RECON observing guide for 2456_Palamedes_20250524024652

Occultation event with (2456) Palamedes, event index number 996
Regions able to see the event: US

Geocentric closest approach at 2025/05/24 02:46:52 UTC

J2000 position of star is 09:56:10.8 +09:28:06
Equinox of date position of star is 09:57:31.8 +09:20:49
Star is 127 degrees from the moon. Moon is 13% illuminated.
Stellar brightness G=14.8, apparent brightess of occulting body is G=14.9
Use an exposure time of 0.80 seconds with the standard RECON-QHY system.
SNR of 9.9 per integration for unocculted signal
Expected flux drop is 52% with SNR of 5.1 for the occulted depth (per occulted point)

Apparent velocity is 14.9 km/sec on the sky relative to the star, or, 14.5 arcsec/hr.
The recommended exposure time corresponds to 12.0 km per image.
The 1-sigma error in the time of the event is 2.5 seconds.
The 1-sigma cross-track error in the shadow position is 27.1 km.
The sky-plane scale is 3722.0 km/arcsec.

Diameter estimates:
84.3 km assuming a 5% albedo, aximum of 5.6 sec for a central chord
34.4 km assuming a 30% albedo, maximum of 2.3 sec for a central chord
Cross-track diameter of 84.3 km used for deployment plan.

Star training set for 2456_Palamedes, (2025/05/24 02:47UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:43.3 +11:50:32  1.3  3.90 129
PPM 156338     09:57:46.6 +08:48:42  5.8  0.54 127
PPM 126943     09:57:43.6 +10:32:37  8.0  1.20 127
PPM 156369     09:59:08.7 +09:14:26  9.6  0.41 128
PPM 156344     09:58:07.7 +09:17:48 11.0  0.16 127
2456_Palamedes 09:57:31.8 +09:20:49 14.9       128
Positions are for equinox of date

This table contains the target star visibility for registered US sites that are relevant for this occultation. This list has been filtered to only those sites that can see the field and are within range of the shadow given the uncertainties. The observing time range has been calculated to cover the time of the event at each site with allowances for the event timing uncertainty plus time for obtaining a pre and post event baseline lightcurve. This set of stations has a 33.9 % chance of getting at least one chord. There is a 13.2% chance of 2 or more chords assuming clear weather for all.
Site Name Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time Xtrack
(km)
Prob
Hodapp 02:48:48 -16.1 AT Down 47.0 245.7 Up 02:46:17-02:52:17 -47.2 0.338
Cobble 02:48:46 -15.7 AT Down 47.3 245.3 Up 02:45:48-02:51:48 -65.9 0.133

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 2456_Palamedes, (2025/05/24 02:47UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3  3.90 129
PPM 156338     09:56:25.8 +08:56:00  5.8  0.54 127
PPM 126943     09:56:22.3 +10:39:55  8.0  1.20 127
PPM 156369     09:57:47.8 +09:21:45  9.6  0.41 128
PPM 156344     09:56:46.8 +09:25:05 11.0  0.16 127
2456_Palamedes 09:56:10.8 +09:28:06 14.9       127
Positions are for J2000


Created by recondetail.pro, 2025/03/15 08:47:36 MT