Event between (28978) Ixion and star GA0600:27538009 with event index number of 278553
Geocentric closest approach at 2020/07/12 04:47:00 UTC
J2000 position of star is 17:52:27.3 -29:49:45
Equinox of date position of star is 17:53:45.9 -29:49:57
Stellar brightness G=15.5,
use SENSEUP=128
Star is 103 degrees from the moon.
Moon is 58% illuminated.
TNO apparent brightness V=25.9
[RECON map]
TNO is 39.0 AU from the Sun
and 38.0 AU from the Earth.
The TNO is moving 22.8
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 219 seconds.
The 1-sigma cross-track error in the shadow position is
2214 km.
The sky-plane scale is
27573.5 km/arcsec.
The TNO has an absolute magnitude Hv=10.0
Diameter=1148.2 km assuming a 5% albedo -- 2.6 sec chord
Diameter=468.7 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is 3:2E
Star training set for 28978, (2020/07/12 04:47UT) Object RA Dec mag sep mel Antares 16:30:40.2 -26:28:33 0.9 18.59 121 34Ups Sco 17:32:09.7 -37:18:37 2.7 8.72 106 PPM 296839 17:50:30.6 -31:42:30 4.9 2.00 103 PPM 296917 17:53:30.8 -30:09:19 8.4 0.33 103 PPM 267409 17:52:43.6 -29:58:01 9.6 0.26 103 28978 17:53:46.1 -29:49:57 15.5 102 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
4.1 sigma about the mid-time.
The median site spacing is 9.7 km
RECON observability=0.3 and success probability=0.6%
| 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 | 04:48:16 | -6.0 | NT | Down | 7.0 | 158.5 | Really Low | 04:33:16 - 05:03:16 | 5737 |
| Kelowna | 04:48:16 | -6.2 | NT | Down | 7.3 | 158.3 | Really Low | 04:33:16 - 05:03:16 | 5725 |
| Peachland | 04:48:17 | -6.2 | NT | Down | 7.3 | 158.1 | Really Low | 04:33:17 - 05:03:17 | 5718 |
| Summerland | 04:48:17 | -6.3 | NT | Down | 7.5 | 158.2 | Really Low | 04:33:17 - 05:03:17 | 5716 |
| Penticton | 04:48:17 | -6.4 | NT | Down | 7.6 | 158.2 | Really Low | 04:33:17 - 05:03:17 | 5716 |
| Oliver | 04:48:18 | -6.7 | NT | Down | 7.9 | 158.2 | Really Low | 04:33:18 - 05:03:18 | 5707 |
| Anarchist Mountain Observatory | 04:48:17 | -6.9 | NT | Down | 8.1 | 158.4 | Really Low | 04:33:17 - 05:03:17 | 5707 |
| Tonasket | 04:48:18 | -7.1 | NT | Down | 8.4 | 158.3 | Really Low | 04:33:18 - 05:03:18 | 5697 |
| Okanogan | 04:48:19 | -7.3 | NT | Down | 8.6 | 158.2 | Really Low | 04:33:19 - 05:03:19 | 5686 |
| Brewster | 04:48:20 | -7.4 | NT | Down | 8.8 | 158.0 | Really Low | 04:33:20 - 05:03:20 | 5675 |
| Manson/Chelan | 04:48:21 | -7.3 | NT | Down | 8.9 | 157.7 | Really Low | 04:33:21 - 05:03:21 | 5664 |
| Entiat | 04:48:21 | -7.4 | NT | Down | 9.1 | 157.6 | Really Low | 04:33:21 - 05:03:21 | 5657 |
| Wenatchee | 04:48:23 | -7.6 | NT | Down | 9.3 | 157.5 | Really Low | 04:33:23 - 05:03:23 | 5648 |
| Pasco | 04:48:21 | -9.0 | NT | Down | 10.7 | 158.4 | Really Low | 04:33:21 - 05:03:21 | 5633 |
| Ellensburg | 04:48:24 | -7.8 | NT | Down | 9.7 | 157.3 | Really Low | 04:33:24 - 05:03:24 | 5632 |
