Event between (135024) 01KO76 and star UC4-346-077749 with event index number of 109359
Geocentric closest approach at 2018/04/02 09:38:31 UTC
J2000 position of star is 15:55:00.1 -20:56:45
Equinox of date position of star is 15:56:03.1 -20:59:50
Stellar brightness R=16.4,
use SENSEUP=128
Star is 26 degrees from the moon.
Moon is 96% illuminated.
TNO apparent brightness V=23.4
[RECON map]
TNO is 44.2 AU from the Sun
and 43.5 AU from the Earth.
The TNO is moving 14.8
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 840 seconds.
The 1-sigma cross-track error in the shadow position is
3571 km.
The sky-plane scale is
31546.3 km/arcsec.
The TNO has an absolute magnitude Hv=6.9
Diameter=251.2 km assuming a 5% albedo -- 16.9 sec chord
Diameter=102.6 km assuming a 30% albedo -- 6.9 sec chord
Dynamical classification is 7:4EEE
Star training set for 135024, (2018/04/02 09:39UT) Object RA Dec mag sep mel Antares 16:30:31.8 -26:28:16 0.9 9.59 35 7Del Sco 16:01:24.9 -22:40:20 2.3 2.08 28 PPM 264922 15:58:44.7 -21:02:05 6.1 0.62 26 PPM 264848 15:55:52.8 -20:52:15 8.0 0.14 26 135024 15:56:04.3 -20:59:54 16.4 26 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
1.1 sigma about the mid-time.
The median site spacing is 10.8 km
RECON observability=0.8 and success probability=0.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 09:41:22 | -31.9 | Dark | Up | 17.4 | 158.3 | Really Low | 09:26:22 - 09:56:22 | 12003 |
| Tonasket | 09:41:22 | -32.1 | Dark | Up | 17.6 | 158.3 | Really Low | 09:26:22 - 09:56:22 | 11992 |
| Okanogan | 09:41:24 | -32.4 | Dark | Up | 17.9 | 158.1 | Really Low | 09:26:24 - 09:56:24 | 11974 |
| Brewster | 09:41:24 | -32.7 | Dark | Up | 18.1 | 157.9 | Really Low | 09:26:24 - 09:56:24 | 11956 |
| Manson/Chelan | 09:41:27 | -33.0 | Dark | Up | 18.2 | 157.6 | Really Low | 09:26:27 - 09:56:27 | 11938 |
| Entiat | 09:41:27 | -33.2 | Dark | Up | 18.4 | 157.5 | Really Low | 09:26:27 - 09:56:27 | 11926 |
| Wenatchee | 09:41:28 | -33.5 | Dark | Up | 18.6 | 157.3 | Really Low | 09:26:28 - 09:56:28 | 11912 |
| Ellensburg | 09:41:29 | -33.9 | Dark | Up | 18.9 | 157.1 | Really Low | 09:26:29 - 09:56:29 | 11887 |
| Pasco | 09:41:25 | -34.1 | Dark | Up | 20.0 | 158.3 | Really Low | 09:26:25 - 09:56:25 | 11883 |
| PNWRO | 09:41:24 | -34.2 | Dark | Up | 20.2 | 158.5 | Low | 09:26:24 - 09:56:24 | 11875 |
| Yakima | 09:41:31 | -34.3 | Dark | Up | 19.3 | 157.0 | Really Low | 09:26:31 - 09:56:31 | 11866 |
| George/Umatilla | 09:41:26 | -34.4 | Dark | Up | 20.2 | 158.1 | Low | 09:26:26 - 09:56:26 | 11861 |
| Toppenish/White Swan | 09:41:31 | -34.4 | Dark | Up | 19.5 | 157.1 | Really Low | 09:26:31 - 09:56:31 | 11860 |
