Event between (585899) 20HM98 and star GA0680:05470441 with event index number of 2548051
Geocentric closest approach at 2022/12/23 12:05:27 UTC
J2000 position of star is 12:26:21.6 -21:39:26
Equinox of date position of star is 12:27:30.1 -21:46:40
Stellar brightness G=16.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 77 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=22.2
[RECON map]
TNO is 13.8 AU from the Sun
and 14.0 AU from the Earth.
The TNO is moving 15.6
km/sec on the sky relative to the star, or,
5.5 arcsec/hr.
The 1-sigma error in the time of the event is 43 seconds.
The 1-sigma cross-track error in the shadow position is
796 km.
The sky-plane scale is
10175.6 km/arcsec.
The TNO has an absolute magnitude Hv=10.4
Diameter=50.1 km assuming a 5% albedo -- 3.2 sec chord
Diameter=20.5 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
Star training set for 585899, (2022/12/23 12:05UT) Object RA Dec mag sep mel Spica 13:26:24.4 -11:16:50 1.0 17.56 69 9Bet Crv 12:35:35.9 -23:31:25 2.6 2.54 75 5Zet Crv 12:21:45.3 -22:20:36 5.1 1.46 78 PPM 260360 12:28:42.3 -21:21:12 7.9 0.51 77 PPM 260355 12:28:21.7 -21:50:37 9.4 0.19 77 585899 12:27:33.7 -21:47:03 16.0 77 Positions are for equinox of date
This table contains the target star visibility for the RECON
network. The observing range has been set to a maximum of
5.0 sigma about the mid-time.
The median site spacing is 7.5 km
RECON observability=0.5 and success probability=1.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Chiloquin | 12:01:55 | -38.2 | Dark | Down | 17.7 | 145.0 | Really Low | 11:57:51 - 12:05:58 | 3527 |
| Klamath Falls | 12:01:56 | -38.1 | Dark | Down | 18.0 | 145.1 | Really Low | 11:57:53 - 12:06:00 | 3527 |
| Fall River/Burney | 12:02:00 | -37.9 | Dark | Down | 19.2 | 145.2 | Really Low | 11:57:57 - 12:06:04 | 3520 |
| Quincy | 12:02:04 | -37.5 | Dark | Down | 20.3 | 145.4 | Low | 11:58:01 - 12:06:08 | 3506 |
| CPSLO | 12:02:25 | -37.0 | Dark | Down | 24.3 | 144.6 | Low | 11:58:22 - 12:06:29 | 3506 |
| Greenville | 12:02:03 | -37.5 | Dark | Down | 20.1 | 145.4 | Low | 11:58:00 - 12:06:07 | 3505 |
| Gimple | 12:02:03 | -37.5 | Dark | Down | 20.2 | 145.5 | Low | 11:57:59 - 12:06:06 | 3500 |
| La Pine/Gilchrist | 12:01:49 | -37.9 | Dark | Down | 16.9 | 145.5 | Really Low | 11:57:46 - 12:05:53 | 3495 |
| Victoria | 12:01:34 | -38.8 | Dark | Down | 12.2 | 144.5 | Really Low | 11:57:31 - 12:05:38 | 3494 |
| Sisters | 12:01:48 | -37.9 | Dark | Down | 16.4 | 145.6 | Really Low | 11:57:44 - 12:05:51 | 3490 |
| Oregon Observatory | 12:01:48 | -37.9 | Dark | Down | 16.8 | 145.6 | Really Low | 11:57:45 - 12:05:52 | 3490 |
| Susanville | 12:02:02 | -37.3 | Dark | Down | 20.0 | 145.7 | Low | 11:57:59 - 12:06:06 | 3488 |
| Portola | 12:02:03 | -37.1 | Dark | Down | 20.6 | 145.7 | Low | 11:57:59 - 12:06:06 | 3483 |
