Event between 09YG19 and star GA1100:00930415 with event index number of 183519
Geocentric closest approach at 2019/04/06 12:13:54 UTC
J2000 position of star is 05:10:54.4 +21:16:39
Equinox of date position of star is 05:12:03.0 +21:17:59
Stellar brightness G=16.7,
use SENSEUP=128
Star is 49 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=21.9
TNO is 35.3 AU from the Sun
and 35.7 AU from the Earth.
The TNO is moving 19.1
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 104 seconds.
The 1-sigma cross-track error in the shadow position is
1367 km.
The TNO has an absolute magnitude Hv=6.2
Diameter=350.0 km assuming a 5% albedo -- 18.3 sec chord
Diameter=142.9 km assuming a 30% albedo -- 7.5 sec chord
Dynamical classification is 5:2EEE
Star training set for 09YG19, (2019/04/06 12:14UT) Object RA Dec mag sep mel Aldebaran 04:37:01.7 +16:32:47 0.8 9.55 40 Alnath 05:27:30.7 +28:37:19 1.6 8.11 54 108 Tau 05:16:37.2 +22:18:19 6.2 1.46 50 PPM 094144 05:11:56.2 +20:35:30 8.2 0.71 49 PPM 094129 05:11:08.0 +20:57:29 9.7 0.40 49 PPM 094146 05:12:01.5 +21:22:02 11.4 0.07 49 09YG19 05:12:03.5 +21:18:00 16.7 49 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 09YG19, (2019/04/06 12:14UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 9.55 40 Alnath 05:26:17.5 +28:36:23 1.6 8.11 54 108 Tau 05:15:27.6 +22:17:05 6.2 1.46 50 PPM 094144 05:10:47.6 +20:34:09 8.2 0.71 49 PPM 094129 05:09:59.2 +20:56:06 9.7 0.40 49 PPM 094146 05:10:52.5 +21:20:41 11.4 0.07 49 09YG19 05:10:54.4 +21:16:39 16.7 49 Positions are for J2000
Event circumstances last updated at 2019/02/12 07:09:45 UT
Marc W. Buie, Southwest Research Institute