RECON: TNO occultation with 523717

Event between (523717) 14KY101 and star GA0700:08156859 with event index number of 307260

Geocentric closest approach at 2020/02/10 07:25:36 UTC

J2000 position of star is 17:08:41.3 -19:38:27
Equinox of date position of star is 17:09:51.4 -19:39:54
Stellar brightness G=15.8, use SENSEUP=128
Star is 103 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=22.0

TNO is 35.2 AU from the Sun and 35.6 AU from the Earth.
The TNO is moving 19.2 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 185 seconds.
The 1-sigma cross-track error in the shadow position is 1562 km.

The TNO has an absolute magnitude Hv=6.4
Diameter=316.2 km assuming a 5% albedo -- 16.5 sec chord
Diameter=129.1 km assuming a 30% albedo -- 6.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 523717, (2020/02/10 07:26UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:38.6 -26:28:30  0.9 11.30  95
35Eta Oph      17:11:32.0 -15:44:54  2.6  3.94 102
PPM 266364     17:05:56.9 -20:31:17  6.5  1.26 102
PPM 232670     17:10:20.1 -19:42:18  8.2  0.12 103
523717         17:09:52.5 -19:39:55 15.8       103
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 523717, (2020/02/10 07:26UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 11.30  95
35Eta Oph      17:10:22.7 -15:43:29  2.6  3.94 102
PPM 266364     17:04:45.3 -20:29:41  6.5  1.26 102
PPM 232670     17:09:08.9 -19:40:50  8.2  0.12 103
523717         17:08:41.3 -19:38:27 15.8       103
Positions are for J2000

Event circumstances last updated at 2019/10/15 22:08:11 UT

Marc W. Buie, Southwest Research Institute

RECON