RECON: TNO occultation with 183595

Event between (183595) 03TG58 and star GA1120:02024258 with event index number of 2431674

Geocentric closest approach at 2026/02/26 00:38:10 UTC

J2000 position of star is 06:19:54.8 +23:23:28
Equinox of date position of star is 06:21:24.0 +23:22:44
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 9 degrees from the moon. Moon is 67% illuminated.
Apparent brightness V=22.9

Object is 41.7 AU from the Sun and 41.2 AU from the Earth.
Apparent velocity is 9.5 km/sec on the sky relative to the star, or, 1.1 arcsec/hr.
The 1-sigma error in the time of the event is 1756 seconds.
The 1-sigma cross-track error in the shadow position is 4556 km.

The object has an absolute magnitude Hv=6.6
Diameter=291.1 km assuming a 5% albedo -- 30.7 sec chord
Diameter=118.8 km assuming a 30% albedo -- 12.5 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 183595, (2026/02/26 00:38UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:35.3 +07:24:35  0.4 17.05  21
Alhena         06:39:13.3 +16:22:29  1.9  8.15  17
9 Gem          06:18:34.5 +23:43:47  6.1  0.76   8
PPM 095792     06:21:43.0 +23:23:29  8.2  0.05   9
183595         06:21:30.3 +23:22:41 16.6         9
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, (2026/02/26 00:38UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 17.05  21
Alhena         06:37:42.8 +16:23:57  1.9  8.15  17
9 Gem          06:16:58.7 +23:44:27  6.1  0.76   8
PPM 095792     06:20:07.6 +23:24:17  8.2  0.05   9
183595         06:19:54.8 +23:23:28 16.6         9
Positions are for J2000

Event circumstances last updated at 2024/06/10 01:52:42 UT

Marc W. Buie, Southwest Research Institute

RECON