Event between (531917) 13BN82 and star GA1000:03307246 with event index number of 1601987
Geocentric closest approach at 2021/05/08 00:44:15 UTC
J2000 position of star is 09:08:04.1 +10:44:39
Equinox of date position of star is 09:09:12.4 +10:39:29
Stellar brightness G=12.7,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 129 degrees from the moon.
Moon is 13% illuminated.
TNO apparent brightness V=22.3
TNO is 35.1 AU from the Sun
and 35.1 AU from the Earth.
The TNO is moving 6.5
km/sec on the sky relative to the star, or,
0.9 arcsec/hr.
The 1-sigma error in the time of the event is 344 seconds.
The 1-sigma cross-track error in the shadow position is
1474 km.
The TNO has an absolute magnitude Hv=6.7
Diameter=275.4 km assuming a 5% albedo -- 42.6 sec chord
Diameter=112.4 km assuming a 30% albedo -- 17.4 sec chord
Dynamical classification is 7:4EEE
Star training set for 531917, (2021/05/08 00:47UT) Object RA Dec mag sep mel Regulus 10:09:30.4 +11:51:43 1.3 14.83 143 76Kap Cnc 09:08:54.1 +10:34:52 5.2 0.11 129 PPM 126075 09:05:45.2 +10:45:50 8.5 0.86 128 76Kap Cnc 09:08:54.1 +10:34:52 5.2 0.11 129 531917 09:09:13.4 +10:39:25 12.7 129 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 531917, (2021/05/08 00:47UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 14.83 143 76Kap Cnc 09:07:44.8 +10:40:05 5.2 0.11 129 PPM 126075 09:04:35.8 +10:50:59 8.5 0.86 128 76Kap Cnc 09:07:44.8 +10:40:05 5.2 0.11 129 531917 09:08:04.1 +10:44:39 12.7 129 Positions are for J2000
Event circumstances last updated at 2021/01/22 20:44:30 UT
Marc W. Buie, Southwest Research Institute