RECON: TNO occultation with 533506

Event between (533506) 14HU199 and star GA0860:04260606 with event index number of 2165061

Geocentric closest approach at 2022/08/08 11:34:21 UTC

J2000 position of star is 13:52:16.5 -02:28:49
Equinox of date position of star is 13:53:25.4 -02:35:21
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 60 degrees from the moon. Moon is 82% illuminated.
TNO apparent brightness V=22.8

TNO is 41.0 AU from the Sun and 41.3 AU from the Earth.
The TNO is moving 15.0 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 237 seconds.
The 1-sigma cross-track error in the shadow position is 4249 km.

The TNO has an absolute magnitude Hv=6.5
Diameter=304.8 km assuming a 5% albedo -- 20.4 sec chord
Diameter=124.4 km assuming a 30% albedo -- 8.3 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 533506, (2022/08/08 11:34UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:23.2 -11:16:43  1.0 10.98  62
90 Vir         13:55:51.9 -01:36:48  5.1  1.15  60
PPM 179162     13:52:15.3 -02:54:29  8.1  0.43  60
PPM 179170     13:53:35.4 -02:28:00  9.8  0.13  60
533506         13:53:26.6 -02:35:28 16.7        59
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 533506, (2022/08/08 11:34UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 10.98  62
90 Vir         13:54:42.0 -01:30:12  5.1  1.15  60
PPM 179162     13:51:05.1 -02:47:49  8.1  0.43  60
PPM 179170     13:52:25.3 -02:21:21  9.8  0.13  60
533506         13:52:16.5 -02:28:49 16.7        60
Positions are for J2000

Event circumstances last updated at 2022/03/16 00:56:18 UT

Marc W. Buie, Southwest Research Institute

RECON