Event between 12WD37 and star GA1220:03377832 with event index number of 1558826
Geocentric closest approach at 2020/03/21 17:50:06 UTC
J2000 position of star is 09:01:31.3 +33:22:03
Equinox of date position of star is 09:02:45.8 +33:17:14
Stellar brightness G=16.8,
use SENSEUP=128
Star is 153 degrees from the moon.
Moon is 6% illuminated.
TNO apparent brightness V=25.7
TNO is 36.0 AU from the Sun
and 35.4 AU from the Earth.
The TNO is moving 14.2
km/sec on the sky relative to the star, or,
2.0 arcsec/hr.
The 1-sigma error in the time of the event is 236 seconds.
The 1-sigma cross-track error in the shadow position is
1384 km.
The TNO has an absolute magnitude Hv=10.0
Diameter=261.8 km assuming a 5% albedo -- 4.2 sec chord
Diameter=106.9 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is SCATEXTD
Star training set for 12WD37, (2020/03/21 17:50UT) Object RA Dec mag sep mel Pollux 07:46:33.0 +27:58:33 1.1 17.20 141 66 Cnc 09:02:38.2 +32:10:20 5.9 1.12 154 PPM 074199 09:04:29.4 +32:48:02 7.7 0.61 154 PPM 074142 09:00:21.0 +33:34:18 9.5 0.58 153 PPM 074184 09:03:01.8 +33:16:33 10.9 0.06 153 12WD37 09:02:45.9 +33:17:14 16.8 154 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 12WD37, (2020/03/21 17:50UT) Object RA Dec mag sep mel Pollux 07:45:18.0 +28:01:33 1.1 17.20 141 66 Cnc 09:01:24.1 +32:15:09 5.9 1.12 154 PPM 074199 09:03:15.1 +32:52:53 7.7 0.61 154 PPM 074142 08:59:06.1 +33:39:04 9.5 0.58 153 PPM 074184 09:01:47.2 +33:21:23 10.9 0.06 153 12WD37 09:01:31.3 +33:22:03 16.8 153 Positions are for J2000
Event circumstances last updated at 2020/03/10 21:11:07 UT
Marc W. Buie, Southwest Research Institute