RECON: TNO occultation with 14OE394

Event between 14OE394 and star UC4-339-188268 with event index number of 139553

Geocentric closest approach at 2018/07/11 12:45:32 UTC

J2000 position of star is 19:46:30.5 -22:12:33
Equinox of date position of star is 19:47:32.4 -22:09:56
Stellar brightness R=11.2, use SENSEUP=8
Star is 152 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=21.4

TNO is 45.3 AU from the Sun and 44.3 AU from the Earth.
The TNO is moving 24.7 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 658 seconds.
The 1-sigma cross-track error in the shadow position is 2356 km.

The TNO has an absolute magnitude Hv=4.9
Diameter=636.8 km assuming a 5% albedo -- 25.7 sec chord
Diameter=260.0 km assuming a 30% albedo -- 10.5 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 14OE394, (2018/07/11 12:46UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:40.2 -29:31:25  1.2 43.32 110
Nunki          18:56:24.8 -26:16:20  2.0 12.37 163
PPM 270116     19:41:13.9 -23:23:07  5.7  1.91 153
PPM 270276     19:48:36.7 -21:46:51  8.3  0.45 152
PPM 270238     19:47:01.1 -22:01:34  8.8  0.19 152
14OE394        19:47:36.5 -22:09:46 11.2       152
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 14OE394, (2018/07/11 12:46UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 43.32 110
Nunki          18:55:15.9 -26:17:49  2.0 12.37 163
PPM 270116     19:40:07.2 -23:25:45  5.7  1.91 153
PPM 270276     19:47:31.0 -21:49:40  8.3  0.45 152
PPM 270238     19:45:55.2 -22:04:20  8.8  0.19 152
14OE394        19:46:30.5 -22:12:33 11.2       152
Positions are for J2000

Event circumstances last updated at 2017/05/18 18:06:59 UT

Marc W. Buie, Southwest Research Institute

RECON