RECON: TNO occultation with 523726

Event between (523726) 14MJ70 and star GA0680:36651862 with event index number of 2647724

Geocentric closest approach at 2023/08/11 16:30:39 UTC

J2000 position of star is 23:21:08.8 -20:06:45
Equinox of date position of star is 23:22:20.9 -19:59:13
Stellar brightness G=14.1, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 104 degrees from the moon. Moon is 19% illuminated.
TNO apparent brightness V=22.0

TNO is 37.8 AU from the Sun and 36.9 AU from the Earth.
The TNO is moving 20.9 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 94 seconds.
The 1-sigma cross-track error in the shadow position is 1525 km.

The TNO has an absolute magnitude Hv=6.2
Diameter=342.0 km assuming a 5% albedo -- 16.7 sec chord
Diameter=139.6 km assuming a 30% albedo -- 6.8 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 523726, (2023/08/11 16:29UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:57.0 -29:29:48  1.2 10.90 113
98 Aqr         23:24:12.5 -19:58:17  4.0  0.43 104
PPM 274853     23:21:41.1 -19:53:54  8.4  0.19 104
523726         23:22:23.3 -19:58:58 14.1       104
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 523726, (2023/08/11 16:29UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 10.90 113
98 Aqr         23:22:58.1 -20:06:04  4.0  0.43 104
PPM 274853     23:20:26.6 -20:01:41  8.4  0.19 104
523726         23:21:08.8 -20:06:45 14.1       104
Positions are for J2000

Event circumstances last updated at 2022/11/13 03:31:02 UT

Marc W. Buie, Southwest Research Institute

RECON