Event between 04KF19 and star UC4-341-082005 with event index number of 126436
Geocentric closest approach at 2018/03/04 11:26:35 UTC
J2000 position of star is 16:29:58.7 -21:56:09
Equinox of date position of star is 16:31:02.7 -21:58:26
Stellar brightness R=16.4,
use SENSEUP=128
Star is 54 degrees from the moon.
Moon is 92% illuminated.
TNO apparent brightness V=23.4
[RECON map]
TNO is 41.3 AU from the Sun
and 41.2 AU from the Earth.
The TNO is moving 2.9
km/sec on the sky relative to the star, or,
0.4 arcsec/hr.
The 1-sigma error in the time of the event is 3242 seconds.
The 1-sigma cross-track error in the shadow position is
5787 km.
The sky-plane scale is
29913.3 km/arcsec.
The TNO has an absolute magnitude Hv=7.1
Diameter=227.0 km assuming a 5% albedo -- 77.3 sec chord
Diameter=92.7 km assuming a 30% albedo -- 31.6 sec chord
Dynamical classification is CLASSICAL
Star training set for 04KF19, (2018/03/04 11:27UT) Object RA Dec mag sep mel Antares 16:30:31.5 -26:28:15 0.9 4.50 55 8Bet1Sco 16:06:29.8 -19:51:14 2.6 6.11 48 4Psi Oph 16:25:10.1 -20:04:42 4.2 2.34 52 PPM 265578 16:30:24.3 -21:36:28 8.5 0.40 54 PPM 265588 16:30:58.0 -21:52:09 9.9 0.11 54 04KF19 16:31:03.6 -21:58:28 16.4 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
0.3 sigma about the mid-time.
The median site spacing is 13.0 km
RECON observability=0.4 and success probability=4.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 11:06:08 | -33.5 | Dark | Up | 11.4 | 144.2 | Really Low | 10:51:08 - 11:21:08 | 1626 |
| Tonasket | 11:06:04 | -33.6 | Dark | Up | 11.5 | 144.1 | Really Low | 10:51:04 - 11:21:04 | 1614 |
| Okanogan | 11:06:01 | -33.9 | Dark | Up | 11.8 | 143.9 | Really Low | 10:51:01 - 11:21:01 | 1591 |
| Brewster | 11:05:50 | -34.2 | Dark | Up | 11.9 | 143.7 | Really Low | 10:50:50 - 11:20:50 | 1570 |
| Manson/Chelan | 11:05:36 | -34.6 | Dark | Up | 11.9 | 143.3 | Really Low | 10:50:36 - 11:20:36 | 1548 |
| Niwot | 11:10:10 | -27.2 | Dark | Up | 24.4 | 156.6 | Low | 10:55:10 - 11:25:10 | 1548 |
| Entiat | 11:05:33 | -34.7 | Dark | Up | 12.0 | 143.2 | Really Low | 10:50:33 - 11:20:33 | 1534 |
| Wenatchee | 11:05:24 | -34.9 | Dark | Up | 12.2 | 143.1 | Really Low | 10:50:24 - 11:20:24 | 1517 |
| Pasco | 11:05:37 | -34.8 | Dark | Up | 13.6 | 144.0 | Really Low | 10:50:37 - 11:20:37 | 1487 |
| Ellensburg | 11:05:17 | -35.3 | Dark | Up | 12.4 | 142.8 | Really Low | 10:50:17 - 11:20:17 | 1487 |
| PNWRO | 11:05:35 | -34.9 | Dark | Up | 13.9 | 144.1 | Really Low | 10:50:35 - 11:20:35 | 1480 |
| Yakima | 11:05:10 | -35.6 | Dark | Up | 12.7 | 142.7 | Really Low | 10:50:10 - 11:20:10 | 1463 |
| George/Umatilla | 11:05:23 | -35.2 | Dark | Up | 13.8 | 143.7 | Really Low | 10:50:23 - 11:20:23 | 1461 |
