RECON: TNO occultation with 523764

Event between (523764) 14WC510 and star GA0920:01122772 with event index number of 348166

Geocentric closest approach at 2020/01/24 15:53:34 UTC

J2000 position of star is 06:09:40.6 +03:39:39
Equinox of date position of star is 06:10:42.5 +03:39:22
Stellar brightness G=15.2, use SENSEUP=128
Star is 144 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=22.1

TNO is 30.3 AU from the Sun and 29.5 AU from the Earth.
The TNO is moving 20.6 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 62 seconds.
The 1-sigma cross-track error in the shadow position is 1074 km.

The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 10.6 sec chord
Diameter=89.3 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 
 
 

Star training set for 523764, (2020/01/24 15:54UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:15.5 +07:24:33  0.4  5.20 143
34Del Ori      05:33:02.0 -00:17:09  2.2 10.21 134
PPM 150016     06:11:26.8 +02:53:47  6.5  0.78 144
PPM 150021     06:11:40.2 +03:51:59  7.9  0.31 145
PPM 149986     06:10:19.9 +03:40:56  9.4  0.10 144
523764         06:10:44.0 +03:39:22 15.2       145
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 523764, (2020/01/24 15:54UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  5.20 143
34Del Ori      05:32:00.4 -00:17:57  2.2 10.21 134
PPM 150016     06:10:23.7 +02:54:07  6.5  0.78 144
PPM 150021     06:10:36.7 +03:52:18  7.9  0.31 145
PPM 149986     06:09:16.5 +03:41:13  9.4  0.10 144
523764         06:09:40.6 +03:39:39 15.2       144
Positions are for J2000

Event circumstances last updated at 2019/08/06 22:15:56 UT

Marc W. Buie, Southwest Research Institute

RECON