Event between (127871) 03FC128 and star UC4-440-054962 with event index number of 117716
Geocentric closest approach at 2018/05/03 23:44:25 UTC
J2000 position of star is 12:41:42.6 -02:02:57
Equinox of date position of star is 12:42:36.2 -02:08:40
Stellar brightness R=15.1,
use SENSEUP=128
Star is 78 degrees from the moon.
Moon is 85% illuminated.
TNO apparent brightness V=22.4
TNO is 33.9 AU from the Sun
and 33.1 AU from the Earth.
The TNO is moving 19.9
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 469 seconds.
The 1-sigma cross-track error in the shadow position is
5714 km.
The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 12.1 sec chord
Diameter=97.9 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is 5:4E
Star training set for 127871, (2018/05/03 23:44UT) Object RA Dec mag sep mel Spica 13:26:09.7 -11:15:23 1.0 14.12 65 Vindemiatrix 13:03:05.4 +10:51:39 2.8 13.97 78 38 Vir 12:54:07.6 -03:39:09 6.1 3.23 75 PPM 178863 12:44:34.7 -01:40:40 6.8 0.67 78 PPM 178853 12:43:52.5 -02:21:05 10.0 0.37 78 PPM 178846 12:42:28.2 -02:03:45 10.6 0.10 78 127871 12:42:39.2 -02:08:59 15.1 78 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 127871, (2018/05/03 23:44UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 14.12 65 Vindemiatrix 13:02:10.3 +10:57:33 2.8 13.97 78 38 Vir 12:53:10.9 -03:33:11 6.1 3.23 75 PPM 178863 12:43:38.2 -01:34:39 6.8 0.67 78 PPM 178853 12:42:55.9 -02:15:04 10.0 0.37 78 PPM 178846 12:41:31.7 -01:57:44 10.6 0.10 78 127871 12:41:42.6 -02:02:57 15.1 78 Positions are for J2000
Event circumstances last updated at 2017/05/18 18:02:31 UT
Marc W. Buie, Southwest Research Institute