Event between (517717) 15KZ120 and star GA1720:00626222 with event index number of 2626959
Geocentric closest approach at 2021/10/09 14:46:01 UTC
J2000 position of star is 21:39:15.1 +82:31:34
Equinox of date position of star is 21:38:13.3 +82:37:28
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 109 degrees from the moon.
Moon is 14% illuminated.
TNO apparent brightness V=20.4
TNO is 9.8 AU from the Sun
and 9.5 AU from the Earth.
The TNO is moving 20.6
km/sec on the sky relative to the star, or,
10.8 arcsec/hr.
The 1-sigma error in the time of the event is 37 seconds.
The 1-sigma cross-track error in the shadow position is
462 km.
The TNO has an absolute magnitude Hv=10.1
Diameter=57.5 km assuming a 5% albedo -- 2.8 sec chord
Diameter=23.5 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
Star training set for 517717, (2021/10/09 14:46UT) Object RA Dec mag sep mel PPM 000431 02:59:38.3 +89:21:18 2.0 7.29 110 PPM 003728 21:12:22.0 +81:19:17 6.1 1.58 108 PPM 003880 21:57:24.6 +82:58:33 8.3 0.70 110 PPM 003805 21:35:46.3 +83:01:09 9.2 0.40 109 PPM 003826 21:40:37.0 +82:44:29 10.5 0.14 109 517717 21:38:13.0 +82:37:30 16.5 109 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 517717, (2021/10/09 14:46UT) Object RA Dec mag sep mel PPM 000431 02:31:53.0 +89:15:50 2.0 7.29 110 PPM 003728 21:13:21.4 +81:13:52 6.1 1.58 108 PPM 003880 21:58:16.7 +82:52:17 8.3 0.70 110 PPM 003805 21:36:57.7 +82:55:16 9.2 0.40 109 PPM 003826 21:41:39.2 +82:38:30 10.5 0.14 109 517717 21:39:15.1 +82:31:34 16.5 109 Positions are for J2000
Event circumstances last updated at 2021/09/02 01:55:51 UT
Marc W. Buie, Southwest Research Institute