Occultation event with (15033) 98VY29, event index number 901
Regions able to see the event: SAmericaN
Geocentric closest approach at 2025/04/14 00:11:35 UTC
J2000 position of star is 10:40:08.9 -06:52:02
Equinox of date position of star is 10:41:25.3 -06:59:59
Star is 51 degrees from the moon. Moon is 99% illuminated.
Stellar brightness G=14.9, apparent brightess of occulting body is G=15.9
Use an exposure time of 0.75 seconds with the standard RECON-QHY system.
SNR of 9.9 per integration for unocculted signal
Expected flux drop is 73% with SNR of 7.2 for the occulted depth (per occulted point)
Apparent velocity is 11.3 km/sec on the sky relative to the star, or, 12.4 arcsec/hr.
The recommended exposure time corresponds to 8.4 km per image.
The 1-sigma error in the time of the event is 3.0 seconds.
The 1-sigma cross-track error in the shadow position is 35.9 km.
The sky-plane scale is 3262.9 km/arcsec.
Diameter estimates:
43.7 km assuming a 5% albedo, aximum of 3.9 sec for a central chord
17.8 km assuming a 30% albedo, maximum of 1.6 sec for a central chord
Cross-track diameter of 43.7 km used for deployment plan.
Star training set for 15033_98VY29, (2025/04/14 00:12UT) Object RA Dec mag sep mel Regulus 10:09:42.9 +11:50:34 1.3 20.42 65 Alphard 09:28:49.8 -08:46:10 2.0 18.06 68 PPM 193503 10:32:14.7 -07:46:04 6.2 2.40 53 PPM 193670 10:41:32.0 -06:49:23 8.0 0.18 51 15033_98VY29 10:41:25.3 -06:59:59 15.9 51 Positions are for equinox of date
Star training set for 15033_98VY29, (2025/04/14 00:12UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 20.42 65 Alphard 09:27:35.2 -08:39:30 2.0 18.06 68 PPM 193503 10:30:58.7 -07:38:15 6.2 2.40 53 PPM 193670 10:40:15.6 -06:41:26 8.0 0.18 51 15033_98VY29 10:40:08.9 -06:52:02 15.9 51 Positions are for J2000