Occultation event with (5120) Bitias, event index number 4816
Regions able to see the event: NMexico
Geocentric closest approach at 2026/11/22 08:50:23 UTC
J2000 position of star is 04:37:32.2 +44:14:37
Equinox of date position of star is 04:39:27.7 +44:17:45
Star is 47 degrees from the moon. Moon is 93% illuminated.
Stellar brightness G=14.7, apparent brightess of occulting body is G=15.5
Use an exposure time of 0.60 seconds with the standard RECON-QHY system.
SNR of 9.7 per integration for unocculted signal
Expected flux drop is 68% with SNR of 6.6 for the occulted depth (per occulted point)
Apparent velocity is 17.4 km/sec on the sky relative to the star, or, 19.3 arcsec/hr.
Position angle of asteroid motion is 76.7 degrees
The recommended exposure time corresponds to 10.5 km per image.
The 1-sigma error in the time of the event is 0.1 seconds.
The 1-sigma cross-track error in the shadow position is 36.2 km.
The sky-plane scale is 3245.9 km/arcsec.
Diameter estimates:
50.8 km assuming a 5% albedo, maximum of 2.9 sec for a central chord
20.8 km assuming a 30% albedo, maximum of 1.2 sec for a central chord
Cross-track diameter of 48.0 km used for deployment plan.
Star training set for 5120_Bitias, (2026/11/22 08:50UT) Object RA Dec mag sep mel Aldebaran 04:37:28.0 +16:33:40 0.8 27.74 42 3Iot Aur 04:58:45.0 +33:12:22 2.7 11.70 47 59 Per 04:44:49.2 +43:24:49 5.2 1.31 47 PPM 047235 04:39:44.3 +44:44:55 8.0 0.46 47 PPM 047225 04:39:14.1 +44:11:40 9.5 0.11 47 5120_Bitias 04:39:27.7 +44:17:45 15.5 47 Positions are for equinox of date
Star training set for 5120_Bitias, (2026/11/22 08:50UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 27.74 42 3Iot Aur 04:56:59.6 +33:09:57 2.7 11.70 47 59 Per 04:42:54.4 +43:21:53 5.2 1.31 47 PPM 047235 04:37:48.2 +44:41:48 8.0 0.46 47 PPM 047225 04:37:18.7 +44:08:32 9.5 0.11 47 5120_Bitias 04:37:32.2 +44:14:37 15.5 47 Positions are for J2000