Event between (85627) 98HP151 and star UC4-334-087566 with event index number of 65887
Geocentric closest approach at 2017/04/27 14:40:50 UTC
J2000 position of star is 16:59:41.6 -23:13:47
Equinox of date position of star is 17:00:44.4 -23:15:16
Stellar brightness R=15.2,
use SENSEUP=128
Star is 156 degrees from the moon.
Moon is 2% illuminated.
TNO apparent brightness V=23.6
TNO is 41.4 AU from the Sun
and 40.6 AU from the Earth.
The TNO is moving 18.0
km/sec on the sky relative to the star, or,
2.2 arcsec/hr.
The 1-sigma error in the time of the event is 698 seconds.
The 1-sigma cross-track error in the shadow position is
4642 km.
The TNO has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 11.1 sec chord
Diameter=81.5 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is CLASSICAL
Star training set for 85627, (2017/04/27 14:41UT) Object RA Dec mag sep mel Antares 16:30:28.3 -26:28:08 0.9 7.58 161 23Tau Sco 16:36:57.8 -28:15:02 2.8 7.32 159 26 Oph 17:01:13.3 -25:00:51 5.8 1.76 156 PPM 266304 17:03:11.6 -23:18:44 8.4 0.57 156 PPM 266225 17:00:09.8 -23:23:31 9.6 0.19 156 85627 17:00:44.4 -23:15:16 15.2 156 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 85627, (2017/04/27 14:41UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:55 0.9 7.58 161 23Tau Sco 16:35:53.0 -28:12:58 2.8 7.32 159 26 Oph 17:00:09.6 -24:59:22 5.8 1.76 156 PPM 266304 17:02:08.7 -23:17:18 8.4 0.57 156 PPM 266225 16:59:06.9 -23:22:00 9.6 0.19 156 85627 16:59:41.6 -23:13:47 15.2 156 Positions are for J2000
Event circumstances last updated at 2017/04/24 16:04:02 UT
Marc W. Buie, Southwest Research Institute