Event between (119315) 01SQ73 and star UC4-652-044694 with event index number of 170153
Geocentric closest approach at 2018/10/28 11:29:37 UTC
J2000 position of star is 07:09:40.1 +40:18:38
Equinox of date position of star is 07:10:52.0 +40:16:54
Stellar brightness R=15.7,
use SENSEUP=128
Star is 29 degrees from the moon.
Moon is 83% illuminated.
TNO apparent brightness V=22.7
[RECON map]
TNO is 19.6 AU from the Sun
and 19.2 AU from the Earth.
The TNO is moving 9.8
km/sec on the sky relative to the star, or,
2.5 arcsec/hr.
The 1-sigma error in the time of the event is 377 seconds.
The 1-sigma cross-track error in the shadow position is
5100 km.
The sky-plane scale is
13940.6 km/arcsec.
The TNO has an absolute magnitude Hv=9.6
Diameter=72.4 km assuming a 5% albedo -- 7.4 sec chord
Diameter=29.6 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is CENTAURR
Star training set for 119315, (2018/10/28 11:30UT) Object RA Dec mag sep mel Pollux 07:46:28.0 +27:58:45 1.1 14.31 32 34Bet Aur 06:00:54.6 +44:56:50 1.9 13.68 25 66 Aur 07:25:26.5 +40:38:04 5.2 2.78 32 PPM 049665 07:12:27.4 +40:00:36 7.6 0.39 29 PPM 049660 07:12:21.0 +40:19:24 11.2 0.27 29 119315 07:10:58.3 +40:16:44 15.7 29 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
2.4 sigma about the mid-time.
The median site spacing is 9.4 km
RECON observability=1.0 and success probability=8.3%
Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
Niwot | 11:29:35 | -22.7 | Dark | Up | 87.4 | 84.5 | Up | 11:14:35 - 11:44:35 | 3771 |
Oroville | 11:31:56 | -31.0 | Dark | Up | 75.1 | 119.0 | Up | 11:16:56 - 11:46:56 | 3319 |
Tonasket | 11:31:56 | -31.0 | Dark | Up | 75.3 | 118.3 | Up | 11:16:56 - 11:46:56 | 3304 |
Okanogan | 11:31:52 | -31.2 | Dark | Up | 75.3 | 116.8 | Up | 11:16:52 - 11:46:52 | 3273 |
Brewster | 11:31:51 | -31.4 | Dark | Up | 75.3 | 115.5 | Up | 11:16:51 - 11:46:51 | 3243 |
Manson/Chelan | 11:31:52 | -31.7 | Dark | Up | 75.2 | 114.1 | Up | 11:16:52 - 11:46:52 | 3207 |
Entiat | 11:31:48 | -31.9 | Dark | Up | 75.2 | 113.2 | Up | 11:16:48 - 11:46:48 | 3188 |
Wenatchee | 11:31:47 | -32.0 | Dark | Up | 75.2 | 112.1 | Up | 11:16:47 - 11:46:47 | 3165 |
Pasco | 11:31:30 | -31.6 | Dark | Up | 76.4 | 109.8 | Up | 11:16:30 - 11:46:30 | 3161 |
PNWRO | 11:31:29 | -31.5 | Dark | Up | 76.6 | 109.2 | Up | 11:16:29 - 11:46:29 | 3159 |
George/Umatilla | 11:31:30 | -31.8 | Dark | Up | 76.3 | 108.1 | Up | 11:16:30 - 11:46:30 | 3126 |
Ellensburg | 11:31:46 | -32.3 | Dark | Up | 75.2 | 110.3 | Up | 11:16:46 - 11:46:46 | 3124 |
