Occultation event with (2893) Peiroos, event index number 3110
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/01/05 02:13:55 UTC
J2000 position of star is 02:23:44.9 -00:59:37
Equinox of date position of star is 02:25:04.5 -00:52:36
Star is 95 degrees from the moon. Moon is 96% illuminated.
Stellar brightness G=14.5, apparent brightess of occulting body is G=14.6
Use an exposure time of 0.60 seconds with the standard RECON-QHY system.
SNR of 10.0 per integration for unocculted signal
Expected flux drop is 51% with SNR of 5.1 for the occulted depth (per occulted point)
Apparent velocity is 8.4 km/sec on the sky relative to the star, or, 8.5 arcsec/hr.
Position angle of asteroid motion is 179.8 degrees
The recommended exposure time corresponds to 5.0 km per image.
The 1-sigma error in the time of the event is 3.6 seconds.
The 1-sigma cross-track error in the shadow position is 13.2 km.
The sky-plane scale is 3573.3 km/arcsec.
Diameter estimates:
95.5 km assuming a 5% albedo, maximum of 11.4 sec for a central chord
39.0 km assuming a 30% albedo, maximum of 4.6 sec for a central chord
Cross-track diameter of 86.9 km used for deployment plan.
Star training set for 2893_Peiroos, (2026/01/05 02:14UT) Object RA Dec mag sep mel Aldebaran 04:37:25.0 +16:33:34 0.8 37.00 58 68Omi Cet 02:20:39.8 -02:51:39 2.0 2.27 97 70 Cet 02:23:32.1 -00:46:04 5.4 0.40 95 PPM 175087 02:23:03.6 -00:14:01 8.2 0.82 95 PPM 175097 02:24:58.2 -00:31:27 9.8 0.35 95 PPM 175096 02:24:53.9 -00:57:19 10.9 0.09 95 2893_Peiroos 02:25:04.5 -00:52:36 14.6 94 Positions are for equinox of date
Star training set for 2893_Peiroos, (2026/01/05 02:14UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 37.00 58 68Omi Cet 02:19:20.8 -02:58:46 2.0 2.27 97 70 Cet 02:22:12.4 -00:53:07 5.4 0.40 95 PPM 175087 02:21:43.8 -00:21:05 8.2 0.82 95 PPM 175097 02:23:38.4 -00:38:28 9.8 0.35 95 PPM 175096 02:23:34.2 -01:04:21 10.9 0.09 95 2893_Peiroos 02:23:44.9 -00:59:37 14.6 95 Positions are for J2000