Event between 13HU156 and star UC4-437-062542 with event index number of 133547
Geocentric closest approach at 2017/07/15 08:08:40 UTC
J2000 position of star is 16:19:46.1 -02:44:32
Equinox of date position of star is 16:20:38.4 -02:46:53
Stellar brightness R=16.1
Star is 120 degrees from the moon.
Moon is 66% illuminated.
TNO apparent brightness V=21.4
[RECON map]
TNO is 38.1 AU from the Sun
and 37.5 AU from the Earth.
The TNO is moving 15.5
km/sec on the sky relative to the star, or,
2.1 arcsec/hr.
The 1-sigma error in the time of the event is 242 seconds.
The 1-sigma cross-track error in the shadow position is
1709 km.
The sky-plane scale is
27182.8 km/arcsec.
The TNO has an absolute magnitude Hv=5.5
Diameter=474.3 km assuming a 5% albedo -- 30.5 sec chord
Diameter=193.6 km assuming a 30% albedo -- 12.4 sec chord
Dynamical classification is 3:2E
Star training set for 13HU156, (2017/07/15 08:09UT) Object RA Dec mag sep mel Antares 16:30:29.1 -26:28:10 0.9 23.80 114 1Del Oph 16:15:16.0 -03:44:18 2.7 1.66 122 2Eps Oph 16:19:15.1 -04:44:03 3.2 1.98 121 PPM 179793 16:23:33.7 -02:07:12 6.8 0.98 120 PPM 199533 16:20:31.9 -02:55:07 9.5 0.14 120 PPM 179783 16:20:31.3 -02:41:23 10.7 0.10 120 13HU156 16:20:41.1 -02:47:00 16.1 120 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
3.7 sigma about the mid-time.
The median site spacing is 20.9 km
RECON observability=1.0 and success probability=5.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 08:04:07 | -19.6 | Dark | Up | 22.7 | 236.0 | Low | 07:49:07 - 08:19:07 | 5085 |
| Tonasket | 08:04:05 | -19.8 | Dark | Up | 22.8 | 236.1 | Low | 07:49:05 - 08:19:05 | 5066 |
| Okanogan | 08:04:05 | -20.2 | Dark | Up | 23.1 | 236.1 | Low | 07:49:05 - 08:19:05 | 5040 |
| Brewster | 08:04:06 | -20.4 | Dark | Up | 23.3 | 236.0 | Low | 07:49:06 - 08:19:06 | 5020 |
| Manson/Chelan | 08:04:05 | -20.6 | Dark | Up | 23.7 | 235.8 | Low | 07:49:05 - 08:19:05 | 5007 |
| Entiat | 08:04:05 | -20.9 | Dark | Up | 23.8 | 235.8 | Low | 07:49:05 - 08:19:05 | 4990 |
| Wenatchee | 08:04:05 | -21.1 | Dark | Up | 24.0 | 235.8 | Low | 07:49:05 - 08:19:05 | 4970 |
| Ellensburg | 08:04:04 | -21.5 | Dark | Up | 24.4 | 235.7 | Low | 07:49:04 - 08:19:04 | 4938 |
| Yakima | 08:04:04 | -21.9 | Dark | Up | 24.6 | 235.9 | Low | 07:49:04 - 08:19:04 | 4903 |
| Toppenish/White Swan | 08:04:03 | -22.2 | Dark | Up | 24.7 | 236.1 | Low | 07:49:03 - 08:19:03 | 4882 |
| Pasco | 08:03:58 | -22.3 | Dark | Up | 24.0 | 237.3 | Low | 07:48:58 - 08:18:58 | 4854 |
| Goldendale | 08:04:03 | -22.7 | Dark | Up | 25.2 | 235.9 | Low | 07:49:03 - 08:19:03 | 4841 |
