RECON: TNO occultation with 471136

Event between (471136) 10EO65 and star UC4-289-131105 with event index number of 329395

Geocentric closest approach at 2020/03/09 07:49:29 UTC

J2000 position of star is 17:50:13.4 -32:17:08
Equinox of date position of star is 17:51:29.6 -32:17:23
Stellar brightness R=16.3, use SENSEUP=128
Star is 105 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=21.6

TNO is 14.9 AU from the Sun and 15.0 AU from the Earth.
The TNO is moving 14.3 km/sec on the sky relative to the star, or, 4.7 arcsec/hr.
The 1-sigma error in the time of the event is 638 seconds.
The 1-sigma cross-track error in the shadow position is 2598 km.

The TNO has an absolute magnitude Hv=9.5
Diameter=75.9 km assuming a 5% albedo -- 5.3 sec chord
Diameter=31.0 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 471136, (2020/03/09 07:49UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:38.9 -26:28:30  0.9 18.52  87
34Ups Sco      17:32:08.3 -37:18:36  2.7  6.41 102
PPM 296839     17:50:29.2 -31:42:30  4.9  0.62 105
PPM 296810     17:49:36.1 -32:40:37  7.7  0.56 105
PPM 296845     17:50:43.6 -32:05:48  9.2  0.26 105
471136         17:51:32.6 -32:17:24 16.3       105
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 471136, (2020/03/09 07:49UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.52  87
34Ups Sco      17:30:45.8 -37:17:46  2.7  6.41 102
PPM 296839     17:49:10.5 -31:42:12  4.9  0.62 105
PPM 296810     17:48:16.8 -32:40:17  7.7  0.56 105
PPM 296845     17:49:24.6 -32:05:30  9.2  0.26 105
471136         17:50:13.4 -32:17:08 16.3       105
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:20:57 UT

Marc W. Buie, Southwest Research Institute

RECON