Event between 11HN104 and star GA0840:05764910 with event index number of 1576093
Geocentric closest approach at 2020/04/28 23:09:46 UTC
J2000 position of star is 17:24:05.9 -05:21:56
Equinox of date position of star is 17:25:10.5 -05:22:58
Stellar brightness G=16.6,
use SENSEUP=128
Star is 149 degrees from the moon.
Moon is 30% illuminated.
TNO apparent brightness V=24.8
TNO is 29.7 AU from the Sun
and 29.0 AU from the Earth.
The TNO is moving 16.8
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 135 seconds.
The 1-sigma cross-track error in the shadow position is
1539 km.
The TNO has an absolute magnitude Hv=10.0
Diameter=152.1 km assuming a 5% albedo -- 3.6 sec chord
Diameter=62.1 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is 3:2E+6:4II
Star training set for 11HN104, (2020/04/28 23:10UT) Object RA Dec mag sep mel Antares 16:30:39.4 -26:28:31 0.9 24.78 144 35Eta Oph 17:11:32.7 -15:44:55 2.6 10.89 151 PPM 200658 17:27:42.7 -05:06:11 4.5 0.69 149 PPM 200565 17:21:23.2 -05:31:48 8.4 0.96 148 PPM 200625 17:25:20.9 -05:20:34 8.6 0.06 149 11HN104 17:25:10.9 -05:22:59 16.6 149 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 11HN104, (2020/04/28 23:10UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 24.78 144 35Eta Oph 17:10:22.7 -15:43:29 2.6 10.89 151 PPM 200658 17:26:37.8 -05:05:13 4.5 0.69 149 PPM 200565 17:20:18.1 -05:30:39 8.4 0.96 148 PPM 200625 17:24:15.9 -05:19:32 8.6 0.06 149 11HN104 17:24:05.9 -05:21:56 16.6 149 Positions are for J2000
Event circumstances last updated at 2020/03/10 21:21:05 UT
Marc W. Buie, Southwest Research Institute