Event between 12UN177 and star GA1220:00380480 with event index number of 314190
Geocentric closest approach at 2018/12/12 01:06:36 UTC
J2000 position of star is 02:16:56.9 +33:16:45
Equinox of date position of star is 02:18:04.1 +33:21:57
Stellar brightness G=16.1,
use SENSEUP=128
Star is 91 degrees from the moon.
Moon is 20% illuminated.
TNO apparent brightness V=23.3
[RECON map]
TNO is 36.4 AU from the Sun
and 35.6 AU from the Earth.
The TNO is moving 19.6
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 170 seconds.
The 1-sigma cross-track error in the shadow position is
2997 km.
The sky-plane scale is
25820.2 km/arcsec.
The TNO has an absolute magnitude Hv=7.6
Diameter=186.2 km assuming a 5% albedo -- 9.5 sec chord
Diameter=76.0 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is SCATEXTD
Star training set for 12UN177, (2018/12/12 01:07UT) Object RA Dec mag sep mel Aldebaran 04:37:00.6 +16:32:45 0.8 35.46 117 57Gam1And 02:05:04.2 +42:25:11 2.3 9.41 92 7 Tri 02:17:03.8 +33:26:46 5.3 0.23 91 PPM 067204 02:20:27.6 +33:41:24 8.4 0.59 92 7 Tri 02:17:03.8 +33:26:46 5.3 0.23 91 12UN177 02:18:04.6 +33:21:59 16.1 91 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 0.0 km
RECON observability=0.0 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) |
| Summerland | 01:07:43 | -10.6 | NT | Up | 45.9 | 90.0 | Up | 00:53:05 - 01:22:20 | 6194 |
| Kelowna | 01:07:42 | -10.8 | NT | Up | 46.1 | 90.3 | Up | 00:53:05 - 01:22:20 | 6177 |
| Penticton | 01:07:45 | -10.6 | NT | Up | 46.0 | 89.8 | Up | 00:53:07 - 01:22:22 | 6174 |
| Okanagan Falls | 01:07:46 | -10.5 | NT | Up | 46.0 | 89.6 | Up | 00:53:08 - 01:22:23 | 6170 |
| Oliver | 01:07:46 | -10.5 | NT | Up | 46.0 | 89.5 | Up | 00:53:09 - 01:22:24 | 6163 |
| Manson/Chelan | 01:07:55 | -9.6 | NT | Up | 45.6 | 87.7 | Up | 00:53:17 - 01:22:32 | 6151 |
| Oroville | 01:07:48 | -10.5 | NT | Up | 46.1 | 89.3 | Up | 00:53:11 - 01:22:26 | 6149 |
| Anarchist Mountain Observatory | 01:07:48 | -10.5 | NT | Up | 46.2 | 89.4 | Up | 00:53:10 - 01:22:25 | 6148 |
| Entiat | 01:07:56 | -9.5 | NT | Up | 45.6 | 87.5 | Up | 00:53:18 - 01:22:33 | 6147 |
| Wenatchee | 01:07:57 | -9.3 | NT | Up | 45.5 | 87.1 | Up | 00:53:19 - 01:22:34 | 6144 |
| Ellensburg | 01:07:59 | -9.0 | NT | Up | 45.3 | 86.6 | Up | 00:53:22 - 01:22:37 | 6141 |
| Tonasket | 01:07:49 | -10.4 | NT | Up | 46.1 | 89.1 | Up | 00:53:11 - 01:22:26 | 6141 |
| Brewster | 01:07:52 | -9.9 | NT | Up | 45.9 | 88.2 | Up | 00:53:15 - 01:22:30 | 6139 |
| Okanogan | 01:07:51 | -10.1 | NT | Up | 46.0 | 88.6 | Up | 00:53:13 - 01:22:28 | 6138 |
| Yakima | 01:08:01 | -8.8 | NT | Up | 45.3 | 86.2 | Up | 00:53:24 - 01:22:39 | 6128 |
