RECON: TNO occultation with 523719

Event between (523719) 14LM28 and star GA1420:05064385 with event index number of 2292475

Geocentric closest approach at 2023/05/04 02:59:53 UTC

J2000 position of star is 18:07:50.3 +53:22:39
Equinox of date position of star is 18:08:20.1 +53:22:55
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 85 degrees from the moon. Moon is 97% illuminated.
Apparent brightness V=22.9

Object is 18.6 AU from the Sun and 18.4 AU from the Earth.
Apparent velocity is 33.6 km/sec on the sky relative to the star, or, 9.1 arcsec/hr.
The 1-sigma error in the time of the event is 110 seconds.
The 1-sigma cross-track error in the shadow position is 2865 km.

The object has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 1.8 sec chord
Diameter=25.8 km assuming a 30% albedo -- 0.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 523719, (2023/05/04 03:00UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:43.7 +38:48:23  0.0 15.42  85
Etamin         17:57:08.9 +51:29:13  2.2  2.55  83
PPM 036587     18:24:18.2 +53:18:52  6.3  2.38  87
PPM 036415     18:11:00.4 +54:17:39  7.0  0.99  86
PPM 036389     18:07:56.7 +53:11:16  9.1  0.20  85
523719         18:08:20.1 +53:22:55 16.8        85
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 523719, (2023/05/04 03:00UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 15.42  85
Etamin         17:56:36.3 +51:29:20  2.2  2.55  83
PPM 036587     18:23:48.1 +53:18:03  6.3  2.38  87
PPM 036415     18:10:31.9 +54:17:17  7.0  0.99  86
PPM 036389     18:07:26.5 +53:11:00  9.1  0.20  85
523719         18:07:50.3 +53:22:39 16.8        85
Positions are for J2000

Event circumstances last updated at 2023/04/20 03:42:26 UT

Marc W. Buie, Southwest Research Institute

RECON