Event between (504555) 08SO266 and star GA0860:00211619 with event index number of 228456
Geocentric closest approach at 2019/11/28 04:30:13 UTC
J2000 position of star is 02:37:36.9 -02:04:24
Equinox of date position of star is 02:38:35.9 -01:59:24
Stellar brightness G=13.2,
use SENSEUP=32
Star is 129 degrees from the moon.
Moon is 3% illuminated.
TNO apparent brightness V=21.6
[RECON map]
TNO is 33.9 AU from the Sun
and 33.0 AU from the Earth.
The TNO is moving 21.2
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 172 seconds.
The 1-sigma cross-track error in the shadow position is
1322 km.
The sky-plane scale is
23969.9 km/arcsec.
The TNO has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 16.3 sec chord
Diameter=141.6 km assuming a 30% albedo -- 6.7 sec chord
Dynamical classification is 3:2E
Star training set for 504555, (2019/11/28 04:30UT) Object RA Dec mag sep mel Aldebaran 04:37:03.9 +16:32:52 0.8 34.61 164 68Omi Cet 02:20:21.2 -02:53:18 2.0 4.65 125 81 Cet 02:38:42.1 -03:18:40 5.6 1.32 129 PPM 184872 02:40:20.3 -01:59:17 8.2 0.43 130 PPM 184825 02:37:55.8 -01:59:23 9.6 0.17 129 504555 02:38:37.5 -01:59:16 13.2 129 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 17.2 km
RECON observability=1.0 and success probability=27.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 04:30:53 | -42.4 | Dark | Down | 34.0 | 150.3 | Up | 04:16:01 - 04:45:45 | 331 |
| Summerland | 04:30:54 | -42.3 | Dark | Down | 34.2 | 149.9 | Up | 04:16:02 - 04:45:46 | 315 |
| Penticton | 04:30:54 | -42.4 | Dark | Down | 34.3 | 150.0 | Up | 04:16:02 - 04:45:46 | 310 |
| Okanagan Falls | 04:30:55 | -42.5 | Dark | Down | 34.4 | 149.9 | Up | 04:16:03 - 04:45:47 | 299 |
| Oliver | 04:30:55 | -42.5 | Dark | Down | 34.6 | 149.9 | Up | 04:16:03 - 04:45:47 | 288 |
| Anarchist Mountain Observatory | 04:30:55 | -42.7 | Dark | Down | 34.8 | 150.0 | Up | 04:16:03 - 04:45:47 | 275 |
| Oroville | 04:30:55 | -42.7 | Dark | Down | 34.8 | 149.9 | Up | 04:16:03 - 04:45:47 | 271 |
| Tonasket | 04:30:56 | -42.7 | Dark | Down | 35.0 | 149.8 | Up | 04:16:04 - 04:45:48 | 256 |
| Okanogan | 04:30:57 | -42.8 | Dark | Down | 35.3 | 149.6 | Up | 04:16:05 - 04:45:49 | 236 |
| Brewster | 04:30:58 | -42.7 | Dark | Down | 35.4 | 149.2 | Up | 04:16:06 - 04:45:50 | 221 |
| Manson/Chelan | 04:31:00 | -42.5 | Dark | Down | 35.5 | 148.7 | Up | 04:16:08 - 04:45:52 | 211 |
| Entiat | 04:31:00 | -42.6 | Dark | Down | 35.6 | 148.6 | Up | 04:16:08 - 04:45:52 | 197 |
| Wenatchee | 04:31:01 | -42.6 | Dark | Down | 35.8 | 148.4 | Up | 04:16:09 - 04:45:53 | 181 |
| Ellensburg | 04:31:03 | -42.5 | Dark | Down | 36.1 | 148.0 | Up | 04:16:11 - 04:45:55 | 156 |
| Yakima | 04:31:04 | -42.6 | Dark | Down | 36.4 | 147.8 | Up | 04:16:12 - 04:45:56 | 129 |
| Toppenish/White Swan | 04:31:04 | -42.8 | Dark | Down | 36.7 | 147.9 | Up | 04:16:12 - 04:45:56 | 113 |
