RECON: TNO occultation with 14FB72

Event between 14FB72 and star GA0680:07638140 with event index number of 2472848

Geocentric closest approach at 2023/05/24 18:11:58 UTC

J2000 position of star is 16:48:35.3 -20:00:14
Equinox of date position of star is 16:49:55.8 -20:02:33
Stellar brightness G=13.6, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 131 degrees from the moon. Moon is 24% illuminated.
TNO apparent brightness V=21.6

TNO is 20.2 AU from the Sun and 19.2 AU from the Earth.
The TNO is moving 22.6 km/sec on the sky relative to the star, or, 5.8 arcsec/hr.
The 1-sigma error in the time of the event is 43 seconds.
The 1-sigma cross-track error in the shadow position is 711 km.

The TNO has an absolute magnitude Hv=8.6
Diameter=117.5 km assuming a 5% albedo -- 5.2 sec chord
Diameter=48.0 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 14FB72, (2023/05/24 18:12UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:50.7 -26:28:55  0.9  7.79 128
35Eta Oph      17:11:43.3 -15:45:08  2.6  6.72 135
PPM 266088     16:54:48.3 -20:27:10  5.7  1.21 132
PPM 265991     16:50:10.2 -20:06:23  8.5  0.08 131
14FB72         16:49:58.1 -20:02:37 13.6       131
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 14FB72, (2023/05/24 18:12UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  7.79 128
35Eta Oph      17:10:22.7 -15:43:29  2.6  6.72 135
PPM 266088     16:53:25.2 -20:24:57  5.7  1.21 132
PPM 265991     16:48:47.3 -20:04:01  8.5  0.08 131
14FB72         16:48:35.3 -20:00:14 13.6       131
Positions are for J2000

Event circumstances last updated at 2022/09/29 04:23:50 UT

Marc W. Buie, Southwest Research Institute

RECON