Event between (52975) Cyllarus and star UC4-611-041463 with event index number of 83104
Geocentric closest approach at 2017/09/19 14:08:44 UTC
J2000 position of star is 07:47:10.1 +32:02:47
Equinox of date position of star is 07:48:17.1 +32:00:08
Stellar brightness R=16.0,
use SENSEUP=128
Star is 56 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=24.0
TNO is 27.4 AU from the Sun
and 27.8 AU from the Earth.
The TNO is moving 18.6
km/sec on the sky relative to the star, or,
3.3 arcsec/hr.
The 1-sigma error in the time of the event is 1377 seconds.
The 1-sigma cross-track error in the shadow position is
2525 km.
The TNO has an absolute magnitude Hv=9.4
Diameter=79.4 km assuming a 5% albedo -- 4.3 sec chord
Diameter=32.4 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
Star training set for 52975, (2017/09/19 14:09UT) Object RA Dec mag sep mel Pollux 07:46:23.9 +27:58:55 1.1 4.04 56 80Pi Gem 07:48:38.7 +33:22:15 5.1 1.37 56 PPM 073117 07:49:15.0 +32:48:41 8.2 0.83 56 PPM 073103 07:48:17.8 +31:53:31 9.0 0.11 56 52975 07:48:17.7 +32:00:07 16.0 56 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 52975, (2017/09/19 14:09UT) Object RA Dec mag sep mel Pollux 07:45:18.1 +28:01:33 1.1 4.04 56 80Pi Gem 07:47:30.3 +33:24:56 5.1 1.37 56 PPM 073117 07:48:06.9 +32:51:24 8.2 0.83 56 PPM 073103 07:47:10.2 +31:56:12 9.0 0.11 56 52975 07:47:10.1 +32:02:47 16.0 56 Positions are for J2000
Event circumstances last updated at 2017/07/22 16:03:31 UT
Marc W. Buie, Southwest Research Institute