Event between 14YG50 and star UC4-584-038365 with event index number of 241870
Geocentric closest approach at 2018/03/21 08:59:31 UTC
J2000 position of star is 07:24:39.1 +26:40:04
Equinox of date position of star is 07:25:45.9 +26:37:52
Stellar brightness R=15.8,
use SENSEUP=128
Star is 61 degrees from the moon.
Moon is 16% illuminated.
TNO apparent brightness V=22.5
[RECON map]
TNO is 34.3 AU from the Sun
and 34.0 AU from the Earth.
The TNO is moving 6.2
km/sec on the sky relative to the star, or,
0.9 arcsec/hr.
The 1-sigma error in the time of the event is 816 seconds.
The 1-sigma cross-track error in the shadow position is
5493 km.
The sky-plane scale is
24623.2 km/arcsec.
The TNO has an absolute magnitude Hv=7.0
Diameter=235.5 km assuming a 5% albedo -- 37.8 sec chord
Diameter=96.1 km assuming a 30% albedo -- 15.4 sec chord
Dynamical classification is 3:2E
Star training set for 14YG50, (2018/03/21 09:00UT) Object RA Dec mag sep mel Pollux 07:46:25.7 +27:58:51 1.1 4.78 66 59 Gem 07:25:41.3 +27:36:04 6.0 0.97 61 PPM 097404 07:22:23.0 +26:27:32 8.5 0.78 61 PPM 097493 07:26:53.9 +26:35:27 9.9 0.25 62 PPM 097473 07:25:46.3 +26:38:51 11.4 0.02 61 14YG50 07:25:46.5 +26:37:51 15.8 62 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
1.1 sigma about the mid-time.
The median site spacing is 24.6 km
RECON observability=0.8 and success probability=7.1%
Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
Oroville | 08:44:28 | -40.1 | Dark | Down | 26.6 | 281.0 | Low | 08:29:28 - 08:59:28 | 4507 |
Tonasket | 08:44:25 | -40.3 | Dark | Down | 26.5 | 281.1 | Low | 08:29:25 - 08:59:25 | 4482 |
Okanogan | 08:44:25 | -40.6 | Dark | Down | 26.5 | 281.1 | Low | 08:29:25 - 08:59:25 | 4444 |
Brewster | 08:44:27 | -40.9 | Dark | Down | 26.6 | 281.1 | Low | 08:29:27 - 08:59:27 | 4411 |
Manson/Chelan | 08:44:27 | -41.2 | Dark | Down | 26.8 | 281.0 | Low | 08:29:27 - 08:59:27 | 4382 |
Entiat | 08:44:28 | -41.4 | Dark | Down | 26.8 | 281.1 | Low | 08:29:28 - 08:59:28 | 4357 |
Wenatchee | 08:44:25 | -41.7 | Dark | Down | 26.8 | 281.1 | Low | 08:29:25 - 08:59:25 | 4328 |
Ellensburg | 08:44:26 | -42.1 | Dark | Down | 26.9 | 281.2 | Low | 08:29:26 - 08:59:26 | 4280 |
Yakima | 08:44:25 | -42.5 | Dark | Down | 26.8 | 281.4 | Low | 08:29:25 - 08:59:25 | 4237 |
Pasco | 08:44:16 | -42.6 | Dark | Down | 25.8 | 282.4 | Low | 08:29:16 - 08:59:16 | 4231 |
Toppenish/White Swan | 08:44:23 | -42.7 | Dark | Down | 26.7 | 281.6 | Low | 08:29:23 - 08:59:23 | 4217 |
PNWRO | 08:44:14 | -42.8 | Dark | Down | 25.6 | 282.7 | Low | 08:29:14 - 08:59:14 | 4210 |
George/Umatilla | 08:44:13 | -43.0 | Dark | Down | 25.9 | 282.4 | Low | 08:29:13 - 08:59:13 | 4191 |
