Event between 12UD178 and star GA1120:00796161 with event index number of 1048268
Geocentric closest approach at 2020/03/28 10:26:06 UTC
J2000 position of star is 04:48:30.5 +23:40:51
Equinox of date position of star is 04:49:43.8 +23:42:54
Stellar brightness G=16.9,
use SENSEUP=128
Star is 22 degrees from the moon.
Moon is 14% illuminated.
TNO apparent brightness V=25.7
TNO is 35.8 AU from the Sun
and 36.2 AU from the Earth.
The TNO is moving 17.4
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 245 seconds.
The 1-sigma cross-track error in the shadow position is
1869 km.
The TNO has an absolute magnitude Hv=10.0
Diameter=201.4 km assuming a 5% albedo -- 3.5 sec chord
Diameter=82.2 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is 5:2EEE
Star training set for 12UD178, (2020/03/28 10:26UT) Object RA Dec mag sep mel Aldebaran 04:37:05.1 +16:32:54 0.8 7.76 18 3Iot Aur 04:58:18.9 +33:11:47 2.7 9.67 28 PPM 093742 04:46:55.9 +23:39:49 6.1 0.64 21 PPM 093805 04:51:01.5 +23:25:46 9.3 0.41 22 PPM 093782 04:49:29.4 +23:47:49 10.8 0.10 22 12UD178 04:49:44.0 +23:42:54 16.9 22 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 12UD178, (2020/03/28 10:26UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 7.76 18 3Iot Aur 04:56:59.6 +33:09:58 2.7 9.67 28 PPM 093742 04:45:42.5 +23:37:41 6.1 0.64 21 PPM 093805 04:49:48.1 +23:23:44 9.3 0.41 22 PPM 093782 04:48:15.8 +23:45:45 10.8 0.10 22 12UD178 04:48:30.5 +23:40:51 16.9 22 Positions are for J2000
Event circumstances last updated at 2020/03/10 21:11:57 UT
Marc W. Buie, Southwest Research Institute