RECON observing guide for 2759_Idomeneus_20260314101445

Occultation event with (2759) Idomeneus, event index number 3424
Regions able to see the event: US,SAmericaN,RECON,NMexico,SMexico

Geocentric closest approach at 2026/03/14 10:14:45 UTC

J2000 position of star is 12:14:06.4 +03:22:15
Equinox of date position of star is 12:15:26.8 +03:13:32
Star is 116 degrees from the moon. Moon is 22% illuminated.
Stellar brightness G=15.7, apparent brightess of occulting body is G=14.4
Use an exposure time of 0.75 seconds with the standard RECON-QHY system.
SNR of 4.3 per integration for unocculted signal
Expected flux drop is 24% with SNR of 1.0 for the occulted depth (per occulted point)

Apparent velocity is 17.5 km/sec on the sky relative to the star, or, 22.4 arcsec/hr.
Position angle of asteroid motion is 131.8 degrees
The recommended exposure time corresponds to 13.1 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 24.6 km.
The sky-plane scale is 2807.3 km/arcsec.

Diameter estimates:
58.9 km assuming a 5% albedo, maximum of 3.4 sec for a central chord
24.0 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 53.7 km used for deployment plan.

Star training set for 2759_Idomeneus, (2026/03/14 10:15UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:34.6 -11:17:50  1.0 22.89  93
Denebola       11:50:23.7 +14:25:32  2.1 12.79 126
10 Vir         12:11:01.9 +01:45:03  5.9  1.84 116
PPM 158610     12:13:50.2 +03:15:31  8.1  0.40 116
PPM 158621     12:14:45.7 +03:31:41 10.9  0.35 116
2759_Idomeneus 12:15:26.8 +03:13:32 14.4       115
Positions are for equinox of date

This table contains the target star visibility for registered US sites that are relevant for this occultation. This list has been filtered to only those sites that can see the field and are within range of the shadow given the uncertainties. The observing time range has been calculated to cover the time of the event at each site with allowances for the event timing uncertainty plus time for obtaining a pre and post event baseline lightcurve. This set of stations has a 0.0 % chance of getting at least one chord. There is a 0.0% chance of 2 or more chords assuming clear weather for all.
Site Name Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time Xtrack
(km)
Prob

This table contains the target star visibility for registered RECON sites that are relevant for this occultation. This list has been filtered to only those sites that can see the field and are within range of the shadow given the uncertainties. The observing time range has been calculated to cover the time of the event at each site with allowances for the event timing uncertainty plus time for obtaining a pre and post event baseline lightcurve. This set of stations has a 66.1 % chance of getting at least one chord. There is a 0.1% chance of 2 or more chords assuming clear weather for all.
Site Name Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time Xtrack
(km)
Prob
Gimple 10:15:49 -43.1 Dark Down 48.4 213.6 Up 10:13:24-10:19:24 200.2 0.000
Burney 10:15:55 -43.0 Dark Down 48.1 212.1 Up 10:13:26-10:19:26 194.8 0.000
Bishop 10:15:30 -43.7 Dark Down 49.5 218.3 Up 10:13:23-10:19:23 189.0 0.000
Quincy 10:15:49 -43.3 Dark Down 48.6 213.6 Up 10:13:33-10:19:33 185.8 0.000
Lee Vining 10:15:34 -43.7 Dark Down 49.4 217.3 Up 10:13:27-10:19:27 185.5 0.000
Yuma 10:14:54 -44.1 Dark Down 50.9 227.2 Up 10:13:33-10:19:33 156.3 0.000
Calipatria 10:14:59 -44.5 Dark Down 51.1 225.7 Up 10:13:03-10:19:03 129.1 0.000
Idyllwild 10:15:06 -44.9 Dark Down 51.4 223.7 Up 10:12:45-10:18:45 96.1 0.001
Swift 10:15:45 -44.8 Dark Down 50.1 213.3 Up 10:13:15-10:19:15 68.8 0.032
Wildwood 10:15:14 -45.9 Dark Down 52.2 220.9 Up 10:12:13-10:18:13 7.7 0.629

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, (2026/03/14 10:15UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 22.89  93
Denebola       11:49:02.7 +14:34:16  2.1 12.79 126
10 Vir         12:09:41.4 +01:53:48  5.9  1.84 116
PPM 158610     12:12:29.8 +03:24:15  8.1  0.40 116
PPM 158621     12:13:25.3 +03:40:25 10.9  0.35 116
2759_Idomeneus 12:14:06.4 +03:22:15 14.4       116
Positions are for J2000


Created by recondetail.pro, 2025/06/19 02:45:39 MT