Goldendale | 08:44:21 | -43.3 | Dark | Down | 26.9 | 281.6 | Low | 08:29:21 - 08:59:21 | 4150 |
The Dalles | 08:44:21 | -43.6 | Dark | Down | 27.1 | 281.4 | Low | 08:29:21 - 08:59:21 | 4119 |
Maupin | 08:44:20 | -44.0 | Dark | Down | 26.9 | 281.7 | Low | 08:29:20 - 08:59:20 | 4076 |
Madras/Culver | 08:44:20 | -44.5 | Dark | Down | 26.9 | 282.0 | Low | 08:29:20 - 08:59:20 | 4017 |
Niwot | 08:42:57 | -44.2 | Dark | Down | 14.5 | 292.8 | Really Low | 08:27:57 - 08:57:57 | 3985 |
Redmond | 08:44:18 | -44.9 | Dark | Down | 26.8 | 282.1 | Low | 08:29:18 - 08:59:18 | 3978 |
Sisters | 08:44:19 | -44.9 | Dark | Down | 27.1 | 281.8 | Low | 08:29:19 - 08:59:19 | 3972 |
Bend | 08:44:18 | -45.1 | Dark | Down | 26.9 | 282.1 | Low | 08:29:18 - 08:59:18 | 3952 |
Oregon Observatory | 08:44:16 | -45.3 | Dark | Down | 26.9 | 282.1 | Low | 08:29:16 - 08:59:16 | 3931 |
La Pine/Gilchrist | 08:44:17 | -45.5 | Dark | Down | 26.9 | 282.2 | Low | 08:29:17 - 08:59:17 | 3908 |
North Lake | 08:44:12 | -45.8 | Dark | Down | 26.4 | 282.7 | Low | 08:29:12 - 08:59:12 | 3874 |
Paisley | 08:44:09 | -46.3 | Dark | Down | 26.1 | 283.2 | Low | 08:29:09 - 08:59:09 | 3822 |
Chiloquin | 08:44:16 | -46.6 | Dark | Down | 26.9 | 282.5 | Low | 08:29:16 - 08:59:16 | 3781 |
Lakeview | 08:44:05 | -46.8 | Dark | Down | 25.8 | 283.6 | Low | 08:29:05 - 08:59:05 | 3772 |
Klamath Falls | 08:44:14 | -47.0 | Dark | Down | 26.8 | 282.7 | Low | 08:29:14 - 08:59:14 | 3746 |
Tulelake | 08:44:12 | -47.2 | Dark | Down | 26.5 | 283.0 | Low | 08:29:12 - 08:59:12 | 3723 |
Cedarville | 08:44:02 | -47.4 | Dark | Down | 25.5 | 284.0 | Low | 08:29:02 - 08:59:02 | 3706 |
Fall River/Burney | 08:44:13 | -48.1 | Dark | Down | 26.3 | 283.5 | Low | 08:29:13 - 08:59:13 | 3628 |
Susanville | 08:44:02 | -48.6 | Dark | Down | 25.6 | 284.2 | Low | 08:29:02 - 08:59:02 | 3576 |
Gimple | 08:44:02 | -48.9 | Dark | Down | 25.7 | 284.2 | Low | 08:29:02 - 08:59:02 | 3542 |
Greenville | 08:44:04 | -48.9 | Dark | Down | 25.8 | 284.2 | Low | 08:29:04 - 08:59:04 | 3540 |
Quincy | 08:44:02 | -49.1 | Dark | Down | 25.7 | 284.3 | Low | 08:29:02 - 08:59:02 | 3518 |
Portola | 08:43:59 | -49.1 | Dark | Down | 25.3 | 284.6 | Low | 08:28:59 - 08:58:59 | 3515 |
Reno | 08:43:55 | -49.3 | Dark | Down | 24.8 | 285.1 | Low | 08:28:55 - 08:58:55 | 3502 |
Carson City | 08:43:54 | -49.6 | Dark | Down | 24.7 | 285.2 | Low | 08:28:54 - 08:58:54 | 3464 |
Yerington | 08:43:51 | -49.7 | Dark | Down | 24.2 | 285.6 | Low | 08:28:51 - 08:58:51 | 3458 |
Gardnerville | 08:43:55 | -49.8 | Dark | Down | 24.6 | 285.4 | Low | 08:28:55 - 08:58:55 | 3439 |
