Event between (5145) Pholus and star GA0740:25276843 with event index number of 1907669
Geocentric closest approach at 2028/06/21 17:38:00 UTC
J2000 position of star is 18:57:57.1 -15:24:20
Equinox of date position of star is 18:59:21.1 -15:22:16
Stellar brightness G=13.4,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 152 degrees from the moon.
Moon is 1% illuminated.
Apparent brightness V=22.0
Object is 31.0 AU from the Sun
and 30.1 AU from the Earth.
Apparent velocity is 25.2
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 139 seconds.
The 1-sigma cross-track error in the shadow position is
1546 km.
The object has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 9.2 sec chord
Diameter=93.5 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is CENTAURR
Star training set for 5145, (2028/06/21 17:38UT) Object RA Dec mag sep mel Antares 16:31:09.5 -26:29:33 0.9 36.25 172 Nunki 18:57:01.7 -26:15:31 2.0 10.91 155 PPM 235210 18:56:21.0 -15:33:55 4.8 0.80 152 PPM 235308 19:00:43.5 -15:49:08 8.4 0.53 151 PPM 235295 19:00:05.4 -15:17:22 9.4 0.14 151 5145 18:59:34.8 -15:21:55 13.4 151 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, (2028/06/21 17:38UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 36.25 172 Nunki 18:55:15.9 -26:17:49 2.0 10.91 155 PPM 235210 18:54:43.1 -15:36:12 4.8 0.80 152 PPM 235308 18:59:05.5 -15:51:36 8.4 0.53 151 PPM 235295 18:58:27.8 -15:19:48 9.4 0.14 151 5145 18:57:57.1 -15:24:20 13.4 152 Positions are for J2000
Event circumstances last updated at 2024/06/24 21:30:07 UT
Marc W. Buie, Southwest Research Institute