RECON: TNO occultation with 248835

Event between (248835) 06SX368 and star UC4-678-023341 with event index number of 91151

Geocentric closest approach at 2017/11/17 16:51:37 UTC

J2000 position of star is 03:47:33.0 +45:24:29
Equinox of date position of star is 03:48:47.0 +45:27:40
Stellar brightness R=15.3, use SENSEUP=128
Star is 145 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=21.3

TNO is 14.8 AU from the Sun and 13.9 AU from the Earth.
The TNO is moving 22.6 km/sec on the sky relative to the star, or, 8.0 arcsec/hr.
The 1-sigma error in the time of the event is 373 seconds.
The 1-sigma cross-track error in the shadow position is 4048 km.

The TNO has an absolute magnitude Hv=9.5
Diameter=75.9 km assuming a 5% albedo -- 3.4 sec chord
Diameter=31.0 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 248835, (2017/11/17 16:52UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:56.9 +16:32:38  0.8 30.62 157
Mirphak        03:25:36.5 +49:55:24  1.8  5.92 142
PPM 046561     03:51:19.5 +45:01:16  6.3  0.63 146
PPM 046529     03:49:19.5 +45:24:32  7.4  0.11 145
248835         03:48:48.3 +45:27:44 15.3       145
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 248835, (2017/11/17 16:52UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 30.62 157
Mirphak        03:24:19.4 +49:51:40  1.8  5.92 142
PPM 046561     03:50:04.3 +44:58:04  6.3  0.63 146
PPM 046529     03:48:04.2 +45:21:18  7.4  0.11 145
248835         03:47:33.0 +45:24:29 15.3       145
Positions are for J2000

Event circumstances last updated at 2017/07/26 16:09:36 UT

Marc W. Buie, Southwest Research Institute

RECON