RECON: TNO occultation with 14GJ54

Event between 14GJ54 and star UC4-359-071319 with event index number of 135322

Geocentric closest approach at 2017/06/07 03:19:56 UTC

J2000 position of star is 15:26:24.5 -18:15:28
Equinox of date position of star is 15:27:21.6 -18:18:55
Stellar brightness R=14.3
Star is 6 degrees from the moon. Moon is 95% illuminated.
TNO apparent brightness V=22.2

TNO is 29.9 AU from the Sun and 28.9 AU from the Earth.
The TNO is moving 21.5 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 770 seconds.
The 1-sigma cross-track error in the shadow position is 3846 km.

The TNO has an absolute magnitude Hv=7.4
Diameter=198.6 km assuming a 5% albedo -- 9.2 sec chord
Diameter=81.1 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 
 
 

Star training set for 14GJ54, (2017/06/07 03:20UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:28.7 -26:28:09  0.9 16.68  22
7Del Sco       16:01:22.0 -22:40:12  2.3  9.06  14
28 Lib         15:21:53.2 -18:13:15  6.4  1.31   5
PPM 230293     15:29:43.1 -18:46:58  8.3  0.72   6
PPM 230238     15:27:06.7 -18:24:10  9.6  0.11   6
14GJ54         15:27:24.2 -18:19:04 14.3         6
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 14GJ54, (2017/06/07 03:20UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9 16.68  22
7Del Sco       16:00:20.0 -22:37:18  2.3  9.06  14
28 Lib         15:20:53.7 -18:09:32  6.4  1.31   5
PPM 230293     15:28:43.2 -18:43:25  8.3  0.72   6
PPM 230238     15:26:07.1 -18:20:34  9.6  0.11   6
14GJ54         15:26:24.5 -18:15:28 14.3         6
Positions are for J2000

Event circumstances last updated at 2016/09/02 18:13:54 UT

Marc W. Buie, Southwest Research Institute

RECON