| PNWRO | 08:03:57 | -22.5 | Dark | Up | 24.0 | 237.6 | Low | 07:48:57 - 08:18:57 | 4830 |
| George/Umatilla | 08:03:58 | -22.6 | Dark | Up | 24.3 | 237.2 | Low | 07:48:58 - 08:18:58 | 4828 |
| The Dalles | 08:04:03 | -22.9 | Dark | Up | 25.5 | 235.7 | Low | 07:49:03 - 08:19:03 | 4826 |
| Maupin | 08:04:01 | -23.3 | Dark | Up | 25.7 | 235.9 | Low | 07:49:01 - 08:19:01 | 4789 |
| Madras/Culver | 08:04:00 | -23.9 | Dark | Up | 26.1 | 236.1 | Low | 07:49:00 - 08:19:00 | 4742 |
| Sisters | 08:04:00 | -24.2 | Dark | Up | 26.5 | 235.9 | Low | 07:49:00 - 08:19:00 | 4719 |
| Redmond | 08:03:59 | -24.2 | Dark | Up | 26.3 | 236.2 | Low | 07:48:59 - 08:18:59 | 4711 |
| Bend | 08:03:59 | -24.5 | Dark | Up | 26.5 | 236.2 | Low | 07:48:59 - 08:18:59 | 4695 |
| Oregon Observatory | 08:03:59 | -24.6 | Dark | Up | 26.7 | 236.1 | Low | 07:48:59 - 08:18:59 | 4681 |
| La Pine/Gilchrist | 08:03:59 | -24.8 | Dark | Up | 26.8 | 236.2 | Low | 07:48:59 - 08:18:59 | 4664 |
| North Lake | 08:03:56 | -25.3 | Dark | Up | 26.7 | 236.9 | Low | 07:48:56 - 08:18:56 | 4617 |
| Chiloquin | 08:03:57 | -25.9 | Dark | Up | 27.7 | 236.3 | Low | 07:48:57 - 08:18:57 | 4570 |
| Paisley | 08:03:54 | -25.8 | Dark | Up | 26.8 | 237.4 | Low | 07:48:54 - 08:18:54 | 4562 |
| Klamath Falls | 08:03:56 | -26.3 | Dark | Up | 27.8 | 236.5 | Low | 07:48:56 - 08:18:56 | 4538 |
| Lakeview | 08:03:51 | -26.3 | Dark | Up | 26.9 | 237.8 | Low | 07:48:51 - 08:18:51 | 4513 |
| Tulelake | 08:03:55 | -26.5 | Dark | Up | 27.8 | 236.9 | Low | 07:48:55 - 08:18:55 | 4509 |
| Cedarville | 08:03:50 | -27.0 | Dark | Up | 27.2 | 238.2 | Low | 07:48:50 - 08:18:50 | 4451 |
| Fall River/Burney | 08:03:52 | -27.5 | Dark | Up | 28.2 | 237.4 | Low | 07:48:52 - 08:18:52 | 4425 |
| Susanville | 08:03:50 | -28.1 | Dark | Up | 28.1 | 238.3 | Low | 07:48:50 - 08:18:50 | 4356 |
| Greenville | 08:03:50 | -28.4 | Dark | Up | 28.4 | 238.2 | Low | 07:48:50 - 08:18:50 | 4335 |
| Quincy | 08:03:49 | -28.6 | Dark | Up | 28.5 | 238.3 | Low | 07:48:49 - 08:18:49 | 4316 |
| Portola | 08:03:46 | -28.7 | Dark | Up | 28.3 | 238.7 | Low | 07:48:46 - 08:18:46 | 4297 |
| Reno | 08:03:45 | -29.0 | Dark | Up | 28.0 | 239.4 | Low | 07:48:45 - 08:18:45 | 4262 |
| Carson City | 08:03:43 | -29.3 | Dark | Up | 28.2 | 239.6 | Low | 07:48:43 - 08:18:43 | 4229 |
| Gardnerville | 08:03:43 | -29.6 | Dark | Up | 28.3 | 239.7 | Low | 07:48:43 - 08:18:43 | 4205 |
| Yerington | 08:03:40 | -29.5 | Dark | Up | 27.8 | 240.2 | Low | 07:48:40 - 08:18:40 | 4200 |
| Niwot | 08:03:39 | -27.0 | Dark | Up | 17.6 | 250.6 | Really Low | 07:48:39 - 08:18:39 | 4150 |
