Event between 14WP509 and star UC4-589-035602 with event index number of 141245
Geocentric closest approach at 2017/12/21 07:27:56 UTC
J2000 position of star is 06:49:11.8 +27:45:24
Equinox of date position of star is 06:50:19.2 +27:44:07
Stellar brightness R=15.9,
use SENSEUP=128
Star is 158 degrees from the moon.
Moon is 8% illuminated.
TNO apparent brightness V=21.1
[RECON map]
TNO is 42.5 AU from the Sun
and 41.6 AU from the Earth.
The TNO is moving 25.1
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 480 seconds.
The 1-sigma cross-track error in the shadow position is
5510 km.
The sky-plane scale is
30161.3 km/arcsec.
The TNO has an absolute magnitude Hv=4.8
Diameter=648.7 km assuming a 5% albedo -- 25.9 sec chord
Diameter=264.8 km assuming a 30% albedo -- 10.6 sec chord
Dynamical classification is CLASSICAL
Star training set for 14WP509, (2017/12/21 07:28UT) Object RA Dec mag sep mel Pollux 07:46:24.8 +27:58:53 1.1 12.39 168 Alhena 06:38:45.0 +16:22:57 1.9 11.66 156 28 Gem 06:45:53.8 +28:57:04 5.4 1.56 156 PPM 096583 06:50:17.6 +27:10:07 6.6 0.57 158 PPM 096585 06:50:23.3 +27:52:02 10.6 0.13 158 14WP509 06:50:19.4 +27:44:07 15.9 158 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
1.9 sigma about the mid-time.
The median site spacing is 24.3 km
RECON observability=1.0 and success probability=6.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 07:29:05 | -64.0 | Dark | Down | 64.1 | 137.7 | Up | 07:14:05 - 07:44:05 | -5501 |
| Tonasket | 07:29:04 | -64.2 | Dark | Down | 64.3 | 137.4 | Up | 07:14:04 - 07:44:04 | -5525 |
| Okanogan | 07:29:05 | -64.5 | Dark | Down | 64.4 | 136.7 | Up | 07:14:05 - 07:44:05 | -5560 |
| Brewster | 07:29:05 | -64.7 | Dark | Down | 64.5 | 135.9 | Up | 07:14:05 - 07:44:05 | -5588 |
| Manson/Chelan | 07:29:07 | -64.9 | Dark | Down | 64.5 | 135.0 | Up | 07:14:07 - 07:44:07 | -5609 |
| Entiat | 07:29:07 | -65.0 | Dark | Down | 64.6 | 134.5 | Up | 07:14:07 - 07:44:07 | -5631 |
| Wenatchee | 07:29:07 | -65.3 | Dark | Down | 64.8 | 134.0 | Up | 07:14:07 - 07:44:07 | -5658 |
| Ellensburg | 07:29:08 | -65.6 | Dark | Down | 64.9 | 133.0 | Up | 07:14:08 - 07:44:08 | -5701 |
| Yakima | 07:29:09 | -66.0 | Dark | Down | 65.2 | 132.3 | Up | 07:14:09 - 07:44:09 | -5744 |
| Toppenish/White Swan | 07:29:08 | -66.2 | Dark | Down | 65.4 | 132.2 | Up | 07:14:08 - 07:44:08 | -5767 |
| Pasco | 07:29:05 | -66.6 | Dark | Down | 66.2 | 134.3 | Up | 07:14:05 - 07:44:05 | -5783 |
| PNWRO | 07:29:04 | -66.9 | Dark | Down | 66.4 | 134.3 | Up | 07:14:04 - 07:44:04 | -5810 |
| George/Umatilla | 07:29:06 | -66.9 | Dark | Down | 66.3 | 133.3 | Up | 07:14:06 - 07:44:06 | -5818 |
