Event between 20YR3 and star GA1200:01636768 with event index number of 2179232
Geocentric closest approach at 2022/10/24 19:39:10 UTC
J2000 position of star is 05:28:18.9 +31:19:46
Equinox of date position of star is 05:29:47.2 +31:20:47
Stellar brightness G=16.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 120 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=21.8
TNO is 17.1 AU from the Sun
and 16.5 AU from the Earth.
The TNO is moving 28.6
km/sec on the sky relative to the star, or,
8.6 arcsec/hr.
The 1-sigma error in the time of the event is 50 seconds.
The 1-sigma cross-track error in the shadow position is
903 km.
The TNO has an absolute magnitude Hv=9.3
Diameter=83.9 km assuming a 5% albedo -- 2.9 sec chord
Diameter=34.3 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
Star training set for 20YR3, (2022/10/24 19:39UT) Object RA Dec mag sep mel Aldebaran 04:37:13.9 +16:33:12 0.8 19.02 134 Alnath 05:27:44.2 +28:37:29 1.6 2.76 120 25Chi Aur 05:34:12.9 +32:12:24 4.8 1.27 118 PPM 070525 05:34:28.6 +31:53:10 7.5 1.13 118 PPM 070380 05:28:57.2 +31:25:01 9.0 0.19 120 20YR3 05:29:47.4 +31:20:48 16.2 119 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 20YR3, (2022/10/24 19:39UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 19.02 134 Alnath 05:26:17.6 +28:36:23 1.6 2.76 120 25Chi Aur 05:32:43.7 +32:11:31 4.8 1.27 118 PPM 070525 05:32:59.7 +31:52:18 7.5 1.13 118 PPM 070380 05:27:28.6 +31:23:57 9.0 0.19 120 20YR3 05:28:18.9 +31:19:46 16.2 120 Positions are for J2000
Event circumstances last updated at 2022/10/02 04:09:04 UT
Marc W. Buie, Southwest Research Institute