Event between 01FL185 and star GA0900:03857043 with event index number of 189428
Geocentric closest approach at 2019/05/24 02:49:41 UTC
J2000 position of star is 12:20:57.8 +01:25:39
Equinox of date position of star is 12:21:54.4 +01:19:31
Stellar brightness G=16.8,
use SENSEUP=128
Star is 120 degrees from the moon.
Moon is 74% illuminated.
TNO apparent brightness V=23.4
TNO is 41.5 AU from the Sun
and 41.0 AU from the Earth.
The TNO is moving 11.1
km/sec on the sky relative to the star, or,
1.3 arcsec/hr.
The 1-sigma error in the time of the event is 385 seconds.
The 1-sigma cross-track error in the shadow position is
2482 km.
The TNO has an absolute magnitude Hv=7.1
Diameter=226.0 km assuming a 5% albedo -- 20.3 sec chord
Diameter=92.2 km assuming a 30% albedo -- 8.3 sec chord
Dynamical classification is CLASSICAL
Star training set for 01FL185, (2019/05/24 02:50UT) Object RA Dec mag sep mel Spica 13:26:13.0 -11:15:43 1.0 20.33 101 Vindemiatrix 13:03:08.5 +10:51:19 2.8 13.98 114 15Eta Vir 12:20:53.9 -00:46:28 3.9 2.11 120 PPM 158694 12:18:57.1 +01:28:03 8.0 0.77 121 PPM 158711 12:20:00.5 +01:03:30 8.6 0.55 121 PPM 158748 12:21:33.6 +01:24:26 10.6 0.13 120 01FL185 12:21:57.3 +01:19:13 16.8 120 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 01FL185, (2019/05/24 02:50UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 20.33 101 Vindemiatrix 13:02:10.3 +10:57:33 2.8 13.98 114 15Eta Vir 12:19:54.3 -00:40:01 3.9 2.11 120 PPM 158694 12:17:57.5 +01:34:31 8.0 0.77 121 PPM 158711 12:19:00.9 +01:09:58 8.6 0.55 121 PPM 158748 12:20:34.1 +01:30:53 10.6 0.13 120 01FL185 12:20:57.8 +01:25:39 16.8 120 Positions are for J2000
Event circumstances last updated at 2018/06/11 23:16:16 UT
Marc W. Buie, Southwest Research Institute