| Goldendale | 07:29:10 | -66.7 | Dark | Down | 65.6 | 130.6 | Up | 07:14:10 - 07:44:10 | -5824 |
| The Dalles | 07:29:11 | -66.8 | Dark | Down | 65.5 | 129.6 | Up | 07:14:11 - 07:44:11 | -5847 |
| Maupin | 07:29:11 | -67.2 | Dark | Down | 65.9 | 129.1 | Up | 07:14:11 - 07:44:11 | -5891 |
| Madras/Culver | 07:29:12 | -67.7 | Dark | Down | 66.2 | 128.0 | Up | 07:14:12 - 07:44:12 | -5950 |
| Sisters | 07:29:13 | -67.9 | Dark | Down | 66.1 | 126.7 | Up | 07:14:13 - 07:44:13 | -5983 |
| Redmond | 07:29:11 | -68.1 | Dark | Down | 66.4 | 127.3 | Up | 07:14:11 - 07:44:11 | -5987 |
| Bend | 07:29:12 | -68.2 | Dark | Down | 66.4 | 126.7 | Up | 07:14:12 - 07:44:12 | -6010 |
| Oregon Observatory | 07:29:13 | -68.3 | Dark | Down | 66.5 | 126.1 | Up | 07:14:13 - 07:44:13 | -6028 |
| La Pine/Gilchrist | 07:29:13 | -68.5 | Dark | Down | 66.5 | 125.7 | Up | 07:14:13 - 07:44:13 | -6050 |
| North Lake | 07:29:12 | -69.1 | Dark | Down | 67.1 | 125.8 | Up | 07:14:12 - 07:44:12 | -6099 |
| Paisley | 07:29:10 | -69.7 | Dark | Down | 67.7 | 125.4 | Up | 07:14:10 - 07:44:10 | -6159 |
| Chiloquin | 07:29:15 | -69.4 | Dark | Down | 67.0 | 123.0 | Up | 07:14:15 - 07:44:15 | -6167 |
| Klamath Falls | 07:29:15 | -69.8 | Dark | Down | 67.2 | 122.4 | Up | 07:14:15 - 07:44:15 | -6205 |
| Lakeview | 07:29:11 | -70.2 | Dark | Down | 68.1 | 124.7 | Up | 07:14:11 - 07:44:11 | -6214 |
| Tulelake | 07:29:13 | -70.1 | Dark | Down | 67.5 | 122.3 | Up | 07:14:13 - 07:44:13 | -6235 |
| Cedarville | 07:29:10 | -70.9 | Dark | Down | 68.6 | 123.6 | Up | 07:14:10 - 07:44:10 | -6286 |
| Fall River/Burney | 07:29:14 | -71.0 | Dark | Down | 68.1 | 120.6 | Up | 07:14:14 - 07:44:14 | -6334 |
| Susanville | 07:29:13 | -71.8 | Dark | Down | 68.9 | 120.4 | Up | 07:14:13 - 07:44:13 | -6405 |
| Niwot | 07:28:22 | -72.2 | Dark | Down | 76.9 | 158.8 | Up | 07:13:22 - 07:43:22 | -6413 |
| Greenville | 07:29:13 | -71.9 | Dark | Down | 68.8 | 119.3 | Up | 07:14:13 - 07:44:13 | -6434 |
| Gimple | 07:29:13 | -72.0 | Dark | Down | 68.9 | 119.4 | Up | 07:14:13 - 07:44:13 | -6434 |
| Quincy | 07:29:13 | -72.1 | Dark | Down | 68.9 | 118.8 | Up | 07:14:13 - 07:44:13 | -6456 |
| Portola | 07:29:11 | -72.4 | Dark | Down | 69.3 | 119.3 | Up | 07:14:11 - 07:44:11 | -6471 |
| Reno | 07:29:09 | -72.8 | Dark | Down | 69.8 | 119.8 | Up | 07:14:09 - 07:44:09 | -6502 |
| Carson City | 07:29:10 | -73.2 | Dark | Down | 70.0 | 118.9 | Up | 07:14:10 - 07:44:10 | -6542 |
| Yerington | 07:29:08 | -73.5 | Dark | Down | 70.5 | 119.5 | Up | 07:14:08 - 07:44:08 | -6565 |
| Gardnerville | 07:29:09 | -73.4 | Dark | Down | 70.2 | 118.4 | Up | 07:14:09 - 07:44:09 | -6569 |
