RECON: TNO occultation with 578832

Event between (578832) 14GP53 and star GA0720:16653713 with event index number of 2783054

Geocentric closest approach at 2029/06/17 01:05:36 UTC

J2000 position of star is 17:47:37.7 -17:38:26
Equinox of date position of star is 17:48:55.3 -17:38:49
Stellar brightness G=14.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 122 degrees from the moon. Moon is 25% illuminated.
TNO apparent brightness V=22.6

TNO is 23.8 AU from the Sun and 22.8 AU from the Earth.
The TNO is moving 23.2 km/sec on the sky relative to the star, or, 5.1 arcsec/hr.
The 1-sigma error in the time of the event is 350 seconds.
The 1-sigma cross-track error in the shadow position is 2263 km.

The TNO has an absolute magnitude Hv=8.9
Diameter=98.2 km assuming a 5% albedo -- 4.2 sec chord
Diameter=40.1 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 578832, (2029/06/17 01:06UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:13.1 -26:29:41  0.9 20.11 104
35Eta Oph      17:12:04.2 -15:45:33  2.6  9.12 113
PPM 233754     17:57:39.0 -18:48:16  6.5  2.29 124
PPM 233593     17:49:10.5 -18:06:55  7.7  0.47 122
PPM 233618     17:50:24.4 -17:28:54  9.9  0.30 122
578832         17:49:20.8 -17:38:56 14.4       122
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 578832, (2029/06/17 01:06UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.11 104
35Eta Oph      17:10:22.7 -15:43:29  2.6  9.12 113
PPM 233754     17:55:55.0 -18:48:08  6.5  2.29 124
PPM 233593     17:47:27.1 -18:06:25  7.7  0.47 122
PPM 233618     17:48:41.4 -17:28:27  9.9  0.30 122
578832         17:47:37.7 -17:38:26 14.4       122
Positions are for J2000

Event circumstances last updated at 2022/03/07 02:38:00 UT

Marc W. Buie, Southwest Research Institute

RECON