Event between (444018) 04EU95 and star GA0740:05266456 with event index number of 273954
Geocentric closest approach at 2020/06/12 05:52:01 UTC
J2000 position of star is 14:46:21.3 -14:58:20
Equinox of date position of star is 14:47:22.6 -15:02:56
Stellar brightness G=15.7,
use SENSEUP=128
Star is 117 degrees from the moon.
Moon is 60% illuminated.
TNO apparent brightness V=23.3
[RECON map]
TNO is 42.6 AU from the Sun
and 41.8 AU from the Earth.
The TNO is moving 18.7
km/sec on the sky relative to the star, or,
2.2 arcsec/hr.
The 1-sigma error in the time of the event is 173 seconds.
The 1-sigma cross-track error in the shadow position is
2356 km.
The sky-plane scale is
30291.3 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 CLASSICAL
Star training set for 444018, (2020/06/12 05:52UT) Object RA Dec mag sep mel Spica 13:26:16.4 -11:16:03 1.0 20.12 136 27Bet Lib 15:18:06.6 -09:27:26 2.6 9.34 111 5 Lib 14:47:05.6 -15:32:40 6.5 0.50 117 PPM 229272 14:47:42.4 -15:09:29 9.1 0.11 117 444018 14:47:29.1 -15:03:25 15.7 116 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 12.0 km
RECON observability=0.8 and success probability=7.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Penticton | 05:52:54 | -12.1 | AT | Down | 25.1 | 188.6 | Low | 05:37:59 - 06:07:49 | -1646 |
| Oroville | 05:52:53 | -12.7 | AT | Down | 25.7 | 188.8 | Low | 05:37:58 - 06:07:48 | -1671 |
| Tonasket | 05:52:53 | -12.9 | AT | Down | 25.9 | 188.8 | Low | 05:37:58 - 06:07:48 | -1681 |
| Okanogan | 05:52:53 | -13.1 | AT | Down | 26.3 | 188.7 | Low | 05:37:58 - 06:07:48 | -1698 |
| Brewster | 05:52:54 | -13.3 | AT | Down | 26.5 | 188.5 | Low | 05:37:59 - 06:07:49 | -1714 |
| Manson/Chelan | 05:52:54 | -13.4 | AT | Down | 26.8 | 188.1 | Low | 05:37:59 - 06:07:49 | -1730 |
| Entiat | 05:52:54 | -13.5 | AT | Down | 27.0 | 188.1 | Low | 05:37:59 - 06:07:49 | -1741 |
| Wenatchee | 05:52:54 | -13.7 | AT | Down | 27.3 | 188.0 | Low | 05:37:59 - 06:07:49 | -1755 |
| Ellensburg | 05:52:54 | -14.0 | AT | Down | 27.7 | 187.8 | Low | 05:37:59 - 06:07:49 | -1779 |
| Pasco | 05:52:48 | -15.1 | AT | Down | 28.3 | 189.3 | Low | 05:37:53 - 06:07:43 | -1789 |
| PNWRO | 05:52:47 | -15.4 | AT | Down | 28.5 | 189.6 | Low | 05:37:52 - 06:07:42 | -1798 |
| Yakima | 05:52:54 | -14.4 | AT | Down | 28.1 | 187.8 | Low | 05:37:59 - 06:07:49 | -1799 |
| Toppenish/White Swan | 05:52:53 | -14.6 | AT | Down | 28.3 | 188.0 | Low | 05:37:58 - 06:07:48 | -1806 |
| George/Umatilla | 05:52:49 | -15.4 | AT | Down | 28.7 | 189.1 | Low | 05:37:54 - 06:07:44 | -1810 |
