Event between (469514) 03QA91 and star UC4-410-143972 with event index number of 148463
Geocentric closest approach at 2018/07/20 00:07:09 UTC
J2000 position of star is 23:05:50.8 -08:04:13
Equinox of date position of star is 23:06:46.7 -07:58:24
Stellar brightness R=15.1,
use SENSEUP=128
Star is 135 degrees from the moon.
Moon is 52% illuminated.
TNO apparent brightness V=22.1
TNO is 44.3 AU from the Sun
and 43.6 AU from the Earth.
The TNO is moving 15.5
km/sec on the sky relative to the star, or,
1.8 arcsec/hr.
The 1-sigma error in the time of the event is 208 seconds.
The 1-sigma cross-track error in the shadow position is
3000 km.
The TNO has an absolute magnitude Hv=5.6
Diameter=457.1 km assuming a 5% albedo -- 29.5 sec chord
Diameter=186.6 km assuming a 30% albedo -- 12.1 sec chord
Dynamical classification is CLASSICAL
Star training set for 469514, (2018/07/20 00:07UT) Object RA Dec mag sep mel Fomalhaut 22:58:40.3 -29:31:25 1.2 21.64 124 81 Aqr 23:02:21.4 -06:57:40 6.1 1.50 134 PPM 207103 23:04:52.8 -07:57:30 8.3 0.48 135 PPM 207143 23:06:32.9 -07:59:51 9.4 0.07 135 469514 23:06:48.6 -07:58:12 15.1 135 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 469514, (2018/07/20 00:07UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.5 -29:37:23 1.2 21.64 124 81 Aqr 23:01:23.6 -07:03:40 6.1 1.50 134 PPM 207103 23:03:54.9 -08:03:31 8.3 0.48 135 PPM 207143 23:05:35.0 -08:05:52 9.4 0.07 135 469514 23:05:50.8 -08:04:13 15.1 135 Positions are for J2000
Event circumstances last updated at 2017/12/05 18:48:55 UT
Marc W. Buie, Southwest Research Institute