Event between (28978) Ixion and star GA0600:28443981 with event index number of 272405
Geocentric closest approach at 2020/06/17 07:23:45 UTC
J2000 position of star is 17:54:52.8 -29:48:50
Equinox of date position of star is 17:56:07.4 -29:48:58
Stellar brightness G=16.8,
use SENSEUP=128
Star is 131 degrees from the moon.
Moon is 15% illuminated.
TNO apparent brightness V=19.5
[RECON map]
TNO is 39.0 AU from the Sun
and 38.0 AU from the Earth.
The TNO is moving 24.9
km/sec on the sky relative to the star, or,
3.3 arcsec/hr.
The 1-sigma error in the time of the event is 231 seconds.
The 1-sigma cross-track error in the shadow position is
2423 km.
The sky-plane scale is
27536.3 km/arcsec.
The TNO has an absolute magnitude Hv=3.6
Diameter=1148.2 km assuming a 5% albedo -- 46.1 sec chord
Diameter=468.7 km assuming a 30% albedo -- 18.8 sec chord
Dynamical classification is 3:2E
Star training set for 28978, (2020/06/17 07:24UT) Object RA Dec mag sep mel Antares 16:30:39.9 -26:28:32 0.9 19.12 150 34Ups Sco 17:32:09.4 -37:18:37 2.7 9.01 134 Gam1Sgr 18:06:19.6 -29:34:38 4.7 2.21 129 PPM 267505 17:56:27.4 -29:48:48 8.5 0.06 131 28978 17:56:11.4 -29:48:58 16.8 131 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
3.9 sigma about the mid-time.
The median site spacing is 10.2 km
RECON observability=0.4 and success probability=0.9%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 07:24:03 | -16.3 | AT | Down | 9.7 | 170.3 | Really Low | 07:09:03 - 07:39:03 | 6142 |
| Summerland | 07:24:03 | -16.6 | AT | Down | 9.9 | 170.0 | Really Low | 07:09:03 - 07:39:03 | 6135 |
| Penticton | 07:24:03 | -16.7 | AT | Down | 10.0 | 170.1 | Really Low | 07:09:03 - 07:39:03 | 6134 |
| Okanagan Falls | 07:24:03 | -16.8 | AT | Down | 10.2 | 170.1 | Really Low | 07:09:03 - 07:39:03 | 6130 |
| Oliver | 07:24:04 | -17.0 | AT | Down | 10.4 | 170.1 | Really Low | 07:09:04 - 07:39:04 | 6127 |
| Anarchist Mountain Observatory | 07:24:03 | -17.2 | AT | Down | 10.6 | 170.3 | Really Low | 07:09:03 - 07:39:03 | 6124 |
| Oroville | 07:24:03 | -17.3 | AT | Down | 10.6 | 170.2 | Really Low | 07:09:03 - 07:39:03 | 6122 |
| Tonasket | 07:24:03 | -17.5 | AT | Down | 10.9 | 170.2 | Really Low | 07:09:03 - 07:39:03 | 6117 |
| Okanogan | 07:24:04 | -17.8 | AT | Down | 11.2 | 170.0 | Really Low | 07:09:04 - 07:39:04 | 6109 |
| Brewster | 07:24:05 | -18.1 | Dark | Down | 11.4 | 169.9 | Really Low | 07:09:05 - 07:39:05 | 6102 |
| Manson/Chelan | 07:24:06 | -18.2 | Dark | Down | 11.6 | 169.5 | Really Low | 07:09:06 - 07:39:06 | 6096 |
| Entiat | 07:24:07 | -18.4 | Dark | Down | 11.8 | 169.5 | Really Low | 07:09:07 - 07:39:07 | 6091 |
| Wenatchee | 07:24:08 | -18.7 | Dark | Down | 12.0 | 169.4 | Really Low | 07:09:08 - 07:39:08 | 6084 |
| Ellensburg | 07:24:08 | -19.1 | Dark | Down | 12.4 | 169.2 | Really Low | 07:09:08 - 07:39:08 | 6073 |
| Yakima | 07:24:08 | -19.5 | Dark | Down | 12.8 | 169.1 | Really Low | 07:09:08 - 07:39:08 | 6063 |