| PNWRO | 04:48:20 | -9.3 | NT | Down | 11.0 | 158.6 | Really Low | 04:33:20 - 05:03:20 | 5629 |
| Victoria | 04:48:30 | -5.3 | CT | Down | 7.5 | 155.0 | Really Low | 04:33:30 - 05:03:30 | 5627 |
| Yakima | 04:48:24 | -8.0 | NT | Down | 10.0 | 157.3 | Really Low | 04:33:24 - 05:03:24 | 5620 |
| Toppenish/White Swan | 04:48:24 | -8.3 | NT | Down | 10.3 | 157.4 | Really Low | 04:33:24 - 05:03:24 | 5616 |
| Niwot | 04:47:41 | -20.1 | Dark | Down | 19.3 | 170.1 | Really Low | 04:32:41 - 05:02:41 | 5593 |
| Goldendale | 04:48:27 | -8.5 | NT | Down | 10.7 | 157.0 | Really Low | 04:33:27 - 05:03:27 | 5592 |
| SwRI | 04:47:41 | -20.1 | Dark | Down | 19.4 | 170.0 | Really Low | 04:32:41 - 05:02:41 | 5588 |
| The Dalles | 04:48:27 | -8.4 | NT | Down | 10.8 | 156.7 | Really Low | 04:33:27 - 05:03:27 | 5578 |
| Maupin | 04:48:28 | -8.8 | NT | Down | 11.2 | 156.7 | Really Low | 04:33:28 - 05:03:28 | 5567 |
| Redmond | 04:48:30 | -9.4 | NT | Down | 12.0 | 156.6 | Really Low | 04:33:30 - 05:03:30 | 5535 |
| Sisters | 04:48:31 | -9.1 | NT | Down | 11.9 | 156.3 | Really Low | 04:33:31 - 05:03:31 | 5529 |
| Bend | 04:48:31 | -9.4 | NT | Down | 12.2 | 156.5 | Really Low | 04:33:31 - 05:03:31 | 5525 |
| Oregon Observatory | 04:48:31 | -9.5 | NT | Down | 12.3 | 156.3 | Really Low | 04:33:31 - 05:03:31 | 5517 |
| La Pine/Gilchrist | 04:48:32 | -9.6 | NT | Down | 12.5 | 156.3 | Really Low | 04:33:32 - 05:03:32 | 5509 |
| North Lake | 04:48:31 | -10.2 | NT | Down | 13.0 | 156.7 | Really Low | 04:33:31 - 05:03:31 | 5504 |
| Paisley | 04:48:31 | -10.8 | NT | Down | 13.6 | 157.0 | Really Low | 04:33:31 - 05:03:31 | 5490 |
| Lakeview | 04:48:31 | -11.2 | NT | Down | 14.2 | 157.1 | Really Low | 04:33:31 - 05:03:31 | 5475 |
| Cedarville | 04:48:31 | -11.8 | NT | Down | 14.8 | 157.2 | Really Low | 04:33:31 - 05:03:31 | 5453 |
| Klamath Falls | 04:48:35 | -10.4 | NT | Down | 13.7 | 155.9 | Really Low | 04:33:35 - 05:03:35 | 5450 |
| Fall River/Burney | 04:48:35 | -11.5 | NT | Down | 14.9 | 156.1 | Really Low | 04:33:35 - 05:03:35 | 5411 |
| Susanville | 04:48:34 | -12.3 | AT | Down | 15.7 | 156.7 | Really Low | 04:33:34 - 05:03:34 | 5399 |
| Gimple | 04:48:35 | -12.4 | AT | Down | 15.9 | 156.5 | Really Low | 04:33:35 - 05:03:35 | 5384 |
| Greenville | 04:48:35 | -12.3 | AT | Down | 15.9 | 156.4 | Really Low | 04:33:35 - 05:03:35 | 5382 |
| Reno | 04:48:32 | -13.4 | AT | Down | 16.8 | 157.3 | Really Low | 04:33:32 - 05:03:32 | 5378 |
| Portola | 04:48:34 | -12.8 | AT | Down | 16.3 | 156.8 | Really Low | 04:33:34 - 05:03:34 | 5378 |
| Quincy | 04:48:36 | -12.5 | AT | Down | 16.1 | 156.4 | Really Low | 04:33:36 - 05:03:36 | 5374 |
| Yerington | 04:48:31 | -14.1 | AT | Down | 17.5 | 157.8 | Really Low | 04:33:31 - 05:03:31 | 5366 |