| Niwot | 09:40:21 | -32.4 | Dark | Up | 28.5 | 171.4 | Low | 09:25:21 - 09:55:21 | 11855 |
| Goldendale | 09:41:33 | -35.0 | Dark | Up | 19.9 | 156.7 | Really Low | 09:26:33 - 09:56:33 | 11822 |
| The Dalles | 09:41:35 | -35.3 | Dark | Up | 20.0 | 156.3 | Low | 09:26:35 - 09:56:35 | 11802 |
| Maupin | 09:41:35 | -35.7 | Dark | Up | 20.4 | 156.3 | Low | 09:26:35 - 09:56:35 | 11782 |
| Madras/Culver | 09:41:36 | -36.1 | Dark | Up | 20.9 | 156.2 | Low | 09:26:36 - 09:56:36 | 11753 |
| Redmond | 09:41:36 | -36.5 | Dark | Up | 21.2 | 156.1 | Low | 09:26:36 - 09:56:36 | 11732 |
| Sisters | 09:41:39 | -36.6 | Dark | Up | 21.1 | 155.8 | Low | 09:26:39 - 09:56:39 | 11724 |
| Bend | 09:41:38 | -36.7 | Dark | Up | 21.4 | 156.0 | Low | 09:26:38 - 09:56:38 | 11717 |
| Oregon Observatory | 09:41:37 | -36.9 | Dark | Up | 21.5 | 155.8 | Low | 09:26:37 - 09:56:37 | 11705 |
| La Pine/Gilchrist | 09:41:37 | -37.1 | Dark | Up | 21.7 | 155.7 | Low | 09:26:37 - 09:56:37 | 11692 |
| North Lake | 09:41:36 | -37.3 | Dark | Up | 22.3 | 156.2 | Low | 09:26:36 - 09:56:36 | 11683 |
| Paisley | 09:41:36 | -37.6 | Dark | Up | 22.9 | 156.5 | Low | 09:26:36 - 09:56:36 | 11661 |
| Lakeview | 09:41:35 | -38.0 | Dark | Up | 23.4 | 156.6 | Low | 09:26:35 - 09:56:35 | 11637 |
| Chiloquin | 09:41:41 | -38.2 | Dark | Up | 22.6 | 155.2 | Low | 09:26:41 - 09:56:41 | 11622 |
| Cedarville | 09:41:33 | -38.5 | Dark | Up | 24.0 | 156.6 | Low | 09:26:33 - 09:56:33 | 11604 |
| Klamath Falls | 09:41:43 | -38.5 | Dark | Up | 22.9 | 155.2 | Low | 09:26:43 - 09:56:43 | 11604 |
| Tulelake | 09:41:41 | -38.6 | Dark | Up | 23.3 | 155.5 | Low | 09:26:41 - 09:56:41 | 11596 |
| Fall River/Burney | 09:41:43 | -39.3 | Dark | Up | 24.1 | 155.4 | Low | 09:26:43 - 09:56:43 | 11546 |
| Susanville | 09:41:39 | -39.6 | Dark | Up | 24.9 | 156.0 | Low | 09:26:39 - 09:56:39 | 11527 |
| Gimple | 09:41:40 | -39.9 | Dark | Up | 25.1 | 155.7 | Low | 09:26:40 - 09:56:40 | 11505 |
| Greenville | 09:41:42 | -39.9 | Dark | Up | 25.1 | 155.6 | Low | 09:26:42 - 09:56:42 | 11503 |
| Reno | 09:41:35 | -40.0 | Dark | Up | 26.0 | 156.6 | Low | 09:26:35 - 09:56:35 | 11496 |
| Portola | 09:41:40 | -40.0 | Dark | Up | 25.5 | 156.0 | Low | 09:26:40 - 09:56:40 | 11496 |
| Quincy | 09:41:40 | -40.1 | Dark | Up | 25.3 | 155.6 | Low | 09:26:40 - 09:56:40 | 11491 |
| Yerington | 09:41:34 | -40.2 | Dark | Up | 26.7 | 157.1 | Low | 09:26:34 - 09:56:34 | 11479 |
| Carson City | 09:41:37 | -40.3 | Dark | Up | 26.3 | 156.6 | Low | 09:26:37 - 09:56:37 | 11475 |
