Event between (385571) Otrera and star UC4-514-003225 with event index number of 91773
Geocentric closest approach at 2017/11/12 04:27:45 UTC
J2000 position of star is 02:05:03.6 +12:39:40
Equinox of date position of star is 02:05:59.5 +12:44:36
Stellar brightness R=15.8,
use SENSEUP=128
Star is 123 degrees from the moon.
Moon is 36% illuminated.
TNO apparent brightness V=23.5
[RECON map]
TNO is 29.3 AU from the Sun
and 28.4 AU from the Earth.
The TNO is moving 23.2
km/sec on the sky relative to the star, or,
4.1 arcsec/hr.
The 1-sigma error in the time of the event is 332 seconds.
The 1-sigma cross-track error in the shadow position is
4359 km.
The sky-plane scale is
20581.1 km/arcsec.
The TNO has an absolute magnitude Hv=8.8
Diameter=104.7 km assuming a 5% albedo -- 4.5 sec chord
Diameter=42.8 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is 1:1
Star training set for 385571, (2017/11/12 04:28UT) Object RA Dec mag sep mel Aldebaran 04:36:56.9 +16:32:38 0.8 36.65 87 6Bet Ari 01:55:37.8 +20:53:41 2.6 8.52 122 PPM 117850 02:00:23.4 +12:22:51 6.1 1.42 124 PPM 117890 02:03:22.8 +12:46:14 7.9 0.64 124 PPM 117944 02:07:12.0 +12:31:14 10.0 0.37 123 PPM 117924 02:05:29.6 +12:49:31 10.4 0.15 123 385571 02:06:01.3 +12:44:46 15.8 123 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 17.2 km
RECON observability=1.0 and success probability=5.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 04:28:21 | -40.2 | Dark | Down | 45.1 | 132.7 | Up | 04:13:21 - 04:43:21 | 6116 |
| Tonasket | 04:28:22 | -40.3 | Dark | Down | 45.2 | 132.6 | Up | 04:13:22 - 04:43:22 | 6100 |
| Okanogan | 04:28:23 | -40.3 | Dark | Down | 45.4 | 132.1 | Up | 04:13:23 - 04:43:23 | 6081 |
| Brewster | 04:28:24 | -40.3 | Dark | Down | 45.5 | 131.7 | Up | 04:13:24 - 04:43:24 | 6069 |
| Manson/Chelan | 04:28:26 | -40.1 | Dark | Down | 45.4 | 131.1 | Up | 04:13:26 - 04:43:26 | 6065 |
| Entiat | 04:28:27 | -40.1 | Dark | Down | 45.5 | 130.9 | Up | 04:13:27 - 04:43:27 | 6052 |
| Wenatchee | 04:28:28 | -40.2 | Dark | Down | 45.7 | 130.5 | Up | 04:13:28 - 04:43:28 | 6037 |
| Ellensburg | 04:28:29 | -40.2 | Dark | Down | 45.8 | 130.0 | Up | 04:13:29 - 04:43:29 | 6015 |
| Yakima | 04:28:30 | -40.3 | Dark | Down | 46.1 | 129.6 | Up | 04:13:30 - 04:43:30 | 5987 |
| Toppenish/White Swan | 04:28:30 | -40.5 | Dark | Down | 46.3 | 129.7 | Up | 04:13:30 - 04:43:30 | 5967 |
| Goldendale | 04:28:33 | -40.4 | Dark | Down | 46.4 | 128.7 | Up | 04:13:33 - 04:43:33 | 5941 |
| The Dalles | 04:28:35 | -40.2 | Dark | Down | 46.4 | 128.1 | Up | 04:13:35 - 04:43:35 | 5936 |
| Pasco | 04:28:28 | -41.3 | Dark | Down | 47.0 | 131.1 | Up | 04:13:28 - 04:43:28 | 5920 |
