RECON: TNO occultation with 523644

Event between (523644) 10VX11 and star GA0900:00928233 with event index number of 2381929

Geocentric closest approach at 2022/09/13 01:12:17 UTC

J2000 position of star is 05:58:05.2 +01:23:09
Equinox of date position of star is 05:59:13.9 +01:23:11
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 67 degrees from the moon. Moon is 91% illuminated.
TNO apparent brightness V=21.2

TNO is 28.4 AU from the Sun and 28.6 AU from the Earth.
The TNO is moving 15.1 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 82 seconds.
The 1-sigma cross-track error in the shadow position is 1240 km.

The TNO has an absolute magnitude Hv=6.4
Diameter=317.7 km assuming a 5% albedo -- 21.2 sec chord
Diameter=129.7 km assuming a 30% albedo -- 8.7 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 
 
 

Star training set for 523644, (2022/09/13 01:12UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:24.1 +07:24:34  0.4  6.06  65
34Del Ori      05:33:10.0 -00:17:03  2.2  6.73  60
59 Ori         05:59:35.2 +01:50:15  6.0  0.46  66
PPM 149697     05:59:04.9 +01:13:30  7.8  0.17  66
PPM 149691     05:58:50.0 +01:24:11  9.8  0.11  66
523644         05:59:15.7 +01:23:11 16.5        67
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 523644, (2022/09/13 01:12UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  6.06  65
34Del Ori      05:32:00.4 -00:17:57  2.2  6.73  60
59 Ori         05:58:24.4 +01:50:13  6.0  0.46  66
PPM 149697     05:57:54.4 +01:13:27  7.8  0.17  66
PPM 149691     05:57:39.5 +01:24:08  9.8  0.11  66
523644         05:58:05.2 +01:23:09 16.5        66
Positions are for J2000

Event circumstances last updated at 2022/02/12 01:05:57 UT

Marc W. Buie, Southwest Research Institute

RECON