Event between (470309) 07JK43 and star GA0920:05365261 with event index number of 329803
Geocentric closest approach at 2019/05/08 10:24:40 UTC
J2000 position of star is 17:39:15.3 +03:18:56
Equinox of date position of star is 17:40:12.6 +03:18:22
Stellar brightness G=15.9,
use SENSEUP=128
Star is 154 degrees from the moon.
Moon is 14% illuminated.
TNO apparent brightness V=21.0
[RECON map]
TNO is 24.5 AU from the Sun
and 23.8 AU from the Earth.
The TNO is moving 21.6
km/sec on the sky relative to the star, or,
4.5 arcsec/hr.
The 1-sigma error in the time of the event is 55 seconds.
The 1-sigma cross-track error in the shadow position is
1185 km.
The sky-plane scale is
17230.1 km/arcsec.
The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 11.1 sec chord
Diameter=97.9 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is CENTAURR
Star training set for 470309, (2019/05/08 10:25UT) Object RA Dec mag sep mel Antares 16:30:35.8 -26:28:24 0.9 34.21 158 60Bet Oph 17:44:25.8 +04:33:38 2.8 1.64 153 PPM 164135 17:32:19.7 +02:42:42 6.5 2.06 154 PPM 164378 17:40:29.2 +03:22:59 8.0 0.10 154 470309 17:40:13.3 +03:18:22 15.9 154 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 13.4 km
RECON observability=1.0 and success probability=14.2%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Niwot | 10:25:50 | -15.0 | AT | Down | 51.5 | 200.2 | Up | 10:20:46 - 10:30:55 | -1372 |
| SwRI | 10:25:49 | -15.2 | AT | Down | 51.6 | 200.1 | Up | 10:20:45 - 10:30:54 | -1384 |
| Kelowna | 10:26:55 | -15.0 | AT | Down | 43.4 | 177.9 | Up | 10:21:51 - 10:32:00 | -1437 |
| Summerland | 10:26:56 | -15.2 | AT | Down | 43.4 | 177.4 | Up | 10:21:52 - 10:32:01 | -1455 |
| Penticton | 10:26:54 | -15.4 | AT | Down | 43.8 | 177.7 | Up | 10:21:50 - 10:31:59 | -1467 |
| Okanagan Falls | 10:26:55 | -15.5 | AT | Down | 43.9 | 177.6 | Up | 10:21:51 - 10:32:00 | -1480 |
| Oliver | 10:26:54 | -15.7 | AT | Down | 44.1 | 177.7 | Up | 10:21:49 - 10:31:58 | -1489 |
| Anarchist Mountain Observatory | 10:26:53 | -15.7 | AT | Down | 44.3 | 177.9 | Up | 10:21:49 - 10:31:58 | -1492 |
| Oroville | 10:26:53 | -15.8 | AT | Down | 44.4 | 177.8 | Up | 10:21:48 - 10:31:57 | -1500 |
| Tonasket | 10:26:53 | -16.0 | AT | Down | 44.6 | 177.8 | Up | 10:21:48 - 10:31:57 | -1514 |
| Okanogan | 10:26:53 | -16.3 | AT | Down | 44.9 | 177.6 | Up | 10:21:48 - 10:31:57 | -1543 |
| Brewster | 10:26:52 | -16.6 | AT | Down | 45.2 | 177.3 | Up | 10:21:48 - 10:31:57 | -1569 |
| Manson/Chelan | 10:26:53 | -16.9 | AT | Down | 45.4 | 176.8 | Up | 10:21:49 - 10:31:58 | -1599 |
| Entiat | 10:26:52 | -17.1 | AT | Down | 45.6 | 176.6 | Up | 10:21:48 - 10:31:57 | -1617 |
| Wenatchee | 10:26:52 | -17.4 | AT | Down | 45.9 | 176.5 | Up | 10:21:48 - 10:31:57 | -1638 |
| Pasco | 10:26:47 | -17.8 | AT | Down | 47.0 | 178.1 | Up | 10:21:42 - 10:31:51 | -1660 |
