RECON: TNO occultation with 576162

Event between (576162) 12GT41 and star GA0880:06323166 with event index number of 2521054

Geocentric closest approach at 2022/09/23 01:45:46 UTC

J2000 position of star is 17:51:32.3 -00:15:42
Equinox of date position of star is 17:52:39.1 -00:15:57
Stellar brightness G=16.9, 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 8% illuminated.
TNO apparent brightness V=22.2

TNO is 16.8 AU from the Sun and 16.8 AU from the Earth.
The TNO is moving 17.2 km/sec on the sky relative to the star, or, 5.1 arcsec/hr.
The 1-sigma error in the time of the event is 45 seconds.
The 1-sigma cross-track error in the shadow position is 835 km.

The TNO has an absolute magnitude Hv=9.6
Diameter=73.8 km assuming a 5% albedo -- 4.3 sec chord
Diameter=30.1 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 576162, (2022/09/23 01:46UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:48.3 -26:28:50  0.9 32.80 103
60Bet Oph      17:44:35.8 +04:33:34  2.8  5.23 112
PPM 180184     17:53:10.0 -01:14:27  6.3  0.98 116
PPM 180176     17:51:19.5 -00:41:03  8.4  0.54 116
PPM 180182     17:52:34.4 -00:33:05  9.2  0.29 116
576162         17:52:42.3 -00:15:58 16.9       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 576162, (2022/09/23 01:46UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 32.80 103
60Bet Oph      17:43:28.3 +04:34:06  2.8  5.23 112
PPM 180184     17:51:59.5 -01:14:12  6.3  0.98 116
PPM 180176     17:50:09.3 -00:40:45  8.4  0.54 116
PPM 180182     17:51:24.2 -00:32:49  9.2  0.29 116
576162         17:51:32.3 -00:15:42 16.9       116
Positions are for J2000

Event circumstances last updated at 2021/09/04 02:46:47 UT

Marc W. Buie, Southwest Research Institute

RECON