Occultation event with (4060) Deipylos, event index number 3842
Regions able to see the event: Australia
Geocentric closest approach at 2026/07/13 10:29:36 UTC
J2000 position of star is 11:57:09.2 +06:04:09
Equinox of date position of star is 11:58:30.8 +05:55:17
Star is 79 degrees from the moon. Moon is 2% illuminated.
Stellar brightness G=15.5, apparent brightess of occulting body is G=14.9
Use an exposure time of 0.80 seconds with the standard RECON-QHY system.
SNR of 5.4 per integration for unocculted signal
Expected flux drop is 35% with SNR of 1.9 for the occulted depth (per occulted point)
Apparent velocity is 25.3 km/sec on the sky relative to the star, or, 24.3 arcsec/hr.
Position angle of asteroid motion is 110.4 degrees
The recommended exposure time corresponds to 20.3 km per image.
The 1-sigma error in the time of the event is 0.7 seconds.
The 1-sigma cross-track error in the shadow position is 35.8 km.
The sky-plane scale is 3752.8 km/arcsec.
Diameter estimates:
79.8 km assuming a 5% albedo, maximum of 3.2 sec for a central chord
32.6 km assuming a 30% albedo, maximum of 1.3 sec for a central chord
Cross-track diameter of 84.0 km used for deployment plan.
Star training set for 4060_Deipylos, (2026/07/13 10:30UT) Object RA Dec mag sep mel Regulus 10:09:46.9 +11:50:11 1.3 27.48 53 Denebola 11:50:24.7 +14:25:25 2.1 8.73 74 8Pi Vir 12:02:14.0 +06:27:59 4.7 1.07 80 PPM 158355 11:58:09.9 +05:11:49 8.2 0.73 79 PPM 158353 11:57:59.9 +06:08:09 10.0 0.25 79 4060_Deipylos 11:58:30.8 +05:55:17 14.9 80 Positions are for equinox of date
Star training set for 4060_Deipylos, (2026/07/13 10:30UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 27.48 53 Denebola 11:49:02.7 +14:34:16 2.1 8.73 74 8Pi Vir 12:00:52.4 +06:36:51 4.7 1.07 80 PPM 158355 11:56:48.3 +05:20:41 8.2 0.73 79 PPM 158353 11:56:38.2 +06:17:01 10.0 0.25 79 4060_Deipylos 11:57:09.2 +06:04:09 14.9 79 Positions are for J2000