Event between (523773) 14XS40 and star GA0840:03691944 with event index number of 347776
Geocentric closest approach at 2018/12/05 02:22:18 UTC
J2000 position of star is 08:57:47.1 -05:36:51
Equinox of date position of star is 08:58:43.2 -05:41:16
Stellar brightness G=15.2,
use SENSEUP=128
Star is 90 degrees from the moon.
Moon is 5% illuminated.
TNO apparent brightness V=21.2
TNO is 36.9 AU from the Sun
and 36.5 AU from the Earth.
The TNO is moving 11.5
km/sec on the sky relative to the star, or,
1.6 arcsec/hr.
The 1-sigma error in the time of the event is 163 seconds.
The 1-sigma cross-track error in the shadow position is
1384 km.
The TNO has an absolute magnitude Hv=5.4
Diameter=501.2 km assuming a 5% albedo -- 43.6 sec chord
Diameter=204.6 km assuming a 30% albedo -- 17.8 sec chord
Dynamical classification is SCATEXTD
Star training set for 523773, (2018/12/05 02:22UT) Object RA Dec mag sep mel Regulus 10:09:22.7 +11:52:26 1.3 24.84 77 Alphard 09:28:31.1 -08:44:29 2.0 7.99 82 PPM 191823 08:55:13.9 -05:30:26 6.4 0.89 91 PPM 191884 08:58:55.1 -04:56:01 7.1 0.76 90 PPM 191875 08:58:31.1 -05:45:15 9.2 0.08 90 523773 08:58:43.6 -05:41:17 15.2 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 523773, (2018/12/05 02:22UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 24.84 77 Alphard 09:27:35.2 -08:39:31 2.0 7.99 82 PPM 191823 08:54:17.4 -05:26:04 6.4 0.89 91 PPM 191884 08:57:58.5 -04:51:35 7.1 0.76 90 PPM 191875 08:57:34.7 -05:40:49 9.2 0.08 90 523773 08:57:47.1 -05:36:51 15.2 90 Positions are for J2000
Event circumstances last updated at 2018/10/24 21:08:15 UT
Marc W. Buie, Southwest Research Institute