Occultation event with (15977) 98MA11, event index number 4926
Regions able to see the event: Europe
Geocentric closest approach at 2026/11/29 00:41:49 UTC
J2000 position of star is 03:24:29.4 +09:08:47
Equinox of date position of star is 03:25:56.7 +09:14:24
Star is 77 degrees from the moon. Moon is 74% illuminated.
Stellar brightness G=14.8, apparent brightess of occulting body is G=15.1
Use an exposure time of 0.65 seconds with the standard RECON-QHY system.
SNR of 8.7 per integration for unocculted signal
Expected flux drop is 56% with SNR of 4.9 for the occulted depth (per occulted point)
Apparent velocity is 16.1 km/sec on the sky relative to the star, or, 20.1 arcsec/hr.
Position angle of asteroid motion is 66.3 degrees
The recommended exposure time corresponds to 10.5 km per image.
The 1-sigma error in the time of the event is 0.6 seconds.
The 1-sigma cross-track error in the shadow position is 23.3 km.
The sky-plane scale is 2889.9 km/arcsec.
Diameter estimates:
47.9 km assuming a 5% albedo, maximum of 3.0 sec for a central chord
19.5 km assuming a 30% albedo, maximum of 1.2 sec for a central chord
Cross-track diameter of 43.5 km used for deployment plan.
Star training set for 15977_98MA11, (2026/11/29 00:42UT) Object RA Dec mag sep mel Aldebaran 04:37:28.1 +16:33:40 0.8 18.89 59 Menkar 03:03:41.4 +04:11:37 2.5 7.48 84 1Omi Tau 03:26:15.9 +09:07:18 3.6 0.14 77 PPM 146532 03:26:14.0 +09:54:04 8.5 0.66 77 1Omi Tau 03:26:15.9 +09:07:18 3.6 0.14 77 15977_98MA11 03:25:56.7 +09:14:24 15.1 77 Positions are for equinox of date
Star training set for 15977_98MA11, (2026/11/29 00:42UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 18.89 59 Menkar 03:02:16.8 +04:05:21 2.5 7.48 84 1Omi Tau 03:24:48.7 +09:01:42 3.6 0.14 77 PPM 146532 03:24:46.3 +09:48:27 8.5 0.66 77 1Omi Tau 03:24:48.7 +09:01:42 3.6 0.14 77 15977_98MA11 03:24:29.4 +09:08:47 15.1 77 Positions are for J2000