Event between (341520) Mors-Somnus and star GA1020:00465578 with event index number of 2200833
Geocentric closest approach at 2026/10/30 17:47:13 UTC
J2000 position of star is 04:26:32.6 +12:44:06
Equinox of date position of star is 04:27:53.6 +12:47:17
Stellar brightness G=11.9,
use SENSEUP=8 with the MallinCam and and exposure
time of 125 milli-seconds with the QHY174 camera.
Star is 35 degrees from the moon.
Moon is 73% illuminated.
Apparent brightness V=21.5
Object is 29.4 AU from the Sun
and 28.5 AU from the Earth.
Apparent velocity is 20.3
km/sec on the sky relative to the star, or,
3.5 arcsec/hr.
The 1-sigma error in the time of the event is 93 seconds.
The 1-sigma cross-track error in the shadow position is
1080 km.
The object has an absolute magnitude Hv=6.8
Diameter=257.0 km assuming a 5% albedo -- 12.9 sec chord
Diameter=104.9 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is 3:2E
Star training set for 341520, (2026/10/30 17:44UT) Object RA Dec mag sep mel Aldebaran 04:37:27.8 +16:33:40 0.8 4.40 31 Bellatrix 05:26:34.3 +06:22:18 1.6 15.78 27 79 Tau 04:30:20.5 +13:06:17 5.3 0.64 34 PPM 119862 04:26:10.5 +12:57:50 8.0 0.49 35 PPM 119887 04:27:35.7 +12:36:05 9.5 0.22 35 341520 04:28:02.5 +12:47:38 11.9 34 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 341520, (2026/10/30 17:44UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 4.40 31 Bellatrix 05:25:07.8 +06:20:58 1.6 15.78 27 79 Tau 04:28:50.3 +13:02:51 5.3 0.64 34 PPM 119862 04:24:40.4 +12:54:15 8.0 0.49 35 PPM 119887 04:26:05.9 +12:32:32 9.5 0.22 35 341520 04:26:32.6 +12:44:06 11.9 35 Positions are for J2000
Event circumstances last updated at 2024/03/05 04:51:46 UT
Marc W. Buie, Southwest Research Institute