Event between 10TT191 and star UC4-560-010175 with event index number of 157239
Geocentric closest approach at 2018/10/31 01:40:00 UTC
J2000 position of star is 04:33:16.3 +21:57:56
Equinox of date position of star is 04:34:23.6 +22:00:14
Stellar brightness R=16.5,
use SENSEUP=128
Star is 49 degrees from the moon.
Moon is 57% illuminated.
TNO apparent brightness V=22.9
TNO is 32.2 AU from the Sun
and 31.3 AU from the Earth.
The TNO is moving 20.5
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 483 seconds.
The 1-sigma cross-track error in the shadow position is
1390 km.
The TNO has an absolute magnitude Hv=7.8
Diameter=164.4 km assuming a 5% albedo -- 8.0 sec chord
Diameter=67.1 km assuming a 30% albedo -- 3.3 sec chord
Dynamical classification is 1:1
Star training set for 10TT191, (2018/10/31 01:40UT) Object RA Dec mag sep mel Aldebaran 04:37:00.2 +16:32:44 0.8 5.49 50 3Iot Aur 04:58:13.4 +33:11:39 2.7 12.37 44 PPM 093535 04:29:08.0 +21:39:37 5.9 1.27 51 PPM 093627 04:37:24.9 +21:43:34 8.5 0.75 49 PPM 093580 04:33:02.0 +21:40:30 9.0 0.46 50 PPM 093603 04:35:38.1 +22:00:18 11.6 0.29 49 10TT191 04:34:23.6 +22:00:14 16.5 49 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 10TT191, (2018/10/31 01:40UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 5.49 50 3Iot Aur 04:56:59.6 +33:09:58 2.7 12.37 44 PPM 093535 04:28:00.9 +21:37:11 5.9 1.27 51 PPM 093627 04:36:17.7 +21:41:20 8.5 0.75 49 PPM 093580 04:31:54.8 +21:38:09 9.0 0.46 50 PPM 093603 04:34:30.7 +21:58:01 11.6 0.29 49 10TT191 04:33:16.3 +21:57:56 16.5 49 Positions are for J2000
Event circumstances last updated at 2018/10/22 18:19:17 UT
Marc W. Buie, Southwest Research Institute