Event between (69987) 98WA25 and star GA1120:01306197 with event index number of 1486699
Geocentric closest approach at 2026/01/29 23:21:31 UTC
J2000 position of star is 05:35:40.2 +22:29:36
Equinox of date position of star is 05:37:03.6 +22:30:23
Stellar brightness G=13.1,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 8 degrees from the moon.
Moon is 88% illuminated.
Apparent brightness V=23.5
Object is 42.6 AU from the Sun
and 41.9 AU from the Earth.
Apparent velocity is 16.8
km/sec on the sky relative to the star, or,
2.0 arcsec/hr.
The 1-sigma error in the time of the event is 501 seconds.
The 1-sigma cross-track error in the shadow position is
2107 km.
The object has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 13.7 sec chord
Diameter=93.5 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is CLASSICAL
Star training set for 69987, (2026/01/29 23:36UT) Object RA Dec mag sep mel Aldebaran 04:37:25.2 +16:33:35 0.8 15.29 23 Alnath 05:27:56.6 +28:37:38 1.6 6.47 8 PPM 094621 05:41:01.2 +21:46:31 6.4 1.14 8 PPM 094553 05:38:00.4 +22:00:25 7.5 0.53 9 PPM 094528 05:37:00.5 +22:27:10 8.7 0.08 9 69987 05:37:14.8 +22:30:29 13.1 8 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, (2026/01/29 23:36UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 15.29 23 Alnath 05:26:17.6 +28:36:23 1.6 6.47 8 PPM 094621 05:39:27.1 +21:45:46 6.4 1.14 8 PPM 094553 05:36:26.2 +21:59:33 7.5 0.53 9 PPM 094528 05:35:26.0 +22:26:16 8.7 0.08 9 69987 05:35:40.2 +22:29:36 13.1 8 Positions are for J2000
Event circumstances last updated at 2022/12/25 03:34:04 UT
Marc W. Buie, Southwest Research Institute