Event between 10JJ210 and star GA0940:17058746 with event index number of 1578202
Geocentric closest approach at 2021/08/15 16:06:16 UTC
J2000 position of star is 23:55:18.4 +04:13:15
Equinox of date position of star is 23:56:23.1 +04:20:18
Stellar brightness G=15.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 127 degrees from the moon.
Moon is 50% illuminated.
TNO apparent brightness V=23.0
TNO is 39.0 AU from the Sun
and 38.2 AU from the Earth.
The TNO is moving 18.3
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 186 seconds.
The 1-sigma cross-track error in the shadow position is
1844 km.
The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 13.1 sec chord
Diameter=97.9 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is SCATNEAR
Star training set for 10JJ210, (2021/08/15 16:06UT) Object RA Dec mag sep mel Fomalhaut 22:58:50.4 -29:30:26 1.2 36.56 100 Algenib 00:14:21.1 +15:18:13 2.8 11.82 134 22 Psc 23:53:04.3 +03:03:02 5.5 1.54 126 PPM 174541 23:55:26.0 +03:47:51 8.2 0.60 126 PPM 174572 23:56:53.9 +04:12:39 9.3 0.18 127 PPM 174564 23:56:34.7 +04:28:29 10.6 0.14 127 10JJ210 23:56:24.8 +04:20:29 15.8 127 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 10JJ210, (2021/08/15 16:06UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 36.56 100 Algenib 00:13:14.2 +15:11:01 2.8 11.82 134 22 Psc 23:51:57.9 +02:55:49 5.5 1.54 126 PPM 174541 23:54:19.5 +03:40:38 8.2 0.60 126 PPM 174572 23:55:47.4 +04:05:26 9.3 0.18 127 PPM 174564 23:55:28.2 +04:21:16 10.6 0.14 127 10JJ210 23:55:18.4 +04:13:15 15.8 127 Positions are for J2000
Event circumstances last updated at 2021/01/24 21:03:00 UT
Marc W. Buie, Southwest Research Institute