Event between (506439) 00YB2 and star GA1100:01260552 with event index number of 317531
Geocentric closest approach at 2020/01/06 07:17:59 UTC
J2000 position of star is 05:37:12.0 +20:18:51
Equinox of date position of star is 05:38:22.6 +20:19:29
Stellar brightness G=16.1,
use SENSEUP=128
Star is 35 degrees from the moon.
Moon is 78% illuminated.
TNO apparent brightness V=22.6
[RECON map]
TNO is 39.0 AU from the Sun
and 38.1 AU from the Earth.
The TNO is moving 23.6
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 226 seconds.
The 1-sigma cross-track error in the shadow position is
1737 km.
The sky-plane scale is
27626.3 km/arcsec.
The TNO has an absolute magnitude Hv=6.7
Diameter=275.4 km assuming a 5% albedo -- 11.6 sec chord
Diameter=112.4 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is CLASSICAL
Star training set for 506439, (2020/01/06 07:18UT) Object RA Dec mag sep mel Betelgeuse 05:56:15.4 +07:24:33 0.4 13.62 40 Alnath 05:27:33.5 +28:37:21 1.6 8.65 34 123Zet Tau 05:38:50.5 +21:09:11 3.0 0.83 35 PPM 094568 05:38:14.0 +20:44:21 8.5 0.42 35 PPM 094570 05:38:16.1 +20:22:12 9.8 0.05 35 506439 05:38:23.4 +20:19:30 16.1 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
4.0 sigma about the mid-time.
The median site spacing is 24.3 km
RECON observability=1.0 and success probability=1.7%
| 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 | 07:17:27 | -60.9 | Dark | Up | 58.8 | 200.4 | Up | 07:02:27 - 07:32:27 | -5042 |
| Kelowna | 07:17:27 | -61.2 | Dark | Up | 59.2 | 200.3 | Up | 07:02:27 - 07:32:27 | -5080 |
| Summerland | 07:17:28 | -61.4 | Dark | Up | 59.5 | 200.1 | Up | 07:02:28 - 07:32:28 | -5106 |
| Penticton | 07:17:27 | -61.5 | Dark | Up | 59.5 | 200.4 | Up | 07:02:27 - 07:32:27 | -5112 |
| Oliver | 07:17:27 | -61.8 | Dark | Up | 59.9 | 200.6 | Up | 07:02:27 - 07:32:27 | -5146 |
| Anarchist Mountain Observatory | 07:17:26 | -62.0 | Dark | Up | 60.0 | 201.0 | Up | 07:02:26 - 07:32:26 | -5162 |
| Tonasket | 07:17:26 | -62.3 | Dark | Up | 60.3 | 201.1 | Up | 07:02:26 - 07:32:26 | -5192 |
| Victoria | 07:17:38 | -61.3 | Dark | Up | 61.2 | 193.8 | Up | 07:02:38 - 07:32:38 | -5224 |
| Okanogan | 07:17:27 | -62.6 | Dark | Up | 60.6 | 201.0 | Up | 07:02:27 - 07:32:27 | -5226 |
| Brewster | 07:17:27 | -62.8 | Dark | Up | 60.9 | 200.8 | Up | 07:02:27 - 07:32:27 | -5253 |
| Manson/Chelan | 07:17:28 | -62.9 | Dark | Up | 61.2 | 200.3 | Up | 07:02:28 - 07:32:28 | -5275 |
| Entiat | 07:17:28 | -63.0 | Dark | Up | 61.4 | 200.3 | Up | 07:02:28 - 07:32:28 | -5297 |
| Wenatchee | 07:17:29 | -63.2 | Dark | Up | 61.7 | 200.3 | Up | 07:02:29 - 07:32:29 | -5323 |
| Ellensburg | 07:17:29 | -63.5 | Dark | Up | 62.1 | 200.1 | Up | 07:02:29 - 07:32:29 | -5364 |
