Occultation event with (15033) 98VY29, event index number 844
Regions able to see the event: Australia
Geocentric closest approach at 2025/03/22 13:33:10 UTC
J2000 position of star is 10:47:54.1 -08:15:57
Equinox of date position of star is 10:49:10.1 -08:23:59
Star is 105 degrees from the moon. Moon is 49% illuminated.
Stellar brightness G=13.7, apparent brightess of occulting body is G=15.7
Use an exposure time of 0.20 seconds with the standard RECON-QHY system.
Expected flux drop is 14% with SNR of 9.8 per integration
Apparent velocity is 16.3 km/sec on the sky relative to the star, or, 18.8 arcsec/hr.
The recommended exposure time corresponds to 3.3 km per image.
The 1-sigma error in the time of the event is 2.6 seconds.
The 1-sigma cross-track error in the shadow position is 25.6 km.
The sky-plane scale is 3128.0 km/arcsec.
Diameter estimates:
43.5 km assuming a 5% albedo, aximum of 2.7 sec for a central chord
17.7 km assuming a 30% albedo, maximum of 1.1 sec for a central chord
Cross-track diameter of 43.5 km used for deployment plan.
Star training set for 15033_98VY29, (2025/03/22 13:33UT) Object RA Dec mag sep mel Regulus 10:09:42.8 +11:50:35 1.3 22.49 123 Alphard 09:28:49.6 -08:46:09 2.0 19.86 120 PPM 193828 10:50:59.3 -09:59:13 5.5 1.65 103 PPM 193841 10:51:44.8 -08:35:47 8.2 0.67 104 PPM 193793 10:49:04.5 -08:31:51 9.5 0.13 104 15033_98VY29 10:49:10.1 -08:23:59 15.7 104 Positions are for equinox of date
Star training set for 15033_98VY29, (2025/03/22 13:33UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 22.49 123 Alphard 09:27:35.2 -08:39:30 2.0 19.86 120 PPM 193828 10:49:43.5 -09:51:10 5.5 1.65 103 PPM 193841 10:50:28.8 -08:27:44 8.2 0.67 104 PPM 193793 10:47:48.5 -08:23:50 9.5 0.13 104 15033_98VY29 10:47:54.1 -08:15:57 15.7 105 Positions are for J2000