| Maupin | 04:28:36 | -40.4 | Dark | Down | 46.7 | 127.9 | Up | 04:13:36 - 04:43:36 | 5903 |
| George/Umatilla | 04:28:30 | -41.3 | Dark | Down | 47.2 | 130.5 | Up | 04:13:30 - 04:43:30 | 5903 |
| PNWRO | 04:28:28 | -41.6 | Dark | Down | 47.3 | 131.1 | Up | 04:13:28 - 04:43:28 | 5896 |
| Madras/Culver | 04:28:38 | -40.5 | Dark | Down | 47.0 | 127.4 | Up | 04:13:38 - 04:43:38 | 5865 |
| Sisters | 04:28:40 | -40.3 | Dark | Down | 47.0 | 126.6 | Up | 04:13:40 - 04:43:40 | 5855 |
| Redmond | 04:28:40 | -40.6 | Dark | Down | 47.2 | 127.0 | Up | 04:13:40 - 04:43:40 | 5841 |
| Bend | 04:28:40 | -40.6 | Dark | Down | 47.2 | 126.7 | Up | 04:13:40 - 04:43:40 | 5830 |
| Oregon Observatory | 04:28:41 | -40.5 | Dark | Down | 47.3 | 126.4 | Up | 04:13:41 - 04:43:41 | 5822 |
| La Pine/Gilchrist | 04:28:42 | -40.5 | Dark | Down | 47.4 | 126.1 | Up | 04:13:42 - 04:43:42 | 5808 |
| North Lake | 04:28:41 | -41.1 | Dark | Down | 48.0 | 126.5 | Up | 04:13:41 - 04:43:41 | 5757 |
| Chiloquin | 04:28:46 | -40.6 | Dark | Down | 47.8 | 124.8 | Up | 04:13:46 - 04:43:46 | 5738 |
| Klamath Falls | 04:28:47 | -40.7 | Dark | Down | 48.1 | 124.5 | Up | 04:13:47 - 04:43:47 | 5709 |
| Paisley | 04:28:42 | -41.5 | Dark | Down | 48.5 | 126.4 | Up | 04:13:42 - 04:43:42 | 5705 |
| Tulelake | 04:28:47 | -41.0 | Dark | Down | 48.4 | 124.6 | Up | 04:13:47 - 04:43:47 | 5679 |
| Lakeview | 04:28:43 | -41.7 | Dark | Down | 48.9 | 126.1 | Up | 04:13:43 - 04:43:43 | 5661 |
| Fall River/Burney | 04:28:50 | -41.3 | Dark | Down | 49.0 | 123.9 | Up | 04:13:50 - 04:43:50 | 5608 |
| Cedarville | 04:28:45 | -42.0 | Dark | Down | 49.4 | 125.7 | Up | 04:13:45 - 04:43:45 | 5605 |
| Susanville | 04:28:49 | -42.0 | Dark | Down | 49.8 | 124.1 | Up | 04:13:49 - 04:43:49 | 5535 |
| Greenville | 04:28:51 | -41.8 | Dark | Down | 49.8 | 123.5 | Up | 04:13:51 - 04:43:51 | 5523 |
| Gimple | 04:28:51 | -41.9 | Dark | Down | 49.8 | 123.6 | Up | 04:13:51 - 04:43:51 | 5520 |
| Quincy | 04:28:51 | -41.9 | Dark | Down | 49.9 | 123.3 | Up | 04:13:51 - 04:43:51 | 5507 |
| Portola | 04:28:51 | -42.2 | Dark | Down | 50.2 | 123.8 | Up | 04:13:51 - 04:43:51 | 5482 |
| Reno | 04:28:50 | -42.8 | Dark | Down | 50.8 | 124.2 | Up | 04:13:50 - 04:43:50 | 5439 |
| Carson City | 04:28:51 | -42.9 | Dark | Down | 51.0 | 123.9 | Up | 04:13:51 - 04:43:51 | 5410 |
| Gardnerville | 04:28:51 | -43.0 | Dark | Down | 51.2 | 123.7 | Up | 04:13:51 - 04:43:51 | 5389 |
| Yerington | 04:28:49 | -43.4 | Dark | Down | 51.5 | 124.4 | Up | 04:13:49 - 04:43:49 | 5373 |
| Hawthorne | 04:28:49 | -43.9 | Dark | Down | 52.1 | 124.6 | Up | 04:13:49 - 04:43:49 | 5318 |
