RECON observing guide for 4791_Iphidamas_20250612040803

Occultation event with (4791) Iphidamas, event index number 1051
Regions able to see the event: Senegal

Geocentric closest approach at 2025/06/12 04:08:03 UTC

J2000 position of star is 01:18:16.0 +30:48:44
Equinox of date position of star is 01:19:41.1 +30:56:44
Star is 119 degrees from the moon. Moon is 99% illuminated.
Stellar brightness G=15.5, apparent brightess of occulting body is G=15.7
Use an exposure time of 0.45 seconds with the standard RECON-QHY system.
SNR of 4.1 per integration for unocculted signal
Expected flux drop is 55% with SNR of 2.2 for the occulted depth (per occulted point)

Apparent velocity is 31.8 km/sec on the sky relative to the star, or, 28.6 arcsec/hr.
The recommended exposure time corresponds to 14.3 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 26.6 km.
The sky-plane scale is 4000.9 km/arcsec.

Diameter estimates:
59.2 km assuming a 5% albedo, aximum of 1.9 sec for a central chord
24.1 km assuming a 30% albedo, maximum of 0.8 sec for a central chord
Cross-track diameter of 59.2 km used for deployment plan.

Star training set for 4791_Iphidamas, (2025/06/12 04:08UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:23.0 +16:33:30  0.8 47.06 156
6Bet Ari       01:56:03.1 +20:55:53  2.6 12.92 123
83Tau Psc      01:13:04.1 +30:13:27  4.5  1.60 117
PPM 090641     01:18:30.0 +30:07:35  8.0  0.86 118
PPM 066109     01:16:47.7 +30:44:25  9.5  0.65 118
PPM 066119     01:17:25.3 +30:55:57 10.4  0.49 118
4791_Iphidamas 01:19:41.1 +30:56:44 15.7       119
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 4791_Iphidamas, (2025/06/12 04:08UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.4 +16:30:29  0.8 47.06 156
6Bet Ari       01:54:38.6 +20:48:26  2.6 12.92 123
83Tau Psc      01:11:39.8 +30:05:22  4.5  1.60 117
PPM 090641     01:17:05.2 +29:59:34  8.0  0.86 118
PPM 066109     01:15:22.9 +30:36:23  9.5  0.65 118
PPM 066119     01:16:00.4 +30:47:55 10.4  0.49 118
4791_Iphidamas 01:18:16.0 +30:48:44 15.7       119
Positions are for J2000


Created by recondetail.pro, 2025/02/28 09:13:55 MT