Event between (470309) 07JK43 and star GA0940:05526680 with event index number of 256973
Geocentric closest approach at 2020/04/30 09:17:21 UTC
J2000 position of star is 17:51:44.5 +05:14:33
Equinox of date position of star is 17:52:39.0 +05:14:21
Stellar brightness G=15.6,
use SENSEUP=128
Star is 133 degrees from the moon.
Moon is 45% illuminated.
TNO apparent brightness V=21.1
[RECON map]
TNO is 24.7 AU from the Sun
and 24.1 AU from the Earth.
The TNO is moving 20.3
km/sec on the sky relative to the star, or,
4.2 arcsec/hr.
The 1-sigma error in the time of the event is 84 seconds.
The 1-sigma cross-track error in the shadow position is
1659 km.
The sky-plane scale is
17498.6 km/arcsec.
The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 11.8 sec chord
Diameter=97.9 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is CENTAURS
Star training set for 470309, (2020/04/30 09:17UT) Object RA Dec mag sep mel Vega 18:37:37.6 +38:48:12 0.0 35.07 114 60Bet Oph 17:44:28.7 +04:33:37 2.8 2.17 131 PPM 164771 17:54:13.7 +06:05:55 5.8 0.94 132 PPM 164696 17:52:04.9 +05:13:30 8.2 0.16 132 PPM 164703 17:52:30.2 +05:14:26 10.3 0.06 133 470309 17:52:44.5 +05:14:20 15.6 133 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 16.3 km
RECON observability=1.0 and success probability=2.3%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Penticton | 09:18:15 | -23.0 | Dark | Up | 39.3 | 141.2 | Up | 09:10:44 - 09:25:46 | 5549 |
| Niwot | 09:17:17 | -26.1 | Dark | Down | 52.6 | 154.9 | Up | 09:09:46 - 09:24:48 | 5536 |
| Oroville | 09:18:13 | -23.5 | Dark | Up | 39.9 | 141.0 | Up | 09:10:42 - 09:25:44 | 5504 |
| Tonasket | 09:18:12 | -23.7 | Dark | Up | 40.0 | 140.9 | Up | 09:10:41 - 09:25:43 | 5484 |
| Okanogan | 09:18:13 | -24.0 | Dark | Up | 40.2 | 140.5 | Up | 09:10:42 - 09:25:44 | 5449 |
| Brewster | 09:18:13 | -24.3 | Dark | Up | 40.4 | 140.1 | Up | 09:10:42 - 09:25:44 | 5417 |
| Manson/Chelan | 09:18:14 | -24.6 | Dark | Up | 40.4 | 139.6 | Up | 09:10:43 - 09:25:45 | 5383 |
| Entiat | 09:18:13 | -24.9 | Dark | Up | 40.5 | 139.4 | Up | 09:10:42 - 09:25:44 | 5361 |
| Wenatchee | 09:18:14 | -25.1 | Dark | Up | 40.6 | 139.1 | Up | 09:10:43 - 09:25:45 | 5334 |
| Pasco | 09:18:08 | -25.9 | Dark | Up | 42.0 | 139.8 | Up | 09:10:37 - 09:25:39 | 5291 |
| Ellensburg | 09:18:13 | -25.6 | Dark | Up | 40.9 | 138.6 | Up | 09:10:42 - 09:25:44 | 5289 |
| PNWRO | 09:18:07 | -26.1 | Dark | Up | 42.3 | 140.0 | Up | 09:10:36 - 09:25:38 | 5281 |
| Yakima | 09:18:12 | -25.9 | Dark | Up | 41.2 | 138.4 | Up | 09:10:41 - 09:25:43 | 5253 |
| George/Umatilla | 09:18:08 | -26.3 | Dark | Up | 42.2 | 139.4 | Up | 09:10:37 - 09:25:39 | 5252 |
