Event between 00AF255 and star GA1380:04207154 with event index number of 1986664
Geocentric closest approach at 2021/09/21 04:19:41 UTC
J2000 position of star is 08:42:21.9 +49:55:38
Equinox of date position of star is 08:43:54.4 +49:50:55
Stellar brightness G=16.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 117 degrees from the moon.
Moon is 100% illuminated.
TNO apparent brightness V=22.9
TNO is 48.9 AU from the Sun
and 49.3 AU from the Earth.
The TNO is moving 22.9
km/sec on the sky relative to the star, or,
2.3 arcsec/hr.
The 1-sigma error in the time of the event is 467 seconds.
The 1-sigma cross-track error in the shadow position is
4604 km.
The TNO has an absolute magnitude Hv=5.9
Diameter=401.8 km assuming a 5% albedo -- 17.6 sec chord
Diameter=164.0 km assuming a 30% albedo -- 7.2 sec chord
Dynamical classification is SCATNEAR
Star training set for 00AF255, (2021/09/21 04:20UT) Object RA Dec mag sep mel Pollux 07:46:38.5 +27:58:19 1.1 24.45 113 Merak 11:03:08.3 +56:15:56 2.4 21.62 126 9Iot UMa 09:00:41.1 +47:57:18 3.1 3.34 120 PPM 050694 08:38:13.7 +49:17:58 8.2 1.07 116 PPM 050774 08:44:36.9 +49:54:28 8.9 0.13 117 00AF255 08:43:54.8 +49:50:54 16.7 117 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 00AF255, (2021/09/21 04:20UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 24.45 113 Merak 11:01:50.7 +56:22:57 2.4 21.62 126 9Iot UMa 08:59:11.5 +48:02:25 3.1 3.34 120 PPM 050694 08:36:40.8 +49:22:34 8.2 1.07 116 PPM 050774 08:43:04.1 +49:59:13 8.9 0.13 117 00AF255 08:42:21.9 +49:55:38 16.7 117 Positions are for J2000
Event circumstances last updated at 2021/08/25 04:09:37 UT
Marc W. Buie, Southwest Research Institute