RECON: TNO occultation with 10JE215

Event between 10JE215 and star GA0720:21088083 with event index number of 2090697

Geocentric closest approach at 2022/06/24 23:21:38 UTC

J2000 position of star is 18:17:18.2 -16:45:53
Equinox of date position of star is 18:18:35.4 -16:45:18
Stellar brightness G=12.9, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 134 degrees from the moon. Moon is 15% illuminated.
TNO apparent brightness V=22.8

TNO is 28.3 AU from the Sun and 27.2 AU from the Earth.
The TNO is moving 22.5 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 373 seconds.
The 1-sigma cross-track error in the shadow position is 2258 km.

The TNO has an absolute magnitude Hv=8.3
Diameter=133.0 km assuming a 5% albedo -- 5.9 sec chord
Diameter=54.3 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10JE215, (2022/06/24 23:22UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.4 -26:28:48  0.9 26.81 158
Nunki          18:56:39.5 -26:16:00  2.0 12.98 126
PPM 234283     18:18:30.1 -17:21:51  5.8  0.61 134
PPM 234354     18:20:21.7 -16:38:45  8.4  0.43 133
PPM 234285     18:18:35.0 -16:55:08  8.7  0.16 134
10JE215        18:18:36.3 -16:45:18 12.9       133
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 10JE215, (2022/06/24 23:22UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 26.81 158
Nunki          18:55:15.9 -26:17:49  2.0 12.98 126
PPM 234283     18:17:11.6 -17:22:26  5.8  0.61 134
PPM 234354     18:19:03.7 -16:39:24  8.4  0.43 133
PPM 234285     18:17:16.8 -16:55:43  8.7  0.16 134
10JE215        18:17:18.2 -16:45:53 12.9       134
Positions are for J2000

Event circumstances last updated at 2022/03/14 01:04:36 UT

Marc W. Buie, Southwest Research Institute

RECON