Event between (418993) 09MS9 and star UC4-506-003992 with event index number of 91890
Geocentric closest approach at 2017/11/15 06:54:57 UTC
J2000 position of star is 02:39:38.5 +11:04:14
Equinox of date position of star is 02:40:33.3 +11:08:33
Stellar brightness R=13.6
Star is 156 degrees from the moon.
Moon is 10% illuminated.
TNO apparent brightness V=21.3
[RECON map]
TNO is 14.0 AU from the Sun
and 13.0 AU from the Earth.
The TNO is moving 27.1
km/sec on the sky relative to the star, or,
10.3 arcsec/hr.
The 1-sigma error in the time of the event is 21 seconds.
The 1-sigma cross-track error in the shadow position is
600 km.
The sky-plane scale is
9452.1 km/arcsec.
The TNO has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 2.3 sec chord
Diameter=25.8 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
Star training set for 418993, (2017/11/15 06:55UT) Object RA Dec mag sep mel Aldebaran 04:36:56.9 +16:32:38 0.8 28.72 127 Menkar 03:03:13.0 +04:09:32 2.5 8.95 151 PPM 118474 02:43:26.8 +10:49:01 6.3 0.77 155 PPM 118408 02:40:01.3 +10:42:47 7.7 0.46 156 PPM 118413 02:40:10.5 +11:24:52 9.8 0.29 156 PPM 118409 02:40:03.2 +11:05:10 10.7 0.15 156 418993 02:40:36.4 +11:08:48 13.6 156 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
5.0 sigma about the mid-time.
The median site spacing is 19.3 km
RECON observability=1.0 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 | 06:53:37 | -58.1 | Dark | Down | 52.1 | 177.8 | Up | 06:51:22 - 06:55:51 | 3762 |
| Tonasket | 06:53:37 | -58.3 | Dark | Down | 52.4 | 177.8 | Up | 06:51:23 - 06:55:52 | 3745 |
| Okanogan | 06:53:38 | -58.5 | Dark | Down | 52.7 | 177.5 | Up | 06:51:23 - 06:55:52 | 3728 |
| Manson/Chelan | 06:53:40 | -58.8 | Dark | Down | 53.1 | 176.6 | Up | 06:51:26 - 06:55:55 | 3720 |
| Brewster | 06:53:39 | -58.7 | Dark | Down | 52.9 | 177.2 | Up | 06:51:24 - 06:55:53 | 3718 |
| Entiat | 06:53:41 | -59.0 | Dark | Down | 53.4 | 176.4 | Up | 06:51:26 - 06:55:55 | 3708 |
| Wenatchee | 06:53:41 | -59.2 | Dark | Down | 53.6 | 176.3 | Up | 06:51:27 - 06:55:56 | 3694 |
| Ellensburg | 06:53:43 | -59.5 | Dark | Down | 54.0 | 175.9 | Up | 06:51:28 - 06:55:57 | 3675 |
| Yakima | 06:53:44 | -59.9 | Dark | Down | 54.4 | 175.8 | Up | 06:51:29 - 06:55:58 | 3647 |
| Toppenish/White Swan | 06:53:44 | -60.1 | Dark | Down | 54.6 | 176.1 | Up | 06:51:30 - 06:55:59 | 3623 |
| The Dalles | 06:53:48 | -60.6 | Dark | Down | 55.4 | 174.7 | Up | 06:51:33 - 06:56:02 | 3604 |
| Goldendale | 06:53:46 | -60.5 | Dark | Down | 55.2 | 175.3 | Up | 06:51:31 - 06:56:00 | 3604 |
| Maupin | 06:53:48 | -61.0 | Dark | Down | 55.8 | 174.8 | Up | 06:51:33 - 06:56:02 | 3569 |
