RECON observing guide for 4836_Medon_20250509174232

Occultation event with (4836) Medon, event index number 961
Regions able to see the event: SAfrica

Geocentric closest approach at 2025/05/09 17:42:32 UTC

J2000 position of star is 11:00:02.0 +29:08:45
Equinox of date position of star is 11:01:24.8 +29:00:34
Star is 47 degrees from the moon. Moon is 92% illuminated.
Stellar brightness G=16.4, apparent brightess of occulting body is G=14.8
Use an exposure time of 1.75 seconds with the standard RECON-QHY system.
SNR of 4.0 per integration for unocculted signal
Expected flux drop is 18% with SNR of 0.7 for the occulted depth (per occulted point)

Apparent velocity is 10.3 km/sec on the sky relative to the star, or, 11.4 arcsec/hr.
The recommended exposure time corresponds to 18.0 km per image.
The 1-sigma error in the time of the event is 1.9 seconds.
The 1-sigma cross-track error in the shadow position is 58.5 km.
The sky-plane scale is 3241.0 km/arcsec.

Diameter estimates:
73.4 km assuming a 5% albedo, aximum of 7.1 sec for a central chord
30.0 km assuming a 30% albedo, maximum of 2.9 sec for a central chord
Cross-track diameter of 73.4 km used for deployment plan.

Star training set for 4836_Medon, (2025/05/09 17:43UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:43.2 +11:50:32  1.3 20.97  47
68Del Leo      11:15:27.2 +20:23:04  2.6  9.19  39
44 LMi         10:51:17.0 +27:50:22  6.0  2.52  48
PPM 100830     11:03:11.9 +29:44:04  8.2  0.82  48
PPM 100817     11:02:11.4 +29:04:55  8.6  0.18  47
4836_Medon     11:01:24.8 +29:00:34 14.8        47
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 4836_Medon, (2025/05/09 17:43UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 20.97  47
68Del Leo      11:14:06.7 +20:31:22  2.6  9.19  39
44 LMi         10:49:53.7 +27:58:27  6.0  2.52  48
PPM 100830     11:01:49.1 +29:52:16  8.2  0.82  48
PPM 100817     11:00:48.7 +29:13:07  8.6  0.18  47
4836_Medon     11:00:02.0 +29:08:45 14.8        47
Positions are for J2000


Created by recondetail.pro, 2025/03/14 11:09:50 MT