Occultation event with (4754) Panthoos, event index number 1629
Regions able to see the event: Australia
Geocentric closest approach at 2025/12/02 10:43:46 UTC
J2000 position of star is 03:23:51.6 +03:29:09
Equinox of date position of star is 03:25:13.0 +03:34:35
Star is 24 degrees from the moon. Moon is 90% illuminated.
Stellar brightness G=13.5, apparent brightess of occulting body is G=15.1
Use an exposure time of 0.18 seconds with the standard RECON-QHY system.
SNR of 10.0 per integration for unocculted signal
Expected flux drop is 81% with SNR of 8.1 for the occulted depth (per occulted point)
Apparent velocity is 15.3 km/sec on the sky relative to the star, or, 17.5 arcsec/hr.
Position angle of asteroid motion is 82.4 degrees
The recommended exposure time corresponds to 2.8 km per image.
The 1-sigma error in the time of the event is 0.8 seconds.
The 1-sigma cross-track error in the shadow position is 34.4 km.
The sky-plane scale is 3157.1 km/arcsec.
Diameter estimates:
57.8 km assuming a 5% albedo, aximum of 3.8 sec for a central chord
23.6 km assuming a 30% albedo, maximum of 1.5 sec for a central chord
Cross-track diameter of 53.0 km used for deployment plan.
Star training set for 4754_Panthoos, (2025/12/02 10:44UT) Object RA Dec mag sep mel Aldebaran 04:37:24.7 +16:33:33 0.8 21.97 36 Menkar 03:03:38.3 +04:11:23 2.5 5.42 19 97Kap2Cet 03:22:28.3 +03:46:02 6.2 0.71 23 PPM 146523 03:25:16.0 +03:08:02 8.1 0.44 24 PPM 146529 03:25:48.5 +03:57:15 9.3 0.41 24 PPM 146505 03:23:44.6 +03:32:18 10.2 0.37 23 4754_Panthoos 03:25:13.0 +03:34:35 15.1 24 Positions are for equinox of date
Star training set for 4754_Panthoos, (2025/12/02 10:44UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 21.97 36 Menkar 03:02:16.8 +04:05:21 2.5 5.42 19 97Kap2Cet 03:21:06.9 +03:40:31 6.2 0.71 23 PPM 146523 03:23:54.9 +03:02:36 8.1 0.44 24 PPM 146529 03:24:26.9 +03:51:51 9.3 0.41 24 PPM 146505 03:22:23.3 +03:26:50 10.2 0.37 23 4754_Panthoos 03:23:51.6 +03:29:09 15.1 24 Positions are for J2000