RECON: TNO occultation with 47932

Event between (47932) 00GN171 and star GA0560:36099235 with event index number of 2721069

Geocentric closest approach at 2029/02/22 00:44:33 UTC

J2000 position of star is 18:07:10.1 -33:00:43
Equinox of date position of star is 18:08:46.6 -33:00:26
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 156 degrees from the moon. Moon is 54% illuminated.
Apparent brightness V=21.4

Object is 30.6 AU from the Sun and 31.0 AU from the Earth.
Apparent velocity is 21.0 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 477 seconds.
The 1-sigma cross-track error in the shadow position is 2731 km.

The object has an absolute magnitude Hv=6.3
Diameter=346.7 km assuming a 5% albedo -- 15.9 sec chord
Diameter=141.6 km assuming a 30% albedo -- 6.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 47932, (2029/02/22 00:45UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:12.0 -26:29:38  0.9 22.16 178
Kap Sco        17:44:30.4 -39:02:31  2.4  7.81 158
PPM 297329     18:11:54.6 -32:42:46  6.5  0.66 155
PPM 297285     18:09:56.3 -32:53:14  8.1  0.22 156
47932          18:09:05.0 -33:00:22 16.4       155
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, (2029/02/22 00:45UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 22.16 178
Kap Sco        17:42:29.3 -39:01:49  2.4  7.81 158
PPM 297329     18:10:00.0 -32:43:14  6.5  0.66 155
PPM 297285     18:08:01.5 -32:53:37  8.1  0.22 156
47932          18:07:10.1 -33:00:43 16.4       156
Positions are for J2000

Event circumstances last updated at 2024/06/26 21:31:20 UT

Marc W. Buie, Southwest Research Institute

RECON