Event between (10370) Hylonome and star UC4-356-144902 with event index number of 73794
Geocentric closest approach at 2017/06/02 06:15:53 UTC
J2000 position of star is 18:29:11.4 -18:59:30
Equinox of date position of star is 18:30:11.2 -18:58:46
Stellar brightness R=15.0
Star is 106 degrees from the moon.
Moon is 58% illuminated.
TNO apparent brightness V=22.4
[RECON map]
TNO is 23.7 AU from the Sun
and 22.8 AU from the Earth.
The TNO is moving 20.4
km/sec on the sky relative to the star, or,
4.4 arcsec/hr.
The 1-sigma error in the time of the event is 874 seconds.
The 1-sigma cross-track error in the shadow position is
1604 km.
The sky-plane scale is
16507.8 km/arcsec.
The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 5.6 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is CENTAURR
Star training set for 10370, (2017/06/02 06:16UT) Object RA Dec mag sep mel Antares 16:30:28.7 -26:28:09 0.9 28.53 79 Nunki 18:56:20.6 -26:16:25 2.0 9.46 112 PPM 234623 18:31:13.3 -18:42:59 5.5 0.35 106 PPM 234550 18:28:13.5 -18:56:31 8.4 0.47 106 PPM 234596 18:30:01.4 -18:57:01 9.0 0.05 106 10370 18:30:12.9 -18:58:45 15.0 106 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
1.0 sigma about the mid-time.
The median site spacing is 20.5 km
RECON observability=0.2 and success probability=0.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 06:18:30 | -15.6 | AT | Up | 8.3 | 131.9 | Really Low | 06:03:30 - 06:33:30 | 7650 |
| Tonasket | 06:18:31 | -15.8 | AT | Up | 8.4 | 131.9 | Really Low | 06:03:31 - 06:33:31 | 7638 |
| Okanogan | 06:18:32 | -16.1 | AT | Up | 8.6 | 131.7 | Really Low | 06:03:32 - 06:33:32 | 7618 |
| Brewster | 06:18:34 | -16.3 | AT | Up | 8.7 | 131.5 | Really Low | 06:03:34 - 06:33:34 | 7600 |
| Manson/Chelan | 06:18:35 | -16.4 | AT | Up | 8.6 | 131.2 | Really Low | 06:03:35 - 06:33:35 | 7582 |
| Entiat | 06:18:36 | -16.6 | AT | Up | 8.7 | 131.1 | Really Low | 06:03:36 - 06:33:36 | 7569 |
| Wenatchee | 06:18:37 | -16.8 | AT | Up | 8.9 | 131.0 | Really Low | 06:03:37 - 06:33:37 | 7554 |
| Ellensburg | 06:18:39 | -17.1 | AT | Up | 9.0 | 130.8 | Really Low | 06:03:39 - 06:33:39 | 7527 |
| Pasco | 06:18:38 | -18.2 | Dark | Up | 10.2 | 131.8 | Really Low | 06:03:38 - 06:33:38 | 7513 |
| Yakima | 06:18:40 | -17.5 | AT | Up | 9.3 | 130.7 | Really Low | 06:03:40 - 06:33:40 | 7504 |
| PNWRO | 06:18:38 | -18.5 | Dark | Up | 10.5 | 132.0 | Really Low | 06:03:38 - 06:33:38 | 7504 |
| Toppenish/White Swan | 06:18:40 | -17.7 | AT | Up | 9.5 | 130.8 | Really Low | 06:03:40 - 06:33:40 | 7496 |
| George/Umatilla | 06:18:39 | -18.4 | Dark | Up | 10.4 | 131.6 | Really Low | 06:03:39 - 06:33:39 | 7490 |
