Occultation event with (5511) Cloanthus, event index number 797
Regions able to see the event: Japan
Geocentric closest approach at 2025/03/11 09:50:53 UTC
J2000 position of star is 02:00:06.6 +04:57:10
Equinox of date position of star is 02:01:25.5 +05:04:26
Star is 109 degrees from the moon. Moon is 92% illuminated.
Stellar brightness G=14.2, apparent brightess of occulting body is G=16.2
Use an exposure time of 0.30 seconds with the standard RECON-QHY system.
Expected flux drop is 13% with SNR of 9.0 per integration
Apparent velocity is 35.7 km/sec on the sky relative to the star, or, 29.4 arcsec/hr.
The recommended exposure time corresponds to 10.7 km per image.
The 1-sigma error in the time of the event is 1.2 seconds.
The 1-sigma cross-track error in the shadow position is 19.5 km.
The sky-plane scale is 4381.1 km/arcsec.
Diameter estimates:
51.0 km assuming a 5% albedo, aximum of 1.4 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 51.0 km used for deployment plan.
Star training set for 5511_Cloanthus, (2025/03/11 09:51UT) Object RA Dec mag sep mel Aldebaran 04:37:22.2 +16:33:28 0.8 39.88 69 68Omi Cet 02:20:37.3 -02:51:52 2.0 9.27 107 112 Psc 02:01:27.9 +03:12:59 6.2 1.86 110 PPM 145203 02:01:40.6 +04:30:38 8.1 0.57 109 PPM 145213 02:02:27.0 +05:27:27 8.7 0.46 109 PPM 145175 02:00:24.8 +05:13:45 10.8 0.30 109 5511_Cloanthus 02:01:25.5 +05:04:26 16.2 109 Positions are for equinox of date
Star training set for 5511_Cloanthus, (2025/03/11 09:51UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 39.88 69 68Omi Cet 02:19:20.8 -02:58:46 2.0 9.27 107 112 Psc 02:00:09.5 +03:05:43 6.2 1.86 110 PPM 145203 02:00:21.8 +04:23:22 8.1 0.57 109 PPM 145213 02:01:07.9 +05:20:12 8.7 0.46 109 PPM 145175 01:59:05.8 +05:06:28 10.8 0.30 109 5511_Cloanthus 02:00:06.6 +04:57:10 16.2 109 Positions are for J2000