| Hawthorne | 07:29:06 | -74.1 | Dark | Down | 71.1 | 119.3 | Up | 07:14:06 - 07:44:06 | -6617 |
| Tonopah | 07:29:02 | -74.9 | Dark | Down | 72.3 | 120.6 | Up | 07:14:02 - 07:44:02 | -6671 |
| Lee Vining | 07:29:09 | -74.5 | Dark | Down | 71.1 | 117.0 | Up | 07:14:09 - 07:44:09 | -6678 |
| Bishop | 07:29:06 | -75.3 | Dark | Down | 71.8 | 116.6 | Up | 07:14:06 - 07:44:06 | -6745 |
| Beatty | 07:29:01 | -76.1 | Dark | Down | 73.2 | 118.2 | Up | 07:14:01 - 07:44:01 | -6798 |
| Lone Pine | 07:29:05 | -76.1 | Dark | Down | 72.4 | 115.0 | Up | 07:14:05 - 07:44:05 | -6829 |
| Indian Springs | 07:28:57 | -76.6 | Dark | Down | 74.1 | 119.2 | Up | 07:13:57 - 07:43:57 | -6835 |
| Henderson | 07:28:54 | -77.2 | Dark | Down | 74.8 | 118.9 | Up | 07:13:54 - 07:43:54 | -6894 |
| Searchlight/Boulder City | 07:28:55 | -77.8 | Dark | Down | 75.2 | 117.1 | Up | 07:13:55 - 07:43:55 | -6957 |
| Patrick | 07:28:51 | -78.0 | Dark | Down | 75.9 | 119.1 | Up | 07:13:51 - 07:43:51 | -6962 |
| CPSLO | 07:29:14 | -76.3 | Dark | Down | 70.9 | 107.6 | Up | 07:14:14 - 07:44:14 | -6964 |
| Kingman/Dolan Springs | 07:28:52 | -78.2 | Dark | Down | 75.9 | 117.9 | Up | 07:13:52 - 07:43:52 | -6987 |
| Laughlin/Bullhead City | 07:28:53 | -78.2 | Dark | Down | 75.5 | 116.8 | Up | 07:13:53 - 07:43:53 | -6989 |
| DCO | 07:28:48 | -78.3 | Dark | Down | 76.6 | 119.6 | Up | 07:13:48 - 07:43:48 | -6995 |
| Mohave Valley | 07:28:54 | -78.4 | Dark | Down | 75.7 | 115.9 | Up | 07:13:54 - 07:43:54 | -7020 |
| Lake Havasu City | 07:28:53 | -78.9 | Dark | Down | 76.0 | 114.9 | Up | 07:13:53 - 07:43:53 | -7064 |
| Parker | 07:28:53 | -79.2 | Dark | Down | 76.2 | 113.7 | Up | 07:13:53 - 07:43:53 | -7102 |
| Wildwood | 07:29:07 | -78.2 | Dark | Down | 72.9 | 106.7 | Up | 07:14:07 - 07:44:07 | -7104 |
| Idyllwild | 07:29:02 | -79.1 | Dark | Down | 74.5 | 108.2 | Up | 07:14:02 - 07:44:02 | -7147 |
| Blythe | 07:28:54 | -79.7 | Dark | Down | 76.2 | 111.2 | Up | 07:13:54 - 07:43:54 | -7161 |
| Calipatria | 07:28:57 | -80.0 | Dark | Down | 75.6 | 107.8 | Up | 07:13:57 - 07:43:57 | -7215 |
| Yuma | 07:28:54 | -80.6 | Dark | Down | 76.4 | 107.5 | Up | 07:13:54 - 07:43:54 | -7263 |
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 14WP509, (2017/12/21 07:28UT) Object RA Dec mag sep mel Pollux 07:45:18.1 +28:01:33 1.1 12.39 168 Alhena 06:37:42.8 +16:23:57 1.9 11.66 156 28 Gem 06:44:45.5 +28:58:15 5.4 1.56 156 PPM 096583 06:49:10.3 +27:11:25 6.6 0.57 158 PPM 096585 06:49:15.6 +27:53:20 10.6 0.13 158 14WP509 06:49:11.8 +27:45:24 15.9 158 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:07:13 UT
Marc W. Buie, Southwest Research Institute