Event between (131697) 01XH255 and star UC4-536-049276 with event index number of 80144
Geocentric closest approach at 2017/05/10 05:02:38 UTC
J2000 position of star is 09:05:54.3 +17:00:48
Equinox of date position of star is 09:06:49.5 +16:56:48
Stellar brightness R=16.6
Star is 88 degrees from the moon.
Moon is 99% illuminated.
TNO apparent brightness V=23.6
[RECON map]
TNO is 33.1 AU from the Sun
and 33.1 AU from the Earth.
The TNO is moving 7.8
km/sec on the sky relative to the star, or,
1.2 arcsec/hr.
The 1-sigma error in the time of the event is 772 seconds.
The 1-sigma cross-track error in the shadow position is
2795 km.
The sky-plane scale is
24039.5 km/arcsec.
The TNO has an absolute magnitude Hv=8.2
Diameter=138.0 km assuming a 5% albedo -- 17.7 sec chord
Diameter=56.4 km assuming a 30% albedo -- 7.2 sec chord
Dynamical classification is 5:4E
Star training set for 131697, (2017/05/10 05:03UT) Object RA Dec mag sep mel Regulus 10:09:17.7 +11:52:54 1.3 15.93 72 63Omi2Cnc 08:58:33.2 +15:30:49 5.8 2.46 90 PPM 126110 09:07:13.8 +17:02:29 8.1 0.13 88 131697 09:06:52.6 +16:56:35 16.6 88 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
1.2 sigma about the mid-time.
The median site spacing is 12.7 km
RECON observability=0.9 and success probability=7.5%
Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
Oroville | 05:06:01 | -13.7 | AT | Up | 39.4 | 248.5 | Up | 04:51:01 - 05:21:01 | 3082 |
Tonasket | 05:06:06 | -13.8 | AT | Up | 39.5 | 248.7 | Up | 04:51:06 - 05:21:06 | 3068 |
Okanogan | 05:06:10 | -14.0 | AT | Up | 39.7 | 248.9 | Up | 04:51:10 - 05:21:10 | 3044 |
Niwot | 05:08:53 | -27.0 | Dark | Up | 30.8 | 266.8 | Up | 04:53:53 - 05:23:53 | 3044 |
Brewster | 05:06:12 | -14.2 | AT | Up | 39.9 | 248.9 | Up | 04:51:12 - 05:21:12 | 3021 |
Manson/Chelan | 05:06:13 | -14.2 | AT | Up | 40.2 | 248.7 | Up | 04:51:13 - 05:21:13 | 2997 |
Entiat | 05:06:16 | -14.3 | AT | Up | 40.3 | 248.8 | Up | 04:51:16 - 05:21:16 | 2981 |
Wenatchee | 05:06:17 | -14.4 | AT | Up | 40.4 | 248.9 | Up | 04:51:17 - 05:21:17 | 2963 |
Pasco | 05:06:38 | -15.9 | AT | Up | 40.0 | 251.1 | Up | 04:51:38 - 05:21:38 | 2934 |
Ellensburg | 05:06:21 | -14.7 | AT | Up | 40.7 | 249.1 | Up | 04:51:21 - 05:21:21 | 2931 |
PNWRO | 05:06:43 | -16.2 | AT | Up | 39.9 | 251.5 | Up | 04:51:43 - 05:21:43 | 2927 |
George/Umatilla | 05:06:39 | -16.0 | AT | Up | 40.3 | 251.1 | Up | 04:51:39 - 05:21:39 | 2905 |
