Occultation event with (4754) Panthoos, event index number 3967
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/08/09 09:13:20 UTC
J2000 position of star is 05:32:49.9 +12:15:21
Equinox of date position of star is 05:34:19.4 +12:16:22
Star is 17 degrees from the moon. Moon is 15% illuminated.
Stellar brightness G=14.1, apparent brightess of occulting body is G=15.9
Use an exposure time of 0.30 seconds with the standard RECON-QHY system.
SNR of 9.3 per integration for unocculted signal
Expected flux drop is 84% with SNR of 7.8 for the occulted depth (per occulted point)
Apparent velocity is 30.4 km/sec on the sky relative to the star, or, 25.9 arcsec/hr.
Position angle of asteroid motion is 94.2 degrees
The recommended exposure time corresponds to 9.1 km per image.
The 1-sigma error in the time of the event is 0.1 seconds.
The 1-sigma cross-track error in the shadow position is 37.8 km.
The sky-plane scale is 4216.2 km/arcsec.
Diameter estimates:
57.8 km assuming a 5% albedo, maximum of 1.9 sec for a central chord
23.6 km assuming a 30% albedo, maximum of 0.8 sec for a central chord
Cross-track diameter of 53.0 km used for deployment plan.
Star training set for 4754_Panthoos, (2026/08/09 09:13UT) Object RA Dec mag sep mel Betelgeuse 05:56:36.8 +07:24:35 0.4 7.33 21 Bellatrix 05:26:33.6 +06:22:18 1.6 6.20 23 35 Ori 05:35:25.1 +14:19:19 5.6 2.07 15 PPM 121033 05:32:19.9 +12:22:33 8.4 0.50 17 PPM 121083 05:34:09.9 +12:27:03 8.9 0.18 17 4754_Panthoos 05:34:19.4 +12:16:22 15.9 17 Positions are for equinox of date
Star training set for 4754_Panthoos, (2026/08/09 09:13UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 7.33 21 Bellatrix 05:25:07.8 +06:20:58 1.6 6.20 23 35 Ori 05:33:54.3 +14:18:20 5.6 2.07 15 PPM 121033 05:30:50.3 +12:21:27 8.4 0.50 17 PPM 121083 05:32:40.3 +12:26:02 8.9 0.18 17 4754_Panthoos 05:32:49.9 +12:15:21 15.9 17 Positions are for J2000