Occultation event with (5120) Bitias, event index number 4963
Regions able to see the event: Europe
Geocentric closest approach at 2026/11/30 22:07:52 UTC
J2000 position of star is 04:31:26.8 +43:55:24
Equinox of date position of star is 04:33:21.8 +43:58:45
Star is 82 degrees from the moon. Moon is 54% illuminated.
Stellar brightness G=16.6, apparent brightess of occulting body is G=15.4
Use an exposure time of 1.20 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 26% with SNR of 0.8 for the occulted depth (per occulted point)
Apparent velocity is 18.4 km/sec on the sky relative to the star, or, 20.5 arcsec/hr.
Position angle of asteroid motion is 70.8 degrees
The recommended exposure time corresponds to 22.1 km per image.
The 1-sigma error in the time of the event is 0.4 seconds.
The 1-sigma cross-track error in the shadow position is 37.2 km.
The sky-plane scale is 3235.4 km/arcsec.
Diameter estimates:
50.8 km assuming a 5% albedo, maximum of 2.8 sec for a central chord
20.8 km assuming a 30% albedo, maximum of 1.1 sec for a central chord
Cross-track diameter of 48.0 km used for deployment plan.
Star training set for 5120_Bitias, (2026/11/30 22:08UT) Object RA Dec mag sep mel Aldebaran 04:37:28.1 +16:33:40 0.8 27.43 85 3Iot Aur 04:58:45.1 +33:12:22 2.7 11.85 78 59 Per 04:44:49.3 +43:24:49 5.2 2.15 80 PPM 047130 04:32:48.5 +44:39:32 7.7 0.69 83 PPM 047144 04:33:58.8 +43:46:18 9.9 0.24 82 5120_Bitias 04:33:21.8 +43:58:45 15.4 82 Positions are for equinox of date
Star training set for 5120_Bitias, (2026/11/30 22:08UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 27.43 85 3Iot Aur 04:56:59.6 +33:09:57 2.7 11.85 78 59 Per 04:42:54.4 +43:21:53 5.2 2.15 80 PPM 047130 04:30:52.8 +44:36:10 7.7 0.69 83 PPM 047144 04:32:04.1 +43:42:58 9.9 0.24 82 5120_Bitias 04:31:26.8 +43:55:24 15.4 82 Positions are for J2000