RECON: TNO occultation with 14XQ40

Event between 14XQ40 and star UC4-379-061404 with event index number of 141704

Geocentric closest approach at 2017/05/15 13:30:38 UTC

J2000 position of star is 11:42:18.2 -14:17:03
Equinox of date position of star is 11:43:09.8 -14:22:41
Stellar brightness R=13.2
Star is 105 degrees from the moon. Moon is 82% illuminated.
TNO apparent brightness V=21.9

TNO is 18.2 AU from the Sun and 17.6 AU from the Earth.
The TNO is moving 11.0 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 262 seconds.
The 1-sigma cross-track error in the shadow position is 3050 km.

The TNO has an absolute magnitude Hv=9.1
Diameter=92.9 km assuming a 5% albedo -- 8.5 sec chord
Diameter=37.9 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 14XQ40, (2017/05/15 13:31UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:06.6 -11:15:05  1.0 25.27  82
4Gam Crv       12:16:42.1 -17:38:18  2.6  8.69  96
PPM 224734     11:40:44.0 -14:33:54  6.5  0.62 105
PPM 224818     11:44:27.2 -14:07:01  8.5  0.40 104
PPM 224805     11:44:00.2 -14:23:59  9.5  0.20 104
14XQ40         11:43:11.2 -14:22:50 13.2       104
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 14XQ40, (2017/05/15 13:31UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 25.27  82
4Gam Crv       12:15:48.2 -17:32:31  2.6  8.69  96
PPM 224734     11:39:51.1 -14:28:07  6.5  0.62 105
PPM 224818     11:43:34.2 -14:01:14  8.5  0.40 104
PPM 224805     11:43:07.2 -14:18:12  9.5  0.20 104
14XQ40         11:42:18.2 -14:17:03 13.2       104
Positions are for J2000

Event circumstances last updated at 2016/11/30 19:06:05 UT

Marc W. Buie, Southwest Research Institute

RECON