Occultation event with (19020) 00SC6, event index number 1242
Regions able to see the event: SAmericaS
Geocentric closest approach at 2025/08/19 06:39:12 UTC
J2000 position of star is 03:40:12.4 +05:20:30
Equinox of date position of star is 03:41:33.8 +05:25:23
Star is 46 degrees from the moon. Moon is 18% illuminated.
Stellar brightness G=15.8, apparent brightess of occulting body is G=16.0
Use an exposure time of 0.90 seconds with the standard RECON-QHY system.
SNR of 5.1 per integration for unocculted signal
Expected flux drop is 55% with SNR of 2.8 for the occulted depth (per occulted point)
Apparent velocity is 11.6 km/sec on the sky relative to the star, or, 11.7 arcsec/hr.
Position angle of asteroid motion is 96.1 degrees
The recommended exposure time corresponds to 10.5 km per image.
The 1-sigma error in the time of the event is 1.3 seconds.
The 1-sigma cross-track error in the shadow position is 38.7 km.
The sky-plane scale is 3572.5 km/arcsec.
Diameter estimates:
47.0 km assuming a 5% albedo, maximum of 4.0 sec for a central chord
19.2 km assuming a 30% albedo, maximum of 1.6 sec for a central chord
Cross-track diameter of 42.6 km used for deployment plan.
Star training set for 19020_00SC6, (2025/08/19 06:39UT) Object RA Dec mag sep mel Aldebaran 04:37:23.7 +16:33:31 0.8 17.64 29 Menkar 03:03:37.4 +04:11:19 2.5 9.53 55 29 Tau 03:47:02.3 +06:07:43 5.3 1.53 45 PPM 146748 03:39:14.0 +05:43:27 8.2 0.65 47 PPM 146799 03:41:41.8 +05:00:03 9.4 0.42 47 PPM 146800 03:41:45.7 +05:19:24 10.2 0.11 46 19020_00SC6 03:41:33.8 +05:25:23 16.0 46 Positions are for equinox of date
Star training set for 19020_00SC6, (2025/08/19 06:39UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 17.64 29 Menkar 03:02:16.8 +04:05:21 2.5 9.53 55 29 Tau 03:45:40.5 +06:03:00 5.3 1.53 45 PPM 146748 03:37:52.4 +05:38:29 8.2 0.65 47 PPM 146799 03:40:20.5 +04:55:10 9.4 0.42 47 PPM 146800 03:40:24.3 +05:14:32 10.2 0.11 46 19020_00SC6 03:40:12.4 +05:20:30 16.0 46 Positions are for J2000