Occultation event with (4754) Panthoos, event index number 4206
Regions able to see the event: SAmericaN
Geocentric closest approach at 2026/09/09 08:26:39 UTC
J2000 position of star is 05:51:06.0 +11:36:10
Equinox of date position of star is 05:52:35.4 +11:36:29
Star is 57 degrees from the moon. Moon is 4% illuminated.
Stellar brightness G=16.5, apparent brightess of occulting body is G=15.8
Use an exposure time of 1.00 seconds with the standard RECON-QHY system.
SNR of 3.1 per integration for unocculted signal
Expected flux drop is 36% with SNR of 1.1 for the occulted depth (per occulted point)
Apparent velocity is 18.7 km/sec on the sky relative to the star, or, 17.3 arcsec/hr.
Position angle of asteroid motion is 104.2 degrees
The recommended exposure time corresponds to 18.7 km per image.
The 1-sigma error in the time of the event is 0.3 seconds.
The 1-sigma cross-track error in the shadow position is 38.4 km.
The sky-plane scale is 3906.5 km/arcsec.
Diameter estimates:
57.8 km assuming a 5% albedo, maximum of 3.1 sec for a central chord
23.6 km assuming a 30% albedo, maximum of 1.3 sec for a central chord
Cross-track diameter of 53.0 km used for deployment plan.
Star training set for 4754_Panthoos, (2026/09/09 08:27UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.1 +07:24:35 0.4 4.31 56 Bellatrix 05:26:33.8 +06:22:18 1.6 8.29 64 134 Tau 05:51:02.9 +12:39:27 4.8 1.11 57 PPM 121479 05:52:32.6 +11:30:15 7.9 0.10 57 4754_Panthoos 05:52:35.4 +11:36:29 15.8 56 Positions are for equinox of date
Star training set for 4754_Panthoos, (2026/09/09 08:27UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 4.31 56 Bellatrix 05:25:07.8 +06:20:58 1.6 8.29 64 134 Tau 05:49:32.8 +12:39:04 4.8 1.11 57 PPM 121479 05:51:03.3 +11:29:56 7.9 0.10 57 4754_Panthoos 05:51:06.0 +11:36:10 15.8 57 Positions are for J2000