Occultation event with (4754) Panthoos, event index number 4376
Regions able to see the event: US,SAmericaN,RECON,SwRI-CO
Geocentric closest approach at 2026/10/10 08:39:42 UTC
J2000 position of star is 05:59:56.3 +10:36:09
Equinox of date position of star is 06:01:25.3 +10:36:08
Star is 102 degrees from the moon. Moon is 0% illuminated.
Stellar brightness G=13.0, apparent brightess of occulting body is G=15.6
Use an exposure time of 0.12 seconds with the standard RECON-QHY system.
SNR of 11.3 per integration for unocculted signal
Expected flux drop is 92% with SNR of 10.4 for the occulted depth (per occulted point)
Apparent velocity is 6.2 km/sec on the sky relative to the star, or, 6.3 arcsec/hr.
Position angle of asteroid motion is 144.7 degrees
The recommended exposure time corresponds to 0.7 km per image.
The 1-sigma error in the time of the event is 4.8 seconds.
The 1-sigma cross-track error in the shadow position is 25.6 km.
The sky-plane scale is 3567.2 km/arcsec.
Diameter estimates:
57.8 km assuming a 5% albedo, maximum of 9.3 sec for a central chord
23.6 km assuming a 30% albedo, maximum of 3.8 sec for a central chord
Cross-track diameter of 53.0 km used for deployment plan.
Star training set for 4754_Panthoos, (2026/10/10 08:40UT) Object RA Dec mag sep mel Betelgeuse 05:56:37.3 +07:24:35 0.4 3.41 103 Bellatrix 05:26:34.1 +06:22:18 1.6 9.60 110 PPM 121631 05:58:19.3 +11:31:20 5.9 1.19 103 PPM 149749 06:01:48.1 +09:42:04 8.3 0.91 102 PPM 121723 06:01:25.9 +10:51:03 9.6 0.25 102 PPM 121722 06:01:12.9 +10:36:27 10.7 0.05 102 4754_Panthoos 06:01:25.3 +10:36:08 15.6 102 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 |
|---|---|---|---|---|---|---|---|---|---|---|
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 95.0 % chance of getting at least one chord. There is a 10.1% 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 | 08:24:05 | -46.9 | Dark | Down | 24.7 | 102.7 | Low | 08:21:10-08:27:10 | 202.2 | 0.000 | Okanogan | 08:24:07 | -47.5 | Dark | Down | 24.7 | 102.3 | Low | 08:21:13-08:27:13 | 129.2 | 0.000 | Brewster | 08:24:07 | -47.8 | Dark | Down | 24.6 | 102.0 | Low | 08:21:15-08:27:15 | 96.4 | 0.002 | Victoria | 08:23:50 | -47.9 | Dark | Down | 22.1 | 99.2 | Low | 08:21:14-08:27:14 | 81.5 | 0.010 | Manson/Chelan | 08:24:06 | -48.1 | Dark | Down | 24.4 | 101.6 | Low | 08:21:17-08:27:17 | 67.3 | 0.041 | Wenatchee | 08:24:07 | -48.6 | Dark | Down | 24.4 | 101.2 | Low | 08:21:17-08:27:17 | 13.4 | 0.566 | Royal City | 08:24:12 | -48.9 | Dark | Down | 25.0 | 101.6 | Low | 08:21:21-08:27:21 | -26.5 | 0.418 | Yakima | 08:24:09 | -49.4 | Dark | Down | 24.4 | 100.7 | Low | 08:21:23-08:27:23 | -78.6 | 0.014 | Toppenish/White Swan | 08:24:11 | -49.6 | Dark | Down | 24.6 | 100.7 | Low | 08:21:35-08:27:35 | -98.5 | 0.002 | PNWRO | 08:24:19 | -49.7 | Dark | Down | 25.7 | 101.8 | Low | 08:21:31-08:27:31 | -108.2 | 0.000 | The Dalles | 08:24:10 | -50.5 | Dark | Down | 24.2 | 99.8 | Low | 08:21:41-08:27:41 | -195.6 | 0.000 |
This table contains the target star visibility for registered SwRI-CO 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 |
|---|---|---|---|---|---|---|---|---|---|---|
Star training set for 4754_Panthoos, (2026/10/10 08:40UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 3.41 103 Bellatrix 05:25:07.8 +06:20:58 1.6 9.60 110 PPM 121631 05:56:49.6 +11:31:14 5.9 1.19 103 PPM 149749 06:00:19.7 +09:42:06 8.3 0.91 102 PPM 121723 05:59:56.7 +10:51:05 9.6 0.25 102 PPM 121722 05:59:43.9 +10:36:29 10.7 0.05 102 4754_Panthoos 05:59:56.3 +10:36:09 15.6 102 Positions are for J2000