RECON: TNO occultation with 523682

Event between (523682) 14CN23 and star GA0520:15442962 with event index number of 2649156

Geocentric closest approach at 2024/07/01 03:41:53 UTC

J2000 position of star is 17:04:18.5 -37:40:09
Equinox of date position of star is 17:05:58.2 -37:42:05
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 139 degrees from the moon. Moon is 26% illuminated.
Apparent brightness V=21.2

Object is 16.6 AU from the Sun and 15.7 AU from the Earth.
Apparent velocity is 20.7 km/sec on the sky relative to the star, or, 6.5 arcsec/hr.
The 1-sigma error in the time of the event is 247 seconds.
The 1-sigma cross-track error in the shadow position is 1643 km.

The object has an absolute magnitude Hv=8.9
Diameter=104.7 km assuming a 5% albedo -- 4.9 sec chord
Diameter=42.8 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 523682, (2024/07/01 03:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.8 -26:29:03  0.9 13.44 149
26Eps Sco      16:51:45.4 -34:20:07  2.3  4.43 143
PPM 295902     17:07:59.8 -37:15:32  6.3  0.60 139
PPM 295830     17:04:40.3 -37:45:11  7.8  0.26 139
PPM 295854     17:05:49.3 -37:48:00  9.0  0.10 139
523682         17:05:58.4 -37:42:05 16.7       139
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, (2024/07/01 03:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 13.44 149
26Eps Sco      16:50:08.7 -34:17:41  2.3  4.43 143
PPM 295902     17:06:20.2 -37:13:40  6.3  0.60 139
PPM 295830     17:03:00.4 -37:43:12  7.8  0.26 139
PPM 295854     17:04:09.4 -37:46:03  9.0  0.10 139
523682         17:04:18.5 -37:40:09 16.7       139
Positions are for J2000

Event circumstances last updated at 2024/06/11 03:47:18 UT

Marc W. Buie, Southwest Research Institute

RECON