Event between (5145) Pholus and star GA0760:13151636 with event index number of 1056796
Geocentric closest approach at 2021/02/27 06:03:52 UTC
J2000 position of star is 18:21:38.2 -12:12:40
Equinox of date position of star is 18:22:48.7 -12:11:59
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 116 degrees from the moon.
Moon is 100% illuminated.
TNO apparent brightness V=21.9
TNO is 28.9 AU from the Sun
and 29.4 AU from the Earth.
The TNO is moving 17.8
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 60 seconds.
The 1-sigma cross-track error in the shadow position is
1065 km.
The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 12.9 sec chord
Diameter=93.5 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is CENTAURR
Star training set for 5145, (2021/02/27 06:04UT) Object RA Dec mag sep mel Antares 16:30:42.5 -26:28:38 0.9 29.95 93 Nunki 18:56:34.5 -26:16:07 2.0 16.15 125 PPM 234462 18:24:23.2 -12:00:10 6.3 0.43 116 PPM 234431 18:23:00.8 -11:54:41 8.2 0.29 116 PPM 234426 18:22:51.6 -12:23:37 9.7 0.19 116 5145 18:22:49.3 -12:11:59 16.5 116 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, (2021/02/27 06:04UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 29.95 93 Nunki 18:55:15.9 -26:17:49 2.0 16.15 125 PPM 234462 18:23:12.2 -12:00:54 6.3 0.43 116 PPM 234431 18:21:49.8 -11:55:23 8.2 0.29 116 PPM 234426 18:21:40.4 -12:24:18 9.7 0.19 116 5145 18:21:38.2 -12:12:40 16.5 116 Positions are for J2000
Event circumstances last updated at 2020/12/22 00:15:10 UT
Marc W. Buie, Southwest Research Institute