Event between (10199) Chariklo and star UC4-308-260724 with event index number of 126912
Geocentric closest approach at 2018/07/05 10:10:34 UTC
J2000 position of star is 19:16:49.0 -28:35:42
Equinox of date position of star is 19:17:57.7 -28:33:41
Stellar brightness R=14.8,
use SENSEUP=128
Star is 76 degrees from the moon.
Moon is 59% illuminated.
TNO apparent brightness V=18.5
[RECON map]
TNO is 15.9 AU from the Sun
and 14.9 AU from the Earth.
The TNO is moving 22.6
km/sec on the sky relative to the star, or,
7.5 arcsec/hr.
The 1-sigma error in the time of the event is 94 seconds.
The 1-sigma cross-track error in the shadow position is
1312 km.
The sky-plane scale is
10822.0 km/arcsec.
The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 12.8 sec chord
Diameter=117.7 km assuming a 30% albedo -- 5.2 sec chord
Dynamical classification is CENTAURR
Star training set for 10199, (2018/07/05 10:11UT) Object RA Dec mag sep mel Antares 16:30:32.7 -26:28:18 0.9 36.99 112 38Zet Sgr 19:03:47.3 -29:51:08 2.7 3.35 79 PPM 269757 19:26:13.8 -29:16:19 5.6 1.94 74 PPM 269561 19:17:58.5 -28:37:58 7.8 0.07 76 10199 19:17:58.6 -28:33:39 14.8 75 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 22.2 km
RECON observability=0.1 and success probability=1.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 10:09:07 | -12.9 | AT | Up | 8.8 | 203.8 | Really Low | 10:00:46 - 10:17:29 | 3629 |
| Tonasket | 10:09:07 | -13.1 | AT | Up | 9.0 | 203.8 | Really Low | 10:00:45 - 10:17:28 | 3622 |
| Okanogan | 10:09:07 | -13.5 | AT | Up | 9.4 | 203.7 | Really Low | 10:00:45 - 10:17:28 | 3615 |
| Brewster | 10:09:07 | -13.8 | AT | Up | 9.7 | 203.5 | Really Low | 10:00:45 - 10:17:28 | 3610 |
| Manson/Chelan | 10:09:08 | -14.1 | AT | Up | 10.0 | 203.2 | Really Low | 10:00:46 - 10:17:29 | 3610 |
| Entiat | 10:09:07 | -14.3 | AT | Up | 10.2 | 203.2 | Really Low | 10:00:46 - 10:17:29 | 3604 |
| Wenatchee | 10:09:07 | -14.5 | AT | Up | 10.4 | 203.1 | Really Low | 10:00:46 - 10:17:29 | 3598 |
| Ellensburg | 10:09:07 | -15.0 | AT | Up | 10.9 | 203.0 | Really Low | 10:00:46 - 10:17:29 | 3589 |
| Yakima | 10:09:07 | -15.3 | AT | Up | 11.3 | 203.0 | Really Low | 10:00:45 - 10:17:28 | 3576 |
| Toppenish/White Swan | 10:09:06 | -15.5 | AT | Up | 11.4 | 203.2 | Really Low | 10:00:45 - 10:17:28 | 3566 |
| Goldendale | 10:09:07 | -16.1 | AT | Up | 12.0 | 202.8 | Really Low | 10:00:45 - 10:17:28 | 3554 |
| The Dalles | 10:09:07 | -16.4 | AT | Up | 12.3 | 202.5 | Really Low | 10:00:46 - 10:17:29 | 3553 |
| Pasco | 10:09:02 | -15.1 | AT | Up | 11.2 | 204.2 | Really Low | 10:00:41 - 10:17:24 | 3540 |
| Maupin | 10:09:07 | -16.7 | AT | Up | 12.7 | 202.7 | Really Low | 10:00:45 - 10:17:28 | 3537 |
