RECON: TNO occultation with 578993

Event between (578993) 14JP80 and star GA0760:23968198 with event index number of 2556354

Geocentric closest approach at 2022/08/06 15:30:30 UTC

J2000 position of star is 20:57:54.5 -12:23:58
Equinox of date position of star is 20:59:06.1 -12:18:51
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 74 degrees from the moon. Moon is 63% illuminated.
TNO apparent brightness V=21.3

TNO is 42.1 AU from the Sun and 41.1 AU from the Earth.
The TNO is moving 25.2 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 67 seconds.
The 1-sigma cross-track error in the shadow position is 1512 km.

The TNO has an absolute magnitude Hv=5.1
Diameter=570.2 km assuming a 5% albedo -- 22.6 sec chord
Diameter=232.8 km assuming a 30% albedo -- 9.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 578993, (2022/08/06 15:30UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:53.6 -29:30:07  1.2 32.66  94
Tarazed        19:47:20.0 +10:40:11  2.7 29.09  67
PPM 237993     20:51:56.4 -12:27:35  5.9  1.77  72
PPM 238151     20:59:15.9 -11:52:00  7.6  0.45  74
PPM 238156     20:59:19.9 -12:17:34  8.8  0.05  74
578993         20:59:08.7 -12:18:40 15.9        74
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 578993, (2022/08/06 15:30UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 32.66  94
Tarazed        19:46:15.6 +10:36:48  2.7 29.09  67
PPM 237993     20:50:42.0 -12:32:43  5.9  1.77  72
PPM 238151     20:58:01.9 -11:57:18  7.6  0.45  74
PPM 238156     20:58:05.7 -12:22:52  8.8  0.05  74
578993         20:57:54.5 -12:23:58 15.9        74
Positions are for J2000

Event circumstances last updated at 2021/10/13 01:39:05 UT

Marc W. Buie, Southwest Research Institute

RECON