Event between (119979) 02WC19 and star UC4-550-019593 with event index number of 175355
Geocentric closest approach at 2019/01/24 23:35:29 UTC
J2000 position of star is 05:48:50.2 +19:57:15
Equinox of date position of star is 05:49:54.1 +19:57:32
Stellar brightness R=13.0,
use SENSEUP=32
Star is 90 degrees from the moon.
Moon is 80% illuminated.
TNO apparent brightness V=21.0
TNO is 40.3 AU from the Sun
and 39.5 AU from the Earth.
The TNO is moving 19.5
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 440 seconds.
The 1-sigma cross-track error in the shadow position is
2151 km.
The TNO has an absolute magnitude Hv=4.9
Diameter=631.0 km assuming a 5% albedo -- 32.4 sec chord
Diameter=257.6 km assuming a 30% albedo -- 13.2 sec chord
Dynamical classification is 2:1E
Star training set for 119979, (2019/01/24 23:35UT) Object RA Dec mag sep mel Betelgeuse 05:56:12.3 +07:24:33 0.4 12.64 90 Alnath 05:27:29.9 +28:37:19 1.6 10.06 94 PPM 121513 05:53:31.2 +19:52:16 6.4 0.84 89 PPM 121502 05:52:59.7 +19:31:29 7.1 0.83 90 PPM 121423 05:49:58.2 +19:55:49 8.8 0.03 90 119979 05:49:58.1 +19:57:33 13.0 90 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 119979, (2019/01/24 23:35UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 12.64 90 Alnath 05:26:17.5 +28:36:24 1.6 10.06 94 PPM 121513 05:52:23.4 +19:52:04 6.4 0.84 89 PPM 121502 05:51:52.1 +19:31:17 7.1 0.83 90 PPM 121423 05:48:50.4 +19:55:32 8.8 0.03 90 119979 05:48:50.2 +19:57:15 13.0 90 Positions are for J2000
Event circumstances last updated at 2017/12/17 17:05:39 UT
Marc W. Buie, Southwest Research Institute