Event between (523787) 15DV224 and star UC4-387-058339 with event index number of 347063
Geocentric closest approach at 2020/06/30 11:26:24 UTC
J2000 position of star is 12:20:13.6 -12:41:39
Equinox of date position of star is 12:21:17.1 -12:48:28
Stellar brightness R=15.4,
use SENSEUP=128
Star is 31 degrees from the moon.
Moon is 74% illuminated.
TNO apparent brightness V=24.6
TNO is 27.7 AU from the Sun
and 27.6 AU from the Earth.
The TNO is moving 9.5
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 191 seconds.
The 1-sigma cross-track error in the shadow position is
2027 km.
The TNO has an absolute magnitude Hv=10.0
Diameter=173.8 km assuming a 5% albedo -- 6.3 sec chord
Diameter=70.9 km assuming a 30% albedo -- 2.6 sec chord
Dynamical classification is CENTAURR
Star training set for 523787, (2020/06/30 11:26UT) Object RA Dec mag sep mel Spica 13:26:16.5 -11:16:04 1.0 15.96 15 4Gam Crv 12:16:51.8 -17:39:20 2.6 4.96 32 PPM 225705 12:21:59.3 -13:40:45 5.1 0.89 31 PPM 225703 12:21:54.6 -12:58:01 8.3 0.22 31 PPM 225680 12:20:50.7 -12:40:51 9.5 0.17 31 523787 12:21:17.2 -12:48:28 15.4 31 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 523787, (2020/06/30 11:26UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 15.96 15 4Gam Crv 12:15:48.1 -17:32:31 2.6 4.96 32 PPM 225705 12:20:55.7 -13:33:56 5.1 0.89 31 PPM 225703 12:20:51.0 -12:51:12 8.3 0.22 31 PPM 225680 12:19:47.1 -12:34:01 9.5 0.17 31 523787 12:20:13.6 -12:41:39 15.4 31 Positions are for J2000
Event circumstances last updated at 2020/06/21 04:19:59 UT
Marc W. Buie, Southwest Research Institute