Occultation event with (11429) Demodokus, event index number 712
Regions able to see the event: Europe
Geocentric closest approach at 2025/02/25 22:57:35 UTC
J2000 position of star is 07:43:23.5 +40:03:19
Equinox of date position of star is 07:45:06.2 +39:59:38
Star is 156 degrees from the moon. Moon is 6% illuminated.
Stellar brightness G=14.6, apparent brightess of occulting body is G=15.7
Use an exposure time of 0.50 seconds with the standard RECON-QHY system.
Expected flux drop is 26% with SNR of 9.5 per integration
Apparent velocity is 10.9 km/sec on the sky relative to the star, or, 12.4 arcsec/hr.
The recommended exposure time corresponds to 5.5 km per image.
The 1-sigma error in the time of the event is 3.5 seconds.
The 1-sigma cross-track error in the shadow position is 27.5 km.
The sky-plane scale is 3163.0 km/arcsec.
Diameter estimates:
47.0 km assuming a 5% albedo, aximum of 4.3 sec for a central chord
19.2 km assuming a 30% albedo, maximum of 1.8 sec for a central chord
Cross-track diameter of 47.0 km used for deployment plan.
Star training set for 11429_Demodokus, (2025/02/25 22:58UT) Object RA Dec mag sep mel Pollux 07:46:51.1 +27:57:48 1.1 12.04 163 PPM 072880 07:33:37.7 +38:50:25 6.5 2.50 155 PPM 073088 07:47:24.4 +39:29:02 7.4 0.68 157 PPM 050097 07:46:42.6 +40:23:21 9.7 0.50 156 PPM 073067 07:45:50.2 +39:51:43 10.2 0.19 156 11429_Demodoku 07:45:06.2 +39:59:38 15.7 156 Positions are for equinox of date
Star training set for 11429_Demodokus, (2025/02/25 22:58UT) Object RA Dec mag sep mel Pollux 07:45:17.8 +28:01:33 1.1 12.04 163 PPM 072880 07:31:55.5 +38:53:44 6.5 2.50 155 PPM 073088 07:45:42.2 +39:32:49 7.4 0.68 157 PPM 050097 07:44:59.6 +40:27:06 9.7 0.50 156 PPM 073067 07:44:07.6 +39:55:26 10.2 0.19 156 11429_Demodoku 07:43:23.5 +40:03:19 15.7 156 Positions are for J2000