Event between (54598) Bienor and star GA1300:01233803 with event index number of 149117
Geocentric closest approach at 2018/08/19 20:43:03 UTC
J2000 position of star is 03:43:25.0 +40:42:09
Equinox of date position of star is 03:44:39.2 +40:45:35
Stellar brightness G=16.4,
use SENSEUP=128
Star is 153 degrees from the moon.
Moon is 65% illuminated.
TNO apparent brightness V=19.6
TNO is 14.9 AU from the Sun
and 14.9 AU from the Earth.
The TNO is moving 15.2
km/sec on the sky relative to the star, or,
5.0 arcsec/hr.
The 1-sigma error in the time of the event is 47 seconds.
The 1-sigma cross-track error in the shadow position is
837 km.
The TNO has an absolute magnitude Hv=7.5
Diameter=190.6 km assuming a 5% albedo -- 12.6 sec chord
Diameter=77.8 km assuming a 30% albedo -- 5.1 sec chord
Dynamical classification is CENTAURR
Star training set for 54598, (2018/08/19 20:43UT) Object RA Dec mag sep mel Aldebaran 04:36:59.5 +16:32:43 0.8 26.73 175 Algol 03:09:23.3 +41:01:34 2.1 6.67 148 41Nu Per 03:46:28.0 +42:38:09 3.8 1.91 152 PPM 046436 03:42:11.3 +41:14:54 7.1 0.68 152 PPM 046452 03:43:14.7 +40:56:25 9.2 0.32 153 PPM 046465 03:44:45.3 +40:41:46 10.7 0.07 153 54598 03:44:40.0 +40:45:38 16.4 153 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 54598, (2018/08/19 20:43UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 26.73 175 Algol 03:08:10.1 +40:57:20 2.1 6.67 148 41Nu Per 03:45:11.6 +42:34:43 3.8 1.91 152 PPM 046436 03:40:56.1 +41:11:21 7.1 0.68 152 PPM 046452 03:41:59.6 +40:52:54 9.2 0.32 153 PPM 046465 03:43:30.2 +40:38:17 10.7 0.07 153 54598 03:43:25.0 +40:42:09 16.4 153 Positions are for J2000
Event circumstances last updated at 2018/06/05 16:20:41 UT
Marc W. Buie, Southwest Research Institute