Event between (10370) Hylonome and star GA0700:32685122 with event index number of 1089687
Geocentric closest approach at 2021/07/04 15:49:39 UTC
J2000 position of star is 19:16:40.5 -18:10:18
Equinox of date position of star is 19:17:55.2 -18:07:56
Stellar brightness G=16.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 115 degrees from the moon.
Moon is 25% illuminated.
TNO apparent brightness V=22.5
TNO is 25.0 AU from the Sun
and 24.0 AU from the Earth.
The TNO is moving 23.4
km/sec on the sky relative to the star, or,
4.8 arcsec/hr.
The 1-sigma error in the time of the event is 1582 seconds.
The 1-sigma cross-track error in the shadow position is
5527 km.
The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 4.9 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
Star training set for 10370, (2021/07/04 15:50UT) Object RA Dec mag sep mel Antares 16:30:43.8 -26:28:40 0.9 39.38 153 Nunki 18:56:35.8 -26:16:05 2.0 9.51 121 43 Sgr 19:18:53.5 -18:54:47 4.9 0.81 115 PPM 235770 19:18:51.9 -17:52:55 8.4 0.34 115 10370 19:17:55.6 -18:07:55 16.7 115 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 10370, (2021/07/04 15:50UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 39.38 153 Nunki 18:55:15.9 -26:17:49 2.0 9.51 121 43 Sgr 19:17:38.1 -18:57:11 4.9 0.81 115 PPM 235770 19:17:37.0 -17:55:19 8.4 0.34 115 10370 19:16:40.5 -18:10:18 16.7 115 Positions are for J2000
Event circumstances last updated at 2021/06/02 02:04:49 UT
Marc W. Buie, Southwest Research Institute