Occultation event with (4086) Podalirius, event index number 3357
Regions able to see the event: Europe
Geocentric closest approach at 2026/03/05 20:54:13 UTC
J2000 position of star is 13:42:29.6 +07:21:02
Equinox of date position of star is 13:43:48.1 +07:13:10
Star is 21 degrees from the moon. Moon is 94% illuminated.
Stellar brightness G=15.2, apparent brightess of occulting body is G=14.9
Use an exposure time of 1.45 seconds with the standard RECON-QHY system.
SNR of 9.9 per integration for unocculted signal
Expected flux drop is 41% with SNR of 4.1 for the occulted depth (per occulted point)
Apparent velocity is 13.0 km/sec on the sky relative to the star, or, 13.1 arcsec/hr.
Position angle of asteroid motion is 118.4 degrees
The recommended exposure time corresponds to 18.8 km per image.
The 1-sigma error in the time of the event is 2.5 seconds.
The 1-sigma cross-track error in the shadow position is 12.9 km.
The sky-plane scale is 3581.0 km/arcsec.
Diameter estimates:
83.6 km assuming a 5% albedo, maximum of 6.4 sec for a central chord
34.1 km assuming a 30% albedo, maximum of 2.6 sec for a central chord
Cross-track diameter of 85.5 km used for deployment plan.
Star training set for 4086_Podalirius, (2026/03/05 20:54UT) Object RA Dec mag sep mel Arcturus 14:16:51.4 +19:02:51 0.0 14.30 35 Vindemiatrix 13:03:28.8 +10:49:08 2.8 10.58 20 PPM 159803 13:31:18.9 +07:02:40 6.2 3.10 19 PPM 159981 13:43:30.4 +08:15:24 6.6 1.04 22 PPM 160000 13:44:33.6 +07:10:07 9.7 0.19 21 PPM 159991 13:44:01.5 +07:20:46 10.7 0.14 21 4086_Podaliriu 13:43:48.1 +07:13:10 14.9 21 Positions are for equinox of date
Star training set for 4086_Podalirius, (2026/03/05 20:54UT) Object RA Dec mag sep mel Arcturus 14:15:37.7 +19:10:06 0.0 14.30 35 Vindemiatrix 13:02:10.1 +10:57:33 2.8 10.58 20 PPM 159803 13:30:00.1 +07:10:44 6.2 3.10 19 PPM 159981 13:42:12.1 +08:23:16 6.6 1.04 22 PPM 160000 13:43:15.1 +07:17:59 9.7 0.19 21 PPM 159991 13:42:43.0 +07:28:38 10.7 0.14 21 4086_Podaliriu 13:42:29.6 +07:21:02 14.9 21 Positions are for J2000