Event between 01VN71 and star GA1220:03008708 with event index number of 1022430
Geocentric closest approach at 2020/12/17 22:17:37 UTC
J2000 position of star is 07:01:33.6 +33:14:03
Equinox of date position of star is 07:02:55.7 +33:12:10
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 154 degrees from the moon.
Moon is 13% illuminated.
TNO apparent brightness V=23.7
TNO is 30.7 AU from the Sun
and 29.7 AU from the Earth.
The TNO is moving 23.5
km/sec on the sky relative to the star, or,
3.9 arcsec/hr.
The 1-sigma error in the time of the event is 46 seconds.
The 1-sigma cross-track error in the shadow position is
1078 km.
The TNO has an absolute magnitude Hv=8.8
Diameter=103.8 km assuming a 5% albedo -- 4.4 sec chord
Diameter=42.4 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is 3:2E
Star training set for 01VN71, (2020/12/17 22:18UT) Object RA Dec mag sep mel Pollux 07:46:35.7 +27:58:26 1.1 10.75 164 PPM 072472 07:09:35.6 +33:47:51 6.3 1.51 155 PPM 072350 07:03:05.3 +33:39:15 7.8 0.45 153 PPM 072318 07:01:35.7 +33:21:32 10.0 0.32 153 PPM 072335 07:02:26.0 +33:04:40 10.1 0.16 153 01VN71 07:02:55.7 +33:12:10 16.8 154 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 01VN71, (2020/12/17 22:18UT) Object RA Dec mag sep mel Pollux 07:45:18.0 +28:01:33 1.1 10.75 164 PPM 072472 07:08:13.2 +33:49:56 6.3 1.51 155 PPM 072350 07:01:42.9 +33:41:07 7.8 0.45 153 PPM 072318 07:00:13.4 +33:23:22 10.0 0.32 153 PPM 072335 07:01:03.9 +33:06:31 10.1 0.16 153 01VN71 07:01:33.6 +33:14:03 16.8 153 Positions are for J2000
Event circumstances last updated at 2020/12/12 21:00:17 UT
Marc W. Buie, Southwest Research Institute