RECON: TNO occultation with 182934

Event between (182934) 02GJ32 and star GA0680:06630234 with event index number of 1106413

Geocentric closest approach at 2022/05/02 19:38:41 UTC

J2000 position of star is 16:01:05.6 -21:14:09
Equinox of date position of star is 16:02:24.1 -21:17:49
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 178 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=21.9

TNO is 44.8 AU from the Sun and 43.9 AU from the Earth.
The TNO is moving 23.3 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 2260 seconds.
The 1-sigma cross-track error in the shadow position is 5609 km.

The TNO has an absolute magnitude Hv=5.4
Diameter=501.2 km assuming a 5% albedo -- 21.5 sec chord
Diameter=204.6 km assuming a 30% albedo -- 8.8 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 182934, (2022/05/02 19:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:46.8 -26:28:47  0.9  8.30 174
7Del Sco       16:01:39.5 -22:41:01  2.3  1.40 178
PPM 264922     15:58:59.0 -21:02:46  6.1  0.84 177
PPM 264995     16:02:24.6 -21:13:01  7.3  0.08 178
182934         16:02:24.4 -21:17:50 15.4       178
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 182934, (2022/05/02 19:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  8.30 174
7Del Sco       16:00:20.0 -22:37:18  2.3  1.40 178
PPM 264922     15:57:40.5 -20:59:00  6.1  0.84 177
PPM 264995     16:01:05.8 -21:09:20  7.3  0.08 178
182934         16:01:05.6 -21:14:09 15.4       178
Positions are for J2000

Event circumstances last updated at 2022/04/02 01:10:41 UT

Marc W. Buie, Southwest Research Institute

RECON