RECON: TNO occultation with 03WU188

Event between 03WU188 and star GA1120:02848297 with event index number of 237768

Geocentric closest approach at 2020/01/11 14:12:32 UTC

J2000 position of star is 07:37:00.3 +23:24:44
Equinox of date position of star is 07:38:10.3 +23:22:03
Stellar brightness G=16.4, use SENSEUP=128
Star is 9 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=22.7

TNO is 43.6 AU from the Sun and 42.6 AU from the Earth.
The TNO is moving 25.7 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 187 seconds.
The 1-sigma cross-track error in the shadow position is 1639 km.

The TNO has an absolute magnitude Hv=6.3
Diameter=332.7 km assuming a 5% albedo -- 12.9 sec chord
Diameter=135.8 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 03WU188, (2020/01/11 14:13UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:32.4 +27:58:34  1.1  4.98   9
PPM 097796     07:40:24.5 +24:10:32  6.0  0.95   9
PPM 097712     07:36:23.4 +23:00:03  8.1  0.55   9
PPM 097768     07:39:09.1 +23:47:23  9.1  0.48   9
PPM 097739     07:37:53.7 +23:33:01 11.1  0.20   9
03WU188        07:38:12.4 +23:21:58 16.4         9
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 03WU188, (2020/01/11 14:13UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1  4.98   9
PPM 097796     07:39:12.0 +24:13:21  6.0  0.95   9
PPM 097712     07:35:11.4 +23:02:45  8.1  0.55   9
PPM 097768     07:37:56.8 +23:50:10  9.1  0.48   9
PPM 097739     07:36:41.4 +23:35:46 11.1  0.20   9
03WU188        07:37:00.3 +23:24:44 16.4         9
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:09:01 UT

Marc W. Buie, Southwest Research Institute

RECON