Event between 03QK91 and star GA0840:19940971 with event index number of 1037892
Geocentric closest approach at 2019/12/27 02:52:34 UTC
J2000 position of star is 22:37:07.0 -04:52:17
Equinox of date position of star is 22:38:08.3 -04:46:08
Stellar brightness G=15.0,
use SENSEUP=128
Star is 53 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=23.2
[RECON map]
TNO is 38.5 AU from the Sun
and 38.9 AU from the Earth.
The TNO is moving 19.0
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 318 seconds.
The 1-sigma cross-track error in the shadow position is
3081 km.
The sky-plane scale is
28230.9 km/arcsec.
The TNO has an absolute magnitude Hv=7.2
Diameter=222.9 km assuming a 5% albedo -- 11.7 sec chord
Diameter=91.0 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is SCATNEAR
Star training set for 03QK91, (2019/12/27 02:53UT) Object RA Dec mag sep mel Fomalhaut 22:58:45.1 -29:30:57 1.2 25.22 51 Markab 23:05:45.5 +15:18:47 2.5 21.21 69 63Kap Aqr 22:38:47.4 -04:07:28 5.0 0.66 54 PPM 206558 22:37:20.2 -05:03:03 8.3 0.35 53 PPM 206568 22:37:53.1 -04:54:26 9.9 0.16 53 03QK91 22:38:09.2 -04:46:02 15.0 54 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
2.8 sigma about the mid-time.
The median site spacing is 22.8 km
RECON observability=1.0 and success probability=2.9%
| 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 | 02:56:10 | -26.9 | Dark | Down | 24.7 | 225.7 | Low | 02:41:10 - 03:11:10 | 8841 |
| Kelowna | 02:56:09 | -26.7 | Dark | Down | 25.0 | 225.7 | Low | 02:41:09 - 03:11:09 | 8814 |
| Summerland | 02:56:11 | -26.6 | Dark | Down | 25.3 | 225.6 | Low | 02:41:11 - 03:11:11 | 8797 |
| Penticton | 02:56:11 | -26.7 | Dark | Down | 25.3 | 225.7 | Low | 02:41:11 - 03:11:11 | 8789 |
| Oliver | 02:56:12 | -26.6 | Dark | Down | 25.5 | 225.8 | Low | 02:41:12 - 03:11:12 | 8761 |
| Anarchist Mountain Observatory | 02:56:13 | -26.7 | Dark | Down | 25.5 | 226.1 | Low | 02:41:13 - 03:11:13 | 8743 |
| Tonasket | 02:56:12 | -26.7 | Dark | Down | 25.8 | 226.1 | Low | 02:41:12 - 03:11:12 | 8719 |
| Okanogan | 02:56:13 | -26.5 | Dark | Down | 26.1 | 226.1 | Low | 02:41:13 - 03:11:13 | 8695 |
| Brewster | 02:56:13 | -26.4 | Dark | Down | 26.4 | 226.0 | Low | 02:41:13 - 03:11:13 | 8677 |
| Manson/Chelan | 02:56:13 | -26.1 | Dark | Down | 26.7 | 225.7 | Low | 02:41:13 - 03:11:13 | 8668 |
| Entiat | 02:56:13 | -26.0 | Dark | Down | 26.9 | 225.7 | Low | 02:41:13 - 03:11:13 | 8652 |
| Wenatchee | 02:56:12 | -25.9 | Dark | Down | 27.1 | 225.7 | Low | 02:41:12 - 03:11:12 | 8633 |
| Ellensburg | 02:56:11 | -25.7 | Dark | Down | 27.5 | 225.7 | Low | 02:41:11 - 03:11:11 | 8604 |
| Yakima | 02:56:11 | -25.7 | Dark | Down | 27.8 | 225.8 | Low | 02:41:11 - 03:11:11 | 8570 |
