Event between (523700) 14GM54 and star GA1120:08445774 with event index number of 324259
Geocentric closest approach at 2019/03/12 12:21:58 UTC
J2000 position of star is 19:24:55.7 +22:04:01
Equinox of date position of star is 19:25:44.8 +22:06:20
Stellar brightness G=15.7,
use SENSEUP=128
Star is 115 degrees from the moon.
Moon is 30% illuminated.
TNO apparent brightness V=21.6
[RECON map]
TNO is 26.6 AU from the Sun
and 27.0 AU from the Earth.
The TNO is moving 26.4
km/sec on the sky relative to the star, or,
4.8 arcsec/hr.
The 1-sigma error in the time of the event is 47 seconds.
The 1-sigma cross-track error in the shadow position is
1233 km.
The sky-plane scale is
19607.3 km/arcsec.
The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 8.7 sec chord
Diameter=93.5 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is 3:2E+6:4II
Star training set for 523700, (2019/03/12 12:22UT) Object RA Dec mag sep mel Vega 18:37:35.3 +38:48:09 0.0 19.62 113 Tarazed 19:47:10.3 +10:39:40 2.7 12.54 115 PPM 108817 19:21:43.5 +22:14:09 6.5 0.94 116 PPM 108951 19:25:31.3 +22:14:23 8.3 0.14 115 523700 19:25:45.0 +22:06:21 15.7 115 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 5.9 km
RECON observability=1.0 and success probability=16.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Summerland | 12:21:47 | -19.5 | Dark | Down | 38.6 | 101.6 | Up | 12:17:24 - 12:26:10 | 506 |
| Penticton | 12:21:46 | -19.5 | Dark | Down | 38.8 | 101.5 | Up | 12:17:23 - 12:26:09 | 492 |
| Kelowna | 12:21:48 | -19.3 | Dark | Down | 38.8 | 102.0 | Up | 12:17:25 - 12:26:11 | 491 |
| Okanagan Falls | 12:21:45 | -19.6 | Dark | Down | 38.8 | 101.4 | Up | 12:17:22 - 12:26:08 | 489 |
| Oliver | 12:21:44 | -19.6 | Dark | Down | 38.9 | 101.2 | Up | 12:17:21 - 12:26:07 | 485 |
| Manson/Chelan | 12:21:39 | -20.4 | Dark | Down | 38.7 | 99.7 | Up | 12:17:16 - 12:26:02 | 485 |
| Entiat | 12:21:38 | -20.5 | Dark | Down | 38.7 | 99.5 | Up | 12:17:15 - 12:26:01 | 484 |
| Ellensburg | 12:21:35 | -21.0 | Dark | Down | 38.6 | 98.7 | Up | 12:17:12 - 12:25:58 | 484 |
| Wenatchee | 12:21:37 | -20.7 | Dark | Down | 38.7 | 99.2 | Up | 12:17:14 - 12:26:00 | 483 |
| The Dalles | 12:21:28 | -21.9 | Dark | Down | 38.3 | 97.0 | Up | 12:17:05 - 12:25:51 | 481 |
| Yakima | 12:21:33 | -21.1 | Dark | Down | 38.6 | 98.3 | Up | 12:17:10 - 12:25:56 | 475 |
| Oroville | 12:21:43 | -19.6 | Dark | Down | 39.0 | 101.1 | Up | 12:17:20 - 12:26:06 | 475 |
| Brewster | 12:21:40 | -20.1 | Dark | Down | 38.9 | 100.2 | Up | 12:17:17 - 12:26:03 | 473 |
| Anarchist Mountain Observatory | 12:21:44 | -19.6 | Dark | Down | 39.0 | 101.3 | Up | 12:17:21 - 12:26:07 | 473 |
| Tonasket | 12:21:43 | -19.7 | Dark | Down | 39.0 | 101.0 | Up | 12:17:20 - 12:26:06 | 470 |