| PNWRO | 10:26:46 | -17.9 | AT | Down | 47.3 | 178.5 | Up | 10:21:42 - 10:31:51 | -1666 |
| Ellensburg | 10:26:52 | -17.8 | AT | Down | 46.3 | 176.1 | Up | 10:21:48 - 10:31:57 | -1676 |
| George/Umatilla | 10:26:47 | -18.2 | Dark | Down | 47.4 | 177.8 | Up | 10:21:42 - 10:31:51 | -1692 |
| Yakima | 10:26:51 | -18.1 | Dark | Down | 46.7 | 176.1 | Up | 10:21:47 - 10:31:56 | -1704 |
| Toppenish/White Swan | 10:26:50 | -18.2 | Dark | Down | 46.9 | 176.3 | Up | 10:21:46 - 10:31:55 | -1710 |
| Goldendale | 10:26:51 | -18.9 | Dark | Down | 47.4 | 175.6 | Up | 10:21:46 - 10:31:55 | -1768 |
| The Dalles | 10:26:51 | -19.2 | Dark | Down | 47.6 | 175.1 | Up | 10:21:47 - 10:31:56 | -1800 |
| Maupin | 10:26:50 | -19.5 | Dark | Down | 48.0 | 175.2 | Up | 10:21:45 - 10:31:54 | -1824 |
| Madras/Culver | 10:26:50 | -19.9 | Dark | Down | 48.6 | 175.1 | Up | 10:21:45 - 10:31:54 | -1864 |
| Redmond | 10:26:49 | -20.2 | Dark | Down | 48.9 | 175.0 | Up | 10:21:44 - 10:31:53 | -1891 |
| Sisters | 10:26:50 | -20.4 | Dark | Down | 48.9 | 174.4 | Up | 10:21:45 - 10:31:54 | -1909 |
| Bend | 10:26:49 | -20.5 | Dark | Down | 49.1 | 174.7 | Up | 10:21:44 - 10:31:53 | -1913 |
| Oregon Observatory | 10:26:48 | -20.7 | Dark | Down | 49.3 | 174.5 | Up | 10:21:44 - 10:31:53 | -1931 |
| La Pine/Gilchrist | 10:26:48 | -20.9 | Dark | Down | 49.5 | 174.4 | Up | 10:21:44 - 10:31:53 | -1949 |
| North Lake | 10:26:46 | -20.9 | Dark | Down | 50.0 | 175.2 | Up | 10:21:41 - 10:31:50 | -1950 |
| Paisley | 10:26:43 | -21.2 | Dark | Down | 50.5 | 175.7 | Up | 10:21:39 - 10:31:48 | -1972 |
| Lakeview | 10:26:42 | -21.5 | Dark | Down | 51.1 | 176.0 | Up | 10:21:38 - 10:31:47 | -1999 |
| Cedarville | 10:26:39 | -22.0 | Dark | Down | 51.7 | 176.2 | Up | 10:21:34 - 10:31:43 | -2037 |
| Chiloquin | 10:26:46 | -21.9 | Dark | Down | 50.6 | 173.7 | Up | 10:21:42 - 10:31:51 | -2046 |
| Klamath Falls | 10:26:46 | -22.2 | Dark | Down | 50.9 | 173.8 | Up | 10:21:41 - 10:31:50 | -2066 |
| Tulelake | 10:26:45 | -22.2 | Dark | Down | 51.2 | 174.2 | Up | 10:21:40 - 10:31:49 | -2071 |
| DCO | 10:26:01 | -23.1 | Dark | Down | 57.9 | 188.5 | Up | 10:20:56 - 10:31:05 | -2133 |
| Fall River/Burney | 10:26:43 | -22.9 | Dark | Down | 52.1 | 174.2 | Up | 10:21:38 - 10:31:47 | -2133 |
| Tonopah | 10:26:22 | -23.2 | Dark | Down | 55.3 | 180.9 | Up | 10:21:18 - 10:31:27 | -2136 |
| Susanville | 10:26:38 | -23.1 | Dark | Down | 52.8 | 175.3 | Up | 10:21:33 - 10:31:42 | -2142 |
| Patrick | 10:26:04 | -23.3 | Dark | Down | 57.7 | 187.1 | Up | 10:21:00 - 10:31:09 | -2149 |
| Indian Springs | 10:26:13 | -23.4 | Dark | Down | 56.7 | 183.7 | Up | 10:21:09 - 10:31:18 | -2163 |
| Reno | 10:26:33 | -23.4 | Dark | Down | 53.7 | 176.6 | Up | 10:21:29 - 10:31:38 | -2163 |
| Henderson | 10:26:09 | -23.4 | Dark | Down | 57.2 | 185.0 | Up | 10:21:05 - 10:31:14 | -2164 |
