Event between (535229) 14YG50 and star GA1140:02942103 with event index number of 1618311
Geocentric closest approach at 2019/09/21 11:15:18 UTC
J2000 position of star is 07:49:02.0 +24:45:17
Equinox of date position of star is 07:50:13.3 +24:42:15
Stellar brightness G=15.6,
use SENSEUP=128
Star is 35 degrees from the moon.
Moon is 57% illuminated.
TNO apparent brightness V=22.8
[RECON map]
TNO is 34.5 AU from the Sun
and 35.0 AU from the Earth.
The TNO is moving 17.9
km/sec on the sky relative to the star, or,
2.5 arcsec/hr.
The 1-sigma error in the time of the event is 196 seconds.
The 1-sigma cross-track error in the shadow position is
2243 km.
The sky-plane scale is
25364.6 km/arcsec.
The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 12.2 sec chord
Diameter=89.3 km assuming a 30% albedo -- 5.0 sec chord
Dynamical classification is 3:2E
Star training set for 535229, (2019/09/21 11:15UT) Object RA Dec mag sep mel Pollux 07:46:31.2 +27:58:37 1.1 3.38 34 77Kap Gem 07:45:38.1 +24:20:57 3.6 1.10 34 PPM 098001 07:50:29.9 +24:26:17 7.6 0.27 35 PPM 097995 07:50:21.9 +24:27:06 10.9 0.25 35 535229 07:50:13.5 +24:42:15 15.6 35 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
4.6 sigma about the mid-time.
The median site spacing is 21.5 km
RECON observability=1.0 and success probability=22.6%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Clarence Fulton | 11:11:09 | -23.6 | Dark | Up | 32.2 | 89.0 | Up | 10:56:09 - 11:26:09 | 438 |
| Kelowna | 11:11:07 | -23.9 | Dark | Up | 32.1 | 88.6 | Up | 10:56:07 - 11:26:07 | 407 |
| Summerland | 11:11:06 | -24.1 | Dark | Up | 31.9 | 88.3 | Up | 10:56:06 - 11:26:06 | 387 |
| Penticton | 11:11:06 | -24.1 | Dark | Up | 32.0 | 88.4 | Up | 10:56:06 - 11:26:06 | 379 |
| Okanagan Falls | 11:11:05 | -24.2 | Dark | Up | 32.0 | 88.2 | Up | 10:56:05 - 11:26:05 | 362 |
| Oliver | 11:11:05 | -24.3 | Dark | Up | 32.0 | 88.1 | Up | 10:56:05 - 11:26:05 | 347 |
| Anarchist Mountain Observatory | 11:11:04 | -24.3 | Dark | Up | 32.1 | 88.2 | Up | 10:56:04 - 11:26:04 | 326 |
| Oroville | 11:11:04 | -24.4 | Dark | Up | 32.0 | 88.1 | Up | 10:56:04 - 11:26:04 | 321 |
| Tonasket | 11:11:03 | -24.5 | Dark | Up | 32.0 | 87.9 | Up | 10:56:03 - 11:26:03 | 300 |
| Okanogan | 11:11:02 | -24.7 | Dark | Up | 31.9 | 87.6 | Up | 10:56:02 - 11:26:02 | 272 |
| Brewster | 11:11:00 | -25.0 | Dark | Up | 31.8 | 87.3 | Up | 10:56:00 - 11:26:00 | 252 |
| Manson/Chelan | 11:10:59 | -25.3 | Dark | Up | 31.5 | 86.9 | Up | 10:55:59 - 11:25:59 | 242 |
| Entiat | 11:10:58 | -25.5 | Dark | Up | 31.4 | 86.7 | Up | 10:55:58 - 11:25:58 | 223 |
| Wenatchee | 11:10:57 | -25.7 | Dark | Up | 31.4 | 86.5 | Up | 10:55:57 - 11:25:57 | 202 |
| Ellensburg | 11:10:55 | -26.0 | Dark | Up | 31.2 | 86.1 | Up | 10:55:55 - 11:25:55 | 169 |
