Event between (42355) Typhon and star GA0700:05628789 with event index number of 2412661
Geocentric closest approach at 2022/04/05 20:04:39 UTC
J2000 position of star is 15:04:31.5 -19:31:37
Equinox of date position of star is 15:05:45.9 -19:36:39
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 161 degrees from the moon.
Moon is 20% illuminated.
TNO apparent brightness V=21.5
TNO is 24.0 AU from the Sun
and 23.2 AU from the Earth.
The TNO is moving 18.2
km/sec on the sky relative to the star, or,
3.9 arcsec/hr.
The 1-sigma error in the time of the event is 59 seconds.
The 1-sigma cross-track error in the shadow position is
907 km.
The TNO has an absolute magnitude Hv=7.6
Diameter=181.1 km assuming a 5% albedo -- 9.9 sec chord
Diameter=74.0 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is CENTAURR
Star training set for 42355, (2022/04/05 20:05UT) Object RA Dec mag sep mel Antares 16:30:46.6 -26:28:46 0.9 20.69 177 27Bet Lib 15:18:12.5 -09:27:49 2.6 10.58 159 PPM 229408 14:53:06.5 -18:26:45 6.2 3.22 157 PPM 229753 15:07:30.9 -19:27:46 7.9 0.43 161 PPM 229731 15:06:33.5 -19:41:24 9.2 0.20 161 PPM 229723 15:06:09.5 -19:44:35 10.2 0.16 161 42355 15:05:47.6 -19:36:45 16.5 161 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 42355, (2022/04/05 20:05UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 20.69 177 27Bet Lib 15:17:00.3 -09:22:59 2.6 10.58 159 PPM 229408 14:51:51.3 -18:21:19 6.2 3.22 157 PPM 229753 15:06:14.8 -19:22:40 7.9 0.43 161 PPM 229731 15:05:17.4 -19:36:17 9.2 0.20 161 PPM 229723 15:04:53.3 -19:39:28 10.2 0.16 161 42355 15:04:31.5 -19:31:37 16.5 161 Positions are for J2000
Event circumstances last updated at 2021/10/11 01:47:55 UT
Marc W. Buie, Southwest Research Institute