Event between (60558) Echeclus and star GA1040:00393033 with event index number of 181696
Geocentric closest approach at 2019/02/17 21:08:53 UTC
J2000 position of star is 03:51:22.7 +15:52:55
Equinox of date position of star is 03:52:27.7 +15:56:18
Stellar brightness G=13.9,
use SENSEUP=64
Star is 65 degrees from the moon.
Moon is 95% illuminated.
TNO apparent brightness V=19.2
TNO is 8.4 AU from the Sun
and 8.4 AU from the Earth.
The TNO is moving 10.3
km/sec on the sky relative to the star, or,
6.1 arcsec/hr.
The 1-sigma error in the time of the event is 31 seconds.
The 1-sigma cross-track error in the shadow position is
309 km.
The TNO has an absolute magnitude Hv=9.5
Diameter=75.9 km assuming a 5% albedo -- 7.4 sec chord
Diameter=31.0 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is CENTAURR
Star training set for 60558, (2019/02/17 21:09UT) Object RA Dec mag sep mel Aldebaran 04:37:01.2 +16:32:46 0.8 10.71 54 44Zet Per 03:55:20.4 +31:56:20 2.8 16.01 61 PPM 119433 03:54:15.9 +17:22:58 6.0 1.51 64 PPM 119400 03:51:18.3 +16:03:26 8.5 0.30 65 60558 03:52:27.7 +15:56:18 13.9 64 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, (2019/02/17 21:09UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 10.71 54 44Zet Per 03:54:07.9 +31:53:01 2.8 16.01 61 PPM 119433 03:53:10.2 +17:19:37 6.0 1.51 64 PPM 119400 03:50:13.3 +16:00:01 8.5 0.30 65 60558 03:51:22.7 +15:52:55 13.9 65 Positions are for J2000
Event circumstances last updated at 2019/02/12 06:11:57 UT
Marc W. Buie, Southwest Research Institute