RECON observing guide for 4867_Polites_20250630044846

Occultation event with (4867) Polites, event index number 1105
Regions able to see the event: SAfrica

Geocentric closest approach at 2025/06/30 04:48:46 UTC

J2000 position of star is 02:18:09.4 +36:54:04
Equinox of date position of star is 02:19:42.4 +37:01:04
Star is 112 degrees from the moon. Moon is 25% illuminated.
Stellar brightness G=12.7, apparent brightess of occulting body is G=15.7
Use an exposure time of 0.12 seconds with the standard RECON-QHY system.
SNR of 13.6 per integration for unocculted signal
Expected flux drop is 94% with SNR of 12.8 for the occulted depth (per occulted point)

Apparent velocity is 31.9 km/sec on the sky relative to the star, or, 27.6 arcsec/hr.
The recommended exposure time corresponds to 3.8 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 32.3 km.
The sky-plane scale is 4162.0 km/arcsec.

Diameter estimates:
62.5 km assuming a 5% albedo, aximum of 2.0 sec for a central chord
25.5 km assuming a 30% albedo, maximum of 0.8 sec for a central chord
Cross-track diameter of 62.5 km used for deployment plan.

Star training set for 4867_Polites, (2025/06/30 04:49UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:23.2 +16:33:30  0.8 36.59  89
57Gam1And      02:05:28.6 +42:27:03  2.3  6.08 111
58 And         02:10:02.2 +37:58:43  4.8  2.15 113
PPM 067132     02:17:27.0 +36:53:16  7.8  0.47 112
PPM 067194     02:20:09.1 +37:11:01  9.2  0.19 112
PPM 067176     02:19:05.1 +37:04:18 10.8  0.14 112
4867_Polites   02:19:42.4 +37:01:04 15.7       112
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 4867_Polites, (2025/06/30 04:49UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.4 +16:30:29  0.8 36.59  89
57Gam1And      02:03:54.1 +42:19:46  2.3  6.08 111
58 And         02:08:29.6 +37:51:32  4.8  2.15 113
PPM 067132     02:15:54.3 +36:46:13  7.8  0.47 112
PPM 067194     02:18:36.0 +37:04:02  9.2  0.19 112
PPM 067176     02:17:32.1 +36:57:17 10.8  0.14 112
4867_Polites   02:18:09.4 +36:54:04 15.7       112
Positions are for J2000


Created by recondetail.pro, 2025/02/28 10:21:38 MT