Event between 15AN281 and star UC4-546-051227 with event index number of 142232
Geocentric closest approach at 2018/05/10 15:56:11 UTC
J2000 position of star is 11:43:43.7 +19:08:45
Equinox of date position of star is 11:44:39.3 +19:02:47
Stellar brightness R=15.9,
use SENSEUP=128
Star is 167 degrees from the moon.
Moon is 26% illuminated.
TNO apparent brightness V=21.8
TNO is 43.4 AU from the Sun
and 42.9 AU from the Earth.
The TNO is moving 12.7
km/sec on the sky relative to the star, or,
1.5 arcsec/hr.
The 1-sigma error in the time of the event is 366 seconds.
The 1-sigma cross-track error in the shadow position is
2575 km.
The TNO has an absolute magnitude Hv=5.3
Diameter=512.9 km assuming a 5% albedo -- 40.3 sec chord
Diameter=209.4 km assuming a 30% albedo -- 16.5 sec chord
Dynamical classification is SCATEXTD
Star training set for 15AN281, (2018/05/10 15:56UT) Object RA Dec mag sep mel Regulus 10:09:20.9 +11:52:37 1.3 24.03 161 Denebola 11:49:59.7 +14:28:10 2.1 4.75 171 92 Leo 11:41:44.2 +21:15:02 5.3 2.31 165 PPM 128521 11:45:58.4 +19:23:53 8.4 0.47 167 PPM 128508 11:45:01.2 +19:04:18 9.7 0.09 167 15AN281 11:44:40.7 +19:02:38 15.9 167 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 15AN281, (2018/05/10 15:56UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 24.03 161 Denebola 11:49:03.0 +14:34:17 2.1 4.75 171 92 Leo 11:40:47.0 +21:21:09 5.3 2.31 165 PPM 128521 11:45:01.4 +19:30:00 8.4 0.47 167 PPM 128508 11:44:04.2 +19:10:25 9.7 0.09 167 15AN281 11:43:43.7 +19:08:45 15.9 167 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:31:00 UT
Marc W. Buie, Southwest Research Institute