RECON observing guide for 30705_Idaios_20250714165631

Occultation event with (30705) Idaios, event index number 1138
Regions able to see the event: NZ

Geocentric closest approach at 2025/07/14 16:56:31 UTC

J2000 position of star is 01:40:34.0 +06:20:35
Equinox of date position of star is 01:41:54.1 +06:28:17
Star is 46 degrees from the moon. Moon is 84% illuminated.
Stellar brightness G=16.6, apparent brightess of occulting body is G=15.9
Use an exposure time of 1.20 seconds with the standard RECON-QHY system.
SNR of 3.0 per integration for unocculted signal
Expected flux drop is 33% with SNR of 1.0 for the occulted depth (per occulted point)

Apparent velocity is 14.7 km/sec on the sky relative to the star, or, 15.1 arcsec/hr.
The recommended exposure time corresponds to 17.7 km per image.
The 1-sigma error in the time of the event is 2.0 seconds.
The 1-sigma cross-track error in the shadow position is 27.7 km.
The sky-plane scale is 3501.6 km/arcsec.

Diameter estimates:
48.8 km assuming a 5% albedo, aximum of 3.3 sec for a central chord
19.9 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 48.8 km used for deployment plan.

Star training set for 30705_Idaios, (2025/07/14 16:57UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:23.3 +16:33:31  0.8 44.05  90
68Omi Cet      02:20:38.3 -02:51:47  2.0 13.44  53
106Nu Psc      01:42:45.8 +05:36:57  4.4  0.88  46
PPM 144799     01:38:01.4 +06:50:50  8.0  1.03  45
PPM 144855     01:41:24.0 +06:30:53  9.2  0.13  46
30705_Idaios   01:41:54.1 +06:28:17 15.9        46
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 30705_Idaios, (2025/07/14 16:57UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.4 +16:30:29  0.8 44.05  90
68Omi Cet      02:19:20.8 -02:58:46  2.0 13.44  53
106Nu Psc      01:41:25.9 +05:29:15  4.4  0.88  46
PPM 144799     01:36:41.2 +06:43:04  8.0  1.03  45
PPM 144855     01:40:03.9 +06:23:10  9.2  0.13  46
30705_Idaios   01:40:34.0 +06:20:35 15.9        46
Positions are for J2000


Created by recondetail.pro, 2025/02/28 11:04:57 MT