Event between 10WG9 and star UC4-528-017544 with event index number of 109163
Geocentric closest approach at 2018/02/11 19:06:49 UTC
J2000 position of star is 05:48:48.1 +15:33:20
Equinox of date position of star is 05:49:49.8 +15:33:36
Stellar brightness R=13.5,
use SENSEUP=32
Star is 168 degrees from the moon.
Moon is 15% illuminated.
TNO apparent brightness V=21.9
TNO is 23.1 AU from the Sun
and 22.6 AU from the Earth.
The TNO is moving 17.9
km/sec on the sky relative to the star, or,
3.9 arcsec/hr.
The 1-sigma error in the time of the event is 256 seconds.
The 1-sigma cross-track error in the shadow position is
5415 km.
The TNO has an absolute magnitude Hv=8.1
Diameter=146.6 km assuming a 5% albedo -- 8.2 sec chord
Diameter=59.8 km assuming a 30% albedo -- 3.3 sec chord
Dynamical classification is CENTAURR
Star training set for 10WG9, (2018/02/11 19:07UT) Object RA Dec mag sep mel Betelgeuse 05:56:09.2 +07:24:32 0.4 8.30 164 Bellatrix 05:26:06.2 +06:21:53 1.6 10.88 158 131 Tau 05:48:15.1 +14:29:37 5.7 1.13 167 PPM 121449 05:51:04.9 +16:01:02 8.3 0.55 169 PPM 121450 05:51:06.3 +15:40:13 9.2 0.32 168 10WG9 05:49:50.5 +15:33:37 13.5 168 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 10WG9, (2018/02/11 19:07UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 8.30 164 Bellatrix 05:25:07.8 +06:20:58 1.6 10.88 158 131 Tau 05:47:13.1 +14:29:18 5.7 1.13 167 PPM 121449 05:50:02.3 +16:00:47 8.3 0.55 169 PPM 121450 05:50:03.8 +15:39:58 9.2 0.32 168 10WG9 05:48:48.1 +15:33:20 13.5 168 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:15:51 UT
Marc W. Buie, Southwest Research Institute