RECON: TNO occultation with 03KO20

Event between 03KO20 and star GA0700:05789492 with event index number of 253663

Geocentric closest approach at 2020/04/04 17:54:45 UTC

J2000 position of star is 15:28:32.3 -18:44:02
Equinox of date position of star is 15:29:36.9 -18:47:52
Stellar brightness G=16.0, use SENSEUP=128
Star is 87 degrees from the moon. Moon is 84% illuminated.
TNO apparent brightness V=23.2

TNO is 45.2 AU from the Sun and 44.4 AU from the Earth.
The TNO is moving 18.3 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 753 seconds.
The 1-sigma cross-track error in the shadow position is 3499 km.

The TNO has an absolute magnitude Hv=6.6
Diameter=287.1 km assuming a 5% albedo -- 15.7 sec chord
Diameter=117.2 km assuming a 30% albedo -- 6.4 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 03KO20, (2020/04/04 17:55UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.2 -26:28:31  0.9 16.00 102
7Del Sco       16:01:32.1 -22:40:40  2.3  8.39  95
PPM 230380     15:33:46.7 -19:44:17  5.5  1.34  88
PPM 230293     15:29:52.8 -18:47:33  8.3  0.04  87
03KO20         15:29:41.9 -18:48:10 16.0        87
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 03KO20, (2020/04/04 17:55UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 16.00 102
7Del Sco       16:00:20.0 -22:37:18  2.3  8.39  95
PPM 230380     15:32:36.7 -19:40:14  5.5  1.34  88
PPM 230293     15:28:43.2 -18:43:25  8.3  0.04  87
03KO20         15:28:32.3 -18:44:02 16.0        87
Positions are for J2000

Event circumstances last updated at 2018/10/26 20:53:55 UT

Marc W. Buie, Southwest Research Institute

RECON