Event between 04HN79 and star UC4-347-071136 with event index number of 107932
Geocentric closest approach at 2017/04/22 06:14:50 UTC
J2000 position of star is 15:02:27.0 -20:38:38
Equinox of date position of star is 15:03:26.5 -20:42:40
Stellar brightness R=14.9,
use SENSEUP=128
Star is 107 degrees from the moon.
Moon is 23% illuminated.
TNO apparent brightness V=22.6
[RECON map]
TNO is 35.8 AU from the Sun
and 34.8 AU from the Earth.
The TNO is moving 22.9
km/sec on the sky relative to the star, or,
3.3 arcsec/hr.
The 1-sigma error in the time of the event is 225 seconds.
The 1-sigma cross-track error in the shadow position is
4886 km.
The sky-plane scale is
25248.9 km/arcsec.
The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 10.0 sec chord
Diameter=93.5 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is SCATNEAR
Star training set for 04HN79, (2017/04/22 06:15UT) Object RA Dec mag sep mel Antares 16:30:28.3 -26:28:08 0.9 20.72 86 27Bet Lib 15:17:56.4 -09:26:45 2.6 11.79 106 PPM 229408 14:52:49.8 -18:25:32 6.2 3.39 110 PPM 263825 15:08:17.0 -20:17:19 8.4 1.21 106 PPM 263685 15:02:41.8 -20:48:31 9.6 0.20 107 04HN79 15:03:26.5 -20:42:40 14.9 106 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
4.0 sigma about the mid-time.
The median site spacing is 12.1 km
RECON observability=0.4 and success probability=4.7%
Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
Oroville | 06:17:37 | -25.0 | Dark | Down | 11.8 | 142.0 | Really Low | 06:02:37 - 06:32:37 | 2561 |
Tonasket | 06:17:37 | -25.2 | Dark | Down | 12.0 | 141.9 | Really Low | 06:02:37 - 06:32:37 | 2548 |
Okanogan | 06:17:38 | -25.5 | Dark | Down | 12.2 | 141.8 | Really Low | 06:02:38 - 06:32:38 | 2525 |
Brewster | 06:17:39 | -25.7 | Dark | Down | 12.3 | 141.6 | Really Low | 06:02:39 - 06:32:39 | 2504 |
Manson/Chelan | 06:17:40 | -25.7 | Dark | Down | 12.3 | 141.2 | Really Low | 06:02:40 - 06:32:40 | 2481 |
Entiat | 06:17:41 | -25.9 | Dark | Down | 12.5 | 141.1 | Really Low | 06:02:41 - 06:32:41 | 2466 |
Niwot | 06:17:10 | -36.7 | Dark | Down | 24.6 | 153.2 | Low | 06:02:10 - 06:32:10 | 2451 |
Wenatchee | 06:17:41 | -26.1 | Dark | Down | 12.6 | 141.0 | Really Low | 06:02:41 - 06:32:41 | 2449 |
Ellensburg | 06:17:43 | -26.4 | Dark | Down | 12.8 | 140.8 | Really Low | 06:02:43 - 06:32:43 | 2418 |
Pasco | 06:17:41 | -27.5 | Dark | Down | 14.0 | 141.9 | Really Low | 06:02:41 - 06:32:41 | 2415 |
PNWRO | 06:17:41 | -27.8 | Dark | Down | 14.3 | 142.0 | Really Low | 06:02:41 - 06:32:41 | 2407 |
Yakima | 06:17:44 | -26.8 | Dark | Down | 13.1 | 140.7 | Really Low | 06:02:44 - 06:32:44 | 2393 |
George/Umatilla | 06:17:42 | -27.8 | Dark | Down | 14.2 | 141.6 | Really Low | 06:02:42 - 06:32:42 | 2389 |
