RECON: TNO occultation with 578992

Event between (578992) 14JL80 and star GA0720:06860830 with event index number of 2554579

Geocentric closest approach at 2024/02/16 17:21:29 UTC

J2000 position of star is 16:57:09.4 -17:30:58
Equinox of date position of star is 16:58:31.2 -17:33:04
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 162 degrees from the moon. Moon is 51% illuminated.
Apparent brightness V=22.2

Object is 28.4 AU from the Sun and 28.7 AU from the Earth.
Apparent velocity is 16.0 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 103 seconds.
The 1-sigma cross-track error in the shadow position is 1081 km.

The object has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 12.6 sec chord
Diameter=81.5 km assuming a 30% albedo -- 5.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 578992, (2024/02/16 17:23UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:53.5 -26:29:00  0.9 10.99 169
35Eta Oph      17:11:45.8 -15:45:11  2.6  3.64 158
PPM 232348     16:57:25.6 -16:50:33  6.3  0.76 162
PPM 232370     16:58:32.3 -17:51:23  8.3  0.30 162
PPM 232362     16:58:17.1 -17:42:10  9.6  0.16 162
578992         16:58:33.4 -17:33:08 16.8       161
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 578992, (2024/02/16 17:23UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 10.99 169
35Eta Oph      17:10:22.7 -15:43:29  2.6  3.64 158
PPM 232348     16:56:02.0 -16:48:22  6.3  0.76 162
PPM 232370     16:57:08.1 -17:49:14  8.3  0.30 162
PPM 232362     16:56:53.0 -17:40:00  9.6  0.16 162
578992         16:57:09.4 -17:30:58 16.8       162
Positions are for J2000

Event circumstances last updated at 2023/07/04 04:09:24 UT

Marc W. Buie, Southwest Research Institute

RECON