Event between (493480) 14YZ49 and star UC4-511-052788 with event index number of 194075
Geocentric closest approach at 2018/02/15 14:30:37 UTC
J2000 position of star is 12:23:07.0 +12:03:13
Equinox of date position of star is 12:24:01.6 +11:57:16
Stellar brightness R=14.0,
use SENSEUP=64
Star is 142 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=21.3
TNO is 39.5 AU from the Sun
and 38.7 AU from the Earth.
The TNO is moving 20.7
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 116 seconds.
The 1-sigma cross-track error in the shadow position is
1922 km.
The TNO has an absolute magnitude Hv=5.3
Diameter=524.8 km assuming a 5% albedo -- 25.3 sec chord
Diameter=214.3 km assuming a 30% albedo -- 10.3 sec chord
Dynamical classification is SCATEXTD
Star training set for 493480, (2018/02/15 14:31UT) Object RA Dec mag sep mel Spica 13:26:09.0 -11:15:19 1.0 27.86 120 Denebola 11:49:59.0 +14:28:14 2.1 8.66 150 12 Vir 12:14:21.3 +10:09:41 5.8 2.98 144 PPM 128969 12:21:00.0 +13:45:15 7.8 1.95 143 PPM 129016 12:24:37.7 +11:49:12 9.7 0.20 141 493480 12:24:02.2 +11:57:11 14.0 141 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 493480, (2018/02/15 14:31UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 27.86 120 Denebola 11:49:03.0 +14:34:17 2.1 8.66 150 12 Vir 12:13:25.8 +10:15:44 5.8 2.98 144 PPM 128969 12:20:04.8 +13:51:17 7.8 1.95 143 PPM 129016 12:23:42.5 +11:55:13 9.7 0.20 141 493480 12:23:07.0 +12:03:13 14.0 142 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:16:45 UT
Marc W. Buie, Southwest Research Institute