RECON: TNO occultation with 14KB102

Event between 14KB102 and star GA0740:11056820 with event index number of 2495334

Geocentric closest approach at 2022/07/20 02:34:32 UTC

J2000 position of star is 17:44:02.5 -14:19:34
Equinox of date position of star is 17:45:18.3 -14:20:04
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 116 degrees from the moon. Moon is 55% illuminated.
TNO apparent brightness V=22.3

TNO is 32.8 AU from the Sun and 32.0 AU from the Earth.
The TNO is moving 19.0 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 344 seconds.
The 1-sigma cross-track error in the shadow position is 1917 km.

The TNO has an absolute magnitude Hv=7.1
Diameter=230.2 km assuming a 5% albedo -- 12.1 sec chord
Diameter=94.0 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 
 
 

Star training set for 14KB102, (2022/07/20 02:35UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.6 -26:28:48  0.9 21.23 131
35Eta Oph      17:11:40.4 -15:45:04  2.6  8.25 124
PPM 233599     17:48:54.0 -14:43:57  5.9  0.95 115
PPM 233558     17:46:40.3 -14:27:14  8.3  0.35 115
PPM 233525     17:45:22.8 -14:25:44  8.6  0.10 116
14KB102        17:45:19.5 -14:20:04 16.3       115
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 14KB102, (2022/07/20 02:35UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 21.23 131
35Eta Oph      17:10:22.7 -15:43:29  2.6  8.25 124
PPM 233599     17:47:36.7 -14:43:34  5.9  0.95 115
PPM 233558     17:45:23.2 -14:26:47  8.3  0.35 115
PPM 233525     17:44:05.8 -14:25:14  8.6  0.10 116
14KB102        17:44:02.5 -14:19:34 16.3       116
Positions are for J2000

Event circumstances last updated at 2022/03/14 01:05:47 UT

Marc W. Buie, Southwest Research Institute

RECON