Event between (60558) Echeclus and star UC4-545-013949 with event index number of 212933
Geocentric closest approach at 2019/09/07 19:16:05 UTC
J2000 position of star is 05:17:28.9 +18:48:19
Equinox of date position of star is 05:18:32.2 +18:49:24
Stellar brightness R=16.6,
use SENSEUP=128
Star is 165 degrees from the moon.
Moon is 67% illuminated.
TNO apparent brightness V=19.6
TNO is 9.0 AU from the Sun
and 9.0 AU from the Earth.
The TNO is moving 11.6
km/sec on the sky relative to the star, or,
6.4 arcsec/hr.
The 1-sigma error in the time of the event is 30 seconds.
The 1-sigma cross-track error in the shadow position is
328 km.
The TNO has an absolute magnitude Hv=9.6
Diameter=72.4 km assuming a 5% albedo -- 6.3 sec chord
Diameter=29.6 km assuming a 30% albedo -- 2.6 sec chord
Dynamical classification is CENTAURR
Star training set for 60558, (2019/09/07 19:16UT) Object RA Dec mag sep mel Aldebaran 04:37:03.1 +16:32:51 0.8 10.16 155 Alnath 05:27:32.3 +28:37:20 1.6 10.01 166 PPM 120839 05:21:28.0 +19:35:48 6.5 1.02 166 PPM 120814 05:19:47.9 +18:14:13 8.5 0.65 165 PPM 120768 05:16:58.5 +18:39:32 9.0 0.43 165 60558 05:18:38.3 +18:49:31 16.6 165 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 60558, (2019/09/07 19:16UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 10.16 155 Alnath 05:26:17.5 +28:36:24 1.6 10.01 166 PPM 120839 05:20:18.3 +19:34:41 6.5 1.02 166 PPM 120814 05:18:38.9 +18:13:04 8.5 0.65 165 PPM 120768 05:15:49.2 +18:38:18 9.0 0.43 165 60558 05:17:28.9 +18:48:19 16.6 165 Positions are for J2000
Event circumstances last updated at 2017/12/15 17:14:49 UT
Marc W. Buie, Southwest Research Institute