| Toppenish/White Swan | 11:05:11 | -35.6 | Dark | Up | 12.9 | 142.8 | Really Low | 10:50:11 - 11:20:11 | 1456 |
| Goldendale | 11:04:55 | -36.2 | Dark | Up | 13.2 | 142.3 | Really Low | 10:49:55 - 11:19:55 | 1410 |
| The Dalles | 11:04:41 | -36.5 | Dark | Up | 13.2 | 141.9 | Really Low | 10:49:41 - 11:19:41 | 1386 |
| Maupin | 11:04:38 | -36.7 | Dark | Up | 13.5 | 141.9 | Really Low | 10:49:38 - 11:19:38 | 1364 |
| Madras/Culver | 11:04:29 | -37.1 | Dark | Up | 13.9 | 141.8 | Really Low | 10:49:29 - 11:19:29 | 1329 |
| Redmond | 11:04:22 | -37.3 | Dark | Up | 14.2 | 141.7 | Really Low | 10:49:22 - 11:19:22 | 1306 |
| Sisters | 11:04:13 | -37.6 | Dark | Up | 14.0 | 141.3 | Really Low | 10:49:13 - 11:19:13 | 1295 |
| Bend | 11:04:18 | -37.5 | Dark | Up | 14.3 | 141.5 | Really Low | 10:49:18 - 11:19:18 | 1288 |
| Oregon Observatory | 11:04:12 | -37.7 | Dark | Up | 14.3 | 141.3 | Really Low | 10:49:12 - 11:19:12 | 1273 |
| La Pine/Gilchrist | 11:04:06 | -37.9 | Dark | Up | 14.5 | 141.2 | Really Low | 10:49:06 - 11:19:06 | 1259 |
| North Lake | 11:04:16 | -37.7 | Dark | Up | 15.1 | 141.7 | Really Low | 10:49:16 - 11:19:16 | 1251 |
| Paisley | 11:04:16 | -37.8 | Dark | Up | 15.7 | 141.9 | Really Low | 10:49:16 - 11:19:16 | 1228 |
| Lakeview | 11:04:11 | -38.0 | Dark | Up | 16.2 | 142.0 | Really Low | 10:49:11 - 11:19:11 | 1202 |
| Chiloquin | 11:03:45 | -38.8 | Dark | Up | 15.1 | 140.7 | Really Low | 10:48:45 - 11:18:45 | 1177 |
| Cedarville | 11:04:07 | -38.2 | Dark | Up | 16.8 | 142.0 | Really Low | 10:49:07 - 11:19:07 | 1166 |
| Klamath Falls | 11:03:42 | -38.9 | Dark | Up | 15.4 | 140.7 | Really Low | 10:48:42 - 11:18:42 | 1157 |
| Tulelake | 11:03:45 | -38.9 | Dark | Up | 15.8 | 140.9 | Really Low | 10:48:45 - 11:18:45 | 1150 |
| Fall River/Burney | 11:03:42 | -39.3 | Dark | Up | 16.5 | 140.8 | Really Low | 10:48:42 - 11:18:42 | 1093 |
| Susanville | 11:03:42 | -39.1 | Dark | Up | 17.4 | 141.3 | Really Low | 10:48:42 - 11:18:42 | 1076 |
| Gimple | 11:03:42 | -39.4 | Dark | Up | 17.5 | 141.0 | Really Low | 10:48:42 - 11:18:42 | 1051 |
| Greenville | 11:03:42 | -39.5 | Dark | Up | 17.4 | 141.0 | Really Low | 10:48:42 - 11:18:42 | 1048 |
| Reno | 11:03:50 | -39.0 | Dark | Up | 18.5 | 141.8 | Really Low | 10:48:50 - 11:18:50 | 1047 |
| Portola | 11:03:42 | -39.3 | Dark | Up | 17.9 | 141.3 | Really Low | 10:48:42 - 11:18:42 | 1042 |
| Tonopah | 11:04:32 | -37.7 | Dark | Up | 20.9 | 143.9 | Low | 10:49:32 - 11:19:32 | 1036 |
| Quincy | 11:03:42 | -39.6 | Dark | Up | 17.6 | 140.9 | Really Low | 10:48:42 - 11:18:42 | 1035 |
| Yerington | 11:03:59 | -38.8 | Dark | Up | 19.2 | 142.3 | Really Low | 10:48:59 - 11:18:59 | 1032 |
