RECON: TNO occultation with 523713

Event between (523713) 14JX80 and star GA0940:06502089 with event index number of 2377983

Geocentric closest approach at 2028/09/14 22:21:22 UTC

J2000 position of star is 18:14:04.5 +05:13:23
Equinox of date position of star is 18:15:14.3 +05:13:54
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 143 degrees from the moon. Moon is 20% illuminated.
Apparent brightness V=22.1

Object is 37.2 AU from the Sun and 37.0 AU from the Earth.
Apparent velocity is 13.4 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 103 seconds.
The 1-sigma cross-track error in the shadow position is 2555 km.

The object has an absolute magnitude Hv=6.2
Diameter=340.4 km assuming a 5% albedo -- 26.3 sec chord
Diameter=139.0 km assuming a 30% albedo -- 10.7 sec chord
Dynamical classification is 5:2EEE+5:2EII
 
 
 
 
 
 
 
 

Star training set for 523713, (2028/09/14 22:22UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:54.6 +38:48:41  0.0 33.96 118
60Bet Oph      17:44:53.5 +04:33:26  2.8  7.65 138
73 Oph         18:10:59.6 +04:00:02  6.0  1.67 143
PPM 165339     18:12:32.4 +05:40:04  8.0  0.85 142
PPM 165385     18:13:57.1 +05:28:28  9.7  0.45 143
PPM 165429     18:15:25.8 +05:18:49 11.4  0.08 143
523713         18:15:29.2 +05:14:00 16.7       143
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 523713, (2028/09/14 22:22UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 33.96 118
60Bet Oph      17:43:28.3 +04:34:06  2.8  7.65 138
73 Oph         18:09:34.0 +03:59:36  6.0  1.67 143
PPM 165339     18:11:07.9 +05:39:35  8.0  0.85 142
PPM 165385     18:12:32.5 +05:27:55  9.7  0.45 143
PPM 165429     18:14:01.0 +05:18:12 11.4  0.08 143
523713         18:14:04.5 +05:13:23 16.7       143
Positions are for J2000

Event circumstances last updated at 2023/08/26 02:51:45 UT

Marc W. Buie, Southwest Research Institute

RECON