Event between (50000) Quaoar and star GA0740:25669142 with event index number of 2328006
Geocentric closest approach at 2028/04/30 19:48:15 UTC
J2000 position of star is 19:01:12.9 -14:36:04
Equinox of date position of star is 19:02:35.4 -14:33:55
Stellar brightness G=17.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 168 degrees from the moon.
Moon is 36% illuminated.
Apparent brightness V=18.8
Object is 42.6 AU from the Sun
and 42.1 AU from the Earth.
Apparent velocity is 8.6
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 320 seconds.
The 1-sigma cross-track error in the shadow position is
2494 km.
The object has an absolute magnitude Hv=2.4
Diameter=1905.5 km assuming a 5% albedo -- 229.2 sec chord
Diameter=777.9 km assuming a 30% albedo -- 93.6 sec chord
Dynamical classification is CLASSICAL
Star training set for 50000, (2028/04/30 19:48UT) Object RA Dec mag sep mel Antares 16:31:09.0 -26:29:32 0.9 37.30 135 Nunki 18:57:01.2 -26:15:32 2.0 11.78 167 PPM 235374 19:03:10.6 -15:14:25 6.5 0.69 168 PPM 235371 19:03:04.4 -14:28:34 9.2 0.10 167 50000 19:02:49.5 -14:33:32 17.0 168 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 50000, (2028/04/30 19:48UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 37.30 135 Nunki 18:55:15.9 -26:17:49 2.0 11.78 167 PPM 235374 19:01:33.5 -15:16:58 6.5 0.69 168 PPM 235371 19:01:27.9 -14:31:06 9.2 0.10 167 50000 19:01:12.9 -14:36:04 17.0 167 Positions are for J2000
Event circumstances last updated at 2024/03/07 04:23:41 UT
Marc W. Buie, Southwest Research Institute