RECON observing guide for 12929_Periboea_20250722194450

Occultation event with (12929) Periboea, event index number 1160
Regions able to see the event: Australia

Geocentric closest approach at 2025/07/22 19:44:50 UTC

J2000 position of star is 03:40:22.6 +00:48:37
Equinox of date position of star is 03:41:41.6 +00:53:29
Star is 47 degrees from the moon. Moon is 5% illuminated.
Stellar brightness G=15.4, apparent brightess of occulting body is G=15.8
Use an exposure time of 0.50 seconds with the standard RECON-QHY system.
SNR of 4.8 per integration for unocculted signal
Expected flux drop is 59% with SNR of 2.9 for the occulted depth (per occulted point)

Apparent velocity is 27.1 km/sec on the sky relative to the star, or, 24.5 arcsec/hr.
The recommended exposure time corresponds to 13.6 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 19.0 km.
The sky-plane scale is 3979.7 km/arcsec.

Diameter estimates:
58.6 km assuming a 5% albedo, aximum of 2.2 sec for a central chord
23.9 km assuming a 30% albedo, maximum of 0.9 sec for a central chord
Cross-track diameter of 58.6 km used for deployment plan.

Star training set for 12929_Periboea, (2025/07/22 19:45UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:23.4 +16:33:31  0.8 20.82  27
Menkar         03:03:37.1 +04:11:18  2.5 10.06  53
10 Tau         03:38:10.8 +00:28:52  4.3  0.97  48
PPM 146746     03:39:09.1 +00:13:24  7.6  0.92  48
PPM 146766     03:40:17.8 +00:52:41  9.1  0.35  47
12929_Periboea 03:41:41.6 +00:53:29 15.8        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 12929_Periboea, (2025/07/22 19:45UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.4 +16:30:29  0.8 20.82  27
Menkar         03:02:16.8 +04:05:21  2.5 10.06  53
10 Tau         03:36:52.0 +00:23:54  4.3  0.97  48
PPM 146746     03:37:50.4 +00:08:27  7.6  0.92  48
PPM 146766     03:38:58.8 +00:47:46  9.1  0.35  47
12929_Periboea 03:40:22.6 +00:48:37 15.8        47
Positions are for J2000


Created by recondetail.pro, 2025/03/01 08:41:02 MT