| Hawthorne | 08:03:39 | -30.0 | Dark | Up | 27.7 | 240.8 | Low | 07:48:39 - 08:18:39 | 4148 |
| Lee Vining | 08:03:39 | -30.6 | Dark | Up | 28.3 | 240.7 | Low | 07:48:39 - 08:18:39 | 4103 |
| Tonopah | 08:03:39 | -30.4 | Dark | Up | 27.0 | 242.2 | Low | 07:48:39 - 08:18:39 | 4084 |
| Bishop | 08:03:39 | -31.2 | Dark | Up | 28.1 | 241.6 | Low | 07:48:39 - 08:18:39 | 4035 |
| Beatty | 08:03:39 | -31.6 | Dark | Up | 27.2 | 243.1 | Low | 07:48:39 - 08:18:39 | 3968 |
| Lone Pine | 08:03:39 | -31.9 | Dark | Up | 28.2 | 242.2 | Low | 07:48:39 - 08:18:39 | 3957 |
| Indian Springs | 08:03:39 | -31.8 | Dark | Up | 26.5 | 244.1 | Low | 07:48:39 - 08:18:39 | 3923 |
| CPSLO | 08:03:39 | -33.2 | Dark | Up | 30.7 | 240.7 | Up | 07:48:39 - 08:18:39 | 3872 |
| Henderson | 08:03:39 | -32.3 | Dark | Up | 26.3 | 244.8 | Low | 07:48:39 - 08:18:39 | 3864 |
| Searchlight/Boulder City | 08:03:39 | -32.9 | Dark | Up | 26.5 | 245.2 | Low | 07:48:39 - 08:18:39 | 3809 |
| Patrick | 08:03:39 | -32.9 | Dark | Up | 25.7 | 246.0 | Low | 07:48:39 - 08:18:39 | 3792 |
| Laughlin/Bullhead City | 08:03:39 | -33.2 | Dark | Up | 26.3 | 245.5 | Low | 07:48:39 - 08:18:39 | 3776 |
| Kingman/Dolan Springs | 08:03:39 | -33.1 | Dark | Up | 25.9 | 245.9 | Low | 07:48:39 - 08:18:39 | 3773 |
| DCO | 08:03:39 | -33.1 | Dark | Up | 25.3 | 246.6 | Low | 07:48:39 - 08:18:39 | 3756 |
| Mohave Valley | 08:03:39 | -33.4 | Dark | Up | 26.4 | 245.7 | Low | 07:48:39 - 08:18:39 | 3750 |
| Wildwood | 08:03:39 | -34.4 | Dark | Up | 29.8 | 243.0 | Low | 07:48:39 - 08:18:39 | 3723 |
| Lake Havasu City | 08:03:39 | -33.8 | Dark | Up | 26.4 | 246.0 | Low | 07:48:39 - 08:18:39 | 3709 |
| Parker | 08:03:39 | -34.2 | Dark | Up | 26.5 | 246.2 | Low | 07:48:39 - 08:18:39 | 3675 |
| Idyllwild | 08:03:39 | -34.7 | Dark | Up | 28.5 | 244.6 | Low | 07:48:39 - 08:18:39 | 3664 |
| Blythe | 08:03:39 | -34.7 | Dark | Up | 27.0 | 246.2 | Low | 07:48:39 - 08:18:39 | 3628 |
| Calipatria | 08:03:39 | -35.3 | Dark | Up | 27.9 | 245.8 | Low | 07:48:39 - 08:18:39 | 3590 |
| Yuma | 08:03:39 | -35.6 | Dark | Up | 27.4 | 246.7 | Low | 07:48:39 - 08:18:39 | 3539 |
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 13HU156, (2017/07/15 08:09UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:55 0.9 23.80 114 1Del Oph 16:14:20.7 -03:41:42 2.7 1.66 122 2Eps Oph 16:18:19.4 -04:41:32 3.2 1.98 121 PPM 179793 16:22:39.0 -02:04:47 6.8 0.98 120 PPM 199533 16:19:36.9 -02:52:39 9.5 0.14 120 PPM 179783 16:19:36.4 -02:38:55 10.7 0.10 120 13HU156 16:19:46.1 -02:44:32 16.1 120 Positions are for J2000
Event circumstances last updated at 2016/09/02 18:14:37 UT
Marc W. Buie, Southwest Research Institute