Event between (82158) 01FP185 and star GA0940:03980475 with event index number of 248545
Geocentric closest approach at 2020/02/12 07:34:50 UTC
J2000 position of star is 14:57:37.4 +04:55:51
Equinox of date position of star is 14:58:33.8 +04:51:22
Stellar brightness G=12.4,
use SENSEUP=16
Star is 38 degrees from the moon.
Moon is 87% illuminated.
TNO apparent brightness V=22.1
TNO is 37.7 AU from the Sun
and 37.5 AU from the Earth.
The TNO is moving 12.9
km/sec on the sky relative to the star, or,
1.7 arcsec/hr.
The 1-sigma error in the time of the event is 172 seconds.
The 1-sigma cross-track error in the shadow position is
4136 km.
The TNO has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 26.8 sec chord
Diameter=141.6 km assuming a 30% albedo -- 10.9 sec chord
Dynamical classification is SCATNEAR
Star training set for 82158, (2020/02/12 07:35UT) Object RA Dec mag sep mel Arcturus 14:16:34.9 +19:04:45 0.0 17.54 31 Unukalhai 15:45:15.6 +06:21:49 2.6 11.70 49 PPM 161289 15:08:40.3 +05:25:18 6.2 2.57 40 PPM 161112 14:57:42.3 +05:19:08 8.1 0.52 38 PPM 161119 14:58:04.5 +05:21:03 8.7 0.52 38 PPM 161122 14:58:30.0 +05:05:25 10.1 0.24 38 82158 14:58:37.7 +04:51:04 12.4 38 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 82158, (2020/02/12 07:35UT) Object RA Dec mag sep mel Arcturus 14:15:38.2 +19:10:19 0.0 17.54 31 Unukalhai 15:44:16.3 +06:25:33 2.6 11.70 49 PPM 161289 15:07:40.3 +05:29:53 6.2 2.57 40 PPM 161112 14:56:42.2 +05:23:56 8.1 0.52 38 PPM 161119 14:57:04.4 +05:25:51 8.7 0.52 38 PPM 161122 14:57:29.8 +05:10:12 10.1 0.24 38 82158 14:57:37.4 +04:55:51 12.4 38 Positions are for J2000
Event circumstances last updated at 2018/10/26 20:43:30 UT
Marc W. Buie, Southwest Research Institute