Event between 07NC7 and star UC4-434-118238 with event index number of 79075
Geocentric closest approach at 2017/08/20 09:25:48 UTC
J2000 position of star is 23:05:33.4 -03:13:53
Equinox of date position of star is 23:06:24.9 -03:08:28
Stellar brightness R=14.8
Star is 143 degrees from the moon.
Moon is 3% illuminated.
TNO apparent brightness V=22.4
[RECON map]
TNO is 26.5 AU from the Sun
and 25.6 AU from the Earth.
The TNO is moving 22.4
km/sec on the sky relative to the star, or,
4.3 arcsec/hr.
The 1-sigma error in the time of the event is 214 seconds.
The 1-sigma cross-track error in the shadow position is
3427 km.
The sky-plane scale is
18534.9 km/arcsec.
The TNO has an absolute magnitude Hv=8.1
Diameter=142.6 km assuming a 5% albedo -- 6.1 sec chord
Diameter=58.2 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is CENTAURR
Star training set for 07NC7, (2017/08/20 09:26UT) Object RA Dec mag sep mel Fomalhaut 22:58:37.3 -29:31:42 1.2 26.46 147 Markab 23:05:38.4 +15:18:02 2.5 18.44 133 PPM 207049 23:02:26.5 -04:36:59 6.1 1.79 145 PPM 207210 23:09:58.7 -02:21:25 8.0 1.17 142 PPM 207145 23:06:45.9 -02:59:20 9.7 0.17 143 07NC7 23:06:27.9 -03:08:09 14.8 143 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
4.2 sigma about the mid-time.
The median site spacing is 18.7 km
RECON observability=1.0 and success probability=10.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 09:24:19 | -26.0 | Dark | Down | 37.7 | 185.2 | Up | 09:09:19 - 09:39:19 | 3278 |
| Tonasket | 09:24:19 | -26.3 | Dark | Down | 37.9 | 185.3 | Up | 09:09:19 - 09:39:19 | 3262 |
| Okanogan | 09:24:19 | -26.6 | Dark | Down | 38.3 | 185.1 | Up | 09:09:19 - 09:39:19 | 3243 |
| Brewster | 09:24:20 | -26.9 | Dark | Down | 38.6 | 184.9 | Up | 09:09:20 - 09:39:20 | 3230 |
| Manson/Chelan | 09:24:22 | -27.2 | Dark | Down | 38.8 | 184.4 | Up | 09:09:22 - 09:39:22 | 3226 |
| Entiat | 09:24:22 | -27.4 | Dark | Down | 39.0 | 184.4 | Up | 09:09:22 - 09:39:22 | 3213 |
| Wenatchee | 09:24:22 | -27.7 | Dark | Down | 39.3 | 184.2 | Up | 09:09:22 - 09:39:22 | 3198 |
| Ellensburg | 09:24:23 | -28.1 | Dark | Down | 39.7 | 184.0 | Up | 09:09:23 - 09:39:23 | 3176 |
| Yakima | 09:24:24 | -28.5 | Dark | Down | 40.1 | 184.0 | Up | 09:09:24 - 09:39:24 | 3148 |
| Toppenish/White Swan | 09:24:23 | -28.7 | Dark | Down | 40.3 | 184.2 | Up | 09:09:23 - 09:39:23 | 3129 |
| Goldendale | 09:24:25 | -29.3 | Dark | Down | 40.9 | 183.7 | Up | 09:09:25 - 09:39:25 | 3102 |
| The Dalles | 09:24:26 | -29.6 | Dark | Down | 41.1 | 183.2 | Up | 09:09:26 - 09:39:26 | 3095 |
| Pasco | 09:24:20 | -28.4 | Dark | Down | 40.4 | 185.9 | Up | 09:09:20 - 09:39:20 | 3086 |
