RECON: TNO occultation with 14GV53

Event between 14GV53 and star UC4-430-065104 with event index number of 135625

Geocentric closest approach at 2018/04/17 01:53:59 UTC

J2000 position of star is 16:41:53.9 -04:08:57
Equinox of date position of star is 16:42:49.6 -04:10:55
Stellar brightness R=14.5, use SENSEUP=128
Star is 148 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.1

TNO is 36.9 AU from the Sun and 36.2 AU from the Earth.
The TNO is moving 17.0 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 344 seconds.
The 1-sigma cross-track error in the shadow position is 2699 km.

The TNO has an absolute magnitude Hv=6.3
Diameter=325.1 km assuming a 5% albedo -- 19.1 sec chord
Diameter=132.7 km assuming a 30% albedo -- 7.8 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 14GV53, (2018/04/17 01:54UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:31.9 -26:28:16  0.9 22.48 149
13Zet Oph      16:38:10.1 -10:36:10  2.6  6.52 150
12 Oph         16:37:19.2 -02:21:44  5.8  2.29 149
PPM 199904     16:42:20.5 -04:14:55  8.4  0.15 148
14GV53         16:42:51.8 -04:10:59 14.5       148
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 14GV53, (2018/04/17 01:54UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 22.48 149
13Zet Oph      16:37:09.6 -10:34:01  2.6  6.52 150
12 Oph         16:36:22.0 -02:19:34  5.8  2.29 149
PPM 199904     16:41:22.5 -04:12:52  8.4  0.15 148
14GV53         16:41:53.9 -04:08:57 14.5       148
Positions are for J2000

Event circumstances last updated at 2017/08/01 16:36:48 UT

Marc W. Buie, Southwest Research Institute

RECON