Event between (487581) 15BE519 and star UC4-506-052802 with event index number of 186068
Geocentric closest approach at 2018/03/12 16:00:35 UTC
J2000 position of star is 11:15:18.6 +11:04:18
Equinox of date position of star is 11:16:14.6 +10:58:25
Stellar brightness R=15.9,
use SENSEUP=128
Star is 131 degrees from the moon.
Moon is 22% illuminated.
TNO apparent brightness V=22.2
TNO is 47.2 AU from the Sun
and 46.2 AU from the Earth.
The TNO is moving 25.9
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 241 seconds.
The 1-sigma cross-track error in the shadow position is
4109 km.
The TNO has an absolute magnitude Hv=5.5
Diameter=478.6 km assuming a 5% albedo -- 18.5 sec chord
Diameter=195.4 km assuming a 30% albedo -- 7.5 sec chord
Dynamical classification is SCATNEAR
Star training set for 487581, (2018/03/12 16:01UT) Object RA Dec mag sep mel Regulus 10:09:20.3 +11:52:39 1.3 16.42 147 Denebola 11:49:59.2 +14:28:13 2.1 8.94 124 73 Leo 11:16:48.9 +13:12:29 6.5 2.24 131 PPM 128059 11:13:07.0 +11:00:07 8.4 0.77 132 PPM 128101 11:16:18.1 +10:50:40 9.4 0.13 131 487581 11:16:15.5 +10:58:20 15.9 131 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 487581, (2018/03/12 16:01UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 16.42 147 Denebola 11:49:03.0 +14:34:17 2.1 8.94 124 73 Leo 11:15:51.9 +13:18:27 6.5 2.24 131 PPM 128059 11:12:10.1 +11:06:03 8.4 0.77 132 PPM 128101 11:15:21.3 +10:56:38 9.4 0.13 131 487581 11:15:18.6 +11:04:18 15.9 131 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:20:25 UT
Marc W. Buie, Southwest Research Institute