Occultation event with (4754) Panthoos, event index number 1310
Regions able to see the event: Australia
Geocentric closest approach at 2025/09/24 19:47:14 UTC
J2000 position of star is 03:50:27.3 +06:24:43
Equinox of date position of star is 03:51:49.7 +06:29:18
Star is 153 degrees from the moon. Moon is 8% illuminated.
Stellar brightness G=15.4, apparent brightess of occulting body is G=15.4
Use an exposure time of 1.55 seconds with the standard RECON-QHY system.
SNR of 9.9 per integration for unocculted signal
Expected flux drop is 52% with SNR of 5.1 for the occulted depth (per occulted point)
Apparent velocity is 7.5 km/sec on the sky relative to the star, or, 8.0 arcsec/hr.
Position angle of asteroid motion is 24.8 degrees
The recommended exposure time corresponds to 11.6 km per image.
The 1-sigma error in the time of the event is 4.8 seconds.
The 1-sigma cross-track error in the shadow position is 8.9 km.
The sky-plane scale is 3360.3 km/arcsec.
Diameter estimates:
57.8 km assuming a 5% albedo, aximum of 7.8 sec for a central chord
23.6 km assuming a 30% albedo, maximum of 3.2 sec for a central chord
Cross-track diameter of 53.0 km used for deployment plan.
Star training set for 4754_Panthoos, (2025/09/24 19:47UT) Object RA Dec mag sep mel Aldebaran 04:37:24.0 +16:33:32 0.8 15.02 144 Menkar 03:03:37.7 +04:11:21 2.5 12.22 161 31 Tau 03:53:22.7 +06:36:37 5.7 0.40 152 PPM 146955 03:51:31.5 +06:41:49 8.4 0.22 153 4754_Panthoos 03:51:49.7 +06:29:18 15.4 152 Positions are for equinox of date
Star training set for 4754_Panthoos, (2025/09/24 19:47UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 15.02 144 Menkar 03:02:16.8 +04:05:21 2.5 12.22 161 31 Tau 03:52:00.2 +06:32:05 5.7 0.40 152 PPM 146955 03:50:09.0 +06:37:14 8.4 0.22 153 4754_Panthoos 03:50:27.3 +06:24:43 15.4 153 Positions are for J2000