RECON observing guide for 5130_Ilioneus_20250524092144

Occultation event with (5130) Ilioneus, event index number 997
Regions able to see the event: SAmericaN

Geocentric closest approach at 2025/05/24 09:21:44 UTC

J2000 position of star is 00:17:25.2 +15:37:54
Equinox of date position of star is 00:18:44.0 +15:46:22
Star is 18 degrees from the moon. Moon is 11% illuminated.
Stellar brightness G=16.2, apparent brightess of occulting body is G=15.6
Use an exposure time of 0.70 seconds with the standard RECON-QHY system.
SNR of 3.1 per integration for unocculted signal
Expected flux drop is 37% with SNR of 1.1 for the occulted depth (per occulted point)

Apparent velocity is 31.0 km/sec on the sky relative to the star, or, 27.2 arcsec/hr.
The recommended exposure time corresponds to 21.7 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 21.9 km.
The sky-plane scale is 4106.0 km/arcsec.

Diameter estimates:
65.8 km assuming a 5% albedo, aximum of 2.1 sec for a central chord
26.9 km assuming a 30% albedo, maximum of 0.9 sec for a central chord
Cross-track diameter of 65.8 km used for deployment plan.

Star training set for 5130_Ilioneus, (2025/05/24 09:22UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:17.9 +45:22:20  1.3 53.86  69
Algenib        00:14:32.8 +15:19:28  2.8  1.10  19
42 Psc         00:23:44.5 +13:37:24  6.2  2.47  16
PPM 116284     00:17:53.7 +15:58:42  8.4  0.29  18
PPM 116317     00:19:26.0 +15:48:27  9.2  0.17  17
5130_Ilioneus  00:18:44.0 +15:46:22 15.6        17
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 5130_Ilioneus, (2025/05/24 09:22UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 53.86  69
Algenib        00:13:14.2 +15:11:00  2.8  1.10  19
42 Psc         00:22:25.6 +13:28:57  6.2  2.47  16
PPM 116284     00:16:34.8 +15:50:14  8.4  0.29  18
PPM 116317     00:18:07.1 +15:39:59  9.2  0.17  17
5130_Ilioneus  00:17:25.2 +15:37:54 15.6        18
Positions are for J2000


Created by recondetail.pro, 2025/02/27 17:13:16 MT