Occultation event with (4805) Asteropaios, event index number 4709
Regions able to see the event: Europe,SAmericaN
Geocentric closest approach at 2026/11/16 01:40:09 UTC
J2000 position of star is 04:22:10.6 +29:49:15
Equinox of date position of star is 04:23:52.0 +29:52:56
Star is 121 degrees from the moon. Moon is 37% illuminated.
Stellar brightness G=16.3, apparent brightess of occulting body is G=14.7
Use an exposure time of 1.00 seconds with the standard RECON-QHY system.
SNR of 3.1 per integration for unocculted signal
Expected flux drop is 18% with SNR of 0.6 for the occulted depth (per occulted point)
Apparent velocity is 15.7 km/sec on the sky relative to the star, or, 19.8 arcsec/hr.
Position angle of asteroid motion is 75.1 degrees
The recommended exposure time corresponds to 15.7 km per image.
The 1-sigma error in the time of the event is 0.5 seconds.
The 1-sigma cross-track error in the shadow position is 31.2 km.
The sky-plane scale is 2859.6 km/arcsec.
Diameter estimates:
56.8 km assuming a 5% albedo, maximum of 3.6 sec for a central chord
23.2 km assuming a 30% albedo, maximum of 1.5 sec for a central chord
Cross-track diameter of 57.6 km used for deployment plan.
Star training set for 4805_Asteropaios, (2026/11/16 01:40UT) Object RA Dec mag sep mel Aldebaran 04:37:28.0 +16:33:40 0.8 13.68 121 44Zet Per 03:55:49.7 +31:57:40 2.8 6.36 115 PPM 069410 04:27:49.3 +31:29:50 5.3 1.83 122 PPM 093434 04:22:18.5 +28:57:15 8.0 0.99 120 PPM 093449 04:23:37.0 +29:42:42 8.8 0.18 121 PPM 093454 04:24:02.6 +29:53:50 10.4 0.04 121 4805_Asteropai 04:23:52.0 +29:52:56 14.7 121 Positions are for equinox of date
Star training set for 4805_Asteropaios, (2026/11/16 01:40UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 13.68 121 44Zet Per 03:54:07.9 +31:53:01 2.8 6.36 115 PPM 069410 04:26:06.4 +31:26:18 5.3 1.83 122 PPM 093434 04:20:37.8 +28:53:31 8.0 0.99 120 PPM 093449 04:21:55.7 +29:39:01 8.8 0.18 121 PPM 093454 04:22:21.1 +29:50:09 10.4 0.04 121 4805_Asteropai 04:22:10.6 +29:49:15 14.7 121 Positions are for J2000