| The Dalles | 01:08:07 | -8.1 | NT | Up | 44.8 | 84.8 | Up | 00:53:30 - 01:22:45 | 6126 |
| Goldendale | 01:08:06 | -8.4 | NT | Up | 45.1 | 85.2 | Up | 00:53:29 - 01:22:44 | 6115 |
| Toppenish/White Swan | 01:08:03 | -8.9 | NT | Up | 45.4 | 86.1 | Up | 00:53:25 - 01:22:40 | 6112 |
| Maupin | 01:08:09 | -8.0 | NT | Up | 44.8 | 84.4 | Up | 00:53:32 - 01:22:47 | 6106 |
| Sisters | 01:08:15 | -7.3 | NT | Up | 44.4 | 83.3 | Up | 00:53:37 - 01:22:52 | 6100 |
| Madras/Culver | 01:08:12 | -7.7 | NT | Up | 44.8 | 83.9 | Up | 00:53:34 - 01:22:49 | 6088 |
| Oregon Observatory | 01:08:17 | -7.2 | NT | Up | 44.5 | 82.9 | Up | 00:53:39 - 01:22:54 | 6078 |
| Redmond | 01:08:14 | -7.5 | NT | Up | 44.7 | 83.5 | Up | 00:53:37 - 01:22:52 | 6077 |
| Bend | 01:08:15 | -7.3 | NT | Up | 44.6 | 83.2 | Up | 00:53:38 - 01:22:53 | 6077 |
| La Pine/Gilchrist | 01:08:18 | -7.1 | NT | Up | 44.4 | 82.7 | Up | 00:53:40 - 01:22:55 | 6074 |
| Chiloquin | 01:08:24 | -6.4 | NT | Up | 44.0 | 81.4 | Up | 00:53:46 - 01:23:01 | 6051 |
| Pasco | 01:08:02 | -9.6 | NT | Up | 46.3 | 86.8 | Up | 00:53:25 - 01:22:40 | 6040 |
| George/Umatilla | 01:08:04 | -9.4 | NT | Up | 46.1 | 86.3 | Up | 00:53:26 - 01:22:41 | 6039 |
| Klamath Falls | 01:08:25 | -6.3 | NT | Up | 44.0 | 81.2 | Up | 00:53:48 - 01:23:03 | 6033 |
| North Lake | 01:08:19 | -7.3 | NT | Up | 44.8 | 82.6 | Up | 00:53:42 - 01:22:57 | 6024 |
| PNWRO | 01:08:03 | -9.7 | NT | Up | 46.4 | 86.7 | Up | 00:53:26 - 01:22:41 | 6018 |
| Tulelake | 01:08:27 | -6.4 | NT | Up | 44.2 | 81.1 | Up | 00:53:49 - 01:23:04 | 6005 |
| Paisley | 01:08:22 | -7.3 | NT | Up | 45.0 | 82.3 | Up | 00:53:45 - 01:23:00 | 5982 |
| Fall River/Burney | 01:08:32 | -6.0 | NT | Up | 44.1 | 80.3 | Up | 00:53:54 - 01:23:09 | 5964 |
| Lakeview | 01:08:25 | -7.2 | NT | Up | 45.1 | 81.9 | Up | 00:53:47 - 01:23:02 | 5951 |
| Cedarville | 01:08:28 | -7.1 | NT | Up | 45.1 | 81.4 | Up | 00:53:51 - 01:23:06 | 5913 |
| Greenville | 01:08:36 | -6.0 | CT | Up | 44.3 | 79.6 | Up | 00:53:59 - 01:23:14 | 5900 |
| Gimple | 01:08:36 | -6.0 | NT | Up | 44.4 | 79.7 | Up | 00:53:58 - 01:23:13 | 5895 |
| Susanville | 01:08:34 | -6.3 | NT | Up | 44.6 | 80.1 | Up | 00:53:57 - 01:23:12 | 5895 |
| Quincy | 01:08:37 | -5.9 | CT | Up | 44.3 | 79.4 | Up | 00:53:59 - 01:23:14 | 5891 |
| Portola | 01:08:37 | -6.2 | NT | Up | 44.6 | 79.6 | Up | 00:54:00 - 01:23:15 | 5858 |
| Reno | 01:08:38 | -6.5 | NT | Up | 45.1 | 79.6 | Up | 00:54:01 - 01:23:16 | 5808 |
| Carson City | 01:08:40 | -6.4 | NT | Up | 45.0 | 79.3 | Up | 00:54:03 - 01:23:18 | 5790 |
| Gardnerville | 01:08:41 | -6.3 | NT | Up | 45.0 | 79.1 | Up | 00:54:03 - 01:23:18 | 5777 |
