Event between (160427) 05RL43 and star GA0980:00408100 with event index number of 1025357
Geocentric closest approach at 2020/12/24 19:43:26 UTC
J2000 position of star is 04:16:45.0 +08:31:38
Equinox of date position of star is 04:17:53.3 +08:34:40
Stellar brightness G=14.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 31 degrees from the moon.
Moon is 76% illuminated.
TNO apparent brightness V=21.8
TNO is 24.5 AU from the Sun
and 23.7 AU from the Earth.
The TNO is moving 20.6
km/sec on the sky relative to the star, or,
4.3 arcsec/hr.
The 1-sigma error in the time of the event is 42 seconds.
The 1-sigma cross-track error in the shadow position is
858 km.
The TNO has an absolute magnitude Hv=7.8
Diameter=166.0 km assuming a 5% albedo -- 8.1 sec chord
Diameter=67.8 km assuming a 30% albedo -- 3.3 sec chord
Dynamical classification is CENTAURR
Star training set for 160427, (2020/12/24 19:43UT) Object RA Dec mag sep mel Aldebaran 04:37:07.6 +16:32:59 0.8 9.25 35 Bellatrix 05:26:15.5 +06:22:01 1.6 17.09 48 49Mu Tau 04:16:40.6 +08:56:36 4.3 0.47 30 PPM 147320 04:14:39.7 +08:56:32 7.4 0.88 30 49Mu Tau 04:16:40.6 +08:56:36 4.3 0.47 30 PPM 147385 04:18:17.8 +08:30:05 11.2 0.13 31 160427 04:17:53.3 +08:34:40 14.7 31 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 160427, (2020/12/24 19:43UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 9.25 35 Bellatrix 05:25:07.8 +06:20:58 1.6 17.09 48 49Mu Tau 04:15:32.1 +08:53:32 4.3 0.47 30 PPM 147320 04:13:31.3 +08:53:24 7.4 0.88 30 49Mu Tau 04:15:32.1 +08:53:32 4.3 0.47 30 PPM 147385 04:17:09.5 +08:27:04 11.2 0.13 31 160427 04:16:45.0 +08:31:38 14.7 30 Positions are for J2000
Event circumstances last updated at 2020/12/20 23:34:05 UT
Marc W. Buie, Southwest Research Institute