RECON: TNO occultation with 03UP292

Event between 03UP292 and star GA1240:02289853 with event index number of 1250794

Geocentric closest approach at 2022/09/01 20:50:55 UTC

J2000 position of star is 05:52:14.9 +34:31:37
Equinox of date position of star is 05:53:43.5 +34:31:51
Stellar brightness G=15.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 136 degrees from the moon. Moon is 30% illuminated.
TNO apparent brightness V=22.1

TNO is 29.5 AU from the Sun and 29.8 AU from the Earth.
The TNO is moving 16.8 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 172 seconds.
The 1-sigma cross-track error in the shadow position is 1668 km.

The TNO has an absolute magnitude Hv=7.2
Diameter=217.8 km assuming a 5% albedo -- 13.0 sec chord
Diameter=88.9 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 
 
 

Star training set for 03UP292, (2022/09/01 20:49UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:13.4 +16:33:11  0.8 24.83 155
Alnath         05:27:43.6 +28:37:28  1.6  8.10 142
31Ups Aur      05:52:35.3 +37:18:35  6.3  2.79 135
PPM 070958     05:54:23.1 +34:26:53  8.5  0.15 136
03UP292        05:53:45.4 +34:31:51 15.3       136
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 03UP292, (2022/09/01 20:49UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 24.83 155
Alnath         05:26:17.5 +28:36:23  1.6  8.10 142
31Ups Aur      05:51:02.5 +37:18:19  6.3  2.79 135
PPM 070958     05:52:52.6 +34:26:40  8.5  0.15 136
03UP292        05:52:14.9 +34:31:37 15.3       136
Positions are for J2000

Event circumstances last updated at 2022/03/13 02:15:59 UT

Marc W. Buie, Southwest Research Institute

RECON