Event between (248835) 06SX368 and star UC4-652-023854 with event index number of 229913
Geocentric closest approach at 2019/12/08 12:59:25 UTC
J2000 position of star is 04:49:58.0 +40:16:14
Equinox of date position of star is 04:51:12.9 +40:18:01
Stellar brightness R=13.3,
use SENSEUP=32
Star is 48 degrees from the moon.
Moon is 86% illuminated.
TNO apparent brightness V=21.6
[RECON map]
TNO is 16.2 AU from the Sun
and 15.3 AU from the Earth.
The TNO is moving 24.2
km/sec on the sky relative to the star, or,
7.9 arcsec/hr.
The 1-sigma error in the time of the event is 389 seconds.
The 1-sigma cross-track error in the shadow position is
4909 km.
The sky-plane scale is
11068.3 km/arcsec.
The TNO has an absolute magnitude Hv=9.5
Diameter=75.9 km assuming a 5% albedo -- 3.1 sec chord
Diameter=31.0 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
Star training set for 248835, (2019/12/08 12:59UT) Object RA Dec mag sep mel Aldebaran 04:37:04.0 +16:32:52 0.8 23.96 37 3Iot Aur 04:58:17.7 +33:11:45 2.7 7.24 46 PPM 047304 04:45:36.1 +40:49:19 6.0 1.21 48 PPM 047344 04:48:07.2 +40:20:49 6.9 0.62 48 PPM 047408 04:52:09.6 +40:38:22 9.5 0.37 49 248835 04:51:20.8 +40:18:13 13.3 48 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
2.3 sigma about the mid-time.
The median site spacing is 15.5 km
RECON observability=1.0 and success probability=7.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 12:56:04 | -25.5 | Dark | Down | 35.6 | 292.8 | Up | 12:41:04 - 13:11:04 | -1520 |
| Tonasket | 12:56:04 | -25.5 | Dark | Down | 35.5 | 293.0 | Up | 12:41:04 - 13:11:04 | -1540 |
| Okanogan | 12:56:03 | -25.6 | Dark | Down | 35.5 | 293.1 | Up | 12:41:03 - 13:11:03 | -1576 |
| Niwot | 12:55:32 | -13.8 | AT | Down | 22.6 | 304.4 | Low | 12:40:32 - 13:10:32 | -1596 |
| Brewster | 12:56:03 | -25.7 | Dark | Down | 35.5 | 293.2 | Up | 12:41:03 - 13:11:03 | -1608 |
| Manson/Chelan | 12:56:03 | -25.9 | Dark | Down | 35.6 | 293.1 | Up | 12:41:03 - 13:11:03 | -1641 |
| Entiat | 12:56:02 | -25.9 | Dark | Down | 35.6 | 293.2 | Up | 12:41:02 - 13:11:02 | -1664 |
| Wenatchee | 12:56:02 | -26.0 | Dark | Down | 35.6 | 293.4 | Up | 12:41:02 - 13:11:02 | -1691 |
| Ellensburg | 12:56:01 | -26.1 | Dark | Down | 35.5 | 293.5 | Up | 12:41:01 - 13:11:01 | -1737 |
| Pasco | 12:55:58 | -25.0 | Dark | Down | 34.3 | 294.7 | Up | 12:40:58 - 13:10:58 | -1744 |
| PNWRO | 12:55:56 | -24.8 | Dark | Down | 34.1 | 295.0 | Up | 12:40:56 - 13:10:56 | -1757 |
| Yakima | 12:56:00 | -26.1 | Dark | Down | 35.4 | 293.8 | Up | 12:41:00 - 13:11:00 | -1774 |
| George/Umatilla | 12:55:57 | -25.1 | Dark | Down | 34.3 | 294.8 | Up | 12:40:57 - 13:10:57 | -1784 |
