RECON: TNO occultation with 459865

Event between (459865) 13XZ8 and star GA0560:07494169 with event index number of 2281492

Geocentric closest approach at 2023/01/16 06:12:47 UTC

J2000 position of star is 15:00:58.0 -32:12:23
Equinox of date position of star is 15:02:21.9 -32:17:44
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 19 degrees from the moon. Moon is 38% illuminated.
TNO apparent brightness V=19.4

TNO is 8.7 AU from the Sun and 9.1 AU from the Earth.
The TNO is moving 24.6 km/sec on the sky relative to the star, or, 13.4 arcsec/hr.
The 1-sigma error in the time of the event is 22 seconds.
The 1-sigma cross-track error in the shadow position is 371 km.

The TNO has an absolute magnitude Hv=9.5
Diameter=70.8 km assuming a 5% albedo -- 3.0 sec chord
Diameter=28.9 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 459865, (2023/01/16 06:12UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:49.4 -26:28:52  0.9 20.08  30
Bet Lup        15:00:03.1 -43:13:31  2.7 10.94  29
PPM 293387     15:04:24.3 -32:43:58  5.4  0.61  19
PPM 293324     15:01:16.4 -32:44:11  8.5  0.50  19
PPM 293359     15:02:49.3 -32:02:26  9.5  0.27  19
459865         15:02:22.7 -32:17:48 16.2        19
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 459865, (2023/01/16 06:12UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.08  30
Bet Lup        14:58:31.9 -43:08:03  2.7 10.94  29
PPM 293387     15:02:59.3 -32:38:37  5.4  0.61  19
PPM 293324     14:59:51.6 -32:38:45  8.5  0.50  19
PPM 293359     15:01:24.8 -31:57:03  9.5  0.27  19
459865         15:00:58.0 -32:12:23 16.2        19
Positions are for J2000

Event circumstances last updated at 2022/10/24 03:54:05 UT

Marc W. Buie, Southwest Research Institute

RECON