Event between 04KV18 and star UC4-366-085959 with event index number of 123784
Geocentric closest approach at 2017/07/24 04:51:18 UTC
J2000 position of star is 17:21:34.6 -16:49:16
Equinox of date position of star is 17:22:35.0 -16:50:13
Stellar brightness R=16.4,
use SENSEUP=128
Star is 128 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=23.8
[RECON map]
TNO is 29.4 AU from the Sun
and 28.6 AU from the Earth.
The TNO is moving 16.8
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 334 seconds.
The 1-sigma cross-track error in the shadow position is
1074 km.
The sky-plane scale is
20734.5 km/arcsec.
The TNO has an absolute magnitude Hv=9.0
Diameter=95.5 km assuming a 5% albedo -- 5.7 sec chord
Diameter=39.0 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is CENTAURR
Star training set for 04KV18, (2017/07/24 04:51UT) Object RA Dec mag sep mel Antares 16:30:29.2 -26:28:10 0.9 15.45 117 35Eta Oph 17:11:23.2 -15:44:44 2.6 2.90 125 PPM 232892 17:19:20.0 -16:19:45 5.9 0.93 127 PPM 232993 17:23:36.7 -17:43:09 8.5 0.91 129 PPM 232969 17:22:28.0 -17:01:12 9.6 0.19 128 04KV18 17:22:35.6 -16:50:14 16.4 129 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
2.7 sigma about the mid-time.
The median site spacing is 20.3 km
RECON observability=0.4 and success probability=0.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 04:51:42 | -9.0 | CT | Down | 24.1 | 175.0 | Low | 04:36:42 - 05:06:42 | 6260 |
| Tonasket | 04:51:41 | -9.2 | CT | Down | 24.3 | 175.0 | Low | 04:36:41 - 05:06:41 | 6249 |
| Okanogan | 04:51:43 | -9.4 | CT | Down | 24.7 | 174.8 | Low | 04:36:43 - 05:06:43 | 6233 |
| Brewster | 04:51:44 | -9.4 | CT | Down | 24.9 | 174.6 | Low | 04:36:44 - 05:06:44 | 6220 |
| Manson/Chelan | 04:51:45 | -9.4 | CT | Down | 25.1 | 174.2 | Low | 04:36:45 - 05:06:45 | 6209 |
| Entiat | 04:51:45 | -9.5 | CT | Down | 25.3 | 174.1 | Low | 04:36:45 - 05:06:45 | 6198 |
| Wenatchee | 04:51:46 | -9.7 | CT | Down | 25.6 | 174.0 | Low | 04:36:46 - 05:06:46 | 6186 |
| Ellensburg | 04:51:47 | -9.8 | CT | Down | 26.0 | 173.7 | Low | 04:36:47 - 05:06:47 | 6165 |
| Yakima | 04:51:48 | -10.1 | CT | Down | 26.4 | 173.7 | Low | 04:36:48 - 05:06:48 | 6145 |
| Toppenish/White Swan | 04:51:47 | -10.4 | CT | Down | 26.6 | 173.9 | Low | 04:36:47 - 05:06:47 | 6134 |
| Pasco | 04:51:42 | -11.1 | CT | Down | 26.8 | 175.2 | Low | 04:36:42 - 05:06:42 | 6131 |
| PNWRO | 04:51:40 | -11.3 | CT | Down | 27.1 | 175.4 | Low | 04:36:40 - 05:06:40 | 6120 |
| George/Umatilla | 04:51:42 | -11.2 | CT | Down | 27.1 | 174.9 | Low | 04:36:42 - 05:06:42 | 6114 |
