Event between (530664) 11SO277 and star GA0940:00208446 with event index number of 1598769
Geocentric closest approach at 2020/10/13 04:49:19 UTC
J2000 position of star is 02:26:48.6 +04:14:20
Equinox of date position of star is 02:27:52.8 +04:19:48
Stellar brightness G=16.1,
use SENSEUP=128
Star is 115 degrees from the moon.
Moon is 18% illuminated.
TNO apparent brightness V=24.8
[RECON map]
TNO is 30.5 AU from the Sun
and 29.6 AU from the Earth.
The TNO is moving 23.5
km/sec on the sky relative to the star, or,
4.0 arcsec/hr.
The 1-sigma error in the time of the event is 132 seconds.
The 1-sigma cross-track error in the shadow position is
1794 km.
The sky-plane scale is
21436.9 km/arcsec.
The TNO has an absolute magnitude Hv=10.0
Diameter=182.0 km assuming a 5% albedo -- 2.6 sec chord
Diameter=74.3 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is 1:1
Star training set for 530664, (2020/10/13 04:49UT) Object RA Dec mag sep mel Aldebaran 04:37:06.9 +16:32:58 0.8 33.96 81 68Omi Cet 02:20:23.9 -02:53:03 2.0 7.45 119 78Nu Cet 02:36:58.1 +05:40:58 4.9 2.63 112 PPM 145651 02:31:13.2 +04:41:46 8.2 0.91 114 PPM 145618 02:29:42.8 +04:18:56 10.0 0.45 114 PPM 145580 02:26:46.8 +04:01:21 10.7 0.42 115 530664 02:27:53.7 +04:19:53 16.1 114 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 13.3 km
RECON observability=1.0 and success probability=11.9%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Clarence Fulton | 04:50:28 | -34.6 | Dark | Down | 21.4 | 110.3 | Low | 04:38:58 - 05:01:58 | 2723 |
| Victoria | 04:50:40 | -33.3 | Dark | Down | 19.4 | 106.3 | Really Low | 04:39:10 - 05:02:10 | 2716 |
| Peachland | 04:50:30 | -34.6 | Dark | Down | 21.3 | 109.7 | Low | 04:39:00 - 05:02:00 | 2709 |
| Kelowna | 04:50:29 | -34.7 | Dark | Down | 21.4 | 110.0 | Low | 04:38:59 - 05:01:59 | 2709 |
| Summerland | 04:50:31 | -34.8 | Dark | Down | 21.4 | 109.7 | Low | 04:39:01 - 05:02:01 | 2702 |
| Penticton | 04:50:31 | -34.9 | Dark | Down | 21.5 | 109.8 | Low | 04:39:01 - 05:02:01 | 2697 |
| Oliver | 04:50:32 | -35.1 | Dark | Down | 21.6 | 109.7 | Low | 04:39:02 - 05:02:02 | 2681 |
| Anarchist Mountain Observatory | 04:50:33 | -35.3 | Dark | Down | 21.8 | 109.8 | Low | 04:39:03 - 05:02:03 | 2671 |
| Tonasket | 04:50:34 | -35.4 | Dark | Down | 21.8 | 109.6 | Low | 04:39:04 - 05:02:04 | 2658 |
| Okanogan | 04:50:36 | -35.5 | Dark | Down | 21.8 | 109.3 | Low | 04:39:06 - 05:02:06 | 2646 |
| Brewster | 04:50:37 | -35.5 | Dark | Down | 21.8 | 109.1 | Low | 04:39:07 - 05:02:07 | 2637 |
| Manson/Chelan | 04:50:38 | -35.4 | Dark | Down | 21.7 | 108.7 | Low | 04:39:08 - 05:02:08 | 2634 |
| Entiat | 04:50:39 | -35.5 | Dark | Down | 21.7 | 108.6 | Low | 04:39:09 - 05:02:09 | 2625 |
| Wenatchee | 04:50:40 | -35.6 | Dark | Down | 21.7 | 108.4 | Low | 04:39:10 - 05:02:10 | 2615 |
