Event between 08KV42 and star UC4-644-054242 with event index number of 56720
Geocentric closest approach at 2017/03/12 10:02:54 UTC
J2000 position of star is 16:47:52.7 +38:38:07
Equinox of date position of star is 16:48:26.1 +38:36:27
Stellar brightness R=15.3
Star is 80 degrees from the moon.
Moon is 100% illuminated.
TNO apparent brightness V=23.3
[RECON map]
TNO is 27.1 AU from the Sun
and 26.9 AU from the Earth.
The TNO is moving 32.7
km/sec on the sky relative to the star, or,
6.0 arcsec/hr.
The 1-sigma error in the time of the event is 438 seconds.
The 1-sigma cross-track error in the shadow position is
1429 km.
The TNO has an absolute magnitude Hv=8.8
Diameter=104.7 km assuming a 5% albedo -- 3.2 sec chord
Diameter=42.8 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
Star training set for 08KV42, (2017/03/12 10:03UT) Object RA Dec mag sep mel Vega 18:37:31.3 +38:48:02 0.0 21.20 101 23Bet Dra 17:30:49.3 +52:17:21 2.8 15.53 87 44Eta Her 16:43:29.2 +38:53:26 3.5 1.01 79 PPM 079652 16:48:13.9 +37:31:51 7.3 1.08 79 PPM 079685 16:50:25.5 +38:33:31 9.2 0.39 80 PPM 079668 16:49:33.7 +38:47:29 10.1 0.28 80 08KV42 16:48:28.1 +38:36:21 15.3 80 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 16.8 km
RECON observability=1.0 and success probability=0.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 10:04:12 | -37.9 | Dark | Up | 53.1 | 86.9 | Up | 09:27:13 - 10:41:12 | -7495 |
| Tonasket | 10:04:11 | -38.1 | Dark | Up | 53.1 | 86.6 | Up | 09:27:12 - 10:41:11 | -7513 |
| Okanogan | 10:04:11 | -38.4 | Dark | Up | 53.0 | 86.0 | Up | 09:27:12 - 10:41:11 | -7545 |
| Brewster | 10:04:11 | -38.7 | Dark | Up | 52.8 | 85.5 | Up | 09:27:11 - 10:41:10 | -7574 |
| Manson/Chelan | 10:04:11 | -39.0 | Dark | Up | 52.6 | 85.0 | Up | 09:27:11 - 10:41:10 | -7606 |
| Entiat | 10:04:10 | -39.2 | Dark | Up | 52.5 | 84.7 | Up | 09:27:11 - 10:41:10 | -7625 |
| Wenatchee | 10:04:08 | -39.5 | Dark | Up | 52.4 | 84.3 | Up | 09:27:09 - 10:41:08 | -7649 |
| Ellensburg | 10:04:09 | -39.9 | Dark | Up | 52.2 | 83.6 | Up | 09:27:09 - 10:41:08 | -7690 |
| Yakima | 10:04:08 | -40.2 | Dark | Up | 52.1 | 83.1 | Up | 09:27:08 - 10:41:07 | -7722 |
| Toppenish/White Swan | 10:04:07 | -40.3 | Dark | Up | 52.2 | 82.9 | Up | 09:27:08 - 10:41:07 | -7731 |
| Pasco | 10:04:05 | -39.9 | Dark | Up | 53.1 | 83.5 | Up | 09:27:06 - 10:41:05 | -7686 |
| PNWRO | 10:04:04 | -40.0 | Dark | Up | 53.2 | 83.3 | Up | 09:27:04 - 10:41:03 | -7694 |
| George/Umatilla | 10:04:04 | -40.2 | Dark | Up | 52.9 | 82.9 | Up | 09:27:04 - 10:41:03 | -7720 |
| Goldendale | 10:04:06 | -40.9 | Dark | Up | 51.9 | 81.9 | Up | 09:27:07 - 10:41:06 | -7791 |
| The Dalles | 10:04:06 | -41.3 | Dark | Up | 51.6 | 81.4 | Up | 09:27:07 - 10:41:06 | -7823 |
| Maupin | 10:04:04 | -41.6 | Dark | Up | 51.6 | 81.0 | Up | 09:27:05 - 10:41:04 | -7851 |
| Madras/Culver | 10:04:04 | -42.0 | Dark | Up | 51.5 | 80.3 | Up | 09:27:04 - 10:41:03 | -7894 |
| Sisters | 10:04:03 | -42.5 | Dark | Up | 51.1 | 79.6 | Up | 09:27:04 - 10:41:03 | -7938 |
| Redmond | 10:04:03 | -42.3 | Dark | Up | 51.4 | 79.8 | Up | 09:27:04 - 10:41:03 | -7923 |
| Bend | 10:04:03 | -42.5 | Dark | Up | 51.2 | 79.5 | Up | 09:27:03 - 10:41:02 | -7945 |
| Oregon Observatory | 10:04:02 | -42.7 | Dark | Up | 51.1 | 79.2 | Up | 09:27:03 - 10:41:02 | -7963 |
| LaPine/Gilchrist | 10:04:02 | -42.9 | Dark | Up | 51.0 | 78.9 | Up | 09:27:02 - 10:41:01 | -7981 |
| North Lake | 10:03:59 | -43.0 | Dark | Up | 51.3 | 78.7 | Up | 09:26:59 - 10:40:58 | -7987 |
