Event between 04OQ15 and star UC4-347-186811 with event index number of 98488
Geocentric closest approach at 2017/05/14 00:12:18 UTC
J2000 position of star is 20:49:10.8 -20:45:18
Equinox of date position of star is 20:50:10.5 -20:41:24
Stellar brightness R=15.8,
use SENSEUP=128
Star is 42 degrees from the moon.
Moon is 91% illuminated.
TNO apparent brightness V=23.2
TNO is 39.3 AU from the Sun
and 39.0 AU from the Earth.
The TNO is moving 2.9
km/sec on the sky relative to the star, or,
0.4 arcsec/hr.
The 1-sigma error in the time of the event is 2124 seconds.
The 1-sigma cross-track error in the shadow position is
4241 km.
The TNO has an absolute magnitude Hv=7.1
Diameter=227.0 km assuming a 5% albedo -- 77.5 sec chord
Diameter=92.7 km assuming a 30% albedo -- 31.7 sec chord
Dynamical classification is CLASSICAL
Star training set for 04OQ15, (2017/05/14 00:12UT) Object RA Dec mag sep mel Fomalhaut 22:58:36.4 -29:31:48 1.2 30.27 70 38Zet Sgr 19:03:42.9 -29:51:14 2.7 25.68 20 17 Cap 20:47:10.2 -21:27:00 5.9 1.03 42 PPM 271707 20:51:54.2 -21:14:49 7.4 0.69 43 PPM 271650 20:49:34.4 -20:43:08 9.1 0.14 42 04OQ15 20:50:10.7 -20:41:24 15.8 43 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 04OQ15, (2017/05/14 00:12UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.5 -29:37:23 1.2 30.27 70 38Zet Sgr 19:02:36.7 -29:52:49 2.7 25.68 20 17 Cap 20:46:10.0 -21:30:51 5.9 1.03 42 PPM 271707 20:50:54.2 -21:18:46 7.4 0.69 43 PPM 271650 20:48:34.5 -20:47:03 9.1 0.14 42 04OQ15 20:49:10.8 -20:45:18 15.8 42 Positions are for J2000
Event circumstances last updated at 2017/04/24 16:06:10 UT
Marc W. Buie, Southwest Research Institute