Event between (341275) 07RG283 and star UC4-683-022040 with event index number of 43791
Geocentric closest approach at 2017/02/18 05:36:20 UTC
J2000 position of star is 03:28:59.5 +46:35:01
Equinox of date position of star is 03:30:10.8 +46:38:29
Stellar brightness R=16.3,
use SENSEUP=128
Star is 147 degrees from the moon.
Moon is 56% illuminated.
TNO apparent brightness V=20.9
[RECON map]
TNO is 15.9 AU from the Sun
and 15.8 AU from the Earth.
The TNO is moving 16.2
km/sec on the sky relative to the star, or,
5.1 arcsec/hr.
The 1-sigma error in the time of the event is 135 seconds.
The 1-sigma cross-track error in the shadow position is
2178 km.
The sky-plane scale is
11495.0 km/arcsec.
The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 7.1 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is CENTAURR
Star training set for 341275, (2017/02/18 05:36UT) Object RA Dec mag sep mel Aldebaran 04:36:54.3 +16:32:33 0.8 33.13 164 Mirphak 03:25:33.3 +49:55:15 1.8 3.37 144 PPM 046236 03:30:38.5 +46:59:45 6.1 0.36 147 PPM 046251 03:31:33.1 +46:31:31 9.4 0.26 147 341275 03:30:11.4 +46:38:31 16.3 147 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
5.0 sigma about the mid-time.
The median site spacing is 5.2 km
RECON observability=1.0 and success probability=21.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Niwot | 05:37:28 | -54.3 | Dark | Down | 36.9 | 303.7 | Up | 05:25:42 - 05:49:15 | 1701 |
| DCO | 05:38:35 | -52.7 | Dark | Down | 39.2 | 304.9 | Up | 05:26:48 - 05:50:21 | 1213 |
| Patrick | 05:38:34 | -52.0 | Dark | Down | 39.8 | 304.6 | Up | 05:26:47 - 05:50:20 | 1168 |
| Kingman/Dolan Springs | 05:38:36 | -52.0 | Dark | Down | 39.8 | 304.7 | Up | 05:26:49 - 05:50:22 | 1155 |
| Parker | 05:38:42 | -52.4 | Dark | Down | 39.4 | 305.4 | Up | 05:26:56 - 05:50:29 | 1135 |
| Lake Havasu City | 05:38:41 | -52.2 | Dark | Down | 39.6 | 305.1 | Up | 05:26:54 - 05:50:27 | 1134 |
| Laughlin/Bullhead City | 05:38:37 | -51.6 | Dark | Down | 40.2 | 304.6 | Up | 05:26:50 - 05:50:23 | 1120 |
| Mohave Valley | 05:38:38 | -51.8 | Dark | Down | 40.0 | 304.8 | Up | 05:26:52 - 05:50:25 | 1119 |
| Blythe | 05:38:45 | -52.4 | Dark | Down | 39.3 | 305.7 | Up | 05:26:59 - 05:50:32 | 1112 |
| Yuma | 05:38:51 | -52.8 | Dark | Down | 38.7 | 306.3 | Up | 05:27:05 - 05:50:38 | 1104 |
| Searchlight/Boulder City | 05:38:35 | -51.2 | Dark | Down | 40.6 | 304.3 | Up | 05:26:49 - 05:50:22 | 1098 |
| Henderson | 05:38:32 | -50.9 | Dark | Down | 40.9 | 303.9 | Up | 05:26:45 - 05:50:18 | 1095 |
| Indian Springs | 05:38:30 | -50.1 | Dark | Down | 41.7 | 303.4 | Up | 05:26:43 - 05:50:16 | 1051 |
