RECON: TNO occultation with 14KD102

Event between 14KD102 and star GA0720:18166637 with event index number of 1144406

Geocentric closest approach at 2021/06/17 13:59:55 UTC

J2000 position of star is 17:57:48.0 -16:17:07
Equinox of date position of star is 17:59:00.8 -16:17:10
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 99 degrees from the moon. Moon is 44% illuminated.
TNO apparent brightness V=22.3

TNO is 30.8 AU from the Sun and 29.8 AU from the Earth.
The TNO is moving 23.3 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 709 seconds.
The 1-sigma cross-track error in the shadow position is 2101 km.

The TNO has an absolute magnitude Hv=7.4
Diameter=200.5 km assuming a 5% albedo -- 8.6 sec chord
Diameter=81.8 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 14KD102, (2021/06/17 14:00UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:43.6 -26:28:40  0.9 22.90  81
35Eta Oph      17:11:36.6 -15:45:00  2.6 11.41  88
PPM 233766     17:57:33.2 -15:48:52  6.1  0.59  99
PPM 233797     17:58:30.1 -16:08:29  9.9  0.19  99
14KD102        17:59:02.4 -16:17:10 16.2       100
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 14KD102, (2021/06/17 14:00UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 22.90  81
35Eta Oph      17:10:22.7 -15:43:29  2.6 11.41  88
PPM 233766     17:56:19.0 -15:48:47  6.1  0.59  99
PPM 233797     17:57:15.8 -16:08:25  9.9  0.19  99
14KD102        17:57:48.0 -16:17:07 16.2        99
Positions are for J2000

Event circumstances last updated at 2021/01/02 20:15:12 UT

Marc W. Buie, Southwest Research Institute

RECON