Event between 07TV431 and star GA1100:00480313 with event index number of 1035361
Geocentric closest approach at 2021/01/16 21:44:47 UTC
J2000 position of star is 03:57:06.4 +21:02:32
Equinox of date position of star is 03:58:20.1 +21:06:06
Stellar brightness G=15.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 79 degrees from the moon.
Moon is 15% illuminated.
TNO apparent brightness V=24.4
TNO is 30.5 AU from the Sun
and 29.9 AU from the Earth.
The TNO is moving 11.4
km/sec on the sky relative to the star, or,
1.9 arcsec/hr.
The 1-sigma error in the time of the event is 95 seconds.
The 1-sigma cross-track error in the shadow position is
1085 km.
The TNO has an absolute magnitude Hv=9.4
Diameter=80.9 km assuming a 5% albedo -- 7.1 sec chord
Diameter=33.0 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is 3:2E
Star training set for 07TV431, (2021/01/16 21:45UT) Object RA Dec mag sep mel Aldebaran 04:37:07.8 +16:33:00 0.8 10.24 87 44Zet Per 03:55:27.6 +31:56:40 2.8 10.86 82 32 Tau 03:58:06.9 +22:32:13 5.6 1.44 79 PPM 093159 04:01:54.5 +20:28:16 8.4 1.05 80 PPM 093078 03:57:20.4 +20:49:54 8.8 0.36 79 PPM 093116 03:59:13.7 +21:07:03 11.4 0.21 79 07TV431 03:58:20.4 +21:06:06 15.9 79 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 07TV431, (2021/01/16 21:45UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 10.24 87 44Zet Per 03:54:07.9 +31:53:01 2.8 10.86 82 32 Tau 03:56:52.2 +22:28:38 5.6 1.44 79 PPM 093159 04:00:40.7 +20:24:47 8.4 1.05 80 PPM 093078 03:56:06.6 +20:46:18 8.8 0.36 79 PPM 093116 03:57:59.7 +21:03:30 11.4 0.21 79 07TV431 03:57:06.4 +21:02:32 15.9 79 Positions are for J2000
Event circumstances last updated at 2020/12/14 19:23:45 UT
Marc W. Buie, Southwest Research Institute