RECON: TNO occultation with 10LB136

Event between 10LB136 and star GA0720:32283216 with event index number of 322942

Geocentric closest approach at 2019/10/24 09:39:08 UTC

J2000 position of star is 19:38:54.9 -17:16:30
Equinox of date position of star is 19:40:02.0 -17:13:46
Stellar brightness G=17.0, use SENSEUP=128
Star is 134 degrees from the moon. Moon is 19% illuminated.
TNO apparent brightness V=21.2

TNO is 29.0 AU from the Sun and 29.1 AU from the Earth.
The TNO is moving 10.7 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 182 seconds.
The 1-sigma cross-track error in the shadow position is 1079 km.

The TNO has an absolute magnitude Hv=6.4
Diameter=313.3 km assuming a 5% albedo -- 29.3 sec chord
Diameter=127.9 km assuming a 30% albedo -- 12.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 10LB136, (2019/10/24 09:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:37.5 -26:28:27  0.9 44.67  92
Nunki          18:56:29.5 -26:16:13  2.0 13.55 124
PPM 236251     19:38:12.2 -18:11:08  5.7  1.05 134
PPM 236293     19:40:20.6 -16:51:46  6.7  0.37 134
PPM 236292     19:40:18.9 -17:21:27  9.3  0.14 134
10LB136        19:40:03.3 -17:13:43 17.0       135
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 10LB136, (2019/10/24 09:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 44.67  92
Nunki          18:55:15.9 -26:17:49  2.0 13.55 124
PPM 236251     19:37:03.4 -18:13:52  5.7  1.05 134
PPM 236293     19:39:12.4 -16:54:33  6.7  0.37 134
PPM 236292     19:39:10.5 -17:24:14  9.3  0.14 134
10LB136        19:38:54.9 -17:16:30 17.0       134
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:48:35 UT

Marc W. Buie, Southwest Research Institute

RECON