Event between (470593) 08LP17 and star GA0660:08086664 with event index number of 186910
Geocentric closest approach at 2019/04/16 10:00:25 UTC
J2000 position of star is 16:50:03.8 -22:27:52
Equinox of date position of star is 16:51:12.7 -22:29:46
Stellar brightness G=15.1,
use SENSEUP=128
Star is 89 degrees from the moon.
Moon is 87% illuminated.
TNO apparent brightness V=21.1
[RECON map]
TNO is 30.3 AU from the Sun
and 29.6 AU from the Earth.
The TNO is moving 12.9
km/sec on the sky relative to the star, or,
2.2 arcsec/hr.
The 1-sigma error in the time of the event is 262 seconds.
The 1-sigma cross-track error in the shadow position is
1815 km.
The sky-plane scale is
21473.8 km/arcsec.
The TNO has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 26.9 sec chord
Diameter=141.6 km assuming a 30% albedo -- 11.0 sec chord
Dynamical classification is CENTAURR
Star training set for 470593, (2019/04/16 10:00UT) Object RA Dec mag sep mel Antares 16:30:35.6 -26:28:23 0.9 6.15 86 23Tau Sco 16:37:05.2 -28:15:16 2.8 6.58 87 PPM 266088 16:54:33.7 -20:26:46 5.7 2.19 90 PPM 266012 16:50:44.2 -21:53:05 7.4 0.62 89 PPM 266026 16:51:32.1 -22:40:10 9.7 0.19 90 470593 16:51:13.3 -22:29:47 15.1 90 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
3.4 sigma about the mid-time.
The median site spacing is 11.0 km
RECON observability=0.7 and success probability=9.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 10:01:54 | -24.1 | Dark | Up | 16.1 | 163.5 | Really Low | 09:46:54 - 10:16:54 | 1192 |
| Summerland | 10:01:56 | -24.3 | Dark | Up | 16.0 | 163.2 | Really Low | 09:46:56 - 10:16:56 | 1188 |
| Penticton | 10:01:56 | -24.5 | Dark | Up | 16.4 | 163.3 | Really Low | 09:46:56 - 10:16:56 | 1178 |
| Okanagan Falls | 10:01:56 | -24.7 | Dark | Up | 16.5 | 163.3 | Really Low | 09:46:56 - 10:16:56 | 1171 |
| Oliver | 10:01:57 | -24.8 | Dark | Up | 16.7 | 163.3 | Really Low | 09:46:57 - 10:16:57 | 1166 |
| Anarchist Mountain Observatory | 10:01:56 | -24.9 | Dark | Up | 16.9 | 163.5 | Really Low | 09:46:56 - 10:16:56 | 1161 |
| Oroville | 10:01:56 | -25.0 | Dark | Up | 17.0 | 163.4 | Really Low | 09:46:56 - 10:16:56 | 1158 |
| Tonasket | 10:01:57 | -25.1 | Dark | Up | 17.2 | 163.4 | Really Low | 09:46:57 - 10:16:57 | 1149 |
| Okanogan | 10:01:58 | -25.5 | Dark | Up | 17.5 | 163.2 | Really Low | 09:46:58 - 10:16:58 | 1136 |
| Brewster | 10:02:00 | -25.8 | Dark | Up | 17.7 | 163.0 | Really Low | 09:47:00 - 10:17:00 | 1124 |
| Manson/Chelan | 10:02:02 | -26.1 | Dark | Up | 17.8 | 162.6 | Really Low | 09:47:02 - 10:17:02 | 1113 |
| Entiat | 10:02:03 | -26.3 | Dark | Up | 18.0 | 162.6 | Really Low | 09:47:03 - 10:17:03 | 1104 |
| Wenatchee | 10:02:04 | -26.5 | Dark | Up | 18.3 | 162.4 | Really Low | 09:47:04 - 10:17:04 | 1093 |
| Ellensburg | 10:02:06 | -27.0 | Dark | Up | 18.6 | 162.2 | Really Low | 09:47:06 - 10:17:06 | 1075 |