| Goldendale | 04:51:49 | -10.5 | CT | Down | 27.1 | 173.4 | Low | 04:36:49 - 05:06:49 | 6105 |
| The Dalles | 04:51:51 | -10.5 | CT | Down | 27.3 | 173.0 | Low | 04:36:51 - 05:06:51 | 6092 |
| Maupin | 04:51:51 | -10.8 | CT | Down | 27.7 | 173.1 | Low | 04:36:51 - 05:06:51 | 6071 |
| Madras/Culver | 04:51:51 | -11.2 | CT | Down | 28.3 | 173.0 | Low | 04:36:51 - 05:06:51 | 6042 |
| Redmond | 04:51:52 | -11.4 | CT | Down | 28.6 | 172.9 | Low | 04:36:52 - 05:06:52 | 6023 |
| Sisters | 04:51:53 | -11.2 | CT | Down | 28.6 | 172.5 | Low | 04:36:53 - 05:06:53 | 6023 |
| Bend | 04:51:52 | -11.5 | CT | Down | 28.8 | 172.8 | Low | 04:36:52 - 05:06:52 | 6011 |
| Oregon Observatory | 04:51:53 | -11.5 | CT | Down | 29.0 | 172.6 | Low | 04:36:53 - 05:06:53 | 6001 |
| La Pine/Gilchrist | 04:51:53 | -11.6 | CT | Down | 29.2 | 172.5 | Low | 04:36:53 - 05:06:53 | 5990 |
| North Lake | 04:51:50 | -12.2 | AT | Down | 29.7 | 173.1 | Low | 04:36:50 - 05:06:50 | 5968 |
| Paisley | 04:51:50 | -12.8 | AT | Down | 30.2 | 173.5 | Up | 04:36:50 - 05:06:50 | 5938 |
| Chiloquin | 04:51:56 | -12.2 | AT | Down | 30.2 | 172.1 | Up | 04:36:56 - 05:06:56 | 5927 |
| Lakeview | 04:51:49 | -13.3 | AT | Down | 30.8 | 173.7 | Up | 04:36:49 - 05:06:49 | 5910 |
| Klamath Falls | 04:51:56 | -12.5 | AT | Down | 30.6 | 172.1 | Up | 04:36:56 - 05:06:56 | 5907 |
| Tulelake | 04:51:54 | -12.8 | AT | Down | 30.9 | 172.4 | Up | 04:36:54 - 05:06:54 | 5893 |
| Cedarville | 04:51:48 | -13.8 | AT | Down | 31.4 | 173.8 | Up | 04:36:48 - 05:06:48 | 5873 |
| Fall River/Burney | 04:51:54 | -13.5 | AT | Down | 31.8 | 172.4 | Up | 04:36:54 - 05:06:54 | 5840 |
| Susanville | 04:51:51 | -14.3 | AT | Down | 32.5 | 173.2 | Up | 04:36:51 - 05:06:51 | 5805 |
| Niwot | 04:50:34 | -22.1 | Dark | Down | 32.4 | 190.4 | Up | 04:35:34 - 05:05:34 | 5788 |
| Gimple | 04:51:52 | -14.4 | AT | Down | 32.8 | 173.0 | Up | 04:36:52 - 05:06:52 | 5787 |
| Greenville | 04:51:52 | -14.3 | AT | Down | 32.7 | 172.9 | Up | 04:36:52 - 05:06:52 | 5787 |
| Quincy | 04:51:52 | -14.5 | AT | Down | 32.9 | 172.8 | Up | 04:36:52 - 05:06:52 | 5775 |
| Portola | 04:51:51 | -14.8 | AT | Down | 33.1 | 173.4 | Up | 04:36:51 - 05:06:51 | 5769 |
| Reno | 04:51:47 | -15.4 | AT | Down | 33.4 | 174.1 | Up | 04:36:47 - 05:06:47 | 5754 |
| Carson City | 04:51:47 | -15.6 | AT | Down | 33.8 | 174.1 | Up | 04:36:47 - 05:06:47 | 5732 |
| Yerington | 04:51:44 | -16.1 | AT | Down | 34.0 | 174.8 | Up | 04:36:44 - 05:06:44 | 5722 |
| Gardnerville | 04:51:47 | -15.8 | AT | Down | 34.0 | 174.1 | Up | 04:36:47 - 05:06:47 | 5717 |