| Calipatria | 05:38:50 | -51.9 | Dark | Down | 39.6 | 305.9 | Up | 05:27:03 - 05:50:36 | 1045 |
| Beatty | 05:38:29 | -49.2 | Dark | Down | 42.6 | 302.9 | Up | 05:26:42 - 05:50:15 | 981 |
| Idyllwild | 05:38:48 | -50.8 | Dark | Down | 40.8 | 305.3 | Up | 05:27:02 - 05:50:35 | 969 |
| Tonopah | 05:38:22 | -48.3 | Dark | Down | 43.6 | 301.9 | Up | 05:26:36 - 05:50:09 | 954 |
| Cedarville | 05:37:28 | -44.5 | Dark | Down | 47.4 | 298.1 | Up | 05:25:42 - 05:49:15 | 949 |
| Lakeview | 05:37:28 | -44.0 | Dark | Down | 47.8 | 297.4 | Up | 05:25:42 - 05:49:15 | 901 |
| Lone Pine | 05:38:33 | -48.5 | Dark | Down | 43.3 | 302.9 | Up | 05:26:46 - 05:50:19 | 892 |
| Bishop | 05:38:28 | -47.9 | Dark | Down | 44.0 | 302.2 | Up | 05:26:42 - 05:50:15 | 873 |
| Paisley | 05:37:28 | -43.7 | Dark | Down | 48.2 | 296.8 | Up | 05:25:42 - 05:49:15 | 864 |
| Hawthorne | 05:38:21 | -47.1 | Dark | Down | 44.8 | 301.2 | Up | 05:26:34 - 05:50:07 | 860 |
| Wildwood | 05:38:48 | -49.2 | Dark | Down | 42.2 | 304.8 | Up | 05:27:02 - 05:50:35 | 839 |
| PNWRO | 05:37:28 | -42.9 | Dark | Down | 48.6 | 294.0 | Up | 05:25:42 - 05:49:15 | 833 |
| Yerington | 05:38:19 | -46.5 | Dark | Down | 45.4 | 300.7 | Up | 05:26:32 - 05:50:05 | 826 |
| Lee Vining | 05:38:25 | -47.1 | Dark | Down | 44.8 | 301.6 | Up | 05:26:39 - 05:50:12 | 826 |
| North Lake | 05:37:28 | -43.2 | Dark | Down | 48.7 | 296.1 | Up | 05:25:42 - 05:49:15 | 817 |
| Pasco | 05:37:28 | -42.6 | Dark | Down | 48.8 | 293.7 | Up | 05:25:42 - 05:49:15 | 816 |
| Chiloquin | 05:37:28 | -42.9 | Dark | Down | 49.0 | 296.5 | Up | 05:25:42 - 05:49:15 | 811 |
| George/Umatilla | 05:37:28 | -42.7 | Dark | Down | 48.8 | 293.9 | Up | 05:25:42 - 05:49:15 | 808 |
| Gardnerville | 05:38:19 | -46.1 | Dark | Down | 45.7 | 300.6 | Up | 05:26:33 - 05:50:06 | 787 |
| Carson City | 05:38:18 | -46.0 | Dark | Down | 45.9 | 300.4 | Up | 05:26:32 - 05:50:05 | 784 |
| Reno | 05:38:16 | -45.8 | Dark | Down | 46.1 | 300.0 | Up | 05:26:29 - 05:50:02 | 784 |
| Tonasket | 05:37:15 | -41.0 | Dark | Down | 50.0 | 290.9 | Up | 05:25:29 - 05:49:02 | 778 |
| Oroville | 05:37:14 | -40.8 | Dark | Down | 50.0 | 290.6 | Up | 05:25:27 - 05:49:00 | 776 |
| Okanogan | 05:37:18 | -41.1 | Dark | Down | 49.9 | 291.2 | Up | 05:25:31 - 05:49:04 | 772 |
| La Pine/Gilchrist | 05:37:28 | -42.6 | Dark | Down | 49.3 | 295.5 | Up | 05:25:42 - 05:49:15 | 765 |
| Brewster | 05:37:20 | -41.2 | Dark | Down | 49.9 | 291.4 | Up | 05:25:33 - 05:49:06 | 763 |
| Oregon Observatory | 05:37:28 | -42.5 | Dark | Down | 49.3 | 295.3 | Up | 05:25:42 - 05:49:15 | 758 |
