Occultation event with (4060) Deipylos, event index number 3711
Regions able to see the event: SAfrica
Geocentric closest approach at 2026/05/03 18:18:06 UTC
J2000 position of star is 11:37:49.6 +07:16:38
Equinox of date position of star is 11:39:11.0 +07:07:53
Star is 74 degrees from the moon. Moon is 96% illuminated.
Stellar brightness G=15.6, apparent brightess of occulting body is G=14.3
Use an exposure time of 2.00 seconds with the standard RECON-QHY system.
SNR of 8.1 per integration for unocculted signal
Expected flux drop is 23% with SNR of 1.9 for the occulted depth (per occulted point)
Apparent velocity is 5.8 km/sec on the sky relative to the star, or, 7.0 arcsec/hr.
Position angle of asteroid motion is 135.8 degrees
The recommended exposure time corresponds to 11.5 km per image.
The 1-sigma error in the time of the event is 5.6 seconds.
The 1-sigma cross-track error in the shadow position is 24.5 km.
The sky-plane scale is 2959.9 km/arcsec.
Diameter estimates:
79.8 km assuming a 5% albedo, maximum of 13.8 sec for a central chord
32.6 km assuming a 30% albedo, maximum of 5.7 sec for a central chord
Cross-track diameter of 84.0 km used for deployment plan.
Star training set for 4060_Deipylos, (2026/05/03 18:18UT) Object RA Dec mag sep mel Regulus 10:09:46.3 +11:50:15 1.3 22.53 96 Denebola 11:50:24.1 +14:25:29 2.1 7.80 76 1Ome Vir 11:39:49.0 +07:59:18 6.5 0.87 75 PPM 158063 11:40:08.1 +07:14:59 9.8 0.26 74 PPM 158042 11:39:02.2 +07:11:37 10.9 0.07 74 4060_Deipylos 11:39:11.0 +07:07:53 14.3 74 Positions are for equinox of date
Star training set for 4060_Deipylos, (2026/05/03 18:18UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 22.53 96 Denebola 11:49:02.7 +14:34:16 2.1 7.80 76 1Ome Vir 11:38:27.6 +08:08:04 6.5 0.87 75 PPM 158063 11:38:46.7 +07:23:45 9.8 0.26 74 PPM 158042 11:37:40.8 +07:20:22 10.9 0.07 74 4060_Deipylos 11:37:49.6 +07:16:38 14.3 74 Positions are for J2000