| Yakima | 10:02:07 | -27.3 | Dark | Up | 19.0 | 162.1 | Really Low | 09:47:07 - 10:17:07 | 1058 |
| Pasco | 10:02:00 | -27.0 | Dark | Up | 19.6 | 163.5 | Really Low | 09:47:00 - 10:17:00 | 1056 |
| Toppenish/White Swan | 10:02:07 | -27.4 | Dark | Up | 19.2 | 162.3 | Really Low | 09:47:07 - 10:17:07 | 1051 |
| PNWRO | 10:01:59 | -27.1 | Dark | Up | 19.9 | 163.6 | Really Low | 09:46:59 - 10:16:59 | 1047 |
| George/Umatilla | 10:02:02 | -27.4 | Dark | Up | 19.9 | 163.2 | Really Low | 09:47:02 - 10:17:02 | 1040 |
| Goldendale | 10:02:10 | -28.0 | Dark | Up | 19.7 | 161.8 | Really Low | 09:47:10 - 10:17:10 | 1024 |
| The Dalles | 10:02:13 | -28.4 | Dark | Up | 19.8 | 161.5 | Really Low | 09:47:13 - 10:17:13 | 1012 |
| Maupin | 10:02:13 | -28.7 | Dark | Up | 20.2 | 161.5 | Low | 09:47:13 - 10:17:13 | 994 |
| Madras/Culver | 10:02:14 | -29.1 | Dark | Up | 20.7 | 161.4 | Low | 09:47:14 - 10:17:14 | 970 |
| Redmond | 10:02:15 | -29.5 | Dark | Up | 21.1 | 161.3 | Low | 09:47:15 - 10:17:15 | 954 |
| Sisters | 10:02:17 | -29.6 | Dark | Up | 21.0 | 161.0 | Low | 09:47:17 - 10:17:17 | 951 |
| Bend | 10:02:16 | -29.7 | Dark | Up | 21.2 | 161.2 | Low | 09:47:16 - 10:17:16 | 943 |
| Oregon Observatory | 10:02:18 | -29.9 | Dark | Up | 21.4 | 161.0 | Low | 09:47:18 - 10:17:18 | 934 |
| La Pine/Gilchrist | 10:02:18 | -30.1 | Dark | Up | 21.6 | 160.9 | Low | 09:47:18 - 10:17:18 | 924 |
| North Lake | 10:02:16 | -30.2 | Dark | Up | 22.1 | 161.5 | Low | 09:47:16 - 10:17:16 | 909 |
| Paisley | 10:02:15 | -30.5 | Dark | Up | 22.7 | 161.7 | Low | 09:47:15 - 10:17:15 | 886 |
| Chiloquin | 10:02:23 | -31.1 | Dark | Up | 22.5 | 160.5 | Low | 09:47:23 - 10:17:23 | 868 |
| Lakeview | 10:02:14 | -30.8 | Dark | Up | 23.2 | 161.9 | Low | 09:47:14 - 10:17:14 | 863 |
| Klamath Falls | 10:02:23 | -31.4 | Dark | Up | 22.9 | 160.5 | Low | 09:47:23 - 10:17:23 | 852 |
| Tulelake | 10:02:21 | -31.5 | Dark | Up | 23.2 | 160.8 | Low | 09:47:21 - 10:17:21 | 842 |
| Niwot | 10:00:42 | -24.8 | Dark | Up | 27.4 | 176.6 | Low | 09:45:42 - 10:15:42 | 833 |
| Cedarville | 10:02:14 | -31.3 | Dark | Up | 23.9 | 161.9 | Low | 09:47:14 - 10:17:14 | 832 |
| SwRI | 10:00:43 | -24.9 | Dark | Up | 27.5 | 176.5 | Low | 09:45:43 - 10:15:43 | 827 |
| Fall River/Burney | 10:02:23 | -32.2 | Dark | Up | 24.1 | 160.7 | Low | 09:47:23 - 10:17:23 | 797 |
| Susanville | 10:02:19 | -32.4 | Dark | Up | 24.8 | 161.3 | Low | 09:47:19 - 10:17:19 | 772 |
| Gimple | 10:02:21 | -32.7 | Dark | Up | 25.1 | 161.1 | Low | 09:47:21 - 10:17:21 | 755 |
| Greenville | 10:02:22 | -32.8 | Dark | Up | 25.0 | 161.0 | Low | 09:47:22 - 10:17:22 | 755 |
| Quincy | 10:02:22 | -32.9 | Dark | Up | 25.2 | 161.0 | Low | 09:47:22 - 10:17:22 | 744 |
| Portola | 10:02:19 | -32.8 | Dark | Up | 25.5 | 161.4 | Low | 09:47:19 - 10:17:19 | 742 |
| Reno | 10:02:16 | -32.7 | Dark | Up | 25.9 | 162.0 | Low | 09:47:16 - 10:17:16 | 734 |
