Occultation event with (15033) 98VY29, event index number 851
Regions able to see the event: SAmericaN
Geocentric closest approach at 2025/03/25 02:10:53 UTC
J2000 position of star is 10:46:48.6 -08:06:31
Equinox of date position of star is 10:48:04.7 -08:14:31
Star is 136 degrees from the moon. Moon is 24% illuminated.
Stellar brightness G=16.5, apparent brightess of occulting body is G=15.7
Use an exposure time of 1.10 seconds with the standard RECON-QHY system.
Expected flux drop is 69% with SNR of 3.0 per integration
Apparent velocity is 16.0 km/sec on the sky relative to the star, or, 18.3 arcsec/hr.
The recommended exposure time corresponds to 17.6 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 28.1 km.
The sky-plane scale is 3138.3 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, (2025/03/25 02:11UT) Object RA Dec mag sep mel Regulus 10:09:42.8 +11:50:35 1.3 22.23 156 Alphard 09:28:49.6 -08:46:09 2.0 19.60 146 PPM 193828 10:50:59.3 -09:59:13 5.5 1.89 134 PPM 193751 10:46:42.8 -08:44:30 8.4 0.60 136 PPM 193786 10:48:46.4 -08:14:05 9.4 0.17 136 15033_98VY29 10:48:04.7 -08:14:31 15.7 136 Positions are for equinox of date
Star training set for 15033_98VY29, (2025/03/25 02:11UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 22.23 156 Alphard 09:27:35.2 -08:39:30 2.0 19.60 146 PPM 193828 10:49:43.5 -09:51:10 5.5 1.89 134 PPM 193751 10:45:26.9 -08:36:30 8.4 0.60 136 PPM 193786 10:47:30.4 -08:06:04 9.4 0.17 136 15033_98VY29 10:46:48.6 -08:06:31 15.7 136 Positions are for J2000