Occultation event with (2223) Sarpedon, event index number 4928
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/11/29 01:42:23 UTC
J2000 position of star is 05:29:03.9 +10:57:59
Equinox of date position of star is 05:30:33.6 +10:59:10
Star is 48 degrees from the moon. Moon is 74% illuminated.
Stellar brightness G=15.4, apparent brightess of occulting body is G=14.1
Use an exposure time of 1.10 seconds with the standard RECON-QHY system.
SNR of 6.3 per integration for unocculted signal
Expected flux drop is 23% with SNR of 1.4 for the occulted depth (per occulted point)
Apparent velocity is 17.2 km/sec on the sky relative to the star, or, 19.4 arcsec/hr.
Position angle of asteroid motion is 72.4 degrees
The recommended exposure time corresponds to 18.9 km per image.
The 1-sigma error in the time of the event is 0.4 seconds.
The 1-sigma cross-track error in the shadow position is 45.5 km.
The sky-plane scale is 3197.1 km/arcsec.
Diameter estimates:
90.4 km assuming a 5% albedo, maximum of 5.3 sec for a central chord
36.9 km assuming a 30% albedo, maximum of 2.1 sec for a central chord
Cross-track diameter of 77.5 km used for deployment plan.
Star training set for 2223_Sarpedon, (2026/11/29 01:42UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.8 +07:24:35 0.4 7.36 43 Bellatrix 05:26:34.6 +06:22:18 1.6 4.72 50 PPM 121138 05:36:42.4 +10:15:20 5.7 1.68 47 PPM 121036 05:32:22.9 +10:10:53 7.1 0.92 48 PPM 121023 05:31:47.2 +11:02:25 8.8 0.31 48 2223_Sarpedon 05:30:33.6 +10:59:10 14.1 48 Positions are for equinox of date
Star training set for 2223_Sarpedon, (2026/11/29 01:42UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 7.36 43 Bellatrix 05:25:07.8 +06:20:58 1.6 4.72 50 PPM 121138 05:35:13.2 +10:14:24 5.7 1.68 47 PPM 121036 05:30:53.7 +10:09:46 7.1 0.92 48 PPM 121023 05:30:17.5 +11:01:17 8.8 0.31 48 2223_Sarpedon 05:29:03.9 +10:57:59 14.1 48 Positions are for J2000