RECON: TNO occultation with 469708

Event between (469708) 05GE187 and star GA0800:05462378 with event index number of 201815

Geocentric closest approach at 2019/07/16 00:34:26 UTC

J2000 position of star is 16:49:10.6 -08:11:51
Equinox of date position of star is 16:50:10.7 -08:13:43
Stellar brightness G=14.9, use SENSEUP=128
Star is 34 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=21.9

TNO is 27.9 AU from the Sun and 27.2 AU from the Earth.
The TNO is moving 16.2 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 116 seconds.
The 1-sigma cross-track error in the shadow position is 1055 km.

The TNO has an absolute magnitude Hv=7.3
Diameter=208.9 km assuming a 5% albedo -- 12.9 sec chord
Diameter=85.3 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 469708, (2019/07/16 00:34UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.5 -26:28:25  0.9 18.83  34
13Zet Oph      16:38:14.2 -10:36:19  2.6  3.79  36
23 Oph         16:55:38.4 -06:11:04  5.3  2.45  34
PPM 200038     16:50:03.8 -08:57:47  8.4  0.73  34
PPM 200047     16:50:18.0 -08:07:08  9.6  0.11  34
469708         16:50:14.3 -08:13:49 14.9        34
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 469708, (2019/07/16 00:34UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.83  34
13Zet Oph      16:37:09.6 -10:34:01  2.6  3.79  36
23 Oph         16:54:35.6 -06:09:15  5.3  2.45  34
PPM 200038     16:48:59.8 -08:55:49  8.4  0.73  34
PPM 200047     16:49:14.4 -08:05:10  9.6  0.11  34
469708         16:49:10.6 -08:11:51 14.9        34
Positions are for J2000

Event circumstances last updated at 2018/06/12 02:23:51 UT

Marc W. Buie, Southwest Research Institute

RECON