RECON: TNO occultation with 523693

Event between (523693) 14FT71 and star GA0620:06364375 with event index number of 2384192

Geocentric closest approach at 2026/05/08 21:39:00 UTC

J2000 position of star is 13:02:34.7 -27:11:25
Equinox of date position of star is 13:03:54.6 -27:19:17
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 101 degrees from the moon. Moon is 60% illuminated.
Apparent brightness V=21.6

Object is 46.8 AU from the Sun and 45.9 AU from the Earth.
Apparent velocity is 23.6 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 127 seconds.
The 1-sigma cross-track error in the shadow position is 3011 km.

The object has an absolute magnitude Hv=4.9
Diameter=602.6 km assuming a 5% albedo -- 26.9 sec chord
Diameter=246.0 km assuming a 30% albedo -- 11.0 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 523693, (2026/05/08 21:38UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:35.1 -11:17:53  1.0 16.89 103
9Bet Crv       12:35:46.6 -23:32:31  2.6  7.41 108
PPM 261317     13:13:05.6 -26:41:28  6.5  2.12  99
PPM 261117     13:02:51.4 -27:31:02  8.2  0.32 101
PPM 261136     13:04:09.1 -27:09:06  8.6  0.18 101
523693         13:04:00.7 -27:19:53 16.3       100
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 523693, (2026/05/08 21:38UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 16.89 103
9Bet Crv       12:34:23.2 -23:23:50  2.6  7.41 108
PPM 261317     13:11:39.1 -26:33:06  6.5  2.12  99
PPM 261117     13:01:25.5 -27:22:33  8.2  0.32 101
PPM 261136     13:02:43.2 -27:00:38  8.6  0.18 101
523693         13:02:34.7 -27:11:25 16.3       101
Positions are for J2000

Event circumstances last updated at 2024/06/18 21:26:38 UT

Marc W. Buie, Southwest Research Institute

RECON