RECON observing guide for 5648_Axius_20250707193818

Occultation event with (5648) Axius, event index number 1117
Regions able to see the event: Australia

Geocentric closest approach at 2025/07/07 19:38:18 UTC

J2000 position of star is 03:25:33.6 +07:29:29
Equinox of date position of star is 03:26:55.6 +07:34:47
Star is 155 degrees from the moon. Moon is 91% illuminated.
Stellar brightness G=14.3, apparent brightess of occulting body is G=15.1
Use an exposure time of 0.40 seconds with the standard RECON-QHY system.
SNR of 9.5 per integration for unocculted signal
Expected flux drop is 68% with SNR of 6.5 for the occulted depth (per occulted point)

Apparent velocity is 29.9 km/sec on the sky relative to the star, or, 29.1 arcsec/hr.
The recommended exposure time corresponds to 11.9 km per image.
The 1-sigma error in the time of the event is 1.1 seconds.
The 1-sigma cross-track error in the shadow position is 24.5 km.
The sky-plane scale is 3691.4 km/arcsec.

Diameter estimates:
65.8 km assuming a 5% albedo, aximum of 2.2 sec for a central chord
26.9 km assuming a 30% albedo, maximum of 0.9 sec for a central chord
Cross-track diameter of 65.8 km used for deployment plan.

Star training set for 5648_Axius, (2025/07/07 19:38UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:23.3 +16:33:30  0.8 19.41 170
Menkar         03:03:37.0 +04:11:18  2.5  6.72 148
1Omi Tau       03:26:11.4 +09:07:01  3.6  1.55 156
PPM 146581     03:28:59.8 +07:50:16  7.9  0.57 155
PPM 146547     03:27:16.2 +07:35:07 10.0  0.09 155
5648_Axius     03:26:55.6 +07:34:47 15.1       155
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 5648_Axius, (2025/07/07 19:38UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.4 +16:30:29  0.8 19.41 170
Menkar         03:02:16.8 +04:05:21  2.5  6.72 148
1Omi Tau       03:24:48.7 +09:01:42  3.6  1.55 156
PPM 146581     03:27:37.7 +07:45:01  7.9  0.57 155
PPM 146547     03:25:54.2 +07:29:49 10.0  0.09 155
5648_Axius     03:25:33.6 +07:29:29 15.1       155
Positions are for J2000


Created by recondetail.pro, 2025/02/28 10:39:06 MT