Event between (538690) 16FP59 and star GA0820:04223455 with event index number of 1624363
Geocentric closest approach at 2020/03/27 18:15:46 UTC
J2000 position of star is 12:23:35.9 -07:10:57
Equinox of date position of star is 12:24:36.2 -07:17:26
Stellar brightness G=16.8,
use SENSEUP=128
Star is 143 degrees from the moon.
Moon is 10% illuminated.
TNO apparent brightness V=22.6
TNO is 47.8 AU from the Sun
and 46.8 AU from the Earth.
The TNO is moving 25.6
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 115 seconds.
The 1-sigma cross-track error in the shadow position is
2033 km.
The TNO has an absolute magnitude Hv=5.8
Diameter=416.9 km assuming a 5% albedo -- 16.3 sec chord
Diameter=170.2 km assuming a 30% albedo -- 6.6 sec chord
Dynamical classification is CLASSICAL
Star training set for 538690, (2020/03/27 18:16UT) Object RA Dec mag sep mel Spica 13:26:15.7 -11:15:59 1.0 15.71 159 4Gam Crv 12:16:51.0 -17:39:15 2.6 10.53 142 PPM 195518 12:28:54.0 -04:43:37 6.2 2.78 144 PPM 195429 12:24:12.1 -07:24:40 7.1 0.16 143 PPM 195436 12:24:27.7 -07:09:55 9.3 0.14 143 538690 12:24:38.5 -07:17:41 16.8 143 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 538690, (2020/03/27 18:16UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 15.71 159 4Gam Crv 12:15:48.2 -17:32:31 2.6 10.53 142 PPM 195518 12:27:51.4 -04:36:55 6.2 2.78 144 PPM 195429 12:23:09.5 -07:17:57 7.1 0.16 143 PPM 195436 12:23:25.1 -07:03:12 9.3 0.14 143 538690 12:23:35.9 -07:10:57 16.8 143 Positions are for J2000
Event circumstances last updated at 2019/07/02 02:34:26 UT
Marc W. Buie, Southwest Research Institute