| Yerington | 10:26:31 | -23.5 | Dark | Down | 54.3 | 177.6 | Up | 10:21:26 - 10:31:35 | -2170 |
| Gimple | 10:26:38 | -23.4 | Dark | Down | 53.1 | 174.9 | Up | 10:21:33 - 10:31:42 | -2173 |
| Kingman/Dolan Springs | 10:26:04 | -23.5 | Dark | Down | 58.0 | 186.8 | Up | 10:20:59 - 10:31:08 | -2176 |
| Hawthorne | 10:26:27 | -23.6 | Dark | Down | 54.8 | 178.5 | Up | 10:21:23 - 10:31:32 | -2176 |
| Portola | 10:26:36 | -23.5 | Dark | Down | 53.4 | 175.5 | Up | 10:21:32 - 10:31:41 | -2177 |
| Greenville | 10:26:39 | -23.4 | Dark | Down | 53.1 | 174.8 | Up | 10:21:34 - 10:31:43 | -2177 |
| Carson City | 10:26:33 | -23.6 | Dark | Down | 54.1 | 176.6 | Up | 10:21:28 - 10:31:37 | -2188 |
| Quincy | 10:26:38 | -23.6 | Dark | Down | 53.3 | 174.8 | Up | 10:21:34 - 10:31:43 | -2192 |
| Beatty | 10:26:18 | -23.8 | Dark | Down | 56.4 | 181.8 | Up | 10:21:14 - 10:31:23 | -2197 |
| Searchlight/Boulder City | 10:26:08 | -23.8 | Dark | Down | 57.7 | 185.2 | Up | 10:21:03 - 10:31:12 | -2203 |
| Gardnerville | 10:26:32 | -23.8 | Dark | Down | 54.3 | 176.6 | Up | 10:21:27 - 10:31:36 | -2204 |
| Laughlin/Bullhead City | 10:26:05 | -23.8 | Dark | Down | 58.0 | 185.9 | Up | 10:21:01 - 10:31:10 | -2206 |
| Mohave Valley | 10:26:05 | -24.0 | Dark | Down | 58.3 | 185.9 | Up | 10:21:01 - 10:31:10 | -2226 |
| Lake Havasu City | 10:26:03 | -24.2 | Dark | Down | 58.7 | 186.4 | Up | 10:20:59 - 10:31:08 | -2241 |
| Lee Vining | 10:26:27 | -24.2 | Dark | Down | 55.3 | 177.6 | Up | 10:21:23 - 10:31:32 | -2244 |
| Bishop | 10:26:24 | -24.3 | Dark | Down | 55.9 | 178.9 | Up | 10:21:20 - 10:31:29 | -2250 |
| Parker | 10:26:02 | -24.4 | Dark | Down | 59.0 | 186.5 | Up | 10:20:57 - 10:31:06 | -2266 |
| Lone Pine | 10:26:21 | -24.7 | Dark | Down | 56.7 | 179.4 | Up | 10:21:17 - 10:31:26 | -2288 |
| Blythe | 10:26:02 | -24.9 | Dark | Down | 59.6 | 186.1 | Up | 10:20:57 - 10:31:06 | -2322 |
| Yuma | 10:25:59 | -25.6 | Dark | Down | 60.5 | 186.1 | Up | 10:20:55 - 10:31:04 | -2393 |
| Calipatria | 10:26:04 | -25.8 | Dark | Down | 60.1 | 184.3 | Up | 10:20:59 - 10:31:08 | -2411 |
| Idyllwild | 10:26:09 | -26.1 | Dark | Down | 59.6 | 181.9 | Up | 10:21:05 - 10:31:14 | -2431 |
| Wildwood | 10:26:16 | -26.9 | Dark | Down | 59.2 | 178.3 | Up | 10:21:12 - 10:31:21 | -2508 |
| CPSLO | 10:26:26 | -27.1 | Dark | Down | 57.9 | 174.5 | Up | 10:21:22 - 10:31:31 | -2527 |
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, (2019/05/08 10:25UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 34.21 158 60Bet Oph 17:43:28.3 +04:34:05 2.8 1.64 153 PPM 164135 17:31:21.4 +02:43:30 6.5 2.06 154 PPM 164378 17:39:31.2 +03:23:33 8.0 0.10 154 470309 17:39:15.3 +03:18:56 15.9 154 Positions are for J2000
Event circumstances last updated at 2019/02/12 07:39:03 UT
Marc W. Buie, Southwest Research Institute