Event between 17OF69 and star GA0840:19268631 with event index number of 1154467
Geocentric closest approach at 2021/05/20 14:00:02 UTC
J2000 position of star is 20:28:42.0 -04:51:52
Equinox of date position of star is 20:29:48.7 -04:47:37
Stellar brightness G=15.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 144 degrees from the moon.
Moon is 59% illuminated.
TNO apparent brightness V=20.9
TNO is 43.3 AU from the Sun
and 42.9 AU from the Earth.
The TNO is moving 8.9
km/sec on the sky relative to the star, or,
1.0 arcsec/hr.
The 1-sigma error in the time of the event is 191 seconds.
The 1-sigma cross-track error in the shadow position is
1600 km.
The TNO has an absolute magnitude Hv=4.4
Diameter=801.7 km assuming a 5% albedo -- 90.5 sec chord
Diameter=327.3 km assuming a 30% albedo -- 37.0 sec chord
Dynamical classification is 3:2E
Star training set for 17OF69, (2021/05/20 14:00UT) Object RA Dec mag sep mel Fomalhaut 22:58:49.7 -29:30:30 1.2 42.99 163 Tarazed 19:47:16.6 +10:40:00 2.7 18.74 128 69 Aql 20:30:46.0 -02:48:47 4.9 1.99 143 PPM 204079 20:29:06.5 -05:00:27 7.9 0.28 144 PPM 204086 20:29:22.6 -04:48:30 8.7 0.11 144 17OF69 20:29:49.7 -04:47:33 15.0 144 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 17OF69, (2021/05/20 14:00UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 42.99 163 Tarazed 19:46:15.6 +10:36:48 2.7 18.74 128 69 Aql 20:29:39.1 -02:53:08 4.9 1.99 143 PPM 204079 20:27:58.7 -05:04:45 7.9 0.28 144 PPM 204086 20:28:14.9 -04:52:49 8.7 0.11 144 17OF69 20:28:42.0 -04:51:52 15.0 144 Positions are for J2000
Event circumstances last updated at 2021/01/24 20:36:41 UT
Marc W. Buie, Southwest Research Institute