| George/Umatilla | 10:09:02 | -15.5 | AT | Up | 11.5 | 204.1 | Really Low | 10:00:41 - 10:17:24 | 3532 |
| PNWRO | 10:09:01 | -15.3 | AT | Up | 11.3 | 204.4 | Really Low | 10:00:39 - 10:17:22 | 3527 |
| Madras/Culver | 10:09:06 | -17.2 | AT | Up | 13.2 | 202.7 | Really Low | 10:00:44 - 10:17:27 | 3518 |
| Sisters | 10:09:07 | -17.7 | AT | Up | 13.6 | 202.3 | Really Low | 10:00:45 - 10:17:28 | 3513 |
| Redmond | 10:09:05 | -17.6 | AT | Up | 13.6 | 202.7 | Really Low | 10:00:44 - 10:17:27 | 3506 |
| Bend | 10:09:06 | -17.8 | AT | Up | 13.8 | 202.6 | Really Low | 10:00:44 - 10:17:27 | 3500 |
| Oregon Observatory | 10:09:06 | -18.0 | Dark | Up | 14.0 | 202.5 | Really Low | 10:00:44 - 10:17:27 | 3496 |
| La Pine/Gilchrist | 10:09:06 | -18.2 | Dark | Up | 14.2 | 202.4 | Really Low | 10:00:44 - 10:17:27 | 3489 |
| North Lake | 10:09:03 | -18.4 | Dark | Up | 14.4 | 203.0 | Really Low | 10:00:42 - 10:17:25 | 3462 |
| Chiloquin | 10:09:05 | -19.3 | Dark | Up | 15.3 | 202.2 | Really Low | 10:00:44 - 10:17:27 | 3452 |
| Klamath Falls | 10:09:05 | -19.6 | Dark | Up | 15.6 | 202.3 | Really Low | 10:00:43 - 10:17:26 | 3437 |
| Paisley | 10:09:01 | -18.7 | Dark | Up | 14.8 | 203.3 | Really Low | 10:00:40 - 10:17:23 | 3434 |
| Tulelake | 10:09:03 | -19.7 | Dark | Up | 15.8 | 202.6 | Really Low | 10:00:42 - 10:17:25 | 3421 |
| Lakeview | 10:08:59 | -19.1 | Dark | Up | 15.3 | 203.6 | Really Low | 10:00:38 - 10:17:21 | 3410 |
| Fall River/Burney | 10:09:02 | -20.5 | Dark | Up | 16.6 | 202.8 | Really Low | 10:00:40 - 10:17:23 | 3382 |
| Cedarville | 10:08:58 | -19.6 | Dark | Up | 15.8 | 203.8 | Really Low | 10:00:37 - 10:17:20 | 3380 |
| Susanville | 10:08:59 | -20.8 | Dark | Up | 17.0 | 203.5 | Really Low | 10:00:37 - 10:17:20 | 3341 |
| Greenville | 10:08:59 | -21.1 | Dark | Up | 17.3 | 203.3 | Really Low | 10:00:38 - 10:17:21 | 3335 |
| Gimple | 10:08:59 | -21.1 | Dark | Up | 17.3 | 203.4 | Really Low | 10:00:37 - 10:17:20 | 3333 |
| Quincy | 10:08:59 | -21.3 | Dark | Up | 17.5 | 203.3 | Really Low | 10:00:37 - 10:17:20 | 3326 |
| Portola | 10:08:57 | -21.2 | Dark | Up | 17.5 | 203.7 | Really Low | 10:00:35 - 10:17:18 | 3311 |
| Reno | 10:08:55 | -21.2 | Dark | Up | 17.5 | 204.3 | Really Low | 10:00:33 - 10:17:16 | 3287 |
| Carson City | 10:08:54 | -21.5 | Dark | Up | 17.8 | 204.4 | Really Low | 10:00:32 - 10:17:15 | 3270 |
| Gardnerville | 10:08:53 | -21.7 | Dark | Up | 18.0 | 204.4 | Really Low | 10:00:32 - 10:17:15 | 3258 |
| Yerington | 10:08:52 | -21.4 | Dark | Up | 17.8 | 204.9 | Really Low | 10:00:30 - 10:17:13 | 3249 |
| Hawthorne | 10:08:49 | -21.6 | Dark | Up | 18.1 | 205.4 | Really Low | 10:00:27 - 10:17:10 | 3216 |