| Bend | 12:01:48 | -37.8 | Dark | Down | 16.7 | 145.8 | Really Low | 11:57:44 - 12:05:51 | 3481 |
| North Lake | 12:01:49 | -37.5 | Dark | Down | 17.6 | 146.0 | Really Low | 11:57:45 - 12:05:52 | 3472 |
| Redmond | 12:01:45 | -37.7 | Dark | Down | 16.6 | 145.9 | Really Low | 11:57:41 - 12:05:48 | 3471 |
| Paisley | 12:01:51 | -37.2 | Dark | Down | 18.2 | 146.2 | Really Low | 11:57:47 - 12:05:54 | 3461 |
| Lakeview | 12:01:52 | -37.1 | Dark | Down | 18.7 | 146.3 | Really Low | 11:57:49 - 12:05:56 | 3457 |
| Cedarville | 12:01:54 | -37.0 | Dark | Down | 19.3 | 146.3 | Really Low | 11:57:51 - 12:05:58 | 3454 |
| Maupin | 12:01:42 | -37.5 | Dark | Down | 15.9 | 146.1 | Really Low | 11:57:39 - 12:05:46 | 3453 |
| The Dalles | 12:01:40 | -37.6 | Dark | Down | 15.5 | 146.1 | Really Low | 11:57:37 - 12:05:44 | 3451 |
| Carson City | 12:02:04 | -36.6 | Dark | Down | 21.4 | 146.2 | Low | 11:58:01 - 12:06:08 | 3451 |
| Reno | 12:02:02 | -36.6 | Dark | Down | 21.1 | 146.3 | Low | 11:57:58 - 12:06:05 | 3450 |
| Gardnerville | 12:02:06 | -36.6 | Dark | Down | 21.6 | 146.2 | Low | 11:58:02 - 12:06:09 | 3450 |
| Goldendale | 12:01:38 | -37.3 | Dark | Down | 15.4 | 146.4 | Really Low | 11:57:34 - 12:05:41 | 3431 |
| Lee Vining | 12:02:07 | -36.0 | Dark | Down | 22.7 | 146.5 | Low | 11:58:03 - 12:06:10 | 3420 |
| Yerington | 12:02:03 | -36.1 | Dark | Down | 21.8 | 146.7 | Low | 11:57:59 - 12:06:06 | 3418 |
| Yakima | 12:01:34 | -37.1 | Dark | Down | 14.9 | 146.8 | Really Low | 11:57:31 - 12:05:38 | 3406 |
| Toppenish/White Swan | 12:01:33 | -37.0 | Dark | Down | 15.1 | 146.9 | Really Low | 11:57:30 - 12:05:37 | 3401 |
| Ellensburg | 12:01:33 | -37.1 | Dark | Down | 14.5 | 146.8 | Really Low | 11:57:30 - 12:05:37 | 3398 |
| Hawthorne | 12:02:03 | -35.7 | Dark | Down | 22.5 | 147.1 | Low | 11:57:59 - 12:06:06 | 3391 |
| Wildwood | 12:02:24 | -35.2 | Dark | Down | 26.2 | 146.1 | Low | 11:58:20 - 12:06:27 | 3387 |
| Bishop | 12:02:06 | -35.4 | Dark | Down | 23.5 | 147.1 | Low | 11:58:03 - 12:06:10 | 3380 |
| Wenatchee | 12:01:31 | -36.9 | Dark | Down | 14.3 | 147.1 | Really Low | 11:57:27 - 12:05:34 | 3380 |
| Manson/Chelan | 12:01:29 | -36.7 | Dark | Down | 13.9 | 147.3 | Really Low | 11:57:26 - 12:05:33 | 3364 |
| Pasco | 12:01:32 | -36.1 | Dark | Down | 15.7 | 148.0 | Really Low | 11:57:29 - 12:05:36 | 3343 |
| Brewster | 12:01:26 | -36.5 | Dark | Down | 13.9 | 147.6 | Really Low | 11:57:22 - 12:05:29 | 3343 |
| PNWRO | 12:01:33 | -36.0 | Dark | Down | 16.0 | 148.1 | Really Low | 11:57:29 - 12:05:36 | 3336 |
| Okanogan | 12:01:25 | -36.3 | Dark | Down | 13.7 | 147.8 | Really Low | 11:57:21 - 12:05:28 | 3328 |
| Tonasket | 12:01:23 | -36.2 | Dark | Down | 13.5 | 148.0 | Really Low | 11:57:20 - 12:05:27 | 3315 |
| Tonopah | 12:01:59 | -34.6 | Dark | Down | 23.4 | 148.3 | Low | 11:57:56 - 12:06:03 | 3314 |
