Occultation event with (2895) Memnon, event index number 1617
Regions able to see the event: SAmericaN
Geocentric closest approach at 2025/11/30 06:15:37 UTC
J2000 position of star is 02:52:46.7 -17:36:40
Equinox of date position of star is 02:53:58.9 -17:30:23
Star is 45 degrees from the moon. Moon is 71% illuminated.
Stellar brightness G=12.9, apparent brightess of occulting body is G=15.1
Use an exposure time of 0.12 seconds with the standard RECON-QHY system.
SNR of 11.4 per integration for unocculted signal
Expected flux drop is 88% with SNR of 10.0 for the occulted depth (per occulted point)
Apparent velocity is 14.0 km/sec on the sky relative to the star, or, 16.3 arcsec/hr.
Position angle of asteroid motion is 104.3 degrees
The recommended exposure time corresponds to 1.7 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 28.7 km.
The sky-plane scale is 3074.7 km/arcsec.
Diameter estimates:
58.9 km assuming a 5% albedo, aximum of 4.2 sec for a central chord
24.0 km assuming a 30% albedo, maximum of 1.7 sec for a central chord
Cross-track diameter of 56.7 km used for deployment plan.
Star training set for 2895_Memnon, (2025/11/30 06:16UT) Object RA Dec mag sep mel Rigel 05:15:47.1 -08:10:25 0.1 35.73 77 68Omi Cet 02:20:39.5 -02:51:41 2.0 16.77 33 1Tau1Eri 02:46:18.8 -18:27:51 4.6 2.06 44 PPM 212096 02:53:02.2 -17:08:45 8.0 0.43 45 PPM 212111 02:53:35.1 -17:25:20 9.5 0.13 45 2895_Memnon 02:53:58.9 -17:30:23 15.1 46 Positions are for equinox of date
Star training set for 2895_Memnon, (2025/11/30 06:16UT) Object RA Dec mag sep mel Rigel 05:14:32.3 -08:12:06 0.1 35.73 77 68Omi Cet 02:19:20.8 -02:58:46 2.0 16.77 33 1Tau1Eri 02:45:06.8 -18:34:21 4.6 2.06 44 PPM 212096 02:51:49.8 -17:15:04 8.0 0.43 45 PPM 212111 02:52:22.9 -17:31:38 9.5 0.13 45 2895_Memnon 02:52:46.7 -17:36:40 15.1 45 Positions are for J2000