Event between (470316) 07OC10 and star UC4-488-139317 with event index number of 146967
Geocentric closest approach at 2017/10/01 19:47:01 UTC
J2000 position of star is 21:30:47.7 +07:27:06
Equinox of date position of star is 21:31:37.2 +07:31:32
Stellar brightness R=14.1
Star is 22 degrees from the moon.
Moon is 83% illuminated.
TNO apparent brightness V=20.6
TNO is 35.9 AU from the Sun
and 35.2 AU from the Earth.
The TNO is moving 17.8
km/sec on the sky relative to the star, or,
2.5 arcsec/hr.
The 1-sigma error in the time of the event is 100 seconds.
The 1-sigma cross-track error in the shadow position is
1860 km.
The TNO has an absolute magnitude Hv=5.0
Diameter=602.6 km assuming a 5% albedo -- 33.9 sec chord
Diameter=246.0 km assuming a 30% albedo -- 13.8 sec chord
Dynamical classification is SCATNEAR
Star training set for 470316, (2017/10/01 19:47UT) Object RA Dec mag sep mel Vega 18:37:32.4 +38:48:03 0.0 50.04 67 Markab 23:05:38.8 +15:18:04 2.5 24.28 38 PPM 171790 21:29:17.3 +08:16:25 6.4 0.95 23 PPM 171862 21:32:09.5 +07:46:46 8.5 0.28 22 470316 21:31:40.4 +07:31:49 14.1 22 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 470316, (2017/10/01 19:47UT) Object RA Dec mag sep mel Vega 18:36:56.6 +38:47:06 0.0 50.04 67 Markab 23:04:45.7 +15:12:18 2.5 24.28 38 PPM 171790 21:28:24.9 +08:11:44 6.4 0.95 23 PPM 171862 21:31:16.9 +07:42:02 8.5 0.28 22 470316 21:30:47.7 +07:27:06 14.1 22 Positions are for J2000
Event circumstances last updated at 2016/09/01 18:16:49 UT
Marc W. Buie, Southwest Research Institute