Hawthorne | 08:43:46 | -50.0 | Dark | Down | 23.7 | 286.1 | Low | 08:28:46 - 08:58:46 | 3421 |
Tonopah | 08:43:36 | -50.1 | Dark | Down | 22.5 | 287.0 | Low | 08:28:36 - 08:58:36 | 3407 |
Lee Vining | 08:43:48 | -50.7 | Dark | Down | 23.9 | 286.1 | Low | 08:28:48 - 08:58:48 | 3349 |
Bishop | 08:43:42 | -51.1 | Dark | Down | 23.2 | 286.7 | Low | 08:28:42 - 08:58:42 | 3303 |
Beatty | 08:43:33 | -51.1 | Dark | Down | 21.8 | 287.7 | Low | 08:28:33 - 08:58:33 | 3296 |
Indian Springs | 08:43:27 | -51.1 | Dark | Down | 20.9 | 288.4 | Low | 08:28:27 - 08:58:27 | 3291 |
Henderson | 08:43:23 | -51.4 | Dark | Down | 20.2 | 288.9 | Low | 08:28:23 - 08:58:23 | 3254 |
Lone Pine | 08:43:38 | -51.7 | Dark | Down | 22.7 | 287.2 | Low | 08:28:38 - 08:58:38 | 3231 |
Patrick | 08:43:16 | -51.6 | Dark | Down | 19.2 | 289.6 | Really Low | 08:28:16 - 08:58:16 | 3221 |
DCO | 08:43:12 | -51.7 | Dark | Down | 18.5 | 290.1 | Really Low | 08:28:12 - 08:58:12 | 3210 |
Searchlight/Boulder City | 08:43:21 | -51.9 | Dark | Down | 20.0 | 289.1 | Really Low | 08:28:21 - 08:58:21 | 3195 |
Kingman/Dolan Springs | 08:43:13 | -51.9 | Dark | Down | 19.3 | 289.6 | Really Low | 08:28:13 - 08:58:13 | 3192 |
Laughlin/Bullhead City | 08:43:18 | -52.1 | Dark | Down | 19.6 | 289.4 | Really Low | 08:28:18 - 08:58:18 | 3174 |
Mohave Valley | 08:43:16 | -52.3 | Dark | Down | 19.5 | 289.5 | Really Low | 08:28:16 - 08:58:16 | 3146 |
Lake Havasu City | 08:43:15 | -52.6 | Dark | Down | 19.2 | 289.7 | Really Low | 08:28:15 - 08:58:15 | 3111 |
Parker | 08:43:15 | -52.9 | Dark | Down | 19.1 | 289.8 | Really Low | 08:28:15 - 08:58:15 | 3075 |
CPSLO | 08:43:52 | -53.6 | Dark | Down | 24.3 | 286.5 | Low | 08:28:52 - 08:58:52 | 3028 |
Blythe | 08:43:18 | -53.5 | Dark | Down | 19.1 | 289.9 | Really Low | 08:28:18 - 08:58:18 | 3011 |
Idyllwild | 08:43:28 | -54.1 | Dark | Down | 20.8 | 288.9 | Low | 08:28:28 - 08:58:28 | 2962 |
Wildwood | 08:43:38 | -54.3 | Dark | Down | 22.4 | 287.9 | Low | 08:28:38 - 08:58:38 | 2950 |
Calipatria | 08:43:21 | -54.3 | Dark | Down | 19.7 | 289.6 | Really Low | 08:28:21 - 08:58:21 | 2932 |
Yuma | 08:43:15 | -54.4 | Dark | Down | 18.8 | 290.1 | Really Low | 08:28:15 - 08:58:15 | 2912 |
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 14YG50, (2018/03/21 09:00UT) Object RA Dec mag sep mel Pollux 07:45:18.1 +28:01:33 1.1 4.78 66 59 Gem 07:24:33.4 +27:38:16 6.0 0.97 61 PPM 097404 07:21:15.6 +26:29:39 8.5 0.78 61 PPM 097493 07:25:46.5 +26:37:41 9.9 0.25 62 PPM 097473 07:24:38.9 +26:41:04 11.4 0.02 61 14YG50 07:24:39.1 +26:40:04 15.8 61 Positions are for J2000
Event circumstances last updated at 2018/01/16 17:03:32 UT
Marc W. Buie, Southwest Research Institute