Occultation event with (4805) Asteropaios, event index number 4375
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/10/10 03:57:41 UTC
J2000 position of star is 04:36:55.6 +30:23:15
Equinox of date position of star is 04:38:37.5 +30:26:24
Star is 119 degrees from the moon. Moon is 0% illuminated.
Stellar brightness G=14.8, apparent brightess of occulting body is G=15.2
Use an exposure time of 0.75 seconds with the standard RECON-QHY system.
SNR of 9.9 per integration for unocculted signal
Expected flux drop is 59% with SNR of 5.8 for the occulted depth (per occulted point)
Apparent velocity is 4.1 km/sec on the sky relative to the star, or, 4.8 arcsec/hr.
Position angle of asteroid motion is 93.0 degrees
The recommended exposure time corresponds to 3.1 km per image.
The 1-sigma error in the time of the event is 0.8 seconds.
The 1-sigma cross-track error in the shadow position is 31.2 km.
The sky-plane scale is 3078.5 km/arcsec.
Diameter estimates:
56.8 km assuming a 5% albedo, maximum of 13.7 sec for a central chord
23.2 km assuming a 30% albedo, maximum of 5.6 sec for a central chord
Cross-track diameter of 57.6 km used for deployment plan.
Star training set for 4805_Asteropaios, (2026/10/10 03:58UT) Object RA Dec mag sep mel Aldebaran 04:37:27.6 +16:33:39 0.8 13.88 120 3Iot Aur 04:58:44.5 +33:12:21 2.7 5.09 114 PPM 093607 04:36:18.8 +29:00:53 5.7 1.51 120 PPM 069546 04:38:56.5 +30:27:04 8.0 0.07 119 4805_Asteropai 04:38:37.5 +30:26:24 15.2 119 Positions are for equinox of date
Star training set for 4805_Asteropaios, (2026/10/10 03:58UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 13.88 120 3Iot Aur 04:56:59.6 +33:09:57 2.7 5.09 114 PPM 093607 04:34:38.0 +28:57:40 5.7 1.51 120 PPM 069546 04:37:14.5 +30:23:57 8.0 0.07 119 4805_Asteropai 04:36:55.6 +30:23:15 15.2 119 Positions are for J2000