Event between (505679) 14WT69 and star GA1120:00383547 with event index number of 322652
Geocentric closest approach at 2019/12/28 05:04:28 UTC
J2000 position of star is 03:15:50.8 +23:53:33
Equinox of date position of star is 03:16:59.3 +23:57:48
Stellar brightness G=15.4,
use SENSEUP=128
Star is 113 degrees from the moon.
Moon is 4% illuminated.
TNO apparent brightness V=22.4
[RECON map]
TNO is 46.5 AU from the Sun
and 45.8 AU from the Earth.
The TNO is moving 18.0
km/sec on the sky relative to the star, or,
2.0 arcsec/hr.
The 1-sigma error in the time of the event is 379 seconds.
The 1-sigma cross-track error in the shadow position is
2831 km.
The sky-plane scale is
33188.7 km/arcsec.
The TNO has an absolute magnitude Hv=5.7
Diameter=436.5 km assuming a 5% albedo -- 24.2 sec chord
Diameter=178.2 km assuming a 30% albedo -- 9.9 sec chord
Dynamical classification is SCATNEAR
Star training set for 505679, (2019/12/28 05:04UT) Object RA Dec mag sep mel Aldebaran 04:37:04.2 +16:32:52 0.8 20.16 129 44Zet Per 03:55:23.6 +31:56:29 2.8 11.63 123 64 Ari 03:25:29.6 +24:47:36 5.5 2.10 115 PPM 092371 03:19:30.5 +24:09:13 8.1 0.60 114 PPM 092326 03:16:47.2 +23:41:12 9.7 0.28 113 PPM 092344 03:17:47.7 +23:50:10 10.6 0.22 113 505679 03:17:01.3 +23:57:55 15.4 113 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
2.4 sigma about the mid-time.
The median site spacing is 21.3 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) |
| Kelowna | 05:03:11 | -46.8 | Dark | Down | 63.8 | 188.0 | Up | 04:48:11 - 05:18:11 | -796 |
| Summerland | 05:03:13 | -46.7 | Dark | Down | 64.1 | 187.5 | Up | 04:48:13 - 05:18:13 | -816 |
| Penticton | 05:03:13 | -46.8 | Dark | Down | 64.2 | 187.7 | Up | 04:48:13 - 05:18:13 | -825 |
| Okanagan Falls | 05:03:13 | -46.9 | Dark | Down | 64.4 | 187.7 | Up | 04:48:13 - 05:18:13 | -842 |
| Oliver | 05:03:13 | -46.9 | Dark | Down | 64.5 | 187.8 | Up | 04:48:13 - 05:18:13 | -858 |
| Anarchist Mountain Observatory | 05:03:13 | -47.1 | Dark | Down | 64.7 | 188.3 | Up | 04:48:13 - 05:18:13 | -880 |
| Oroville | 05:03:14 | -47.1 | Dark | Down | 64.8 | 188.2 | Up | 04:48:14 - 05:18:14 | -885 |
| Tonasket | 05:03:14 | -47.2 | Dark | Down | 65.0 | 188.2 | Up | 04:48:14 - 05:18:14 | -907 |
| Okanogan | 05:03:15 | -47.2 | Dark | Down | 65.4 | 188.0 | Up | 04:48:15 - 05:18:15 | -934 |
| Brewster | 05:03:16 | -47.2 | Dark | Down | 65.6 | 187.7 | Up | 04:48:16 - 05:18:16 | -954 |
| Manson/Chelan | 05:03:18 | -47.0 | Dark | Down | 65.9 | 186.9 | Up | 04:48:18 - 05:18:18 | -964 |
| Entiat | 05:03:19 | -47.1 | Dark | Down | 66.1 | 186.8 | Up | 04:48:19 - 05:18:19 | -982 |
| Wenatchee | 05:03:20 | -47.1 | Dark | Down | 66.4 | 186.7 | Up | 04:48:20 - 05:18:20 | -1004 |
| Ellensburg | 05:03:22 | -47.1 | Dark | Down | 66.8 | 186.3 | Up | 04:48:22 - 05:18:22 | -1036 |
| Yakima | 05:03:23 | -47.2 | Dark | Down | 67.2 | 186.4 | Up | 04:48:23 - 05:18:23 | -1075 |
