RECON: TNO occultation with 08QB43

Event between 08QB43 and star UC4-545-148673 with event index number of 169566

Geocentric closest approach at 2017/07/01 16:47:44 UTC

J2000 position of star is 23:46:30.3 +18:51:57
Equinox of date position of star is 23:47:23.0 +18:57:43
Stellar brightness R=15.0, use SENSEUP=128
Star is 154 degrees from the moon. Moon is 57% illuminated.
TNO apparent brightness V=21.3

TNO is 38.2 AU from the Sun and 38.1 AU from the Earth.
The TNO is moving 11.1 km/sec on the sky relative to the star, or, 1.4 arcsec/hr.
The 1-sigma error in the time of the event is 405 seconds.
The 1-sigma cross-track error in the shadow position is 4385 km.

The TNO has an absolute magnitude Hv=5.3
Diameter=532.1 km assuming a 5% albedo -- 47.9 sec chord
Diameter=217.2 km assuming a 30% albedo -- 19.6 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 08QB43, (2017/07/01 16:48UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:01.7 +45:20:37  1.3 46.37 108
Algenib        00:14:08.3 +15:16:51  2.8  7.37 161
81Phi Peg      23:53:22.8 +19:13:03  5.1  1.44 155
PPM 142769     23:43:24.6 +18:45:49  8.0  0.96 153
PPM 142850     23:47:49.4 +19:34:13  9.6  0.62 154
PPM 142812     23:46:10.4 +18:59:37 10.7  0.29 154
08QB43         23:47:23.6 +18:57:47 15.0       154
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 08QB43, (2017/07/01 16:48UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 46.37 108
Algenib        00:13:14.2 +15:11:01  2.8  7.37 161
81Phi Peg      23:52:29.3 +19:07:12  5.1  1.44 155
PPM 142769     23:42:31.4 +18:40:00  8.0  0.96 153
PPM 142850     23:46:56.0 +19:28:23  9.6  0.62 154
PPM 142812     23:45:17.1 +18:53:47 10.7  0.29 154
08QB43         23:46:30.3 +18:51:57 15.0       154
Positions are for J2000

Event circumstances last updated at 2017/04/24 16:09:08 UT

Marc W. Buie, Southwest Research Institute

RECON