RECON: TNO occultation with 511130

Event between (511130) 13WV107 and star GA0940:03176334 with event index number of 246964

Geocentric closest approach at 2020/02/09 17:50:58 UTC

J2000 position of star is 08:18:14.8 +04:32:33
Equinox of date position of star is 08:19:14.3 +04:28:59
Stellar brightness G=16.3, use SENSEUP=128
Star is 28 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=20.2

TNO is 10.7 AU from the Sun and 9.8 AU from the Earth.
The TNO is moving 19.8 km/sec on the sky relative to the star, or, 10.0 arcsec/hr.
The 1-sigma error in the time of the event is 89 seconds.
The 1-sigma cross-track error in the shadow position is 1229 km.

The TNO has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 3.2 sec chord
Diameter=25.8 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 511130, (2020/02/09 17:51UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:32.7 +27:58:34  1.1 24.76  33
Alphard        09:28:34.5 -08:44:48  2.0 21.75  26
PPM 154212     08:18:21.9 +04:09:21  6.5  0.40  28
PPM 154249     08:19:38.7 +04:19:48  9.7  0.17  28
511130         08:19:18.4 +04:28:44 16.3        27
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 511130, (2020/02/09 17:51UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 24.76  33
Alphard        09:27:35.2 -08:39:31  2.0 21.75  26
PPM 154212     08:17:18.4 +04:13:09  6.5  0.40  28
PPM 154249     08:18:35.2 +04:23:38  9.7  0.17  28
511130         08:18:14.8 +04:32:33 16.3        28
Positions are for J2000

Event circumstances last updated at 2018/10/25 20:54:21 UT

Marc W. Buie, Southwest Research Institute

RECON