Occultation event with (2893) Peiroos, event index number 4556
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/11/03 09:10:03 UTC
J2000 position of star is 04:51:12.1 +10:41:28
Equinox of date position of star is 04:52:41.1 +10:44:06
Star is 78 degrees from the moon. Moon is 33% illuminated.
Stellar brightness G=10.4, apparent brightess of occulting body is G=14.3
Use an exposure time of 0.12 seconds with the standard RECON-QHY system.
SNR of 49.0 per integration for unocculted signal
Expected flux drop is 97% with SNR of 47.7 for the occulted depth (per occulted point)
Apparent velocity is 13.7 km/sec on the sky relative to the star, or, 14.8 arcsec/hr.
Position angle of asteroid motion is 80.7 degrees
The recommended exposure time corresponds to 1.6 km per image.
The 1-sigma error in the time of the event is 1.2 seconds.
The 1-sigma cross-track error in the shadow position is 30.6 km.
The sky-plane scale is 3331.8 km/arcsec.
Diameter estimates:
95.5 km assuming a 5% albedo, maximum of 7.0 sec for a central chord
39.0 km assuming a 30% albedo, maximum of 2.9 sec for a central chord
Cross-track diameter of 86.9 km used for deployment plan.
Star training set for 2893_Peiroos, (2026/11/03 09:10UT) Object RA Dec mag sep mel Aldebaran 04:37:27.8 +16:33:40 0.8 6.90 81 Bellatrix 05:26:34.3 +06:22:18 1.6 9.44 70 PPM 148079 04:53:12.0 +10:01:07 6.1 0.73 78 PPM 120309 04:51:38.4 +10:38:55 8.2 0.27 78 PPM 120325 04:52:41.1 +10:44:05 10.6 0.00 78 2893_Peiroos 04:52:41.1 +10:44:06 14.3 77 Positions are for equinox of date
Star training set for 2893_Peiroos, (2026/11/03 09:10UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 6.90 81 Bellatrix 05:25:07.8 +06:20:58 1.6 9.44 70 PPM 148079 04:51:43.4 +09:58:30 6.1 0.73 78 PPM 120309 04:50:09.5 +10:36:16 8.2 0.27 78 PPM 120325 04:51:12.1 +10:41:28 10.6 0.00 78 2893_Peiroos 04:51:12.1 +10:41:28 14.3 78 Positions are for J2000