Event between (470309) 07JK43 and star GA0940:05547161 with event index number of 254146
Geocentric closest approach at 2020/04/19 07:49:44 UTC
J2000 position of star is 17:52:26.2 +05:00:15
Equinox of date position of star is 17:53:20.8 +05:00:04
Stellar brightness G=15.5,
use SENSEUP=128
Star is 84 degrees from the moon.
Moon is 13% illuminated.
TNO apparent brightness V=21.1
[RECON map]
TNO is 24.7 AU from the Sun
and 24.3 AU from the Earth.
The TNO is moving 18.8
km/sec on the sky relative to the star, or,
3.8 arcsec/hr.
The 1-sigma error in the time of the event is 81 seconds.
The 1-sigma cross-track error in the shadow position is
1843 km.
The sky-plane scale is
17588.7 km/arcsec.
The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 12.8 sec chord
Diameter=97.9 km assuming a 30% albedo -- 5.2 sec chord
Dynamical classification is CENTAURS
Star training set for 470309, (2020/04/19 07:50UT) Object RA Dec mag sep mel Vega 18:37:37.6 +38:48:12 0.0 35.26 82 60Bet Oph 17:44:28.6 +04:33:37 2.8 2.28 86 PPM 164771 17:54:13.6 +06:05:55 5.8 1.12 84 PPM 164779 17:54:35.9 +04:51:22 7.8 0.32 84 PPM 164714 17:52:50.4 +04:52:31 9.0 0.19 84 470309 17:53:26.3 +05:00:03 15.5 84 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 22.4 km
RECON observability=1.0 and success probability=0.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Penticton | 07:53:19 | -29.1 | Dark | Down | 22.0 | 109.2 | Low | 07:46:02 - 08:00:36 | -7615 |
| Oroville | 07:53:20 | -29.7 | Dark | Down | 22.3 | 109.1 | Low | 07:46:03 - 08:00:37 | -7673 |
| Tonasket | 07:53:17 | -29.9 | Dark | Down | 22.4 | 109.0 | Low | 07:46:00 - 08:00:34 | -7697 |
| Okanogan | 07:53:17 | -30.3 | Dark | Down | 22.4 | 108.8 | Low | 07:46:00 - 08:00:34 | -7735 |
| Brewster | 07:53:18 | -30.5 | Dark | Down | 22.4 | 108.5 | Low | 07:46:01 - 08:00:35 | -7768 |
| Manson/Chelan | 07:53:18 | -30.7 | Dark | Down | 22.2 | 108.1 | Low | 07:46:01 - 08:00:35 | -7799 |
| Entiat | 07:53:18 | -30.9 | Dark | Down | 22.2 | 108.0 | Low | 07:46:01 - 08:00:35 | -7824 |
| Wenatchee | 07:53:16 | -31.2 | Dark | Down | 22.2 | 107.8 | Low | 07:45:59 - 08:00:33 | -7852 |
| Ellensburg | 07:53:17 | -31.6 | Dark | Down | 22.2 | 107.4 | Low | 07:46:00 - 08:00:34 | -7901 |
| Pasco | 07:53:13 | -32.4 | Dark | Down | 23.4 | 108.3 | Low | 07:45:56 - 08:00:30 | -7935 |
| Yakima | 07:53:15 | -32.0 | Dark | Down | 22.3 | 107.3 | Low | 07:45:58 - 08:00:32 | -7942 |
| PNWRO | 07:53:12 | -32.6 | Dark | Down | 23.6 | 108.4 | Low | 07:45:55 - 08:00:29 | -7954 |
| Toppenish/White Swan | 07:53:15 | -32.2 | Dark | Down | 22.5 | 107.3 | Low | 07:45:58 - 08:00:32 | -7959 |
| George/Umatilla | 07:53:13 | -32.7 | Dark | Down | 23.3 | 108.0 | Low | 07:45:56 - 08:00:30 | -7976 |
