Event between 01KD77 and star UC4-342-142369 with event index number of 122523
Geocentric closest approach at 2017/08/23 06:21:48 UTC
J2000 position of star is 18:28:06.0 -21:46:02
Equinox of date position of star is 18:29:08.6 -21:45:19
Stellar brightness R=14.2,
use SENSEUP=64
Star is 107 degrees from the moon.
Moon is 3% illuminated.
TNO apparent brightness V=21.3
[RECON map]
TNO is 36.3 AU from the Sun
and 35.7 AU from the Earth.
The TNO is moving 12.1
km/sec on the sky relative to the star, or,
1.7 arcsec/hr.
The 1-sigma error in the time of the event is 522 seconds.
The 1-sigma cross-track error in the shadow position is
2044 km.
The sky-plane scale is
25907.7 km/arcsec.
The TNO has an absolute magnitude Hv=5.6
Diameter=461.3 km assuming a 5% albedo -- 38.2 sec chord
Diameter=188.3 km assuming a 30% albedo -- 15.6 sec chord
Dynamical classification is 3:2E
Star training set for 01KD77, (2017/08/23 06:22UT) Object RA Dec mag sep mel Antares 16:30:29.5 -26:28:11 0.9 27.42 80 Nunki 18:56:21.5 -26:16:24 2.0 7.68 113 21 Sgr 18:26:24.1 -20:31:51 4.1 1.38 106 PPM 268487 18:30:54.5 -20:56:23 8.3 0.91 107 PPM 268440 18:29:03.6 -21:34:39 8.9 0.18 107 01KD77 18:29:09.6 -21:45:18 14.2 107 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
1.7 sigma about the mid-time.
The median site spacing is 18.2 km
RECON observability=0.6 and success probability=0.5%
Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
Oroville | 06:18:07 | -25.6 | Dark | Down | 14.5 | 208.5 | Really Low | 06:03:07 - 06:33:07 | 7827 |
Tonasket | 06:18:06 | -25.8 | Dark | Down | 14.7 | 208.5 | Really Low | 06:03:06 - 06:33:06 | 7817 |
Okanogan | 06:18:05 | -26.1 | Dark | Down | 15.0 | 208.4 | Really Low | 06:03:05 - 06:33:05 | 7804 |
Brewster | 06:18:06 | -26.3 | Dark | Down | 15.3 | 208.3 | Really Low | 06:03:06 - 06:33:06 | 7796 |
Manson/Chelan | 06:18:07 | -26.3 | Dark | Down | 15.6 | 208.0 | Really Low | 06:03:07 - 06:33:07 | 7794 |
Entiat | 06:18:06 | -26.5 | Dark | Down | 15.8 | 207.9 | Really Low | 06:03:06 - 06:33:06 | 7785 |
Wenatchee | 06:18:06 | -26.7 | Dark | Down | 16.1 | 207.9 | Really Low | 06:03:06 - 06:33:06 | 7775 |
Ellensburg | 06:18:07 | -27.0 | Dark | Down | 16.5 | 207.7 | Really Low | 06:03:07 - 06:33:07 | 7760 |
Yakima | 06:18:06 | -27.3 | Dark | Down | 16.9 | 207.8 | Really Low | 06:03:06 - 06:33:06 | 7740 |
Toppenish/White Swan | 06:18:04 | -27.6 | Dark | Down | 17.0 | 207.9 | Really Low | 06:03:04 - 06:33:04 | 7726 |
Goldendale | 06:18:05 | -27.9 | Dark | Down | 17.7 | 207.6 | Really Low | 06:03:05 - 06:33:05 | 7708 |
The Dalles | 06:18:07 | -28.0 | Dark | Down | 18.0 | 207.3 | Really Low | 06:03:07 - 06:33:07 | 7704 |
