RECON: TNO occultation with 47932

Event between (47932) 00GN171 and star GA0560:26327221 with event index number of 2317111

Geocentric closest approach at 2028/05/27 13:52:56 UTC

J2000 position of star is 17:54:38.8 -33:18:53
Equinox of date position of star is 17:56:15.6 -33:19:03
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 159 degrees from the moon. Moon is 12% illuminated.
Apparent brightness V=21.2

Object is 30.4 AU from the Sun and 29.5 AU from the Earth.
Apparent velocity is 21.3 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 421 seconds.
The 1-sigma cross-track error in the shadow position is 1437 km.

The object has an absolute magnitude Hv=6.3
Diameter=346.7 km assuming a 5% albedo -- 15.7 sec chord
Diameter=141.6 km assuming a 30% albedo -- 6.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 47932, (2028/05/27 13:53UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.2 -26:29:33  0.9 19.67 142
Kap Sco        17:44:27.3 -39:02:30  2.4  6.22 154
PPM 296936     17:54:42.3 -34:07:09  5.8  0.89 158
PPM 296977     17:56:16.5 -33:37:22  8.4  0.31 159
PPM 296990     17:56:46.7 -33:11:56  9.2  0.13 159
47932          17:56:31.1 -33:19:04 16.5       159
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, (2028/05/27 13:53UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 19.67 142
Kap Sco        17:42:29.3 -39:01:49  2.4  6.22 154
PPM 296936     17:52:49.2 -34:06:53  5.8  0.89 158
PPM 296977     17:54:23.9 -33:37:11  8.4  0.31 159
PPM 296990     17:54:54.6 -33:11:45  9.2  0.13 159
47932          17:54:38.8 -33:18:53 16.5       159
Positions are for J2000

Event circumstances last updated at 2024/06/24 21:29:23 UT

Marc W. Buie, Southwest Research Institute

RECON