| George/Umatilla | 09:24:20 | -28.8 | Dark | Down | 40.7 | 185.6 | Up | 09:09:20 - 09:39:20 | 3068 |
| Maupin | 09:24:26 | -29.9 | Dark | Down | 41.5 | 183.4 | Up | 09:09:26 - 09:39:26 | 3063 |
| PNWRO | 09:24:19 | -28.6 | Dark | Down | 40.6 | 186.2 | Up | 09:09:19 - 09:39:19 | 3063 |
| Madras/Culver | 09:24:27 | -30.5 | Dark | Down | 42.1 | 183.4 | Up | 09:09:27 - 09:39:27 | 3026 |
| Sisters | 09:24:29 | -30.9 | Dark | Down | 42.4 | 182.8 | Up | 09:09:29 - 09:39:29 | 3015 |
| Redmond | 09:24:28 | -30.8 | Dark | Down | 42.4 | 183.3 | Up | 09:09:28 - 09:39:28 | 3002 |
| Bend | 09:24:28 | -31.0 | Dark | Down | 42.7 | 183.2 | Up | 09:09:28 - 09:39:28 | 2990 |
| Oregon Observatory | 09:24:29 | -31.2 | Dark | Down | 42.8 | 183.0 | Up | 09:09:29 - 09:39:29 | 2981 |
| La Pine/Gilchrist | 09:24:29 | -31.4 | Dark | Down | 43.0 | 182.9 | Up | 09:09:29 - 09:39:29 | 2968 |
| North Lake | 09:24:28 | -31.7 | Dark | Down | 43.5 | 183.8 | Up | 09:09:28 - 09:39:28 | 2920 |
| Chiloquin | 09:24:32 | -32.6 | Dark | Down | 44.2 | 182.5 | Up | 09:09:32 - 09:39:32 | 2897 |
| Klamath Falls | 09:24:32 | -32.9 | Dark | Down | 44.5 | 182.6 | Up | 09:09:32 - 09:39:32 | 2869 |
| Paisley | 09:24:27 | -32.1 | Dark | Down | 44.0 | 184.3 | Up | 09:09:27 - 09:39:27 | 2869 |
| Tulelake | 09:24:31 | -33.0 | Dark | Down | 44.8 | 183.1 | Up | 09:09:31 - 09:39:31 | 2841 |
| Lakeview | 09:24:27 | -32.5 | Dark | Down | 44.5 | 184.6 | Up | 09:09:27 - 09:39:27 | 2826 |
| Cedarville | 09:24:27 | -33.0 | Dark | Down | 45.1 | 184.9 | Up | 09:09:27 - 09:39:27 | 2771 |
| Fall River/Burney | 09:24:31 | -33.8 | Dark | Down | 45.7 | 183.2 | Up | 09:09:31 - 09:39:31 | 2770 |
| Susanville | 09:24:30 | -34.2 | Dark | Down | 46.3 | 184.3 | Up | 09:09:30 - 09:39:30 | 2700 |
| Greenville | 09:24:31 | -34.6 | Dark | Down | 46.6 | 183.9 | Up | 09:09:31 - 09:39:31 | 2687 |
| Quincy | 09:24:32 | -34.7 | Dark | Down | 46.8 | 183.9 | Up | 09:09:32 - 09:39:32 | 2672 |
| Portola | 09:24:30 | -34.7 | Dark | Down | 46.9 | 184.6 | Up | 09:09:30 - 09:39:30 | 2648 |
| Reno | 09:24:28 | -34.7 | Dark | Down | 47.1 | 185.6 | Up | 09:09:28 - 09:39:28 | 2608 |
| Carson City | 09:24:28 | -35.1 | Dark | Down | 47.4 | 185.7 | Up | 09:09:28 - 09:39:28 | 2579 |
| Gardnerville | 09:24:28 | -35.3 | Dark | Down | 47.7 | 185.8 | Up | 09:09:28 - 09:39:28 | 2559 |
| Yerington | 09:24:26 | -35.0 | Dark | Down | 47.6 | 186.6 | Up | 09:09:26 - 09:39:26 | 2545 |
| Hawthorne | 09:24:25 | -35.3 | Dark | Down | 48.0 | 187.5 | Up | 09:09:25 - 09:39:25 | 2492 |
