RECON observing guide for 3240_Laocoon_20250616032910

Occultation event with (3240) Laocoon, event index number 1065
Regions able to see the event: SAfrica

Geocentric closest approach at 2025/06/16 03:29:10 UTC

J2000 position of star is 02:15:10.9 +15:45:28
Equinox of date position of star is 02:16:34.6 +15:52:31
Star is 75 degrees from the moon. Moon is 78% illuminated.
Stellar brightness G=14.6, apparent brightess of occulting body is G=15.9
Use an exposure time of 0.35 seconds with the standard RECON-QHY system.
SNR of 7.4 per integration for unocculted signal
Expected flux drop is 78% with SNR of 5.8 for the occulted depth (per occulted point)

Apparent velocity is 32.9 km/sec on the sky relative to the star, or, 29.2 arcsec/hr.
The recommended exposure time corresponds to 11.5 km per image.
The 1-sigma error in the time of the event is 1.2 seconds.
The 1-sigma cross-track error in the shadow position is 19.1 km.
The sky-plane scale is 4058.2 km/arcsec.

Diameter estimates:
52.5 km assuming a 5% albedo, aximum of 1.6 sec for a central chord
21.4 km assuming a 30% albedo, maximum of 0.7 sec for a central chord
Cross-track diameter of 52.5 km used for deployment plan.

Star training set for 3240_Laocoon, (2025/06/16 03:29UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:23.1 +16:33:30  0.8 33.77 108
6Bet Ari       01:56:03.1 +20:55:53  2.6  7.02  73
19 Ari         02:14:26.9 +15:23:53  5.7  0.70  74
PPM 118084     02:17:19.5 +15:56:09  8.3  0.19  75
PPM 118070     02:16:42.1 +15:51:00 11.8  0.04  75
3240_Laocoon   02:16:34.6 +15:52:31 15.9        75
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 3240_Laocoon, (2025/06/16 03:29UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.4 +16:30:29  0.8 33.77 108
6Bet Ari       01:54:38.6 +20:48:26  2.6  7.02  73
19 Ari         02:13:03.5 +15:16:47  5.7  0.70  74
PPM 118084     02:15:55.8 +15:49:07  8.3  0.19  75
PPM 118070     02:15:18.4 +15:43:57 11.8  0.04  75
3240_Laocoon   02:15:10.9 +15:45:28 15.9        75
Positions are for J2000


Created by recondetail.pro, 2025/02/28 09:30:25 MT