| Toppenish/White Swan | 12:56:00 | -25.9 | Dark | Down | 35.2 | 294.0 | Up | 12:41:00 - 13:11:00 | -1787 |
| Goldendale | 12:55:59 | -26.2 | Dark | Down | 35.2 | 294.1 | Up | 12:40:59 - 13:10:59 | -1854 |
| The Dalles | 12:55:59 | -26.4 | Dark | Down | 35.4 | 294.1 | Up | 12:40:59 - 13:10:59 | -1890 |
| Maupin | 12:55:58 | -26.3 | Dark | Down | 35.1 | 294.4 | Up | 12:40:58 - 13:10:58 | -1924 |
| Madras/Culver | 12:55:56 | -26.2 | Dark | Down | 35.0 | 294.7 | Up | 12:40:56 - 13:10:56 | -1975 |
| Redmond | 12:55:56 | -26.2 | Dark | Down | 34.8 | 294.9 | Up | 12:40:56 - 13:10:56 | -2010 |
| Sisters | 12:55:56 | -26.5 | Dark | Down | 35.1 | 294.7 | Up | 12:40:56 - 13:10:56 | -2025 |
| Bend | 12:55:56 | -26.3 | Dark | Down | 34.8 | 295.0 | Up | 12:40:56 - 13:10:56 | -2036 |
| Oregon Observatory | 12:55:56 | -26.4 | Dark | Down | 34.8 | 295.0 | Up | 12:40:56 - 13:10:56 | -2057 |
| La Pine/Gilchrist | 12:55:55 | -26.4 | Dark | Down | 34.8 | 295.1 | Up | 12:40:55 - 13:10:55 | -2079 |
| North Lake | 12:55:53 | -25.9 | Dark | Down | 34.2 | 295.7 | Up | 12:40:53 - 13:10:53 | -2093 |
| Paisley | 12:55:52 | -25.6 | Dark | Down | 33.8 | 296.2 | Up | 12:40:52 - 13:10:52 | -2127 |
| Lakeview | 12:55:50 | -25.4 | Dark | Down | 33.4 | 296.6 | Up | 12:40:50 - 13:10:50 | -2165 |
| Chiloquin | 12:55:53 | -26.5 | Dark | Down | 34.6 | 295.7 | Up | 12:40:53 - 13:10:53 | -2197 |
| Cedarville | 12:55:49 | -25.1 | Dark | Down | 33.0 | 297.0 | Up | 12:40:49 - 13:10:49 | -2218 |
| Klamath Falls | 12:55:53 | -26.4 | Dark | Down | 34.4 | 295.9 | Up | 12:40:53 - 13:10:53 | -2225 |
| Tulelake | 12:55:52 | -26.2 | Dark | Down | 34.0 | 296.2 | Up | 12:40:52 - 13:10:52 | -2237 |
| Fall River/Burney | 12:55:50 | -26.0 | Dark | Down | 33.6 | 296.8 | Up | 12:40:50 - 13:10:50 | -2317 |
| Susanville | 12:55:48 | -25.3 | Dark | Down | 32.8 | 297.5 | Up | 12:40:48 - 13:10:48 | -2342 |
| Gimple | 12:55:47 | -25.4 | Dark | Down | 32.8 | 297.5 | Up | 12:40:47 - 13:10:47 | -2377 |
| Greenville | 12:55:48 | -25.5 | Dark | Down | 32.9 | 297.5 | Up | 12:40:48 - 13:10:48 | -2381 |
| Reno | 12:55:45 | -24.6 | Dark | Down | 31.8 | 298.3 | Up | 12:40:45 - 13:10:45 | -2384 |
| Portola | 12:55:46 | -25.1 | Dark | Down | 32.4 | 297.9 | Up | 12:40:46 - 13:10:46 | -2389 |
| Tonopah | 12:55:39 | -22.3 | Dark | Down | 29.4 | 300.1 | Low | 12:40:39 - 13:10:39 | -2395 |
| Quincy | 12:55:47 | -25.5 | Dark | Down | 32.8 | 297.6 | Up | 12:40:47 - 13:10:47 | -2400 |
| Yerington | 12:55:43 | -24.0 | Dark | Down | 31.1 | 298.9 | Up | 12:40:43 - 13:10:43 | -2404 |
| Carson City | 12:55:45 | -24.5 | Dark | Down | 31.7 | 298.5 | Up | 12:40:45 - 13:10:45 | -2416 |
