RECON: TNO occultation with 14HT199

Event between 14HT199 and star GA0720:05713262 with event index number of 265081

Geocentric closest approach at 2020/05/25 18:39:36 UTC

J2000 position of star is 15:50:15.8 -16:12:45
Equinox of date position of star is 15:51:18.5 -16:16:03
Stellar brightness G=16.0, use SENSEUP=128
Star is 138 degrees from the moon. Moon is 9% illuminated.
TNO apparent brightness V=21.9

TNO is 29.9 AU from the Sun and 28.9 AU from the Earth.
The TNO is moving 23.4 km/sec on the sky relative to the star, or, 4.0 arcsec/hr.
The 1-sigma error in the time of the event is 305 seconds.
The 1-sigma cross-track error in the shadow position is 5967 km.

The TNO has an absolute magnitude Hv=7.2
Diameter=213.8 km assuming a 5% albedo -- 9.1 sec chord
Diameter=87.3 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 14HT199, (2020/05/25 18:40UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.7 -26:28:32  0.9 13.68 149
8Bet1Sco       16:06:37.6 -19:51:35  2.6  5.09 143
46The Lib      15:54:59.4 -16:47:16  4.3  1.00 139
PPM 230770     15:49:20.2 -16:39:44  8.4  0.63 138
PPM 230836     15:51:53.6 -16:17:12  9.9  0.11 138
14HT199        15:51:25.3 -16:16:24 16.0       139
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 14HT199, (2020/05/25 18:40UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 13.68 149
8Bet1Sco       16:05:26.2 -19:48:20  2.6  5.09 143
46The Lib      15:53:49.7 -16:43:43  4.3  1.00 139
PPM 230770     15:48:10.6 -16:36:03  8.4  0.63 138
PPM 230836     15:50:44.2 -16:13:34  9.9  0.11 138
14HT199        15:50:15.8 -16:12:45 16.0       138
Positions are for J2000

Event circumstances last updated at 2018/05/31 17:34:47 UT

Marc W. Buie, Southwest Research Institute

RECON