Event between 12GU11 and star GA0860:04366307 with event index number of 255646
Geocentric closest approach at 2020/04/21 09:17:15 UTC
J2000 position of star is 14:35:01.0 -03:55:59
Equinox of date position of star is 14:36:01.9 -04:01:02
Stellar brightness G=14.0,
use SENSEUP=64
Star is 155 degrees from the moon.
Moon is 3% illuminated.
TNO apparent brightness V=22.9
[RECON map]
TNO is 25.5 AU from the Sun
and 24.5 AU from the Earth.
The TNO is moving 22.6
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 82 seconds.
The 1-sigma cross-track error in the shadow position is
1141 km.
The sky-plane scale is
17756.1 km/arcsec.
The TNO has an absolute magnitude Hv=8.9
Diameter=97.7 km assuming a 5% albedo -- 4.3 sec chord
Diameter=39.9 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
Star training set for 12GU11, (2020/04/21 09:17UT) Object RA Dec mag sep mel Spica 13:26:15.9 -11:16:00 1.0 18.74 167 27Bet Lib 15:18:06.2 -09:27:24 2.6 11.76 144 105Phi Vir 14:29:15.1 -02:19:05 4.8 2.41 157 PPM 197720 14:37:14.1 -03:52:07 8.4 0.33 155 12GU11 14:36:04.7 -04:01:15 14.0 155 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 11.3 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) |
| Kelowna | 09:18:01 | -25.5 | Dark | Down | 35.3 | 193.8 | Up | 09:10:40 - 09:25:23 | 7284 |
| Summerland | 09:18:03 | -25.8 | Dark | Down | 35.6 | 193.5 | Up | 09:10:41 - 09:25:24 | 7261 |
| Penticton | 09:18:02 | -25.9 | Dark | Down | 35.7 | 193.7 | Up | 09:10:41 - 09:25:24 | 7260 |
| Okanagan Falls | 09:18:02 | -26.0 | Dark | Down | 35.9 | 193.7 | Up | 09:10:40 - 09:25:23 | 7249 |
| Oliver | 09:18:01 | -26.2 | Dark | Down | 36.0 | 193.7 | Up | 09:10:39 - 09:25:22 | 7240 |
| Anarchist Mountain Observatory | 09:18:00 | -26.3 | Dark | Down | 36.2 | 194.0 | Up | 09:10:39 - 09:25:22 | 7235 |
| Oroville | 09:18:00 | -26.4 | Dark | Down | 36.2 | 193.9 | Up | 09:10:38 - 09:25:21 | 7229 |
| Tonasket | 09:18:00 | -26.6 | Dark | Down | 36.5 | 194.0 | Up | 09:10:38 - 09:25:21 | 7216 |
| Okanogan | 09:18:00 | -26.9 | Dark | Down | 36.8 | 193.8 | Up | 09:10:39 - 09:25:22 | 7192 |
| Brewster | 09:18:00 | -27.2 | Dark | Down | 37.1 | 193.6 | Up | 09:10:39 - 09:25:22 | 7172 |
| Manson/Chelan | 09:18:00 | -27.5 | Dark | Down | 37.4 | 193.2 | Up | 09:10:39 - 09:25:22 | 7150 |
| Entiat | 09:18:01 | -27.8 | Dark | Down | 37.6 | 193.2 | Up | 09:10:40 - 09:25:23 | 7135 |
| Wenatchee | 09:18:01 | -28.0 | Dark | Down | 37.9 | 193.1 | Up | 09:10:39 - 09:25:22 | 7118 |
| Ellensburg | 09:18:00 | -28.5 | Dark | Down | 38.3 | 192.9 | Up | 09:10:39 - 09:25:22 | 7087 |
| Pasco | 09:17:55 | -28.8 | Dark | Down | 38.8 | 194.8 | Up | 09:10:34 - 09:25:17 | 7078 |
| PNWRO | 09:17:54 | -28.9 | Dark | Down | 39.0 | 195.1 | Up | 09:10:32 - 09:25:15 | 7069 |