| Yakima | 07:17:29 | -63.9 | Dark | Up | 62.5 | 200.4 | Up | 07:02:29 - 07:32:29 | -5405 |
| Toppenish/White Swan | 07:17:28 | -64.1 | Dark | Up | 62.7 | 200.8 | Up | 07:02:28 - 07:32:28 | -5426 |
| Pasco | 07:17:24 | -64.6 | Dark | Up | 62.5 | 203.4 | Up | 07:02:24 - 07:32:24 | -5432 |
| PNWRO | 07:17:23 | -64.9 | Dark | Up | 62.6 | 204.0 | Up | 07:02:23 - 07:32:23 | -5456 |
| Goldendale | 07:17:29 | -64.5 | Dark | Up | 63.3 | 200.4 | Up | 07:02:29 - 07:32:29 | -5482 |
| The Dalles | 07:17:30 | -64.6 | Dark | Up | 63.6 | 199.8 | Up | 07:02:30 - 07:32:30 | -5507 |
| Maupin | 07:17:29 | -65.0 | Dark | Up | 64.0 | 200.3 | Up | 07:02:29 - 07:32:29 | -5548 |
| Sisters | 07:17:30 | -65.6 | Dark | Up | 64.9 | 199.9 | Up | 07:02:30 - 07:32:30 | -5639 |
| Redmond | 07:17:29 | -65.7 | Dark | Up | 64.8 | 200.8 | Up | 07:02:29 - 07:32:29 | -5640 |
| Bend | 07:17:30 | -65.9 | Dark | Up | 65.1 | 200.6 | Up | 07:02:30 - 07:32:30 | -5662 |
| Oregon Observatory | 07:17:30 | -66.0 | Dark | Up | 65.3 | 200.5 | Up | 07:02:30 - 07:32:30 | -5680 |
| La Pine/Gilchrist | 07:17:30 | -66.1 | Dark | Up | 65.5 | 200.5 | Up | 07:02:30 - 07:32:30 | -5701 |
| North Lake | 07:17:28 | -66.7 | Dark | Up | 65.7 | 202.1 | Up | 07:02:28 - 07:32:28 | -5743 |
| Paisley | 07:17:26 | -67.3 | Dark | Up | 66.1 | 203.4 | Up | 07:02:26 - 07:32:26 | -5798 |
| Lakeview | 07:17:26 | -67.8 | Dark | Up | 66.5 | 204.3 | Up | 07:02:26 - 07:32:26 | -5849 |
| Klamath Falls | 07:17:30 | -67.2 | Dark | Up | 66.9 | 201.1 | Up | 07:02:30 - 07:32:30 | -5851 |
| Cedarville | 07:17:25 | -68.4 | Dark | Up | 67.1 | 205.3 | Up | 07:02:25 - 07:32:25 | -5916 |
| Niwot | 07:16:34 | -72.3 | Dark | Up | 60.9 | 234.6 | Up | 07:01:34 - 07:31:34 | -5939 |
| SwRI | 07:16:34 | -72.4 | Dark | Up | 61.0 | 234.6 | Up | 07:01:34 - 07:31:34 | -5951 |
| Fall River/Burney | 07:17:28 | -68.3 | Dark | Up | 67.9 | 203.0 | Up | 07:02:28 - 07:32:28 | -5971 |
| Susanville | 07:17:26 | -69.2 | Dark | Up | 68.2 | 205.4 | Up | 07:02:26 - 07:32:26 | -6033 |
| Gimple | 07:17:26 | -69.3 | Dark | Up | 68.6 | 205.2 | Up | 07:02:26 - 07:32:26 | -6063 |
| Greenville | 07:17:27 | -69.3 | Dark | Up | 68.6 | 205.0 | Up | 07:02:27 - 07:32:27 | -6063 |
| Quincy | 07:17:27 | -69.4 | Dark | Up | 68.8 | 205.2 | Up | 07:02:27 - 07:32:27 | -6085 |
| Portola | 07:17:25 | -69.7 | Dark | Up | 68.7 | 206.5 | Up | 07:02:25 - 07:32:25 | -6096 |
| Reno | 07:17:23 | -70.2 | Dark | Up | 68.7 | 208.3 | Up | 07:02:23 - 07:32:23 | -6120 |
| Carson City | 07:17:22 | -70.5 | Dark | Up | 69.0 | 208.8 | Up | 07:02:22 - 07:32:22 | -6158 |
| Yerington | 07:17:19 | -71.0 | Dark | Up | 69.0 | 210.6 | Up | 07:02:19 - 07:32:19 | -6175 |