| Tonopah | 09:41:25 | -40.1 | Dark | Up | 28.1 | 158.9 | Low | 09:26:25 - 09:56:25 | 11471 |
| Hawthorne | 09:41:31 | -40.3 | Dark | Up | 27.3 | 157.6 | Low | 09:26:31 - 09:56:31 | 11464 |
| Gardnerville | 09:41:36 | -40.5 | Dark | Up | 26.5 | 156.5 | Low | 09:26:36 - 09:56:36 | 11461 |
| Lee Vining | 09:41:35 | -41.0 | Dark | Up | 27.6 | 157.0 | Low | 09:26:35 - 09:56:35 | 11417 |
| Indian Springs | 09:41:19 | -40.5 | Dark | Up | 29.9 | 160.1 | Low | 09:26:19 - 09:56:19 | 11416 |
| Beatty | 09:41:23 | -40.8 | Dark | Up | 29.3 | 159.1 | Low | 09:26:23 - 09:56:23 | 11410 |
| Henderson | 09:41:15 | -40.6 | Dark | Up | 30.6 | 160.7 | Up | 09:26:15 - 09:56:15 | 11399 |
| Bishop | 09:41:30 | -41.2 | Dark | Up | 28.4 | 157.6 | Low | 09:26:30 - 09:56:30 | 11398 |
| Patrick | 09:41:09 | -40.5 | Dark | Up | 31.5 | 161.7 | Up | 09:26:09 - 09:56:09 | 11386 |
| DCO | 09:41:04 | -40.3 | Dark | Up | 31.9 | 162.4 | Up | 09:26:04 - 09:56:04 | 11383 |
| Kingman/Dolan Springs | 09:41:09 | -40.7 | Dark | Up | 31.6 | 161.5 | Up | 09:26:09 - 09:56:09 | 11367 |
| Searchlight/Boulder City | 09:41:12 | -41.0 | Dark | Up | 31.2 | 160.6 | Up | 09:26:12 - 09:56:12 | 11363 |
| Lone Pine | 09:41:30 | -41.6 | Dark | Up | 29.2 | 157.7 | Low | 09:26:30 - 09:56:30 | 11358 |
| Laughlin/Bullhead City | 09:41:13 | -41.0 | Dark | Up | 31.5 | 161.0 | Up | 09:26:13 - 09:56:13 | 11353 |
| Mohave Valley | 09:41:12 | -41.2 | Dark | Up | 31.8 | 160.9 | Up | 09:26:12 - 09:56:12 | 11335 |
| Lake Havasu City | 09:41:11 | -41.4 | Dark | Up | 32.2 | 161.1 | Up | 09:26:11 - 09:56:11 | 11315 |
| Parker | 09:41:11 | -41.6 | Dark | Up | 32.6 | 161.0 | Up | 09:26:11 - 09:56:11 | 11292 |
| Blythe | 09:41:12 | -42.2 | Dark | Up | 33.0 | 160.6 | Up | 09:26:12 - 09:56:12 | 11249 |
| CPSLO | 09:41:44 | -43.9 | Dark | Up | 29.6 | 154.9 | Low | 09:26:44 - 09:56:44 | 11204 |
| Idyllwild | 09:41:24 | -43.2 | Dark | Up | 32.3 | 158.5 | Up | 09:26:24 - 09:56:24 | 11203 |
| Calipatria | 09:41:18 | -43.1 | Dark | Up | 33.2 | 159.5 | Up | 09:26:18 - 09:56:18 | 11192 |
| Yuma | 09:41:12 | -42.9 | Dark | Up | 33.8 | 160.4 | Up | 09:26:12 - 09:56:12 | 11185 |
| Wildwood | 09:41:33 | -43.9 | Dark | Up | 31.4 | 156.6 | Up | 09:26:33 - 09:56:33 | 11178 |
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 135024, (2018/04/02 09:39UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 9.59 35 7Del Sco 16:00:20.0 -22:37:18 2.3 2.08 28 PPM 264922 15:57:40.5 -20:58:59 6.1 0.62 26 PPM 264848 15:54:48.7 -20:49:05 8.0 0.14 26 135024 15:55:00.1 -20:56:45 16.4 26 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:24:29 UT
Marc W. Buie, Southwest Research Institute