Occultation event with (13060) 91EJ, event index number 3331
Regions able to see the event: NZ
Geocentric closest approach at 2026/03/02 09:10:35 UTC
J2000 position of star is 10:37:51.8 -19:05:45
Equinox of date position of star is 10:39:08.0 -19:13:56
Star is 33 degrees from the moon. Moon is 99% illuminated.
Stellar brightness G=14.9, apparent brightess of occulting body is G=16.2
Use an exposure time of 0.45 seconds with the standard RECON-QHY system.
SNR of 6.7 per integration for unocculted signal
Expected flux drop is 76% with SNR of 5.1 for the occulted depth (per occulted point)
Apparent velocity is 18.4 km/sec on the sky relative to the star, or, 19.1 arcsec/hr.
Position angle of asteroid motion is 103.5 degrees
The recommended exposure time corresponds to 8.3 km per image.
The 1-sigma error in the time of the event is 1.5 seconds.
The 1-sigma cross-track error in the shadow position is 26.2 km.
The sky-plane scale is 3463.9 km/arcsec.
Diameter estimates:
41.9 km assuming a 5% albedo, maximum of 2.3 sec for a central chord
17.1 km assuming a 30% albedo, maximum of 0.9 sec for a central chord
Cross-track diameter of 36.1 km used for deployment plan.
Star training set for 13060_91EJ, (2026/03/02 09:11UT) Object RA Dec mag sep mel Regulus 10:09:45.8 +11:50:18 1.3 31.90 2 Alphard 09:28:52.4 -08:46:24 2.0 19.97 23 Phi3Hya 10:39:51.6 -17:00:47 4.9 2.23 31 PPM 223265 10:40:29.9 -18:34:41 8.4 0.73 33 PPM 223233 10:39:02.6 -19:16:22 9.2 0.05 33 13060_91EJ 10:39:08.0 -19:13:56 16.2 34 Positions are for equinox of date
Star training set for 13060_91EJ, (2026/03/02 09:11UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 31.90 2 Alphard 09:27:35.2 -08:39:30 2.0 19.97 23 Phi3Hya 10:38:34.8 -16:52:35 4.9 2.23 31 PPM 223265 10:39:13.5 -18:26:29 8.4 0.73 33 PPM 223233 10:37:46.4 -19:08:10 9.2 0.05 33 13060_91EJ 10:37:51.8 -19:05:45 16.2 33 Positions are for J2000