Event between (500884) 13JK65 and star UC4-351-087389 with event index number of 327424
Geocentric closest approach at 2019/04/27 09:33:18 UTC
J2000 position of star is 17:03:22.5 -19:55:17
Equinox of date position of star is 17:04:29.2 -19:56:48
Stellar brightness R=16.2,
use SENSEUP=128
Star is 55 degrees from the moon.
Moon is 46% illuminated.
TNO apparent brightness V=24.4
[RECON map]
TNO is 29.5 AU from the Sun
and 28.7 AU from the Earth.
The TNO is moving 16.6
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 585 seconds.
The 1-sigma cross-track error in the shadow position is
5106 km.
The sky-plane scale is
20834.9 km/arcsec.
The TNO has an absolute magnitude Hv=9.6
Diameter=72.4 km assuming a 5% albedo -- 4.4 sec chord
Diameter=29.6 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is 3:2E
Star training set for 500884, (2019/04/27 09:33UT) Object RA Dec mag sep mel Antares 16:30:35.7 -26:28:24 0.9 10.16 62 35Eta Oph 17:11:29.3 -15:44:51 2.6 4.52 55 PPM 266364 17:05:54.1 -20:31:13 6.5 0.66 55 PPM 266322 17:04:27.3 -20:10:00 8.0 0.22 55 PPM 266325 17:04:35.8 -20:06:40 8.9 0.16 55 500884 17:04:31.0 -19:56:50 16.2 55 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
1.5 sigma about the mid-time.
The median site spacing is 11.1 km
RECON observability=0.9 and success probability=4.5%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Summerland | 09:34:26 | -22.8 | Dark | Down | 18.6 | 163.2 | Really Low | 09:19:26 - 09:49:26 | 1048 |
| Kelowna | 09:34:26 | -22.7 | Dark | Down | 18.7 | 163.6 | Really Low | 09:19:26 - 09:49:26 | 1047 |
| Penticton | 09:34:26 | -23.0 | Dark | Down | 19.0 | 163.4 | Really Low | 09:19:26 - 09:49:26 | 1036 |
| Okanagan Falls | 09:34:26 | -23.2 | Dark | Down | 19.2 | 163.4 | Really Low | 09:19:26 - 09:49:26 | 1029 |
| Oliver | 09:34:26 | -23.4 | Dark | Down | 19.3 | 163.4 | Really Low | 09:19:26 - 09:49:26 | 1024 |
| Anarchist Mountain Observatory | 09:34:26 | -23.5 | Dark | Down | 19.5 | 163.5 | Really Low | 09:19:26 - 09:49:26 | 1016 |
| Oroville | 09:34:26 | -23.5 | Dark | Down | 19.6 | 163.5 | Really Low | 09:19:26 - 09:49:26 | 1014 |
| Tonasket | 09:34:26 | -23.8 | Dark | Down | 19.8 | 163.4 | Really Low | 09:19:26 - 09:49:26 | 1006 |
| Okanogan | 09:34:26 | -24.1 | Dark | Down | 20.1 | 163.3 | Low | 09:19:26 - 09:49:26 | 995 |
| Brewster | 09:34:43 | -24.4 | Dark | Down | 20.3 | 163.1 | Low | 09:19:43 - 09:49:43 | 946 |
| Manson/Chelan | 09:34:45 | -24.7 | Dark | Down | 20.5 | 162.7 | Low | 09:19:45 - 09:49:45 | 933 |
| Entiat | 09:34:46 | -24.9 | Dark | Down | 20.7 | 162.6 | Low | 09:19:46 - 09:49:46 | 923 |
| Pasco | 09:34:26 | -25.8 | Dark | Down | 22.2 | 163.5 | Low | 09:19:26 - 09:49:26 | 913 |
| Wenatchee | 09:34:47 | -25.2 | Dark | Down | 20.9 | 162.5 | Low | 09:19:47 - 09:49:47 | 911 |
