RECON: TNO occultation with 14GT53

Event between 14GT53 and star UC4-350-072751 with event index number of 135505

Geocentric closest approach at 2017/06/28 01:08:51 UTC

J2000 position of star is 14:55:58.7 -20:02:21
Equinox of date position of star is 14:56:57.8 -20:06:30
Stellar brightness R=14.9, use SENSEUP=128
Star is 77 degrees from the moon. Moon is 20% illuminated.
TNO apparent brightness V=22.2

TNO is 45.7 AU from the Sun and 45.1 AU from the Earth.
The TNO is moving 15.0 km/sec on the sky relative to the star, or, 1.6 arcsec/hr.
The 1-sigma error in the time of the event is 375 seconds.
The 1-sigma cross-track error in the shadow position is 5585 km.

The TNO has an absolute magnitude Hv=5.5
Diameter=485.3 km assuming a 5% albedo -- 32.4 sec chord
Diameter=198.1 km assuming a 30% albedo -- 13.2 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 14GT53, (2017/06/28 01:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:28.9 -26:28:10  0.9 22.36 100
27Bet Lib      15:17:57.0 -09:26:47  2.6 11.80  79
PPM 229408     14:52:50.4 -18:25:35  6.2  1.95  76
PPM 263559     14:56:05.4 -20:05:02  7.7  0.21  77
PPM 263568     14:56:37.2 -20:12:27  9.3  0.13  77
14GT53         14:56:58.4 -20:06:33 14.9        77
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 14GT53, (2017/06/28 01:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9 22.36 100
27Bet Lib      15:17:00.3 -09:22:59  2.6 11.80  79
PPM 229408     14:51:51.3 -18:21:19  6.2  1.95  76
PPM 263559     14:55:05.7 -20:00:49  7.7  0.21  77
PPM 263568     14:55:37.4 -20:08:15  9.3  0.13  77
14GT53         14:55:58.7 -20:02:21 14.9        77
Positions are for J2000

Event circumstances last updated at 2017/04/24 16:09:02 UT

Marc W. Buie, Southwest Research Institute

RECON