RECON observing guide for 11397_98XX93_20250607135224

Occultation event with (11397) 98XX93, event index number 1039
Regions able to see the event: Australia

Geocentric closest approach at 2025/06/07 13:52:24 UTC

J2000 position of star is 10:49:40.1 -15:37:34
Equinox of date position of star is 10:50:55.4 -15:45:40
Star is 48 degrees from the moon. Moon is 87% illuminated.
Stellar brightness G=16.1, apparent brightess of occulting body is G=16.0
Use an exposure time of 0.90 seconds with the standard RECON-QHY system.
SNR of 4.0 per integration for unocculted signal
Expected flux drop is 49% with SNR of 1.9 for the occulted depth (per occulted point)

Apparent velocity is 14.8 km/sec on the sky relative to the star, or, 13.9 arcsec/hr.
The recommended exposure time corresponds to 13.4 km per image.
The 1-sigma error in the time of the event is 3.1 seconds.
The 1-sigma cross-track error in the shadow position is 24.0 km.
The sky-plane scale is 3848.6 km/arcsec.

Diameter estimates:
54.0 km assuming a 5% albedo, aximum of 3.6 sec for a central chord
22.0 km assuming a 30% albedo, maximum of 1.5 sec for a central chord
Cross-track diameter of 54.0 km used for deployment plan.

Star training set for 11397_98XX93, (2025/06/07 13:52UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:43.4 +11:50:31  1.3 29.42  66
4Gam Crv       12:17:07.1 -17:40:59  2.6 20.72  27
Nu Hya         10:50:52.9 -16:19:39  3.1  0.57  48
PPM 223501     10:50:21.9 -15:17:59  8.0  0.48  48
PPM 223499     10:50:15.3 -15:41:39  9.6  0.17  48
11397_98XX93   10:50:55.4 -15:45:40 16.0        47
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 11397_98XX93, (2025/06/07 13:52UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 29.42  66
4Gam Crv       12:15:48.1 -17:32:30  2.6 20.72  27
Nu Hya         10:49:37.7 -16:11:32  3.1  0.57  48
PPM 223501     10:49:06.5 -15:09:53  8.0  0.48  48
PPM 223499     10:49:00.0 -15:33:34  9.6  0.17  48
11397_98XX93   10:49:40.1 -15:37:34 16.0        48
Positions are for J2000


Created by recondetail.pro, 2025/03/15 09:25:17 MT