Occultation event with (15977) 98MA11, event index number 4607
Regions able to see the event: Australia
Geocentric closest approach at 2026/11/08 13:38:00 UTC
J2000 position of star is 03:35:07.2 +10:24:46
Equinox of date position of star is 03:36:35.1 +10:30:03
Star is 159 degrees from the moon. Moon is 1% illuminated.
Stellar brightness G=15.3, apparent brightess of occulting body is G=15.0
Use an exposure time of 0.60 seconds with the standard RECON-QHY system.
SNR of 5.5 per integration for unocculted signal
Expected flux drop is 43% with SNR of 2.4 for the occulted depth (per occulted point)
Apparent velocity is 17.2 km/sec on the sky relative to the star, or, 21.5 arcsec/hr.
Position angle of asteroid motion is 61.8 degrees
The recommended exposure time corresponds to 10.3 km per image.
The 1-sigma error in the time of the event is 0.7 seconds.
The 1-sigma cross-track error in the shadow position is 23.3 km.
The sky-plane scale is 2873.9 km/arcsec.
Diameter estimates:
47.9 km assuming a 5% albedo, maximum of 2.8 sec for a central chord
19.5 km assuming a 30% albedo, maximum of 1.1 sec for a central chord
Cross-track diameter of 43.5 km used for deployment plan.
Star training set for 15977_98MA11, (2026/11/08 13:38UT) Object RA Dec mag sep mel Aldebaran 04:37:27.9 +16:33:40 0.8 15.98 146 Menkar 03:03:41.2 +04:11:37 2.5 10.31 162 6 Tau 03:34:03.3 +09:27:44 5.6 1.21 159 PPM 119201 03:36:31.7 +11:08:01 8.2 0.63 159 PPM 119215 03:37:58.6 +10:16:21 9.1 0.41 159 PPM 119208 03:37:44.4 +10:25:02 11.8 0.30 159 15977_98MA11 03:36:35.1 +10:30:03 15.0 159 Positions are for equinox of date
Star training set for 15977_98MA11, (2026/11/08 13:38UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 15.98 146 Menkar 03:02:16.8 +04:05:21 2.5 10.31 162 6 Tau 03:32:35.9 +09:22:23 5.6 1.21 159 PPM 119201 03:35:03.4 +11:02:45 8.2 0.63 159 PPM 119215 03:36:30.8 +10:11:07 9.1 0.41 159 PPM 119208 03:36:16.5 +10:19:48 11.8 0.30 159 15977_98MA11 03:35:07.2 +10:24:46 15.0 159 Positions are for J2000