RECON: TNO occultation with 471143

Event between (471143) Dziewanna and star GA0480:06859140 with event index number of 195761

Geocentric closest approach at 2019/06/19 13:47:21 UTC

J2000 position of star is 14:00:10.0 -40:04:58
Equinox of date position of star is 14:01:20.8 -40:10:35
Stellar brightness G=14.9, use SENSEUP=128
Star is 73 degrees from the moon. Moon is 95% illuminated.
TNO apparent brightness V=19.6

TNO is 36.0 AU from the Sun and 35.3 AU from the Earth.
The TNO is moving 16.9 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 200 seconds.
The 1-sigma cross-track error in the shadow position is 3496 km.

The TNO has an absolute magnitude Hv=3.9
Diameter=1000.0 km assuming a 5% albedo -- 59.3 sec chord
Diameter=408.3 km assuming a 30% albedo -- 24.2 sec chord
Dynamical classification is 7:2EEEEE
 
 
 
 
 
 
 
 

Star training set for 471143, (2019/06/19 13:47UT)
Object            RA         Dec     mag  sep  mel
Hadar          14:05:12.9 -60:27:57  0.6 20.30  69
5The Cen       14:07:50.1 -36:27:54  2.1  3.92  73
PPM 319095     14:02:30.0 -40:18:55  5.8  0.26  73
PPM 292075     14:00:55.9 -40:01:05  7.7  0.18  73
PPM 292098     14:02:00.9 -40:05:13  9.4  0.16  73
471143         14:01:20.9 -40:10:36 14.9        73
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 471143, (2019/06/19 13:47UT)
Object            RA         Dec     mag  sep  mel
Hadar          14:03:49.3 -60:22:23  0.6 20.30  69
5The Cen       14:06:40.1 -36:22:22  2.1  3.92  73
PPM 319095     14:01:19.0 -40:13:19  5.8  0.26  73
PPM 292075     13:59:45.1 -39:55:27  7.7  0.18  73
PPM 292098     14:00:50.0 -39:59:37  9.4  0.16  73
471143         14:00:10.0 -40:04:58 14.9        73
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:17:30 UT

Marc W. Buie, Southwest Research Institute

RECON