Occultation event with (4835) Asaeus, event index number 3544
Regions able to see the event: Australia,NZ
Geocentric closest approach at 2026/03/30 16:03:50 UTC
J2000 position of star is 14:41:11.9 +09:30:43
Equinox of date position of star is 14:42:28.8 +09:24:03
Star is 57 degrees from the moon. Moon is 94% illuminated.
Stellar brightness G=15.1, apparent brightess of occulting body is G=15.3
Use an exposure time of 0.50 seconds with the standard RECON-QHY system.
SNR of 5.8 per integration for unocculted signal
Expected flux drop is 55% with SNR of 3.2 for the occulted depth (per occulted point)
Apparent velocity is 14.4 km/sec on the sky relative to the star, or, 18.1 arcsec/hr.
Position angle of asteroid motion is 129.6 degrees
The recommended exposure time corresponds to 7.2 km per image.
The 1-sigma error in the time of the event is 2.2 seconds.
The 1-sigma cross-track error in the shadow position is 18.8 km.
The sky-plane scale is 2880.0 km/arcsec.
Diameter estimates:
45.7 km assuming a 5% albedo, maximum of 3.2 sec for a central chord
18.7 km assuming a 30% albedo, maximum of 1.3 sec for a central chord
Cross-track diameter of 30.2 km used for deployment plan.
Star training set for 4835_Asaeus, (2026/03/30 16:04UT) Object RA Dec mag sep mel Arcturus 14:16:51.6 +19:02:50 0.0 11.47 51 Unukalhai 15:45:33.8 +06:20:41 2.6 15.92 73 31 Boo 14:42:56.2 +08:03:03 5.8 1.35 57 PPM 160863 14:41:55.4 +08:51:59 8.4 0.55 57 PPM 160874 14:43:01.4 +09:25:01 8.6 0.14 57 4835_Asaeus 14:42:28.8 +09:24:03 15.3 57 Positions are for equinox of date
Star training set for 4835_Asaeus, (2026/03/30 16:04UT) Object RA Dec mag sep mel Arcturus 14:15:37.7 +19:10:06 0.0 11.47 51 Unukalhai 15:44:16.3 +06:25:34 2.6 15.92 73 31 Boo 14:41:38.7 +08:09:42 5.8 1.35 57 PPM 160863 14:40:38.3 +08:58:40 8.4 0.55 57 PPM 160874 14:41:44.5 +09:31:41 8.6 0.14 57 4835_Asaeus 14:41:11.9 +09:30:43 15.3 57 Positions are for J2000