RECON: TNO occultation with 119315

Event between (119315) 01SQ73 and star UC4-656-045624 with event index number of 180691

Geocentric closest approach at 2019/02/07 19:55:29 UTC

J2000 position of star is 06:52:00.5 +41:05:08
Equinox of date position of star is 06:53:15.9 +41:03:46
Stellar brightness R=14.1, use SENSEUP=64
Star is 110 degrees from the moon. Moon is 8% illuminated.
TNO apparent brightness V=22.6

TNO is 19.6 AU from the Sun and 18.9 AU from the Earth.
The TNO is moving 18.5 km/sec on the sky relative to the star, or, 4.9 arcsec/hr.
The 1-sigma error in the time of the event is 514 seconds.
The 1-sigma cross-track error in the shadow position is 2716 km.

The TNO has an absolute magnitude Hv=9.6
Diameter=72.4 km assuming a 5% albedo -- 3.9 sec chord
Diameter=29.6 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 119315, (2019/02/07 19:55UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:29.0 +27:58:43  1.1 17.02 123
34Bet Aur      06:00:55.9 +44:56:50  1.9 10.33 100
58Psi7Aur      06:52:06.9 +41:45:25  6.0  0.73 110
PPM 049392     06:52:50.8 +40:50:35  8.3  0.24 110
PPM 049389     06:52:33.1 +40:59:08  9.7  0.17 110
119315         06:53:20.9 +41:03:41 14.1       110
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 119315, (2019/02/07 19:55UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 17.02 123
34Bet Aur      05:59:31.6 +44:56:51  1.9 10.33 100
58Psi7Aur      06:50:45.9 +41:46:50  6.0  0.73 110
PPM 049392     06:51:30.6 +40:52:02  8.3  0.24 110
PPM 049389     06:51:12.7 +41:00:34  9.7  0.17 110
119315         06:52:00.5 +41:05:08 14.1       110
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:13:58 UT

Marc W. Buie, Southwest Research Institute

RECON