Event between (469750) 05PU21 and star GA0920:00045198 with event index number of 2255749
Geocentric closest approach at 2022/01/02 16:09:47 UTC
J2000 position of star is 00:29:33.1 +03:30:33
Equinox of date position of star is 00:30:40.6 +03:37:48
Stellar brightness G=15.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 87 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=22.1
TNO is 35.1 AU from the Sun
and 35.1 AU from the Earth.
The TNO is moving 8.2
km/sec on the sky relative to the star, or,
1.2 arcsec/hr.
The 1-sigma error in the time of the event is 183 seconds.
The 1-sigma cross-track error in the shadow position is
1305 km.
The TNO has an absolute magnitude Hv=6.5
Diameter=303.4 km assuming a 5% albedo -- 37.2 sec chord
Diameter=123.9 km assuming a 30% albedo -- 15.2 sec chord
Dynamical classification is CENTAURR
Star training set for 469750, (2022/01/02 16:09UT) Object RA Dec mag sep mel Fomalhaut 22:58:51.7 -29:30:19 1.2 39.77 55 Algenib 00:14:22.3 +15:18:21 2.8 12.35 89 44 Psc 00:26:32.0 +02:03:41 5.8 1.88 86 PPM 143585 00:32:50.2 +03:52:39 8.4 0.59 88 PPM 143568 00:31:39.2 +03:23:17 9.1 0.34 87 PPM 143550 00:30:23.3 +03:47:55 11.0 0.18 87 469750 00:30:41.0 +03:37:51 15.8 88 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 469750, (2022/01/02 16:09UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 39.77 55 Algenib 00:13:14.2 +15:11:01 2.8 12.35 89 44 Psc 00:25:24.2 +01:56:22 5.8 1.88 86 PPM 143585 00:31:42.3 +03:45:22 8.4 0.59 88 PPM 143568 00:30:31.3 +03:16:00 9.1 0.34 87 PPM 143550 00:29:15.4 +03:40:37 11.0 0.18 87 469750 00:29:33.1 +03:30:33 15.8 87 Positions are for J2000
Event circumstances last updated at 2021/11/15 00:45:24 UT
Marc W. Buie, Southwest Research Institute