Event between (118698) 00OY51 and star GA0840:19818391 with event index number of 2111433
Geocentric closest approach at 2022/04/25 14:42:01 UTC
J2000 position of star is 21:50:03.6 -05:16:39
Equinox of date position of star is 21:51:12.1 -05:10:30
Stellar brightness G=14.3,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 13 degrees from the moon.
Moon is 27% illuminated.
TNO apparent brightness V=23.8
TNO is 35.1 AU from the Sun
and 35.5 AU from the Earth.
The TNO is moving 17.9
km/sec on the sky relative to the star, or,
2.5 arcsec/hr.
The 1-sigma error in the time of the event is 307 seconds.
The 1-sigma cross-track error in the shadow position is
3773 km.
The TNO has an absolute magnitude Hv=8.2
Diameter=138.0 km assuming a 5% albedo -- 7.7 sec chord
Diameter=56.4 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is 7:4EEE
Star training set for 118698, (2022/04/25 14:48UT) Object RA Dec mag sep mel Fomalhaut 22:58:52.7 -29:30:13 1.2 29.11 16 Markab 23:05:52.5 +15:19:33 2.5 27.60 32 PPM 205611 21:48:48.6 -05:48:45 6.3 0.88 13 PPM 205638 21:50:12.0 -05:17:58 6.6 0.29 13 PPM 205645 21:50:37.0 -05:09:26 9.5 0.15 14 118698 21:51:13.6 -05:10:21 14.3 13 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 118698, (2022/04/25 14:48UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 29.11 16 Markab 23:04:45.8 +15:12:18 2.5 27.60 32 PPM 205611 21:47:38.3 -05:55:00 6.3 0.88 13 PPM 205638 21:49:01.8 -05:24:15 6.6 0.29 13 PPM 205645 21:49:26.9 -05:15:43 9.5 0.15 14 118698 21:50:03.6 -05:16:39 14.3 13 Positions are for J2000
Event circumstances last updated at 2021/10/25 23:23:28 UT
Marc W. Buie, Southwest Research Institute