| Gardnerville | 07:17:22 | -70.8 | Dark | Up | 69.2 | 209.2 | Up | 07:02:22 - 07:32:22 | -6183 |
| Hawthorne | 07:17:17 | -71.6 | Dark | Up | 69.2 | 212.4 | Up | 07:02:17 - 07:32:17 | -6221 |
| Tonopah | 07:17:12 | -72.6 | Dark | Up | 68.9 | 216.3 | Up | 07:02:12 - 07:32:12 | -6262 |
| Lee Vining | 07:17:19 | -71.8 | Dark | Up | 69.8 | 212.1 | Up | 07:02:19 - 07:32:19 | -6283 |
| Bishop | 07:17:16 | -72.7 | Dark | Up | 70.0 | 214.7 | Up | 07:02:16 - 07:32:16 | -6342 |
| Beatty | 07:17:10 | -73.7 | Dark | Up | 69.6 | 219.2 | Up | 07:02:10 - 07:32:10 | -6381 |
| Indian Springs | 07:17:06 | -74.4 | Dark | Up | 69.3 | 222.2 | Up | 07:02:06 - 07:32:06 | -6409 |
| Henderson | 07:17:03 | -75.2 | Dark | Up | 69.3 | 224.6 | Up | 07:02:03 - 07:32:03 | -6460 |
| Patrick | 07:16:59 | -76.1 | Dark | Up | 69.1 | 228.1 | Up | 07:01:59 - 07:31:59 | -6518 |
| Searchlight/Boulder City | 07:17:02 | -75.7 | Dark | Up | 69.7 | 225.8 | Up | 07:02:02 - 07:32:02 | -6521 |
| Kingman/Dolan Springs | 07:16:59 | -76.3 | Dark | Up | 69.4 | 228.1 | Up | 07:01:59 - 07:31:59 | -6543 |
| DCO | 07:16:56 | -76.6 | Dark | Up | 68.9 | 230.0 | Up | 07:01:56 - 07:31:56 | -6545 |
| Laughlin/Bullhead City | 07:17:01 | -76.1 | Dark | Up | 69.7 | 227.1 | Up | 07:02:01 - 07:32:01 | -6550 |
| CPSLO | 07:17:23 | -73.1 | Dark | Up | 72.7 | 212.3 | Up | 07:02:23 - 07:32:23 | -6573 |
| Mohave Valley | 07:17:01 | -76.3 | Dark | Up | 69.9 | 227.7 | Up | 07:02:01 - 07:32:01 | -6579 |
| Lake Havasu City | 07:17:00 | -76.8 | Dark | Up | 70.0 | 229.0 | Up | 07:02:00 - 07:32:00 | -6620 |
| Parker | 07:16:59 | -77.1 | Dark | Up | 70.2 | 229.8 | Up | 07:01:59 - 07:31:59 | -6657 |
| George/Scottsdale | 07:16:50 | -78.3 | Dark | Up | 68.9 | 235.3 | Up | 07:01:50 - 07:31:50 | -6682 |
| Wildwood | 07:17:15 | -75.1 | Dark | Up | 72.7 | 220.1 | Up | 07:02:15 - 07:32:15 | -6692 |
| Blythe | 07:17:00 | -77.5 | Dark | Up | 70.7 | 230.3 | Up | 07:02:00 - 07:32:00 | -6716 |
| Idyllwild | 07:17:09 | -76.4 | Dark | Up | 71.9 | 225.5 | Up | 07:02:09 - 07:32:09 | -6719 |
| Calipatria | 07:17:03 | -77.5 | Dark | Up | 71.6 | 229.5 | Up | 07:02:03 - 07:32:03 | -6776 |
| Yuma | 07:17:00 | -78.2 | Dark | Up | 71.3 | 232.3 | Up | 07:02:00 - 07:32:00 | -6816 |
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 506439, (2020/01/06 07:18UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 13.62 40 Alnath 05:26:17.5 +28:36:23 1.6 8.65 34 123Zet Tau 05:37:38.7 +21:08:33 3.0 0.83 35 PPM 094568 05:37:02.4 +20:43:42 8.5 0.42 35 PPM 094570 05:37:04.7 +20:21:33 9.8 0.05 35 506439 05:37:12.0 +20:18:51 16.1 35 Positions are for J2000
Event circumstances last updated at 2019/10/15 22:04:35 UT
Marc W. Buie, Southwest Research Institute