| Bend | 05:37:28 | -42.5 | Dark | Down | 49.3 | 295.2 | Up | 05:25:42 - 05:49:15 | 757 |
| Redmond | 05:37:28 | -42.5 | Dark | Down | 49.3 | 295.0 | Up | 05:25:42 - 05:49:15 | 754 |
| Manson/Chelan | 05:37:21 | -41.1 | Dark | Down | 50.1 | 291.5 | Up | 05:25:35 - 05:49:08 | 743 |
| Madras/Culver | 05:37:28 | -42.3 | Dark | Down | 49.4 | 294.6 | Up | 05:25:42 - 05:49:15 | 743 |
| Portola | 05:38:15 | -45.2 | Dark | Down | 46.7 | 299.6 | Up | 05:26:28 - 05:50:01 | 741 |
| Entiat | 05:37:23 | -41.2 | Dark | Down | 50.1 | 291.7 | Up | 05:25:37 - 05:49:10 | 740 |
| Toppenish/White Swan | 05:37:28 | -41.8 | Dark | Down | 49.7 | 293.0 | Up | 05:25:42 - 05:49:15 | 740 |
| Wenatchee | 05:37:25 | -41.3 | Dark | Down | 50.0 | 291.9 | Up | 05:25:38 - 05:49:11 | 736 |
| Sisters | 05:37:28 | -42.2 | Dark | Down | 49.6 | 294.8 | Up | 05:25:42 - 05:49:15 | 732 |
| Susanville | 05:38:11 | -44.8 | Dark | Down | 47.1 | 299.0 | Up | 05:26:25 - 05:49:58 | 730 |
| Yakima | 05:37:28 | -41.6 | Dark | Down | 49.8 | 292.7 | Up | 05:25:42 - 05:49:15 | 727 |
| Maupin | 05:37:28 | -42.0 | Dark | Down | 49.6 | 294.0 | Up | 05:25:42 - 05:49:15 | 726 |
| Ellensburg | 05:37:28 | -41.4 | Dark | Down | 50.0 | 292.3 | Up | 05:25:42 - 05:49:15 | 726 |
| Goldendale | 05:37:28 | -41.9 | Dark | Down | 49.7 | 293.5 | Up | 05:25:42 - 05:49:15 | 724 |
| Gimple | 05:38:13 | -44.8 | Dark | Down | 47.1 | 299.2 | Up | 05:26:26 - 05:49:59 | 715 |
| Greenville | 05:38:13 | -44.7 | Dark | Down | 47.1 | 299.2 | Up | 05:26:26 - 05:49:59 | 710 |
| Quincy | 05:38:14 | -44.9 | Dark | Down | 47.0 | 299.4 | Up | 05:26:28 - 05:50:01 | 709 |
| The Dalles | 05:37:28 | -41.8 | Dark | Down | 49.9 | 293.6 | Up | 05:25:42 - 05:49:15 | 708 |
| CPSLO | 05:38:44 | -47.2 | Dark | Down | 44.3 | 303.5 | Up | 05:26:58 - 05:50:31 | 703 |
| Fall River/Burney | 05:38:08 | -44.0 | Dark | Down | 47.9 | 298.2 | Up | 05:26:21 - 05:49:54 | 682 |
| Klamath Falls | 05:37:28 | -43.1 | Dark | Down | 48.8 | 296.9 | Up | 05:25:42 - 05:49:15 | -836 |
| Tulelake | 05:37:28 | -43.4 | Dark | Down | 48.5 | 297.3 | Up | 05:25:42 - 05:49:15 | -866 |
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 341275, (2017/02/18 05:36UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 33.13 164 Mirphak 03:24:19.4 +49:51:40 1.8 3.37 144 PPM 046236 03:29:26.4 +46:56:16 6.1 0.36 147 PPM 046251 03:30:21.2 +46:28:03 9.4 0.26 147 341275 03:28:59.5 +46:35:01 16.3 147 Positions are for J2000
Event circumstances last updated at 2016/12/28 20:37:35 UT
Marc W. Buie, Southwest Research Institute