Occultation event with (2893) Peiroos, event index number 1095
Regions able to see the event: SAmericaS
Geocentric closest approach at 2025/06/25 10:03:13 UTC
J2000 position of star is 02:37:02.6 +01:23:28
Equinox of date position of star is 02:38:21.5 +01:30:02
Star is 59 degrees from the moon. Moon is 0% illuminated.
Stellar brightness G=15.4, apparent brightess of occulting body is G=14.8
Use an exposure time of 0.80 seconds with the standard RECON-QHY system.
SNR of 6.0 per integration for unocculted signal
Expected flux drop is 37% with SNR of 2.2 for the occulted depth (per occulted point)
Apparent velocity is 29.2 km/sec on the sky relative to the star, or, 25.4 arcsec/hr.
The recommended exposure time corresponds to 23.3 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 15.6 km.
The sky-plane scale is 4127.9 km/arcsec.
Diameter estimates:
95.5 km assuming a 5% albedo, aximum of 3.3 sec for a central chord
39.0 km assuming a 30% albedo, maximum of 1.3 sec for a central chord
Cross-track diameter of 95.5 km used for deployment plan.
Star training set for 2893_Peiroos, (2025/06/25 10:03UT) Object RA Dec mag sep mel Aldebaran 04:37:23.2 +16:33:30 0.8 32.93 26 68Omi Cet 02:20:38.1 -02:51:48 2.0 6.22 65 82Del Cet 02:40:47.5 +00:26:13 4.1 1.23 59 PPM 145802 02:41:52.6 +01:58:27 8.5 1.00 58 PPM 145730 02:36:29.9 +01:14:51 9.3 0.53 59 PPM 145751 02:38:12.9 +01:12:11 10.2 0.30 59 2893_Peiroos 02:38:21.5 +01:30:02 14.8 59 Positions are for equinox of date
Star training set for 2893_Peiroos, (2025/06/25 10:03UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 32.93 26 68Omi Cet 02:19:20.8 -02:58:46 2.0 6.22 65 82Del Cet 02:39:29.0 +00:19:42 4.1 1.23 59 PPM 145802 02:40:33.5 +01:51:58 8.5 1.00 58 PPM 145730 02:35:11.1 +01:08:14 9.3 0.53 59 PPM 145751 02:36:54.1 +01:05:36 10.2 0.30 59 2893_Peiroos 02:37:02.6 +01:23:28 14.8 59 Positions are for J2000