RECON: TNO occultation with 13JK64

Event between 13JK64 and star GA0720:06440329 with event index number of 359260

Geocentric closest approach at 2019/06/23 22:14:37 UTC

J2000 position of star is 16:42:01.8 -16:42:34
Equinox of date position of star is 16:43:08.9 -16:44:43
Stellar brightness G=14.6, use SENSEUP=128
Star is 95 degrees from the moon. Moon is 64% illuminated.
TNO apparent brightness V=23.3

TNO is 33.9 AU from the Sun and 33.0 AU from the Earth.
The TNO is moving 21.7 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 93 seconds.
The 1-sigma cross-track error in the shadow position is 1308 km.

The TNO has an absolute magnitude Hv=8.0
Diameter=148.6 km assuming a 5% albedo -- 6.9 sec chord
Diameter=60.7 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 
 
 

Star training set for 13JK64, (2019/06/23 22:15UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.3 -26:28:25  0.9 10.15  96
13Zet Oph      16:38:14.0 -10:36:18  2.6  6.26  97
PPM 232030     16:42:42.1 -17:46:42  5.0  1.04  95
PPM 232029     16:42:41.6 -16:58:11  8.4  0.25  95
PPM 232049     16:43:25.0 -16:40:10  9.6  0.10  95
13JK64         16:43:09.0 -16:44:43 14.6        95
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 13JK64, (2019/06/23 22:15UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 10.15  96
13Zet Oph      16:37:09.6 -10:34:01  2.6  6.26  97
PPM 232030     16:41:34.4 -17:44:32  5.0  1.04  95
PPM 232029     16:41:34.3 -16:56:01  8.4  0.25  95
PPM 232049     16:42:17.8 -16:38:01  9.6  0.10  95
13JK64         16:42:01.8 -16:42:34 14.6        95
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:19:37 UT

Marc W. Buie, Southwest Research Institute

RECON