RECON: TNO occultation with 14OV393

Event between 14OV393 and star GA0740:29275491 with event index number of 1801582

Geocentric closest approach at 2021/05/09 07:16:33 UTC

J2000 position of star is 22:11:40.7 -14:54:57
Equinox of date position of star is 22:12:49.5 -14:48:37
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 52 degrees from the moon. Moon is 6% illuminated.
TNO apparent brightness V=22.7

TNO is 43.1 AU from the Sun and 43.3 AU from the Earth.
The TNO is moving 10.5 km/sec on the sky relative to the star, or, 1.2 arcsec/hr.
The 1-sigma error in the time of the event is 273 seconds.
The 1-sigma cross-track error in the shadow position is 1809 km.

The TNO has an absolute magnitude Hv=6.2
Diameter=350.0 km assuming a 5% albedo -- 33.4 sec chord
Diameter=142.9 km assuming a 30% albedo -- 13.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 14OV393, (2021/05/09 07:17UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:49.6 -29:30:31  1.2 18.12  50
PPM 239990     22:15:47.4 -15:42:50  6.5  1.15  52
PPM 239989     22:15:46.2 -14:59:44  7.6  0.73  52
PPM 239930     22:13:33.5 -14:35:58  9.9  0.27  52
14OV393        22:12:49.8 -14:48:36 16.1        52
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 14OV393, (2021/05/09 07:17UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 18.12  50
PPM 239990     22:14:38.2 -15:49:14  6.5  1.15  52
PPM 239989     22:14:37.2 -15:06:08  7.6  0.73  52
PPM 239930     22:12:24.4 -14:42:20  9.9  0.27  52
14OV393        22:11:40.7 -14:54:57 16.1        52
Positions are for J2000

Event circumstances last updated at 2021/04/05 23:46:12 UT

Marc W. Buie, Southwest Research Institute

RECON