RECON: TNO occultation with 14JW80

Event between 14JW80 and star GA0660:06929681 with event index number of 311870

Geocentric closest approach at 2019/09/20 22:17:41 UTC

J2000 position of star is 16:02:00.3 -23:45:18
Equinox of date position of star is 16:03:08.8 -23:48:25
Stellar brightness G=11.4, use SENSEUP=8
Star is 168 degrees from the moon. Moon is 62% illuminated.
TNO apparent brightness V=22.6

TNO is 45.9 AU from the Sun and 46.3 AU from the Earth.
The TNO is moving 16.8 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 134 seconds.
The 1-sigma cross-track error in the shadow position is 2540 km.

The TNO has an absolute magnitude Hv=5.8
Diameter=428.6 km assuming a 5% albedo -- 25.0 sec chord
Diameter=175.0 km assuming a 30% albedo -- 10.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 14JW80, (2019/09/20 22:18UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:37.2 -26:28:27  0.9  6.76 172
7Del Sco       16:01:30.2 -22:40:35  2.3  1.20 168
PPM 265112     16:07:17.2 -23:39:31  6.3  0.95 169
PPM 264996     16:02:19.1 -24:19:15  7.0  0.55 168
PPM 265037     16:03:45.5 -23:44:01  9.2  0.15 168
14JW80         16:03:11.1 -23:48:32 11.4       169
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 14JW80, (2019/09/20 22:18UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  6.76 172
7Del Sco       16:00:20.0 -22:37:18  2.3  1.20 168
PPM 265112     16:06:06.4 -23:36:23  6.3  0.95 169
PPM 264996     16:01:08.1 -24:16:00  7.0  0.55 168
PPM 265037     16:02:34.7 -23:40:48  9.2  0.15 168
14JW80         16:02:00.3 -23:45:18 11.4       168
Positions are for J2000

Event circumstances last updated at 2019/01/28 21:46:56 UT

Marc W. Buie, Southwest Research Institute

RECON