Yakima | 05:06:25 | -15.0 | AT | Up | 40.9 | 249.4 | Up | 04:51:25 - 05:21:25 | 2905 |
Toppenish/White Swan | 05:06:29 | -15.2 | AT | Up | 40.8 | 249.8 | Up | 04:51:29 - 05:21:29 | 2898 |
Goldendale | 05:06:32 | -15.4 | AT | Up | 41.3 | 249.8 | Up | 04:51:32 - 05:21:32 | 2849 |
The Dalles | 05:06:34 | -15.4 | AT | Up | 41.6 | 249.7 | Up | 04:51:34 - 05:21:34 | 2822 |
Maupin | 05:06:39 | -15.8 | AT | Up | 41.7 | 250.1 | Up | 04:51:39 - 05:21:39 | 2799 |
Madras/Culver | 05:06:45 | -16.2 | AT | Up | 41.9 | 250.6 | Up | 04:51:45 - 05:21:45 | 2763 |
Redmond | 05:06:48 | -16.4 | AT | Up | 42.0 | 250.9 | Up | 04:51:48 - 05:21:48 | 2738 |
Sisters | 05:06:46 | -16.2 | AT | Up | 42.3 | 250.5 | Up | 04:51:46 - 05:21:46 | 2726 |
Bend | 05:06:50 | -16.5 | AT | Up | 42.2 | 250.9 | Up | 04:51:50 - 05:21:50 | 2720 |
Oregon Observatory | 05:06:51 | -16.6 | AT | Up | 42.3 | 251.0 | Up | 04:51:51 - 05:21:51 | 2704 |
La Pine/Gilchrist | 05:06:51 | -16.7 | AT | Up | 42.4 | 251.1 | Up | 04:51:51 - 05:21:51 | 2688 |
North Lake | 05:07:01 | -17.3 | AT | Up | 42.1 | 252.0 | Up | 04:52:01 - 05:22:01 | 2682 |
Paisley | 05:07:08 | -17.9 | AT | Up | 42.0 | 252.8 | Up | 04:52:08 - 05:22:08 | 2658 |
Lakeview | 05:07:15 | -18.4 | Dark | Up | 42.0 | 253.5 | Up | 04:52:15 - 05:22:15 | 2632 |
Chiloquin | 05:07:04 | -17.3 | AT | Up | 43.0 | 251.8 | Up | 04:52:04 - 05:22:04 | 2602 |
Cedarville | 05:07:26 | -19.0 | Dark | Up | 42.0 | 254.2 | Up | 04:52:26 - 05:22:26 | 2594 |
Klamath Falls | 05:07:07 | -17.6 | AT | Up | 43.0 | 252.2 | Up | 04:52:07 - 05:22:07 | 2581 |
Tulelake | 05:07:14 | -18.0 | AT | Up | 42.9 | 252.7 | Up | 04:52:14 - 05:22:14 | 2574 |
Fall River/Burney | 05:07:23 | -18.7 | Dark | Up | 43.0 | 253.6 | Up | 04:52:23 - 05:22:23 | 2515 |
Susanville | 05:07:35 | -19.6 | Dark | Up | 42.6 | 254.8 | Up | 04:52:35 - 05:22:35 | 2500 |
Reno | 05:07:48 | -20.7 | Dark | Up | 42.2 | 256.3 | Up | 04:52:48 - 05:22:48 | 2472 |
Greenville | 05:07:34 | -19.6 | Dark | Up | 42.9 | 254.8 | Up | 04:52:34 - 05:22:34 | 2470 |
Tonopah | 05:08:21 | -23.2 | Dark | Up | 40.4 | 259.7 | Up | 04:53:21 - 05:23:21 | 2468 |
Portola | 05:07:41 | -20.1 | Dark | Up | 42.6 | 255.6 | Up | 04:52:41 - 05:22:41 | 2466 |
Yerington | 05:07:57 | -21.4 | Dark | Up | 41.8 | 257.4 | Up | 04:52:57 - 05:22:57 | 2458 |
Quincy | 05:07:38 | -19.8 | Dark | Up | 43.0 | 255.0 | Up | 04:52:38 - 05:22:38 | 2456 |
Carson City | 05:07:51 | -21.0 | Dark | Up | 42.2 | 256.7 | Up | 04:52:51 - 05:22:51 | 2448 |