Yakima | 11:31:42 | -32.4 | Dark | Up | 75.4 | 108.8 | Up | 11:16:42 - 11:46:42 | 3096 |
Toppenish/White Swan | 11:31:38 | -32.4 | Dark | Up | 75.5 | 108.2 | Up | 11:16:38 - 11:46:38 | 3092 |
Goldendale | 11:31:35 | -32.8 | Dark | Up | 75.4 | 105.5 | Up | 11:16:35 - 11:46:35 | 3029 |
The Dalles | 11:31:34 | -33.1 | Dark | Up | 75.2 | 104.2 | Up | 11:16:34 - 11:46:34 | 2991 |
Maupin | 11:31:32 | -33.2 | Dark | Up | 75.4 | 102.8 | Up | 11:16:32 - 11:46:32 | 2970 |
Madras/Culver | 11:31:26 | -33.4 | Dark | Up | 75.4 | 100.6 | Up | 11:16:26 - 11:46:26 | 2930 |
Redmond | 11:31:23 | -33.5 | Dark | Up | 75.4 | 99.2 | Up | 11:16:23 - 11:46:23 | 2903 |
DCO | 11:29:19 | -29.3 | Dark | Up | 79.5 | 56.7 | Up | 11:14:19 - 11:44:19 | 2892 |
Bend | 11:31:21 | -33.6 | Dark | Up | 75.4 | 98.2 | Up | 11:16:21 - 11:46:21 | 2880 |
Sisters | 11:31:25 | -33.8 | Dark | Up | 75.2 | 98.8 | Up | 11:16:25 - 11:46:25 | 2880 |
Oregon Observatory | 11:31:19 | -33.8 | Dark | Up | 75.3 | 97.4 | Up | 11:16:19 - 11:46:19 | 2860 |
Patrick | 11:29:26 | -29.9 | Dark | Up | 79.2 | 59.3 | Up | 11:14:26 - 11:44:26 | 2855 |
North Lake | 11:31:13 | -33.6 | Dark | Up | 75.7 | 95.5 | Up | 11:16:13 - 11:46:13 | 2851 |
La Pine/Gilchrist | 11:31:20 | -33.9 | Dark | Up | 75.3 | 96.6 | Up | 11:16:20 - 11:46:20 | 2842 |
Paisley | 11:31:06 | -33.5 | Dark | Up | 76.0 | 93.6 | Up | 11:16:06 - 11:46:06 | 2838 |
Kingman/Dolan Springs | 11:29:26 | -30.0 | Dark | Up | 79.0 | 58.6 | Up | 11:14:26 - 11:44:26 | 2828 |
Lakeview | 11:31:01 | -33.5 | Dark | Up | 76.2 | 91.7 | Up | 11:16:01 - 11:46:01 | 2816 |
Henderson | 11:29:37 | -30.7 | Dark | Up | 78.8 | 63.7 | Up | 11:14:37 - 11:44:37 | 2808 |
Indian Springs | 11:29:45 | -31.1 | Dark | Up | 78.5 | 66.8 | Up | 11:14:45 - 11:44:45 | 2788 |
Laughlin/Bullhead City | 11:29:29 | -30.4 | Dark | Up | 78.6 | 59.3 | Up | 11:14:29 - 11:44:29 | 2788 |
Cedarville | 11:30:54 | -33.5 | Dark | Up | 76.3 | 89.1 | Up | 11:15:54 - 11:45:54 | 2785 |
Searchlight/Boulder City | 11:29:32 | -30.7 | Dark | Up | 78.5 | 61.1 | Up | 11:14:32 - 11:44:32 | 2779 |
Mohave Valley | 11:29:25 | -30.5 | Dark | Up | 78.5 | 58.2 | Up | 11:14:25 - 11:44:25 | 2773 |
Lake Havasu City | 11:29:20 | -30.3 | Dark | Up | 78.4 | 56.2 | Up | 11:14:20 - 11:44:20 | 2768 |
Tonopah | 11:30:06 | -32.1 | Dark | Up | 77.9 | 74.5 | Up | 11:15:06 - 11:45:06 | 2767 |
Parker | 11:29:19 | -30.3 | Dark | Up | 78.2 | 54.7 | Up | 11:14:19 - 11:44:19 | 2750 |
Chiloquin | 11:31:11 | -34.4 | Dark | Up | 75.1 | 92.0 | Up | 11:16:11 - 11:46:11 | 2745 |
