Occultation event with (4086) Podalirius, event index number 3434
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/03/15 06:08:50 UTC
J2000 position of star is 13:39:10.7 +07:44:32
Equinox of date position of star is 13:40:29.2 +07:36:36
Star is 108 degrees from the moon. Moon is 16% illuminated.
Stellar brightness G=16.5, apparent brightess of occulting body is G=14.8
Use an exposure time of 1.35 seconds with the standard RECON-QHY system.
SNR of 3.2 per integration for unocculted signal
Expected flux drop is 17% with SNR of 0.5 for the occulted depth (per occulted point)
Apparent velocity is 15.6 km/sec on the sky relative to the star, or, 15.9 arcsec/hr.
Position angle of asteroid motion is 112.9 degrees
The recommended exposure time corresponds to 21.1 km per image.
The 1-sigma error in the time of the event is 2.0 seconds.
The 1-sigma cross-track error in the shadow position is 16.1 km.
The sky-plane scale is 3528.9 km/arcsec.
Diameter estimates:
83.6 km assuming a 5% albedo, maximum of 5.3 sec for a central chord
34.1 km assuming a 30% albedo, maximum of 2.2 sec for a central chord
Cross-track diameter of 85.5 km used for deployment plan.
Star training set for 4086_Podalirius, (2026/03/15 06:09UT) Object RA Dec mag sep mel Arcturus 14:16:51.5 +19:02:51 0.0 14.45 103 Vindemiatrix 13:03:28.9 +10:49:08 2.8 9.68 117 PPM 159803 13:31:19.0 +07:02:39 6.2 2.34 110 PPM 159981 13:43:30.5 +08:15:23 6.6 0.99 107 PPM 159962 13:42:18.0 +06:55:00 10.0 0.83 107 PPM 159945 13:40:33.1 +07:33:05 10.8 0.06 108 4086_Podaliriu 13:40:29.2 +07:36:36 14.8 107 Positions are for equinox of date
Star training set for 4086_Podalirius, (2026/03/15 06:09UT) Object RA Dec mag sep mel Arcturus 14:15:37.7 +19:10:06 0.0 14.45 103 Vindemiatrix 13:02:10.1 +10:57:33 2.8 9.68 117 PPM 159803 13:30:00.1 +07:10:44 6.2 2.34 110 PPM 159981 13:42:12.1 +08:23:16 6.6 0.99 107 PPM 159962 13:40:59.3 +07:02:55 10.0 0.83 107 PPM 159945 13:39:14.5 +07:41:02 10.8 0.06 108 4086_Podaliriu 13:39:10.7 +07:44:32 14.8 108 Positions are for J2000