| Lee Vining | 04:28:52 | -43.7 | Dark | Down | 52.1 | 123.4 | Up | 04:13:52 - 04:43:52 | 5289 |
| Tonopah | 04:28:46 | -45.1 | Dark | Down | 53.3 | 125.8 | Up | 04:13:46 - 04:43:46 | 5232 |
| Bishop | 04:28:52 | -44.4 | Dark | Down | 53.0 | 123.6 | Up | 04:13:52 - 04:43:52 | 5215 |
| Lone Pine | 04:28:53 | -44.8 | Dark | Down | 53.6 | 123.2 | Up | 04:13:53 - 04:43:53 | 5141 |
| CPSLO | 04:28:53 | -42.9 | Dark | Down | 52.5 | 118.7 | Up | 04:13:53 - 04:43:53 | 5130 |
| Beatty | 04:28:48 | -45.7 | Dark | Down | 54.3 | 125.1 | Up | 04:13:48 - 04:43:48 | 5120 |
| Indian Springs | 04:28:46 | -46.6 | Dark | Down | 55.2 | 126.0 | Up | 04:13:46 - 04:43:46 | 5055 |
| Niwot | 04:28:04 | -53.0 | Dark | Down | 58.4 | 145.1 | Up | 04:13:04 - 04:43:04 | 5004 |
| Henderson | 04:28:45 | -47.3 | Dark | Down | 55.9 | 126.3 | Up | 04:13:45 - 04:43:45 | 4986 |
| Wildwood | 04:28:53 | -44.8 | Dark | Down | 54.5 | 119.6 | Up | 04:13:53 - 04:43:53 | 4952 |
| Searchlight/Boulder City | 04:28:46 | -47.5 | Dark | Down | 56.3 | 125.7 | Up | 04:13:46 - 04:43:46 | 4935 |
| Laughlin/Bullhead City | 04:28:46 | -47.8 | Dark | Down | 56.7 | 125.8 | Up | 04:13:46 - 04:43:46 | 4897 |
| Patrick | 04:28:43 | -48.3 | Dark | Down | 57.0 | 127.0 | Up | 04:13:43 - 04:43:43 | 4893 |
| Kingman/Dolan Springs | 04:28:44 | -48.2 | Dark | Down | 57.0 | 126.5 | Up | 04:13:44 - 04:43:44 | 4881 |
| Mohave Valley | 04:28:47 | -47.9 | Dark | Down | 56.9 | 125.5 | Up | 04:13:47 - 04:43:47 | 4873 |
| Idyllwild | 04:28:53 | -46.4 | Dark | Down | 56.1 | 121.3 | Up | 04:13:53 - 04:43:53 | 4851 |
| DCO | 04:28:42 | -49.0 | Dark | Down | 57.7 | 127.6 | Up | 04:13:42 - 04:43:42 | 4842 |
| Lake Havasu City | 04:28:47 | -48.2 | Dark | Down | 57.3 | 125.3 | Up | 04:13:47 - 04:43:47 | 4830 |
| Parker | 04:28:48 | -48.3 | Dark | Down | 57.5 | 124.9 | Up | 04:13:48 - 04:43:48 | 4798 |
| Blythe | 04:28:50 | -48.1 | Dark | Down | 57.6 | 123.8 | Up | 04:13:50 - 04:43:50 | 4763 |
| Calipatria | 04:28:53 | -47.5 | Dark | Down | 57.2 | 122.0 | Up | 04:13:53 - 04:43:53 | 4754 |
| Yuma | 04:28:53 | -48.3 | Dark | Down | 58.1 | 122.5 | Up | 04:13:53 - 04:43:53 | 4683 |
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 385571, (2017/11/12 04:28UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 36.65 87 6Bet Ari 01:54:38.5 +20:48:27 2.6 8.52 122 PPM 117850 01:59:25.9 +12:17:41 6.1 1.42 124 PPM 117890 02:02:25.1 +12:41:06 7.9 0.64 124 PPM 117944 02:06:14.3 +12:26:09 10.0 0.37 123 PPM 117924 02:04:31.8 +12:44:25 10.4 0.15 123 385571 02:05:03.6 +12:39:40 15.8 123 Positions are for J2000
Event circumstances last updated at 2017/04/24 16:13:43 UT
Marc W. Buie, Southwest Research Institute