| Pasco | 07:24:05 | -19.9 | Dark | Down | 13.3 | 170.4 | Really Low | 07:09:05 - 07:39:05 | 6059 |
| Toppenish/White Swan | 07:24:08 | -19.7 | Dark | Down | 13.0 | 169.3 | Really Low | 07:09:08 - 07:39:08 | 6058 |
| PNWRO | 07:24:04 | -20.2 | Dark | Down | 13.6 | 170.6 | Really Low | 07:09:04 - 07:39:04 | 6053 |
| George/Umatilla | 07:24:05 | -20.3 | Dark | Down | 13.6 | 170.2 | Really Low | 07:09:05 - 07:39:05 | 6049 |
| Goldendale | 07:24:09 | -20.2 | Dark | Down | 13.5 | 168.9 | Really Low | 07:09:09 - 07:39:09 | 6041 |
| The Dalles | 07:24:11 | -20.4 | Dark | Down | 13.7 | 168.5 | Really Low | 07:09:11 - 07:39:11 | 6034 |
| Maupin | 07:24:11 | -20.8 | Dark | Down | 14.1 | 168.6 | Really Low | 07:09:11 - 07:39:11 | 6022 |
| Madras/Culver | 07:24:12 | -21.3 | Dark | Down | 14.6 | 168.6 | Really Low | 07:09:12 - 07:39:12 | 6006 |
| Redmond | 07:24:12 | -21.7 | Dark | Down | 15.0 | 168.5 | Really Low | 07:09:12 - 07:39:12 | 5995 |
| Sisters | 07:24:13 | -21.6 | Dark | Down | 14.9 | 168.1 | Really Low | 07:09:13 - 07:39:13 | 5994 |
| Bend | 07:24:13 | -21.9 | Dark | Down | 15.2 | 168.4 | Really Low | 07:09:13 - 07:39:13 | 5988 |
| Oregon Observatory | 07:24:13 | -22.0 | Dark | Down | 15.3 | 168.2 | Really Low | 07:09:13 - 07:39:13 | 5982 |
| La Pine/Gilchrist | 07:24:13 | -22.2 | Dark | Down | 15.5 | 168.2 | Really Low | 07:09:13 - 07:39:13 | 5975 |
| North Lake | 07:24:12 | -22.7 | Dark | Down | 16.0 | 168.7 | Really Low | 07:09:12 - 07:39:12 | 5964 |
| Paisley | 07:24:11 | -23.3 | Dark | Down | 16.6 | 169.0 | Really Low | 07:09:11 - 07:39:11 | 5948 |
| Chiloquin | 07:24:16 | -23.3 | Dark | Down | 16.6 | 167.8 | Really Low | 07:09:16 - 07:39:16 | 5937 |
| Lakeview | 07:24:10 | -23.8 | Dark | Down | 17.2 | 169.1 | Really Low | 07:09:10 - 07:39:10 | 5931 |
| Klamath Falls | 07:24:16 | -23.6 | Dark | Down | 16.9 | 167.8 | Really Low | 07:09:16 - 07:39:16 | 5926 |
| Tulelake | 07:24:14 | -23.9 | Dark | Down | 17.2 | 168.1 | Really Low | 07:09:14 - 07:39:14 | 5918 |
| Cedarville | 07:24:11 | -24.5 | Dark | Down | 17.8 | 169.2 | Really Low | 07:09:11 - 07:39:11 | 5909 |
| Fall River/Burney | 07:24:15 | -24.8 | Dark | Down | 18.1 | 168.1 | Really Low | 07:09:15 - 07:39:15 | 5887 |
| Susanville | 07:24:13 | -25.5 | Dark | Down | 18.8 | 168.7 | Really Low | 07:09:13 - 07:39:13 | 5867 |
| Gimple | 07:24:14 | -25.8 | Dark | Down | 19.1 | 168.5 | Really Low | 07:09:14 - 07:39:14 | 5855 |
| Greenville | 07:24:14 | -25.8 | Dark | Down | 19.1 | 168.5 | Really Low | 07:09:14 - 07:39:14 | 5855 |
| Quincy | 07:24:15 | -26.0 | Dark | Down | 19.3 | 168.4 | Really Low | 07:09:15 - 07:39:15 | 5847 |
| Portola | 07:24:13 | -26.2 | Dark | Down | 19.5 | 168.9 | Really Low | 07:09:13 - 07:39:13 | 5844 |
| Reno | 07:24:11 | -26.5 | Dark | Down | 19.8 | 169.4 | Really Low | 07:09:11 - 07:39:11 | 5837 |
| Niwot | 07:23:22 | -26.3 | Dark | Down | 20.0 | 182.7 | Low | 07:08:22 - 07:38:22 | 5834 |
