RECON: TNO occultation with 13AZ60

Event between 13AZ60 and star GA0520:10117114 with event index number of 2040186

Geocentric closest approach at 2023/03/07 06:03:12 UTC

J2000 position of star is 16:13:01.7 -37:38:39
Equinox of date position of star is 16:14:33.8 -37:42:06
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 100% illuminated.
Apparent brightness V=23.2

Object is 18.2 AU from the Sun and 18.0 AU from the Earth.
Apparent velocity is 9.0 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 131 seconds.
The 1-sigma cross-track error in the shadow position is 933 km.

The object has an absolute magnitude Hv=10.3
Diameter=53.0 km assuming a 5% albedo -- 5.9 sec chord
Diameter=21.6 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 13AZ60, (2023/03/07 06:03UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:49.9 -26:28:53  0.9 11.73  87
Eta Lup        16:01:39.9 -38:27:38  2.8  2.65  84
PPM 294675     16:08:48.0 -36:49:00  6.0  1.45  85
PPM 294877     16:19:18.2 -37:48:34  7.9  0.94  87
PPM 294809     16:14:53.3 -37:29:13  9.6  0.22  86
13AZ60         16:14:34.4 -37:42:07 16.6        87
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 13AZ60, (2023/03/07 06:03UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 11.73  87
Eta Lup        16:00:07.3 -38:23:48  2.8  2.65  84
PPM 294675     16:07:16.3 -36:45:22  6.0  1.45  85
PPM 294877     16:17:45.3 -37:45:15  7.9  0.94  87
PPM 294809     16:13:20.8 -37:25:45  9.6  0.22  86
13AZ60         16:13:01.7 -37:38:39 16.6        86
Positions are for J2000

Event circumstances last updated at 2023/01/08 03:31:11 UT

Marc W. Buie, Southwest Research Institute

RECON