Occultation event with (5120) Bitias, event index number 4623
Regions able to see the event: Europe
Geocentric closest approach at 2026/11/09 17:50:28 UTC
J2000 position of star is 04:45:51.3 +44:28:26
Equinox of date position of star is 04:47:47.3 +44:31:15
Star is 152 degrees from the moon. Moon is 0% illuminated.
Stellar brightness G=15.9, apparent brightess of occulting body is G=15.6
Use an exposure time of 0.80 seconds with the standard RECON-QHY system.
SNR of 4.4 per integration for unocculted signal
Expected flux drop is 44% with SNR of 1.9 for the occulted depth (per occulted point)
Apparent velocity is 14.8 km/sec on the sky relative to the star, or, 16.2 arcsec/hr.
Position angle of asteroid motion is 86.2 degrees
The recommended exposure time corresponds to 11.8 km per image.
The 1-sigma error in the time of the event is 0.3 seconds.
The 1-sigma cross-track error in the shadow position is 36.9 km.
The sky-plane scale is 3288.5 km/arcsec.
Diameter estimates:
50.8 km assuming a 5% albedo, maximum of 3.4 sec for a central chord
20.8 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 48.0 km used for deployment plan.
Star training set for 5120_Bitias, (2026/11/09 17:50UT) Object RA Dec mag sep mel Aldebaran 04:37:27.9 +16:33:40 0.8 28.04 160 3Iot Aur 04:58:44.8 +33:12:22 2.7 11.51 155 59 Per 04:44:49.0 +43:24:49 5.2 1.23 153 PPM 047309 04:46:31.4 +44:48:50 7.8 0.37 152 PPM 047319 04:47:29.6 +44:25:02 10.0 0.12 152 5120_Bitias 04:47:47.3 +44:31:15 15.6 151 Positions are for equinox of date
Star training set for 5120_Bitias, (2026/11/09 17:50UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 28.04 160 3Iot Aur 04:56:59.6 +33:09:57 2.7 11.51 155 59 Per 04:42:54.4 +43:21:53 5.2 1.23 153 PPM 047309 04:44:35.0 +44:45:58 7.8 0.37 152 PPM 047319 04:45:33.7 +44:22:12 10.0 0.12 152 5120_Bitias 04:45:51.3 +44:28:26 15.6 152 Positions are for J2000