Event between 15BJ518 and star UC4-445-053821 with event index number of 142431
Geocentric closest approach at 2018/02/13 23:10:21 UTC
J2000 position of star is 11:40:51.8 -01:09:34
Equinox of date position of star is 11:41:46.9 -01:15:32
Stellar brightness R=15.2,
use SENSEUP=128
Star is 128 degrees from the moon.
Moon is 3% illuminated.
TNO apparent brightness V=22.0
TNO is 22.9 AU from the Sun
and 22.0 AU from the Earth.
The TNO is moving 19.9
km/sec on the sky relative to the star, or,
4.5 arcsec/hr.
The 1-sigma error in the time of the event is 151 seconds.
The 1-sigma cross-track error in the shadow position is
2370 km.
The TNO has an absolute magnitude Hv=8.3
Diameter=134.3 km assuming a 5% albedo -- 6.7 sec chord
Diameter=54.8 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is CENTAURR
Star training set for 15BJ518, (2018/02/13 23:10UT) Object RA Dec mag sep mel Regulus 10:09:20.1 +11:52:41 1.3 26.45 154 Denebola 11:49:59.0 +14:28:15 2.1 15.86 131 91Ups Leo 11:37:52.6 -00:55:26 4.3 1.03 129 PPM 178570 11:41:51.6 -00:46:30 7.8 0.49 128 PPM 178569 11:41:39.4 -01:37:25 9.5 0.37 128 15BJ518 11:41:47.5 -01:15:36 15.2 128 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 15BJ518, (2018/02/13 23:10UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 26.45 154 Denebola 11:49:03.0 +14:34:17 2.1 15.86 131 91Ups Leo 11:36:56.9 -00:49:25 4.3 1.03 129 PPM 178570 11:40:55.9 -00:40:28 7.8 0.49 128 PPM 178569 11:40:43.8 -01:31:23 9.5 0.37 128 15BJ518 11:40:51.8 -01:09:34 15.2 128 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:16:14 UT
Marc W. Buie, Southwest Research Institute