Event between (50000) Quaoar and star UC4-373-104756 with event index number of 48059
Geocentric closest approach at 2016/07/23 05:15:50 UTC
J2000 position of star is 17:49:56.6 -15:24:12
Equinox of date position of star is 17:50:53.1 -15:24:26
Stellar brightness R=14.5
Star is 74 degrees from the moon.
Moon is 88% illuminated.
TNO apparent brightness V=18.8
[RECON map]
TNO is 43.0 AU from the Sun
and 42.1 AU from the Earth.
The TNO is moving 20.0
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 117 seconds.
The 1-sigma cross-track error in the shadow position is
1563 km.
The sky-plane scale is
30536.6 km/arcsec.
The TNO has an absolute magnitude Hv=2.4
Diameter=1995.3 km assuming a 5% albedo -- 99.5 sec chord
Diameter=814.6 km assuming a 30% albedo -- 40.6 sec chord
Dynamical classification is CLASSICAL
Star training set for 50000, (2016/07/23 05:16UT) Object RA Dec mag sep mel Antares 16:30:25.5 -26:28:03 0.9 21.76 92 35Eta Oph 17:11:19.7 -15:44:40 2.6 9.53 84 PPM 233599 17:48:33.5 -14:43:51 5.9 0.88 75 PPM 233652 17:51:21.3 -15:58:28 8.3 0.58 74 PPM 233628 17:50:34.6 -15:27:11 9.7 0.09 75 50000 17:50:53.6 -15:24:26 14.5 74 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 18.0 km
RECON observability=0.6 and success probability=1.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 05:14:43 | -11.4 | CT | Down | 25.4 | 172.7 | Low | 05:04:26 - 05:25:00 | -4036 |
| Tonasket | 05:14:43 | -11.6 | CT | Down | 25.6 | 172.7 | Low | 05:04:26 - 05:25:00 | -4047 |
| Okanogan | 05:14:45 | -11.8 | CT | Down | 25.9 | 172.5 | Low | 05:04:28 - 05:25:02 | -4062 |
| Brewster | 05:14:45 | -11.9 | CT | Down | 26.2 | 172.3 | Low | 05:04:28 - 05:25:02 | -4075 |
| Manson/Chelan | 05:14:47 | -11.9 | CT | Down | 26.4 | 171.9 | Low | 05:04:30 - 05:25:04 | -4083 |
| Entiat | 05:14:47 | -12.1 | AT | Down | 26.6 | 171.8 | Low | 05:04:30 - 05:25:04 | -4094 |
| Wenatchee | 05:14:48 | -12.2 | AT | Down | 26.8 | 171.6 | Low | 05:04:31 - 05:25:05 | -4106 |
| Ellensburg | 05:14:49 | -12.4 | AT | Down | 27.2 | 171.4 | Low | 05:04:32 - 05:25:06 | -4126 |
| Yakima | 05:14:49 | -12.7 | AT | Down | 27.6 | 171.3 | Low | 05:04:32 - 05:25:06 | -4147 |
| Toppenish/White Swan | 05:14:49 | -13.0 | AT | Down | 27.8 | 171.5 | Low | 05:04:32 - 05:25:06 | -4158 |
| Pasco | 05:14:44 | -13.6 | AT | Up | 28.1 | 172.8 | Low | 05:04:27 - 05:25:01 | -4170 |
| PNWRO | 05:14:44 | -13.9 | AT | Up | 28.3 | 173.1 | Low | 05:04:27 - 05:25:01 | -4184 |
| Goldendale | 05:14:51 | -13.2 | AT | Down | 28.3 | 171.0 | Low | 05:04:34 - 05:25:08 | -4185 |
