RECON: TNO occultation with 523675

Event between (523675) 13PV74 and star GA0800:21814192 with event index number of 2625402

Geocentric closest approach at 2024/07/16 06:03:40 UTC

J2000 position of star is 23:01:24.4 -08:33:46
Equinox of date position of star is 23:02:38.8 -08:26:04
Stellar brightness G=12.1, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 113 degrees from the moon. Moon is 72% illuminated.
Apparent brightness V=22.0

Object is 42.0 AU from the Sun and 41.3 AU from the Earth.
Apparent velocity is 14.3 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 151 seconds.
The 1-sigma cross-track error in the shadow position is 1673 km.

The object has an absolute magnitude Hv=5.7
Diameter=436.5 km assuming a 5% albedo -- 30.9 sec chord
Diameter=178.2 km assuming a 30% albedo -- 12.6 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 523675, (2024/07/16 06:06UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:59:00.0 -29:29:30  1.2 21.08 102
81 Aqr         23:02:40.1 -06:55:44  6.1  1.50 114
PPM 207028     23:01:36.8 -08:44:55  7.1  0.41 113
PPM 207067     23:03:35.5 -08:33:21  9.7  0.26 113
523675         23:02:41.1 -08:25:50 12.1       113
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 523675, (2024/07/16 06:06UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 21.08 102
81 Aqr         23:01:23.6 -07:03:40  6.1  1.50 114
PPM 207028     23:00:20.0 -08:52:50  7.1  0.41 113
PPM 207067     23:02:18.8 -08:41:18  9.7  0.26 113
523675         23:01:24.4 -08:33:46 12.1       113
Positions are for J2000

Event circumstances last updated at 2023/10/24 02:30:35 UT

Marc W. Buie, Southwest Research Institute

RECON