Occultation event with (2895) Memnon, event index number 4127
Regions able to see the event: SAmericaS
Geocentric closest approach at 2026/08/30 08:39:19 UTC
J2000 position of star is 05:29:12.6 -01:01:20
Equinox of date position of star is 05:30:34.0 -01:00:10
Star is 81 degrees from the moon. Moon is 95% illuminated.
Stellar brightness G=16.6, apparent brightess of occulting body is G=15.6
Use an exposure time of 1.15 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 29% with SNR of 0.9 for the occulted depth (per occulted point)
Apparent velocity is 21.5 km/sec on the sky relative to the star, or, 20.8 arcsec/hr.
Position angle of asteroid motion is 108.2 degrees
The recommended exposure time corresponds to 24.7 km per image.
The 1-sigma error in the time of the event is 0.0 seconds.
The 1-sigma cross-track error in the shadow position is 30.9 km.
The sky-plane scale is 3720.6 km/arcsec.
Diameter estimates:
58.9 km assuming a 5% albedo, maximum of 2.7 sec for a central chord
24.0 km assuming a 30% albedo, maximum of 1.1 sec for a central chord
Cross-track diameter of 56.7 km used for deployment plan.
Star training set for 2895_Memnon, (2026/08/30 08:39UT) Object RA Dec mag sep mel Rigel 05:15:49.2 -08:10:22 0.1 8.06 78 34Del Ori 05:33:22.2 -00:16:53 2.2 1.01 81 PPM 175822 05:26:57.5 -01:28:11 6.5 1.02 80 PPM 175865 05:31:03.2 -00:47:02 7.2 0.25 81 PPM 175863 05:30:54.7 -01:10:11 9.1 0.19 81 31 Ori 05:31:06.3 -01:04:23 10.2 0.15 81 2895_Memnon 05:30:34.0 -01:00:10 15.6 81 Positions are for equinox of date
Star training set for 2895_Memnon, (2026/08/30 08:39UT) Object RA Dec mag sep mel Rigel 05:14:32.3 -08:12:06 0.1 8.06 78 34Del Ori 05:32:00.4 -00:17:57 2.2 1.01 81 PPM 175822 05:25:36.5 -01:29:29 6.5 1.02 80 PPM 175865 05:29:41.7 -00:48:11 7.2 0.25 81 PPM 175863 05:29:33.4 -01:11:20 9.1 0.19 81 31 Ori 05:29:45.0 -01:05:32 10.2 0.15 81 2895_Memnon 05:29:12.6 -01:01:20 15.6 81 Positions are for J2000