Occultation event with (76867) 00YM5, event index number 4775
Regions able to see the event: Australia
Geocentric closest approach at 2026/11/19 18:58:55 UTC
J2000 position of star is 04:10:01.7 +38:39:24
Equinox of date position of star is 04:11:50.0 +38:43:31
Star is 74 degrees from the moon. Moon is 72% illuminated.
Stellar brightness G=15.6, apparent brightess of occulting body is G=15.3
Use an exposure time of 0.55 seconds with the standard RECON-QHY system.
SNR of 4.3 per integration for unocculted signal
Expected flux drop is 45% with SNR of 1.9 for the occulted depth (per occulted point)
Apparent velocity is 19.1 km/sec on the sky relative to the star, or, 22.5 arcsec/hr.
Position angle of asteroid motion is 100.4 degrees
The recommended exposure time corresponds to 10.5 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 29.5 km.
The sky-plane scale is 3058.3 km/arcsec.
Diameter estimates:
48.3 km assuming a 5% albedo, maximum of 2.5 sec for a central chord
19.7 km assuming a 30% albedo, maximum of 1.0 sec for a central chord
Cross-track diameter of 42.8 km used for deployment plan.
Star training set for 76867_00YM5, (2026/11/19 18:59UT) Object RA Dec mag sep mel Aldebaran 04:37:28.0 +16:33:40 0.8 22.86 76 44Zet Per 03:55:49.7 +31:57:40 2.8 7.51 69 50 Per 04:10:24.6 +38:06:28 5.5 0.68 73 PPM 069177 04:12:24.9 +38:33:18 8.1 0.20 74 76867_00YM5 04:11:50.0 +38:43:31 15.3 74 Positions are for equinox of date
Star training set for 76867_00YM5, (2026/11/19 18:59UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 22.86 76 44Zet Per 03:54:07.9 +31:53:01 2.8 7.51 69 50 Per 04:08:37.0 +38:02:18 5.5 0.68 73 PPM 069177 04:10:36.8 +38:29:12 8.1 0.20 74 76867_00YM5 04:10:01.7 +38:39:24 15.3 74 Positions are for J2000