| Yakima | 09:18:00 | -28.8 | Dark | Down | 38.7 | 192.9 | Up | 09:10:39 - 09:25:22 | 7062 |
| Toppenish/White Swan | 09:17:59 | -29.0 | Dark | Down | 38.9 | 193.2 | Up | 09:10:38 - 09:25:21 | 7053 |
| George/Umatilla | 09:17:54 | -29.1 | Dark | Down | 39.2 | 194.6 | Up | 09:10:33 - 09:25:16 | 7052 |
| Niwot | 09:16:57 | -28.8 | Dark | Down | 40.2 | 213.9 | Up | 09:09:36 - 09:24:19 | 7050 |
| SwRI | 09:16:57 | -29.0 | Dark | Down | 40.4 | 213.8 | Up | 09:09:36 - 09:24:19 | 7041 |
| Goldendale | 09:17:59 | -29.6 | Dark | Down | 39.5 | 192.7 | Up | 09:10:37 - 09:25:20 | 7008 |
| The Dalles | 09:18:00 | -29.9 | Dark | Down | 39.8 | 192.3 | Up | 09:10:38 - 09:25:21 | 6984 |
| Maupin | 09:18:00 | -30.3 | Dark | Down | 40.2 | 192.5 | Up | 09:10:38 - 09:25:21 | 6960 |
| Madras/Culver | 09:17:58 | -30.8 | Dark | Down | 40.7 | 192.6 | Up | 09:10:36 - 09:25:19 | 6924 |
| Redmond | 09:17:58 | -31.2 | Dark | Down | 41.0 | 192.6 | Up | 09:10:37 - 09:25:20 | 6900 |
| Sisters | 09:17:59 | -31.2 | Dark | Down | 41.1 | 192.1 | Up | 09:10:38 - 09:25:21 | 6890 |
| Bend | 09:17:58 | -31.4 | Dark | Down | 41.3 | 192.4 | Up | 09:10:36 - 09:25:19 | 6882 |
| Oregon Observatory | 09:17:58 | -31.6 | Dark | Down | 41.5 | 192.3 | Up | 09:10:36 - 09:25:19 | 6867 |
| La Pine/Gilchrist | 09:17:59 | -31.8 | Dark | Down | 41.7 | 192.3 | Up | 09:10:37 - 09:25:20 | 6852 |
| North Lake | 09:17:56 | -32.0 | Dark | Down | 42.0 | 193.1 | Up | 09:10:34 - 09:25:17 | 6840 |
| Paisley | 09:17:53 | -32.5 | Dark | Down | 42.5 | 193.7 | Up | 09:10:31 - 09:25:14 | 6813 |
| Lakeview | 09:17:52 | -32.9 | Dark | Down | 42.9 | 194.1 | Up | 09:10:30 - 09:25:13 | 6784 |
| Chiloquin | 09:17:57 | -32.9 | Dark | Down | 42.8 | 192.0 | Up | 09:10:36 - 09:25:19 | 6768 |
| Klamath Falls | 09:17:57 | -33.2 | Dark | Down | 43.1 | 192.2 | Up | 09:10:35 - 09:25:18 | 6747 |
| Cedarville | 09:17:49 | -33.4 | Dark | Down | 43.6 | 194.4 | Up | 09:10:28 - 09:25:11 | 6744 |
| Tulelake | 09:17:55 | -33.4 | Dark | Down | 43.4 | 192.6 | Up | 09:10:33 - 09:25:16 | 6737 |
| Fall River/Burney | 09:17:53 | -34.2 | Dark | Down | 44.2 | 192.9 | Up | 09:10:32 - 09:25:15 | 6677 |
| Susanville | 09:17:49 | -34.6 | Dark | Down | 44.7 | 194.0 | Up | 09:10:28 - 09:25:11 | 6654 |
| Gimple | 09:17:50 | -34.9 | Dark | Down | 45.0 | 193.8 | Up | 09:10:28 - 09:25:11 | 6628 |
| Greenville | 09:17:50 | -34.9 | Dark | Down | 45.0 | 193.7 | Up | 09:10:29 - 09:25:12 | 6626 |
| Portola | 09:17:48 | -35.1 | Dark | Down | 45.3 | 194.4 | Up | 09:10:27 - 09:25:10 | 6617 |
| Reno | 09:17:45 | -35.1 | Dark | Down | 45.4 | 195.4 | Up | 09:10:23 - 09:25:06 | 6617 |
| Quincy | 09:17:49 | -35.1 | Dark | Down | 45.2 | 193.8 | Up | 09:10:28 - 09:25:11 | 6612 |
| Yerington | 09:17:42 | -35.4 | Dark | Down | 45.8 | 196.5 | Up | 09:10:21 - 09:25:04 | 6596 |
