RECON: TNO occultation with 183595

Event between (183595) 03TG58 and star GA1120:01857329 with event index number of 2431363

Geocentric closest approach at 2022/11/01 13:44:30 UTC

J2000 position of star is 06:10:06.5 +23:34:59
Equinox of date position of star is 06:11:29.8 +23:34:38
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 139 degrees from the moon. Moon is 54% illuminated.
TNO apparent brightness V=22.9

TNO is 41.9 AU from the Sun and 41.3 AU from the Earth.
The TNO is moving 13.5 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 1048 seconds.
The 1-sigma cross-track error in the shadow position is 3052 km.

The TNO has an absolute magnitude Hv=6.6
Diameter=291.1 km assuming a 5% albedo -- 21.6 sec chord
Diameter=118.8 km assuming a 30% albedo -- 8.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 183595, (2022/11/01 13:44UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:24.5 +07:24:34  0.4 16.57 131
Alhena         06:39:01.8 +16:22:40  1.9  9.67 144
3 Gem          06:11:07.2 +23:06:27  5.5  0.48 139
PPM 095455     06:09:34.7 +23:51:23  8.3  0.52 139
PPM 095556     06:12:18.8 +23:47:42  9.7  0.29 139
183595         06:11:30.1 +23:34:38 16.9       139
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 183595, (2022/11/01 13:44UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 16.57 131
Alhena         06:37:42.8 +16:23:57  1.9  9.67 144
3 Gem          06:09:44.0 +23:06:48  5.5  0.48 139
PPM 095455     06:08:11.0 +23:51:41  8.3  0.52 139
PPM 095556     06:10:55.2 +23:48:05  9.7  0.29 139
183595         06:10:06.5 +23:34:59 16.9       139
Positions are for J2000

Event circumstances last updated at 2022/10/02 04:09:26 UT

Marc W. Buie, Southwest Research Institute

RECON