Event between (42355) Typhon and star GA0660:06794712 with event index number of 2412853
Geocentric closest approach at 2026/01/22 09:56:06 UTC
J2000 position of star is 15:53:03.0 -22:29:23
Equinox of date position of star is 15:54:29.8 -22:33:39
Stellar brightness G=15.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 104 degrees from the moon.
Moon is 13% illuminated.
Apparent brightness V=22.1
Object is 26.5 AU from the Sun
and 26.9 AU from the Earth.
Apparent velocity is 20.5
km/sec on the sky relative to the star, or,
3.8 arcsec/hr.
The 1-sigma error in the time of the event is 61 seconds.
The 1-sigma cross-track error in the shadow position is
1005 km.
The object has an absolute magnitude Hv=7.6
Diameter=181.1 km assuming a 5% albedo -- 8.8 sec chord
Diameter=74.0 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is CENTAURR
Star training set for 42355, (2026/01/22 09:56UT) Object RA Dec mag sep mel Antares 16:31:00.6 -26:29:15 0.9 9.16 95 7Del Sco 16:01:52.7 -22:41:37 2.3 1.69 102 PPM 264830 15:55:29.3 -24:03:13 5.4 1.50 103 PPM 264845 15:56:14.3 -22:50:29 7.2 0.47 103 PPM 264779 15:52:57.8 -22:40:07 9.0 0.39 104 42355 15:54:35.4 -22:33:56 15.0 103 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, (2026/01/22 09:56UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 9.16 95 7Del Sco 16:00:20.0 -22:37:19 2.3 1.69 102 PPM 264830 15:53:55.9 -23:58:42 5.4 1.50 103 PPM 264845 15:54:41.6 -22:45:59 7.2 0.47 103 PPM 264779 15:51:25.3 -22:35:31 9.0 0.39 104 42355 15:53:03.0 -22:29:23 15.0 104 Positions are for J2000
Event circumstances last updated at 2024/06/18 21:23:59 UT
Marc W. Buie, Southwest Research Institute