RECON observing guide for 7152_Euneus_20250715230920

Occultation event with (7152) Euneus, event index number 1143
Regions able to see the event: SAmericaN,SAmericaS

Geocentric closest approach at 2025/07/15 23:09:20 UTC

J2000 position of star is 10:21:51.3 +12:44:30
Equinox of date position of star is 10:23:12.9 +12:36:44
Star is 156 degrees from the moon. Moon is 73% illuminated.
Stellar brightness G=14.8, apparent brightess of occulting body is G=16.1
Use an exposure time of 0.35 seconds with the standard RECON-QHY system.
SNR of 6.0 per integration for unocculted signal
Expected flux drop is 77% with SNR of 4.6 for the occulted depth (per occulted point)

Apparent velocity is 35.7 km/sec on the sky relative to the star, or, 29.9 arcsec/hr.
The recommended exposure time corresponds to 12.5 km per image.
The 1-sigma error in the time of the event is 1.4 seconds.
The 1-sigma cross-track error in the shadow position is 25.6 km.
The sky-plane scale is 4301.8 km/arcsec.

Diameter estimates:
51.5 km assuming a 5% albedo, aximum of 1.4 sec for a central chord
21.0 km assuming a 30% albedo, maximum of 0.6 sec for a central chord
Cross-track diameter of 51.5 km used for deployment plan.

Star training set for 7152_Euneus, (2025/07/15 23:09UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:43.8 +11:50:29  1.3  3.38 153
37 Leo         10:18:02.8 +13:36:00  5.4  1.60 154
PPM 127380     10:26:20.1 +12:35:59  8.2  0.76 156
PPM 127340     10:23:24.8 +12:17:54  9.3  0.32 156
7152_Euneus    10:23:12.9 +12:36:44 16.1       156
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 7152_Euneus, (2025/07/15 23:09UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3  3.38 153
37 Leo         10:16:40.7 +13:43:41  5.4  1.60 154
PPM 127380     10:24:58.5 +12:43:48  8.2  0.76 156
PPM 127340     10:22:03.2 +12:25:41  9.3  0.32 156
7152_Euneus    10:21:51.3 +12:44:30 16.1       156
Positions are for J2000


Created by recondetail.pro, 2025/03/15 10:28:22 MT