Event between (69987) 98WA25 and star GA1120:01504018 with event index number of 1807863
Geocentric closest approach at 2027/12/22 16:42:32 UTC
J2000 position of star is 05:50:08.3 +22:36:59
Equinox of date position of star is 05:51:31.8 +22:37:18
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 122 degrees from the moon.
Moon is 26% illuminated.
Apparent brightness V=23.4
Object is 42.6 AU from the Sun
and 41.6 AU from the Earth.
Apparent velocity is 25.7
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 454 seconds.
The 1-sigma cross-track error in the shadow position is
1678 km.
The object has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 9.0 sec chord
Diameter=93.5 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is CLASSICAL
Star training set for 69987, (2027/12/22 16:56UT) Object RA Dec mag sep mel Betelgeuse 05:56:41.2 +07:24:36 0.4 15.26 118 Alnath 05:28:03.8 +28:37:43 1.6 8.05 128 PPM 094739 05:45:01.5 +23:12:54 5.9 1.68 124 PPM 094925 05:50:53.2 +21:08:34 7.1 1.50 122 PPM 094938 05:51:15.8 +22:44:28 9.7 0.18 122 PPM 094949 05:51:44.2 +22:33:40 10.2 0.07 122 69987 05:51:49.9 +22:37:21 16.8 122 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 69987, (2027/12/22 16:56UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 15.26 118 Alnath 05:26:17.6 +28:36:23 1.6 8.05 128 PPM 094739 05:43:19.5 +23:12:15 5.9 1.68 124 PPM 094925 05:49:12.8 +21:08:09 7.1 1.50 122 PPM 094938 05:49:34.2 +22:44:04 9.7 0.18 122 PPM 094949 05:50:02.6 +22:33:18 10.2 0.07 122 69987 05:50:08.3 +22:36:59 16.8 122 Positions are for J2000
Event circumstances last updated at 2022/12/26 04:09:12 UT
Marc W. Buie, Southwest Research Institute