| Oliver | 12:01:22 | -36.3 | Dark | Down | 13.0 | 148.0 | Really Low | 11:57:19 - 12:05:26 | 3311 |
| Peachland | 12:01:20 | -36.3 | Dark | Down | 12.5 | 147.8 | Really Low | 11:57:16 - 12:05:23 | 3309 |
| Summerland | 12:01:19 | -36.3 | Dark | Down | 12.6 | 147.9 | Really Low | 11:57:16 - 12:05:23 | 3308 |
| Anarchist Mountain Observatory | 12:01:22 | -36.1 | Dark | Down | 13.3 | 148.1 | Really Low | 11:57:19 - 12:05:26 | 3306 |
| Penticton | 12:01:20 | -36.2 | Dark | Down | 12.7 | 148.0 | Really Low | 11:57:16 - 12:05:23 | 3304 |
| Kelowna | 12:01:18 | -36.1 | Dark | Down | 12.5 | 148.1 | Really Low | 11:57:14 - 12:05:21 | 3293 |
| Beatty | 12:02:04 | -34.1 | Dark | Down | 24.6 | 148.4 | Low | 11:58:01 - 12:06:08 | 3287 |
| Clarence Fulton | 12:01:17 | -36.0 | Dark | Down | 12.2 | 148.3 | Really Low | 11:57:14 - 12:05:21 | 3278 |
| Idyllwild | 12:02:18 | -33.6 | Dark | Down | 27.4 | 147.7 | Low | 11:58:15 - 12:06:22 | 3275 |
| Indian Springs | 12:02:01 | -33.2 | Dark | Down | 25.3 | 149.3 | Low | 11:57:58 - 12:06:05 | 3224 |
| Calipatria | 12:02:17 | -32.6 | Dark | Down | 28.4 | 148.6 | Low | 11:58:14 - 12:06:21 | 3198 |
| Henderson | 12:02:03 | -32.6 | Dark | Down | 26.1 | 149.8 | Low | 11:57:59 - 12:06:06 | 3181 |
| Laughlin/Bullhead City | 12:02:05 | -32.1 | Dark | Down | 27.0 | 150.0 | Low | 11:58:02 - 12:06:09 | 3152 |
| Mohave Valley | 12:02:05 | -32.1 | Dark | Down | 27.3 | 149.9 | Low | 11:58:01 - 12:06:08 | 3151 |
| Blythe | 12:02:12 | -31.9 | Dark | Down | 28.4 | 149.6 | Low | 11:58:09 - 12:06:16 | 3144 |
| Yuma | 12:02:16 | -31.8 | Dark | Down | 29.2 | 149.3 | Low | 11:58:13 - 12:06:20 | 3139 |
| Lake Havasu City | 12:02:07 | -31.8 | Dark | Down | 27.7 | 150.1 | Low | 11:58:04 - 12:06:11 | 3133 |
| Parker | 12:02:09 | -31.7 | Dark | Down | 28.0 | 150.0 | Low | 11:58:05 - 12:06:12 | 3129 |
| Kingman/Dolan Springs | 12:02:03 | -31.7 | Dark | Down | 27.2 | 150.5 | Low | 11:58:00 - 12:06:07 | 3121 |
| Patrick | 12:02:01 | -31.6 | Dark | Down | 27.1 | 150.7 | Low | 11:57:58 - 12:06:05 | 3111 |
| George/Scottsdale | 12:02:02 | -29.7 | Dark | Down | 29.4 | 152.2 | Low | 11:57:59 - 12:06:06 | 2972 |
| Dunrhomin | 12:01:13 | -25.7 | Dark | Down | 25.5 | 160.0 | Low | 11:57:10 - 12:05:17 | 2590 |
Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.
Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.
Star training set for 585899, (2022/12/23 12:05UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 17.56 69 9Bet Crv 12:34:23.2 -23:23:49 2.6 2.54 75 5Zet Crv 12:20:33.5 -22:12:58 5.1 1.46 78 PPM 260360 12:27:30.2 -21:13:35 7.9 0.51 77 PPM 260355 12:27:09.6 -21:43:00 9.4 0.19 77 585899 12:26:21.6 -21:39:26 16.0 77 Positions are for J2000
Event circumstances last updated at 2021/10/27 00:01:18 UT
Marc W. Buie, Southwest Research Institute