Event between 12XW159 and star GA0940:00936753 with event index number of 1559346
Geocentric closest approach at 2020/04/14 04:55:54 UTC
J2000 position of star is 05:49:00.9 +05:41:30
Equinox of date position of star is 05:50:05.7 +05:41:49
Stellar brightness G=11.6,
use SENSEUP=8
Star is 154 degrees from the moon.
Moon is 58% illuminated.
TNO apparent brightness V=25.2
TNO is 31.8 AU from the Sun
and 32.2 AU from the Earth.
The TNO is moving 20.9
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 160 seconds.
The 1-sigma cross-track error in the shadow position is
1998 km.
The TNO has an absolute magnitude Hv=10.0
Diameter=204.2 km assuming a 5% albedo -- 2.9 sec chord
Diameter=83.4 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is 3:2E
Star training set for 12XW159, (2020/04/14 04:56UT) Object RA Dec mag sep mel Betelgeuse 05:56:16.2 +07:24:33 0.4 2.30 156 Bellatrix 05:26:13.2 +06:21:59 1.6 5.97 150 52 Ori 05:49:05.6 +06:27:35 5.5 0.80 154 PPM 149538 05:51:28.6 +04:57:40 7.0 0.81 153 PPM 149471 05:48:46.0 +05:42:06 9.7 0.33 153 PPM 149488 05:49:31.8 +05:28:30 11.0 0.26 153 12XW159 05:50:06.0 +05:41:49 11.6 154 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 12XW159, (2020/04/14 04:56UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 2.30 156 Bellatrix 05:25:07.8 +06:20:58 1.6 5.97 150 52 Ori 05:48:00.2 +06:27:15 5.5 0.80 154 PPM 149538 05:50:23.9 +04:57:24 7.0 0.81 153 PPM 149471 05:47:41.0 +05:41:45 9.7 0.33 153 PPM 149488 05:48:26.9 +05:28:10 11.0 0.26 153 12XW159 05:49:00.9 +05:41:30 11.6 154 Positions are for J2000
Event circumstances last updated at 2020/03/10 21:18:01 UT
Marc W. Buie, Southwest Research Institute