RECON: TNO occultation with 05JJ186

Event between 05JJ186 and star GA0640:22409640 with event index number of 1040083

Geocentric closest approach at 2020/06/10 20:04:47 UTC

J2000 position of star is 18:04:41.5 -25:21:57
Equinox of date position of star is 18:05:53.6 -25:21:48
Stellar brightness G=15.6, use SENSEUP=128
Star is 52 degrees from the moon. Moon is 73% illuminated.
TNO apparent brightness V=22.8

TNO is 41.0 AU from the Sun and 40.0 AU from the Earth.
The TNO is moving 23.9 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 2694 seconds.
The 1-sigma cross-track error in the shadow position is 4298 km.

The TNO has an absolute magnitude Hv=6.7
Diameter=270.4 km assuming a 5% albedo -- 11.3 sec chord
Diameter=110.4 km assuming a 30% albedo -- 4.6 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 05JJ186, (2020/06/10 20:05UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.9 -26:28:32  0.9 21.42  73
Nunki          18:56:31.9 -26:16:10  2.0 11.41  41
4 Sgr          18:01:02.5 -23:48:58  4.8  1.91  53
PPM 267811     18:06:04.5 -25:36:11  7.6  0.24  52
PPM 267807     18:05:56.5 -25:11:49  9.7  0.17  52
05JJ186        18:05:57.3 -25:21:48 15.6        52
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 05JJ186, (2020/06/10 20:05UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 21.42  73
Nunki          18:55:15.9 -26:17:49  2.0 11.41  41
4 Sgr          17:59:47.6 -23:48:59  4.8  1.91  53
PPM 267811     18:04:48.5 -25:36:20  7.6  0.24  52
PPM 267807     18:04:40.8 -25:11:58  9.7  0.17  52
05JJ186        18:04:41.5 -25:21:57 15.6        52
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:49:10 UT

Marc W. Buie, Southwest Research Institute

RECON