Event between 10TH and star GDR2_82.899_4.276 with event index number of 147557
Geocentric closest approach at 2018/08/22 11:58:08 UTC
J2000 position of star is 05:31:35.8 +04:16:34
Equinox of date position of star is 05:32:34.2 +04:17:19
Stellar brightness G=14.6,
use SENSEUP=128
Star is 152 degrees from the moon.
Moon is 86% illuminated.
TNO apparent brightness V=22.0
[RECON map]
TNO is 17.8 AU from the Sun
and 18.2 AU from the Earth.
The TNO is moving 18.8
km/sec on the sky relative to the star, or,
5.1 arcsec/hr.
The 1-sigma error in the time of the event is 86 seconds.
The 1-sigma cross-track error in the shadow position is
947 km.
The sky-plane scale is
13187.4 km/arcsec.
The TNO has an absolute magnitude Hv=9.2
Diameter=88.3 km assuming a 5% albedo -- 4.7 sec chord
Diameter=36.1 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is CENTAURR
Star training set for 10TH, (2018/08/22 11:58UT) Object RA Dec mag sep mel Betelgeuse 05:56:10.9 +07:24:33 0.4 6.65 158 Bellatrix 05:26:07.9 +06:21:54 1.6 2.62 151 PPM 149151 05:35:43.1 +05:40:20 6.4 1.59 153 PPM 149085 05:32:26.2 +04:19:41 8.2 0.05 151 10TH 05:32:35.0 +04:17:19 14.6 152 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 33.2 km
RECON observability=0.4 and success probability=8.9%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 11:54:04 | -10.6 | CT | Down | 26.7 | 116.8 | Low | 11:46:24 - 12:01:44 | -940 |
| Tonasket | 11:54:03 | -10.8 | CT | Down | 26.8 | 116.7 | Low | 11:46:23 - 12:01:43 | -962 |
| Okanogan | 11:54:02 | -11.0 | CT | Down | 26.9 | 116.4 | Low | 11:46:22 - 12:01:42 | -995 |
| Brewster | 11:54:01 | -11.3 | CT | Down | 26.9 | 116.1 | Low | 11:46:21 - 12:01:41 | -1022 |
| Manson/Chelan | 11:54:00 | -11.6 | CT | Down | 26.8 | 115.7 | Low | 11:46:20 - 12:01:40 | -1045 |
| Entiat | 11:53:59 | -11.8 | CT | Down | 26.8 | 115.5 | Low | 11:46:19 - 12:01:39 | -1067 |
| Wenatchee | 11:53:58 | -12.0 | CT | Down | 26.9 | 115.3 | Low | 11:46:18 - 12:01:38 | -1092 |
| Ellensburg | 11:53:57 | -12.3 | AT | Down | 26.9 | 114.9 | Low | 11:46:17 - 12:01:37 | -1133 |
| Yakima | 11:53:56 | -12.5 | AT | Down | 27.0 | 114.7 | Low | 11:46:16 - 12:01:36 | -1172 |
| Pasco | 11:53:59 | -11.9 | CT | Down | 28.1 | 115.8 | Low | 11:46:19 - 12:01:39 | -1191 |
| Toppenish/White Swan | 11:53:56 | -12.6 | AT | Down | 27.2 | 114.7 | Low | 11:46:16 - 12:01:36 | -1191 |
| PNWRO | 11:53:59 | -11.9 | CT | Down | 28.3 | 115.9 | Low | 11:46:19 - 12:01:39 | -1213 |
| George/Umatilla | 11:53:58 | -12.2 | AT | Down | 28.1 | 115.5 | Low | 11:46:18 - 12:01:38 | -1225 |
