RECON: TNO occultation with 133067

Event between (133067) 03FB128 and star GA0720:06022406 with event index number of 1100855

Geocentric closest approach at 2022/04/01 15:50:40 UTC

J2000 position of star is 16:17:37.8 -16:07:16
Equinox of date position of star is 16:18:53.8 -16:10:27
Stellar brightness G=15.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 131 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=22.7

TNO is 36.9 AU from the Sun and 36.3 AU from the Earth.
The TNO is moving 12.7 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 163 seconds.
The 1-sigma cross-track error in the shadow position is 1789 km.

The TNO has an absolute magnitude Hv=6.9
Diameter=251.2 km assuming a 5% albedo -- 19.8 sec chord
Diameter=102.6 km assuming a 30% albedo -- 8.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 133067, (2022/04/01 15:51UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:46.5 -26:28:46  0.9 10.67 126
8Bet1Sco       16:06:44.1 -19:51:53  2.6  4.69 133
PPM 231511     16:20:15.9 -14:55:31  5.8  1.29 131
PPM 231439     16:17:09.7 -15:56:32  7.9  0.48 132
PPM 231463     16:18:29.3 -16:16:10  9.8  0.14 131
133067         16:18:54.0 -16:10:27 15.3       131
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 133067, (2022/04/01 15:51UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 10.67 126
8Bet1Sco       16:05:26.2 -19:48:20  2.6  4.69 133
PPM 231511     16:19:00.4 -14:52:22  5.8  1.29 131
PPM 231439     16:15:53.7 -15:53:17  7.9  0.48 132
PPM 231463     16:17:13.1 -16:12:58  9.8  0.14 131
133067         16:17:37.8 -16:07:16 15.3       131
Positions are for J2000

Event circumstances last updated at 2022/03/14 01:00:55 UT

Marc W. Buie, Southwest Research Institute

RECON