RECON: TNO occultation with 523682

Event between (523682) 14CN23 and star GA0520:11445744 with event index number of 2648608

Geocentric closest approach at 2023/07/17 10:24:38 UTC

J2000 position of star is 16:36:28.7 -36:32:27
Equinox of date position of star is 16:38:01.9 -36:35:12
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 141 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=21.4

Object is 17.1 AU from the Sun and 16.3 AU from the Earth.
Apparent velocity is 15.9 km/sec on the sky relative to the star, or, 4.8 arcsec/hr.
The 1-sigma error in the time of the event is 225 seconds.
The 1-sigma cross-track error in the shadow position is 1785 km.

The object has an absolute magnitude Hv=8.9
Diameter=104.7 km assuming a 5% albedo -- 6.3 sec chord
Diameter=42.8 km assuming a 30% albedo -- 2.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 523682, (2023/07/17 10:25UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.3 -26:28:56  0.9 10.22 139
26Eps Sco      16:51:41.6 -34:20:01  2.3  3.58 144
PPM 295311     16:40:40.1 -37:15:45  6.3  0.85 142
PPM 295211     16:36:40.5 -36:06:38  8.5  0.55 141
PPM 295264     16:38:45.6 -36:54:25  9.3  0.35 142
523682         16:38:02.9 -36:35:14 16.9       142
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 523682, (2023/07/17 10:25UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 10.22 139
26Eps Sco      16:50:08.7 -34:17:41  2.3  3.58 144
PPM 295311     16:39:05.2 -37:13:03  6.3  0.85 142
PPM 295211     16:35:06.7 -36:03:49  8.5  0.55 141
PPM 295264     16:37:11.1 -36:51:40  9.3  0.35 142
523682         16:36:28.7 -36:32:27 16.9       141
Positions are for J2000

Event circumstances last updated at 2023/04/20 03:44:14 UT

Marc W. Buie, Southwest Research Institute

RECON