Occultation event with (3063) Makhaon, event index number 1082
Regions able to see the event: Australia
Geocentric closest approach at 2025/06/21 12:06:33 UTC
J2000 position of star is 10:06:02.7 +01:39:52
Equinox of date position of star is 10:07:21.5 +01:32:23
Star is 117 degrees from the moon. Moon is 21% illuminated.
Stellar brightness G=15.6, apparent brightess of occulting body is G=14.1
Use an exposure time of 1.05 seconds with the standard RECON-QHY system.
SNR of 5.4 per integration for unocculted signal
Expected flux drop is 21% with SNR of 1.1 for the occulted depth (per occulted point)
Apparent velocity is 26.7 km/sec on the sky relative to the star, or, 24.9 arcsec/hr.
Position angle of asteroid motion is 342.0 degrees
The recommended exposure time corresponds to 28.1 km per image.
The 1-sigma error in the time of the event is 1.4 seconds.
The 1-sigma cross-track error in the shadow position is 23.9 km.
The sky-plane scale is 3862.3 km/arcsec.
Diameter estimates:
116.9 km assuming a 5% albedo, aximum of 4.4 sec for a central chord
47.8 km assuming a 30% albedo, maximum of 1.8 sec for a central chord
Cross-track diameter of 116.9 km used for deployment plan.
Star training set for 3063_Makhaon, (2025/06/21 12:07UT) Object RA Dec mag sep mel Regulus 10:09:43.5 +11:50:30 1.3 10.32 114 15Alp Sex 10:09:14.4 -00:29:50 4.4 2.09 118 PPM 156507 10:07:26.8 +02:18:16 8.5 0.77 117 PPM 156515 10:07:42.8 +01:54:15 8.8 0.37 117 PPM 156495 10:06:44.9 +01:51:34 10.5 0.35 117 3063_Makhaon 10:07:21.5 +01:32:23 14.1 117 Positions are for equinox of date
Star training set for 3063_Makhaon, (2025/06/21 12:07UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 10.32 114 15Alp Sex 10:07:56.2 -00:22:19 4.4 2.09 118 PPM 156507 10:06:07.8 +02:25:46 8.5 0.77 117 PPM 156515 10:06:23.9 +02:01:44 8.8 0.37 117 PPM 156495 10:05:26.0 +01:59:02 10.5 0.35 117 3063_Makhaon 10:06:02.7 +01:39:52 14.1 117 Positions are for J2000