Event between 13RH109 and star GA0920:18056075 with event index number of 2463309
Geocentric closest approach at 2023/07/24 20:09:20 UTC
J2000 position of star is 22:44:35.1 +03:00:49
Equinox of date position of star is 22:45:44.6 +03:08:01
Stellar brightness G=12.8,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 143 degrees from the moon.
Moon is 39% illuminated.
TNO apparent brightness V=23.4
TNO is 38.6 AU from the Sun
and 37.9 AU from the Earth.
The TNO is moving 17.4
km/sec on the sky relative to the star, or,
2.3 arcsec/hr.
The 1-sigma error in the time of the event is 254 seconds.
The 1-sigma cross-track error in the shadow position is
1627 km.
The TNO has an absolute magnitude Hv=7.5
Diameter=192.3 km assuming a 5% albedo -- 11.1 sec chord
Diameter=78.5 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is 4:3E
Star training set for 13RH109, (2023/07/24 20:09UT) Object RA Dec mag sep mel Fomalhaut 22:58:56.8 -29:29:48 1.2 32.79 131 Markab 23:05:56.2 +15:19:57 2.5 13.17 148 1 Psc 22:56:11.8 +01:11:28 6.2 3.25 145 PPM 173434 22:48:42.1 +03:01:45 7.8 0.74 144 PPM 173397 22:46:39.7 +03:21:21 9.9 0.31 143 13RH109 22:45:47.1 +03:08:16 12.8 143 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 13RH109, (2023/07/24 20:09UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 32.79 131 Markab 23:04:45.8 +15:12:18 2.5 13.17 148 1 Psc 22:54:59.5 +01:03:54 6.2 3.25 145 PPM 173434 22:47:30.2 +02:54:16 7.8 0.74 144 PPM 173397 22:45:27.8 +03:13:53 9.9 0.31 143 13RH109 22:44:35.1 +03:00:49 12.8 143 Positions are for J2000
Event circumstances last updated at 2022/10/05 04:20:50 UT
Marc W. Buie, Southwest Research Institute