| Niwot | 07:52:39 | -37.1 | Dark | Down | 35.0 | 116.8 | Up | 07:45:22 - 07:59:56 | -7987 |
| Goldendale | 07:53:15 | -32.8 | Dark | Down | 22.4 | 106.7 | Low | 07:45:58 - 08:00:32 | -8027 |
| The Dalles | 07:53:15 | -33.0 | Dark | Down | 22.2 | 106.4 | Low | 07:45:58 - 08:00:32 | -8060 |
| Maupin | 07:53:14 | -33.4 | Dark | Down | 22.4 | 106.3 | Low | 07:45:57 - 08:00:31 | -8100 |
| Madras/Culver | 07:53:12 | -33.9 | Dark | Down | 22.5 | 106.0 | Low | 07:45:55 - 08:00:29 | -8156 |
| Redmond | 07:53:12 | -34.3 | Dark | Down | 22.6 | 105.8 | Low | 07:45:55 - 08:00:29 | -8194 |
| Sisters | 07:53:12 | -34.3 | Dark | Down | 22.3 | 105.5 | Low | 07:45:55 - 08:00:29 | -8203 |
| Bend | 07:53:11 | -34.5 | Dark | Down | 22.5 | 105.6 | Low | 07:45:54 - 08:00:28 | -8219 |
| Oregon Observatory | 07:53:11 | -34.7 | Dark | Down | 22.5 | 105.5 | Low | 07:45:54 - 08:00:28 | -8241 |
| La Pine/Gilchrist | 07:53:13 | -34.9 | Dark | Down | 22.5 | 105.4 | Low | 07:45:56 - 08:00:30 | -8263 |
| North Lake | 07:53:09 | -35.3 | Dark | Down | 23.0 | 105.6 | Low | 07:45:52 - 08:00:26 | -8289 |
| Paisley | 07:53:08 | -35.9 | Dark | Down | 23.4 | 105.7 | Low | 07:45:51 - 08:00:25 | -8334 |
| Lakeview | 07:53:07 | -36.4 | Dark | Down | 23.7 | 105.6 | Low | 07:45:50 - 08:00:24 | -8379 |
| Chiloquin | 07:53:09 | -36.0 | Dark | Down | 22.5 | 104.6 | Low | 07:45:52 - 08:00:26 | -8385 |
| Klamath Falls | 07:53:09 | -36.3 | Dark | Down | 22.7 | 104.5 | Low | 07:45:52 - 08:00:26 | -8417 |
| Tulelake | 07:53:09 | -36.6 | Dark | Down | 22.9 | 104.7 | Low | 07:45:52 - 08:00:26 | -8435 |
| Cedarville | 07:53:04 | -37.1 | Dark | Down | 24.0 | 105.4 | Low | 07:45:47 - 08:00:21 | -8439 |
| Fall River/Burney | 07:53:05 | -37.5 | Dark | Down | 23.2 | 104.3 | Low | 07:45:48 - 08:00:22 | -8523 |
| Susanville | 07:53:03 | -38.2 | Dark | Down | 23.9 | 104.6 | Low | 07:45:46 - 08:00:20 | -8563 |
| Gimple | 07:53:03 | -38.4 | Dark | Down | 23.8 | 104.3 | Low | 07:45:46 - 08:00:20 | -8597 |
| Greenville | 07:53:02 | -38.4 | Dark | Down | 23.8 | 104.3 | Low | 07:45:45 - 08:00:19 | -8600 |
| Portola | 07:53:04 | -38.8 | Dark | Down | 24.2 | 104.5 | Low | 07:45:47 - 08:00:21 | -8617 |
| Quincy | 07:53:03 | -38.6 | Dark | Down | 23.8 | 104.2 | Low | 07:45:46 - 08:00:20 | -8619 |
| Reno | 07:53:00 | -39.1 | Dark | Down | 24.7 | 104.8 | Low | 07:45:43 - 08:00:17 | -8623 |
| Yerington | 07:52:57 | -39.6 | Dark | Down | 25.4 | 105.1 | Low | 07:45:40 - 08:00:14 | -8656 |
| Carson City | 07:52:59 | -39.4 | Dark | Down | 24.9 | 104.7 | Low | 07:45:42 - 08:00:16 | -8657 |
| Tonopah | 07:52:54 | -40.6 | Dark | Down | 27.1 | 106.0 | Low | 07:45:37 - 08:00:11 | -8679 |