| Goldendale | 05:52:54 | -14.9 | AT | Down | 28.9 | 187.5 | Low | 05:37:59 - 06:07:49 | -1841 |
| The Dalles | 05:52:55 | -15.0 | AT | Down | 29.1 | 187.2 | Low | 05:38:00 - 06:07:50 | -1859 |
| Maupin | 05:52:55 | -15.4 | AT | Down | 29.6 | 187.3 | Low | 05:38:00 - 06:07:50 | -1878 |
| Niwot | 05:51:41 | -24.7 | Dark | Down | 31.2 | 205.2 | Up | 05:36:46 - 06:06:36 | -1892 |
| Madras/Culver | 05:52:54 | -15.8 | AT | Down | 30.1 | 187.3 | Up | 05:37:59 - 06:07:49 | -1907 |
| Redmond | 05:52:54 | -16.1 | AT | Down | 30.5 | 187.3 | Up | 05:37:59 - 06:07:49 | -1927 |
| Sisters | 05:52:55 | -16.0 | AT | Down | 30.5 | 186.8 | Up | 05:38:00 - 06:07:50 | -1933 |
| Bend | 05:52:54 | -16.3 | AT | Down | 30.7 | 187.1 | Up | 05:37:59 - 06:07:49 | -1941 |
| Oregon Observatory | 05:52:54 | -16.4 | AT | Down | 30.9 | 187.0 | Up | 05:37:59 - 06:07:49 | -1953 |
| La Pine/Gilchrist | 05:52:55 | -16.5 | AT | Down | 31.1 | 186.9 | Up | 05:38:00 - 06:07:50 | -1965 |
| North Lake | 05:52:52 | -17.1 | AT | Down | 31.5 | 187.6 | Up | 05:37:57 - 06:07:47 | -1977 |
| Paisley | 05:52:50 | -17.7 | AT | Down | 32.0 | 188.1 | Up | 05:37:55 - 06:07:45 | -2000 |
| Lakeview | 05:52:48 | -18.2 | Dark | Down | 32.4 | 188.3 | Up | 05:37:53 - 06:07:43 | -2024 |
| Chiloquin | 05:52:55 | -17.3 | AT | Down | 32.2 | 186.6 | Up | 05:38:00 - 06:07:50 | -2032 |
| Klamath Falls | 05:52:54 | -17.6 | AT | Down | 32.5 | 186.7 | Up | 05:37:59 - 06:07:49 | -2050 |
| Cedarville | 05:52:47 | -18.8 | Dark | Down | 33.1 | 188.6 | Up | 05:37:52 - 06:07:42 | -2058 |
| Tulelake | 05:52:53 | -18.0 | AT | Down | 32.8 | 187.1 | Up | 05:37:58 - 06:07:48 | -2059 |
| Fall River/Burney | 05:52:51 | -18.8 | Dark | Down | 33.7 | 187.3 | Up | 05:37:56 - 06:07:46 | -2109 |
| Susanville | 05:52:47 | -19.6 | Dark | Down | 34.2 | 188.2 | Up | 05:37:52 - 06:07:42 | -2131 |
| Gimple | 05:52:47 | -19.8 | Dark | Down | 34.5 | 187.9 | Up | 05:37:52 - 06:07:42 | -2152 |
| Greenville | 05:52:48 | -19.7 | Dark | Down | 34.5 | 187.8 | Up | 05:37:53 - 06:07:43 | -2153 |
| Portola | 05:52:45 | -20.2 | Dark | Down | 34.8 | 188.4 | Up | 05:37:50 - 06:07:40 | -2163 |
| Quincy | 05:52:48 | -19.9 | Dark | Down | 34.7 | 187.9 | Up | 05:37:53 - 06:07:43 | -2165 |
| Reno | 05:52:42 | -20.7 | Dark | Down | 35.0 | 189.2 | Up | 05:37:47 - 06:07:37 | -2166 |
| Yerington | 05:52:39 | -21.4 | Dark | Down | 35.5 | 190.0 | Up | 05:37:44 - 06:07:34 | -2187 |
| Carson City | 05:52:41 | -21.0 | Dark | Down | 35.4 | 189.3 | Up | 05:37:46 - 06:07:36 | -2187 |
| Gardnerville | 05:52:41 | -21.2 | Dark | Down | 35.6 | 189.3 | Up | 05:37:46 - 06:07:36 | -2201 |
