Event between 04HP79 and star UC4-366-069101 with event index number of 253810
Geocentric closest approach at 2020/04/02 13:21:56 UTC
J2000 position of star is 15:29:35.5 -16:55:22
Equinox of date position of star is 15:30:44.1 -16:59:29
Stellar brightness R=13.9,
use SENSEUP=64
Star is 117 degrees from the moon.
Moon is 62% illuminated.
TNO apparent brightness V=26.0
TNO is 38.9 AU from the Sun
and 38.1 AU from the Earth.
The TNO is moving 16.9
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 423 seconds.
The 1-sigma cross-track error in the shadow position is
4461 km.
The TNO has an absolute magnitude Hv=10.0
Diameter=255.9 km assuming a 5% albedo -- 3.6 sec chord
Diameter=104.5 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is 2:1E
Star training set for 04HP79, (2020/04/02 13:22UT) Object RA Dec mag sep mel Antares 16:30:39.2 -26:28:31 0.9 16.81 133 27Bet Lib 15:18:06.0 -09:27:23 2.6 8.14 112 32Zet1Lib 15:29:24.1 -16:47:09 5.6 0.38 117 PPM 230359 15:32:48.0 -17:05:28 8.1 0.50 118 PPM 230330 15:31:23.7 -16:49:38 9.9 0.23 117 04HP79 15:30:44.4 -16:59:29 13.9 117 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 04HP79, (2020/04/02 13:22UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 16.81 133 27Bet Lib 15:17:00.3 -09:22:59 2.6 8.14 112 32Zet1Lib 15:28:15.4 -16:43:00 5.6 0.38 117 PPM 230359 15:31:39.1 -17:01:24 8.1 0.50 118 PPM 230330 15:30:14.9 -16:45:32 9.9 0.23 117 04HP79 15:29:35.5 -16:55:22 13.9 117 Positions are for J2000
Event circumstances last updated at 2020/03/08 20:23:39 UT
Marc W. Buie, Southwest Research Institute