Event between 20YR3 and star GA1220:01806471 with event index number of 2179136
Geocentric closest approach at 2022/01/28 13:19:09 UTC
J2000 position of star is 05:28:42.3 +32:01:18
Equinox of date position of star is 05:30:07.9 +32:02:16
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 171 degrees from the moon.
Moon is 18% illuminated.
TNO apparent brightness V=21.9
TNO is 17.4 AU from the Sun
and 16.7 AU from the Earth.
The TNO is moving 31.6
km/sec on the sky relative to the star, or,
9.4 arcsec/hr.
The 1-sigma error in the time of the event is 52 seconds.
The 1-sigma cross-track error in the shadow position is
725 km.
The TNO has an absolute magnitude Hv=9.3
Diameter=83.9 km assuming a 5% albedo -- 2.7 sec chord
Diameter=34.3 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
Star training set for 20YR3, (2022/01/28 13:19UT) Object RA Dec mag sep mel Aldebaran 04:37:11.4 +16:33:07 0.8 19.59 169 Alnath 05:27:41.4 +28:37:26 1.6 3.45 174 25Chi Aur 05:34:10.0 +32:12:22 4.8 0.87 170 PPM 070525 05:34:25.8 +31:53:08 7.5 0.92 171 PPM 070377 05:28:51.8 +32:06:14 9.5 0.28 171 20YR3 05:30:08.5 +32:02:16 16.5 171 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, (2022/01/28 13:19UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 19.59 169 Alnath 05:26:17.6 +28:36:23 1.6 3.45 174 25Chi Aur 05:32:43.7 +32:11:31 4.8 0.87 170 PPM 070525 05:32:59.7 +31:52:18 7.5 0.92 171 PPM 070377 05:27:25.6 +32:05:13 9.5 0.28 171 20YR3 05:28:42.3 +32:01:18 16.5 171 Positions are for J2000
Event circumstances last updated at 2021/12/05 02:03:22 UT
Marc W. Buie, Southwest Research Institute