Occultation event with (14690) 00AR25, event index number 1725
Regions able to see the event: Europe
Geocentric closest approach at 2025/12/27 01:12:41 UTC
J2000 position of star is 12:11:47.0 -00:29:09
Equinox of date position of star is 12:13:06.9 -00:37:49
Star is 173 degrees from the moon. Moon is 42% illuminated.
Stellar brightness G=14.7, apparent brightess of occulting body is G=16.3
Use an exposure time of 0.55 seconds with the standard RECON-QHY system.
SNR of 9.6 per integration for unocculted signal
Expected flux drop is 82% with SNR of 7.9 for the occulted depth (per occulted point)
Apparent velocity is 11.1 km/sec on the sky relative to the star, or, 10.5 arcsec/hr.
Position angle of asteroid motion is 116.6 degrees
The recommended exposure time corresponds to 6.1 km per image.
The 1-sigma error in the time of the event is 2.7 seconds.
The 1-sigma cross-track error in the shadow position is 21.2 km.
The sky-plane scale is 3800.6 km/arcsec.
Diameter estimates:
45.5 km assuming a 5% albedo, aximum of 4.1 sec for a central chord
18.6 km assuming a 30% albedo, maximum of 1.7 sec for a central chord
Cross-track diameter of 43.2 km used for deployment plan.
Star training set for 14690_00AR25, (2025/12/27 01:13UT) Object RA Dec mag sep mel Spica 13:26:34.0 -11:17:46 1.0 21.13 152 Denebola 11:50:23.0 +14:25:36 2.1 16.07 166 13 Vir 12:20:00.3 -00:55:53 5.9 1.75 171 PPM 158596 12:12:45.3 +00:02:57 8.5 0.69 173 PPM 178707 12:12:11.0 -00:35:20 10.0 0.24 173 PPM 178711 12:13:16.0 -00:37:47 10.7 0.04 173 14690_00AR25 12:13:06.9 -00:37:49 16.3 173 Positions are for equinox of date
Star training set for 14690_00AR25, (2025/12/27 01:13UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 21.13 152 Denebola 11:49:02.7 +14:34:16 2.1 16.07 166 13 Vir 12:18:40.4 -00:47:14 5.9 1.75 171 PPM 158596 12:11:25.4 +00:11:37 8.5 0.69 173 PPM 178707 12:10:51.1 -00:26:40 10.0 0.24 173 PPM 178711 12:11:56.1 -00:29:07 10.7 0.04 173 14690_00AR25 12:11:47.0 -00:29:09 16.3 173 Positions are for J2000