Toppenish/White Swan | 06:17:44 | -27.0 | Dark | Down | 13.4 | 140.8 | Really Low | 06:02:44 - 06:32:44 | 2385 |
Goldendale | 06:17:45 | -27.4 | Dark | Down | 13.6 | 140.4 | Really Low | 06:02:45 - 06:32:45 | 2339 |
The Dalles | 06:17:47 | -27.4 | Dark | Down | 13.6 | 140.0 | Really Low | 06:02:47 - 06:32:47 | 2314 |
Maupin | 06:17:47 | -27.8 | Dark | Down | 14.0 | 140.0 | Really Low | 06:02:47 - 06:32:47 | 2292 |
Madras/Culver | 06:17:49 | -28.3 | Dark | Down | 14.4 | 139.9 | Really Low | 06:02:49 - 06:32:49 | 2257 |
Redmond | 06:17:49 | -28.6 | Dark | Down | 14.7 | 139.8 | Really Low | 06:02:49 - 06:32:49 | 2233 |
Sisters | 06:17:50 | -28.4 | Dark | Down | 14.5 | 139.5 | Really Low | 06:02:50 - 06:32:50 | 2222 |
Bend | 06:17:50 | -28.7 | Dark | Down | 14.8 | 139.7 | Really Low | 06:02:50 - 06:32:50 | 2215 |
Oregon Observatory | 06:17:50 | -28.8 | Dark | Down | 14.8 | 139.5 | Really Low | 06:02:50 - 06:32:50 | 2200 |
La Pine/Gilchrist | 06:17:50 | -29.0 | Dark | Down | 15.0 | 139.4 | Really Low | 06:02:50 - 06:32:50 | 2185 |
North Lake | 06:17:50 | -29.6 | Dark | Down | 15.6 | 139.9 | Really Low | 06:02:50 - 06:32:50 | 2176 |
Paisley | 06:17:49 | -30.2 | Dark | Down | 16.2 | 140.1 | Really Low | 06:02:49 - 06:32:49 | 2151 |
Lakeview | 06:17:50 | -30.7 | Dark | Down | 16.7 | 140.1 | Really Low | 06:02:50 - 06:32:50 | 2124 |
Chiloquin | 06:17:53 | -29.8 | Dark | Down | 15.6 | 139.0 | Really Low | 06:02:53 - 06:32:53 | 2101 |
Cedarville | 06:17:51 | -31.3 | Dark | Down | 17.2 | 140.2 | Really Low | 06:02:51 - 06:32:51 | 2086 |
Klamath Falls | 06:17:54 | -30.1 | Dark | Down | 15.9 | 139.0 | Really Low | 06:02:54 - 06:32:54 | 2081 |
Tulelake | 06:17:53 | -30.5 | Dark | Down | 16.3 | 139.2 | Really Low | 06:02:53 - 06:32:53 | 2073 |
Fall River/Burney | 06:17:54 | -31.3 | Dark | Down | 17.0 | 139.1 | Really Low | 06:02:54 - 06:32:54 | 2014 |
Susanville | 06:17:54 | -32.1 | Dark | Down | 17.9 | 139.5 | Really Low | 06:02:54 - 06:32:54 | 1995 |
Gimple | 06:17:54 | -32.3 | Dark | Down | 18.0 | 139.3 | Really Low | 06:02:54 - 06:32:54 | 1969 |
Greenville | 06:17:55 | -32.3 | Dark | Down | 17.9 | 139.2 | Really Low | 06:02:55 - 06:32:55 | 1966 |
Reno | 06:17:52 | -33.2 | Dark | Down | 18.9 | 140.1 | Really Low | 06:02:52 - 06:32:52 | 1963 |
Portola | 06:17:54 | -32.7 | Dark | Down | 18.4 | 139.6 | Really Low | 06:02:54 - 06:32:54 | 1960 |
Quincy | 06:17:55 | -32.4 | Dark | Down | 18.1 | 139.2 | Really Low | 06:02:55 - 06:32:55 | 1952 |
Yerington | 06:17:52 | -33.9 | Dark | Down | 19.7 | 140.5 | Really Low | 06:02:52 - 06:32:52 | 1946 |
Tonopah | 06:17:48 | -35.5 | Dark | Down | 21.4 | 141.9 | Low | 06:02:48 - 06:32:48 | 1945 |
