Event between (281371) 08FC76 and star GA1000:01539890 with event index number of 216397
Geocentric closest approach at 2019/10/22 11:56:14 UTC
J2000 position of star is 06:15:14.5 +11:18:06
Equinox of date position of star is 06:16:16.1 +11:17:40
Stellar brightness G=14.8,
use SENSEUP=128
Star is 40 degrees from the moon.
Moon is 39% illuminated.
TNO apparent brightness V=20.3
[RECON map]
TNO is 11.7 AU from the Sun
and 11.3 AU from the Earth.
The TNO is moving 10.5
km/sec on the sky relative to the star, or,
4.6 arcsec/hr.
The 1-sigma error in the time of the event is 54 seconds.
The 1-sigma cross-track error in the shadow position is
645 km.
The sky-plane scale is
8190.5 km/arcsec.
The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 8.0 sec chord
Diameter=34.0 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is CENTAURR
Star training set for 281371, (2019/10/22 11:56UT) Object RA Dec mag sep mel Betelgeuse 05:56:14.7 +07:24:33 0.4 6.30 46 Alhena 06:38:51.4 +16:22:51 1.9 7.46 33 73 Ori 06:16:51.7 +12:32:35 5.4 1.26 39 PPM 122161 06:16:02.1 +11:38:41 8.0 0.36 40 PPM 122188 06:16:57.8 +11:11:34 10.0 0.18 40 281371 06:16:20.7 +11:17:38 14.8 40 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 11.8 km
RECON observability=1.0 and success probability=53.2%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Penticton | 11:51:02 | -26.4 | Dark | Up | 51.5 | 172.1 | Up | 11:46:02 - 11:56:02 | 314 |
| Manson/Chelan | 11:51:16 | -27.1 | Dark | Up | 53.1 | 171.0 | Up | 11:46:16 - 11:56:16 | 293 |
| Entiat | 11:51:18 | -27.2 | Dark | Up | 53.3 | 170.8 | Up | 11:46:18 - 11:56:18 | 289 |
| Wenatchee | 11:51:21 | -27.3 | Dark | Up | 53.6 | 170.6 | Up | 11:46:21 - 11:56:21 | 286 |
| Ellensburg | 11:51:24 | -27.6 | Dark | Up | 54.0 | 170.2 | Up | 11:46:24 - 11:56:24 | 286 |
| Oroville | 11:51:06 | -26.4 | Dark | Up | 52.2 | 172.2 | Up | 11:46:06 - 11:56:06 | 285 |
| The Dalles | 11:51:38 | -28.3 | Dark | Up | 55.3 | 168.8 | Up | 11:46:38 - 11:56:38 | 277 |
| Brewster | 11:51:14 | -26.8 | Dark | Up | 53.0 | 171.6 | Up | 11:46:14 - 11:56:14 | 276 |
| Tonasket | 11:51:08 | -26.5 | Dark | Up | 52.4 | 172.2 | Up | 11:46:08 - 11:56:08 | 276 |
| Okanogan | 11:51:11 | -26.6 | Dark | Up | 52.7 | 171.9 | Up | 11:46:11 - 11:56:11 | 273 |
| Yakima | 11:51:28 | -27.7 | Dark | Up | 54.4 | 170.1 | Up | 11:46:28 - 11:56:28 | 272 |
| Goldendale | 11:51:35 | -28.0 | Dark | Up | 55.1 | 169.5 | Up | 11:46:35 - 11:56:35 | 260 |
| Sisters | 11:51:50 | -28.8 | Dark | Up | 56.5 | 167.9 | Up | 11:46:50 - 11:56:50 | 254 |
