Occultation event with (15033) 98VY29, event index number 3837
Regions able to see the event: NZ
Geocentric closest approach at 2026/07/09 06:58:31 UTC
J2000 position of star is 12:33:51.7 -14:27:13
Equinox of date position of star is 12:35:14.6 -14:35:59
Star is 157 degrees from the moon. Moon is 34% illuminated.
Stellar brightness G=16.0, apparent brightess of occulting body is G=16.8
Use an exposure time of 0.55 seconds with the standard RECON-QHY system.
SNR of 3.1 per integration for unocculted signal
Expected flux drop is 68% with SNR of 2.1 for the occulted depth (per occulted point)
Apparent velocity is 14.4 km/sec on the sky relative to the star, or, 12.3 arcsec/hr.
Position angle of asteroid motion is 88.7 degrees
The recommended exposure time corresponds to 7.9 km per image.
The 1-sigma error in the time of the event is 0.8 seconds.
The 1-sigma cross-track error in the shadow position is 38.1 km.
The sky-plane scale is 4235.0 km/arcsec.
Diameter estimates:
43.8 km assuming a 5% albedo, maximum of 3.0 sec for a central chord
17.9 km assuming a 30% albedo, maximum of 1.2 sec for a central chord
Cross-track diameter of 33.3 km used for deployment plan.
Star training set for 15033_98VY29, (2026/07/09 06:59UT) Object RA Dec mag sep mel Spica 13:26:35.6 -11:17:56 1.0 12.94 167 4Gam Crv 12:17:10.4 -17:41:20 2.6 5.33 153 PPM 225991 12:33:58.6 -14:00:20 6.2 0.67 157 PPM 226034 12:35:21.8 -14:47:06 8.9 0.19 157 15033_98VY29 12:35:14.6 -14:35:59 16.8 157 Positions are for equinox of date
Star training set for 15033_98VY29, (2026/07/09 06:59UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 12.94 167 4Gam Crv 12:15:48.1 -17:32:30 2.6 5.33 153 PPM 225991 12:32:35.7 -13:51:34 6.2 0.67 157 PPM 226034 12:33:58.8 -14:38:20 8.9 0.19 157 15033_98VY29 12:33:51.7 -14:27:13 16.8 157 Positions are for J2000