| Goldendale | 06:18:43 | -18.1 | Dark | Up | 9.6 | 130.4 | Really Low | 06:03:43 - 06:33:43 | 7457 |
| The Dalles | 06:18:45 | -18.2 | Dark | Up | 9.6 | 130.1 | Really Low | 06:03:45 - 06:33:45 | 7436 |
| Maupin | 06:18:46 | -18.6 | Dark | Up | 9.9 | 130.2 | Really Low | 06:03:46 - 06:33:46 | 7415 |
| Niwot | 06:18:14 | -27.0 | Dark | Up | 21.6 | 142.3 | Low | 06:03:14 - 06:33:14 | 7401 |
| Madras/Culver | 06:18:47 | -19.1 | Dark | Up | 10.3 | 130.0 | Really Low | 06:03:47 - 06:33:47 | 7382 |
| Redmond | 06:18:49 | -19.4 | Dark | Up | 10.5 | 130.0 | Really Low | 06:03:49 - 06:33:49 | 7360 |
| Sisters | 06:18:50 | -19.3 | Dark | Up | 10.2 | 129.7 | Really Low | 06:03:50 - 06:33:50 | 7354 |
| Bend | 06:18:50 | -19.5 | Dark | Up | 10.5 | 129.8 | Really Low | 06:03:50 - 06:33:50 | 7345 |
| Oregon Observatory | 06:18:51 | -19.7 | Dark | Up | 10.6 | 129.7 | Really Low | 06:03:51 - 06:33:51 | 7332 |
| La Pine/Gilchrist | 06:18:52 | -19.8 | Dark | Up | 10.7 | 129.6 | Really Low | 06:03:52 - 06:33:52 | 7318 |
| North Lake | 06:18:51 | -20.4 | Dark | Up | 11.3 | 130.0 | Really Low | 06:03:51 - 06:33:51 | 7305 |
| Paisley | 06:18:52 | -21.0 | Dark | Up | 11.8 | 130.2 | Really Low | 06:03:52 - 06:33:52 | 7278 |
| Lakeview | 06:18:53 | -21.5 | Dark | Up | 12.3 | 130.3 | Really Low | 06:03:53 - 06:33:53 | 7251 |
| Chiloquin | 06:18:56 | -20.7 | Dark | Up | 11.2 | 129.2 | Really Low | 06:03:56 - 06:33:56 | 7243 |
| Klamath Falls | 06:18:56 | -21.1 | Dark | Up | 11.4 | 129.2 | Really Low | 06:03:56 - 06:33:56 | 7224 |
| Cedarville | 06:18:55 | -22.2 | Dark | Up | 12.8 | 130.3 | Really Low | 06:03:55 - 06:33:55 | 7213 |
| Tulelake | 06:18:57 | -21.4 | Dark | Up | 11.8 | 129.4 | Really Low | 06:03:57 - 06:33:57 | 7213 |
| Fall River/Burney | 06:18:59 | -22.2 | Dark | Up | 12.4 | 129.3 | Really Low | 06:03:59 - 06:33:59 | 7157 |
| Susanville | 06:18:59 | -23.1 | Dark | Up | 13.3 | 129.8 | Really Low | 06:03:59 - 06:33:59 | 7132 |
| Gimple | 06:19:01 | -23.2 | Dark | Up | 13.3 | 129.6 | Really Low | 06:04:01 - 06:34:01 | 7109 |
| Greenville | 06:19:00 | -23.2 | Dark | Up | 13.3 | 129.5 | Really Low | 06:04:00 - 06:34:00 | 7108 |
| Portola | 06:19:00 | -23.7 | Dark | Up | 13.8 | 129.8 | Really Low | 06:04:00 - 06:34:00 | 7097 |
| Quincy | 06:19:01 | -23.4 | Dark | Up | 13.4 | 129.5 | Really Low | 06:04:01 - 06:34:01 | 7094 |
| Reno | 06:18:59 | -24.1 | Dark | Up | 14.3 | 130.3 | Really Low | 06:03:59 - 06:33:59 | 7093 |
| Yerington | 06:18:59 | -24.8 | Dark | Up | 15.1 | 130.6 | Really Low | 06:03:59 - 06:33:59 | 7070 |
| Carson City | 06:19:00 | -24.4 | Dark | Up | 14.6 | 130.2 | Really Low | 06:04:00 - 06:34:00 | 7070 |
| Gardnerville | 06:19:01 | -24.7 | Dark | Up | 14.7 | 130.2 | Really Low | 06:04:01 - 06:34:01 | 7054 |
