RECON: TNO occultation with 03YX179

Event between 03YX179 and star UC4-548-046377 with event index number of 6606

Geocentric closest approach at 2017/03/18 12:56:55 UTC

J2000 position of star is 08:45:15.2 +19:33:59
Equinox of date position of star is 08:46:10.8 +19:30:24
Stellar brightness R=14.9
Star is 116 degrees from the moon. Moon is 70% illuminated.
TNO apparent brightness V=23.4

TNO is 42.1 AU from the Sun and 41.4 AU from the Earth.
The TNO is moving 15.2 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 1489 seconds.
The 1-sigma cross-track error in the shadow position is 2438 km.

The TNO has an absolute magnitude Hv=7.1
Diameter=226.0 km assuming a 5% albedo -- 14.9 sec chord
Diameter=92.2 km assuming a 30% albedo -- 6.1 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 03YX179, (2017/03/18 12:57UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:22.0 +27:59:00  1.1 16.09 130
47Del Cnc      08:45:39.7 +18:05:24  3.9  1.42 116
PPM 125719     08:47:14.5 +19:38:43  8.5  0.28 116
PPM 125703     08:46:25.1 +19:45:24 10.0  0.26 116
03YX179        08:46:14.2 +19:30:11 14.9       116
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.

Event circumstances last updated at 2016/03/13 18:17:16 UT

RECON