RECON: TNO occultation with 14GV53

Event between 14GV53 and star GA0840:05546416 with event index number of 1141440

Geocentric closest approach at 2022/04/25 20:06:09 UTC

J2000 position of star is 17:10:48.5 -05:31:08
Equinox of date position of star is 17:11:57.6 -05:32:39
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 81 degrees from the moon. Moon is 25% illuminated.
TNO apparent brightness V=22.1

TNO is 36.6 AU from the Sun and 35.8 AU from the Earth.
The TNO is moving 17.1 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 105 seconds.
The 1-sigma cross-track error in the shadow position is 1587 km.

The TNO has an absolute magnitude Hv=6.4
Diameter=306.2 km assuming a 5% albedo -- 18.1 sec chord
Diameter=125.0 km assuming a 30% albedo -- 7.4 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 14GV53, (2022/04/25 20:05UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:46.8 -26:28:47  0.9 23.13  85
13Zet Oph      16:38:23.4 -10:36:38  2.6  9.74  87
PPM 200511     17:17:54.6 -06:16:05  6.0  1.64  79
PPM 200428     17:12:54.3 -04:39:58  8.0  0.91  81
PPM 200413     17:12:08.2 -05:33:19  9.0  0.04  80
14GV53         17:12:00.0 -05:32:42 16.7        80
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 14GV53, (2022/04/25 20:05UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 23.13  85
13Zet Oph      16:37:09.6 -10:34:01  2.6  9.74  87
PPM 200511     17:16:42.8 -06:14:42  6.0  1.64  79
PPM 200428     17:11:43.3 -04:38:26  8.0  0.91  81
PPM 200413     17:10:56.7 -05:31:45  9.0  0.04  80
14GV53         17:10:48.5 -05:31:08 16.7        81
Positions are for J2000

Event circumstances last updated at 2021/07/25 00:50:54 UT

Marc W. Buie, Southwest Research Institute

RECON