RECON: TNO occultation with 500883

Event between (500883) 13JJ65 and star GA0800:05507650 with event index number of 2335894

Geocentric closest approach at 2023/06/08 01:10:50 UTC

J2000 position of star is 16:52:14.9 -09:37:00
Equinox of date position of star is 16:53:31.6 -09:39:15
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 60 degrees from the moon. Moon is 80% illuminated.
Apparent brightness V=23.8

Object is 43.3 AU from the Sun and 42.3 AU from the Earth.
Apparent velocity is 25.3 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 281 seconds.
The 1-sigma cross-track error in the shadow position is 2400 km.

The object has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 7.9 sec chord
Diameter=81.5 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 
 
 

Star training set for 500883, (2023/06/08 01:11UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:50.9 -26:28:55  0.9 17.66  60
13Zet Oph      16:38:27.1 -10:36:46  2.6  3.83  63
20 Oph         16:51:07.9 -10:49:21  4.6  1.31  60
PPM 200131     16:55:04.3 -09:00:27  8.5  0.75  59
PPM 200088     16:53:12.5 -09:37:07  9.5  0.09  60
500883         16:53:32.1 -09:39:16 16.7        59
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 500883, (2023/06/08 01:11UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 17.66  60
13Zet Oph      16:37:09.6 -10:34:01  2.6  3.83  63
20 Oph         16:49:50.2 -10:47:01  4.6  1.31  60
PPM 200131     16:53:47.5 -08:58:15  8.5  0.75  59
PPM 200088     16:51:55.4 -09:34:51  9.5  0.09  60
500883         16:52:14.9 -09:37:00 16.7        60
Positions are for J2000

Event circumstances last updated at 2023/04/19 02:37:15 UT

Marc W. Buie, Southwest Research Institute

RECON