Event between 07HV90 and star GA0660:09691394 with event index number of 2019351
Geocentric closest approach at 2021/05/18 00:57:09 UTC
J2000 position of star is 17:07:50.0 -22:17:40
Equinox of date position of star is 17:09:07.2 -22:19:16
Stellar brightness G=16.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 131 degrees from the moon.
Moon is 32% illuminated.
TNO apparent brightness V=22.7
TNO is 41.7 AU from the Sun
and 40.8 AU from the Earth.
The TNO is moving 22.7
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 600 seconds.
The 1-sigma cross-track error in the shadow position is
3928 km.
The TNO has an absolute magnitude Hv=6.5
Diameter=300.6 km assuming a 5% albedo -- 13.3 sec chord
Diameter=122.7 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is CLASSICAL
Star training set for 07HV90, (2021/05/18 00:57UT) Object RA Dec mag sep mel Antares 16:30:43.3 -26:28:39 0.9 9.68 124 35Eta Oph 17:11:36.3 -15:45:00 2.6 6.60 130 PPM 266403 17:07:28.5 -21:35:33 6.3 0.82 131 PPM 266452 17:09:44.6 -22:17:53 9.5 0.15 132 07HV90 17:09:07.2 -22:19:16 16.4 132 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 07HV90, (2021/05/18 00:57UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 9.68 124 35Eta Oph 17:10:22.7 -15:43:29 2.6 6.60 130 PPM 266403 17:06:11.8 -21:33:54 6.3 0.82 131 PPM 266452 17:08:27.4 -22:16:19 9.5 0.15 132 07HV90 17:07:50.0 -22:17:40 16.4 131 Positions are for J2000
Event circumstances last updated at 2021/05/18 00:32:27 UT
Marc W. Buie, Southwest Research Institute