RECON: TNO occultation with 535229

Event between (535229) 14YG50 and star GA1140:02906414 with event index number of 1618329

Geocentric closest approach at 2020/05/10 23:25:56 UTC

J2000 position of star is 07:40:42.3 +24:42:39
Equinox of date position of star is 07:41:53.1 +24:39:52
Stellar brightness G=17.0, use SENSEUP=128
Star is 165 degrees from the moon. Moon is 84% illuminated.
TNO apparent brightness V=22.8

TNO is 34.6 AU from the Sun and 35.1 AU from the Earth.
The TNO is moving 18.6 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 167 seconds.
The 1-sigma cross-track error in the shadow position is 2416 km.

The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 11.7 sec chord
Diameter=89.3 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 535229, (2020/05/10 23:26UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:33.6 +27:58:31  1.1  3.47 164
PPM 097796     07:40:25.7 +24:10:29  6.0  0.60 165
PPM 097838     07:42:17.1 +24:54:59  7.6  0.27 165
535229         07:41:56.2 +24:39:44 17.0       165
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 535229, (2020/05/10 23:26UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1  3.47 164
PPM 097796     07:39:12.0 +24:13:21  6.0  0.60 165
PPM 097838     07:41:03.1 +24:57:54  7.6  0.27 165
535229         07:40:42.3 +24:42:39 17.0       165
Positions are for J2000

Event circumstances last updated at 2019/07/02 02:38:51 UT

Marc W. Buie, Southwest Research Institute

RECON