| George/Umatilla | 05:14:46 | -13.8 | AT | Up | 28.4 | 172.6 | Low | 05:04:29 - 05:25:03 | -4187 |
| The Dalles | 05:14:53 | -13.2 | AT | Down | 28.5 | 170.6 | Low | 05:04:36 - 05:25:10 | -4196 |
| Maupin | 05:14:52 | -13.6 | AT | Down | 28.9 | 170.7 | Low | 05:04:35 - 05:25:09 | -4219 |
| Madras/Culver | 05:14:53 | -13.9 | AT | Down | 29.5 | 170.6 | Low | 05:04:36 - 05:25:10 | -4248 |
| Sisters | 05:14:55 | -14.0 | AT | Down | 29.7 | 170.0 | Low | 05:04:38 - 05:25:12 | -4264 |
| Redmond | 05:14:53 | -14.2 | AT | Down | 29.8 | 170.5 | Low | 05:04:36 - 05:25:10 | -4267 |
| Bend | 05:14:54 | -14.3 | AT | Down | 30.0 | 170.3 | Up | 05:04:37 - 05:25:11 | -4278 |
| Oregon Observatory | 05:14:55 | -14.3 | AT | Down | 30.2 | 170.2 | Up | 05:04:38 - 05:25:12 | -4287 |
| La Pine/Gilchrist | 05:14:55 | -14.5 | AT | Down | 30.4 | 170.1 | Up | 05:04:38 - 05:25:12 | -4298 |
| North Lake | 05:14:53 | -15.1 | AT | Down | 30.9 | 170.7 | Up | 05:04:36 - 05:25:10 | -4325 |
| Paisley | 05:14:52 | -15.7 | AT | Down | 31.4 | 171.0 | Up | 05:04:35 - 05:25:09 | -4358 |
| Chiloquin | 05:14:57 | -15.1 | AT | Down | 31.4 | 169.6 | Up | 05:04:40 - 05:25:14 | -4360 |
| Klamath Falls | 05:14:57 | -15.4 | AT | Down | 31.8 | 169.6 | Up | 05:04:40 - 05:25:14 | -4380 |
| Lakeview | 05:14:51 | -16.1 | AT | Up | 32.0 | 171.2 | Up | 05:04:34 - 05:25:08 | -4388 |
| Tulelake | 05:14:57 | -15.7 | AT | Down | 32.1 | 169.9 | Up | 05:04:40 - 05:25:14 | -4397 |
| Cedarville | 05:14:52 | -16.7 | AT | Up | 32.6 | 171.3 | Up | 05:04:35 - 05:25:09 | -4428 |
| Fall River/Burney | 05:14:57 | -16.4 | AT | Down | 33.0 | 169.9 | Up | 05:04:40 - 05:25:14 | -4452 |
| Susanville | 05:14:54 | -17.3 | AT | Up | 33.7 | 170.7 | Up | 05:04:37 - 05:25:11 | -4493 |
| Greenville | 05:14:56 | -17.3 | AT | Up | 33.9 | 170.3 | Up | 05:04:39 - 05:25:13 | -4509 |
| Quincy | 05:14:56 | -17.5 | AT | Up | 34.1 | 170.3 | Up | 05:04:39 - 05:25:13 | -4522 |
| Portola | 05:14:54 | -17.8 | AT | Up | 34.3 | 170.8 | Up | 05:04:37 - 05:25:11 | -4532 |
| Reno | 05:14:51 | -18.4 | Dark | Up | 34.6 | 171.5 | Up | 05:04:34 - 05:25:08 | -4551 |
| Carson City | 05:14:52 | -18.6 | Dark | Up | 35.0 | 171.5 | Up | 05:04:35 - 05:25:09 | -4574 |
| Yerington | 05:14:49 | -19.1 | Dark | Up | 35.3 | 172.2 | Up | 05:04:32 - 05:25:06 | -4590 |
| Gardnerville | 05:14:52 | -18.8 | Dark | Up | 35.2 | 171.6 | Up | 05:04:35 - 05:25:09 | -4590 |
| Hawthorne | 05:14:47 | -19.7 | Dark | Up | 35.8 | 172.8 | Up | 05:04:30 - 05:25:04 | -4622 |
| Niwot | 05:13:50 | -24.4 | Dark | Up | 34.1 | 188.4 | Up | 05:03:33 - 05:24:07 | -4626 |