| Maupin | 11:51:41 | -28.3 | Dark | Up | 55.7 | 168.9 | Up | 11:46:41 - 11:56:41 | 254 |
| Toppenish/White Swan | 11:51:29 | -27.6 | Dark | Up | 54.6 | 170.3 | Up | 11:46:29 - 11:56:29 | 252 |
| Madras/Culver | 11:51:45 | -28.4 | Dark | Up | 56.2 | 168.7 | Up | 11:46:45 - 11:56:45 | 236 |
| Oregon Observatory | 11:51:53 | -28.8 | Dark | Up | 56.9 | 168.0 | Up | 11:46:53 - 11:56:53 | 230 |
| Bend | 11:51:51 | -28.7 | Dark | Up | 56.8 | 168.2 | Up | 11:46:51 - 11:56:51 | 227 |
| La Pine/Gilchrist | 11:51:55 | -28.9 | Dark | Up | 57.1 | 167.8 | Up | 11:46:55 - 11:56:55 | 226 |
| Redmond | 11:51:49 | -28.6 | Dark | Up | 56.6 | 168.5 | Up | 11:46:49 - 11:56:49 | 226 |
| Chiloquin | 11:52:05 | -29.4 | Dark | Up | 58.1 | 166.9 | Up | 11:47:05 - 11:57:05 | 209 |
| Klamath Falls | 11:52:07 | -29.4 | Dark | Up | 58.5 | 166.9 | Up | 11:47:07 - 11:57:07 | 189 |
| North Lake | 11:51:56 | -28.6 | Dark | Up | 57.6 | 168.8 | Up | 11:46:56 - 11:56:56 | 166 |
| George/Umatilla | 11:51:29 | -27.0 | Dark | Up | 55.2 | 172.0 | Up | 11:46:29 - 11:56:29 | 163 |
| Pasco | 11:51:26 | -26.8 | Dark | Up | 54.8 | 172.4 | Up | 11:46:26 - 11:56:26 | 162 |
| Tulelake | 11:52:08 | -29.2 | Dark | Up | 58.8 | 167.4 | Up | 11:47:08 - 11:57:08 | 157 |
| PNWRO | 11:51:27 | -26.7 | Dark | Up | 55.1 | 172.8 | Up | 11:46:27 - 11:56:27 | 136 |
| Paisley | 11:51:59 | -28.4 | Dark | Up | 58.2 | 169.3 | Up | 11:46:59 - 11:56:59 | 119 |
| Fall River/Burney | 11:52:16 | -29.3 | Dark | Up | 59.7 | 167.3 | Up | 11:47:16 - 11:57:16 | 114 |
| Lakeview | 11:52:03 | -28.4 | Dark | Up | 58.7 | 169.5 | Up | 11:47:03 - 11:57:03 | 84 |
| Cedarville | 11:52:07 | -28.3 | Dark | Up | 59.4 | 169.7 | Up | 11:47:07 - 11:57:07 | 45 |
| Greenville | 11:52:21 | -29.1 | Dark | Up | 60.7 | 167.8 | Up | 11:47:21 - 11:57:21 | 44 |
| Gimple | 11:52:21 | -29.1 | Dark | Up | 60.7 | 168.0 | Up | 11:47:21 - 11:57:21 | 38 |
| Quincy | 11:52:23 | -29.2 | Dark | Up | 60.9 | 167.8 | Up | 11:47:23 - 11:57:23 | 36 |
| Susanville | 11:52:18 | -28.9 | Dark | Up | 60.4 | 168.5 | Up | 11:47:18 - 11:57:18 | 34 |
| Portola | 11:52:22 | -28.8 | Dark | Up | 61.1 | 168.7 | Up | 11:47:22 - 11:57:22 | -6 |
| Reno | 11:52:22 | -28.4 | Dark | Up | 61.4 | 169.9 | Up | 11:47:22 - 11:57:22 | -66 |
| Carson City | 11:52:25 | -28.4 | Dark | Up | 61.8 | 169.9 | Up | 11:47:25 - 11:57:25 | -83 |
| Gardnerville | 11:52:27 | -28.4 | Dark | Up | 62.0 | 169.9 | Up | 11:47:27 - 11:57:27 | -97 |
| Yerington | 11:52:24 | -28.0 | Dark | Up | 62.1 | 171.1 | Up | 11:47:24 - 11:57:24 | -139 |
| CPSLO | 11:53:01 | -29.5 | Dark | Up | 65.5 | 166.7 | Up | 11:48:01 - 11:58:01 | -187 |
