Event between (341275) 07RG283 and star GDR2_73.458_48.165 with event index number of 171418
Geocentric closest approach at 2018/12/14 10:47:06 UTC
J2000 position of star is 04:53:49.8 +48:09:55
Equinox of date position of star is 04:55:12.7 +48:11:39
Stellar brightness G=16.4,
use SENSEUP=128
Star is 98 degrees from the moon.
Moon is 40% illuminated.
TNO apparent brightness V=20.6
[RECON map]
TNO is 15.6 AU from the Sun
and 14.7 AU from the Earth.
The TNO is moving 22.5
km/sec on the sky relative to the star, or,
7.6 arcsec/hr.
The 1-sigma error in the time of the event is 304 seconds.
The 1-sigma cross-track error in the shadow position is
2914 km.
The sky-plane scale is
10657.2 km/arcsec.
The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 5.1 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
Star training set for 341275, (2018/12/14 10:47UT) Object RA Dec mag sep mel Aldebaran 04:37:00.6 +16:32:45 0.8 31.87 89 34Bet Aur 06:00:55.2 +44:56:50 1.9 11.72 109 PPM 047420 04:52:35.1 +48:46:17 5.7 0.73 97 PPM 047530 04:58:29.9 +47:54:25 7.8 0.61 98 PPM 047460 04:55:15.7 +47:59:09 8.9 0.21 98 PPM 047473 04:55:55.4 +48:06:20 10.2 0.14 98 341275 04:55:15.2 +48:11:42 16.4 98 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
3.0 sigma about the mid-time.
The median site spacing is 21.8 km
RECON observability=1.0 and success probability=9.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 10:44:31 | -47.6 | Dark | Down | 56.7 | 288.6 | Up | 10:29:31 - 10:59:31 | 4400 |
| Tonasket | 10:44:31 | -47.7 | Dark | Down | 56.6 | 288.9 | Up | 10:29:31 - 10:59:31 | 4376 |
| Okanogan | 10:44:30 | -47.9 | Dark | Down | 56.6 | 289.3 | Up | 10:29:30 - 10:59:30 | 4337 |
| Brewster | 10:44:30 | -48.1 | Dark | Down | 56.6 | 289.6 | Up | 10:29:30 - 10:59:30 | 4304 |
| Manson/Chelan | 10:44:31 | -48.4 | Dark | Down | 56.8 | 289.8 | Up | 10:29:31 - 10:59:31 | 4272 |
| Entiat | 10:44:31 | -48.5 | Dark | Down | 56.8 | 290.1 | Up | 10:29:31 - 10:59:31 | 4247 |
| Wenatchee | 10:44:31 | -48.7 | Dark | Down | 56.7 | 290.4 | Up | 10:29:31 - 10:59:31 | 4218 |
| Ellensburg | 10:44:31 | -49.0 | Dark | Down | 56.7 | 290.9 | Up | 10:29:31 - 10:59:31 | 4169 |
| Pasco | 10:44:26 | -48.3 | Dark | Down | 55.6 | 292.4 | Up | 10:29:26 - 10:59:26 | 4134 |
| Yakima | 10:44:30 | -49.1 | Dark | Down | 56.6 | 291.5 | Up | 10:29:30 - 10:59:30 | 4127 |
| PNWRO | 10:44:24 | -48.3 | Dark | Down | 55.3 | 292.8 | Up | 10:29:24 - 10:59:24 | 4115 |
| Toppenish/White Swan | 10:44:29 | -49.1 | Dark | Down | 56.4 | 291.8 | Up | 10:29:29 - 10:59:29 | 4109 |
| George/Umatilla | 10:44:26 | -48.6 | Dark | Down | 55.6 | 292.8 | Up | 10:29:26 - 10:59:26 | 4093 |