| Carson City | 04:48:33 | -13.6 | AT | Down | 17.1 | 157.2 | Really Low | 04:33:33 - 05:03:33 | 5363 |
| Tonopah | 04:48:25 | -15.8 | AT | Down | 18.9 | 159.3 | Really Low | 04:33:25 - 05:03:25 | 5359 |
| Hawthorne | 04:48:29 | -14.7 | AT | Down | 18.0 | 158.2 | Really Low | 04:33:29 - 05:03:29 | 5355 |
| Gardnerville | 04:48:33 | -13.8 | AT | Down | 17.3 | 157.3 | Really Low | 04:33:33 - 05:03:33 | 5354 |
| Lee Vining | 04:48:32 | -14.8 | AT | Down | 18.4 | 157.7 | Really Low | 04:33:32 - 05:03:32 | 5322 |
| Indian Springs | 04:48:21 | -17.7 | AT | Down | 20.7 | 160.4 | Low | 04:33:21 - 05:03:21 | 5316 |
| Beatty | 04:48:25 | -16.9 | AT | Down | 20.1 | 159.6 | Low | 04:33:25 - 05:03:25 | 5314 |
| Bishop | 04:48:30 | -15.7 | AT | Down | 19.2 | 158.2 | Really Low | 04:33:30 - 05:03:30 | 5307 |
| Henderson | 04:48:20 | -18.5 | Dark | Down | 21.4 | 161.0 | Low | 04:33:20 - 05:03:20 | 5302 |
| Patrick | 04:48:16 | -19.6 | Dark | Down | 22.3 | 161.9 | Low | 04:33:16 - 05:03:16 | 5289 |
| DCO | 04:48:14 | -20.2 | Dark | Down | 22.7 | 162.5 | Low | 04:33:14 - 05:03:14 | 5285 |
| Searchlight/Boulder City | 04:48:20 | -19.0 | Dark | Down | 21.9 | 161.0 | Low | 04:33:20 - 05:03:20 | 5276 |
| Kingman/Dolan Springs | 04:48:17 | -19.6 | Dark | Down | 22.4 | 161.7 | Low | 04:33:17 - 05:03:17 | 5275 |
| Laughlin/Bullhead City | 04:48:19 | -19.4 | Dark | Down | 22.3 | 161.2 | Low | 04:33:19 - 05:03:19 | 5266 |
| Mohave Valley | 04:48:19 | -19.6 | Dark | Down | 22.6 | 161.2 | Low | 04:33:19 - 05:03:19 | 5252 |
| Lake Havasu City | 04:48:19 | -20.0 | Dark | Down | 23.0 | 161.4 | Low | 04:33:19 - 05:03:19 | 5236 |
| George/Scottsdale | 04:48:10 | -21.9 | Dark | Down | 24.4 | 163.5 | Low | 04:33:10 - 05:03:10 | 5233 |
| Parker | 04:48:18 | -20.3 | Dark | Down | 23.4 | 161.4 | Low | 04:33:18 - 05:03:18 | 5219 |
| Blythe | 04:48:20 | -20.5 | Dark | Down | 23.8 | 161.0 | Low | 04:33:20 - 05:03:20 | 5188 |
| CPSLO | 04:48:40 | -15.8 | AT | Down | 20.4 | 156.0 | Low | 04:33:40 - 05:03:40 | 5165 |
| Idyllwild | 04:48:28 | -19.2 | Dark | Down | 23.1 | 159.2 | Low | 04:33:28 - 05:03:28 | 5160 |
| Calipatria | 04:48:24 | -20.3 | Dark | Down | 24.0 | 160.1 | Low | 04:33:24 - 05:03:24 | 5147 |
| Wildwood | 04:48:35 | -17.8 | AT | Down | 22.2 | 157.6 | Low | 04:33:35 - 05:03:34 | 5144 |
| Yuma | 04:48:21 | -21.1 | Dark | Down | 24.6 | 160.8 | Low | 04:33:21 - 05:03:21 | 5139 |
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 28978, (2020/07/12 04:47UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 18.59 121 34Ups Sco 17:30:45.8 -37:17:46 2.7 8.72 106 PPM 296839 17:49:10.5 -31:42:12 4.9 2.00 103 PPM 296917 17:52:11.7 -30:09:06 8.4 0.33 103 PPM 267409 17:51:24.6 -29:57:47 9.6 0.26 103 28978 17:52:27.3 -29:49:45 15.5 103 Positions are for J2000
Event circumstances last updated at 2020/06/21 04:51:28 UT
Marc W. Buie, Southwest Research Institute