RECON: TNO occultation with 523682

Event between (523682) 14CN23 and star GA0500:31010097 with event index number of 2652948

Geocentric closest approach at 2027/06/03 04:42:25 UTC

J2000 position of star is 18:39:43.4 -38:06:14
Equinox of date position of star is 18:41:23.9 -38:04:48
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 132 degrees from the moon. Moon is 4% illuminated.
Apparent brightness V=20.8

Object is 15.2 AU from the Sun and 14.3 AU from the Earth.
Apparent velocity is 19.0 km/sec on the sky relative to the star, or, 6.6 arcsec/hr.
The 1-sigma error in the time of the event is 603 seconds.
The 1-sigma cross-track error in the shadow position is 2100 km.

The object has an absolute magnitude Hv=8.9
Diameter=104.7 km assuming a 5% albedo -- 5.3 sec chord
Diameter=42.8 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 523682, (2027/06/03 04:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:05.6 -26:29:25  0.9 29.72 161
38Zet Sgr      19:04:21.2 -29:50:18  2.7  9.49 127
Lam CrA        18:45:39.6 -38:17:40  5.2  0.83 131
PPM 297981     18:41:17.0 -37:59:11  8.5  0.11 132
PPM 297998     18:41:59.8 -38:00:35 10.3  0.10 132
523682         18:41:36.0 -38:04:37 15.7       132
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, (2027/06/03 04:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 29.72 161
38Zet Sgr      19:02:36.7 -29:52:49  2.7  9.49 127
Lam CrA        18:43:46.9 -38:19:26  5.2  0.83 131
PPM 297981     18:39:24.5 -38:00:47  8.5  0.11 132
PPM 297998     18:40:07.3 -38:02:13 10.3  0.10 132
523682         18:39:43.4 -38:06:14 15.7       132
Positions are for J2000

Event circumstances last updated at 2024/06/21 21:28:34 UT

Marc W. Buie, Southwest Research Institute

RECON