RECON: TNO occultation with 469333

Event between (469333) 00PE30 and star GA0720:33601123 with event index number of 2250658

Geocentric closest approach at 2022/10/30 10:58:06 UTC

J2000 position of star is 22:52:00.4 -17:57:51
Equinox of date position of star is 22:53:10.1 -17:50:53
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 54 degrees from the moon. Moon is 30% illuminated.
TNO apparent brightness V=22.2

TNO is 41.9 AU from the Sun and 41.4 AU from the Earth.
The TNO is moving 10.6 km/sec on the sky relative to the star, or, 1.3 arcsec/hr.
The 1-sigma error in the time of the event is 181 seconds.
The 1-sigma cross-track error in the shadow position is 1532 km.

The TNO has an absolute magnitude Hv=5.9
Diameter=398.1 km assuming a 5% albedo -- 37.4 sec chord
Diameter=162.5 km assuming a 30% albedo -- 15.3 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 469333, (2022/10/30 11:00UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:54.4 -29:30:03  1.2 11.73  52
PPM 240908     22:55:18.9 -19:03:11  6.4  1.31  54
PPM 240756     22:48:49.6 -17:57:39  8.4  1.05  53
PPM 240875     22:53:58.0 -17:55:00  9.7  0.19  54
469333         22:53:13.4 -17:50:33 15.4        55
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 469333, (2022/10/30 11:00UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 11.73  52
PPM 240908     22:54:05.8 -19:10:30  6.4  1.31  54
PPM 240756     22:47:36.3 -18:04:55  8.4  1.05  53
PPM 240875     22:52:45.0 -18:02:18  9.7  0.19  54
469333         22:52:00.4 -17:57:51 15.4        54
Positions are for J2000

Event circumstances last updated at 2021/10/14 01:50:07 UT

Marc W. Buie, Southwest Research Institute

RECON