Event between (55576) Amycus and star GA0620:42249642 with event index number of 1747707
Geocentric closest approach at 2021/07/30 01:59:08 UTC
J2000 position of star is 19:43:40.3 -26:39:00
Equinox of date position of star is 19:44:57.7 -26:35:54
Stellar brightness G=13.3,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 87 degrees from the moon.
Moon is 64% illuminated.
TNO apparent brightness V=20.6
TNO is 22.5 AU from the Sun
and 21.5 AU from the Earth.
The TNO is moving 22.5
km/sec on the sky relative to the star, or,
5.2 arcsec/hr.
The 1-sigma error in the time of the event is 82 seconds.
The 1-sigma cross-track error in the shadow position is
1076 km.
The TNO has an absolute magnitude Hv=7.1
Diameter=227.0 km assuming a 5% albedo -- 10.1 sec chord
Diameter=92.7 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is CENTAURR
Star training set for 55576, (2021/07/30 01:59UT) Object RA Dec mag sep mel Fomalhaut 22:58:50.3 -29:30:27 1.2 42.56 49 38Zet Sgr 19:03:58.9 -29:50:51 2.7 9.60 97 52 Sgr 19:38:01.1 -24:50:03 4.6 2.36 89 PPM 270168 19:43:42.8 -26:23:30 8.4 0.35 88 PPM 270195 19:45:19.1 -26:29:42 9.2 0.13 87 55576 19:44:59.6 -26:35:49 13.3 87 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 55576, (2021/07/30 01:59UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 42.56 49 38Zet Sgr 19:02:36.7 -29:52:49 2.7 9.60 97 52 Sgr 19:36:42.5 -24:53:01 4.6 2.36 89 PPM 270168 19:42:23.5 -26:26:38 8.4 0.35 88 PPM 270195 19:43:59.8 -26:32:53 9.2 0.13 87 55576 19:43:40.3 -26:39:00 13.3 87 Positions are for J2000
Event circumstances last updated at 2021/01/24 20:42:24 UT
Marc W. Buie, Southwest Research Institute