| Toppenish/White Swan | 09:18:12 | -26.1 | Dark | Up | 41.4 | 138.4 | Up | 09:10:41 - 09:25:43 | 5243 |
| Goldendale | 09:18:12 | -26.7 | Dark | Up | 41.6 | 137.6 | Up | 09:10:41 - 09:25:43 | 5175 |
| The Dalles | 09:18:12 | -27.0 | Dark | Up | 41.6 | 137.0 | Up | 09:10:41 - 09:25:43 | 5138 |
| Maupin | 09:18:10 | -27.4 | Dark | Up | 41.9 | 136.9 | Up | 09:10:39 - 09:25:41 | 5107 |
| Madras/Culver | 09:18:11 | -27.9 | Dark | Up | 42.3 | 136.5 | Up | 09:10:40 - 09:25:42 | 5057 |
| Redmond | 09:18:11 | -28.3 | Dark | Up | 42.6 | 136.2 | Up | 09:10:40 - 09:25:42 | 5024 |
| Sisters | 09:18:10 | -28.3 | Dark | Up | 42.3 | 135.8 | Up | 09:10:39 - 09:25:41 | 5007 |
| Bend | 09:18:11 | -28.5 | Dark | Up | 42.6 | 135.9 | Up | 09:10:40 - 09:25:42 | 4998 |
| Oregon Observatory | 09:18:11 | -28.7 | Dark | Up | 42.7 | 135.6 | Up | 09:10:40 - 09:25:42 | 4977 |
| La Pine/Gilchrist | 09:18:10 | -28.9 | Dark | Up | 42.8 | 135.4 | Up | 09:10:39 - 09:25:41 | 4956 |
| North Lake | 09:18:07 | -29.2 | Dark | Up | 43.4 | 135.9 | Up | 09:10:36 - 09:25:38 | 4947 |
| Paisley | 09:18:06 | -29.6 | Dark | Up | 44.0 | 135.9 | Up | 09:10:35 - 09:25:37 | 4916 |
| Lakeview | 09:18:05 | -30.0 | Dark | Up | 44.5 | 135.8 | Up | 09:10:34 - 09:25:36 | 4881 |
| Chiloquin | 09:18:09 | -30.0 | Dark | Up | 43.4 | 134.3 | Up | 09:10:38 - 09:25:40 | 4841 |
| Cedarville | 09:18:03 | -30.5 | Dark | Up | 45.0 | 135.5 | Up | 09:10:32 - 09:25:34 | 4833 |
| Klamath Falls | 09:18:08 | -30.3 | Dark | Up | 43.7 | 134.1 | Up | 09:10:37 - 09:25:39 | 4814 |
| Tulelake | 09:18:06 | -30.5 | Dark | Up | 44.0 | 134.3 | Up | 09:10:35 - 09:25:37 | 4805 |
| Fall River/Burney | 09:18:05 | -31.3 | Dark | Up | 44.7 | 133.7 | Up | 09:10:34 - 09:25:36 | 4729 |
| Susanville | 09:18:02 | -31.7 | Dark | Up | 45.5 | 134.2 | Up | 09:10:31 - 09:25:33 | 4710 |
| Tonopah | 09:17:48 | -32.8 | Dark | Down | 49.1 | 136.5 | Up | 09:10:17 - 09:25:19 | 4686 |
| Reno | 09:17:58 | -32.3 | Dark | Down | 46.6 | 134.5 | Up | 09:10:27 - 09:25:29 | 4677 |
| Gimple | 09:18:01 | -32.0 | Dark | Up | 45.6 | 133.7 | Up | 09:10:30 - 09:25:32 | 4675 |
| Greenville | 09:18:01 | -32.1 | Dark | Up | 45.6 | 133.6 | Up | 09:10:30 - 09:25:32 | 4671 |
| Portola | 09:18:00 | -32.2 | Dark | Down | 46.1 | 133.9 | Up | 09:10:29 - 09:25:31 | 4667 |
| DCO | 09:17:28 | -33.8 | Dark | Down | 53.4 | 139.4 | Up | 09:09:57 - 09:24:59 | 4665 |
| Yerington | 09:17:55 | -32.6 | Dark | Down | 47.4 | 134.9 | Up | 09:10:24 - 09:25:26 | 4663 |
| Quincy | 09:18:01 | -32.2 | Dark | Up | 45.7 | 133.5 | Up | 09:10:30 - 09:25:32 | 4653 |
