Occultation event with (5264) Telephus, event index number 867
Regions able to see the event: Europe
Geocentric closest approach at 2025/03/29 21:32:47 UTC
J2000 position of star is 09:19:57.3 +31:53:35
Equinox of date position of star is 09:21:28.3 +31:47:06
Star is 115 degrees from the moon. Moon is 0% illuminated.
Stellar brightness G=13.3, apparent brightess of occulting body is G=14.4
Use an exposure time of 0.15 seconds with the standard RECON-QHY system.
Expected flux drop is 28% with SNR of 9.8 per integration
Apparent velocity is 5.0 km/sec on the sky relative to the star, or, 6.2 arcsec/hr.
The recommended exposure time corresponds to 0.8 km per image.
The 1-sigma error in the time of the event is 7.3 seconds.
The 1-sigma cross-track error in the shadow position is 32.4 km.
The sky-plane scale is 2944.8 km/arcsec.
Diameter estimates:
76.2 km assuming a 5% albedo, aximum of 15.1 sec for a central chord
31.1 km assuming a 30% albedo, maximum of 6.2 sec for a central chord
Cross-track diameter of 76.2 km used for deployment plan.
Star training set for 5264_Telephus, (2025/03/29 21:33UT) Object RA Dec mag sep mel Pollux 07:46:51.4 +27:57:47 1.1 20.82 97 40Alp Lyn 09:22:35.2 +34:17:04 3.1 2.51 114 PPM 074436 09:23:10.4 +32:09:19 7.1 0.52 115 PPM 074404 09:20:25.4 +32:12:36 9.7 0.48 115 PPM 074394 09:19:29.6 +31:34:05 11.2 0.47 115 5264_Telephus 09:21:28.3 +31:47:06 14.4 116 Positions are for equinox of date
Star training set for 5264_Telephus, (2025/03/29 21:33UT) Object RA Dec mag sep mel Pollux 07:45:17.8 +28:01:33 1.1 20.82 97 40Alp Lyn 09:21:02.9 +34:23:34 3.1 2.51 114 PPM 074436 09:21:39.3 +32:15:50 7.1 0.52 115 PPM 074404 09:18:54.1 +32:19:03 9.7 0.48 115 PPM 074394 09:17:58.5 +31:40:30 11.2 0.47 115 5264_Telephus 09:19:57.3 +31:53:35 14.4 115 Positions are for J2000