| Paisley | 10:03:58 | -43.3 | Dark | Up | 51.5 | 78.2 | Up | 09:26:58 - 10:40:57 | -8011 |
| Chiloquin | 10:04:00 | -44.0 | Dark | Up | 50.5 | 77.4 | Up | 09:27:00 - 10:40:59 | -8078 |
| Klamath Falls | 10:03:58 | -44.2 | Dark | Up | 50.5 | 77.0 | Up | 09:26:58 - 10:40:57 | -8100 |
| Lakeview | 10:03:57 | -43.6 | Dark | Up | 51.5 | 77.6 | Up | 09:26:57 - 10:40:56 | -8039 |
| Tulelake | 10:03:57 | -44.3 | Dark | Up | 50.7 | 76.8 | Up | 09:26:58 - 10:40:57 | -8106 |
| Cedarville | 10:03:54 | -44.0 | Dark | Up | 51.5 | 76.9 | Up | 09:26:55 - 10:40:54 | -8078 |
| Fall River/Burney | 10:03:55 | -44.9 | Dark | Up | 50.5 | 75.8 | Up | 09:26:56 - 10:40:55 | -8168 |
| Susanville | 10:03:52 | -45.0 | Dark | Up | 50.9 | 75.4 | Up | 09:26:53 - 10:40:52 | -8179 |
| Greenville | 10:03:52 | -45.4 | Dark | Up | 50.6 | 74.9 | Up | 09:26:53 - 10:40:52 | -8212 |
| Niwot | 10:03:31 | -36.3 | Dark | Up | 62.3 | 81.3 | Up | 09:26:31 - 10:40:30 | -7347 |
| Quincy | 10:03:51 | -45.6 | Dark | Up | 50.5 | 74.7 | Up | 09:26:51 - 10:40:50 | -8226 |
| Portola | 10:03:49 | -45.4 | Dark | Up | 50.8 | 74.7 | Up | 09:26:50 - 10:40:49 | -8213 |
| Reno | 10:03:48 | -45.3 | Dark | Up | 51.3 | 74.6 | Up | 09:26:49 - 10:40:48 | -8200 |
| Carson City | 10:03:48 | -45.5 | Dark | Up | 51.2 | 74.2 | Up | 09:26:49 - 10:40:48 | -8224 |
| Yerington | 10:03:47 | -45.3 | Dark | Up | 51.6 | 74.2 | Up | 09:26:47 - 10:40:46 | -8206 |
| Gardnerville | 10:03:47 | -45.7 | Dark | Up | 51.1 | 73.9 | Up | 09:26:48 - 10:40:47 | -8238 |
| Hawthorne | 10:03:45 | -45.4 | Dark | Up | 51.9 | 73.8 | Up | 09:26:46 - 10:40:45 | -8211 |
| Lee Vining | 10:03:44 | -46.0 | Dark | Up | 51.3 | 73.0 | Up | 09:26:45 - 10:40:44 | -8274 |
| Tonopah | 10:03:42 | -44.9 | Dark | Up | 52.8 | 73.7 | Up | 09:26:42 - 10:40:41 | -8171 |
| Bishop | 10:03:40 | -46.1 | Dark | Up | 51.7 | 72.5 | Up | 09:26:41 - 10:40:40 | -8276 |
| Lone Pine | 10:03:39 | -46.4 | Dark | Up | 51.7 | 71.7 | Up | 09:26:39 - 10:40:38 | -8308 |
| Beatty | 10:03:38 | -45.4 | Dark | Up | 52.8 | 72.4 | Up | 09:26:38 - 10:40:37 | -8221 |
| Indian Springs | 10:03:35 | -45.0 | Dark | Up | 53.5 | 72.3 | Up | 09:26:36 - 10:40:35 | -8183 |
| Henderson | 10:03:33 | -44.9 | Dark | Up | 53.9 | 71.8 | Up | 09:26:33 - 10:40:32 | -8178 |
| Searchlight/Boulder City | 10:03:31 | -45.2 | Dark | Up | 53.7 | 71.0 | Up | 09:26:32 - 10:40:31 | -8210 |
| CPSLO | 10:03:40 | -48.8 | Dark | Up | 49.3 | 69.5 | Up | 09:26:40 - 10:40:39 | -8523 |
| Kingman/Dolan Springs | 10:03:29 | -44.8 | Dark | Up | 54.3 | 70.9 | Up | 09:26:29 - 10:40:28 | -8177 |
| Laughlin/Bullhead City | 10:03:30 | -45.2 | Dark | Up | 53.9 | 70.7 | Up | 09:26:30 - 10:40:29 | -8208 |
| DCO | 10:03:27 | -44.3 | Dark | Up | 54.9 | 70.9 | Up | 09:26:28 - 10:40:27 | -8130 |
| Mohave Valley | 10:03:29 | -45.4 | Dark | Up | 53.8 | 70.4 | Up | 09:26:29 - 10:40:28 | -8224 |
| Lake Havasu City | 10:03:27 | -45.4 | Dark | Up | 53.8 | 69.9 | Up | 09:26:28 - 10:40:27 | -8233 |
| Parker | 10:03:26 | -45.6 | Dark | Up | 53.7 | 69.5 | Up | 09:26:27 - 10:40:26 | -8252 |
| Idyllwild | 10:03:29 | -47.5 | Dark | Up | 51.7 | 68.5 | Up | 09:26:29 - 10:40:28 | -8415 |
| Blythe | 10:03:25 | -46.2 | Dark | Up | 53.3 | 68.7 | Up | 09:26:26 - 10:40:25 | -8301 |
| Calipatria | 10:03:25 | -47.1 | Dark | Up | 52.4 | 68.0 | Up | 09:26:26 - 10:40:25 | -8383 |
| Yuma | 10:03:24 | -46.7 | Dark | Up | 52.9 | 67.6 | Up | 09:26:24 - 10:40:23 | -8357 |
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.
Event circumstances last updated at 2016/03/15 17:40:49 UT
Marc W. Buie, Southwest Research Institute