Event between (19255) 94VK8 and star UC4-570-024077 with event index number of 91087
Geocentric closest approach at 2017/11/13 23:10:02 UTC
J2000 position of star is 06:06:41.8 +23:54:22
Equinox of date position of star is 06:07:42.1 +23:54:12
Stellar brightness R=15.5
Star is 88 degrees from the moon.
Moon is 19% illuminated.
TNO apparent brightness V=23.4
TNO is 42.9 AU from the Sun
and 42.2 AU from the Earth.
The TNO is moving 18.8
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 600 seconds.
The 1-sigma cross-track error in the shadow position is
3353 km.
The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 12.8 sec chord
Diameter=97.9 km assuming a 30% albedo -- 5.2 sec chord
Dynamical classification is CLASSICAL
Star training set for 19255, (2017/11/13 23:10UT) Object RA Dec mag sep mel Betelgeuse 05:56:08.4 +07:24:32 0.4 16.73 92 Alnath 05:27:25.4 +28:37:15 1.6 10.20 97 1 Gem 06:05:12.4 +23:15:39 4.2 0.87 89 PPM 095406 06:07:54.0 +23:38:08 8.1 0.27 88 PPM 095429 06:08:39.3 +23:44:09 9.3 0.26 88 19255 06:07:47.3 +23:54:11 15.5 88 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 19255, (2017/11/13 23:10UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 16.73 92 Alnath 05:26:17.5 +28:36:24 1.6 10.20 97 1 Gem 06:04:07.2 +23:15:47 4.2 0.87 89 PPM 095406 06:06:48.6 +23:38:19 8.1 0.27 88 PPM 095429 06:07:33.9 +23:44:21 9.3 0.26 88 19255 06:06:41.8 +23:54:22 15.5 88 Positions are for J2000
Event circumstances last updated at 2016/06/14 16:20:36 UT
Marc W. Buie, Southwest Research Institute