RECON: TNO occultation with 14GK54

Event between 14GK54 and star GA0720:05746733 with event index number of 1046718

Geocentric closest approach at 2020/09/20 10:46:20 UTC

J2000 position of star is 15:53:40.0 -16:52:34
Equinox of date position of star is 15:54:49.1 -16:56:05
Stellar brightness G=16.6, use SENSEUP=128
Star is 20 degrees from the moon. Moon is 13% illuminated.
TNO apparent brightness V=24.5

TNO is 26.6 AU from the Sun and 27.1 AU from the Earth.
The TNO is moving 20.4 km/sec on the sky relative to the star, or, 3.7 arcsec/hr.
The 1-sigma error in the time of the event is 236 seconds.
The 1-sigma cross-track error in the shadow position is 1392 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=140.0 km assuming a 5% albedo -- 3.0 sec chord
Diameter=57.1 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 14GK54, (2020/09/20 10:46UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:40.9 -26:28:34  0.9 12.65  31
8Bet1Sco       16:06:38.7 -19:51:38  2.6  4.05  23
46The Lib      15:55:00.5 -16:47:19  4.3  0.15  20
PPM 230825     15:51:39.8 -17:24:37  7.9  0.90  19
PPM 230905     15:54:37.8 -16:49:41  9.3  0.12  20
14GK54         15:54:50.9 -16:56:10 16.6        20
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 14GK54, (2020/09/20 10:46UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 12.65  31
8Bet1Sco       16:05:26.2 -19:48:20  2.6  4.05  23
46The Lib      15:53:49.7 -16:43:43  4.3  0.15  20
PPM 230825     15:50:28.7 -17:20:56  7.9  0.90  19
PPM 230905     15:53:26.9 -16:46:04  9.3  0.12  20
14GK54         15:53:40.0 -16:52:34 16.6        20
Positions are for J2000

Event circumstances last updated at 2020/03/11 21:19:29 UT

Marc W. Buie, Southwest Research Institute

RECON