| Hawthorne | 04:51:41 | -16.7 | AT | Down | 34.5 | 175.4 | Up | 04:36:41 - 05:06:41 | 5694 |
| Tonopah | 04:51:34 | -17.8 | AT | Down | 35.1 | 177.0 | Up | 04:36:34 - 05:06:34 | 5668 |
| Lee Vining | 04:51:43 | -16.8 | AT | Down | 35.1 | 174.8 | Up | 04:36:43 - 05:06:43 | 5657 |
| Bishop | 04:51:40 | -17.6 | AT | Down | 35.7 | 175.6 | Up | 04:36:40 - 05:06:40 | 5620 |
| Beatty | 04:51:32 | -18.9 | Dark | Down | 36.2 | 177.4 | Up | 04:36:32 - 05:06:32 | 5593 |
| Indian Springs | 04:51:27 | -19.7 | Dark | Down | 36.6 | 178.7 | Up | 04:36:27 - 05:06:27 | 5573 |
| Lone Pine | 04:51:39 | -18.4 | Dark | Down | 36.5 | 175.9 | Up | 04:36:39 - 05:06:39 | 5571 |
| Henderson | 04:51:22 | -20.5 | Dark | Down | 37.1 | 179.5 | Up | 04:36:22 - 05:06:22 | 5538 |
| Searchlight/Boulder City | 04:51:23 | -20.9 | Dark | Down | 37.7 | 179.6 | Up | 04:36:23 - 05:06:23 | 5500 |
| Patrick | 04:51:17 | -21.5 | Dark | Down | 37.8 | 180.8 | Up | 04:36:17 - 05:06:17 | 5497 |
| Kingman/Dolan Springs | 04:51:18 | -21.6 | Dark | Down | 38.0 | 180.6 | Up | 04:36:18 - 05:06:18 | 5481 |
| Laughlin/Bullhead City | 04:51:21 | -21.3 | Dark | Down | 38.0 | 180.0 | Up | 04:36:21 - 05:06:21 | 5479 |
| DCO | 04:51:13 | -22.2 | Dark | Down | 38.1 | 181.7 | Up | 04:36:13 - 05:06:13 | 5476 |
| CPSLO | 04:51:53 | -17.7 | AT | Down | 37.6 | 172.8 | Up | 04:36:53 - 05:06:53 | 5475 |
| Mohave Valley | 04:51:20 | -21.5 | Dark | Down | 38.3 | 180.0 | Up | 04:36:20 - 05:06:20 | 5460 |
| Lake Havasu City | 04:51:19 | -22.0 | Dark | Down | 38.7 | 180.3 | Up | 04:36:19 - 05:06:19 | 5433 |
| Parker | 04:51:19 | -22.2 | Dark | Down | 39.0 | 180.3 | Up | 04:36:19 - 05:06:19 | 5408 |
| Wildwood | 04:51:42 | -19.8 | Dark | Down | 38.9 | 175.1 | Up | 04:36:42 - 05:06:42 | 5398 |
| Idyllwild | 04:51:32 | -21.1 | Dark | Down | 39.4 | 177.4 | Up | 04:36:32 - 05:06:32 | 5378 |
| Blythe | 04:51:21 | -22.4 | Dark | Down | 39.6 | 180.0 | Up | 04:36:21 - 05:06:21 | 5371 |
| Calipatria | 04:51:26 | -22.2 | Dark | Down | 40.0 | 178.8 | Up | 04:36:26 - 05:06:26 | 5335 |
| Yuma | 04:51:21 | -23.1 | Dark | Down | 40.5 | 179.9 | Up | 04:36:21 - 05:06:21 | 5305 |
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 04KV18, (2017/07/24 04:51UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 15.45 117 35Eta Oph 17:10:22.7 -15:43:29 2.6 2.90 125 PPM 232892 17:18:19.3 -16:18:42 5.9 0.93 127 PPM 232993 17:22:35.3 -17:42:13 8.5 0.91 129 PPM 232969 17:21:26.9 -17:00:14 9.6 0.19 128 04KV18 17:21:34.6 -16:49:16 16.4 128 Positions are for J2000
Event circumstances last updated at 2017/05/14 18:35:44 UT
Marc W. Buie, Southwest Research Institute