Event between (44594) 99OX3 and star GA1100:00535602 with event index number of 2291527
Geocentric closest approach at 2027/12/20 00:21:20 UTC
J2000 position of star is 04:10:32.1 +21:42:05
Equinox of date position of star is 04:11:57.9 +21:45:46
Stellar brightness G=12.0,
use SENSEUP=16 with the MallinCam and and exposure
time of 250 milli-seconds with the QHY174 camera.
Star is 108 degrees from the moon.
Moon is 54% illuminated.
Apparent brightness V=19.7
Object is 18.0 AU from the Sun
and 17.1 AU from the Earth.
Apparent velocity is 19.5
km/sec on the sky relative to the star, or,
5.7 arcsec/hr.
The 1-sigma error in the time of the event is 88 seconds.
The 1-sigma cross-track error in the shadow position is
709 km.
The object has an absolute magnitude Hv=7.1
Diameter=231.2 km assuming a 5% albedo -- 12.0 sec chord
Diameter=94.4 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is CENTAURR
Star training set for 44594, (2027/12/20 00:23UT) Object RA Dec mag sep mel Aldebaran 04:37:31.7 +16:33:49 0.8 7.93 103 44Zet Per 03:55:53.8 +31:57:52 2.8 10.82 110 PPM 093337 04:14:31.1 +22:28:58 6.1 0.89 108 PPM 093312 04:13:04.9 +21:55:23 10.0 0.26 108 44594 04:12:11.4 +21:46:21 12.0 108 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 44594, (2027/12/20 00:23UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 7.93 103 44Zet Per 03:54:07.9 +31:53:01 2.8 10.82 110 PPM 093337 04:12:51.3 +22:24:47 6.1 0.89 108 PPM 093312 04:11:25.5 +21:51:09 10.0 0.26 108 44594 04:10:32.1 +21:42:05 12.0 108 Positions are for J2000
Event circumstances last updated at 2024/03/06 04:35:28 UT
Marc W. Buie, Southwest Research Institute