| Toppenish/White Swan | 05:03:22 | -47.3 | Dark | Down | 67.4 | 186.9 | Up | 04:48:22 - 05:18:22 | -1100 |
| Goldendale | 05:03:25 | -47.2 | Dark | Down | 68.0 | 186.0 | Up | 04:48:25 - 05:18:25 | -1140 |
| Pasco | 05:03:18 | -48.2 | Dark | Down | 67.4 | 189.9 | Up | 04:48:18 - 05:18:18 | -1149 |
| The Dalles | 05:03:27 | -47.0 | Dark | Down | 68.2 | 185.2 | Up | 04:48:27 - 05:18:27 | -1151 |
| George/Umatilla | 05:03:19 | -48.2 | Dark | Down | 67.7 | 189.5 | Up | 04:48:19 - 05:18:19 | -1175 |
| PNWRO | 05:03:17 | -48.4 | Dark | Down | 67.6 | 190.5 | Up | 04:48:17 - 05:18:17 | -1180 |
| Maupin | 05:03:27 | -47.2 | Dark | Down | 68.6 | 185.5 | Up | 04:48:27 - 05:18:27 | -1194 |
| Madras/Culver | 05:03:29 | -47.3 | Dark | Down | 69.2 | 185.6 | Up | 04:48:29 - 05:18:29 | -1245 |
| Sisters | 05:03:31 | -47.1 | Dark | Down | 69.5 | 184.5 | Up | 04:48:31 - 05:18:31 | -1263 |
| Redmond | 05:03:30 | -47.4 | Dark | Down | 69.5 | 185.6 | Up | 04:48:30 - 05:18:30 | -1278 |
| Bend | 05:03:31 | -47.4 | Dark | Down | 69.8 | 185.3 | Up | 04:48:31 - 05:18:31 | -1294 |
| Oregon Observatory | 05:03:32 | -47.3 | Dark | Down | 69.9 | 185.0 | Up | 04:48:32 - 05:18:32 | -1307 |
| La Pine/Gilchrist | 05:03:33 | -47.3 | Dark | Down | 70.2 | 184.9 | Up | 04:48:33 - 05:18:33 | -1325 |
| North Lake | 05:03:31 | -47.8 | Dark | Down | 70.5 | 186.6 | Up | 04:48:31 - 05:18:31 | -1386 |
| Chiloquin | 05:03:37 | -47.3 | Dark | Down | 71.3 | 184.2 | Up | 04:48:37 - 05:18:37 | -1421 |
| Paisley | 05:03:30 | -48.2 | Dark | Down | 71.1 | 187.8 | Up | 04:48:30 - 05:18:30 | -1451 |
| Klamath Falls | 05:03:37 | -47.4 | Dark | Down | 71.6 | 184.5 | Up | 04:48:37 - 05:18:37 | -1457 |
| Tulelake | 05:03:36 | -47.7 | Dark | Down | 71.9 | 185.4 | Up | 04:48:36 - 05:18:36 | -1493 |
| Lakeview | 05:03:31 | -48.5 | Dark | Down | 71.5 | 188.6 | Up | 04:48:31 - 05:18:31 | -1507 |
| Cedarville | 05:03:31 | -48.7 | Dark | Down | 72.2 | 189.4 | Up | 04:48:31 - 05:18:31 | -1577 |
| Fall River/Burney | 05:03:38 | -48.0 | Dark | Down | 72.8 | 186.0 | Up | 04:48:38 - 05:18:38 | -1585 |
| Susanville | 05:03:36 | -48.6 | Dark | Down | 73.3 | 188.5 | Up | 04:48:36 - 05:18:36 | -1671 |
| Greenville | 05:03:38 | -48.5 | Dark | Down | 73.6 | 187.8 | Up | 04:48:38 - 05:18:38 | -1689 |
| Gimple | 05:03:37 | -48.5 | Dark | Down | 73.6 | 188.0 | Up | 04:48:37 - 05:18:37 | -1692 |
| Quincy | 05:03:38 | -48.5 | Dark | Down | 73.8 | 187.9 | Up | 04:48:38 - 05:18:38 | -1709 |
| Portola | 05:03:36 | -48.9 | Dark | Down | 73.9 | 189.5 | Up | 04:48:36 - 05:18:36 | -1737 |
| Reno | 05:03:35 | -49.4 | Dark | Down | 74.1 | 191.7 | Up | 04:48:35 - 05:18:35 | -1785 |
| Carson City | 05:03:35 | -49.5 | Dark | Down | 74.4 | 192.1 | Up | 04:48:35 - 05:18:35 | -1821 |
| Gardnerville | 05:03:35 | -49.6 | Dark | Down | 74.6 | 192.4 | Up | 04:48:35 - 05:18:35 | -1847 |
| Yerington | 05:03:32 | -50.0 | Dark | Down | 74.5 | 194.3 | Up | 04:48:32 - 05:18:32 | -1862 |
