Event between (309139) 06XQ51 and star UC4-376-052578 with event index number of 95054
Geocentric closest approach at 2017/12/17 06:39:57 UTC
J2000 position of star is 08:36:48.9 -14:55:21
Equinox of date position of star is 08:37:39.0 -14:59:09
Stellar brightness R=14.8,
use SENSEUP=128
Star is 116 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=22.4
TNO is 17.5 AU from the Sun
and 17.0 AU from the Earth.
The TNO is moving 18.3
km/sec on the sky relative to the star, or,
5.4 arcsec/hr.
The 1-sigma error in the time of the event is 519 seconds.
The 1-sigma cross-track error in the shadow position is
5371 km.
The TNO has an absolute magnitude Hv=9.8
Diameter=66.1 km assuming a 5% albedo -- 3.6 sec chord
Diameter=27.0 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
Star training set for 309139, (2017/12/17 06:40UT) Object RA Dec mag sep mel Adhara 06:59:19.9 -28:59:51 1.5 26.66 124 15Rho Pup 08:08:18.6 -24:21:25 2.8 11.64 117 9 Hya 08:42:33.4 -16:00:32 4.6 1.56 115 PPM 220363 08:37:42.5 -14:49:59 8.4 0.15 116 309139 08:37:39.1 -14:59:09 14.8 116 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 309139, (2017/12/17 06:40UT) Object RA Dec mag sep mel Adhara 06:58:37.6 -28:58:19 1.5 26.66 124 15Rho Pup 08:07:32.5 -24:18:15 2.8 11.64 117 9 Hya 08:41:43.4 -15:56:38 4.6 1.56 115 PPM 220363 08:36:52.2 -14:46:11 8.4 0.15 116 309139 08:36:48.9 -14:55:21 14.8 116 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:06:22 UT
Marc W. Buie, Southwest Research Institute