| Lee Vining | 09:24:27 | -36.0 | Dark | Down | 48.6 | 186.8 | Up | 09:09:27 - 09:39:27 | 2462 |
| Tonopah | 09:24:20 | -35.2 | Dark | Down | 48.3 | 189.6 | Up | 09:09:20 - 09:39:20 | 2411 |
| Bishop | 09:24:25 | -36.2 | Dark | Down | 49.1 | 188.0 | Up | 09:09:25 - 09:39:25 | 2391 |
| Lone Pine | 09:24:25 | -36.8 | Dark | Down | 49.8 | 188.6 | Up | 09:09:25 - 09:39:25 | 2318 |
| Beatty | 09:24:20 | -36.0 | Dark | Down | 49.4 | 190.5 | Up | 09:09:20 - 09:39:20 | 2302 |
| CPSLO | 09:24:36 | -38.9 | Dark | Down | 51.4 | 184.8 | Up | 09:09:36 - 09:39:36 | 2291 |
| Indian Springs | 09:24:16 | -35.9 | Dark | Down | 49.5 | 192.2 | Up | 09:09:16 - 09:39:16 | 2242 |
| Niwot | 09:23:37 | -28.4 | Dark | Down | 43.5 | 205.6 | Up | 09:08:37 - 09:38:37 | 2221 |
| Henderson | 09:24:15 | -36.1 | Dark | Down | 49.9 | 193.4 | Up | 09:09:15 - 09:39:15 | 2175 |
| Searchlight/Boulder City | 09:24:15 | -36.6 | Dark | Down | 50.5 | 193.7 | Up | 09:09:15 - 09:39:15 | 2125 |
| Wildwood | 09:24:29 | -39.2 | Dark | Down | 52.4 | 188.3 | Up | 09:09:29 - 09:39:29 | 2125 |
| Laughlin/Bullhead City | 09:24:13 | -36.7 | Dark | Down | 50.7 | 194.3 | Up | 09:09:13 - 09:39:13 | 2088 |
| Patrick | 09:24:11 | -36.1 | Dark | Down | 50.3 | 195.3 | Up | 09:09:11 - 09:39:11 | 2087 |
| Kingman/Dolan Springs | 09:24:11 | -36.4 | Dark | Down | 50.6 | 195.1 | Up | 09:09:12 - 09:39:11 | 2074 |
| Mohave Valley | 09:24:13 | -36.9 | Dark | Down | 50.9 | 194.4 | Up | 09:09:13 - 09:39:13 | 2065 |
| DCO | 09:24:08 | -36.1 | Dark | Down | 50.4 | 196.4 | Up | 09:09:08 - 09:39:08 | 2039 |
| Idyllwild | 09:24:23 | -38.8 | Dark | Down | 52.5 | 191.4 | Up | 09:09:23 - 09:39:23 | 2034 |
| Lake Havasu City | 09:24:13 | -37.1 | Dark | Down | 51.3 | 194.9 | Up | 09:09:13 - 09:39:13 | 2022 |
| Parker | 09:24:13 | -37.4 | Dark | Down | 51.6 | 195.0 | Up | 09:09:13 - 09:39:13 | 1991 |
| Blythe | 09:24:15 | -38.0 | Dark | Down | 52.2 | 194.7 | Up | 09:09:15 - 09:39:15 | 1955 |
| Calipatria | 09:24:19 | -38.8 | Dark | Down | 52.8 | 193.4 | Up | 09:09:19 - 09:39:19 | 1942 |
| Yuma | 09:24:16 | -38.8 | Dark | Down | 53.1 | 195.0 | Up | 09:09:16 - 09:39:16 | 1876 |
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 07NC7, (2017/08/20 09:26UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.5 -29:37:23 1.2 26.46 147 Markab 23:04:45.7 +15:12:18 2.5 18.44 133 PPM 207049 23:01:31.8 -04:42:41 6.1 1.79 145 PPM 207210 23:09:04.2 -02:27:09 8.0 1.17 142 PPM 207145 23:05:51.4 -03:05:03 9.7 0.17 143 07NC7 23:05:33.4 -03:13:53 14.8 143 Positions are for J2000
Event circumstances last updated at 2016/09/02 18:15:21 UT
Marc W. Buie, Southwest Research Institute