| Yakima | 11:10:54 | -26.3 | Dark | Up | 31.1 | 85.8 | Up | 10:55:54 - 11:25:54 | 132 |
| Toppenish/White Swan | 11:10:53 | -26.3 | Dark | Up | 31.2 | 85.8 | Up | 10:55:53 - 11:25:53 | 107 |
| Goldendale | 11:10:51 | -26.9 | Dark | Up | 30.9 | 85.2 | Up | 10:55:51 - 11:25:51 | 66 |
| Pasco | 11:10:55 | -25.6 | Dark | Up | 32.1 | 86.6 | Up | 10:55:55 - 11:25:55 | 64 |
| The Dalles | 11:10:49 | -27.2 | Dark | Up | 30.6 | 84.8 | Up | 10:55:49 - 11:25:49 | 55 |
| PNWRO | 11:10:55 | -25.6 | Dark | Up | 32.3 | 86.6 | Up | 10:55:55 - 11:25:55 | 35 |
| Maupin | 11:10:48 | -27.4 | Dark | Up | 30.6 | 84.6 | Up | 10:55:48 - 11:25:48 | 13 |
| Madras/Culver | 11:10:46 | -27.7 | Dark | Up | 30.6 | 84.2 | Up | 10:55:46 - 11:25:46 | -38 |
| Sisters | 11:10:45 | -28.1 | Dark | Up | 30.2 | 83.7 | Up | 10:55:45 - 11:25:45 | -57 |
| Redmond | 11:10:45 | -27.9 | Dark | Up | 30.5 | 84.0 | Up | 10:55:45 - 11:25:45 | -70 |
| Bend | 11:10:44 | -28.1 | Dark | Up | 30.4 | 83.8 | Up | 10:55:44 - 11:25:44 | -87 |
| Oregon Observatory | 11:10:43 | -28.3 | Dark | Up | 30.2 | 83.6 | Up | 10:55:43 - 11:25:43 | -100 |
| La Pine/Gilchrist | 11:10:43 | -28.4 | Dark | Up | 30.2 | 83.4 | Up | 10:55:43 - 11:25:43 | -118 |
| North Lake | 11:10:42 | -28.3 | Dark | Up | 30.6 | 83.6 | Up | 10:55:42 - 11:25:42 | -175 |
| Chiloquin | 11:10:39 | -29.3 | Dark | Up | 29.8 | 82.5 | Low | 10:55:39 - 11:25:39 | -214 |
| Paisley | 11:10:41 | -28.4 | Dark | Up | 30.7 | 83.5 | Up | 10:55:41 - 11:25:41 | -238 |
| Klamath Falls | 11:10:38 | -29.4 | Dark | Up | 29.8 | 82.4 | Low | 10:55:38 - 11:25:38 | -249 |
| Tulelake | 11:10:37 | -29.4 | Dark | Up | 30.0 | 82.4 | Low | 10:55:37 - 11:25:37 | -283 |
| Lakeview | 11:10:40 | -28.5 | Dark | Up | 30.8 | 83.3 | Up | 10:55:40 - 11:25:40 | -292 |
| Cedarville | 11:10:38 | -28.7 | Dark | Up | 30.9 | 83.0 | Up | 10:55:38 - 11:25:38 | -360 |
| Fall River/Burney | 11:10:35 | -29.8 | Dark | Up | 29.9 | 82.0 | Low | 10:55:35 - 11:25:35 | -373 |
| Susanville | 11:10:34 | -29.6 | Dark | Up | 30.4 | 82.0 | Up | 10:55:34 - 11:25:34 | -455 |
| Greenville | 11:10:33 | -30.0 | Dark | Up | 30.1 | 81.7 | Up | 10:55:33 - 11:25:33 | -474 |
| Gimple | 11:10:33 | -29.9 | Dark | Up | 30.2 | 81.7 | Up | 10:55:33 - 11:25:33 | -477 |
| Quincy | 11:10:32 | -30.1 | Dark | Up | 30.1 | 81.6 | Up | 10:55:32 - 11:25:32 | -494 |
| Portola | 11:10:33 | -29.8 | Dark | Up | 30.4 | 81.8 | Up | 10:55:33 - 11:25:33 | -520 |
| Reno | 11:10:33 | -29.5 | Dark | Up | 30.9 | 82.0 | Up | 10:55:33 - 11:25:33 | -564 |
| Carson City | 11:10:33 | -29.7 | Dark | Up | 30.8 | 81.8 | Up | 10:55:33 - 11:25:33 | -600 |
| Gardnerville | 11:10:32 | -29.7 | Dark | Up | 30.8 | 81.7 | Up | 10:55:32 - 11:25:32 | -625 |
| Yerington | 11:10:33 | -29.3 | Dark | Up | 31.3 | 82.0 | Up | 10:55:33 - 11:25:33 | -637 |
