Event between (470308) 07JH43 and star GA0640:08576064 with event index number of 1054720
Geocentric closest approach at 2021/02/09 00:51:10 UTC
J2000 position of star is 16:47:51.4 -24:56:50
Equinox of date position of star is 16:49:08.5 -24:58:59
Stellar brightness G=15.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 32 degrees from the moon.
Moon is 9% illuminated.
TNO apparent brightness V=20.7
TNO is 40.6 AU from the Sun
and 40.9 AU from the Earth.
The TNO is moving 16.9
km/sec on the sky relative to the star, or,
2.1 arcsec/hr.
The 1-sigma error in the time of the event is 113 seconds.
The 1-sigma cross-track error in the shadow position is
1698 km.
The TNO has an absolute magnitude Hv=4.5
Diameter=758.6 km assuming a 5% albedo -- 44.8 sec chord
Diameter=309.7 km assuming a 30% albedo -- 18.3 sec chord
Dynamical classification is SCATNEAR
Star training set for 470308, (2021/02/09 00:51UT) Object RA Dec mag sep mel Antares 16:30:42.3 -26:28:37 0.9 4.41 36 23Tau Sco 16:37:12.0 -28:15:29 2.8 4.22 35 26 Oph 17:01:27.3 -25:01:10 5.8 2.79 30 PPM 266013 16:50:52.7 -25:06:25 7.6 0.41 32 PPM 265971 16:48:58.3 -25:02:57 9.4 0.08 32 470308 16:49:08.8 -24:59:00 15.3 32 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 470308, (2021/02/09 00:51UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 4.41 36 23Tau Sco 16:35:52.9 -28:12:58 2.8 4.22 35 26 Oph 17:00:09.6 -24:59:22 5.8 2.79 30 PPM 266013 16:49:35.2 -25:04:18 7.6 0.41 32 PPM 265971 16:47:40.9 -25:00:47 9.4 0.08 32 470308 16:47:51.4 -24:56:50 15.3 32 Positions are for J2000
Event circumstances last updated at 2021/01/18 21:25:43 UT
Marc W. Buie, Southwest Research Institute