Event between (69987) 98WA25 and star GA1120:01480192 with event index number of 1807866
Geocentric closest approach at 2028/01/09 19:42:21 UTC
J2000 position of star is 05:48:35.0 +22:36:43
Equinox of date position of star is 05:49:58.4 +22:37:04
Stellar brightness G=16.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 11 degrees from the moon.
Moon is 92% illuminated.
Apparent brightness V=23.4
Object is 42.6 AU from the Sun
and 41.7 AU from the Earth.
Apparent velocity is 23.7
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 473 seconds.
The 1-sigma cross-track error in the shadow position is
2309 km.
The object has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 9.8 sec chord
Diameter=93.5 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is CLASSICAL
Star training set for 69987, (2028/01/09 19:56UT) Object RA Dec mag sep mel Betelgeuse 05:56:41.4 +07:24:36 0.4 15.29 23 Alnath 05:28:04.0 +28:37:43 1.6 7.82 6 PPM 094739 05:45:01.7 +23:12:54 5.9 1.35 10 PPM 094731 05:44:43.8 +22:41:12 8.5 1.28 10 PPM 094938 05:51:16.0 +22:44:28 9.7 0.26 11 PPM 094915 05:50:32.8 +22:29:27 10.7 0.14 11 69987 05:50:16.7 +22:37:08 16.0 12 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, (2028/01/09 19:56UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 15.29 23 Alnath 05:26:17.6 +28:36:23 1.6 7.82 6 PPM 094739 05:43:19.5 +23:12:15 5.9 1.35 10 PPM 094731 05:43:02.0 +22:40:32 8.5 1.28 10 PPM 094938 05:49:34.2 +22:44:04 9.7 0.26 11 PPM 094915 05:48:51.1 +22:29:02 10.7 0.14 11 69987 05:48:35.0 +22:36:43 16.0 11 Positions are for J2000
Event circumstances last updated at 2022/12/26 04:16:05 UT
Marc W. Buie, Southwest Research Institute