RECON: TNO occultation with 02FW6

Event between 02FW6 and star UC4-415-057744 with event index number of 54699

Geocentric closest approach at 2017/03/13 14:20:45 UTC

J2000 position of star is 13:36:30.1 -07:03:21
Equinox of date position of star is 13:37:21.0 -07:08:17
Stellar brightness R=15.8
Star is 20 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=23.8

TNO is 39.4 AU from the Sun and 38.6 AU from the Earth.
The TNO is moving 20.6 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 237 seconds.
The 1-sigma cross-track error in the shadow position is 2965 km.

The TNO has an absolute magnitude Hv=7.8
Diameter=162.9 km assuming a 5% albedo -- 7.9 sec chord
Diameter=66.5 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 
 
 

Star training set for 02FW6, (2017/03/13 14:21UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:06.1 -11:15:02  1.0  4.96  20
74 Vir         13:32:51.6 -06:20:39  4.1  1.38  19
PPM 196655     13:35:58.1 -07:03:19  8.3  0.37  20
PPM 196693     13:38:07.8 -07:13:26  8.8  0.20  20
02FW6          13:37:24.1 -07:08:35 15.8        20
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 2016/03/12 18:20:09 UT

RECON