| Hawthorne | 11:10:33 | -29.2 | Dark | Up | 31.6 | 82.1 | Up | 10:55:33 - 11:25:33 | -698 |
| Lee Vining | 11:10:31 | -29.8 | Dark | Up | 31.2 | 81.4 | Up | 10:55:31 - 11:25:31 | -740 |
| Tonopah | 11:10:35 | -28.4 | Dark | Up | 32.7 | 82.6 | Up | 10:55:35 - 11:25:35 | -783 |
| Bishop | 11:10:31 | -29.5 | Dark | Up | 31.6 | 81.5 | Up | 10:55:31 - 11:25:31 | -820 |
| Niwot | 11:11:12 | -18.8 | Dark | Up | 42.2 | 91.5 | Up | 10:56:12 - 11:26:12 | -857 |
| SwRI | 11:11:11 | -18.9 | Dark | Up | 42.2 | 91.3 | Up | 10:56:11 - 11:26:11 | -866 |
| Lone Pine | 11:10:29 | -29.6 | Dark | Up | 31.8 | 81.2 | Up | 10:55:29 - 11:25:29 | -906 |
| Beatty | 11:10:33 | -28.6 | Dark | Up | 32.9 | 82.1 | Up | 10:55:33 - 11:25:33 | -912 |
| CPSLO | 11:10:21 | -32.1 | Dark | Up | 29.5 | 79.1 | Low | 10:55:21 - 11:25:21 | -962 |
| Indian Springs | 11:10:35 | -27.9 | Dark | Up | 33.7 | 82.4 | Up | 10:55:35 - 11:25:35 | -975 |
| Henderson | 11:10:36 | -27.6 | Dark | Up | 34.2 | 82.4 | Up | 10:55:36 - 11:25:36 | -1048 |
| Searchlight/Boulder City | 11:10:34 | -27.8 | Dark | Up | 34.2 | 82.1 | Up | 10:55:34 - 11:25:34 | -1108 |
| Patrick | 11:10:37 | -27.0 | Dark | Up | 35.0 | 82.6 | Up | 10:55:37 - 11:25:37 | -1142 |
| Wildwood | 11:10:22 | -31.2 | Dark | Up | 30.9 | 79.4 | Up | 10:55:22 - 11:25:22 | -1145 |
| Laughlin/Bullhead City | 11:10:35 | -27.6 | Dark | Up | 34.4 | 82.0 | Up | 10:55:35 - 11:25:35 | -1148 |
| Kingman/Dolan Springs | 11:10:36 | -27.2 | Dark | Up | 34.8 | 82.3 | Up | 10:55:36 - 11:25:36 | -1160 |
| Mohave Valley | 11:10:33 | -27.8 | Dark | Up | 34.4 | 81.9 | Up | 10:55:33 - 11:25:33 | -1176 |
| DCO | 11:10:38 | -26.6 | Dark | Up | 35.6 | 82.7 | Up | 10:55:38 - 11:25:38 | -1192 |
| Lake Havasu City | 11:10:33 | -27.7 | Dark | Up | 34.5 | 81.7 | Up | 10:55:33 - 11:25:33 | -1224 |
| Idyllwild | 11:10:26 | -29.9 | Dark | Up | 32.4 | 80.1 | Up | 10:55:26 - 11:25:26 | -1236 |
| Parker | 11:10:33 | -27.8 | Dark | Up | 34.5 | 81.5 | Up | 10:55:33 - 11:25:33 | -1261 |
| Blythe | 11:10:31 | -28.3 | Dark | Up | 34.1 | 81.0 | Up | 10:55:31 - 11:25:31 | -1307 |
| Calipatria | 11:10:28 | -29.2 | Dark | Up | 33.3 | 80.2 | Up | 10:55:28 - 11:25:28 | -1332 |
| George/Scottsdale | 11:10:38 | -26.1 | Dark | Up | 36.4 | 82.4 | Up | 10:55:38 - 11:25:38 | -1370 |
| Yuma | 11:10:29 | -28.6 | Dark | Up | 34.0 | 80.3 | Up | 10:55:29 - 11:25:29 | -1402 |
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 535229, (2019/09/21 11:15UT) Object RA Dec mag sep mel Pollux 07:45:18.0 +28:01:33 1.1 3.38 34 77Kap Gem 07:44:26.8 +24:23:52 3.6 1.10 34 PPM 098001 07:49:18.7 +24:29:19 7.6 0.27 35 PPM 097995 07:49:10.6 +24:30:08 10.9 0.25 35 535229 07:49:02.0 +24:45:17 15.6 35 Positions are for J2000
Event circumstances last updated at 2019/09/02 14:31:08 UT
Marc W. Buie, Southwest Research Institute