Event between (530839) 11UK411 and star GA1040:00275888 with event index number of 1599032
Geocentric closest approach at 2020/02/14 23:30:34 UTC
J2000 position of star is 02:53:36.8 +14:40:27
Equinox of date position of star is 02:54:41.5 +14:45:10
Stellar brightness G=15.9,
use SENSEUP=128
Star is 177 degrees from the moon.
Moon is 61% illuminated.
TNO apparent brightness V=22.3
TNO is 32.9 AU from the Sun
and 33.1 AU from the Earth.
The TNO is moving 10.5
km/sec on the sky relative to the star, or,
1.6 arcsec/hr.
The 1-sigma error in the time of the event is 167 seconds.
The 1-sigma cross-track error in the shadow position is
1408 km.
The TNO has an absolute magnitude Hv=6.9
Diameter=251.2 km assuming a 5% albedo -- 23.9 sec chord
Diameter=102.6 km assuming a 30% albedo -- 9.7 sec chord
Dynamical classification is 5:3EE
Star training set for 530839, (2020/02/14 23:31UT) Object RA Dec mag sep mel Aldebaran 04:37:04.7 +16:32:53 0.8 24.69 154 Menkar 03:03:20.0 +04:10:03 2.5 10.80 172 43Sig Ari 02:52:36.5 +15:09:50 5.5 0.65 177 PPM 118624 02:53:31.1 +14:45:48 8.3 0.29 177 PPM 118641 02:54:45.2 +14:45:05 9.0 0.01 177 530839 02:54:43.6 +14:45:19 15.9 177 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 530839, (2020/02/14 23:31UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 24.69 154 Menkar 03:02:16.8 +04:05:21 2.5 10.80 172 43Sig Ari 02:51:29.6 +15:04:55 5.5 0.65 177 PPM 118624 02:52:24.4 +14:40:54 8.3 0.29 177 PPM 118641 02:53:38.5 +14:40:12 9.0 0.01 177 530839 02:53:36.8 +14:40:27 15.9 177 Positions are for J2000
Event circumstances last updated at 2019/07/02 02:29:05 UT
Marc W. Buie, Southwest Research Institute