| Pasco | 06:53:41 | -60.6 | Dark | Down | 54.8 | 178.2 | Up | 06:51:26 - 06:55:55 | 3556 |
| George/Umatilla | 06:53:42 | -60.9 | Dark | Down | 55.1 | 177.8 | Up | 06:51:27 - 06:55:56 | 3542 |
| Madras/Culver | 06:53:49 | -61.5 | Dark | Down | 56.3 | 174.6 | Up | 06:51:34 - 06:56:03 | 3532 |
| Sisters | 06:53:51 | -61.6 | Dark | Down | 56.6 | 173.8 | Up | 06:51:37 - 06:56:06 | 3529 |
| PNWRO | 06:53:41 | -60.9 | Dark | Down | 55.1 | 178.6 | Up | 06:51:26 - 06:55:55 | 3528 |
| Redmond | 06:53:50 | -61.8 | Dark | Down | 56.7 | 174.5 | Up | 06:51:36 - 06:56:05 | 3508 |
| Bend | 06:53:51 | -61.9 | Dark | Down | 56.9 | 174.2 | Up | 06:51:37 - 06:56:06 | 3500 |
| Oregon Observatory | 06:53:52 | -62.0 | Dark | Down | 57.1 | 174.0 | Up | 06:51:37 - 06:56:06 | 3493 |
| La Pine/Gilchrist | 06:53:52 | -62.2 | Dark | Down | 57.3 | 173.8 | Up | 06:51:38 - 06:56:07 | 3481 |
| North Lake | 06:53:52 | -62.8 | Dark | Down | 57.7 | 174.9 | Up | 06:51:37 - 06:56:06 | 3420 |
| Chiloquin | 06:53:55 | -63.0 | Dark | Down | 58.3 | 173.0 | Up | 06:51:41 - 06:56:10 | 3417 |
| Klamath Falls | 06:53:56 | -63.3 | Dark | Down | 58.7 | 173.1 | Up | 06:51:41 - 06:56:10 | 3387 |
| Paisley | 06:53:52 | -63.4 | Dark | Down | 58.3 | 175.5 | Up | 06:51:37 - 06:56:06 | 3362 |
| Tulelake | 06:53:55 | -63.7 | Dark | Down | 59.0 | 173.6 | Up | 06:51:41 - 06:56:10 | 3352 |
| Lakeview | 06:53:52 | -63.9 | Dark | Down | 58.8 | 175.8 | Up | 06:51:38 - 06:56:07 | 3314 |
| Fall River/Burney | 06:53:57 | -64.5 | Dark | Down | 59.9 | 173.6 | Up | 06:51:42 - 06:56:11 | 3280 |
| Cedarville | 06:53:54 | -64.5 | Dark | Down | 59.5 | 176.0 | Up | 06:51:39 - 06:56:08 | 3256 |
| Susanville | 06:53:56 | -65.3 | Dark | Down | 60.6 | 175.0 | Up | 06:51:42 - 06:56:11 | 3195 |
| Greenville | 06:53:58 | -65.4 | Dark | Down | 60.8 | 174.3 | Up | 06:51:44 - 06:56:13 | 3189 |
| Gimple | 06:53:58 | -65.5 | Dark | Down | 60.8 | 174.5 | Up | 06:51:43 - 06:56:12 | 3184 |
| Quincy | 06:53:58 | -65.6 | Dark | Down | 61.0 | 174.3 | Up | 06:51:44 - 06:56:13 | 3173 |
| Portola | 06:53:57 | -65.9 | Dark | Down | 61.2 | 175.2 | Up | 06:51:43 - 06:56:12 | 3139 |
| Reno | 06:53:56 | -66.4 | Dark | Down | 61.5 | 176.5 | Up | 06:51:42 - 06:56:11 | 3085 |
| Carson City | 06:53:57 | -66.7 | Dark | Down | 61.8 | 176.5 | Up | 06:51:43 - 06:56:12 | 3056 |
| Gardnerville | 06:53:58 | -66.9 | Dark | Down | 62.1 | 176.6 | Up | 06:51:43 - 06:56:12 | 3035 |
| Yerington | 06:53:56 | -67.1 | Dark | Down | 62.1 | 177.8 | Up | 06:51:42 - 06:56:11 | 3008 |
| Hawthorne | 06:53:56 | -67.7 | Dark | Down | 62.5 | 178.9 | Up | 06:51:41 - 06:56:10 | 2944 |