| Carson City | 11:03:46 | -39.2 | Dark | Up | 18.7 | 141.8 | Really Low | 10:48:46 - 11:18:46 | 1023 |
| Hawthorne | 11:04:06 | -38.6 | Dark | Up | 19.9 | 142.7 | Really Low | 10:49:06 - 11:19:06 | 1019 |
| Gardnerville | 11:03:43 | -39.2 | Dark | Up | 18.9 | 141.7 | Really Low | 10:48:43 - 11:18:43 | 1008 |
| Indian Springs | 11:04:57 | -37.1 | Dark | Up | 22.9 | 144.9 | Low | 10:49:57 - 11:19:57 | 987 |
| Henderson | 11:05:13 | -36.8 | Dark | Up | 23.7 | 145.5 | Low | 10:50:13 - 11:20:13 | 974 |
| DCO | 11:05:52 | -35.6 | Dark | Up | 25.4 | 147.0 | Low | 10:50:52 - 11:20:52 | 972 |
| Beatty | 11:04:32 | -37.9 | Dark | Up | 22.1 | 144.0 | Low | 10:49:32 - 11:19:32 | 972 |
| Patrick | 11:05:36 | -36.1 | Dark | Up | 24.8 | 146.4 | Low | 10:50:36 - 11:20:36 | 969 |
| Lee Vining | 11:03:49 | -39.3 | Dark | Up | 20.0 | 142.1 | Low | 10:48:49 - 11:18:49 | 963 |
| Kingman/Dolan Springs | 11:05:29 | -36.3 | Dark | Up | 24.9 | 146.2 | Low | 10:50:29 - 11:20:29 | 947 |
| Bishop | 11:03:57 | -39.0 | Dark | Up | 20.9 | 142.6 | Low | 10:48:57 - 11:18:57 | 947 |
| Searchlight/Boulder City | 11:05:09 | -37.0 | Dark | Up | 24.2 | 145.4 | Low | 10:50:09 - 11:20:09 | 936 |
| Laughlin/Bullhead City | 11:05:16 | -36.8 | Dark | Up | 24.6 | 145.6 | Low | 10:50:16 - 11:20:16 | 927 |
| Mohave Valley | 11:05:10 | -36.9 | Dark | Up | 24.8 | 145.5 | Low | 10:50:10 - 11:20:10 | 908 |
| Lone Pine | 11:03:58 | -39.1 | Dark | Up | 21.6 | 142.7 | Low | 10:48:58 - 11:18:58 | 905 |
| Lake Havasu City | 11:05:17 | -36.8 | Dark | Up | 25.3 | 145.7 | Low | 10:50:17 - 11:20:17 | 889 |
| Parker | 11:05:16 | -36.9 | Dark | Up | 25.6 | 145.6 | Low | 10:50:16 - 11:20:16 | 865 |
| Blythe | 11:05:01 | -37.4 | Dark | Up | 25.9 | 145.2 | Low | 10:50:01 - 11:20:01 | 816 |
| Idyllwild | 11:04:09 | -39.2 | Dark | Up | 24.6 | 143.1 | Low | 10:49:09 - 11:19:09 | 748 |
| Yuma | 11:04:56 | -37.7 | Dark | Up | 26.6 | 144.8 | Low | 10:49:56 - 11:19:56 | 747 |
| Calipatria | 11:04:33 | -38.4 | Dark | Up | 25.7 | 144.1 | Low | 10:49:33 - 11:19:33 | 746 |
| CPSLO | 11:02:43 | -41.8 | Dark | Up | 21.2 | 139.9 | Low | 10:47:43 - 11:17:43 | 718 |
| Wildwood | 11:03:22 | -40.6 | Dark | Up | 23.3 | 141.5 | Low | 10:48:22 - 11:18:22 | 705 |
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 04KF19, (2018/03/04 11:27UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 4.50 55 8Bet1Sco 16:05:26.2 -19:48:20 2.6 6.11 48 4Psi Oph 16:24:06.1 -20:02:15 4.2 2.34 52 PPM 265578 16:29:19.6 -21:34:08 8.5 0.40 54 PPM 265588 16:29:53.1 -21:49:51 9.9 0.11 54 04KF19 16:29:58.7 -21:56:09 16.4 54 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:19:23 UT
Marc W. Buie, Southwest Research Institute