Occultation event with (884) Priamus, event index number 5094
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/12/07 09:17:01 UTC
J2000 position of star is 05:43:43.0 +29:49:58
Equinox of date position of star is 05:45:26.4 +29:50:34
Star is 151 degrees from the moon. Moon is 3% illuminated.
Stellar brightness G=16.6, apparent brightess of occulting body is G=13.9
Use an exposure time of 2.00 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 8% with SNR of 0.2 for the occulted depth (per occulted point)
Apparent velocity is 18.2 km/sec on the sky relative to the star, or, 18.6 arcsec/hr.
Position angle of asteroid motion is 85.8 degrees
The recommended exposure time corresponds to 36.4 km per image.
The 1-sigma error in the time of the event is 0.1 seconds.
The 1-sigma cross-track error in the shadow position is 34.0 km.
The sky-plane scale is 3526.3 km/arcsec.
Diameter estimates:
112.7 km assuming a 5% albedo, maximum of 6.2 sec for a central chord
46.0 km assuming a 30% albedo, maximum of 2.5 sec for a central chord
Cross-track diameter of 101.1 km used for deployment plan.
Star training set for 884_Priamus, (2026/12/07 09:17UT) Object RA Dec mag sep mel Aldebaran 04:37:28.2 +16:33:40 0.8 20.45 164 Alnath 05:27:59.8 +28:37:39 1.6 3.99 155 PPM 094619 05:41:01.1 +29:13:41 5.9 1.14 152 PPM 070780 05:46:01.4 +30:01:44 8.5 0.22 151 PPM 094751 05:45:20.2 +29:45:47 9.1 0.08 151 884_Priamus 05:45:26.4 +29:50:34 13.9 150 Positions are for equinox of date
Star training set for 884_Priamus, (2026/12/07 09:17UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 20.45 164 Alnath 05:26:17.6 +28:36:22 1.6 3.99 155 PPM 094619 05:39:18.3 +29:12:54 5.9 1.14 152 PPM 070780 05:44:17.8 +30:01:09 8.5 0.22 151 PPM 094751 05:43:36.8 +29:45:11 9.1 0.08 151 884_Priamus 05:43:43.0 +29:49:58 13.9 151 Positions are for J2000