Event between 13UT22 and star GA0900:00286108 with event index number of 1673691
Geocentric closest approach at 2021/07/19 08:09:20 UTC
J2000 position of star is 03:23:20.7 +01:07:40
Equinox of date position of star is 03:24:25.9 +01:12:06
Stellar brightness G=15.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 164 degrees from the moon.
Moon is 71% illuminated.
TNO apparent brightness V=23.6
TNO is 38.7 AU from the Sun
and 39.1 AU from the Earth.
The TNO is moving 18.3
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 575 seconds.
The 1-sigma cross-track error in the shadow position is
5763 km.
The TNO has an absolute magnitude Hv=7.5
Diameter=193.2 km assuming a 5% albedo -- 10.6 sec chord
Diameter=78.9 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is 5:3EE
Star training set for 13UT22, (2021/07/19 08:09UT) Object RA Dec mag sep mel Aldebaran 04:37:09.6 +16:33:03 0.8 23.58 162 Menkar 03:03:24.5 +04:10:23 2.5 6.04 166 95 Cet 03:19:28.7 -00:51:11 6.2 2.40 162 PPM 146516 03:24:42.9 +00:59:06 7.5 0.23 164 PPM 146509 03:23:56.0 +01:14:05 9.3 0.13 164 13UT22 03:24:27.4 +01:12:12 15.9 164 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 13UT22, (2021/07/19 08:09UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 23.58 162 Menkar 03:02:16.8 +04:05:21 2.5 6.04 166 95 Cet 03:18:22.8 -00:55:50 6.2 2.40 162 PPM 146516 03:23:36.3 +00:54:34 7.5 0.23 164 PPM 146509 03:22:49.3 +01:09:33 9.3 0.13 164 13UT22 03:23:20.7 +01:07:40 15.9 164 Positions are for J2000
Event circumstances last updated at 2021/01/23 20:54:29 UT
Marc W. Buie, Southwest Research Institute