Event between (5145) Pholus and star GA0780:10320761 with event index number of 1124026
Geocentric closest approach at 2021/06/08 01:41:08 UTC
J2000 position of star is 18:18:32.1 -11:51:19
Equinox of date position of star is 18:19:43.8 -11:50:43
Stellar brightness G=14.3,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 136 degrees from the moon.
Moon is 5% illuminated.
TNO apparent brightness V=21.7
TNO is 29.0 AU from the Sun
and 28.1 AU from the Earth.
The TNO is moving 24.4
km/sec on the sky relative to the star, or,
4.3 arcsec/hr.
The 1-sigma error in the time of the event is 95 seconds.
The 1-sigma cross-track error in the shadow position is
1291 km.
The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 9.4 sec chord
Diameter=93.5 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is CENTAURR
Star training set for 5145, (2021/06/08 01:41UT) Object RA Dec mag sep mel Antares 16:30:43.5 -26:28:40 0.9 29.50 161 Nunki 18:56:35.6 -26:16:06 2.0 16.83 129 PPM 234462 18:24:24.1 -12:00:09 6.3 1.15 135 PPM 234342 18:20:02.9 -12:26:38 8.3 0.60 136 PPM 234336 18:19:52.9 -12:05:47 8.6 0.25 136 5145 18:19:44.0 -11:50:43 14.3 136 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 5145, (2021/06/08 01:41UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 29.50 161 Nunki 18:55:15.9 -26:17:49 2.0 16.83 129 PPM 234462 18:23:12.2 -12:00:54 6.3 1.15 135 PPM 234342 18:18:50.7 -12:27:14 8.3 0.60 136 PPM 234336 18:18:40.9 -12:06:23 8.6 0.25 136 5145 18:18:32.1 -11:51:19 14.3 136 Positions are for J2000
Event circumstances last updated at 2021/05/21 01:06:23 UT
Marc W. Buie, Southwest Research Institute