Event between 98WV31 and star GA1140:01132285 with event index number of 1327112
Geocentric closest approach at 2023/12/15 15:05:12 UTC
J2000 position of star is 05:20:17.1 +25:23:15
Equinox of date position of star is 05:21:45.4 +25:24:36
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 143 degrees from the moon.
Moon is 9% illuminated.
Apparent brightness V=24.1
Object is 39.9 AU from the Sun
and 38.9 AU from the Earth.
Apparent velocity is 25.7
km/sec on the sky relative to the star, or,
3.3 arcsec/hr.
The 1-sigma error in the time of the event is 626 seconds.
The 1-sigma cross-track error in the shadow position is
4621 km.
The object has an absolute magnitude Hv=8.1
Diameter=144.5 km assuming a 5% albedo -- 5.6 sec chord
Diameter=59.0 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is 3:2E
Star training set for 98WV31, (2023/12/15 15:05UT) Object RA Dec mag sep mel Aldebaran 04:37:17.9 +16:33:20 0.8 13.63 130 Alnath 05:27:48.5 +28:37:32 1.6 3.49 144 PPM 094294 05:22:29.7 +27:58:45 6.3 2.57 143 PPM 094241 05:18:59.4 +24:02:01 7.9 1.51 142 PPM 094280 05:21:46.5 +25:11:37 8.6 0.22 143 98WV31 05:21:45.8 +25:24:36 16.8 143 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 98WV31, (2023/12/15 15:05UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 13.63 130 Alnath 05:26:17.5 +28:36:23 1.6 3.49 144 PPM 094294 05:20:59.3 +27:57:25 6.3 2.57 143 PPM 094241 05:17:31.7 +24:00:34 7.9 1.51 142 PPM 094280 05:20:18.0 +25:10:16 8.6 0.22 143 98WV31 05:20:17.1 +25:23:15 16.8 143 Positions are for J2000
Event circumstances last updated at 2023/11/06 05:16:45 UT
Marc W. Buie, Southwest Research Institute