| Ellensburg | 04:50:42 | -35.7 | Dark | Down | 21.7 | 108.1 | Low | 04:39:12 - 05:02:12 | 2600 |
| Yakima | 04:50:44 | -35.9 | Dark | Down | 21.8 | 107.9 | Low | 04:39:14 - 05:02:14 | 2581 |
| Toppenish/White Swan | 04:50:45 | -36.1 | Dark | Down | 22.0 | 107.9 | Low | 04:39:15 - 05:02:15 | 2568 |
| Goldendale | 04:50:48 | -36.2 | Dark | Down | 21.9 | 107.4 | Low | 04:39:18 - 05:02:18 | 2549 |
| The Dalles | 04:50:49 | -36.0 | Dark | Down | 21.7 | 107.0 | Low | 04:39:19 - 05:02:19 | 2544 |
| Pasco | 04:50:44 | -36.9 | Dark | Down | 22.9 | 108.9 | Low | 04:39:14 - 05:02:14 | 2539 |
| PNWRO | 04:50:44 | -37.2 | Dark | Down | 23.1 | 109.0 | Low | 04:39:14 - 05:02:14 | 2523 |
| Maupin | 04:50:49 | -36.3 | Dark | Down | 21.9 | 107.0 | Low | 04:39:19 - 05:02:19 | 2522 |
| Sisters | 04:50:49 | -36.4 | Dark | Down | 21.8 | 106.2 | Low | 04:39:19 - 05:02:19 | 2490 |
| Redmond | 04:50:49 | -36.7 | Dark | Down | 22.1 | 106.5 | Low | 04:39:19 - 05:02:19 | 2481 |
| Bend | 04:50:49 | -36.7 | Dark | Down | 22.1 | 106.3 | Low | 04:39:19 - 05:02:19 | 2474 |
| Oregon Observatory | 04:50:49 | -36.7 | Dark | Down | 22.0 | 106.2 | Low | 04:39:19 - 05:02:19 | 2468 |
| La Pine/Gilchrist | 04:50:49 | -36.8 | Dark | Down | 22.0 | 106.0 | Low | 04:39:19 - 05:02:19 | 2460 |
| North Lake | 04:50:49 | -37.4 | Dark | Down | 22.6 | 106.3 | Low | 04:39:19 - 05:02:19 | 2428 |
| Klamath Falls | 04:50:49 | -37.3 | Dark | Down | 22.2 | 105.3 | Low | 04:39:19 - 05:02:19 | 2403 |
| Paisley | 04:50:49 | -37.9 | Dark | Down | 23.0 | 106.4 | Low | 04:39:19 - 05:02:19 | 2396 |
| Lakeview | 04:50:49 | -38.2 | Dark | Down | 23.3 | 106.3 | Low | 04:39:19 - 05:02:19 | 2369 |
| Fall River/Burney | 04:50:49 | -38.1 | Dark | Down | 22.8 | 105.1 | Low | 04:39:19 - 05:02:19 | 2347 |
| Cedarville | 04:50:49 | -38.7 | Dark | Down | 23.6 | 106.2 | Low | 04:39:19 - 05:02:19 | 2337 |
| Susanville | 04:50:49 | -38.9 | Dark | Down | 23.5 | 105.4 | Low | 04:39:19 - 05:02:19 | 2304 |
| Greenville | 04:50:49 | -38.8 | Dark | Down | 23.4 | 105.0 | Low | 04:39:19 - 05:02:19 | 2301 |
| Gimple | 04:50:49 | -38.8 | Dark | Down | 23.4 | 105.1 | Low | 04:39:19 - 05:02:19 | 2299 |
| Quincy | 04:50:49 | -38.9 | Dark | Down | 23.4 | 104.9 | Low | 04:39:19 - 05:02:19 | 2293 |
| Portola | 04:50:49 | -39.3 | Dark | Down | 23.8 | 105.2 | Low | 04:39:19 - 05:02:19 | 2276 |
| Reno | 04:50:49 | -39.8 | Dark | Down | 24.4 | 105.6 | Low | 04:39:19 - 05:02:19 | 2248 |
| Carson City | 04:50:49 | -40.0 | Dark | Down | 24.5 | 105.5 | Low | 04:39:19 - 05:02:19 | 2235 |
| Gardnerville | 04:50:49 | -40.1 | Dark | Down | 24.6 | 105.4 | Low | 04:39:19 - 05:02:19 | 2224 |
| Yerington | 04:50:49 | -40.5 | Dark | Down | 25.0 | 105.8 | Low | 04:39:19 - 05:02:19 | 2209 |
| Hawthorne | 04:50:49 | -41.1 | Dark | Down | 25.5 | 106.0 | Low | 04:39:19 - 05:02:19 | 2176 |
