7 +06:21:52 1.6 8.27 107 35 Ori 05:34:55.5 +14:19:00 5.6 0.19 104 PPM 121051 05:32:31.8 +14:39:23 8.1 0.48 105 PPM 121085 05:33:46.4 +14:13:51 8.8 0.19 104 PPM 121094 05:34:15.2 +14:29:59 11.3 0.11 104 04VM131 05:34:11.4 +14:23:19 16.0 104 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 04VM131, (2017/12/11 18:43UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 8.82 99 Bellatrix 05:25:07.8 +06:20:58 1.6 8.27 107 35 Ori 05:33:54.3 +14:18:20 5.6 0.19 104 PPM 121051 05:31:30.4 +14:38:39 8.1 0.48 105 PPM 121085 05:32:45.2 +14:13:10 8.8 0.19 104 PPM 121094 05:33:13.9 +14:29:18 11.3 0.11 104 04VM131 05:33:10.1 +14:22:38 16.0 104 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:05:45 UT
Marc W. Buie, Southwest Research Institute