Event between (418993) 09MS9 and star UC4-505-004116 with event index number of 91891
Geocentric closest approach at 2017/11/22 00:20:01 UTC
J2000 position of star is 02:38:09.6 +10:48:03
Equinox of date position of star is 02:39:04.4 +10:52:24
Stellar brightness R=15.5
Star is 122 degrees from the moon.
Moon is 11% illuminated.
TNO apparent brightness V=21.4
TNO is 14.0 AU from the Sun
and 13.1 AU from the Earth.
The TNO is moving 26.0
km/sec on the sky relative to the star, or,
9.9 arcsec/hr.
The 1-sigma error in the time of the event is 22 seconds.
The 1-sigma cross-track error in the shadow position is
605 km.
The TNO has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 2.4 sec chord
Diameter=25.8 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
Star training set for 418993, (2017/11/22 00:20UT) Object RA Dec mag sep mel Aldebaran 04:36:57.0 +16:32:38 0.8 29.14 151 Menkar 03:03:13.0 +04:09:32 2.5 8.99 126 PPM 118474 02:43:26.9 +10:49:01 6.3 1.06 123 PPM 118408 02:40:01.4 +10:42:47 7.7 0.27 122 418993 02:39:07.6 +10:52:39 15.5 123 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 418993, (2017/11/22 00:20UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 29.14 151 Menkar 03:02:16.8 +04:05:22 2.5 8.99 126 PPM 118474 02:42:28.9 +10:44:29 6.3 1.06 123 PPM 118408 02:39:03.5 +10:38:12 7.7 0.27 122 418993 02:38:09.6 +10:48:03 15.5 122 Positions are for J2000
Event circumstances last updated at 2016/12/02 19:04:32 UT
Marc W. Buie, Southwest Research Institute