RECON: TNO occultation with 14KC102

Event between 14KC102 and star GA0780:08582581 with event index number of 2498052

Geocentric closest approach at 2022/07/18 14:59:24 UTC

J2000 position of star is 17:59:11.4 -11:03:50
Equinox of date position of star is 18:00:25.5 -11:03:51
Stellar brightness G=14.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 93 degrees from the moon. Moon is 70% illuminated.
TNO apparent brightness V=21.9

TNO is 29.7 AU from the Sun and 28.8 AU from the Earth.
The TNO is moving 20.5 km/sec on the sky relative to the star, or, 3.5 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 2640 km.

The TNO has an absolute magnitude Hv=7.1
Diameter=228.0 km assuming a 5% albedo -- 11.1 sec chord
Diameter=93.1 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 14KC102, (2022/07/18 14:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.6 -26:28:48  0.9 26.15 112
35Eta Oph      17:11:40.4 -15:45:04  2.6 12.75 104
PPM 233722     17:55:22.9 -11:20:25  6.5  1.27  94
PPM 233806     17:58:51.0 -11:32:05  8.5  0.61  93
PPM 233859     18:00:34.1 -11:10:01  9.3  0.11  93
14KC102        18:00:26.6 -11:03:51 14.7        93
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 14KC102, (2022/07/18 14:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 26.15 112
35Eta Oph      17:10:22.7 -15:43:29  2.6 12.75 104
PPM 233722     17:54:07.6 -11:20:15  6.5  1.27  94
PPM 233806     17:57:35.5 -11:32:02  8.5  0.61  93
PPM 233859     17:59:18.9 -11:10:01  9.3  0.11  93
14KC102        17:59:11.4 -11:03:50 14.7        93
Positions are for J2000

Event circumstances last updated at 2022/03/14 01:05:45 UT

Marc W. Buie, Southwest Research Institute

RECON