Event between (470443) 07XV50 and star GA1220:01350215 with event index number of 232205
Geocentric closest approach at 2019/12/28 21:13:36 UTC
J2000 position of star is 04:59:38.9 +32:41:36
Equinox of date position of star is 05:00:54.6 +32:43:16
Stellar brightness G=16.6,
use SENSEUP=128
Star is 129 degrees from the moon.
Moon is 7% illuminated.
TNO apparent brightness V=21.1
TNO is 46.9 AU from the Sun
and 46.0 AU from the Earth.
The TNO is moving 24.6
km/sec on the sky relative to the star, or,
2.6 arcsec/hr.
The 1-sigma error in the time of the event is 232 seconds.
The 1-sigma cross-track error in the shadow position is
3557 km.
The TNO has an absolute magnitude Hv=4.4
Diameter=794.4 km assuming a 5% albedo -- 32.4 sec chord
Diameter=324.3 km assuming a 30% albedo -- 13.2 sec chord
Dynamical classification is SCATEXTD
Star training set for 470443, (2019/12/28 21:14UT) Object RA Dec mag sep mel Aldebaran 04:37:04.2 +16:32:52 0.8 17.05 121 3Iot Aur 04:58:17.9 +33:11:45 2.7 0.73 128 PPM 069666 04:50:36.9 +32:37:17 6.0 2.18 127 PPM 069754 04:56:48.4 +32:48:52 8.2 0.88 128 PPM 069799 05:00:00.3 +32:25:58 9.0 0.35 128 PPM 069805 05:00:32.6 +32:36:56 10.7 0.14 129 470443 05:00:57.0 +32:43:19 16.6 129 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 470443, (2019/12/28 21:14UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 17.05 121 3Iot Aur 04:56:59.6 +33:09:58 2.7 0.73 128 PPM 069666 04:49:19.1 +32:35:16 6.0 2.18 127 PPM 069754 04:55:30.4 +32:47:02 8.2 0.88 128 PPM 069799 04:58:42.5 +32:24:13 9.0 0.35 128 PPM 069805 04:59:14.6 +32:35:12 10.7 0.14 129 470443 04:59:38.9 +32:41:36 16.6 129 Positions are for J2000
Event circumstances last updated at 2019/05/23 22:44:02 UT
Marc W. Buie, Southwest Research Institute