RECON: TNO occultation with 14GR53

Event between 14GR53 and star UC4-361-071446 with event index number of 193188

Geocentric closest approach at 2018/01/18 09:05:02 UTC

J2000 position of star is 15:26:34.8 -17:51:19
Equinox of date position of star is 15:27:36.0 -17:55:02
Stellar brightness R=15.9, use SENSEUP=128
Star is 78 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.0

TNO is 22.6 AU from the Sun and 23.0 AU from the Earth.
The TNO is moving 20.4 km/sec on the sky relative to the star, or, 4.4 arcsec/hr.
The 1-sigma error in the time of the event is 57 seconds.
The 1-sigma cross-track error in the shadow position is 1430 km.

The TNO has an absolute magnitude Hv=8.2
Diameter=138.0 km assuming a 5% albedo -- 6.8 sec chord
Diameter=56.4 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is CENTAURS
 
 
 
 
 
 
 
 

Star training set for 14GR53, (2018/01/18 09:05UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:31.0 -26:28:14  0.9 16.86  63
27Bet Lib      15:17:58.8 -09:26:54  2.6  8.79  83
32Zet1Lib      15:29:16.7 -16:46:42  5.6  1.21  78
PPM 230220     15:26:27.1 -17:09:24  8.4  0.81  79
PPM 230256     15:27:48.6 -18:03:40  9.4  0.15  78
14GR53         15:27:36.4 -17:55:03 15.9        78
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 14GR53, (2018/01/18 09:05UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 16.86  63
27Bet Lib      15:17:00.3 -09:22:59  2.6  8.79  83
32Zet1Lib      15:28:15.4 -16:43:00  5.6  1.21  78
PPM 230220     15:25:25.8 -17:05:39  8.4  0.81  79
PPM 230256     15:26:46.9 -17:59:57  9.4  0.15  78
14GR53         15:26:34.8 -17:51:19 15.9        78
Positions are for J2000

Event circumstances last updated at 2017/12/02 17:11:47 UT

Marc W. Buie, Southwest Research Institute

RECON