RECON: TNO occultation with 10JJ124

Event between 10JJ124 and star GA0760:18563030 with event index number of 2098193

Geocentric closest approach at 2022/06/26 21:45:52 UTC

J2000 position of star is 18:49:54.3 -12:25:35
Equinox of date position of star is 18:51:08.9 -12:23:58
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 147 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=20.7

TNO is 25.8 AU from the Sun and 24.8 AU from the Earth.
The TNO is moving 23.7 km/sec on the sky relative to the star, or, 4.7 arcsec/hr.
The 1-sigma error in the time of the event is 272 seconds.
The 1-sigma cross-track error in the shadow position is 5608 km.

The TNO has an absolute magnitude Hv=6.6
Diameter=284.5 km assuming a 5% albedo -- 12.0 sec chord
Diameter=116.1 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10JJ124, (2022/06/26 21:46UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.4 -26:28:48  0.9 35.80 177
Nunki          18:56:39.5 -26:16:00  2.0 13.93 149
PPM 235105     18:51:47.4 -13:32:40  6.5  1.16 147
PPM 235073     18:50:41.9 -11:45:41  8.5  0.65 146
PPM 235083     18:50:51.8 -12:20:02  9.2  0.10 147
10JJ124        18:51:09.9 -12:23:56 16.1       146
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 10JJ124, (2022/06/26 21:46UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 35.80 177
Nunki          18:55:15.9 -26:17:49  2.0 13.93 149
PPM 235105     18:50:31.2 -13:34:20  6.5  1.16 147
PPM 235073     18:49:26.7 -11:47:19  8.5  0.65 146
PPM 235083     18:49:36.3 -12:21:40  9.2  0.10 147
10JJ124        18:49:54.3 -12:25:35 16.1       147
Positions are for J2000

Event circumstances last updated at 2022/03/14 01:04:49 UT

Marc W. Buie, Southwest Research Institute

RECON