Occultation event with (1749) Telamon, event index number 3629
Regions able to see the event: NZ
Geocentric closest approach at 2026/04/14 07:33:57 UTC
J2000 position of star is 11:57:16.2 -03:03:47
Equinox of date position of star is 11:58:37.0 -03:12:34
Star is 162 degrees from the moon. Moon is 13% illuminated.
Stellar brightness G=16.2, apparent brightess of occulting body is G=14.3
Use an exposure time of 1.10 seconds with the standard RECON-QHY system.
SNR of 3.5 per integration for unocculted signal
Expected flux drop is 15% with SNR of 0.5 for the occulted depth (per occulted point)
Apparent velocity is 14.2 km/sec on the sky relative to the star, or, 17.1 arcsec/hr.
Position angle of asteroid motion is 110.6 degrees
The recommended exposure time corresponds to 15.7 km per image.
The 1-sigma error in the time of the event is 1.8 seconds.
The 1-sigma cross-track error in the shadow position is 21.9 km.
The sky-plane scale is 3005.3 km/arcsec.
Diameter estimates:
76.9 km assuming a 5% albedo, maximum of 5.4 sec for a central chord
31.4 km assuming a 30% albedo, maximum of 2.2 sec for a central chord
Cross-track diameter of 64.9 km used for deployment plan.
Star training set for 1749_Telamon, (2026/04/14 07:34UT) Object RA Dec mag sep mel Spica 13:26:34.9 -11:17:52 1.0 23.25 139 4Gam Crv 12:17:09.7 -17:41:16 2.6 15.18 149 PPM 178683 12:07:20.6 -03:16:41 6.4 2.18 160 PPM 195036 12:00:35.4 -03:28:09 7.6 0.56 161 PPM 194985 11:57:56.1 -03:19:55 9.8 0.21 162 1749_Telamon 11:58:37.0 -03:12:34 14.3 161 Positions are for equinox of date
Star training set for 1749_Telamon, (2026/04/14 07:34UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 23.25 139 4Gam Crv 12:15:48.1 -17:32:30 2.6 15.18 149 PPM 178683 12:05:59.8 -03:07:54 6.4 2.18 160 PPM 195036 11:59:14.6 -03:19:22 7.6 0.56 161 PPM 194985 11:56:35.3 -03:11:08 9.8 0.21 162 1749_Telamon 11:57:16.2 -03:03:47 14.3 162 Positions are for J2000