| PNWRO | 09:34:26 | -26.0 | Dark | Down | 22.5 | 163.7 | Low | 09:19:26 - 09:49:26 | 900 |
| Ellensburg | 09:34:48 | -25.6 | Dark | Down | 21.2 | 162.2 | Low | 09:19:48 - 09:49:48 | 890 |
| Yakima | 09:34:49 | -26.0 | Dark | Down | 21.6 | 162.2 | Low | 09:19:49 - 09:49:49 | 871 |
| Toppenish/White Swan | 09:34:48 | -26.1 | Dark | Down | 21.9 | 162.3 | Low | 09:19:48 - 09:49:48 | 863 |
| George/Umatilla | 09:34:44 | -26.2 | Dark | Down | 22.5 | 163.3 | Low | 09:19:44 - 09:49:44 | 852 |
| Goldendale | 09:34:51 | -26.7 | Dark | Down | 22.3 | 161.8 | Low | 09:19:51 - 09:49:51 | 832 |
| The Dalles | 09:34:53 | -27.0 | Dark | Down | 22.4 | 161.5 | Low | 09:19:53 - 09:49:53 | 818 |
| Maupin | 09:34:53 | -27.4 | Dark | Down | 22.8 | 161.5 | Low | 09:19:53 - 09:49:53 | 799 |
| Madras/Culver | 09:34:54 | -27.9 | Dark | Down | 23.4 | 161.4 | Low | 09:19:54 - 09:49:54 | 771 |
| Redmond | 09:34:55 | -28.2 | Dark | Down | 23.7 | 161.3 | Low | 09:19:55 - 09:49:55 | 753 |
| Sisters | 09:34:56 | -28.3 | Dark | Down | 23.6 | 160.9 | Low | 09:19:56 - 09:49:56 | 750 |
| Bend | 09:34:55 | -28.5 | Dark | Down | 23.9 | 161.1 | Low | 09:19:55 - 09:49:55 | 741 |
| Oregon Observatory | 09:34:56 | -28.7 | Dark | Down | 24.0 | 161.0 | Low | 09:19:56 - 09:49:56 | 730 |
| La Pine/Gilchrist | 09:34:57 | -28.9 | Dark | Down | 24.2 | 160.9 | Low | 09:19:57 - 09:49:57 | 719 |
| North Lake | 09:34:55 | -29.1 | Dark | Down | 24.7 | 161.4 | Low | 09:19:55 - 09:49:55 | 703 |
| Paisley | 09:34:54 | -29.4 | Dark | Down | 25.3 | 161.7 | Low | 09:19:54 - 09:49:54 | 678 |
| Chiloquin | 09:35:00 | -30.0 | Dark | Down | 25.1 | 160.4 | Low | 09:20:00 - 09:50:00 | 657 |
| Lakeview | 09:34:54 | -29.8 | Dark | Down | 25.8 | 161.8 | Low | 09:19:54 - 09:49:54 | 653 |
| Niwot | 09:33:41 | -25.1 | Dark | Up | 29.9 | 177.3 | Low | 09:18:41 - 09:48:41 | 650 |
| Klamath Falls | 09:35:00 | -30.3 | Dark | Down | 25.5 | 160.4 | Low | 09:20:00 - 09:50:00 | 640 |
| Tulelake | 09:34:59 | -30.4 | Dark | Down | 25.8 | 160.7 | Low | 09:19:59 - 09:49:59 | 629 |
| Cedarville | 09:34:54 | -30.4 | Dark | Down | 26.5 | 161.9 | Low | 09:19:54 - 09:49:54 | 620 |
| Fall River/Burney | 09:35:00 | -31.2 | Dark | Down | 26.7 | 160.6 | Low | 09:20:00 - 09:50:00 | 579 |
| Susanville | 09:34:57 | -31.5 | Dark | Down | 27.5 | 161.2 | Low | 09:19:57 - 09:49:57 | 552 |
| Gimple | 09:34:59 | -31.8 | Dark | Down | 27.7 | 161.0 | Low | 09:19:59 - 09:49:59 | 534 |
| Greenville | 09:34:59 | -31.9 | Dark | Down | 27.6 | 160.9 | Low | 09:19:59 - 09:49:59 | 533 |
| Tonopah | 09:34:26 | -32.3 | Dark | Up | 30.5 | 164.3 | Up | 09:19:26 - 09:49:26 | 531 |
| Quincy | 09:34:59 | -32.0 | Dark | Down | 27.8 | 160.9 | Low | 09:19:59 - 09:49:59 | 522 |
| Portola | 09:34:57 | -32.0 | Dark | Down | 28.1 | 161.3 | Low | 09:19:57 - 09:49:57 | 520 |
