Event between (470443) 07XV50 and star GA1220:01516708 with event index number of 2230616
Geocentric closest approach at 2021/12/05 23:16:57 UTC
J2000 position of star is 05:11:17.5 +33:42:34
Equinox of date position of star is 05:12:43.5 +33:44:04
Stellar brightness G=14.3,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 161 degrees from the moon.
Moon is 4% illuminated.
TNO apparent brightness V=21.3
TNO is 47.0 AU from the Sun
and 46.1 AU from the Earth.
The TNO is moving 26.2
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 180 seconds.
The 1-sigma cross-track error in the shadow position is
2783 km.
The TNO has an absolute magnitude Hv=4.6
Diameter=717.8 km assuming a 5% albedo -- 27.4 sec chord
Diameter=293.0 km assuming a 30% albedo -- 11.2 sec chord
Dynamical classification is SCATEXTD
Star training set for 470443, (2021/12/05 23:17UT) Object RA Dec mag sep mel Aldebaran 04:37:10.9 +16:33:06 0.8 18.95 151 3Iot Aur 04:58:25.5 +33:11:56 2.7 3.03 158 14 Aur 05:16:50.2 +32:42:39 5.2 1.34 162 PPM 070028 05:13:35.6 +32:55:12 7.9 0.83 161 PPM 070018 05:12:54.5 +34:07:46 10.0 0.40 161 PPM 070027 05:13:23.6 +33:48:51 10.2 0.16 161 470443 05:12:44.1 +33:44:05 14.3 161 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, (2021/12/05 23:17UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 18.95 151 3Iot Aur 04:56:59.6 +33:09:58 2.7 3.03 158 14 Aur 05:15:24.3 +32:41:15 5.2 1.34 162 PPM 070028 05:12:09.6 +32:53:42 7.9 0.83 161 PPM 070018 05:11:27.6 +34:06:15 10.0 0.40 161 PPM 070027 05:11:57.0 +33:47:21 10.2 0.16 161 470443 05:11:17.5 +33:42:34 14.3 161 Positions are for J2000
Event circumstances last updated at 2021/10/11 01:43:34 UT
Marc W. Buie, Southwest Research Institute