| Lee Vining | 06:53:58 | -68.0 | Dark | Down | 63.1 | 177.9 | Up | 06:51:44 - 06:56:13 | 2925 |
| Bishop | 06:53:57 | -68.8 | Dark | Down | 63.7 | 179.4 | Up | 06:51:43 - 06:56:12 | 2839 |
| Tonopah | 06:53:54 | -68.7 | Dark | Down | 63.0 | 182.0 | Up | 06:51:39 - 06:56:08 | 2835 |
| CPSLO | 06:54:08 | -69.5 | Dark | Down | 65.7 | 174.1 | Up | 06:51:54 - 06:56:23 | 2794 |
| Lone Pine | 06:53:58 | -69.6 | Dark | Down | 64.5 | 180.2 | Up | 06:51:44 - 06:56:13 | 2760 |
| Beatty | 06:53:55 | -69.9 | Dark | Down | 64.1 | 183.1 | Up | 06:51:41 - 06:56:10 | 2716 |
| Indian Springs | 06:53:52 | -70.5 | Dark | Down | 64.4 | 185.5 | Up | 06:51:38 - 06:56:07 | 2633 |
| Wildwood | 06:54:05 | -71.5 | Dark | Down | 67.0 | 178.9 | Up | 06:51:51 - 06:56:20 | 2584 |
| Henderson | 06:53:52 | -71.2 | Dark | Down | 64.9 | 187.3 | Up | 06:51:37 - 06:56:06 | 2553 |
| Searchlight/Boulder City | 06:53:52 | -71.8 | Dark | Down | 65.4 | 187.6 | Up | 06:51:38 - 06:56:07 | 2501 |
| Laughlin/Bullhead City | 06:53:52 | -72.2 | Dark | Down | 65.7 | 188.5 | Up | 06:51:38 - 06:56:07 | 2458 |
| Idyllwild | 06:54:01 | -72.7 | Dark | Down | 67.3 | 183.7 | Up | 06:51:46 - 06:56:15 | 2452 |
| Patrick | 06:53:50 | -72.2 | Dark | Down | 65.4 | 190.0 | Up | 06:51:36 - 06:56:05 | 2442 |
| Mohave Valley | 06:53:53 | -72.4 | Dark | Down | 66.0 | 188.6 | Up | 06:51:39 - 06:56:08 | 2435 |
| Kingman/Dolan Springs | 06:53:51 | -72.3 | Dark | Down | 65.6 | 189.7 | Up | 06:51:37 - 06:56:06 | 2433 |
| Niwot | 06:53:18 | -68.4 | Dark | Down | 58.8 | 204.9 | Up | 06:51:04 - 06:55:33 | 2419 |
| Lake Havasu City | 06:53:53 | -72.9 | Dark | Down | 66.3 | 189.3 | Up | 06:51:39 - 06:56:08 | 2387 |
| DCO | 06:53:49 | -72.6 | Dark | Down | 65.5 | 191.8 | Up | 06:51:34 - 06:56:03 | 2379 |
| Parker | 06:53:54 | -73.2 | Dark | Down | 66.7 | 189.5 | Up | 06:51:40 - 06:56:09 | 2356 |
| Calipatria | 06:53:59 | -73.7 | Dark | Down | 67.8 | 186.8 | Up | 06:51:44 - 06:56:13 | 2336 |
| Blythe | 06:53:55 | -73.6 | Dark | Down | 67.2 | 189.0 | Up | 06:51:41 - 06:56:10 | 2327 |
| Yuma | 06:53:57 | -74.4 | Dark | Down | 68.1 | 189.3 | Up | 06:51:43 - 06:56:12 | 2250 |
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 418993, (2017/11/15 06:55UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 28.72 127 Menkar 03:02:16.8 +04:05:22 2.5 8.95 151 PPM 118474 02:42:28.9 +10:44:29 6.3 0.77 155 PPM 118408 02:39:03.5 +10:38:12 7.7 0.46 156 PPM 118413 02:39:12.4 +11:20:17 9.8 0.29 156 PPM 118409 02:39:05.2 +11:00:35 10.7 0.15 156 418993 02:39:38.5 +11:04:14 13.6 156 Positions are for J2000
Event circumstances last updated at 2016/12/02 19:04:28 UT
Marc W. Buie, Southwest Research Institute