Pasco | 06:17:58 | -28.1 | Dark | Down | 16.7 | 209.1 | Really Low | 06:02:58 - 06:32:58 | 7693 |
George/Umatilla | 06:17:58 | -28.3 | Dark | Down | 17.1 | 208.9 | Really Low | 06:02:58 - 06:32:58 | 7681 |
Maupin | 06:18:03 | -28.4 | Dark | Down | 18.3 | 207.5 | Really Low | 06:03:03 - 06:33:03 | 7681 |
PNWRO | 06:17:54 | -28.4 | Dark | Down | 16.9 | 209.3 | Really Low | 06:02:54 - 06:32:54 | 7676 |
Madras/Culver | 06:18:03 | -28.8 | Dark | Down | 18.8 | 207.5 | Really Low | 06:03:03 - 06:33:03 | 7654 |
Sisters | 06:18:05 | -28.9 | Dark | Down | 19.3 | 207.2 | Really Low | 06:03:05 - 06:33:05 | 7647 |
Redmond | 06:18:03 | -29.1 | Dark | Down | 19.1 | 207.5 | Really Low | 06:03:03 - 06:33:03 | 7637 |
Bend | 06:18:02 | -29.2 | Dark | Down | 19.4 | 207.4 | Really Low | 06:03:02 - 06:33:02 | 7629 |
Oregon Observatory | 06:18:03 | -29.3 | Dark | Down | 19.6 | 207.3 | Really Low | 06:03:03 - 06:33:03 | 7623 |
La Pine/Gilchrist | 06:18:03 | -29.5 | Dark | Down | 19.8 | 207.3 | Really Low | 06:03:03 - 06:33:03 | 7613 |
North Lake | 06:17:59 | -30.1 | Dark | Down | 20.0 | 207.9 | Really Low | 06:02:59 - 06:32:59 | 7577 |
Chiloquin | 06:18:02 | -30.3 | Dark | Down | 20.9 | 207.2 | Low | 06:03:02 - 06:33:02 | 7561 |
Klamath Falls | 06:18:01 | -30.6 | Dark | Down | 21.2 | 207.3 | Low | 06:03:01 - 06:33:01 | 7540 |
Paisley | 06:17:55 | -30.7 | Dark | Down | 20.3 | 208.4 | Low | 06:02:55 - 06:32:55 | 7539 |
Tulelake | 06:18:00 | -30.9 | Dark | Down | 21.3 | 207.6 | Low | 06:03:00 - 06:33:00 | 7519 |
Lakeview | 06:17:53 | -31.2 | Dark | Down | 20.7 | 208.6 | Low | 06:02:53 - 06:32:53 | 7507 |
Cedarville | 06:17:51 | -31.8 | Dark | Down | 21.2 | 208.9 | Low | 06:02:51 - 06:32:51 | 7466 |
Fall River/Burney | 06:17:55 | -31.7 | Dark | Down | 22.1 | 207.9 | Low | 06:02:55 - 06:32:55 | 7465 |
Susanville | 06:17:51 | -32.6 | Dark | Down | 22.4 | 208.7 | Low | 06:02:51 - 06:32:51 | 7412 |
Greenville | 06:17:52 | -32.7 | Dark | Down | 22.7 | 208.4 | Low | 06:02:52 - 06:32:52 | 7403 |
Gimple | 06:17:51 | -32.7 | Dark | Down | 22.7 | 208.5 | Low | 06:02:51 - 06:32:51 | 7401 |
Quincy | 06:17:52 | -32.9 | Dark | Down | 22.9 | 208.5 | Low | 06:02:52 - 06:32:52 | 7391 |
Portola | 06:17:48 | -33.2 | Dark | Down | 22.9 | 208.9 | Low | 06:02:48 - 06:32:48 | 7373 |
Reno | 06:17:44 | -33.6 | Dark | Down | 22.8 | 209.6 | Low | 06:02:44 - 06:32:44 | 7341 |
Carson City | 06:17:43 | -33.9 | Dark | Down | 23.2 | 209.7 | Low | 06:02:43 - 06:32:43 | 7319 |
Gardnerville | 06:17:43 | -34.2 | Dark | Down | 23.3 | 209.8 | Low | 06:02:43 - 06:32:43 | 7303 |
Yerington | 06:17:39 | -34.4 | Dark | Down | 23.1 | 210.3 | Low | 06:02:39 - 06:32:39 | 7292 |
