RECON observing guide for 15436_Dexius_20250607105105

Occultation event with (15436) Dexius, event index number 1037
Regions able to see the event: Australia

Geocentric closest approach at 2025/06/07 10:51:05 UTC

J2000 position of star is 09:14:18.7 +00:21:46
Equinox of date position of star is 09:15:37.0 +00:15:23
Star is 73 degrees from the moon. Moon is 87% illuminated.
Stellar brightness G=10.9, apparent brightess of occulting body is G=14.9
Use an exposure time of 0.12 seconds with the standard RECON-QHY system.
SNR of 39.6 per integration for unocculted signal
Expected flux drop is 98% with SNR of 38.6 for the occulted depth (per occulted point)

Apparent velocity is 26.1 km/sec on the sky relative to the star, or, 23.6 arcsec/hr.
The recommended exposure time corresponds to 3.1 km per image.
The 1-sigma error in the time of the event is 1.6 seconds.
The 1-sigma cross-track error in the shadow position is 19.7 km.
The sky-plane scale is 3985.4 km/arcsec.

Diameter estimates:
90.4 km assuming a 5% albedo, aximum of 3.5 sec for a central chord
36.9 km assuming a 30% albedo, maximum of 1.4 sec for a central chord
Cross-track diameter of 90.4 km used for deployment plan.

Star training set for 15436_Dexius, (2025/06/07 10:51UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:43.4 +11:50:31  1.3 17.73  64
Alphard        09:28:50.2 -08:46:12  2.0  9.61  67
22The Hya      09:15:41.2 +02:12:20  3.9  1.95  74
PPM 177782     09:15:10.6 -00:17:36  8.3  0.56  73
PPM 155588     09:15:30.6 +00:12:26  9.1  0.06  73
15436_Dexius   09:15:37.0 +00:15:23 14.9        73
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 15436_Dexius, (2025/06/07 10:51UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 17.73  64
Alphard        09:27:35.2 -08:39:30  2.0  9.61  67
22The Hya      09:14:22.1 +02:18:43  3.9  1.95  74
PPM 177782     09:13:52.5 -00:11:14  8.3  0.56  73
PPM 155588     09:14:12.2 +00:18:49  9.1  0.06  73
15436_Dexius   09:14:18.7 +00:21:46 14.9        73
Positions are for J2000


Created by recondetail.pro, 2025/03/15 09:24:19 MT