RECON: TNO occultation with 524460

Event between (524460) 02GF32 and star GA0660:07146118 with event index number of 1592502

Geocentric closest approach at 2023/07/06 20:25:09 UTC

J2000 position of star is 16:13:20.8 -22:15:22
Equinox of date position of star is 16:14:43.9 -22:18:50
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 86 degrees from the moon. Moon is 84% illuminated.
Apparent brightness V=23.0

Object is 44.8 AU from the Sun and 44.0 AU from the Earth.
Apparent velocity is 18.7 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 312 seconds.
The 1-sigma cross-track error in the shadow position is 2631 km.

The object has an absolute magnitude Hv=6.4
Diameter=302.0 km assuming a 5% albedo -- 16.7 sec chord
Diameter=123.3 km assuming a 30% albedo -- 6.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 524460, (2023/07/06 20:25UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.2 -26:28:56  0.9  5.55  82
7Del Sco       16:01:43.7 -22:41:12  2.3  3.03  89
PPM 265182     16:10:08.2 -23:44:47  5.9  1.78  87
PPM 265305     16:16:17.3 -22:26:17  7.8  0.38  86
PPM 265284     16:15:21.2 -22:29:50  9.6  0.23  86
524460         16:14:44.6 -22:18:52 16.6        86
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 524460, (2023/07/06 20:25UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  5.55  82
7Del Sco       16:00:20.0 -22:37:18  2.3  3.03  89
PPM 265182     16:08:43.7 -23:41:08  5.9  1.78  87
PPM 265305     16:14:53.3 -22:22:50  7.8  0.38  86
PPM 265284     16:13:57.2 -22:26:21  9.6  0.23  86
524460         16:13:20.8 -22:15:22 16.6        86
Positions are for J2000

Event circumstances last updated at 2023/04/20 03:43:51 UT

Marc W. Buie, Southwest Research Institute

RECON