RECON observing guide for 3391_Sinon_20250706095222

Occultation event with (3391) Sinon, event index number 1113
Regions able to see the event: Australia

Geocentric closest approach at 2025/07/06 09:52:22 UTC

J2000 position of star is 09:41:00.3 +16:47:49
Equinox of date position of star is 09:42:24.6 +16:40:48
Star is 92 degrees from the moon. Moon is 82% illuminated.
Stellar brightness G=14.0, apparent brightess of occulting body is G=16.0
Use an exposure time of 0.30 seconds with the standard RECON-QHY system.
SNR of 10.0 per integration for unocculted signal
Expected flux drop is 86% with SNR of 8.6 for the occulted depth (per occulted point)

Apparent velocity is 36.5 km/sec on the sky relative to the star, or, 31.1 arcsec/hr.
The recommended exposure time corresponds to 11.0 km per image.
The 1-sigma error in the time of the event is 1.3 seconds.
The 1-sigma cross-track error in the shadow position is 35.6 km.
The sky-plane scale is 4226.1 km/arcsec.

Diameter estimates:
51.0 km assuming a 5% albedo, aximum of 1.4 sec for a central chord
20.8 km assuming a 30% albedo, maximum of 0.6 sec for a central chord
Cross-track diameter of 51.0 km used for deployment plan.

Star training set for 3391_Sinon, (2025/07/06 09:52UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:43.7 +11:50:30  1.3  8.20  84
16Psi Leo      09:45:07.1 +13:54:14  5.3  2.85  90
PPM 126714     09:43:43.1 +16:57:53  7.9  0.42  92
PPM 126684     09:41:49.0 +16:51:05  9.1  0.22  92
3391_Sinon     09:42:24.6 +16:40:48 16.0        92
Positions are for equinox of date

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Star training set for 3391_Sinon, (2025/07/06 09:52UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3  8.20  84
16Psi Leo      09:43:43.9 +14:01:18  5.3  2.85  90
PPM 126714     09:42:18.8 +17:04:55  7.9  0.42  92
PPM 126684     09:40:24.7 +16:58:05  9.1  0.22  92
3391_Sinon     09:41:00.3 +16:47:49 16.0        92
Positions are for J2000


Created by recondetail.pro, 2025/03/15 10:17:53 MT