| Okanogan | 12:21:41 | -19.9 | Dark | Down | 39.0 | 100.6 | Up | 12:17:18 - 12:26:04 | 470 |
| Goldendale | 12:21:30 | -21.5 | Dark | Down | 38.5 | 97.5 | Up | 12:17:07 - 12:25:53 | 469 |
| Sisters | 12:21:23 | -22.5 | Dark | Down | 38.2 | 95.7 | Up | 12:17:00 - 12:25:46 | 467 |
| Maupin | 12:21:27 | -21.9 | Dark | Down | 38.4 | 96.8 | Up | 12:17:04 - 12:25:50 | 466 |
| Toppenish/White Swan | 12:21:32 | -21.1 | Dark | Down | 38.8 | 98.3 | Up | 12:17:09 - 12:25:55 | 463 |
| Madras/Culver | 12:21:25 | -22.1 | Dark | Down | 38.4 | 96.3 | Up | 12:17:02 - 12:25:48 | 454 |
| Oregon Observatory | 12:21:21 | -22.6 | Dark | Down | 38.3 | 95.5 | Up | 12:16:58 - 12:25:44 | 451 |
| Bend | 12:21:22 | -22.4 | Dark | Down | 38.4 | 95.7 | Up | 12:16:59 - 12:25:45 | 449 |
| La Pine/Gilchrist | 12:21:20 | -22.7 | Dark | Down | 38.3 | 95.2 | Up | 12:16:57 - 12:25:43 | 448 |
| Redmond | 12:21:23 | -22.3 | Dark | Down | 38.4 | 96.0 | Up | 12:17:00 - 12:25:46 | 448 |
| Chiloquin | 12:21:16 | -23.3 | Dark | Down | 38.1 | 94.1 | Up | 12:16:53 - 12:25:39 | 435 |
| Klamath Falls | 12:21:14 | -23.4 | Dark | Down | 38.2 | 93.9 | Up | 12:16:51 - 12:25:37 | 422 |
| North Lake | 12:21:19 | -22.4 | Dark | Down | 38.7 | 95.3 | Up | 12:16:56 - 12:25:42 | 407 |
| George/Umatilla | 12:21:31 | -20.5 | Dark | Down | 39.5 | 98.7 | Up | 12:17:08 - 12:25:54 | 403 |
| Pasco | 12:21:33 | -20.3 | Dark | Down | 39.6 | 99.2 | Up | 12:17:10 - 12:25:56 | 401 |
| Tulelake | 12:21:14 | -23.2 | Dark | Down | 38.4 | 93.9 | Up | 12:16:51 - 12:25:37 | 399 |
| PNWRO | 12:21:32 | -20.2 | Dark | Down | 39.8 | 99.2 | Up | 12:17:09 - 12:25:55 | 384 |
| Paisley | 12:21:17 | -22.3 | Dark | Down | 39.0 | 95.2 | Up | 12:16:54 - 12:25:40 | 375 |
| Fall River/Burney | 12:21:10 | -23.5 | Dark | Down | 38.5 | 93.2 | Up | 12:16:47 - 12:25:33 | 369 |
| Lakeview | 12:21:15 | -22.4 | Dark | Down | 39.2 | 94.9 | Up | 12:16:52 - 12:25:38 | 351 |
| Cedarville | 12:21:13 | -22.4 | Dark | Down | 39.4 | 94.5 | Up | 12:16:50 - 12:25:36 | 322 |
| Greenville | 12:21:07 | -23.4 | Dark | Down | 38.9 | 92.8 | Up | 12:16:44 - 12:25:30 | 318 |
| Gimple | 12:21:07 | -23.3 | Dark | Down | 38.9 | 92.8 | Up | 12:16:44 - 12:25:30 | 314 |
| Susanville | 12:21:08 | -23.1 | Dark | Down | 39.1 | 93.2 | Up | 12:16:45 - 12:25:31 | 312 |
| Quincy | 12:21:06 | -23.5 | Dark | Down | 38.9 | 92.6 | Up | 12:16:43 - 12:25:29 | 311 |
| Portola | 12:21:06 | -23.1 | Dark | Down | 39.3 | 92.8 | Up | 12:16:43 - 12:25:29 | 283 |
| Reno | 12:21:05 | -22.7 | Dark | Down | 39.8 | 93.1 | Up | 12:16:42 - 12:25:28 | 241 |
| Carson City | 12:21:03 | -22.8 | Dark | Down | 39.8 | 92.8 | Up | 12:16:40 - 12:25:26 | 228 |
| Gardnerville | 12:21:03 | -22.8 | Dark | Down | 39.8 | 92.6 | Up | 12:16:40 - 12:25:26 | 217 |
| Yerington | 12:21:03 | -22.4 | Dark | Down | 40.3 | 93.0 | Up | 12:16:40 - 12:25:26 | 188 |
