Occultation event with (32475) 00SD234, event index number 4313
Regions able to see the event: US,RECON,NMexico,SMexico
Geocentric closest approach at 2026/09/26 07:54:13 UTC
J2000 position of star is 04:51:44.2 +47:58:10
Equinox of date position of star is 04:53:44.4 +48:00:45
Star is 79 degrees from the moon. Moon is 100% illuminated.
Stellar brightness G=14.1, apparent brightess of occulting body is G=16.5
Use an exposure time of 0.30 seconds with the standard RECON-QHY system.
SNR of 9.4 per integration for unocculted signal
Expected flux drop is 90% with SNR of 8.4 for the occulted depth (per occulted point)
Apparent velocity is 15.8 km/sec on the sky relative to the star, or, 15.3 arcsec/hr.
Position angle of asteroid motion is 4.3 degrees
The recommended exposure time corresponds to 4.7 km per image.
The 1-sigma error in the time of the event is 2.5 seconds.
The 1-sigma cross-track error in the shadow position is 13.7 km.
The sky-plane scale is 3717.0 km/arcsec.
Diameter estimates:
41.9 km assuming a 5% albedo, maximum of 2.7 sec for a central chord
17.1 km assuming a 30% albedo, maximum of 1.1 sec for a central chord
Cross-track diameter of 38.4 km used for deployment plan.
Star training set for 32475_00SD234, (2026/09/26 07:54UT) Object RA Dec mag sep mel Aldebaran 04:37:27.5 +16:33:39 0.8 31.63 72 34Bet Aur 06:01:29.5 +44:56:50 1.9 12.03 90 PPM 047420 04:53:10.4 +48:47:02 5.7 0.78 79 PPM 047386 04:51:24.2 +47:14:22 7.8 0.87 78 PPM 047398 04:52:07.1 +47:54:29 8.6 0.29 79 PPM 047441 04:54:34.8 +47:53:45 10.7 0.18 79 32475_00SD234 04:53:44.4 +48:00:45 16.5 79 Positions are for equinox of date
This table contains the target star visibility for registered US sites that are relevant for this occultation. This list has been filtered to only those sites that can see the field and are within range of the shadow given the uncertainties. The observing time range has been calculated to cover the time of the event at each site with allowances for the event timing uncertainty plus time for obtaining a pre and post event baseline lightcurve. This set of stations has a 0.0 % chance of getting at least one chord. There is a 0.0% chance of 2 or more chords assuming clear weather for all.
| Site Name | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time | Xtrack (km) |
Prob |
|---|---|---|---|---|---|---|---|---|---|---|
| Cobble | 07:53:40 | -50.9 | Dark | Up | 52.8 | 52.6 | Up | 07:50:56-07:56:56 | -120.6 | 0.000 | Hodapp | 07:53:39 | -50.7 | Dark | Up | 53.1 | 52.6 | Up | 07:50:40-07:56:40 | -151.8 | 0.000 |
This table contains the target star visibility for registered RECON sites that are relevant for this occultation. This list has been filtered to only those sites that can see the field and are within range of the shadow given the uncertainties. The observing time range has been calculated to cover the time of the event at each site with allowances for the event timing uncertainty plus time for obtaining a pre and post event baseline lightcurve. This set of stations has a 54.0 % chance of getting at least one chord. There is a 0.0% chance of 2 or more chords assuming clear weather for all.
| Site Name | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time | Xtrack (km) |
Prob |
|---|---|---|---|---|---|---|---|---|---|---|
| Anarchist Mountain Observatory | 07:56:17 | -42.3 | Dark | Up | 46.4 | 64.3 | Up | 07:53:17-07:59:17 | 109.6 | 0.000 | Oliver | 07:56:19 | -42.1 | Dark | Up | 46.4 | 64.4 | Up | 07:53:28-07:59:28 | 102.4 | 0.000 | Penticton | 07:56:21 | -41.7 | Dark | Up | 46.6 | 64.7 | Up | 07:53:22-07:59:22 | 76.5 | 0.000 | Summerland | 07:56:21 | -41.7 | Dark | Up | 46.5 | 64.8 | Up | 07:53:28-07:59:28 | 75.1 | 0.000 | Peachland | 07:56:22 | -41.5 | Dark | Up | 46.5 | 64.9 | Up | 07:52:56-07:58:56 | 66.8 | 0.000 | Kelowna | 07:56:22 | -41.4 | Dark | Up | 46.7 | 65.1 | Up | 07:52:35-07:58:35 | 49.7 | 0.008 | Kamloops | 07:56:28 | -40.6 | Dark | Up | 46.6 | 65.5 | Up | 07:53:08-07:59:08 | 15.1 | 0.532 |
Star training set for 32475_00SD234, (2026/09/26 07:54UT) Object RA Dec mag sep mel Aldebaran 04:35:55.4 +16:30:29 0.8 31.63 72 34Bet Aur 05:59:31.6 +44:56:51 1.9 12.03 90 PPM 047420 04:51:09.2 +48:44:26 5.7 0.78 79 PPM 047386 04:49:25.2 +47:11:42 7.8 0.87 78 PPM 047398 04:50:07.1 +47:51:50 8.6 0.29 79 PPM 047441 04:52:34.7 +47:51:12 10.7 0.18 79 32475_00SD234 04:51:44.2 +47:58:10 16.5 79 Positions are for J2000