| Yerington | 01:08:41 | -6.8 | NT | Up | 45.5 | 79.4 | Up | 00:54:04 - 01:23:19 | 5744 |
| Lee Vining | 01:08:45 | -6.4 | NT | Up | 45.3 | 78.4 | Up | 00:54:08 - 01:23:23 | 5694 |
| Hawthorne | 01:08:43 | -7.0 | NT | Up | 45.8 | 79.2 | Up | 00:54:05 - 01:23:20 | 5690 |
| CPSLO | 01:09:01 | -4.2 | CT | Up | 43.6 | 75.3 | Up | 00:54:23 - 01:23:38 | 5662 |
| Bishop | 01:08:48 | -6.7 | NT | Up | 45.8 | 78.2 | Up | 00:54:11 - 01:23:26 | 5621 |
| Tonopah | 01:08:43 | -7.8 | NT | Up | 46.8 | 79.4 | Up | 00:54:05 - 01:23:20 | 5582 |
| Lone Pine | 01:08:52 | -6.6 | NT | Up | 45.9 | 77.5 | Up | 00:54:14 - 01:23:29 | 5563 |
| Beatty | 01:08:49 | -7.7 | NT | Up | 47.0 | 78.4 | Up | 00:54:11 - 01:23:26 | 5497 |
| Wildwood | 01:09:05 | -5.2 | CT | Up | 44.9 | 74.9 | Up | 00:54:27 - 01:23:42 | 5471 |
| Indian Springs | 01:08:49 | -8.4 | NT | Up | 47.7 | 78.5 | Up | 00:54:11 - 01:23:26 | 5413 |
| Henderson | 01:08:51 | -8.7 | NT | Up | 48.2 | 78.2 | Up | 00:54:13 - 01:23:28 | 5341 |
| Idyllwild | 01:09:04 | -6.5 | NT | Up | 46.3 | 75.2 | Up | 00:54:26 - 01:23:41 | 5331 |
| Searchlight/Boulder City | 01:08:54 | -8.5 | NT | Up | 48.1 | 77.6 | Up | 00:54:16 - 01:23:31 | 5307 |
| Laughlin/Bullhead City | 01:08:55 | -8.7 | NT | Up | 48.3 | 77.4 | Up | 00:54:17 - 01:23:32 | 5269 |
| Mohave Valley | 01:08:56 | -8.6 | NT | Up | 48.3 | 77.1 | Up | 00:54:19 - 01:23:34 | 5254 |
| Kingman/Dolan Springs | 01:08:54 | -9.1 | NT | Up | 48.8 | 77.6 | Up | 00:54:16 - 01:23:31 | 5237 |
| Patrick | 01:08:53 | -9.3 | NT | Up | 49.0 | 78.0 | Up | 00:54:15 - 01:23:30 | 5237 |
| Calipatria | 01:09:05 | -7.2 | NT | Up | 47.1 | 74.9 | Up | 00:54:28 - 01:23:43 | 5220 |
| Lake Havasu City | 01:08:57 | -8.6 | NT | Up | 48.4 | 76.8 | Up | 00:54:20 - 01:23:35 | 5217 |
| Parker | 01:08:59 | -8.5 | NT | Up | 48.4 | 76.4 | Up | 00:54:22 - 01:23:37 | 5195 |
| Blythe | 01:09:03 | -8.1 | NT | Up | 48.0 | 75.7 | Up | 00:54:25 - 01:23:40 | 5186 |
| DCO | 01:08:53 | -9.7 | NT | Up | 49.5 | 77.9 | Up | 00:54:16 - 01:23:31 | 5174 |
| Yuma | 01:09:07 | -7.7 | NT | Up | 47.7 | 74.7 | Up | 00:54:29 - 01:23:44 | 5137 |
| Niwot | 01:08:16 | -17.2 | AT | Up | 56.2 | 88.2 | Up | 00:53:38 - 01:22:53 | 4948 |
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 12UN177, (2018/12/12 01:07UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 35.46 117 57Gam1And 02:03:54.0 +42:19:46 2.3 9.41 92 7 Tri 02:15:56.1 +33:21:32 5.3 0.23 91 PPM 067204 02:19:19.7 +33:36:13 8.4 0.59 92 7 Tri 02:15:56.1 +33:21:32 5.3 0.23 91 12UN177 02:16:56.9 +33:16:45 16.1 91 Positions are for J2000
Event circumstances last updated at 2018/10/23 20:45:22 UT
Marc W. Buie, Southwest Research Institute