| Hawthorne | 06:18:59 | -25.4 | Dark | Up | 15.7 | 131.0 | Really Low | 06:03:59 - 06:33:59 | 7050 |
| Tonopah | 06:18:56 | -26.3 | Dark | Up | 16.8 | 131.9 | Really Low | 06:03:56 - 06:33:56 | 7049 |
| Lee Vining | 06:19:01 | -25.8 | Dark | Up | 15.8 | 130.5 | Really Low | 06:04:01 - 06:34:01 | 7002 |
| Beatty | 06:18:58 | -27.5 | Dark | Up | 17.9 | 132.0 | Really Low | 06:03:58 - 06:33:58 | 6979 |
| Indian Springs | 06:18:55 | -28.1 | Dark | Up | 18.7 | 132.8 | Really Low | 06:03:55 - 06:33:55 | 6979 |
| Bishop | 06:19:01 | -26.6 | Dark | Up | 16.6 | 130.9 | Really Low | 06:04:01 - 06:34:01 | 6976 |
| Henderson | 06:18:54 | -28.8 | Dark | Up | 19.5 | 133.2 | Really Low | 06:03:54 - 06:33:54 | 6955 |
| Patrick | 06:18:53 | -29.7 | Dark | Up | 20.6 | 133.9 | Low | 06:03:53 - 06:33:53 | 6935 |
| Lone Pine | 06:19:02 | -27.4 | Dark | Up | 17.3 | 131.0 | Really Low | 06:04:02 - 06:34:02 | 6931 |
| DCO | 06:18:51 | -30.2 | Dark | Up | 21.2 | 134.4 | Low | 06:03:51 - 06:33:51 | 6928 |
| Searchlight/Boulder City | 06:18:56 | -29.4 | Dark | Up | 19.9 | 133.1 | Really Low | 06:03:56 - 06:33:56 | 6917 |
| Kingman/Dolan Springs | 06:18:54 | -29.9 | Dark | Up | 20.6 | 133.7 | Low | 06:03:54 - 06:33:54 | 6915 |
| Laughlin/Bullhead City | 06:18:55 | -29.8 | Dark | Up | 20.3 | 133.3 | Low | 06:03:55 - 06:33:55 | 6902 |
| Mohave Valley | 06:18:56 | -30.0 | Dark | Up | 20.5 | 133.2 | Low | 06:03:56 - 06:33:56 | 6883 |
| Lake Havasu City | 06:18:56 | -30.5 | Dark | Up | 20.9 | 133.3 | Low | 06:03:56 - 06:33:56 | 6860 |
| Parker | 06:18:57 | -30.8 | Dark | Up | 21.2 | 133.2 | Low | 06:03:57 - 06:33:57 | 6835 |
| Blythe | 06:18:59 | -31.2 | Dark | Up | 21.4 | 132.8 | Low | 06:03:59 - 06:33:59 | 6791 |
| CPSLO | 06:19:12 | -27.7 | Dark | Up | 16.5 | 128.8 | Really Low | 06:04:12 - 06:34:12 | 6781 |
| Idyllwild | 06:19:05 | -30.4 | Dark | Up | 20.0 | 131.3 | Low | 06:04:05 - 06:34:05 | 6755 |
| Wildwood | 06:19:09 | -29.5 | Dark | Up | 18.6 | 130.0 | Really Low | 06:04:09 - 06:34:09 | 6739 |
| Calipatria | 06:19:03 | -31.4 | Dark | Up | 21.1 | 132.0 | Low | 06:04:03 - 06:34:03 | 6735 |
| Yuma | 06:19:01 | -32.1 | Dark | Up | 22.0 | 132.5 | Low | 06:04:01 - 06:34:01 | 6722 |
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 10370, (2017/06/02 06:16UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:55 0.9 28.53 79 Nunki 18:55:15.9 -26:17:49 2.0 9.46 112 PPM 234623 18:30:11.9 -18:43:45 5.5 0.35 106 PPM 234550 18:27:12.0 -18:57:14 8.4 0.47 106 PPM 234596 18:28:59.9 -18:57:46 9.0 0.05 106 10370 18:29:11.4 -18:59:30 15.0 106 Positions are for J2000
Event circumstances last updated at 2016/12/09 18:49:08 UT
Marc W. Buie, Southwest Research Institute