| Reno | 09:34:54 | -32.0 | Dark | Down | 28.5 | 161.9 | Low | 09:19:54 - 09:49:54 | 511 |
| Carson City | 09:34:55 | -32.3 | Dark | Down | 28.8 | 161.9 | Low | 09:19:55 - 09:49:55 | 491 |
| Yerington | 09:34:52 | -32.2 | Dark | Down | 29.2 | 162.5 | Low | 09:19:52 - 09:49:52 | 486 |
| Gardnerville | 09:34:55 | -32.5 | Dark | Down | 29.1 | 161.9 | Low | 09:19:55 - 09:49:55 | 477 |
| Hawthorne | 09:34:50 | -32.4 | Dark | Down | 29.7 | 163.0 | Low | 09:19:50 - 09:49:50 | 464 |
| Beatty | 09:34:26 | -33.1 | Dark | Up | 31.7 | 164.6 | Up | 09:19:26 - 09:49:26 | 463 |
| Lee Vining | 09:34:52 | -33.1 | Dark | Down | 30.2 | 162.4 | Up | 09:19:52 - 09:49:52 | 425 |
| Indian Springs | 09:34:26 | -32.9 | Dark | Up | 32.2 | 165.7 | Up | 09:19:26 - 09:49:26 | 411 |
| Bishop | 09:34:50 | -33.3 | Dark | Up | 30.9 | 163.0 | Up | 09:19:50 - 09:49:50 | 396 |
| Henderson | 09:34:26 | -33.0 | Dark | Up | 32.9 | 166.4 | Up | 09:19:26 - 09:49:26 | 366 |
| Lone Pine | 09:34:48 | -33.9 | Dark | Up | 31.7 | 163.3 | Up | 09:19:48 - 09:49:48 | 353 |
| Searchlight/Boulder City | 09:34:26 | -33.5 | Dark | Up | 33.4 | 166.4 | Up | 09:19:26 - 09:49:26 | 333 |
| Patrick | 09:34:26 | -33.0 | Dark | Up | 33.7 | 167.5 | Up | 09:19:26 - 09:49:26 | 318 |
| Laughlin/Bullhead City | 09:34:26 | -33.6 | Dark | Up | 33.8 | 166.7 | Up | 09:19:26 - 09:49:26 | 309 |
| Kingman/Dolan Springs | 09:34:26 | -33.3 | Dark | Up | 33.9 | 167.3 | Up | 09:19:26 - 09:49:26 | 304 |
| DCO | 09:34:24 | -32.9 | Dark | Up | 34.1 | 168.3 | Up | 09:19:24 - 09:49:24 | 303 |
| Mohave Valley | 09:34:26 | -33.8 | Dark | Up | 34.1 | 166.7 | Up | 09:19:26 - 09:49:26 | 293 |
| Lake Havasu City | 09:34:26 | -34.0 | Dark | Up | 34.5 | 166.9 | Up | 09:19:26 - 09:49:26 | 265 |
| Calipatria | 09:34:26 | -35.7 | Dark | Up | 35.6 | 165.3 | Up | 09:19:26 - 09:49:26 | 251 |
| Parker | 09:34:26 | -34.3 | Dark | Up | 34.9 | 166.9 | Up | 09:19:26 - 09:49:26 | 244 |
| CPSLO | 09:35:03 | -36.0 | Dark | Down | 32.3 | 160.3 | Up | 09:20:03 - 09:50:03 | 242 |
| Blythe | 09:34:26 | -34.8 | Dark | Up | 35.3 | 166.5 | Up | 09:19:26 - 09:49:26 | 222 |
| Wildwood | 09:34:54 | -36.2 | Dark | Up | 34.0 | 162.2 | Up | 09:19:54 - 09:49:54 | 186 |
| Idyllwild | 09:34:44 | -35.7 | Dark | Up | 34.8 | 164.2 | Up | 09:19:44 - 09:49:44 | 181 |
| Yuma | 09:34:26 | -35.6 | Dark | Up | 36.2 | 166.2 | Up | 09:19:26 - 09:49:26 | 180 |
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 500884, (2019/04/27 09:33UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 10.16 62 35Eta Oph 17:10:22.7 -15:43:29 2.6 4.52 55 PPM 266364 17:04:45.3 -20:29:41 6.5 0.66 55 PPM 266322 17:03:18.7 -20:08:26 8.0 0.22 55 PPM 266325 17:03:27.2 -20:05:06 8.9 0.16 55 500884 17:03:22.5 -19:55:17 16.2 55 Positions are for J2000
Event circumstances last updated at 2018/10/24 21:19:07 UT
Marc W. Buie, Southwest Research Institute