Occultation event with (1749) Telamon, event index number 3436
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/03/15 08:30:50 UTC
J2000 position of star is 12:12:01.9 -04:21:38
Equinox of date position of star is 12:13:22.6 -04:30:22
Star is 124 degrees from the moon. Moon is 15% illuminated.
Stellar brightness G=15.3, apparent brightess of occulting body is G=14.1
Use an exposure time of 0.95 seconds with the standard RECON-QHY system.
SNR of 6.6 per integration for unocculted signal
Expected flux drop is 25% with SNR of 1.6 for the occulted depth (per occulted point)
Apparent velocity is 16.3 km/sec on the sky relative to the star, or, 19.9 arcsec/hr.
Position angle of asteroid motion is 108.0 degrees
The recommended exposure time corresponds to 15.5 km per image.
The 1-sigma error in the time of the event is 1.6 seconds.
The 1-sigma cross-track error in the shadow position is 23.6 km.
The sky-plane scale is 2953.8 km/arcsec.
Diameter estimates:
76.9 km assuming a 5% albedo, maximum of 4.7 sec for a central chord
31.4 km assuming a 30% albedo, maximum of 1.9 sec for a central chord
Cross-track diameter of 64.9 km used for deployment plan.
Star training set for 1749_Telamon, (2026/03/15 08:31UT) Object RA Dec mag sep mel Spica 13:26:34.6 -11:17:50 1.0 19.34 105 4Gam Crv 12:17:09.5 -17:41:14 2.6 13.21 117 PPM 178683 12:07:20.4 -03:16:39 6.4 1.94 126 PPM 195254 12:13:35.0 -04:32:52 7.9 0.07 124 1749_Telamon 12:13:22.6 -04:30:22 14.1 124 Positions are for equinox of date
Star training set for 1749_Telamon, (2026/03/15 08:31UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 19.34 105 4Gam Crv 12:15:48.1 -17:32:30 2.6 13.21 117 PPM 178683 12:05:59.8 -03:07:54 6.4 1.94 126 PPM 195254 12:12:14.3 -04:24:08 7.9 0.07 124 1749_Telamon 12:12:01.9 -04:21:38 14.1 124 Positions are for J2000