RECON: TNO occultation with 03QC112

Event between 03QC112 and star GA0860:00158207 with event index number of 1548494

Geocentric closest approach at 2022/12/27 10:20:00 UTC

J2000 position of star is 01:57:23.0 -03:16:18
Equinox of date position of star is 01:58:32.1 -03:09:41
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 54 degrees from the moon. Moon is 22% illuminated.
TNO apparent brightness V=22.8

TNO is 25.0 AU from the Sun and 24.6 AU from the Earth.
The TNO is moving 8.1 km/sec on the sky relative to the star, or, 1.6 arcsec/hr.
The 1-sigma error in the time of the event is 495 seconds.
The 1-sigma cross-track error in the shadow position is 2860 km.

The TNO has an absolute magnitude Hv=8.6
Diameter=112.7 km assuming a 5% albedo -- 13.8 sec chord
Diameter=46.0 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 03QC112, (2022/12/27 10:20UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:14.5 +16:33:13  0.8 43.87  98
68Omi Cet      02:20:30.6 -02:52:28  2.0  5.49  60
PPM 184185     02:04:50.1 -03:59:40  5.4  1.78  56
PPM 184067     01:59:05.2 -03:36:05  8.5  0.46  54
PPM 184049     01:58:24.0 -03:08:57  9.7  0.04  54
03QC112        01:58:32.8 -03:09:37 15.7        55
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 03QC112, (2022/12/27 10:20UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 43.87  98
68Omi Cet      02:19:20.8 -02:58:45  2.0  5.49  60
PPM 184185     02:03:40.5 -04:06:14  5.4  1.78  56
PPM 184067     01:57:55.5 -03:42:46  8.5  0.46  54
PPM 184049     01:57:14.1 -03:15:38  9.7  0.04  54
03QC112        01:57:23.0 -03:16:18 15.7        54
Positions are for J2000

Event circumstances last updated at 2022/09/30 04:14:34 UT

Marc W. Buie, Southwest Research Institute

RECON