| Carson City | 10:02:16 | -33.0 | Dark | Up | 26.2 | 162.0 | Low | 09:47:16 - 10:17:16 | 715 |
| Yerington | 10:02:13 | -32.9 | Dark | Up | 26.5 | 162.6 | Low | 09:47:13 - 10:17:13 | 710 |
| Gardnerville | 10:02:16 | -33.2 | Dark | Up | 26.5 | 162.0 | Low | 09:47:16 - 10:17:16 | 702 |
| Hawthorne | 10:02:10 | -33.0 | Dark | Up | 27.1 | 163.0 | Low | 09:47:10 - 10:17:10 | 689 |
| Tonopah | 10:02:02 | -32.7 | Dark | Up | 27.9 | 164.3 | Low | 09:47:02 - 10:17:02 | 674 |
| Lee Vining | 10:02:14 | -33.7 | Dark | Up | 27.5 | 162.5 | Low | 09:47:14 - 10:17:14 | 654 |
| Bishop | 10:02:10 | -33.8 | Dark | Up | 28.3 | 163.1 | Low | 09:47:10 - 10:17:10 | 626 |
| Beatty | 10:02:00 | -33.3 | Dark | Up | 29.1 | 164.6 | Low | 09:47:00 - 10:17:00 | 613 |
| Indian Springs | 10:01:54 | -33.0 | Dark | Up | 29.6 | 165.7 | Low | 09:46:54 - 10:16:54 | 602 |
| Lone Pine | 10:02:09 | -34.2 | Dark | Up | 29.1 | 163.3 | Low | 09:47:09 - 10:17:09 | 586 |
| Henderson | 10:01:50 | -33.0 | Dark | Up | 30.3 | 166.3 | Up | 09:46:50 - 10:16:50 | 575 |
| Patrick | 10:01:43 | -32.9 | Dark | Up | 31.1 | 167.4 | Up | 09:46:43 - 10:16:43 | 545 |
| Searchlight/Boulder City | 10:01:50 | -33.4 | Dark | Up | 30.8 | 166.3 | Up | 09:46:50 - 10:16:50 | 542 |
| DCO | 10:01:39 | -32.7 | Dark | Up | 31.5 | 168.1 | Up | 09:46:39 - 10:16:39 | 531 |
| Kingman/Dolan Springs | 10:01:45 | -33.1 | Dark | Up | 31.3 | 167.2 | Up | 09:46:45 - 10:16:45 | 531 |
| Laughlin/Bullhead City | 10:01:48 | -33.4 | Dark | Up | 31.2 | 166.6 | Up | 09:46:48 - 10:16:48 | 526 |
| Mohave Valley | 10:01:48 | -33.6 | Dark | Up | 31.5 | 166.6 | Up | 09:46:48 - 10:16:48 | 510 |
| Lake Havasu City | 10:01:47 | -33.8 | Dark | Up | 31.9 | 166.8 | Up | 09:46:47 - 10:16:47 | 487 |
| CPSLO | 10:02:28 | -36.5 | Dark | Up | 29.7 | 160.5 | Low | 09:47:28 - 10:17:28 | 486 |
| Parker | 10:01:47 | -34.0 | Dark | Up | 32.2 | 166.8 | Up | 09:46:47 - 10:16:47 | 466 |
| Blythe | 10:01:50 | -34.6 | Dark | Up | 32.7 | 166.4 | Up | 09:46:50 - 10:16:50 | 432 |
| Wildwood | 10:02:17 | -36.4 | Dark | Up | 31.4 | 162.3 | Up | 09:47:17 - 10:17:17 | 431 |
| Idyllwild | 10:02:04 | -35.6 | Dark | Up | 32.1 | 164.2 | Up | 09:47:04 - 10:17:04 | 424 |
| Calipatria | 10:01:57 | -35.4 | Dark | Up | 33.0 | 165.3 | Up | 09:46:57 - 10:16:57 | 395 |
| Yuma | 10:01:51 | -35.2 | Dark | Up | 33.6 | 166.2 | Up | 09:46:51 - 10:16:51 | 373 |
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 470593, (2019/04/16 10:00UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 6.15 86 23Tau Sco 16:35:53.0 -28:12:58 2.8 6.58 87 PPM 266088 16:53:25.2 -20:24:57 5.7 2.19 90 PPM 266012 16:49:35.0 -21:51:09 7.4 0.62 89 PPM 266026 16:50:22.6 -22:38:15 9.7 0.19 90 470593 16:50:03.8 -22:27:52 15.1 89 Positions are for J2000
Event circumstances last updated at 2019/02/12 07:17:36 UT
Marc W. Buie, Southwest Research Institute