| Lee Vining | 10:08:50 | -22.3 | Dark | Up | 18.7 | 205.1 | Really Low | 10:00:29 - 10:17:12 | 3199 |
| Tonopah | 10:08:44 | -21.4 | Dark | Up | 18.0 | 206.7 | Really Low | 10:00:23 - 10:17:06 | 3164 |
| Bishop | 10:08:47 | -22.5 | Dark | Up | 19.0 | 205.8 | Really Low | 10:00:25 - 10:17:08 | 3155 |
| Lone Pine | 10:08:45 | -23.0 | Dark | Up | 19.6 | 206.2 | Really Low | 10:00:23 - 10:17:06 | 3110 |
| Beatty | 10:08:41 | -22.1 | Dark | Up | 18.9 | 207.2 | Really Low | 10:00:19 - 10:17:02 | 3097 |
| CPSLO | 10:08:52 | -25.2 | Dark | Up | 21.7 | 204.2 | Low | 10:00:31 - 10:17:14 | 3096 |
| Indian Springs | 10:08:37 | -21.9 | Dark | Up | 18.8 | 208.2 | Really Low | 10:00:15 - 10:16:58 | 3056 |
| Henderson | 10:08:34 | -22.0 | Dark | Up | 19.0 | 208.9 | Really Low | 10:00:12 - 10:16:55 | 3012 |
| Wildwood | 10:08:43 | -25.3 | Dark | Up | 22.0 | 206.2 | Low | 10:00:22 - 10:17:05 | 2989 |
| Searchlight/Boulder City | 10:08:32 | -22.5 | Dark | Up | 19.4 | 209.0 | Really Low | 10:00:11 - 10:16:54 | 2981 |
| Niwot | 10:08:10 | -14.1 | AT | Up | 11.4 | 216.0 | Really Low | 09:59:49 - 10:16:32 | 2969 |
| Laughlin/Bullhead City | 10:08:31 | -22.6 | Dark | Up | 19.6 | 209.3 | Really Low | 10:00:09 - 10:16:52 | 2956 |
| Patrick | 10:08:29 | -22.0 | Dark | Up | 19.1 | 209.9 | Really Low | 10:00:07 - 10:16:50 | 2953 |
| Kingman/Dolan Springs | 10:08:29 | -22.3 | Dark | Up | 19.3 | 209.7 | Really Low | 10:00:08 - 10:16:51 | 2945 |
| Mohave Valley | 10:08:30 | -22.8 | Dark | Up | 19.8 | 209.4 | Really Low | 10:00:09 - 10:16:52 | 2941 |
| Idyllwild | 10:08:36 | -24.7 | Dark | Up | 21.7 | 207.8 | Low | 10:00:15 - 10:16:58 | 2928 |
| DCO | 10:08:26 | -21.9 | Dark | Up | 19.1 | 210.5 | Really Low | 10:00:05 - 10:16:48 | 2919 |
| Lake Havasu City | 10:08:29 | -23.0 | Dark | Up | 20.1 | 209.7 | Low | 10:00:08 - 10:16:51 | 2914 |
| Parker | 10:08:29 | -23.3 | Dark | Up | 20.3 | 209.7 | Low | 10:00:07 - 10:16:50 | 2893 |
| Blythe | 10:08:29 | -23.8 | Dark | Up | 20.9 | 209.6 | Low | 10:00:07 - 10:16:50 | 2871 |
| Calipatria | 10:08:31 | -24.7 | Dark | Up | 21.7 | 208.9 | Low | 10:00:10 - 10:16:53 | 2866 |
| Yuma | 10:08:28 | -24.6 | Dark | Up | 21.7 | 209.7 | Low | 10:00:06 - 10:16:49 | 2819 |
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 10199, (2018/07/05 10:11UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 36.99 112 38Zet Sgr 19:02:36.7 -29:52:49 2.7 3.35 79 PPM 269757 19:25:04.0 -29:18:35 5.6 1.94 74 PPM 269561 19:16:48.9 -28:40:01 7.8 0.07 76 10199 19:16:49.0 -28:35:42 14.8 76 Positions are for J2000
Event circumstances last updated at 2018/04/03 16:19:08 UT
Marc W. Buie, Southwest Research Institute