Occultation event with (5264) Telephus, event index number 3271
Regions able to see the event: Australia
Geocentric closest approach at 2026/02/19 20:18:33 UTC
J2000 position of star is 13:02:15.6 +30:05:07
Equinox of date position of star is 13:03:30.5 +29:56:43
Star is 145 degrees from the moon. Moon is 6% illuminated.
Stellar brightness G=14.0, apparent brightess of occulting body is G=14.3
Use an exposure time of 0.30 seconds with the standard RECON-QHY system.
SNR of 9.5 per integration for unocculted signal
Expected flux drop is 58% with SNR of 5.5 for the occulted depth (per occulted point)
Apparent velocity is 17.7 km/sec on the sky relative to the star, or, 21.4 arcsec/hr.
Position angle of asteroid motion is 161.2 degrees
The recommended exposure time corresponds to 5.3 km per image.
The 1-sigma error in the time of the event is 2.2 seconds.
The 1-sigma cross-track error in the shadow position is 5.3 km.
The sky-plane scale is 2964.5 km/arcsec.
Diameter estimates:
77.3 km assuming a 5% albedo, maximum of 4.4 sec for a central chord
31.5 km assuming a 30% albedo, maximum of 1.8 sec for a central chord
Cross-track diameter of 68.5 km used for deployment plan.
Star training set for 5264_Telephus, (2026/02/19 20:19UT) Object RA Dec mag sep mel Arcturus 14:16:51.3 +19:02:52 0.0 19.88 140 Vindemiatrix 13:03:28.7 +10:49:09 2.8 19.13 160 37 Com 13:01:31.4 +30:38:41 6.1 0.82 144 PPM 076885 13:03:35.6 +30:13:04 8.4 0.27 144 PPM 076879 13:02:49.4 +29:55:44 11.2 0.15 145 5264_Telephus 13:03:30.5 +29:56:43 14.3 145 Positions are for equinox of date
Star training set for 5264_Telephus, (2026/02/19 20:19UT) Object RA Dec mag sep mel Arcturus 14:15:37.7 +19:10:06 0.0 19.88 140 Vindemiatrix 13:02:10.1 +10:57:33 2.8 19.13 160 37 Com 13:00:16.4 +30:47:06 6.1 0.82 144 PPM 076885 13:02:20.7 +30:21:28 8.4 0.27 144 PPM 076879 13:01:34.5 +30:04:08 11.2 0.15 145 5264_Telephus 13:02:15.6 +30:05:07 14.3 145 Positions are for J2000