RECON: TNO occultation with 533396

Event between (533396) 14GQ53 and star GA0880:05113189 with event index number of 1606162

Geocentric closest approach at 2020/04/25 20:58:32 UTC

J2000 position of star is 16:55:41.9 -01:58:41
Equinox of date position of star is 16:56:42.7 -02:00:29
Stellar brightness G=16.9, use SENSEUP=128
Star is 161 degrees from the moon. Moon is 7% illuminated.
TNO apparent brightness V=22.4

TNO is 19.7 AU from the Sun and 19.0 AU from the Earth.
The TNO is moving 17.1 km/sec on the sky relative to the star, or, 4.5 arcsec/hr.
The 1-sigma error in the time of the event is 79 seconds.
The 1-sigma cross-track error in the shadow position is 1027 km.

The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 4.9 sec chord
Diameter=34.0 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 533396, (2020/04/25 20:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.4 -26:28:31  0.9 25.26 173
13Zet Oph      16:38:16.8 -10:36:24  2.6  9.74 170
PPM 179990     17:06:35.1 -00:55:07  5.4  2.69 159
PPM 179954     16:55:13.8 -01:38:41  7.1  0.53 160
PPM 179958     16:56:46.2 -02:07:38 10.0  0.12 161
533396         16:56:45.3 -02:00:33 16.9       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 533396, (2020/04/25 20:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 25.26 173
13Zet Oph      16:37:09.6 -10:34:01  2.6  9.74 170
PPM 179990     17:05:32.2 -00:53:32  5.4  2.69 159
PPM 179954     16:54:10.6 -01:36:46  7.1  0.53 160
PPM 179958     16:55:42.7 -02:05:46 10.0  0.12 161
533396         16:55:41.9 -01:58:41 16.9       161
Positions are for J2000

Event circumstances last updated at 2019/07/02 02:36:55 UT

Marc W. Buie, Southwest Research Institute

RECON