| Niwot | 10:43:40 | -39.5 | Dark | Down | 43.8 | 302.8 | Up | 10:28:40 - 10:58:40 | 4053 |
| Goldendale | 10:44:30 | -49.6 | Dark | Down | 56.5 | 292.5 | Up | 10:29:30 - 10:59:30 | 4040 |
| The Dalles | 10:44:30 | -49.9 | Dark | Down | 56.6 | 292.7 | Up | 10:29:30 - 10:59:30 | 4006 |
| Maupin | 10:44:29 | -50.0 | Dark | Down | 56.4 | 293.3 | Up | 10:29:29 - 10:59:29 | 3966 |
| Madras/Culver | 10:44:29 | -50.2 | Dark | Down | 56.2 | 294.0 | Up | 10:29:29 - 10:59:29 | 3908 |
| Redmond | 10:44:28 | -50.3 | Dark | Down | 56.1 | 294.5 | Up | 10:29:28 - 10:59:28 | 3869 |
| Sisters | 10:44:29 | -50.6 | Dark | Down | 56.4 | 294.4 | Up | 10:29:29 - 10:59:29 | 3860 |
| Bend | 10:44:28 | -50.5 | Dark | Down | 56.1 | 294.8 | Up | 10:29:28 - 10:59:28 | 3843 |
| Oregon Observatory | 10:44:28 | -50.6 | Dark | Down | 56.1 | 295.0 | Up | 10:29:28 - 10:59:28 | 3821 |
| La Pine/Gilchrist | 10:44:28 | -50.7 | Dark | Down | 56.1 | 295.2 | Up | 10:29:28 - 10:59:28 | 3798 |
| North Lake | 10:44:26 | -50.4 | Dark | Down | 55.5 | 295.9 | Up | 10:29:26 - 10:59:26 | 3771 |
| Paisley | 10:44:24 | -50.4 | Dark | Down | 55.0 | 296.7 | Up | 10:29:24 - 10:59:24 | 3725 |
| Lakeview | 10:44:23 | -50.4 | Dark | Down | 54.7 | 297.4 | Up | 10:29:23 - 10:59:23 | 3679 |
| Chiloquin | 10:44:28 | -51.3 | Dark | Down | 55.8 | 296.6 | Up | 10:29:28 - 10:59:28 | 3673 |
| Klamath Falls | 10:44:27 | -51.4 | Dark | Down | 55.6 | 297.1 | Up | 10:29:27 - 10:59:27 | 3640 |
| Tulelake | 10:44:26 | -51.2 | Dark | Down | 55.3 | 297.5 | Up | 10:29:26 - 10:59:26 | 3621 |
| Cedarville | 10:44:22 | -50.4 | Dark | Down | 54.2 | 298.2 | Up | 10:29:22 - 10:59:22 | 3617 |
| Fall River/Burney | 10:44:25 | -51.4 | Dark | Down | 54.8 | 298.7 | Up | 10:29:25 - 10:59:25 | 3529 |
| Susanville | 10:44:22 | -51.0 | Dark | Down | 54.0 | 299.5 | Up | 10:29:22 - 10:59:22 | 3487 |
| Gimple | 10:44:22 | -51.2 | Dark | Down | 54.0 | 299.8 | Up | 10:29:22 - 10:59:22 | 3452 |
| Greenville | 10:44:22 | -51.3 | Dark | Down | 54.1 | 299.8 | Up | 10:29:22 - 10:59:22 | 3450 |
| Portola | 10:44:20 | -51.0 | Dark | Down | 53.6 | 300.3 | Up | 10:29:20 - 10:59:20 | 3431 |
| Quincy | 10:44:22 | -51.3 | Dark | Down | 54.0 | 300.1 | Up | 10:29:22 - 10:59:22 | 3429 |
| Reno | 10:44:18 | -50.6 | Dark | Down | 53.0 | 300.6 | Up | 10:29:18 - 10:59:18 | 3425 |
| Yerington | 10:44:16 | -50.2 | Dark | Down | 52.3 | 301.3 | Up | 10:29:16 - 10:59:16 | 3390 |
| Carson City | 10:44:17 | -50.6 | Dark | Down | 52.8 | 301.1 | Up | 10:29:17 - 10:59:17 | 3389 |
| Gardnerville | 10:44:17 | -50.7 | Dark | Down | 52.7 | 301.3 | Up | 10:29:17 - 10:59:17 | 3365 |
