RECON: TNO occultation with 15FG345

Event between 15FG345 and star UC4-488-058408 with event index number of 110812

Geocentric closest approach at 2017/03/10 15:45:49 UTC

J2000 position of star is 14:19:41.3 +07:25:52
Equinox of date position of star is 14:20:30.9 +07:21:19
Stellar brightness R=14.3
Star is 66 degrees from the moon. Moon is 96% illuminated.
TNO apparent brightness V=21.1

TNO is 40.5 AU from the Sun and 39.8 AU from the Earth.
The TNO is moving 19.1 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 137 seconds.
The 1-sigma cross-track error in the shadow position is 2611 km.

The TNO has an absolute magnitude Hv=4.9
Diameter=631.0 km assuming a 5% albedo -- 27.6 sec chord
Diameter=257.6 km assuming a 30% albedo -- 11.3 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 15FG345, (2017/03/10 15:46UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:16:26.8 +19:05:38  0.0 11.78  63
Vindemiatrix   13:03:02.0 +10:52:02  2.8 19.45  46
PPM 160594     14:24:51.8 +08:10:00  5.8  1.34  66
PPM 160543     14:21:11.7 +08:30:14  8.1  1.16  65
PPM 160525     14:19:55.4 +08:00:35  9.5  0.67  65
PPM 160526     14:19:59.0 +07:18:01 10.1  0.15  65
15FG345        14:20:32.4 +07:21:10 14.3        66
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 15FG345, (2017/03/10 15:46UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:15:38.4 +19:10:23  0.0 11.78  63
Vindemiatrix   13:02:10.3 +10:57:33  2.8 19.45  46
PPM 160594     14:24:00.9 +08:14:38  5.8  1.34  66
PPM 160543     14:20:20.9 +08:34:56  8.1  1.16  65
PPM 160525     14:19:04.4 +08:05:18  9.5  0.67  65
PPM 160526     14:19:07.8 +07:22:43 10.1  0.15  65
15FG345        14:19:41.3 +07:25:52 14.3        66
Positions are for J2000

Event circumstances last updated at 2016/09/04 18:23:35 UT

Marc W. Buie, Southwest Research Institute

RECON