Occultation event with (38050) Bias, event index number 799
Regions able to see the event: Australia
Geocentric closest approach at 2025/03/11 14:27:23 UTC
J2000 position of star is 08:10:14.1 -14:10:08
Equinox of date position of star is 08:11:24.4 -14:14:40
Star is 38 degrees from the moon. Moon is 93% illuminated.
Stellar brightness G=16.8, apparent brightess of occulting body is G=15.0
Use an exposure time of 1.85 seconds with the standard RECON-QHY system.
Expected flux drop is 84% with SNR of 3.0 per integration
Apparent velocity is 12.9 km/sec on the sky relative to the star, or, 14.7 arcsec/hr.
The recommended exposure time corresponds to 23.9 km per image.
The 1-sigma error in the time of the event is 1.7 seconds.
The 1-sigma cross-track error in the shadow position is 33.2 km.
The sky-plane scale is 3160.8 km/arcsec.
Diameter estimates:
63.4 km assuming a 5% albedo, aximum of 4.9 sec for a central chord
25.9 km assuming a 30% albedo, maximum of 2.0 sec for a central chord
Cross-track diameter of 63.4 km used for deployment plan.
Star training set for 38050_Bias, (2025/03/11 14:27UT) Object RA Dec mag sep mel Sirius 06:46:15.5 -16:45:08 -1.5 20.66 55 15Rho Pup 08:08:37.0 -24:22:42 2.8 10.16 47 18 Pup 08:11:49.9 -13:52:29 5.7 0.38 38 PPM 219735 08:11:10.8 -14:41:26 8.4 0.45 39 PPM 219719 08:10:28.5 -14:06:46 8.9 0.26 38 38050_Bias 08:11:24.4 -14:14:40 15.0 38 Positions are for equinox of date
Star training set for 38050_Bias, (2025/03/11 14:27UT) Object RA Dec mag sep mel Sirius 06:45:07.9 -16:43:28 -1.5 20.66 55 15Rho Pup 08:07:32.5 -24:18:14 2.8 10.16 47 18 Pup 08:10:39.4 -13:47:56 5.7 0.38 38 PPM 219735 08:10:00.7 -14:36:54 8.4 0.45 39 PPM 219719 08:09:18.1 -14:02:15 8.9 0.26 38 38050_Bias 08:10:14.1 -14:10:08 15.0 38 Positions are for J2000