Hawthorne | 05:08:08 | -22.1 | Dark | Up | 41.4 | 258.2 | Up | 04:53:08 - 05:23:08 | 2446 |
Gardnerville | 05:07:56 | -21.2 | Dark | Up | 42.2 | 257.0 | Up | 04:52:56 - 05:22:56 | 2432 |
Indian Springs | 05:08:46 | -25.2 | Dark | Up | 39.3 | 262.1 | Up | 04:53:46 - 05:23:46 | 2423 |
DCO | 05:09:16 | -27.7 | Dark | Up | 37.4 | 265.0 | Up | 04:54:16 - 05:24:16 | 2417 |
Henderson | 05:08:55 | -26.0 | Dark | Up | 38.8 | 263.0 | Up | 04:53:55 - 05:23:55 | 2412 |
Patrick | 05:09:09 | -27.1 | Dark | Up | 37.9 | 264.3 | Up | 04:54:09 - 05:24:09 | 2411 |
Beatty | 05:08:36 | -24.4 | Dark | Up | 40.2 | 261.1 | Up | 04:53:36 - 05:23:36 | 2404 |
Kingman/Dolan Springs | 05:09:10 | -27.1 | Dark | Up | 38.1 | 264.4 | Up | 04:54:10 - 05:24:10 | 2388 |
Lee Vining | 05:08:11 | -22.3 | Dark | Up | 41.9 | 258.4 | Up | 04:53:11 - 05:23:11 | 2388 |
Searchlight/Boulder City | 05:09:03 | -26.5 | Dark | Up | 38.8 | 263.6 | Up | 04:54:03 - 05:24:03 | 2374 |
Bishop | 05:08:21 | -23.1 | Dark | Up | 41.4 | 259.5 | Up | 04:53:21 - 05:23:21 | 2373 |
Laughlin/Bullhead City | 05:09:07 | -26.9 | Dark | Up | 38.6 | 264.0 | Up | 04:54:07 - 05:24:07 | 2365 |
Mohave Valley | 05:09:10 | -27.1 | Dark | Up | 38.6 | 264.3 | Up | 04:54:10 - 05:24:10 | 2346 |
Lone Pine | 05:08:31 | -23.9 | Dark | Up | 41.3 | 260.4 | Up | 04:53:31 - 05:23:31 | 2331 |
Lake Havasu City | 05:09:17 | -27.6 | Dark | Up | 38.4 | 264.8 | Up | 04:54:17 - 05:24:17 | 2327 |
Parker | 05:09:18 | -27.9 | Dark | Up | 38.4 | 265.1 | Up | 04:54:18 - 05:24:18 | 2302 |
Blythe | 05:09:24 | -28.1 | Dark | Up | 38.7 | 265.3 | Up | 04:54:24 - 05:24:24 | 2252 |
Yuma | 05:09:34 | -28.8 | Dark | Up | 38.7 | 266.0 | Up | 04:54:34 - 05:24:34 | 2181 |
Calipatria | 05:09:24 | -28.0 | Dark | Up | 39.5 | 265.1 | Up | 04:54:24 - 05:24:24 | 2177 |
Idyllwild | 05:09:10 | -26.8 | Dark | Up | 40.4 | 263.9 | Up | 04:54:10 - 05:24:10 | 2175 |
CPSLO | 05:08:29 | -23.4 | Dark | Up | 43.6 | 259.7 | Up | 04:53:29 - 05:23:29 | 2132 |
Wildwood | 05:08:53 | -25.5 | Dark | Up | 42.0 | 262.3 | Up | 04:53:53 - 05:23:53 | 2125 |
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 131697, (2017/05/10 05:03UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 15.93 72 63Omi2Cnc 08:57:35.2 +15:34:53 5.8 2.46 90 PPM 126110 09:06:15.6 +17:06:42 8.1 0.13 88 131697 09:05:54.3 +17:00:48 16.6 88 Positions are for J2000
Event circumstances last updated at 2016/06/09 18:39:20 UT
Marc W. Buie, Southwest Research Institute