Carson City | 06:17:53 | -33.5 | Dark | Down | 19.2 | 140.0 | Really Low | 06:02:53 - 06:32:53 | 1938 |
Hawthorne | 06:17:51 | -34.5 | Dark | Down | 20.3 | 140.8 | Low | 06:02:51 - 06:32:51 | 1931 |
Gardnerville | 06:17:53 | -33.8 | Dark | Down | 19.4 | 140.0 | Really Low | 06:02:53 - 06:32:53 | 1923 |
Indian Springs | 06:17:45 | -37.3 | Dark | Down | 23.3 | 142.9 | Low | 06:02:45 - 06:32:45 | 1890 |
Beatty | 06:17:48 | -36.7 | Dark | Down | 22.5 | 142.0 | Low | 06:02:48 - 06:32:48 | 1877 |
Lee Vining | 06:17:52 | -34.9 | Dark | Down | 20.5 | 140.3 | Low | 06:02:52 - 06:32:52 | 1875 |
Henderson | 06:17:44 | -38.1 | Dark | Down | 24.0 | 143.3 | Low | 06:02:44 - 06:32:44 | 1875 |
DCO | 06:17:39 | -39.5 | Dark | Down | 25.7 | 144.7 | Low | 06:02:39 - 06:32:39 | 1868 |
Patrick | 06:17:41 | -39.0 | Dark | Down | 25.1 | 144.1 | Low | 06:02:41 - 06:32:41 | 1867 |
Bishop | 06:17:52 | -35.7 | Dark | Down | 21.3 | 140.7 | Low | 06:02:52 - 06:32:52 | 1856 |
Kingman/Dolan Springs | 06:17:42 | -39.2 | Dark | Down | 25.2 | 143.9 | Low | 06:02:42 - 06:32:42 | 1845 |
Searchlight/Boulder City | 06:17:45 | -38.6 | Dark | Down | 24.5 | 143.2 | Low | 06:02:45 - 06:32:45 | 1836 |
Laughlin/Bullhead City | 06:17:44 | -39.0 | Dark | Down | 24.9 | 143.4 | Low | 06:02:44 - 06:32:44 | 1825 |
Lone Pine | 06:17:52 | -36.5 | Dark | Down | 22.1 | 140.8 | Low | 06:02:52 - 06:32:52 | 1813 |
Mohave Valley | 06:17:44 | -39.2 | Dark | Down | 25.2 | 143.4 | Low | 06:02:44 - 06:32:44 | 1805 |
Lake Havasu City | 06:17:44 | -39.7 | Dark | Down | 25.6 | 143.5 | Low | 06:02:44 - 06:32:44 | 1785 |
Parker | 06:17:44 | -40.0 | Dark | Down | 25.9 | 143.4 | Low | 06:02:44 - 06:32:44 | 1760 |
Blythe | 06:17:45 | -40.4 | Dark | Down | 26.2 | 143.0 | Low | 06:02:45 - 06:32:45 | 1711 |
Idyllwild | 06:17:51 | -39.5 | Dark | Down | 25.0 | 141.2 | Low | 06:02:51 - 06:32:51 | 1648 |
Calipatria | 06:17:48 | -40.5 | Dark | Down | 26.1 | 142.0 | Low | 06:02:48 - 06:32:48 | 1642 |
Yuma | 06:17:46 | -41.2 | Dark | Down | 26.9 | 142.7 | Low | 06:02:46 - 06:32:46 | 1640 |
CPSLO | 06:18:00 | -36.5 | Dark | Down | 21.7 | 138.4 | Low | 06:03:00 - 06:33:00 | 1628 |
Wildwood | 06:17:56 | -38.4 | Dark | Down | 23.7 | 139.7 | Low | 06:02:56 - 06:32:56 | 1609 |
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 04HN79, (2017/04/22 06:15UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:55 0.9 20.72 86 27Bet Lib 15:17:00.3 -09:22:59 2.6 11.79 106 PPM 229408 14:51:51.3 -18:21:19 6.2 3.39 110 PPM 263825 15:07:17.5 -20:13:22 8.4 1.21 106 PPM 263685 15:01:42.3 -20:44:29 9.6 0.20 107 04HN79 15:02:27.0 -20:38:38 14.9 107 Positions are for J2000
Event circumstances last updated at 2017/04/24 16:03:02 UT
Marc W. Buie, Southwest Research Institute