RECON: TNO occultation with 576162

Event between (576162) 12GT41 and star GA0860:09375351 with event index number of 2521523

Geocentric closest approach at 2024/07/07 14:04:22 UTC

J2000 position of star is 18:43:44.5 -02:28:11
Equinox of date position of star is 18:44:55.9 -02:26:43
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 146 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=21.9

TNO is 17.3 AU from the Sun and 16.4 AU from the Earth.
The TNO is moving 22.1 km/sec on the sky relative to the star, or, 6.7 arcsec/hr.
The 1-sigma error in the time of the event is 74 seconds.
The 1-sigma cross-track error in the shadow position is 837 km.

The TNO has an absolute magnitude Hv=9.5
Diameter=73.8 km assuming a 5% albedo -- 3.4 sec chord
Diameter=30.1 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 576162, (2024/07/07 14:05UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.9 -26:29:03  0.9 40.14 125
60Bet Oph      17:44:41.1 +04:33:32  2.8 16.62 130
5 Aql          18:47:44.5 -00:56:02  6.2  1.66 145
PPM 202087     18:45:39.1 -02:27:45  8.2  0.16 146
576162         18:45:01.3 -02:26:36 16.6       146
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, (2024/07/07 14:05UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 40.14 125
60Bet Oph      17:43:28.3 +04:34:06  2.8 16.62 130
5 Aql          18:46:28.6 -00:57:42  6.2  1.66 145
PPM 202087     18:44:22.3 -02:29:21  8.2  0.16 146
576162         18:43:44.5 -02:28:11 16.6       146
Positions are for J2000

Event circumstances last updated at 2022/10/21 03:08:44 UT

Marc W. Buie, Southwest Research Institute

RECON