| Toppenish/White Swan | 02:56:14 | -25.8 | Dark | Down | 27.9 | 226.0 | Low | 02:41:14 - 03:11:14 | 8548 |
| Goldendale | 02:56:13 | -25.4 | Dark | Down | 28.5 | 225.8 | Low | 02:41:13 - 03:11:13 | 8512 |
| Pasco | 02:56:18 | -26.6 | Dark | Down | 27.3 | 227.3 | Low | 02:41:18 - 03:11:18 | 8511 |
| The Dalles | 02:56:13 | -25.1 | Dark | Down | 28.8 | 225.6 | Low | 02:41:13 - 03:11:13 | 8501 |
| PNWRO | 02:56:18 | -26.8 | Dark | Down | 27.4 | 227.7 | Low | 02:41:18 - 03:11:18 | 8485 |
| Maupin | 02:56:13 | -25.1 | Dark | Down | 29.0 | 225.8 | Low | 02:41:13 - 03:11:13 | 8463 |
| Sisters | 02:56:11 | -24.6 | Dark | Down | 29.9 | 225.7 | Low | 02:41:11 - 03:11:11 | 8400 |
| Redmond | 02:56:13 | -24.9 | Dark | Down | 29.7 | 226.1 | Low | 02:41:13 - 03:11:13 | 8389 |
| Bend | 02:56:14 | -24.8 | Dark | Down | 29.9 | 226.1 | Low | 02:41:14 - 03:11:14 | 8374 |
| Oregon Observatory | 02:56:14 | -24.7 | Dark | Down | 30.1 | 226.0 | Up | 02:41:14 - 03:11:14 | 8362 |
| La Pine/Gilchrist | 02:56:14 | -24.6 | Dark | Down | 30.3 | 226.0 | Up | 02:41:14 - 03:11:14 | 8346 |
| North Lake | 02:56:16 | -24.9 | Dark | Down | 30.3 | 226.8 | Up | 02:41:16 - 03:11:16 | 8294 |
| Paisley | 02:56:16 | -25.1 | Dark | Down | 30.5 | 227.4 | Up | 02:41:16 - 03:11:16 | 8238 |
| Klamath Falls | 02:56:13 | -24.1 | Dark | Down | 31.5 | 226.4 | Up | 02:41:13 - 03:11:13 | 8226 |
| Tulelake | 02:56:15 | -24.3 | Dark | Down | 31.5 | 226.8 | Up | 02:41:15 - 03:11:15 | 8195 |
| Lakeview | 02:56:20 | -25.2 | Dark | Down | 30.7 | 227.8 | Up | 02:41:20 - 03:11:20 | 8189 |
| Cedarville | 02:56:21 | -25.2 | Dark | Down | 31.0 | 228.3 | Up | 02:41:21 - 03:11:21 | 8127 |
| Fall River/Burney | 02:56:18 | -24.2 | Dark | Down | 32.0 | 227.3 | Up | 02:41:18 - 03:11:18 | 8113 |
| Susanville | 02:56:18 | -24.6 | Dark | Down | 32.1 | 228.3 | Up | 02:41:18 - 03:11:18 | 8039 |
| Greenville | 02:56:20 | -24.4 | Dark | Down | 32.4 | 228.2 | Up | 02:41:20 - 03:11:20 | 8021 |
| Gimple | 02:56:20 | -24.4 | Dark | Down | 32.4 | 228.3 | Up | 02:41:20 - 03:11:20 | 8019 |
| Quincy | 02:56:20 | -24.3 | Dark | Down | 32.5 | 228.3 | Up | 02:41:20 - 03:11:20 | 8003 |
| Portola | 02:56:21 | -24.7 | Dark | Down | 32.3 | 228.8 | Up | 02:41:21 - 03:11:21 | 7980 |
| Reno | 02:56:24 | -25.1 | Dark | Down | 32.1 | 229.6 | Up | 02:41:24 - 03:11:24 | 7940 |
| Carson City | 02:56:25 | -25.1 | Dark | Down | 32.3 | 229.8 | Up | 02:41:25 - 03:11:25 | 7907 |
| Gardnerville | 02:56:25 | -25.1 | Dark | Down | 32.5 | 229.9 | Up | 02:41:25 - 03:11:25 | 7883 |
| Yerington | 02:56:27 | -25.6 | Dark | Down | 32.1 | 230.5 | Up | 02:41:27 - 03:11:27 | 7874 |
| Hawthorne | 02:56:29 | -25.9 | Dark | Down | 32.1 | 231.2 | Up | 02:41:29 - 03:11:29 | 7818 |
