Event between (468861) 13LU28 and star UC4-602-052871 with event index number of 129949
Geocentric closest approach at 2017/12/19 18:37:59 UTC
J2000 position of star is 15:41:03.9 +30:12:29
Equinox of date position of star is 15:41:47.5 +30:09:05
Stellar brightness R=13.6,
use SENSEUP=64
Star is 70 degrees from the moon.
Moon is 2% illuminated.
TNO apparent brightness V=20.2
TNO is 15.3 AU from the Sun
and 15.8 AU from the Earth.
The TNO is moving 24.5
km/sec on the sky relative to the star, or,
7.7 arcsec/hr.
The 1-sigma error in the time of the event is 77 seconds.
The 1-sigma cross-track error in the shadow position is
2238 km.
The TNO has an absolute magnitude Hv=8.0
Diameter=151.4 km assuming a 5% albedo -- 6.2 sec chord
Diameter=61.8 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is CENTAURR
Star training set for 468861, (2017/12/19 18:38UT) Object RA Dec mag sep mel Arcturus 14:16:28.9 +19:05:22 0.0 22.26 80 Alphekka 15:35:27.0 +26:39:19 2.2 3.76 68 4The CrB 15:33:39.3 +31:17:57 4.1 2.09 72 PPM 078724 15:38:37.4 +30:02:44 8.2 0.69 70 PPM 104226 15:41:29.2 +29:54:56 8.6 0.24 69 468861 15:41:47.7 +30:09:04 13.6 69 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 468861, (2017/12/19 18:38UT) Object RA Dec mag sep mel Arcturus 14:15:38.3 +19:10:21 0.0 22.26 80 Alphekka 15:34:41.4 +26:42:51 2.2 3.76 68 4The CrB 15:32:55.8 +31:21:33 4.1 2.09 72 PPM 078724 15:37:53.4 +30:06:13 8.2 0.69 70 PPM 104226 15:40:45.3 +29:58:21 8.6 0.24 69 468861 15:41:03.9 +30:12:29 13.6 69 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:06:52 UT
Marc W. Buie, Southwest Research Institute