Event between (65489) Ceto and star UC4-455-058451 with event index number of 69029
Geocentric closest approach at 2017/03/21 23:05:09 UTC
J2000 position of star is 15:32:26.9 +00:50:39
Equinox of date position of star is 15:33:18.2 +00:47:18
Stellar brightness R=16.0
Star is 56 degrees from the moon.
Moon is 38% illuminated.
TNO apparent brightness V=22.3
TNO is 37.6 AU from the Sun
and 37.0 AU from the Earth.
The TNO is moving 17.1
km/sec on the sky relative to the star, or,
2.3 arcsec/hr.
The 1-sigma error in the time of the event is 106 seconds.
The 1-sigma cross-track error in the shadow position is
1926 km.
The TNO has an absolute magnitude Hv=6.4
Diameter=316.2 km assuming a 5% albedo -- 18.5 sec chord
Diameter=129.1 km assuming a 30% albedo -- 7.6 sec chord
Dynamical classification is CENTAURR
Star training set for 65489, (2017/03/21 23:05UT) Object RA Dec mag sep mel Arcturus 14:16:26.9 +19:05:37 0.0 26.27 81 Unukalhai 15:45:07.0 +06:22:21 2.6 6.31 56 10 Ser 15:29:30.5 +01:47:00 5.2 1.38 57 PPM 161657 15:32:35.6 +00:49:31 8.2 0.19 56 65489 15:33:19.5 +00:47:12 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 65489, (2017/03/21 23:05UT) Object RA Dec mag sep mel Arcturus 14:15:38.4 +19:10:23 0.0 26.27 81 Unukalhai 15:44:16.2 +06:25:33 2.6 6.31 56 10 Ser 15:28:38.2 +01:50:31 5.2 1.38 57 PPM 161657 15:31:42.9 +00:52:59 8.2 0.19 56 65489 15:32:26.9 +00:50:39 16.0 56 Positions are for J2000
Event circumstances last updated at 2016/10/07 18:05:44 UT
Marc W. Buie, Southwest Research Institute