| Tonopah | 10:44:09 | -48.9 | Dark | Down | 50.6 | 302.5 | Up | 10:29:09 - 10:59:09 | 3363 |
| Hawthorne | 10:44:13 | -49.9 | Dark | Down | 51.7 | 301.9 | Up | 10:29:13 - 10:59:13 | 3361 |
| Lee Vining | 10:44:14 | -50.3 | Dark | Down | 51.8 | 302.5 | Up | 10:29:14 - 10:59:14 | 3287 |
| Indian Springs | 10:44:02 | -47.8 | Dark | Down | 48.7 | 304.1 | Up | 10:29:02 - 10:59:02 | 3271 |
| Beatty | 10:44:06 | -48.7 | Dark | Down | 49.6 | 303.7 | Up | 10:29:06 - 10:59:06 | 3263 |
| Bishop | 10:44:11 | -49.9 | Dark | Down | 51.0 | 303.1 | Up | 10:29:11 - 10:59:11 | 3251 |
| Henderson | 10:44:00 | -47.3 | Dark | Down | 48.0 | 304.7 | Up | 10:29:00 - 10:59:00 | 3244 |
| Patrick | 10:43:56 | -46.5 | Dark | Down | 46.9 | 305.3 | Up | 10:28:56 - 10:58:56 | 3227 |
| DCO | 10:43:54 | -45.9 | Dark | Down | 46.2 | 305.6 | Up | 10:28:54 - 10:58:54 | 3226 |
| Kingman/Dolan Springs | 10:43:56 | -46.6 | Dark | Down | 46.9 | 305.5 | Up | 10:28:56 - 10:58:56 | 3197 |
| Searchlight/Boulder City | 10:43:59 | -47.3 | Dark | Down | 47.6 | 305.2 | Up | 10:28:59 - 10:58:59 | 3190 |
| Lone Pine | 10:44:09 | -49.7 | Dark | Down | 50.3 | 303.9 | Up | 10:29:09 - 10:59:09 | 3186 |
| Laughlin/Bullhead City | 10:43:58 | -47.1 | Dark | Down | 47.2 | 305.5 | Up | 10:28:58 - 10:58:58 | 3174 |
| Mohave Valley | 10:43:57 | -47.1 | Dark | Down | 47.1 | 305.7 | Up | 10:28:57 - 10:58:57 | 3148 |
| Lake Havasu City | 10:43:56 | -46.9 | Dark | Down | 46.7 | 306.1 | Up | 10:28:56 - 10:58:56 | 3118 |
| Parker | 10:43:55 | -46.9 | Dark | Down | 46.4 | 306.4 | Up | 10:28:55 - 10:58:55 | 3085 |
| Blythe | 10:43:56 | -47.1 | Dark | Down | 46.3 | 306.8 | Up | 10:28:56 - 10:58:56 | 3021 |
| CPSLO | 10:44:16 | -51.9 | Dark | Down | 51.3 | 305.2 | Up | 10:29:16 - 10:59:16 | 2966 |
| Idyllwild | 10:44:02 | -48.9 | Dark | Down | 47.8 | 306.7 | Up | 10:29:02 - 10:59:02 | 2950 |
| Calipatria | 10:43:58 | -47.9 | Dark | Down | 46.6 | 307.2 | Up | 10:28:58 - 10:58:58 | 2936 |
| Yuma | 10:43:55 | -47.2 | Dark | Down | 45.8 | 307.6 | Up | 10:28:55 - 10:58:55 | 2929 |
| Wildwood | 10:44:09 | -50.4 | Dark | Down | 49.2 | 306.4 | Up | 10:29:09 - 10:59:09 | 2915 |
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 341275, (2018/12/14 10:47UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 31.87 89 34Bet Aur 05:59:31.6 +44:56:51 1.9 11.72 109 PPM 047420 04:51:09.2 +48:44:26 5.7 0.73 97 PPM 047530 04:57:04.6 +47:52:43 7.8 0.61 98 PPM 047460 04:53:50.5 +47:57:22 8.9 0.21 98 PPM 047473 04:54:30.0 +48:04:34 10.2 0.14 98 341275 04:53:49.8 +48:09:55 16.4 98 Positions are for J2000
Event circumstances last updated at 2018/05/24 18:10:45 UT
Marc W. Buie, Southwest Research Institute