Hawthorne | 06:17:34 | -35.0 | Dark | Down | 23.3 | 210.8 | Low | 06:02:34 - 06:32:34 | 7251 |
Lee Vining | 06:17:36 | -35.3 | Dark | Down | 24.0 | 210.5 | Low | 06:02:36 - 06:32:36 | 7228 |
Tonopah | 06:17:26 | -35.9 | Dark | Down | 23.1 | 212.2 | Low | 06:02:26 - 06:32:26 | 7187 |
Bishop | 06:17:31 | -36.1 | Dark | Down | 24.2 | 211.3 | Low | 06:02:31 - 06:32:31 | 7172 |
Lone Pine | 06:17:28 | -36.8 | Dark | Down | 24.7 | 211.8 | Low | 06:02:28 - 06:32:28 | 7114 |
Beatty | 06:17:20 | -37.1 | Dark | Down | 23.9 | 212.9 | Low | 06:02:20 - 06:32:20 | 7101 |
CPSLO | 06:17:41 | -36.9 | Dark | Down | 26.9 | 209.8 | Low | 06:02:41 - 06:32:41 | 7093 |
Indian Springs | 06:17:13 | -37.8 | Dark | Down | 23.7 | 213.9 | Low | 06:02:13 - 06:32:13 | 7051 |
Henderson | 06:17:09 | -38.5 | Dark | Down | 23.8 | 214.6 | Low | 06:02:09 - 06:32:09 | 6997 |
Niwot | 06:16:29 | -37.4 | Dark | Down | 16.0 | 221.8 | Really Low | 06:01:29 - 06:31:29 | 6997 |
Wildwood | 06:17:26 | -38.8 | Dark | Down | 27.1 | 211.9 | Low | 06:02:26 - 06:32:26 | 6960 |
Searchlight/Boulder City | 06:17:06 | -39.0 | Dark | Down | 24.3 | 214.8 | Low | 06:02:06 - 06:32:06 | 6958 |
Laughlin/Bullhead City | 06:17:03 | -39.4 | Dark | Down | 24.4 | 215.2 | Low | 06:02:03 - 06:32:03 | 6927 |
Patrick | 06:16:59 | -39.5 | Dark | Down | 23.9 | 215.7 | Low | 06:01:59 - 06:31:59 | 6925 |
Kingman/Dolan Springs | 06:17:01 | -39.6 | Dark | Down | 24.1 | 215.6 | Low | 06:02:01 - 06:32:01 | 6915 |
Mohave Valley | 06:17:02 | -39.7 | Dark | Down | 24.6 | 215.3 | Low | 06:02:02 - 06:32:02 | 6909 |
Idyllwild | 06:17:13 | -39.9 | Dark | Down | 26.5 | 213.7 | Low | 06:02:13 - 06:32:13 | 6887 |
DCO | 06:16:54 | -40.0 | Dark | Down | 23.8 | 216.4 | Low | 06:01:54 - 06:31:54 | 6885 |
Lake Havasu City | 06:17:01 | -40.1 | Dark | Down | 24.8 | 215.6 | Low | 06:02:01 - 06:32:01 | 6874 |
Parker | 06:17:00 | -40.4 | Dark | Down | 25.1 | 215.7 | Low | 06:02:00 - 06:32:00 | 6849 |
Blythe | 06:17:01 | -40.8 | Dark | Down | 25.7 | 215.6 | Low | 06:02:01 - 06:32:01 | 6820 |
Calipatria | 06:17:05 | -40.9 | Dark | Down | 26.5 | 214.9 | Low | 06:02:05 - 06:32:05 | 6811 |
Yuma | 06:16:58 | -41.6 | Dark | Down | 26.4 | 215.8 | Low | 06:01:58 - 06:31:58 | 6756 |
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 01KD77, (2017/08/23 06:22UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 27.42 80 Nunki 18:55:15.9 -26:17:49 2.0 7.68 113 21 Sgr 18:25:21.1 -20:32:31 4.1 1.38 106 PPM 268487 18:29:51.3 -20:57:10 8.3 0.91 107 PPM 268440 18:28:00.1 -21:35:23 8.9 0.18 107 01KD77 18:28:06.0 -21:46:02 14.2 107 Positions are for J2000
Event circumstances last updated at 2017/05/13 17:32:22 UT
Marc W. Buie, Southwest Research Institute