Event between (491768) 12VV113 and star GA0920:00272456 with event index number of 207475
Geocentric closest approach at 2019/07/14 15:47:09 UTC
J2000 position of star is 03:11:03.9 +02:29:17
Equinox of date position of star is 03:12:04.5 +02:33:38
Stellar brightness G=15.9,
use SENSEUP=128
Star is 138 degrees from the moon.
Moon is 95% illuminated.
TNO apparent brightness V=23.7
TNO is 40.8 AU from the Sun
and 41.2 AU from the Earth.
The TNO is moving 18.1
km/sec on the sky relative to the star, or,
2.2 arcsec/hr.
The 1-sigma error in the time of the event is 364 seconds.
The 1-sigma cross-track error in the shadow position is
3085 km.
The TNO has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 11.1 sec chord
Diameter=81.5 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is SCATEXTD
Star training set for 491768, (2019/07/14 15:47UT) Object RA Dec mag sep mel Aldebaran 04:37:02.6 +16:32:49 0.8 25.14 163 Menkar 03:03:18.2 +04:09:55 2.5 2.72 137 97Kap2Cet 03:22:08.2 +03:44:41 6.2 2.78 141 PPM 146314 03:11:56.2 +02:23:19 8.1 0.18 138 PPM 146310 03:11:33.1 +02:37:48 11.0 0.15 138 491768 03:12:04.8 +02:33:39 15.9 139 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 491768, (2019/07/14 15:47UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 25.14 163 Menkar 03:02:16.8 +04:05:21 2.5 2.72 137 97Kap2Cet 03:21:06.9 +03:40:32 6.2 2.78 141 PPM 146314 03:10:55.4 +02:18:56 8.1 0.18 138 PPM 146310 03:10:32.1 +02:33:25 11.0 0.15 138 491768 03:11:03.9 +02:29:17 15.9 138 Positions are for J2000
Event circumstances last updated at 2019/06/07 22:24:42 UT
Marc W. Buie, Southwest Research Institute