| SwRI | 07:23:22 | -26.4 | Dark | Down | 20.1 | 182.7 | Low | 07:08:22 - 07:38:22 | 5830 |
| Carson City | 07:24:11 | -26.9 | Dark | Down | 20.2 | 169.4 | Low | 07:09:11 - 07:39:11 | 5823 |
| Yerington | 07:24:09 | -27.1 | Dark | Down | 20.5 | 170.0 | Low | 07:09:09 - 07:39:09 | 5817 |
| Gardnerville | 07:24:11 | -27.1 | Dark | Down | 20.4 | 169.4 | Low | 07:09:11 - 07:39:11 | 5813 |
| Hawthorne | 07:24:08 | -27.6 | Dark | Down | 21.0 | 170.4 | Low | 07:09:08 - 07:39:08 | 5800 |
| Tonopah | 07:24:03 | -28.3 | Dark | Down | 21.6 | 171.7 | Low | 07:09:03 - 07:39:03 | 5784 |
| Lee Vining | 07:24:10 | -28.2 | Dark | Down | 21.5 | 170.0 | Low | 07:09:10 - 07:39:10 | 5775 |
| Bishop | 07:24:08 | -28.8 | Dark | Down | 22.2 | 170.6 | Low | 07:09:08 - 07:39:08 | 5752 |
| Beatty | 07:24:01 | -29.4 | Dark | Down | 22.8 | 172.0 | Low | 07:09:01 - 07:39:01 | 5735 |
| Indian Springs | 07:23:58 | -29.9 | Dark | Down | 23.3 | 173.0 | Low | 07:08:58 - 07:38:58 | 5722 |
| Lone Pine | 07:24:07 | -29.6 | Dark | Down | 23.0 | 170.8 | Low | 07:09:07 - 07:39:07 | 5720 |
| Henderson | 07:23:56 | -30.4 | Dark | Down | 23.8 | 173.6 | Low | 07:08:56 - 07:38:56 | 5699 |
| Searchlight/Boulder City | 07:23:56 | -31.0 | Dark | Down | 24.4 | 173.7 | Low | 07:08:56 - 07:38:56 | 5672 |
| Patrick | 07:23:52 | -31.1 | Dark | Down | 24.6 | 174.7 | Low | 07:08:52 - 07:38:52 | 5670 |
| Kingman/Dolan Springs | 07:23:53 | -31.3 | Dark | Down | 24.8 | 174.5 | Low | 07:08:53 - 07:38:53 | 5659 |
| Laughlin/Bullhead City | 07:23:55 | -31.3 | Dark | Down | 24.7 | 174.0 | Low | 07:08:55 - 07:38:55 | 5659 |
| DCO | 07:23:50 | -31.5 | Dark | Down | 24.9 | 175.3 | Low | 07:08:50 - 07:38:50 | 5655 |
| CPSLO | 07:24:17 | -30.6 | Dark | Down | 23.9 | 168.3 | Low | 07:09:17 - 07:39:17 | 5652 |
| Mohave Valley | 07:23:55 | -31.6 | Dark | Down | 25.0 | 174.0 | Low | 07:08:55 - 07:38:55 | 5646 |
| Lake Havasu City | 07:23:55 | -32.0 | Dark | Down | 25.4 | 174.2 | Low | 07:08:55 - 07:38:55 | 5627 |
| Parker | 07:23:55 | -32.4 | Dark | Down | 25.8 | 174.2 | Low | 07:08:55 - 07:38:55 | 5610 |
| Wildwood | 07:24:10 | -32.0 | Dark | Down | 25.4 | 170.1 | Low | 07:09:10 - 07:39:10 | 5602 |
| Idyllwild | 07:24:03 | -32.6 | Dark | Down | 26.0 | 171.9 | Low | 07:09:03 - 07:39:03 | 5589 |
| Blythe | 07:23:56 | -32.9 | Dark | Down | 26.3 | 173.9 | Low | 07:08:56 - 07:38:56 | 5584 |
| Calipatria | 07:24:00 | -33.3 | Dark | Down | 26.7 | 173.0 | Low | 07:09:00 - 07:39:00 | 5560 |
| Yuma | 07:23:56 | -33.8 | Dark | Down | 27.2 | 173.8 | Low | 07:08:56 - 07:38:56 | 5538 |
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, (2020/06/17 07:24UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 19.12 150 34Ups Sco 17:30:45.8 -37:17:46 2.7 9.01 134 Gam1Sgr 18:05:01.2 -29:34:48 4.7 2.21 129 PPM 267505 17:55:08.8 -29:48:41 8.5 0.06 131 28978 17:54:52.8 -29:48:50 16.8 131 Positions are for J2000
Event circumstances last updated at 2019/06/07 23:52:32 UT
Marc W. Buie, Southwest Research Institute