| Lee Vining | 02:56:29 | -25.4 | Dark | Down | 32.7 | 231.0 | Up | 02:41:29 - 03:11:29 | 7778 |
| Tonopah | 02:56:34 | -26.9 | Dark | Down | 31.5 | 232.7 | Up | 02:41:34 - 03:11:34 | 7740 |
| Bishop | 02:56:30 | -25.9 | Dark | Down | 32.6 | 232.0 | Up | 02:41:30 - 03:11:30 | 7704 |
| Niwot | 02:57:04 | -36.5 | Dark | Down | 22.4 | 242.2 | Low | 02:42:04 - 03:12:04 | 7664 |
| SwRI | 02:57:05 | -36.4 | Dark | Down | 22.5 | 242.1 | Low | 02:42:05 - 03:12:05 | 7655 |
| Beatty | 02:56:37 | -27.1 | Dark | Down | 31.8 | 233.7 | Up | 02:41:37 - 03:11:37 | 7620 |
| CPSLO | 02:56:25 | -23.6 | Dark | Down | 35.3 | 231.0 | Up | 02:41:25 - 03:11:25 | 7568 |
| Indian Springs | 02:56:41 | -27.9 | Dark | Down | 31.3 | 234.9 | Up | 02:41:41 - 03:11:41 | 7563 |
| Henderson | 02:56:43 | -28.4 | Dark | Down | 31.2 | 235.8 | Up | 02:41:43 - 03:11:43 | 7495 |
| Searchlight/Boulder City | 02:56:43 | -28.3 | Dark | Down | 31.4 | 236.1 | Up | 02:41:43 - 03:11:43 | 7439 |
| Patrick | 02:56:47 | -29.2 | Dark | Down | 30.7 | 237.0 | Up | 02:41:47 - 03:11:47 | 7408 |
| Laughlin/Bullhead City | 02:56:45 | -28.6 | Dark | Down | 31.4 | 236.6 | Up | 02:41:45 - 03:11:45 | 7401 |
| Wildwood | 02:56:33 | -25.1 | Dark | Down | 34.7 | 233.6 | Up | 02:41:33 - 03:11:33 | 7400 |
| Kingman/Dolan Springs | 02:56:47 | -29.0 | Dark | Down | 31.0 | 237.0 | Up | 02:41:47 - 03:11:47 | 7391 |
| Mohave Valley | 02:56:46 | -28.5 | Dark | Down | 31.5 | 236.7 | Up | 02:41:46 - 03:11:46 | 7375 |
| DCO | 02:56:49 | -29.7 | Dark | Down | 30.4 | 237.8 | Up | 02:41:49 - 03:11:49 | 7361 |
| Lake Havasu City | 02:56:47 | -28.7 | Dark | Down | 31.6 | 237.1 | Up | 02:41:47 - 03:11:47 | 7330 |
| Idyllwild | 02:56:39 | -26.5 | Dark | Down | 33.6 | 235.5 | Up | 02:41:39 - 03:11:39 | 7317 |
| Parker | 02:56:47 | -28.6 | Dark | Down | 31.7 | 237.3 | Up | 02:41:47 - 03:11:47 | 7295 |
| Blythe | 02:56:46 | -28.3 | Dark | Down | 32.2 | 237.4 | Up | 02:41:46 - 03:11:46 | 7251 |
| Calipatria | 02:56:44 | -27.4 | Dark | Down | 33.1 | 236.8 | Up | 02:41:44 - 03:11:44 | 7227 |
| George/Scottsdale | 02:56:55 | -30.6 | Dark | Down | 30.2 | 239.6 | Up | 02:41:55 - 03:11:55 | 7194 |
| Yuma | 02:56:47 | -28.1 | Dark | Down | 32.7 | 237.8 | Up | 02:41:47 - 03:11:47 | 7162 |
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 03QK91, (2019/12/27 02:53UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:23 1.2 25.22 51 Markab 23:04:45.8 +15:12:18 2.5 21.21 69 63Kap Aqr 22:37:45.3 -04:13:43 5.0 0.66 54 PPM 206558 22:36:17.9 -05:09:18 8.3 0.35 53 PPM 206568 22:36:50.9 -05:00:41 9.9 0.16 53 03QK91 22:37:07.0 -04:52:17 15.0 53 Positions are for J2000
Event circumstances last updated at 2019/09/11 18:12:17 UT
Marc W. Buie, Southwest Research Institute