| Pasco | 04:31:00 | -43.7 | Dark | Down | 37.2 | 149.3 | Up | 04:16:08 - 04:45:52 | 92 |
| Goldendale | 04:31:06 | -42.7 | Dark | Down | 37.0 | 147.2 | Up | 04:16:14 - 04:45:58 | 80 |
| PNWRO | 04:31:00 | -43.9 | Dark | Down | 37.5 | 149.5 | Up | 04:16:08 - 04:45:52 | 72 |
| George/Umatilla | 04:31:01 | -43.6 | Dark | Down | 37.5 | 148.9 | Up | 04:16:09 - 04:45:53 | 71 |
| The Dalles | 04:31:08 | -42.5 | Dark | Down | 37.1 | 146.7 | Up | 04:16:16 - 04:46:00 | 68 |
| Maupin | 04:31:08 | -42.6 | Dark | Down | 37.4 | 146.6 | Up | 04:16:16 - 04:46:00 | 38 |
| Madras/Culver | 04:31:10 | -42.7 | Dark | Down | 37.9 | 146.4 | Up | 04:16:18 - 04:46:02 | 1 |
| Redmond | 04:31:10 | -42.8 | Dark | Down | 38.2 | 146.2 | Up | 04:16:18 - 04:46:02 | -29 |
| Sisters | 04:31:10 | -42.5 | Dark | Down | 38.0 | 145.7 | Up | 04:16:18 - 04:46:02 | -47 |
| Bend | 04:31:10 | -42.7 | Dark | Down | 38.3 | 145.9 | Up | 04:16:18 - 04:46:02 | -52 |
| Oregon Observatory | 04:31:10 | -42.7 | Dark | Down | 38.4 | 145.7 | Up | 04:16:18 - 04:46:02 | -72 |
| La Pine/Gilchrist | 04:31:10 | -42.7 | Dark | Down | 38.5 | 145.5 | Up | 04:16:18 - 04:46:02 | -92 |
| North Lake | 04:31:10 | -43.2 | Dark | Down | 39.1 | 146.0 | Up | 04:16:18 - 04:46:02 | -109 |
| Paisley | 04:31:10 | -43.5 | Dark | Down | 39.7 | 146.2 | Up | 04:16:18 - 04:46:02 | -150 |
| Lakeview | 04:31:10 | -43.8 | Dark | Down | 40.2 | 146.2 | Up | 04:16:18 - 04:46:02 | -190 |
| Chiloquin | 04:31:10 | -42.6 | Dark | Down | 39.3 | 144.6 | Up | 04:16:18 - 04:46:02 | -201 |
| Klamath Falls | 04:31:10 | -42.7 | Dark | Down | 39.6 | 144.5 | Up | 04:16:18 - 04:46:02 | -226 |
| Tulelake | 04:31:10 | -43.0 | Dark | Down | 39.9 | 144.7 | Up | 04:16:18 - 04:46:02 | -237 |
| Cedarville | 04:31:10 | -44.0 | Dark | Down | 40.9 | 146.1 | Up | 04:16:18 - 04:46:02 | -243 |
| Fall River/Burney | 04:31:10 | -43.2 | Dark | Down | 40.7 | 144.4 | Up | 04:16:18 - 04:46:02 | -314 |
| Susanville | 04:31:10 | -43.9 | Dark | Down | 41.6 | 144.9 | Up | 04:16:18 - 04:46:02 | -348 |
| Gimple | 04:31:10 | -43.8 | Dark | Down | 41.7 | 144.5 | Up | 04:16:18 - 04:46:02 | -377 |
| Greenville | 04:31:10 | -43.7 | Dark | Down | 41.7 | 144.4 | Up | 04:16:18 - 04:46:02 | -380 |
| Portola | 04:31:10 | -44.1 | Dark | Down | 42.1 | 144.9 | Up | 04:16:18 - 04:46:02 | -397 |
| Quincy | 04:31:10 | -43.7 | Dark | Down | 41.8 | 144.3 | Up | 04:16:18 - 04:46:02 | -397 |
| Reno | 04:31:10 | -44.6 | Dark | Down | 42.6 | 145.5 | Up | 04:16:18 - 04:46:02 | -409 |
| Carson City | 04:31:10 | -44.7 | Dark | Down | 42.9 | 145.3 | Up | 04:16:18 - 04:46:02 | -440 |
| Yerington | 04:31:10 | -45.2 | Dark | Down | 43.4 | 146.0 | Up | 04:16:18 - 04:46:02 | -450 |
| Gardnerville | 04:31:10 | -44.8 | Dark | Down | 43.2 | 145.3 | Up | 04:16:18 - 04:46:02 | -460 |
