Occultation event with (5120) Bitias, event index number 1048
Regions able to see the event: Europe
Geocentric closest approach at 2025/06/11 01:45:01 UTC
J2000 position of star is 01:28:36.3 +33:17:25
Equinox of date position of star is 01:30:03.0 +33:25:16
Star is 134 degrees from the moon. Moon is 100% illuminated.
Stellar brightness G=13.5, apparent brightess of occulting body is G=16.0
Use an exposure time of 0.17 seconds with the standard RECON-QHY system.
SNR of 9.9 per integration for unocculted signal
Expected flux drop is 91% with SNR of 9.0 for the occulted depth (per occulted point)
Apparent velocity is 34.4 km/sec on the sky relative to the star, or, 30.9 arcsec/hr.
The recommended exposure time corresponds to 5.8 km per image.
The 1-sigma error in the time of the event is 1.4 seconds.
The 1-sigma cross-track error in the shadow position is 43.6 km.
The sky-plane scale is 4010.7 km/arcsec.
Diameter estimates:
50.8 km assuming a 5% albedo, aximum of 1.5 sec for a central chord
20.8 km assuming a 30% albedo, maximum of 0.6 sec for a central chord
Cross-track diameter of 50.8 km used for deployment plan.
Star training set for 5120_Bitias, (2025/06/11 01:45UT) Object RA Dec mag sep mel Aldebaran 04:37:23.0 +16:33:30 0.8 45.23 167 57Gam1And 02:05:28.4 +42:27:02 2.3 11.40 141 PPM 066368 01:33:35.1 +34:55:49 6.4 1.68 135 PPM 066372 01:33:39.8 +32:40:19 8.5 1.07 134 PPM 066305 01:29:21.8 +33:20:35 9.9 0.16 134 5120_Bitias 01:30:03.0 +33:25:16 16.0 134 Positions are for equinox of date
Star training set for 5120_Bitias, (2025/06/11 01:45UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 45.23 167 57Gam1And 02:03:54.1 +42:19:46 2.3 11.40 141 PPM 066368 01:32:07.6 +34:48:00 6.4 1.68 135 PPM 066372 01:32:12.9 +32:32:31 8.5 1.07 134 PPM 066305 01:27:55.1 +33:12:42 9.9 0.16 134 5120_Bitias 01:28:36.3 +33:17:25 16.0 134 Positions are for J2000