| Goldendale | 11:53:54 | -13.1 | AT | Down | 27.2 | 114.1 | Low | 11:46:14 - 12:01:34 | -1249 |
| The Dalles | 11:53:53 | -13.5 | AT | Down | 27.0 | 113.7 | Low | 11:46:13 - 12:01:33 | -1274 |
| Maupin | 11:53:52 | -13.6 | AT | Down | 27.3 | 113.6 | Low | 11:46:12 - 12:01:32 | -1313 |
| Madras/Culver | 11:53:51 | -13.9 | AT | Down | 27.5 | 113.3 | Low | 11:46:11 - 12:01:31 | -1367 |
| Redmond | 11:53:50 | -14.2 | AT | Down | 27.6 | 113.1 | Low | 11:46:10 - 12:01:30 | -1402 |
| Sisters | 11:53:49 | -14.4 | AT | Down | 27.3 | 112.7 | Low | 11:46:09 - 12:01:29 | -1404 |
| Bend | 11:53:49 | -14.4 | AT | Down | 27.6 | 112.8 | Low | 11:46:09 - 12:01:29 | -1425 |
| Oregon Observatory | 11:53:49 | -14.5 | AT | Down | 27.5 | 112.6 | Low | 11:46:09 - 12:01:29 | -1443 |
| La Pine/Gilchrist | 11:53:48 | -14.7 | AT | Down | 27.6 | 112.5 | Low | 11:46:08 - 12:01:28 | -1464 |
| North Lake | 11:53:49 | -14.6 | AT | Down | 28.2 | 112.8 | Low | 11:46:09 - 12:01:29 | -1501 |
| Paisley | 11:53:49 | -14.6 | AT | Down | 28.6 | 112.8 | Low | 11:46:09 - 12:01:29 | -1552 |
| Chiloquin | 11:53:45 | -15.5 | AT | Down | 27.7 | 111.6 | Low | 11:46:05 - 12:01:25 | -1577 |
| Lakeview | 11:53:48 | -14.8 | AT | Down | 28.9 | 112.7 | Low | 11:46:08 - 12:01:28 | -1601 |
| Niwot | 11:54:31 | -5.3 | CT | Down | 40.0 | 125.5 | Up | 11:46:51 - 12:02:11 | -1608 |
| Klamath Falls | 11:53:44 | -15.7 | AT | Down | 27.9 | 111.5 | Low | 11:46:04 - 12:01:24 | -1611 |
| Tulelake | 11:53:45 | -15.6 | AT | Down | 28.2 | 111.7 | Low | 11:46:05 - 12:01:25 | -1635 |
| Cedarville | 11:53:47 | -15.0 | AT | Down | 29.3 | 112.5 | Low | 11:46:07 - 12:01:27 | -1665 |
| Fall River/Burney | 11:53:43 | -16.1 | AT | Down | 28.6 | 111.3 | Low | 11:46:03 - 12:01:23 | -1725 |
| Susanville | 11:53:44 | -15.9 | AT | Down | 29.4 | 111.5 | Low | 11:46:04 - 12:01:24 | -1782 |
| Gimple | 11:53:44 | -16.2 | AT | Down | 29.3 | 111.2 | Low | 11:46:04 - 12:01:24 | -1812 |
| Greenville | 11:53:43 | -16.2 | AT | Down | 29.3 | 111.1 | Low | 11:46:03 - 12:01:23 | -1813 |
| Quincy | 11:53:43 | -16.3 | AT | Down | 29.3 | 111.0 | Low | 11:46:03 - 12:01:23 | -1833 |
| Portola | 11:53:44 | -16.1 | AT | Down | 29.7 | 111.4 | Low | 11:46:04 - 12:01:24 | -1841 |
| Reno | 11:53:46 | -15.8 | AT | Down | 30.3 | 111.7 | Up | 11:46:06 - 12:01:26 | -1861 |
| Carson City | 11:53:45 | -16.0 | AT | Down | 30.4 | 111.6 | Up | 11:46:05 - 12:01:25 | -1898 |
| Yerington | 11:53:47 | -15.6 | AT | Down | 31.0 | 112.0 | Up | 11:46:07 - 12:01:27 | -1911 |
| Gardnerville | 11:53:44 | -16.1 | AT | Down | 30.6 | 111.5 | Up | 11:46:04 - 12:01:24 | -1922 |
