RECON: TNO occultation with 14GR53

Event between 14GR53 and star GA0540:10112790 with event index number of 2482083

Geocentric closest approach at 2023/02/07 02:08:18 UTC

J2000 position of star is 16:28:06.8 -35:46:47
Equinox of date position of star is 16:29:38.0 -35:49:45
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 99 degrees from the moon. Moon is 98% illuminated.
Apparent brightness V=22.1

Object is 23.5 AU from the Sun and 23.9 AU from the Earth.
Apparent velocity is 22.0 km/sec on the sky relative to the star, or, 4.6 arcsec/hr.
The 1-sigma error in the time of the event is 79 seconds.
The 1-sigma cross-track error in the shadow position is 1960 km.

The object has an absolute magnitude Hv=8.1
Diameter=147.2 km assuming a 5% albedo -- 6.7 sec chord
Diameter=60.1 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is CENTAURS
 
 
 
 
 
 
 
 

Star training set for 14GR53, (2023/02/07 02:08UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:49.7 -26:28:53  0.9  9.35  98
26Eps Sco      16:51:39.9 -34:19:59  2.3  4.75 104
PPM 295143     16:32:53.8 -34:45:09  4.2  1.27 100
PPM 295095     16:30:17.7 -35:44:22  7.8  0.16  99
PPM 295080     16:29:23.9 -35:50:01  9.4  0.05  99
14GR53         16:29:38.3 -35:49:46 15.0       100
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 14GR53, (2023/02/07 02:08UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  9.35  98
26Eps Sco      16:50:08.7 -34:17:41  2.3  4.75 104
PPM 295143     16:31:22.9 -34:42:16  4.2  1.27 100
PPM 295095     16:28:46.2 -35:41:24  7.8  0.16  99
PPM 295080     16:27:52.3 -35:47:01  9.4  0.05  99
14GR53         16:28:06.8 -35:46:47 15.0        99
Positions are for J2000

Event circumstances last updated at 2023/01/08 03:30:05 UT

Marc W. Buie, Southwest Research Institute

RECON