| Hawthorne | 04:31:10 | -45.7 | Dark | Down | 44.0 | 146.4 | Up | 04:16:18 - 04:46:02 | -488 |
| Niwot | 04:30:20 | -55.2 | Dark | Down | 46.8 | 165.0 | Up | 04:15:28 - 04:45:12 | -527 |
| SwRI | 04:30:21 | -55.1 | Dark | Down | 46.9 | 164.9 | Up | 04:15:29 - 04:45:13 | -533 |
| Tonopah | 04:31:09 | -46.9 | Dark | Down | 45.0 | 148.0 | Up | 04:16:17 - 04:46:01 | -536 |
| Lee Vining | 04:31:10 | -45.4 | Dark | Down | 44.3 | 145.5 | Up | 04:16:18 - 04:46:02 | -539 |
| Bishop | 04:31:10 | -46.1 | Dark | Down | 45.1 | 146.1 | Up | 04:16:18 - 04:46:02 | -587 |
| Beatty | 04:31:10 | -47.4 | Dark | Down | 46.2 | 147.9 | Up | 04:16:18 - 04:46:02 | -635 |
| Lone Pine | 04:31:10 | -46.4 | Dark | Down | 45.9 | 146.1 | Up | 04:16:18 - 04:46:02 | -652 |
| Indian Springs | 04:31:06 | -48.3 | Dark | Down | 46.9 | 149.2 | Up | 04:16:14 - 04:45:58 | -675 |
| CPSLO | 04:31:27 | -44.5 | Dark | Down | 45.7 | 142.1 | Up | 04:16:35 - 04:46:19 | -718 |
| Henderson | 04:31:04 | -48.9 | Dark | Down | 47.6 | 149.8 | Up | 04:16:12 - 04:45:56 | -728 |
| Searchlight/Boulder City | 04:31:05 | -49.1 | Dark | Down | 48.2 | 149.6 | Up | 04:16:13 - 04:45:57 | -776 |
| Patrick | 04:31:01 | -49.9 | Dark | Down | 48.6 | 151.0 | Up | 04:16:09 - 04:45:53 | -794 |
| Laughlin/Bullhead City | 04:31:04 | -49.4 | Dark | Down | 48.6 | 149.9 | Up | 04:16:12 - 04:45:56 | -806 |
| Kingman/Dolan Springs | 04:31:02 | -49.8 | Dark | Down | 48.7 | 150.6 | Up | 04:16:10 - 04:45:54 | -811 |
| Mohave Valley | 04:31:05 | -49.4 | Dark | Down | 48.8 | 149.7 | Up | 04:16:13 - 04:45:57 | -829 |
| DCO | 04:30:59 | -50.5 | Dark | Down | 49.2 | 151.8 | Up | 04:16:07 - 04:45:51 | -829 |
| Wildwood | 04:31:22 | -46.3 | Dark | Down | 47.7 | 143.9 | Up | 04:16:30 - 04:46:14 | -845 |
| Lake Havasu City | 04:31:04 | -49.7 | Dark | Down | 49.2 | 149.8 | Up | 04:16:12 - 04:45:56 | -866 |
| Parker | 04:31:05 | -49.8 | Dark | Down | 49.6 | 149.7 | Up | 04:16:13 - 04:45:57 | -896 |
| Idyllwild | 04:31:10 | -47.8 | Dark | Down | 48.9 | 146.1 | Up | 04:16:18 - 04:46:02 | -906 |
| Blythe | 04:31:07 | -49.6 | Dark | Down | 49.9 | 149.0 | Up | 04:16:15 - 04:45:59 | -937 |
| Calipatria | 04:31:10 | -48.9 | Dark | Down | 49.9 | 147.4 | Up | 04:16:18 - 04:46:02 | -967 |
| Yuma | 04:31:08 | -49.7 | Dark | Down | 50.7 | 148.3 | Up | 04:16:16 - 04:46:00 | -1016 |
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 504555, (2019/11/28 04:30UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 34.61 164 68Omi Cet 02:19:20.8 -02:58:45 2.0 4.65 125 81 Cet 02:37:41.9 -03:23:48 5.6 1.32 129 PPM 184872 02:39:19.6 -02:04:23 8.2 0.43 130 PPM 184825 02:36:55.2 -02:04:31 9.6 0.17 129 504555 02:37:36.9 -02:04:24 13.2 129 Positions are for J2000
Event circumstances last updated at 2019/05/23 22:43:15 UT
Marc W. Buie, Southwest Research Institute