Event between (506439) 00YB2 and star GA1100:01474981 with event index number of 317574
Geocentric closest approach at 2020/09/21 02:16:09 UTC
J2000 position of star is 05:50:03.8 +20:30:51
Equinox of date position of star is 05:51:14.5 +20:31:07
Stellar brightness G=16.1,
use SENSEUP=128
Star is 142 degrees from the moon.
Moon is 19% illuminated.
TNO apparent brightness V=22.8
TNO is 39.0 AU from the Sun
and 39.0 AU from the Earth.
The TNO is moving 4.1
km/sec on the sky relative to the star, or,
0.5 arcsec/hr.
The 1-sigma error in the time of the event is 1898 seconds.
The 1-sigma cross-track error in the shadow position is
2099 km.
The TNO has an absolute magnitude Hv=6.7
Diameter=275.4 km assuming a 5% albedo -- 66.8 sec chord
Diameter=112.4 km assuming a 30% albedo -- 27.3 sec chord
Dynamical classification is CLASSICAL
Star training set for 506439, (2020/09/21 02:16UT) Object RA Dec mag sep mel Betelgeuse 05:56:17.7 +07:24:33 0.4 13.17 139 Alnath 05:27:36.2 +28:37:23 1.6 9.73 146 PPM 121513 05:53:37.1 +19:52:17 6.4 0.85 141 PPM 095000 05:53:37.5 +20:41:59 8.2 0.57 141 PPM 094952 05:51:43.7 +20:26:55 8.9 0.12 142 506439 05:51:17.8 +20:31:08 16.1 142 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 506439, (2020/09/21 02:16UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 13.17 139 Alnath 05:26:17.5 +28:36:23 1.6 9.73 146 PPM 121513 05:52:23.4 +19:52:04 6.4 0.85 141 PPM 095000 05:52:23.3 +20:41:46 8.2 0.57 141 PPM 094952 05:50:29.7 +20:26:39 8.9 0.12 142 506439 05:50:03.8 +20:30:51 16.1 142 Positions are for J2000
Event circumstances last updated at 2019/10/16 21:25:45 UT
Marc W. Buie, Southwest Research Institute