| Hawthorne | 05:03:31 | -50.5 | Dark | Down | 74.8 | 196.5 | Up | 04:48:31 - 05:18:31 | -1925 |
| Lee Vining | 05:03:35 | -50.2 | Dark | Down | 75.5 | 195.5 | Up | 04:48:35 - 05:18:35 | -1966 |
| Tonopah | 05:03:26 | -51.6 | Dark | Down | 74.9 | 201.8 | Up | 04:48:26 - 05:18:26 | -2018 |
| Bishop | 05:03:32 | -50.8 | Dark | Down | 75.9 | 198.7 | Up | 04:48:32 - 05:18:32 | -2050 |
| Lone Pine | 05:03:33 | -51.2 | Dark | Down | 76.5 | 201.0 | Up | 04:48:33 - 05:18:33 | -2138 |
| Niwot | 05:02:30 | -59.8 | Dark | Down | 67.9 | 228.2 | Up | 04:47:30 - 05:17:30 | -2139 |
| SwRI | 05:02:31 | -59.8 | Dark | Down | 68.0 | 228.2 | Up | 04:47:31 - 05:17:31 | -2148 |
| Beatty | 05:03:26 | -52.2 | Dark | Down | 75.8 | 205.1 | Up | 04:48:26 - 05:18:26 | -2150 |
| CPSLO | 05:03:47 | -49.3 | Dark | Down | 78.3 | 192.4 | Up | 04:48:47 - 05:18:47 | -2181 |
| Indian Springs | 05:03:25 | -53.1 | Dark | Down | 75.7 | 209.4 | Up | 04:48:25 - 05:18:25 | -2219 |
| Henderson | 05:03:20 | -53.7 | Dark | Down | 75.9 | 212.7 | Up | 04:48:20 - 05:18:20 | -2294 |
| Searchlight/Boulder City | 05:03:25 | -53.9 | Dark | Down | 76.4 | 214.3 | Up | 04:48:25 - 05:18:25 | -2357 |
| Wildwood | 05:03:41 | -51.1 | Dark | Down | 79.0 | 203.3 | Up | 04:48:41 - 05:18:41 | -2375 |
| Patrick | 05:03:16 | -54.7 | Dark | Down | 75.9 | 217.7 | Up | 04:48:16 - 05:18:16 | -2394 |
| Laughlin/Bullhead City | 05:03:19 | -54.2 | Dark | Down | 76.4 | 216.1 | Up | 04:48:19 - 05:18:19 | -2397 |
| Kingman/Dolan Springs | 05:03:17 | -54.6 | Dark | Down | 76.2 | 217.7 | Up | 04:48:17 - 05:18:17 | -2411 |
| Mohave Valley | 05:03:21 | -54.2 | Dark | Down | 76.7 | 216.8 | Up | 04:48:21 - 05:18:21 | -2425 |
| DCO | 05:03:13 | -55.3 | Dark | Down | 75.8 | 220.6 | Up | 04:48:13 - 05:18:13 | -2447 |
| Lake Havasu City | 05:03:20 | -54.5 | Dark | Down | 76.8 | 218.6 | Up | 04:48:20 - 05:18:20 | -2475 |
| Idyllwild | 05:03:32 | -52.6 | Dark | Down | 78.6 | 212.1 | Up | 04:48:32 - 05:18:32 | -2476 |
| Parker | 05:03:25 | -54.6 | Dark | Down | 77.1 | 219.8 | Up | 04:48:25 - 05:18:25 | -2514 |
| Blythe | 05:03:25 | -54.4 | Dark | Down | 77.7 | 220.3 | Up | 04:48:25 - 05:18:25 | -2557 |
| Calipatria | 05:03:28 | -53.7 | Dark | Down | 78.5 | 218.4 | Up | 04:48:28 - 05:18:28 | -2577 |
| Yuma | 05:03:25 | -54.5 | Dark | Down | 78.4 | 223.0 | Up | 04:48:25 - 05:18:25 | -2651 |
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 505679, (2019/12/28 05:04UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 20.16 129 44Zet Per 03:54:07.9 +31:53:01 2.8 11.63 123 64 Ari 03:24:18.5 +24:43:26 5.5 2.10 115 PPM 092371 03:18:19.9 +24:04:54 8.1 0.60 114 PPM 092326 03:15:36.9 +23:36:50 9.7 0.28 113 PPM 092344 03:16:37.3 +23:45:49 10.6 0.22 113 505679 03:15:50.8 +23:53:33 15.4 113 Positions are for J2000
Event circumstances last updated at 2019/06/07 23:04:57 UT
Marc W. Buie, Southwest Research Institute