| Hawthorne | 09:17:53 | -32.8 | Dark | Down | 48.0 | 135.1 | Up | 09:10:22 - 09:25:24 | 4650 |
| Patrick | 09:17:31 | -33.8 | Dark | Down | 52.8 | 138.7 | Up | 09:10:00 - 09:25:02 | 4649 |
| Carson City | 09:17:57 | -32.6 | Dark | Down | 46.9 | 134.2 | Up | 09:10:26 - 09:25:28 | 4646 |
| Indian Springs | 09:17:39 | -33.5 | Dark | Down | 51.0 | 137.3 | Up | 09:10:08 - 09:25:10 | 4644 |
| Henderson | 09:17:35 | -33.7 | Dark | Down | 51.7 | 137.7 | Up | 09:10:04 - 09:25:06 | 4638 |
| Gardnerville | 09:17:57 | -32.8 | Dark | Down | 47.1 | 134.1 | Up | 09:10:26 - 09:25:28 | 4627 |
| Kingman/Dolan Springs | 09:17:32 | -34.1 | Dark | Down | 52.9 | 138.2 | Up | 09:10:01 - 09:25:03 | 4619 |
| Beatty | 09:17:43 | -33.6 | Dark | Down | 50.1 | 136.1 | Up | 09:10:12 - 09:25:14 | 4611 |
| Searchlight/Boulder City | 09:17:35 | -34.2 | Dark | Down | 52.2 | 137.3 | Up | 09:10:04 - 09:25:06 | 4593 |
| Laughlin/Bullhead City | 09:17:33 | -34.3 | Dark | Down | 52.6 | 137.5 | Up | 09:10:02 - 09:25:04 | 4587 |
| Lee Vining | 09:17:53 | -33.5 | Dark | Down | 48.1 | 134.1 | Up | 09:10:22 - 09:25:24 | 4575 |
| Mohave Valley | 09:17:33 | -34.6 | Dark | Down | 52.8 | 137.3 | Up | 09:10:02 - 09:25:04 | 4565 |
| Bishop | 09:17:49 | -33.8 | Dark | Down | 48.9 | 134.5 | Up | 09:10:18 - 09:25:20 | 4561 |
| Lake Havasu City | 09:17:31 | -34.8 | Dark | Down | 53.2 | 137.2 | Up | 09:10:00 - 09:25:02 | 4545 |
| Parker | 09:17:28 | -35.1 | Dark | Down | 53.5 | 136.9 | Up | 09:09:57 - 09:24:59 | 4517 |
| Lone Pine | 09:17:46 | -34.4 | Dark | Down | 49.6 | 134.2 | Up | 09:10:15 - 09:25:17 | 4513 |
| Blythe | 09:17:29 | -35.7 | Dark | Down | 53.7 | 136.0 | Up | 09:09:58 - 09:25:00 | 4455 |
| Yuma | 09:17:26 | -36.5 | Dark | Down | 54.3 | 135.1 | Up | 09:09:55 - 09:24:57 | 4373 |
| Calipatria | 09:17:31 | -36.5 | Dark | Down | 53.5 | 134.3 | Up | 09:10:00 - 09:25:02 | 4357 |
| Idyllwild | 09:17:36 | -36.4 | Dark | Down | 52.4 | 133.4 | Up | 09:10:05 - 09:25:07 | 4341 |
| Wildwood | 09:17:42 | -36.8 | Dark | Down | 51.0 | 131.3 | Up | 09:10:11 - 09:25:13 | 4264 |
| CPSLO | 09:17:50 | -36.4 | Dark | Down | 48.9 | 130.0 | Up | 09:10:19 - 09:25:21 | 4257 |
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 470309, (2020/04/30 09:17UT) Object RA Dec mag sep mel Vega 18:36:56.6 +38:47:06 0.0 35.07 114 60Bet Oph 17:43:28.3 +04:34:05 2.8 2.17 131 PPM 164771 17:53:14.0 +06:06:06 5.8 0.94 132 PPM 164696 17:51:04.9 +05:13:45 8.2 0.16 132 PPM 164703 17:51:30.1 +05:14:41 10.3 0.06 133 470309 17:51:44.5 +05:14:33 15.6 133 Positions are for J2000
Event circumstances last updated at 2018/06/12 20:01:18 UT
Marc W. Buie, Southwest Research Institute