Occultation event with (4754) Panthoos, event index number 4436
Regions able to see the event: SAfrica
Geocentric closest approach at 2026/10/19 01:13:00 UTC
J2000 position of star is 06:00:18.3 +10:18:25
Equinox of date position of star is 06:01:47.2 +10:18:22
Star is 147 degrees from the moon. Moon is 54% illuminated.
Stellar brightness G=16.5, apparent brightess of occulting body is G=15.6
Use an exposure time of 2.00 seconds with the standard RECON-QHY system.
SNR of 4.3 per integration for unocculted signal
Expected flux drop is 29% with SNR of 1.2 for the occulted depth (per occulted point)
Apparent velocity is 4.9 km/sec on the sky relative to the star, or, 5.1 arcsec/hr.
Position angle of asteroid motion is 6.0 degrees
The recommended exposure time corresponds to 9.8 km per image.
The 1-sigma error in the time of the event is 7.8 seconds.
The 1-sigma cross-track error in the shadow position is 0.8 km.
The sky-plane scale is 3477.6 km/arcsec.
Diameter estimates:
57.8 km assuming a 5% albedo, maximum of 11.8 sec for a central chord
23.6 km assuming a 30% albedo, maximum of 4.8 sec for a central chord
Cross-track diameter of 53.0 km used for deployment plan.
Star training set for 4754_Panthoos, (2026/10/19 01:13UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.4 +07:24:35 0.4 3.16 144 Bellatrix 05:26:34.2 +06:22:18 1.6 9.56 137 PPM 121631 05:58:19.3 +11:31:20 5.9 1.48 146 PPM 149749 06:01:48.2 +09:42:04 8.3 0.61 146 PPM 121740 06:01:57.2 +10:13:02 9.0 0.10 147 4754_Panthoos 06:01:47.2 +10:18:22 15.6 147 Positions are for equinox of date
Star training set for 4754_Panthoos, (2026/10/19 01:13UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 3.16 144 Bellatrix 05:25:07.8 +06:20:58 1.6 9.56 137 PPM 121631 05:56:49.6 +11:31:14 5.9 1.48 146 PPM 149749 06:00:19.7 +09:42:06 8.3 0.61 146 PPM 121740 06:00:28.3 +10:13:05 9.0 0.10 147 4754_Panthoos 06:00:18.3 +10:18:25 15.6 147 Positions are for J2000