| Hawthorne | 05:52:36 | -22.0 | Dark | Down | 35.8 | 190.7 | Up | 05:37:41 - 06:07:31 | -2204 |
| Tonopah | 05:52:29 | -23.0 | Dark | Down | 36.1 | 192.4 | Up | 05:37:34 - 06:07:24 | -2206 |
| Lee Vining | 05:52:37 | -22.3 | Dark | Down | 36.5 | 190.2 | Up | 05:37:42 - 06:07:32 | -2249 |
| Beatty | 05:52:25 | -24.1 | Dark | Down | 37.1 | 193.1 | Up | 05:37:30 - 06:07:20 | -2269 |
| Indian Springs | 05:52:19 | -24.8 | Dark | Down | 37.3 | 194.4 | Up | 05:37:24 - 06:07:14 | -2269 |
| Bishop | 05:52:33 | -23.1 | Dark | Down | 37.0 | 191.1 | Up | 05:37:38 - 06:07:28 | -2272 |
| Henderson | 05:52:15 | -25.6 | Dark | Down | 37.6 | 195.3 | Up | 05:37:20 - 06:07:10 | -2290 |
| Patrick | 05:52:10 | -26.5 | Dark | Down | 38.0 | 196.8 | Up | 05:37:15 - 06:07:05 | -2310 |
| Lone Pine | 05:52:30 | -23.9 | Dark | Down | 37.7 | 191.6 | Up | 05:37:35 - 06:07:25 | -2313 |
| DCO | 05:52:05 | -27.0 | Dark | Down | 38.1 | 197.7 | Up | 05:37:10 - 06:07:00 | -2317 |
| Searchlight/Boulder City | 05:52:14 | -26.1 | Dark | Down | 38.2 | 195.5 | Up | 05:37:19 - 06:07:09 | -2326 |
| Kingman/Dolan Springs | 05:52:10 | -26.6 | Dark | Down | 38.2 | 196.6 | Up | 05:37:15 - 06:07:05 | -2328 |
| Laughlin/Bullhead City | 05:52:12 | -26.5 | Dark | Down | 38.4 | 196.0 | Up | 05:37:17 - 06:07:07 | -2339 |
| Mohave Valley | 05:52:11 | -26.7 | Dark | Down | 38.6 | 196.0 | Up | 05:37:16 - 06:07:06 | -2357 |
| Lake Havasu City | 05:52:10 | -27.2 | Dark | Down | 39.0 | 196.4 | Up | 05:37:15 - 06:07:05 | -2378 |
| Parker | 05:52:09 | -27.5 | Dark | Down | 39.3 | 196.5 | Up | 05:37:14 - 06:07:04 | -2401 |
| Blythe | 05:52:09 | -27.8 | Dark | Down | 39.9 | 196.3 | Up | 05:37:14 - 06:07:04 | -2442 |
| CPSLO | 05:52:40 | -23.9 | Dark | Down | 39.3 | 188.7 | Up | 05:37:45 - 06:07:35 | -2451 |
| Idyllwild | 05:52:19 | -26.9 | Dark | Down | 40.2 | 193.7 | Up | 05:37:24 - 06:07:14 | -2475 |
| Wildwood | 05:52:29 | -25.8 | Dark | Down | 40.2 | 191.4 | Up | 05:37:34 - 06:07:24 | -2489 |
| Calipatria | 05:52:13 | -27.9 | Dark | Down | 40.6 | 195.3 | Up | 05:37:18 - 06:07:08 | -2493 |
| Yuma | 05:52:08 | -28.6 | Dark | Down | 40.8 | 196.5 | Up | 05:37:13 - 06:07:03 | -2506 |
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 444018, (2020/06/12 05:52UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 20.12 136 27Bet Lib 15:17:00.3 -09:22:59 2.6 9.34 111 5 Lib 14:45:57.7 -15:27:34 6.5 0.50 117 PPM 229272 14:46:34.6 -15:04:23 9.1 0.11 117 444018 14:46:21.3 -14:58:20 15.7 117 Positions are for J2000
Event circumstances last updated at 2018/06/25 21:39:35 UT
Marc W. Buie, Southwest Research Institute