| Gardnerville | 07:52:58 | -39.7 | Dark | Down | 24.9 | 104.6 | Low | 07:45:41 - 08:00:15 | -8680 |
| Hawthorne | 07:52:56 | -40.1 | Dark | Down | 25.9 | 105.2 | Low | 07:45:39 - 08:00:13 | -8683 |
| Lee Vining | 07:52:55 | -40.7 | Dark | Down | 25.7 | 104.6 | Low | 07:45:38 - 08:00:12 | -8754 |
| Indian Springs | 07:52:49 | -42.0 | Dark | Down | 28.7 | 106.4 | Low | 07:45:32 - 08:00:06 | -8763 |
| Beatty | 07:52:49 | -41.7 | Dark | Down | 27.7 | 105.7 | Low | 07:45:32 - 08:00:06 | -8773 |
| Henderson | 07:52:43 | -42.5 | Dark | Down | 29.3 | 106.6 | Low | 07:45:26 - 08:00:00 | -8787 |
| Bishop | 07:52:52 | -41.3 | Dark | Down | 26.4 | 104.8 | Low | 07:45:35 - 08:00:09 | -8787 |
| DCO | 07:52:41 | -43.3 | Dark | Down | 31.0 | 107.3 | Up | 07:45:24 - 07:59:58 | -8800 |
| Patrick | 07:52:42 | -43.0 | Dark | Down | 30.4 | 107.0 | Up | 07:45:25 - 07:59:59 | -8801 |
| Kingman/Dolan Springs | 07:52:39 | -43.3 | Dark | Down | 30.3 | 106.7 | Up | 07:45:22 - 07:59:56 | -8829 |
| Searchlight/Boulder City | 07:52:43 | -43.0 | Dark | Down | 29.5 | 106.3 | Low | 07:45:26 - 08:00:00 | -8838 |
| Lone Pine | 07:52:52 | -42.0 | Dark | Down | 26.8 | 104.7 | Low | 07:45:35 - 08:00:09 | -8848 |
| Laughlin/Bullhead City | 07:52:41 | -43.3 | Dark | Down | 29.9 | 106.4 | Low | 07:45:24 - 07:59:58 | -8852 |
| Mohave Valley | 07:52:40 | -43.6 | Dark | Down | 30.0 | 106.2 | Low | 07:45:23 - 07:59:57 | -8877 |
| Lake Havasu City | 07:52:39 | -44.0 | Dark | Down | 30.3 | 106.2 | Up | 07:45:22 - 07:59:56 | -8904 |
| Parker | 07:52:39 | -44.3 | Dark | Down | 30.4 | 106.0 | Up | 07:45:22 - 07:59:56 | -8935 |
| Blythe | 07:52:36 | -44.9 | Dark | Down | 30.3 | 105.5 | Up | 07:45:19 - 07:59:53 | -8995 |
| CPSLO | 07:52:50 | -43.3 | Dark | Down | 25.1 | 102.3 | Low | 07:45:33 - 08:00:07 | -9060 |
| Idyllwild | 07:52:41 | -44.9 | Dark | Down | 28.6 | 104.1 | Low | 07:45:24 - 07:59:58 | -9068 |
| Calipatria | 07:52:38 | -45.4 | Dark | Down | 29.7 | 104.6 | Low | 07:45:21 - 07:59:55 | -9078 |
| Yuma | 07:52:32 | -45.8 | Dark | Down | 30.5 | 104.9 | Up | 07:45:15 - 07:59:49 | -9082 |
| Wildwood | 07:52:45 | -44.5 | Dark | Down | 27.0 | 103.1 | Low | 07:45:28 - 08:00:02 | -9104 |
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, (2020/04/19 07:50UT) Object RA Dec mag sep mel Vega 18:36:56.6 +38:47:06 0.0 35.26 82 60Bet Oph 17:43:28.3 +04:34:05 2.8 2.28 86 PPM 164771 17:53:14.0 +06:06:06 5.8 1.12 84 PPM 164779 17:53:35.8 +04:51:33 7.8 0.32 84 PPM 164714 17:51:50.3 +04:52:44 9.0 0.19 84 470309 17:52:26.2 +05:00:15 15.5 84 Positions are for J2000
Event circumstances last updated at 2018/06/12 19:59:56 UT
Marc W. Buie, Southwest Research Institute