RECON observing guide for 5638_Deikoon_20250624103225

Occultation event with (5638) Deikoon, event index number 1093
Regions able to see the event: SAmericaN

Geocentric closest approach at 2025/06/24 10:32:25 UTC

J2000 position of star is 01:44:36.4 +03:41:25
Equinox of date position of star is 01:45:55.8 +03:49:03
Star is 55 degrees from the moon. Moon is 2% illuminated.
Stellar brightness G=15.7, apparent brightess of occulting body is G=16.6
Use an exposure time of 0.45 seconds with the standard RECON-QHY system.
SNR of 3.5 per integration for unocculted signal
Expected flux drop is 69% with SNR of 2.4 for the occulted depth (per occulted point)

Apparent velocity is 23.7 km/sec on the sky relative to the star, or, 20.1 arcsec/hr.
The recommended exposure time corresponds to 10.7 km per image.
The 1-sigma error in the time of the event is 2.3 seconds.
The 1-sigma cross-track error in the shadow position is 15.5 km.
The sky-plane scale is 4236.5 km/arcsec.

Diameter estimates:
46.3 km assuming a 5% albedo, aximum of 2.0 sec for a central chord
18.9 km assuming a 30% albedo, maximum of 0.8 sec for a central chord
Cross-track diameter of 46.3 km used for deployment plan.

Star training set for 5638_Deikoon, (2025/06/24 10:32UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:23.1 +16:33:30  0.8 43.95  14
68Omi Cet      02:20:38.1 -02:51:48  2.0 10.95  52
106Nu Psc      01:42:45.6 +05:36:56  4.4  1.96  55
PPM 144956     01:47:03.2 +03:47:40  7.1  0.28  55
PPM 144923     01:45:11.3 +03:43:01  9.2  0.21  55
5638_Deikoon   01:45:55.8 +03:49:03 16.6        55
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 5638_Deikoon, (2025/06/24 10:32UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.4 +16:30:29  0.8 43.95  14
68Omi Cet      02:19:20.8 -02:58:46  2.0 10.95  52
106Nu Psc      01:41:25.9 +05:29:15  4.4  1.96  55
PPM 144956     01:45:43.9 +03:40:03  7.1  0.28  55
PPM 144923     01:43:52.0 +03:35:23  9.2  0.21  55
5638_Deikoon   01:44:36.4 +03:41:25 16.6        55
Positions are for J2000


Created by recondetail.pro, 2025/02/28 10:07:53 MT