RECON: TNO occultation with 15FN345

Event between 15FN345 and star UC4-481-059008 with event index number of 143823

Geocentric closest approach at 2017/06/15 12:28:30 UTC

J2000 position of star is 16:05:41.9 +06:10:19
Equinox of date position of star is 16:06:33.1 +06:07:33
Stellar brightness R=16.2, use SENSEUP=128
Star is 93 degrees from the moon. Moon is 70% illuminated.
TNO apparent brightness V=22.1

TNO is 39.2 AU from the Sun and 38.4 AU from the Earth.
The TNO is moving 22.0 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 678 seconds.
The 1-sigma cross-track error in the shadow position is 3226 km.

The TNO has an absolute magnitude Hv=6.1
Diameter=368.1 km assuming a 5% albedo -- 16.7 sec chord
Diameter=150.3 km assuming a 30% albedo -- 6.8 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 15FN345, (2017/06/15 12:28UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:16:27.5 +19:05:32  0.0 29.76 121
Unukalhai      15:45:07.7 +06:22:18  2.6  5.33  98
PPM 162281     16:10:02.8 +06:19:49  6.0  0.89  92
PPM 162235     16:07:14.8 +05:22:00  8.0  0.78  93
PPM 162239     16:07:17.3 +06:08:53  9.8  0.18  93
15FN345        16:06:33.3 +06:07:32 16.2        93
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 15FN345, (2017/06/15 12:28UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:15:38.3 +19:10:22  0.0 29.76 121
Unukalhai      15:44:16.2 +06:25:33  2.6  5.33  98
PPM 162281     16:09:11.5 +06:22:31  6.0  0.89  92
PPM 162235     16:06:23.1 +05:24:46  8.0  0.78  93
PPM 162239     16:06:25.8 +06:11:38  9.8  0.18  93
15FN345        16:05:41.9 +06:10:19 16.2        93
Positions are for J2000

Event circumstances last updated at 2017/05/16 18:28:02 UT

Marc W. Buie, Southwest Research Institute

RECON