Occultation event with (4835) Asaeus, event index number 3113
Regions able to see the event: US,NMexico
Geocentric closest approach at 2026/01/05 13:35:15 UTC
J2000 position of star is 14:27:34.8 +04:37:54
Equinox of date position of star is 14:28:53.1 +04:30:58
Star is 79 degrees from the moon. Moon is 94% illuminated.
Stellar brightness G=14.6, apparent brightess of occulting body is G=15.9
Use an exposure time of 0.30 seconds with the standard RECON-QHY system.
SNR of 6.6 per integration for unocculted signal
Expected flux drop is 78% with SNR of 5.1 for the occulted depth (per occulted point)
Apparent velocity is 24.4 km/sec on the sky relative to the star, or, 24.9 arcsec/hr.
Position angle of asteroid motion is 87.1 degrees
The recommended exposure time corresponds to 7.3 km per image.
The 1-sigma error in the time of the event is 0.4 seconds.
The 1-sigma cross-track error in the shadow position is 35.1 km.
The sky-plane scale is 3525.3 km/arcsec.
Diameter estimates:
45.7 km assuming a 5% albedo, maximum of 1.9 sec for a central chord
18.7 km assuming a 30% albedo, maximum of 0.8 sec for a central chord
Cross-track diameter of 30.2 km used for deployment plan.
Star training set for 4835_Asaeus, (2026/01/05 13:35UT) Object RA Dec mag sep mel Arcturus 14:16:51.0 +19:02:54 0.0 14.83 72 27Bet Lib 15:18:24.6 -09:28:38 2.6 18.66 95 PPM 160711 14:32:03.7 +04:39:28 6.0 0.80 79 PPM 160627 14:27:13.0 +04:44:28 7.8 0.47 78 PPM 160649 14:28:09.0 +04:11:46 10.0 0.37 79 4835_Asaeus 14:28:53.1 +04:30:58 15.9 79 Positions are for equinox of date
Star training set for 4835_Asaeus, (2026/01/05 13:35UT) Object RA Dec mag sep mel Arcturus 14:15:37.7 +19:10:06 0.0 14.83 72 27Bet Lib 15:17:00.3 -09:22:59 2.6 18.66 95 PPM 160711 14:30:45.4 +04:46:20 6.0 0.80 79 PPM 160627 14:25:54.7 +04:51:26 7.8 0.47 78 PPM 160649 14:26:50.6 +04:18:43 10.0 0.37 79 4835_Asaeus 14:27:34.8 +04:37:54 15.9 79 Positions are for J2000