Occultation event with (5264) Telephus, event index number 3745
Regions able to see the event: Australia
Geocentric closest approach at 2026/05/14 11:49:39 UTC
J2000 position of star is 12:26:59.8 +34:18:19
Equinox of date position of star is 12:28:18.0 +34:09:34
Star is 133 degrees from the moon. Moon is 8% illuminated.
Stellar brightness G=14.8, apparent brightess of occulting body is G=14.6
Use an exposure time of 0.85 seconds with the standard RECON-QHY system.
SNR of 9.9 per integration for unocculted signal
Expected flux drop is 46% with SNR of 4.6 for the occulted depth (per occulted point)
Apparent velocity is 9.4 km/sec on the sky relative to the star, or, 10.5 arcsec/hr.
Position angle of asteroid motion is 34.9 degrees
The recommended exposure time corresponds to 8.0 km per image.
The 1-sigma error in the time of the event is 3.2 seconds.
The 1-sigma cross-track error in the shadow position is 26.0 km.
The sky-plane scale is 3217.6 km/arcsec.
Diameter estimates:
77.3 km assuming a 5% albedo, maximum of 8.2 sec for a central chord
31.5 km assuming a 30% albedo, maximum of 3.4 sec for a central chord
Cross-track diameter of 68.5 km used for deployment plan.
Star training set for 5264_Telephus, (2026/05/14 11:50UT) Object RA Dec mag sep mel Arcturus 14:16:52.0 +19:02:48 0.0 28.44 146 Phad 11:55:12.3 +53:32:53 2.4 20.25 113 PPM 076567 12:34:56.6 +33:06:08 5.4 1.74 134 PPM 076510 12:30:32.7 +34:33:29 8.2 0.61 133 PPM 076498 12:29:43.6 +34:28:45 9.7 0.43 133 5264_Telephus 12:28:18.0 +34:09:34 14.6 133 Positions are for equinox of date
Star training set for 5264_Telephus, (2026/05/14 11:50UT) Object RA Dec mag sep mel Arcturus 14:15:37.7 +19:10:06 0.0 28.44 146 Phad 11:53:50.1 +53:41:41 2.4 20.25 113 PPM 076567 12:33:39.0 +33:14:50 5.4 1.74 134 PPM 076510 12:29:14.8 +34:42:13 8.2 0.61 133 PPM 076498 12:28:25.6 +34:37:29 9.7 0.43 133 5264_Telephus 12:26:59.8 +34:18:19 14.6 133 Positions are for J2000