RECON: TNO occultation with 14GR53

Event between 14GR53 and star GA0560:09107415 with event index number of 2481892

Geocentric closest approach at 2022/05/02 12:09:03 UTC

J2000 position of star is 16:11:43.8 -33:43:43
Equinox of date position of star is 16:13:09.7 -33:47:05
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 167 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=21.8

TNO is 23.3 AU from the Sun and 22.4 AU from the Earth.
The TNO is moving 21.8 km/sec on the sky relative to the star, or, 4.8 arcsec/hr.
The 1-sigma error in the time of the event is 51 seconds.
The 1-sigma cross-track error in the shadow position is 1822 km.

The TNO has an absolute magnitude Hv=8.1
Diameter=147.2 km assuming a 5% albedo -- 6.8 sec chord
Diameter=60.1 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is CENTAURS
 
 
 
 
 
 
 
 

Star training set for 14GR53, (2022/05/02 12:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:46.8 -26:28:47  0.9  8.24 170
Eta Lup        16:01:36.5 -38:27:30  2.8  5.22 163
PPM 294827     16:15:48.4 -33:03:58  5.9  0.91 167
PPM 294781     16:13:14.7 -33:34:41  8.4  0.21 167
PPM 294777     16:13:00.1 -33:41:12  9.1  0.10 167
14GR53         16:13:10.2 -33:47:06 16.6       167
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, (2022/05/02 12:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  8.24 170
Eta Lup        16:00:07.3 -38:23:48  2.8  5.22 163
PPM 294827     16:14:22.3 -33:00:40  5.9  0.91 167
PPM 294781     16:11:48.3 -33:31:19  8.4  0.21 167
PPM 294777     16:11:33.7 -33:37:49  9.1  0.10 167
14GR53         16:11:43.8 -33:43:43 16.6       167
Positions are for J2000

Event circumstances last updated at 2022/03/14 01:01:48 UT

Marc W. Buie, Southwest Research Institute

RECON