Occultation event with (6002) Eetion, event index number 1703
Regions able to see the event: Europe
Geocentric closest approach at 2025/12/20 22:12:58 UTC
J2000 position of star is 02:55:50.1 +09:09:36
Equinox of date position of star is 02:57:13.9 +09:15:50
Star is 124 degrees from the moon. Moon is 1% illuminated.
Stellar brightness G=15.1, apparent brightess of occulting body is G=15.5
Use an exposure time of 1.00 seconds with the standard RECON-QHY system.
SNR of 9.7 per integration for unocculted signal
Expected flux drop is 59% with SNR of 5.7 for the occulted depth (per occulted point)
Apparent velocity is 8.1 km/sec on the sky relative to the star, or, 9.7 arcsec/hr.
Position angle of asteroid motion is 66.3 degrees
The recommended exposure time corresponds to 8.1 km per image.
The 1-sigma error in the time of the event is 1.8 seconds.
The 1-sigma cross-track error in the shadow position is 31.5 km.
The sky-plane scale is 2983.0 km/arcsec.
Diameter estimates:
46.1 km assuming a 5% albedo, aximum of 5.7 sec for a central chord
18.8 km assuming a 30% albedo, maximum of 2.3 sec for a central chord
Cross-track diameter of 40.4 km used for deployment plan.
Star training set for 6002_Eetion, (2025/12/20 22:13UT) Object RA Dec mag sep mel Aldebaran 04:37:24.8 +16:33:34 0.8 25.45 149 Menkar 03:03:38.4 +04:11:24 2.5 5.32 123 PPM 146068 02:57:37.3 +08:29:04 6.3 0.79 124 PPM 146018 02:55:10.1 +09:26:25 7.9 0.54 124 PPM 146046 02:56:38.3 +09:12:56 9.9 0.15 124 6002_Eetion 02:57:13.9 +09:15:50 15.5 125 Positions are for equinox of date
Star training set for 6002_Eetion, (2025/12/20 22:13UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 25.45 149 Menkar 03:02:16.8 +04:05:21 2.5 5.32 123 PPM 146068 02:56:13.9 +08:22:51 6.3 0.79 124 PPM 146018 02:53:46.3 +09:20:09 7.9 0.54 124 PPM 146046 02:55:14.6 +09:06:42 9.9 0.15 124 6002_Eetion 02:55:50.1 +09:09:36 15.5 124 Positions are for J2000