RECON: TNO occultation with 47932

Event between (47932) 00GN171 and star GA0580:14626219 with event index number of 2313836

Geocentric closest approach at 2023/03/03 05:16:58 UTC

J2000 position of star is 17:01:12.8 -31:00:33
Equinox of date position of star is 17:02:41.5 -31:02:29
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 142 degrees from the moon. Moon is 84% illuminated.
Apparent brightness V=21.2

Object is 29.4 AU from the Sun and 29.5 AU from the Earth.
Apparent velocity is 10.5 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 339 seconds.
The 1-sigma cross-track error in the shadow position is 3042 km.

The object has an absolute magnitude Hv=6.3
Diameter=346.7 km assuming a 5% albedo -- 32.0 sec chord
Diameter=141.6 km assuming a 30% albedo -- 13.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 47932, (2023/03/03 05:17UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:49.9 -26:28:53  0.9  8.34 135
26Eps Sco      16:51:40.2 -34:19:59  2.3  4.03 140
PPM 295807     17:03:22.7 -32:10:33  5.0  1.14 143
PPM 295835     17:04:47.7 -31:38:45  7.2  0.75 143
PPM 295809     17:03:28.4 -31:10:54 10.0  0.22 143
47932          17:02:42.1 -31:02:30 16.3       143
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, (2023/03/03 05:17UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  8.34 135
26Eps Sco      16:50:08.8 -34:17:41  2.3  4.03 140
PPM 295807     17:01:52.6 -32:08:38  5.0  1.14 143
PPM 295835     17:03:18.0 -31:36:53  7.2  0.75 143
PPM 295809     17:01:59.0 -31:08:59 10.0  0.22 143
47932          17:01:12.8 -31:00:33 16.3       142
Positions are for J2000

Event circumstances last updated at 2023/01/09 03:34:05 UT

Marc W. Buie, Southwest Research Institute

RECON