Beatty | 11:29:54 | -31.9 | Dark | Up | 77.9 | 69.1 | Up | 11:14:54 - 11:44:54 | 2729 |
Tulelake | 11:31:03 | -34.3 | Dark | Up | 75.4 | 90.0 | Up | 11:16:03 - 11:46:03 | 2729 |
Klamath Falls | 11:31:08 | -34.5 | Dark | Up | 75.1 | 90.8 | Up | 11:16:08 - 11:46:08 | 2727 |
Yerington | 11:30:47 | -33.3 | Dark | Up | 76.8 | 78.8 | Up | 11:15:47 - 11:45:47 | 2698 |
Blythe | 11:29:12 | -30.6 | Dark | Up | 77.7 | 53.3 | Up | 11:14:12 - 11:44:12 | 2697 |
Hawthorne | 11:30:17 | -33.1 | Dark | Up | 77.0 | 76.9 | Up | 11:15:17 - 11:45:17 | 2697 |
Reno | 11:30:47 | -33.7 | Dark | Up | 76.4 | 81.1 | Up | 11:15:47 - 11:45:47 | 2683 |
Susanville | 11:30:48 | -34.1 | Dark | Up | 75.8 | 84.4 | Up | 11:15:48 - 11:45:48 | 2680 |
Fall River/Burney | 11:30:56 | -34.5 | Dark | Up | 75.4 | 86.5 | Up | 11:15:56 - 11:45:56 | 2673 |
Carson City | 11:30:47 | -33.8 | Dark | Up | 76.3 | 79.6 | Up | 11:15:47 - 11:45:47 | 2664 |
Portola | 11:30:47 | -34.1 | Dark | Up | 75.9 | 82.0 | Up | 11:15:47 - 11:45:47 | 2654 |
Gardnerville | 11:30:47 | -33.8 | Dark | Up | 76.3 | 78.6 | Up | 11:15:47 - 11:45:47 | 2653 |
Gimple | 11:30:47 | -34.4 | Dark | Up | 75.7 | 83.2 | Up | 11:15:47 - 11:45:47 | 2648 |
Greenville | 11:30:47 | -34.4 | Dark | Up | 75.6 | 83.2 | Up | 11:15:47 - 11:45:47 | 2643 |
Yuma | 11:29:03 | -30.8 | Dark | Up | 77.1 | 50.2 | Up | 11:14:03 - 11:44:03 | 2641 |
Bishop | 11:30:07 | -33.1 | Dark | Up | 76.8 | 72.0 | Up | 11:15:07 - 11:45:07 | 2640 |
Quincy | 11:30:47 | -34.5 | Dark | Up | 75.6 | 82.4 | Up | 11:15:47 - 11:45:47 | 2630 |
Lee Vining | 11:30:16 | -33.6 | Dark | Up | 76.5 | 74.6 | Up | 11:15:16 - 11:45:16 | 2627 |
Lone Pine | 11:29:58 | -33.0 | Dark | Up | 76.8 | 68.8 | Up | 11:14:58 - 11:44:58 | 2617 |
Calipatria | 11:29:15 | -31.5 | Dark | Up | 76.8 | 53.1 | Up | 11:14:15 - 11:44:15 | 2597 |
Idyllwild | 11:29:25 | -32.4 | Dark | Up | 76.4 | 56.9 | Up | 11:14:25 - 11:44:25 | 2542 |
Wildwood | 11:29:37 | -33.8 | Dark | Up | 75.2 | 60.2 | Up | 11:14:37 - 11:44:37 | 2424 |
CPSLO | 11:30:00 | -35.3 | Dark | Up | 74.4 | 65.7 | Up | 11:15:00 - 11:45:00 | 2351 |
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 119315, (2018/10/28 11:30UT) Object RA Dec mag sep mel Pollux 07:45:18.1 +28:01:33 1.1 14.31 32 34Bet Aur 05:59:31.6 +44:56:51 1.9 13.68 25 66 Aur 07:24:08.5 +40:40:20 5.2 2.78 32 PPM 049665 07:11:09.4 +40:02:32 7.6 0.39 29 PPM 049660 07:11:02.8 +40:21:20 11.2 0.27 29 119315 07:09:40.1 +40:18:38 15.7 29 Positions are for J2000
Event circumstances last updated at 2017/04/24 16:34:06 UT
Marc W. Buie, Southwest Research Institute