| Lee Vining | 12:20:59 | -22.6 | Dark | Down | 40.4 | 92.2 | Up | 12:16:36 - 12:25:22 | 149 |
| Hawthorne | 12:21:02 | -22.1 | Dark | Down | 40.7 | 93.0 | Up | 12:16:39 - 12:25:25 | 144 |
| CPSLO | 12:20:47 | -24.5 | Dark | Down | 39.1 | 89.0 | Up | 12:16:24 - 12:25:10 | 132 |
| Bishop | 12:20:57 | -22.2 | Dark | Down | 41.0 | 92.1 | Up | 12:16:34 - 12:25:20 | 88 |
| Tonopah | 12:21:01 | -21.1 | Dark | Down | 41.9 | 93.5 | Up | 12:16:38 - 12:25:24 | 51 |
| Lone Pine | 12:20:55 | -22.1 | Dark | Down | 41.2 | 91.6 | Up | 12:16:32 - 12:25:18 | 41 |
| Beatty | 12:20:57 | -21.0 | Dark | Down | 42.3 | 92.7 | Up | 12:16:34 - 12:25:20 | -19 |
| Wildwood | 12:20:44 | -23.2 | Dark | Down | 40.8 | 89.1 | Up | 12:16:21 - 12:25:07 | -30 |
| Indian Springs | 12:20:57 | -20.3 | Dark | Down | 43.2 | 93.1 | Up | 12:16:34 - 12:25:20 | -92 |
| Idyllwild | 12:20:44 | -21.7 | Dark | Down | 42.3 | 89.8 | Up | 12:16:21 - 12:25:07 | -152 |
| Henderson | 12:20:55 | -19.8 | Dark | Down | 43.7 | 93.1 | Up | 12:16:32 - 12:25:18 | -153 |
| Searchlight/Boulder City | 12:20:53 | -19.9 | Dark | Down | 43.8 | 92.5 | Up | 12:16:30 - 12:25:16 | -180 |
| Laughlin/Bullhead City | 12:20:52 | -19.7 | Dark | Down | 44.1 | 92.5 | Up | 12:16:29 - 12:25:15 | -213 |
| Mohave Valley | 12:20:51 | -19.7 | Dark | Down | 44.1 | 92.2 | Up | 12:16:28 - 12:25:14 | -225 |
| Kingman/Dolan Springs | 12:20:53 | -19.2 | Dark | Down | 44.5 | 92.8 | Up | 12:16:30 - 12:25:16 | -242 |
| Patrick | 12:20:54 | -19.0 | Dark | Down | 44.7 | 93.1 | Up | 12:16:31 - 12:25:17 | -244 |
| Calipatria | 12:20:43 | -20.8 | Dark | Down | 43.3 | 89.9 | Up | 12:16:20 - 12:25:06 | -248 |
| Lake Havasu City | 12:20:50 | -19.6 | Dark | Down | 44.3 | 92.0 | Up | 12:16:27 - 12:25:13 | -257 |
| Parker | 12:20:48 | -19.6 | Dark | Down | 44.4 | 91.6 | Up | 12:16:25 - 12:25:11 | -275 |
| Blythe | 12:20:46 | -20.0 | Dark | Down | 44.1 | 90.9 | Up | 12:16:23 - 12:25:09 | -281 |
| DCO | 12:20:53 | -18.5 | Dark | Down | 45.3 | 93.3 | Up | 12:16:30 - 12:25:16 | -298 |
| Yuma | 12:20:42 | -20.2 | Dark | Down | 44.1 | 90.0 | Up | 12:16:19 - 12:25:05 | -320 |
| SwRI | 12:21:22 | -11.6 | NT | Down | 50.8 | 104.6 | Up | 12:16:59 - 12:25:45 | -541 |
| Niwot | 12:21:22 | -11.5 | NT | Down | 50.8 | 104.9 | Up | 12:16:59 - 12:25:45 | -542 |
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 523700, (2019/03/12 12:22UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 19.62 113 Tarazed 19:46:15.6 +10:36:48 2.7 12.54 115 PPM 108817 19:20:54.3 +22:11:55 6.5 0.94 116 PPM 108951 19:24:42.1 +22:12:04 8.3 0.14 115 523700 19:24:55.7 +22:04:01 15.7 115 Positions are for J2000
Event circumstances last updated at 2019/02/12 06:41:29 UT
Marc W. Buie, Southwest Research Institute