RECON: TNO occultation with 47932

Event between (47932) 00GN171 and star UC4-313-086768 with event index number of 110284

Geocentric closest approach at 2018/03/19 09:12:20 UTC

J2000 position of star is 16:04:32.9 -27:30:00
Equinox of date position of star is 16:05:34.7 -27:32:42
Stellar brightness R=16.3
Star is 135 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=20.9

TNO is 28.7 AU from the Sun and 28.3 AU from the Earth.
The TNO is moving 6.9 km/sec on the sky relative to the star, or, 1.2 arcsec/hr.
The 1-sigma error in the time of the event is 265 seconds.
The 1-sigma cross-track error in the shadow position is 1418 km.

The TNO has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 50.3 sec chord
Diameter=141.6 km assuming a 30% albedo -- 20.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 47932, (2018/03/19 09:12UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:31.6 -26:28:15  0.9  5.64 130
7Del Sco       16:01:24.8 -22:40:20  2.3  4.97 138
PPM 265162     16:09:14.4 -26:22:27  4.8  1.42 135
PPM 265161     16:09:14.5 -27:46:40  7.4  0.82 134
PPM 265073     16:05:28.1 -27:39:40 10.0  0.12 135
47932          16:05:40.0 -27:32:56 16.3       135
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 47932, (2018/03/19 09:12UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9  5.64 130
7Del Sco       16:00:20.0 -22:37:18  2.3  4.97 138
PPM 265162     16:08:07.7 -26:19:36  4.8  1.42 135
PPM 265161     16:08:07.2 -27:43:49  7.4  0.82 134
PPM 265073     16:04:20.9 -27:36:45 10.0  0.12 135
47932          16:04:32.9 -27:30:00 16.3       135
Positions are for J2000

Event circumstances last updated at 2016/10/09 17:26:35 UT

Marc W. Buie, Southwest Research Institute

RECON