| Carson City | 09:17:44 | -35.5 | Dark | Down | 45.7 | 195.5 | Up | 09:10:22 - 09:25:05 | 6592 |
| Tonopah | 09:17:33 | -35.6 | Dark | Down | 46.2 | 199.4 | Up | 09:10:12 - 09:24:55 | 6586 |
| Hawthorne | 09:17:39 | -35.7 | Dark | Down | 46.1 | 197.3 | Up | 09:10:18 - 09:25:01 | 6578 |
| Gardnerville | 09:17:45 | -35.7 | Dark | Down | 46.0 | 195.7 | Up | 09:10:23 - 09:25:06 | 6576 |
| Lee Vining | 09:17:39 | -36.4 | Dark | Down | 46.8 | 196.8 | Up | 09:10:18 - 09:25:01 | 6523 |
| Indian Springs | 09:17:26 | -36.3 | Dark | Down | 47.2 | 202.1 | Up | 09:10:05 - 09:24:48 | 6523 |
| Beatty | 09:17:29 | -36.5 | Dark | Down | 47.2 | 200.5 | Up | 09:10:08 - 09:24:51 | 6515 |
| Henderson | 09:17:22 | -36.5 | Dark | Down | 47.5 | 203.3 | Up | 09:10:00 - 09:24:43 | 6504 |
| Bishop | 09:17:36 | -36.7 | Dark | Down | 47.2 | 198.0 | Up | 09:10:14 - 09:24:57 | 6501 |
| Patrick | 09:17:17 | -36.6 | Dark | Down | 47.7 | 205.1 | Up | 09:09:55 - 09:24:38 | 6490 |
| DCO | 09:17:13 | -36.6 | Dark | Down | 47.7 | 206.2 | Up | 09:09:52 - 09:24:35 | 6488 |
| Kingman/Dolan Springs | 09:17:17 | -36.9 | Dark | Down | 47.9 | 204.9 | Up | 09:09:55 - 09:24:38 | 6468 |
| Searchlight/Boulder City | 09:17:20 | -37.0 | Dark | Down | 48.0 | 203.6 | Up | 09:09:59 - 09:24:42 | 6463 |
| Lone Pine | 09:17:33 | -37.2 | Dark | Down | 47.8 | 198.7 | Up | 09:10:12 - 09:24:55 | 6455 |
| Laughlin/Bullhead City | 09:17:18 | -37.1 | Dark | Down | 48.1 | 204.2 | Up | 09:09:57 - 09:24:40 | 6451 |
| Mohave Valley | 09:17:18 | -37.3 | Dark | Down | 48.4 | 204.3 | Up | 09:09:57 - 09:24:40 | 6431 |
| Lake Havasu City | 09:17:16 | -37.6 | Dark | Down | 48.7 | 204.9 | Up | 09:09:54 - 09:24:37 | 6408 |
| Parker | 09:17:15 | -37.9 | Dark | Down | 49.0 | 205.1 | Up | 09:09:53 - 09:24:36 | 6382 |
| Blythe | 09:17:15 | -38.4 | Dark | Down | 49.6 | 204.9 | Up | 09:09:53 - 09:24:36 | 6333 |
| CPSLO | 09:17:40 | -39.3 | Dark | Down | 49.7 | 195.4 | Up | 09:10:19 - 09:25:02 | 6279 |
| Idyllwild | 09:17:23 | -39.2 | Dark | Down | 50.1 | 201.8 | Up | 09:10:01 - 09:24:44 | 6279 |
| Calipatria | 09:17:17 | -39.3 | Dark | Down | 50.3 | 203.8 | Up | 09:09:56 - 09:24:39 | 6267 |
| Yuma | 09:17:13 | -39.3 | Dark | Down | 50.4 | 205.3 | Up | 09:09:52 - 09:24:35 | 6261 |
| Wildwood | 09:17:31 | -39.7 | Dark | Down | 50.3 | 198.9 | Up | 09:10:09 - 09:24:52 | 6249 |
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 12GU11, (2020/04/21 09:17UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 18.74 167 27Bet Lib 15:17:00.3 -09:22:59 2.6 11.76 144 105Phi Vir 14:28:12.0 -02:13:41 4.8 2.41 157 PPM 197720 14:36:10.5 -03:46:52 8.4 0.33 155 12GU11 14:35:01.0 -03:55:59 14.0 155 Positions are for J2000
Event circumstances last updated at 2019/06/07 23:29:53 UT
Marc W. Buie, Southwest Research Institute