Event between (78799) 02XW93 and star GA1240:02903231 with event index number of 2436697
Geocentric closest approach at 2027/12/16 16:33:34 UTC
J2000 position of star is 06:50:41.6 +34:49:37
Equinox of date position of star is 06:52:17.9 +34:47:49
Stellar brightness G=15.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 27 degrees from the moon.
Moon is 88% illuminated.
Apparent brightness V=21.6
Object is 46.4 AU from the Sun
and 45.5 AU from the Earth.
Apparent velocity is 25.4
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 231 seconds.
The 1-sigma cross-track error in the shadow position is
2757 km.
The object has an absolute magnitude Hv=4.9
Diameter=605.4 km assuming a 5% albedo -- 24.9 sec chord
Diameter=247.1 km assuming a 30% albedo -- 10.2 sec chord
Dynamical classification is CENTAURR
Star training set for 78799, (2027/12/16 16:34UT) Object RA Dec mag sep mel Pollux 07:47:01.6 +27:57:23 1.1 13.47 14 34The Gem 06:54:37.8 +33:55:29 3.6 0.97 27 PPM 072140 06:52:03.9 +35:02:02 8.1 0.26 28 PPM 072146 06:52:19.7 +34:50:24 9.3 0.07 27 78799 06:52:32.9 +34:47:32 15.5 27 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 78799, (2027/12/16 16:34UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 13.47 14 34The Gem 06:52:47.3 +33:57:39 3.6 0.97 27 PPM 072140 06:50:12.4 +35:04:06 8.1 0.26 28 PPM 072146 06:50:28.3 +34:52:28 9.3 0.07 27 78799 06:50:41.6 +34:49:37 15.5 27 Positions are for J2000
Event circumstances last updated at 2024/03/06 04:35:25 UT
Marc W. Buie, Southwest Research Institute