Event between 04HC79 and star UC4-341-082227 with event index number of 123319
Geocentric closest approach at 2017/05/03 23:47:07 UTC
J2000 position of star is 16:31:37.5 -21:53:55
Equinox of date position of star is 16:32:36.3 -21:55:58
Stellar brightness R=13.8
Star is 105 degrees from the moon.
Moon is 60% illuminated.
TNO apparent brightness V=23.4
TNO is 39.4 AU from the Sun
and 38.5 AU from the Earth.
The TNO is moving 21.3
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 298 seconds.
The 1-sigma cross-track error in the shadow position is
3051 km.
The TNO has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 9.5 sec chord
Diameter=81.5 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is CLASSICAL
Star training set for 04HC79, (2017/05/03 23:47UT) Object RA Dec mag sep mel Antares 16:30:28.4 -26:28:09 0.9 4.56 105 23Tau Sco 16:36:57.9 -28:15:02 2.8 6.39 107 4Psi Oph 16:25:07.2 -20:04:36 4.2 2.56 103 PPM 265578 16:30:21.4 -21:36:22 8.5 0.63 104 PPM 265648 16:33:29.9 -21:47:40 9.8 0.24 105 04HC79 16:32:39.5 -21:56:05 13.8 105 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 04HC79, (2017/05/03 23:47UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:55 0.9 4.56 105 23Tau Sco 16:35:53.0 -28:12:58 2.8 6.39 107 4Psi Oph 16:24:06.1 -20:02:15 4.2 2.56 103 PPM 265578 16:29:19.6 -21:34:08 8.5 0.63 104 PPM 265648 16:32:28.0 -21:45:31 9.8 0.24 105 04HC79 16:31:37.5 -21:53:55 13.8 105 Positions are for J2000
Event circumstances last updated at 2016/06/09 16:02:51 UT
Marc W. Buie, Southwest Research Institute