| Hawthorne | 11:53:47 | -15.5 | AT | Down | 31.5 | 112.1 | Up | 11:46:07 - 12:01:27 | -1952 |
| Tonopah | 11:53:51 | -14.7 | AT | Down | 32.8 | 113.0 | Up | 11:46:11 - 12:01:31 | -1984 |
| Lee Vining | 11:53:45 | -16.1 | AT | Down | 31.4 | 111.4 | Up | 11:46:05 - 12:01:25 | -2016 |
| Bishop | 11:53:46 | -15.9 | AT | Down | 32.1 | 111.7 | Up | 11:46:06 - 12:01:26 | -2069 |
| Beatty | 11:53:51 | -15.0 | AT | Down | 33.5 | 112.7 | Up | 11:46:11 - 12:01:31 | -2097 |
| Indian Springs | 11:53:54 | -14.3 | AT | Down | 34.5 | 113.4 | Up | 11:46:14 - 12:01:34 | -2117 |
| Lone Pine | 11:53:47 | -16.0 | AT | Down | 32.7 | 111.5 | Up | 11:46:07 - 12:01:27 | -2144 |
| Henderson | 11:53:55 | -14.1 | AT | Down | 35.2 | 113.6 | Up | 11:46:15 - 12:01:35 | -2164 |
| Patrick | 11:53:58 | -13.5 | AT | Down | 36.3 | 114.1 | Up | 11:46:18 - 12:01:38 | -2213 |
| Searchlight/Boulder City | 11:53:55 | -14.3 | AT | Down | 35.5 | 113.3 | Up | 11:46:15 - 12:01:35 | -2222 |
| DCO | 11:54:00 | -13.1 | AT | Down | 37.0 | 114.5 | Up | 11:46:20 - 12:01:40 | -2235 |
| Kingman/Dolan Springs | 11:53:58 | -13.7 | AT | Down | 36.2 | 113.8 | Up | 11:46:18 - 12:01:38 | -2239 |
| Laughlin/Bullhead City | 11:53:56 | -14.1 | AT | Down | 35.9 | 113.4 | Up | 11:46:16 - 12:01:36 | -2248 |
| Mohave Valley | 11:53:55 | -14.3 | AT | Down | 36.0 | 113.2 | Up | 11:46:15 - 12:01:35 | -2277 |
| CPSLO | 11:53:37 | -18.5 | Dark | Down | 31.1 | 108.7 | Up | 11:45:57 - 12:01:17 | -2308 |
| Lake Havasu City | 11:53:56 | -14.2 | AT | Down | 36.3 | 113.1 | Up | 11:46:16 - 12:01:36 | -2315 |
| Parker | 11:53:56 | -14.4 | AT | Down | 36.5 | 112.9 | Up | 11:46:16 - 12:01:36 | -2351 |
| Blythe | 11:53:54 | -14.8 | AT | Down | 36.4 | 112.3 | Up | 11:46:14 - 12:01:34 | -2410 |
| Wildwood | 11:53:43 | -17.6 | AT | Down | 33.1 | 109.5 | Up | 11:46:03 - 12:01:23 | -2411 |
| Idyllwild | 11:53:47 | -16.4 | AT | Down | 34.7 | 110.7 | Up | 11:46:07 - 12:01:27 | -2426 |
| Calipatria | 11:53:51 | -15.8 | AT | Down | 35.9 | 111.2 | Up | 11:46:11 - 12:01:31 | -2474 |
| Yuma | 11:53:54 | -15.2 | AT | Down | 36.8 | 111.6 | Up | 11:46:14 - 12:01:34 | -2508 |
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 10TH, (2018/08/22 11:58UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 6.65 158 Bellatrix 05:25:07.8 +06:20:58 1.6 2.62 151 PPM 149151 05:34:43.3 +05:39:40 6.4 1.59 153 PPM 149085 05:31:27.0 +04:18:56 8.2 0.05 151 10TH 05:31:35.8 +04:16:34 14.6 151 Positions are for J2000
Event circumstances last updated at 2018/05/24 17:57:58 UT
Marc W. Buie, Southwest Research Institute