Event between (5145) Pholus and star GA0760:13515299 with event index number of 1314180
Geocentric closest approach at 2023/07/18 01:19:49 UTC
J2000 position of star is 18:26:01.9 -13:04:26
Equinox of date position of star is 18:27:20.8 -13:03:32
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 153 degrees from the moon.
Moon is 0% illuminated.
Apparent brightness V=21.9
Object is 29.8 AU from the Sun
and 28.8 AU from the Earth.
Apparent velocity is 24.5
km/sec on the sky relative to the star, or,
4.2 arcsec/hr.
The 1-sigma error in the time of the event is 105 seconds.
The 1-sigma cross-track error in the shadow position is
1376 km.
The object has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 9.5 sec chord
Diameter=93.5 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is CENTAURR
Star training set for 5145, (2023/07/18 01:20UT) Object RA Dec mag sep mel Antares 16:30:51.3 -26:28:56 0.9 30.41 132 Nunki 18:56:43.4 -26:15:55 2.0 14.90 164 PPM 234462 18:24:31.2 -12:00:05 6.3 1.26 152 PPM 234528 18:27:38.4 -13:20:44 8.1 0.29 154 PPM 234529 18:27:41.3 -12:58:31 8.9 0.12 153 5145 18:27:21.6 -13:03:31 16.8 154 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, (2023/07/18 01:20UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 30.41 132 Nunki 18:55:15.9 -26:17:49 2.0 14.90 164 PPM 234462 18:23:12.2 -12:00:54 6.3 1.26 152 PPM 234528 18:26:18.6 -13:21:39 8.1 0.29 154 PPM 234529 18:26:21.7 -12:59:26 8.9 0.12 153 5145 18:26:01.9 -13:04:26 16.8 153 Positions are for J2000
Event circumstances last updated at 2023/04/19 02:41:46 UT
Marc W. Buie, Southwest Research Institute