| Lee Vining | 11:52:32 | -28.1 | Dark | Up | 63.1 | 170.9 | Up | 11:47:32 - 11:57:32 | -188 |
| Hawthorne | 11:52:26 | -27.6 | Dark | Up | 62.6 | 172.1 | Up | 11:47:26 - 11:57:26 | -200 |
| Bishop | 11:52:35 | -27.6 | Dark | Up | 63.8 | 172.4 | Up | 11:47:35 - 11:57:35 | -271 |
| Tonopah | 11:52:24 | -26.6 | Dark | Up | 63.2 | 175.0 | Up | 11:47:24 - 11:57:24 | -330 |
| Lone Pine | 11:52:39 | -27.4 | Dark | Up | 64.5 | 173.0 | Up | 11:47:39 - 11:57:39 | -332 |
| Wildwood | 11:53:03 | -28.0 | Dark | Up | 67.0 | 171.1 | Up | 11:48:03 - 11:58:03 | -408 |
| Beatty | 11:52:32 | -26.3 | Dark | Up | 64.3 | 175.9 | Up | 11:47:32 - 11:57:32 | -419 |
| Indian Springs | 11:52:30 | -25.5 | Dark | Up | 64.7 | 178.3 | Up | 11:47:30 - 11:57:30 | -519 |
| Idyllwild | 11:52:58 | -26.5 | Dark | Up | 67.5 | 175.8 | Up | 11:47:58 - 11:57:58 | -577 |
| Henderson | 11:52:32 | -25.0 | Dark | Up | 65.3 | 179.9 | Up | 11:47:32 - 11:57:32 | -600 |
| Searchlight/Boulder City | 11:52:36 | -25.0 | Dark | Up | 65.8 | 180.1 | Up | 11:47:36 - 11:57:36 | -633 |
| Laughlin/Bullhead City | 11:52:37 | -24.7 | Dark | Up | 66.1 | 181.0 | Up | 11:47:37 - 11:57:37 | -676 |
| Mohave Valley | 11:52:39 | -24.7 | Dark | Up | 66.4 | 181.0 | Up | 11:47:39 - 11:57:39 | -690 |
| Calipatria | 11:52:58 | -25.5 | Dark | Up | 68.2 | 178.8 | Up | 11:47:58 - 11:57:58 | -703 |
| Kingman/Dolan Springs | 11:52:34 | -24.3 | Dark | Up | 66.1 | 182.2 | Up | 11:47:34 - 11:57:34 | -716 |
| Patrick | 11:52:32 | -24.1 | Dark | Up | 65.9 | 182.6 | Up | 11:47:32 - 11:57:32 | -719 |
| Lake Havasu City | 11:52:41 | -24.5 | Dark | Up | 66.8 | 181.7 | Up | 11:47:41 - 11:57:41 | -730 |
| Parker | 11:52:44 | -24.5 | Dark | Up | 67.1 | 181.8 | Up | 11:47:44 - 11:57:44 | -751 |
| Blythe | 11:52:50 | -24.8 | Dark | Up | 67.7 | 181.1 | Up | 11:47:50 - 11:57:50 | -754 |
| DCO | 11:52:32 | -23.6 | Dark | Up | 66.1 | 184.4 | Up | 11:47:32 - 11:57:32 | -791 |
| Yuma | 11:52:58 | -24.8 | Dark | Up | 68.6 | 181.2 | Up | 11:47:58 - 11:57:58 | -798 |
| Niwot | 11:51:19 | -17.3 | AT | Up | 60.0 | 198.8 | Up | 11:46:19 - 11:56:19 | -1118 |
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 281371, (2019/10/22 11:56UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 6.30 46 Alhena 06:37:42.8 +16:23:57 1.9 7.46 33 73 Ori 06:15:44.9 +12:33:03 5.4 1.26 39 PPM 122161 06:14:55.8 +11:39:08 8.0 0.36 40 PPM 122188 06:15:51.7 +11:12:03 10.0 0.18 40 281371 06:15:14.5 +11:18:06 14.8 40 Positions are for J2000
Event circumstances last updated at 2018/06/05 18:20:02 UT
Marc W. Buie, Southwest Research Institute