| Hawthorne | 12:55:42 | -23.5 | Dark | Down | 30.6 | 299.3 | Up | 12:40:42 - 13:10:42 | -2421 |
| Gardnerville | 12:55:44 | -24.4 | Dark | Down | 31.5 | 298.6 | Up | 12:40:44 - 13:10:44 | -2436 |
| DCO | 12:55:29 | -18.5 | Dark | Down | 25.1 | 302.9 | Low | 12:40:29 - 13:10:29 | -2452 |
| Indian Springs | 12:55:35 | -20.8 | Dark | Down | 27.6 | 301.4 | Low | 12:40:35 - 13:10:35 | -2452 |
| Patrick | 12:55:31 | -19.1 | Dark | Down | 25.7 | 302.5 | Low | 12:40:31 - 13:10:31 | -2462 |
| Henderson | 12:55:33 | -20.1 | Dark | Down | 26.8 | 301.9 | Low | 12:40:33 - 13:10:33 | -2465 |
| Beatty | 12:55:36 | -21.7 | Dark | Down | 28.5 | 300.8 | Low | 12:40:36 - 13:10:36 | -2478 |
| Kingman/Dolan Springs | 12:55:31 | -19.2 | Dark | Down | 25.7 | 302.6 | Low | 12:40:31 - 13:10:31 | -2492 |
| Lee Vining | 12:55:41 | -23.8 | Dark | Down | 30.6 | 299.4 | Up | 12:40:41 - 13:10:41 | -2497 |
| Searchlight/Boulder City | 12:55:32 | -20.0 | Dark | Down | 26.5 | 302.1 | Low | 12:40:32 - 13:10:32 | -2513 |
| Bishop | 12:55:39 | -23.1 | Dark | Down | 29.8 | 300.0 | Low | 12:40:39 - 13:10:39 | -2516 |
| Laughlin/Bullhead City | 12:55:31 | -19.6 | Dark | Down | 26.1 | 302.4 | Low | 12:40:31 - 13:10:31 | -2522 |
| Mohave Valley | 12:55:31 | -19.5 | Dark | Down | 25.9 | 302.5 | Low | 12:40:31 - 13:10:31 | -2546 |
| Lake Havasu City | 12:55:30 | -19.2 | Dark | Down | 25.5 | 302.7 | Low | 12:40:30 - 13:10:30 | -2569 |
| Lone Pine | 12:55:38 | -22.7 | Dark | Down | 29.2 | 300.5 | Low | 12:40:38 - 13:10:38 | -2570 |
| Parker | 12:55:29 | -19.1 | Dark | Down | 25.3 | 302.9 | Low | 12:40:29 - 13:10:29 | -2598 |
| Blythe | 12:55:29 | -19.2 | Dark | Down | 25.3 | 303.0 | Low | 12:40:29 - 13:10:29 | -2662 |
| Yuma | 12:55:27 | -19.0 | Dark | Down | 24.8 | 303.3 | Low | 12:40:27 - 13:10:27 | -2747 |
| Calipatria | 12:55:29 | -19.9 | Dark | Down | 25.6 | 302.9 | Low | 12:40:29 - 13:10:29 | -2756 |
| Idyllwild | 12:55:31 | -21.0 | Dark | Down | 26.8 | 302.2 | Low | 12:40:31 - 13:10:31 | -2763 |
| CPSLO | 12:55:39 | -24.5 | Dark | Down | 30.4 | 300.2 | Up | 12:40:39 - 13:10:39 | -2818 |
| Wildwood | 12:55:34 | -22.6 | Dark | Down | 28.3 | 301.5 | Low | 12:40:34 - 13:10:34 | -2828 |
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 248835, (2019/12/08 12:59UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 23.96 37 3Iot Aur 04:56:59.6 +33:09:58 2.7 7.24 46 PPM 047304 04:44:13.0 +40:47:10 6.0 1.21 48 PPM 047344 04:46:44.5 +40:18:44 6.9 0.62 48 PPM 047408 04:50:46.5 +40:36:24 9.5 0.37 49 248835 04:49:58.0 +40:16:14 13.3 48 Positions are for J2000
Event circumstances last updated at 2018/01/09 17:49:14 UT
Marc W. Buie, Southwest Research Institute