RECON: TNO occultation with 14GS53

Event between 14GS53 and star UC4-447-057706 with event index number of 135472

Geocentric closest approach at 2017/05/30 17:33:42 UTC

J2000 position of star is 14:59:31.9 -00:45:29
Equinox of date position of star is 15:00:25.0 -00:49:32
Stellar brightness R=14.9, use SENSEUP=128
Star is 86 degrees from the moon. Moon is 31% illuminated.
TNO apparent brightness V=21.7

TNO is 34.7 AU from the Sun and 33.9 AU from the Earth.
The TNO is moving 21.7 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 217 seconds.
The 1-sigma cross-track error in the shadow position is 1666 km.

The TNO has an absolute magnitude Hv=6.3
Diameter=320.6 km assuming a 5% albedo -- 15.0 sec chord
Diameter=130.9 km assuming a 30% albedo -- 6.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 14GS53, (2017/05/30 17:34UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:16:27.4 +19:05:33  0.0 22.66  71
27Bet Lib      15:17:56.8 -09:26:46  2.6  9.66  92
PPM 179433     14:58:26.9 -00:14:13  5.5  0.77  85
PPM 179457     15:02:42.5 -00:12:30  7.8  0.84  86
PPM 179442     14:59:49.7 -01:01:01  9.9  0.24  86
14GS53         15:00:25.7 -00:49:35 14.9        86
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 14GS53, (2017/05/30 17:34UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:15:38.4 +19:10:22  0.0 22.66  71
27Bet Lib      15:17:00.3 -09:22:59  2.6  9.66  92
PPM 179433     14:57:33.3 -00:10:04  5.5  0.77  85
PPM 179457     15:01:48.9 -00:08:25  7.8  0.84  86
PPM 179442     14:58:55.9 -00:56:53  9.9  0.24  86
14GS53         14:59:31.9 -00:45:29 14.9        86
Positions are for J2000

Event circumstances last updated at 2017/03/06 17:23:35 UT

Marc W. Buie, Southwest Research Institute

RECON