RECON: TNO occultation with 523734

Event between (523734) 14QV441 and star GA0820:00277221 with event index number of 2372936

Geocentric closest approach at 2022/10/18 00:18:56 UTC

J2000 position of star is 03:33:11.9 -07:41:15
Equinox of date position of star is 03:34:16.0 -07:36:53
Stellar brightness G=14.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 74 degrees from the moon. Moon is 47% illuminated.
TNO apparent brightness V=21.7

TNO is 19.0 AU from the Sun and 18.2 AU from the Earth.
The TNO is moving 20.5 km/sec on the sky relative to the star, or, 5.6 arcsec/hr.
The 1-sigma error in the time of the event is 52 seconds.
The 1-sigma cross-track error in the shadow position is 799 km.

The TNO has an absolute magnitude Hv=8.8
Diameter=106.7 km assuming a 5% albedo -- 5.2 sec chord
Diameter=43.5 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 523734, (2022/10/18 00:19UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:38.1 -08:10:37  0.1 25.09  53
Menkar         03:03:28.4 +04:10:40  2.5 14.08  75
PPM 185842     03:30:46.2 -06:43:40  6.2  1.25  74
PPM 185889     03:33:09.4 -07:45:51  8.1  0.32  74
PPM 185918     03:34:45.0 -07:30:33  9.5  0.15  73
523734         03:34:18.7 -07:36:42 14.4        73
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 523734, (2022/10/18 00:19UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1 25.09  53
Menkar         03:02:16.8 +04:05:21  2.5 14.08  75
PPM 185842     03:29:39.0 -06:48:18  6.2  1.25  74
PPM 185889     03:32:02.6 -07:50:25  8.1  0.32  74
PPM 185918     03:33:38.1 -07:35:05  9.5  0.15  73
523734         03:33:11.9 -07:41:15 14.4        74
Positions are for J2000

Event circumstances last updated at 2021/11/15 00:49:15 UT

Marc W. Buie, Southwest Research Institute

RECON