| Lee Vining | 05:14:50 | -19.9 | Dark | Up | 36.3 | 172.2 | Up | 05:04:33 - 05:25:07 | -4656 |
| Tonopah | 05:14:42 | -20.8 | Dark | Up | 36.4 | 174.4 | Up | 05:04:25 - 05:24:59 | -4660 |
| Bishop | 05:14:47 | -20.7 | Dark | Up | 37.0 | 173.0 | Up | 05:04:30 - 05:25:04 | -4700 |
| Beatty | 05:14:40 | -21.9 | Dark | Up | 37.5 | 174.9 | Up | 05:04:23 - 05:24:57 | -4740 |
| Lone Pine | 05:14:46 | -21.5 | Dark | Up | 37.7 | 173.3 | Up | 05:04:29 - 05:25:03 | -4753 |
| Indian Springs | 05:14:36 | -22.7 | Dark | Up | 37.9 | 176.2 | Up | 05:04:19 - 05:24:53 | -4769 |
| Henderson | 05:14:33 | -23.5 | Dark | Up | 38.5 | 177.0 | Up | 05:04:16 - 05:24:50 | -4811 |
| CPSLO | 05:14:58 | -21.0 | Dark | Up | 38.7 | 170.1 | Up | 05:04:41 - 05:25:15 | -4829 |
| Searchlight/Boulder City | 05:14:33 | -23.9 | Dark | Up | 39.1 | 177.0 | Up | 05:04:16 - 05:24:50 | -4851 |
| Patrick | 05:14:29 | -24.5 | Dark | Up | 39.2 | 178.3 | Up | 05:04:12 - 05:24:46 | -4862 |
| Laughlin/Bullhead City | 05:14:32 | -24.3 | Dark | Up | 39.4 | 177.4 | Up | 05:04:15 - 05:24:49 | -4875 |
| Kingman/Dolan Springs | 05:14:29 | -24.6 | Dark | Up | 39.4 | 178.1 | Up | 05:04:12 - 05:24:46 | -4876 |
| DCO | 05:14:25 | -25.1 | Dark | Up | 39.5 | 179.2 | Up | 05:04:08 - 05:24:42 | -4889 |
| Mohave Valley | 05:14:32 | -24.6 | Dark | Up | 39.7 | 177.4 | Up | 05:04:15 - 05:24:49 | -4894 |
| Lake Havasu City | 05:14:31 | -25.0 | Dark | Up | 40.1 | 177.7 | Up | 05:04:14 - 05:24:48 | -4924 |
| Wildwood | 05:14:50 | -23.0 | Dark | Up | 40.2 | 172.4 | Up | 05:04:33 - 05:25:07 | -4924 |
| Parker | 05:14:31 | -25.3 | Dark | Up | 40.4 | 177.8 | Up | 05:04:14 - 05:24:48 | -4949 |
| Idyllwild | 05:14:42 | -24.3 | Dark | Up | 40.7 | 174.7 | Up | 05:04:25 - 05:24:59 | -4961 |
| Blythe | 05:14:32 | -25.5 | Dark | Up | 40.9 | 177.4 | Up | 05:04:15 - 05:24:49 | -4985 |
| Calipatria | 05:14:37 | -25.4 | Dark | Up | 41.4 | 176.2 | Up | 05:04:20 - 05:24:54 | -5014 |
| Yuma | 05:14:33 | -26.2 | Dark | Up | 41.9 | 177.3 | Up | 05:04:16 - 05:24:50 | -5052 |
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 50000, (2016/07/23 05:16UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:55 0.9 21.76 92 35Eta Oph 17:10:22.7 -15:43:29 2.6 9.53 84 PPM 233599 17:47:36.8 -14:43:33 5.9 0.88 75 PPM 233652 17:50:24.0 -15:58:15 8.3 0.58 74 PPM 233628 17:49:37.6 -15:26:57 9.7 0.09 75 50000 17:49:56.6 -15:24:12 14.5 74 Positions are for J2000
Event circumstances last updated at 2016/06/04 00:47:25 UT
Marc W. Buie, Southwest Research Institute