| Tonopah | 04:50:49 | -42.3 | Dark | Down | 26.7 | 106.8 | Low | 04:39:19 - 05:02:19 | 2116 |
| Lee Vining | 04:51:16 | -41.1 | Dark | Down | 25.4 | 105.5 | Low | 04:39:46 - 05:02:46 | 2081 |
| Bishop | 04:51:17 | -41.9 | Dark | Down | 26.1 | 105.7 | Low | 04:39:47 - 05:02:47 | 2028 |
| Beatty | 04:51:16 | -43.3 | Dark | Down | 27.5 | 106.7 | Low | 04:39:46 - 05:02:46 | 1963 |
| CPSLO | 04:51:28 | -41.1 | Dark | Down | 24.9 | 103.2 | Low | 04:39:58 - 05:02:58 | 1942 |
| Indian Springs | 04:51:15 | -44.2 | Dark | Down | 28.4 | 107.3 | Low | 04:39:45 - 05:02:45 | 1917 |
| Niwot | 04:50:41 | -48.7 | Dark | Down | 34.6 | 117.6 | Up | 04:39:11 - 05:02:11 | 1891 |
| SwRI | 04:50:42 | -48.7 | Dark | Down | 34.6 | 117.5 | Up | 04:39:12 - 05:02:12 | 1887 |
| Henderson | 04:51:16 | -44.9 | Dark | Down | 29.1 | 107.5 | Low | 04:39:46 - 05:02:46 | 1866 |
| Searchlight/Boulder City | 04:51:17 | -45.3 | Dark | Down | 29.4 | 107.2 | Low | 04:39:47 - 05:02:47 | 1827 |
| Wildwood | 04:51:29 | -43.2 | Dark | Down | 26.8 | 104.0 | Low | 04:39:59 - 05:02:59 | 1818 |
| Patrick | 04:51:16 | -46.0 | Dark | Down | 30.2 | 108.0 | Up | 04:39:46 - 05:02:46 | 1798 |
| Laughlin/Bullhead City | 04:51:18 | -45.6 | Dark | Down | 29.7 | 107.3 | Low | 04:39:48 - 05:02:48 | 1798 |
| Kingman/Dolan Springs | 04:51:17 | -46.0 | Dark | Down | 30.1 | 107.7 | Up | 04:39:47 - 05:02:47 | 1788 |
| Mohave Valley | 04:51:19 | -45.8 | Dark | Down | 29.8 | 107.2 | Low | 04:39:49 - 05:02:49 | 1779 |
| DCO | 04:51:15 | -46.7 | Dark | Down | 30.8 | 108.3 | Up | 04:39:45 - 05:02:45 | 1761 |
| Idyllwild | 04:51:27 | -44.7 | Dark | Down | 28.5 | 105.1 | Low | 04:39:57 - 05:02:57 | 1751 |
| Lake Havasu City | 04:51:20 | -46.2 | Dark | Down | 30.1 | 107.2 | Up | 04:39:50 - 05:02:50 | 1746 |
| Parker | 04:51:21 | -46.3 | Dark | Down | 30.2 | 107.0 | Up | 04:39:51 - 05:02:51 | 1721 |
| Blythe | 04:51:23 | -46.4 | Dark | Down | 30.2 | 106.5 | Up | 04:39:53 - 05:02:53 | 1692 |
| Calipatria | 04:51:27 | -45.9 | Dark | Down | 29.6 | 105.6 | Low | 04:39:57 - 05:02:57 | 1680 |
| George/Scottsdale | 04:51:17 | -48.3 | Dark | Down | 32.3 | 108.5 | Up | 04:39:47 - 05:02:47 | 1632 |
| Yuma | 04:51:26 | -46.8 | Dark | Down | 30.4 | 106.0 | Up | 04:39:56 - 05:02:56 | 1628 |
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 530664, (2020/10/13 04:49UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 33.96 81 68Omi Cet 02:19:20.8 -02:58:45 2.0 7.45 119 78Nu Cet 02:35:52.4 +05:35:35 4.9 2.63 112 PPM 145651 02:30:07.9 +04:36:16 8.2 0.91 114 PPM 145618 02:28:37.6 +04:13:25 10.0 0.45 114 PPM 145580 02:25:41.7 +03:55:46 10.7 0.42 115 530664 02:26:48.6 +04:14:20 16.1 115 Positions are for J2000
Event circumstances last updated at 2020/06/21 22:00:53 UT
Marc W. Buie, Southwest Research Institute