RECON observing guide for 2759_Idomeneus_20250512223240

Occultation event with (2759) Idomeneus, event index number 968
Regions able to see the event: SAmericaN

Geocentric closest approach at 2025/05/12 22:32:40 UTC

J2000 position of star is 09:24:59.5 +07:34:25
Equinox of date position of star is 09:26:20.3 +07:27:48
Star is 93 degrees from the moon. Moon is 100% illuminated.
Stellar brightness G=16.8, apparent brightess of occulting body is G=15.4
Use an exposure time of 1.60 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 23% with SNR of 0.7 for the occulted depth (per occulted point)

Apparent velocity is 15.2 km/sec on the sky relative to the star, or, 15.8 arcsec/hr.
The recommended exposure time corresponds to 24.4 km per image.
The 1-sigma error in the time of the event is 3.8 seconds.
The 1-sigma cross-track error in the shadow position is 11.1 km.
The sky-plane scale is 3479.5 km/arcsec.

Diameter estimates:
58.6 km assuming a 5% albedo, aximum of 3.8 sec for a central chord
23.9 km assuming a 30% albedo, maximum of 1.6 sec for a central chord
Cross-track diameter of 58.6 km used for deployment plan.

Star training set for 2759_Idomeneus, (2025/05/12 22:33UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:43.2 +11:50:32  1.3 11.55  85
2Ome Leo       09:29:48.8 +08:56:42  6.0  1.71  93
PPM 155862     09:29:04.1 +07:15:22  8.3  0.71  93
PPM 155840     09:27:55.2 +07:34:01  8.7  0.41  93
PPM 155812     09:26:19.1 +07:20:27 10.6  0.12  93
2759_Idomeneus 09:26:20.3 +07:27:48 15.4        93
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 2759_Idomeneus, (2025/05/12 22:33UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 11.55  85
2Ome Leo       09:28:27.5 +09:03:24  6.0  1.71  93
PPM 155862     09:27:43.4 +07:22:03  8.3  0.71  93
PPM 155840     09:26:34.4 +07:40:41  8.7  0.41  93
PPM 155812     09:24:58.4 +07:27:05 10.6  0.12  93
2759_Idomeneus 09:24:59.5 +07:34:25 15.4        93
Positions are for J2000


Created by recondetail.pro, 2025/03/09 08:48:01 MT