RECON: TNO occultation with 523713

Event between (523713) 14JX80 and star GA0940:06890284 with event index number of 2377928

Geocentric closest approach at 2028/06/12 01:39:41 UTC

J2000 position of star is 18:19:45.0 +05:48:20
Equinox of date position of star is 18:20:54.5 +05:49:02
Stellar brightness G=13.9, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 48 degrees from the moon. Moon is 78% illuminated.
Apparent brightness V=21.9

Object is 37.1 AU from the Sun and 36.3 AU from the Earth.
Apparent velocity is 23.2 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 121 seconds.
The 1-sigma cross-track error in the shadow position is 1360 km.

The object has an absolute magnitude Hv=6.2
Diameter=340.4 km assuming a 5% albedo -- 15.2 sec chord
Diameter=139.0 km assuming a 30% albedo -- 6.2 sec chord
Dynamical classification is 5:2EEE+5:2EII
 
 
 
 
 
 
 
 

Star training set for 523713, (2028/06/12 01:41UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:54.0 +38:48:40  0.0 33.21  64
60Bet Oph      17:44:52.8 +04:33:26  2.8  9.12  56
PPM 165790     18:27:00.9 +08:03:00  5.6  2.66  48
PPM 165539     18:18:38.0 +05:45:57  7.2  0.63  49
PPM 165646     18:22:19.6 +05:56:31  9.4  0.32  48
PPM 165634     18:21:54.8 +05:45:50 10.7  0.20  48
523713         18:21:08.7 +05:49:10 13.9        48
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, (2028/06/12 01:41UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 33.21  64
60Bet Oph      17:43:28.3 +04:34:06  2.8  9.12  56
PPM 165790     18:25:38.8 +08:01:55  5.6  2.66  48
PPM 165539     18:17:14.3 +05:45:13  7.2  0.63  49
PPM 165646     18:20:56.0 +05:55:37  9.4  0.32  48
PPM 165634     18:20:31.1 +05:44:58 10.7  0.20  48
523713         18:19:45.0 +05:48:20 13.9        48
Positions are for J2000

Event circumstances last updated at 2023/08/24 02:50:40 UT

Marc W. Buie, Southwest Research Institute

RECON