Event between (518151) 16FH13 and star GA1040:03491619 with event index number of 317077
Geocentric closest approach at 2019/04/23 05:38:47 UTC
J2000 position of star is 11:53:23.4 +14:48:44
Equinox of date position of star is 11:54:22.7 +14:42:19
Stellar brightness G=14.5,
use SENSEUP=32
Star is 88 degrees from the moon.
Moon is 83% illuminated.
TNO apparent brightness V=21.1
[RECON map]
TNO is 12.1 AU from the Sun
and 11.4 AU from the Earth.
The TNO is moving 24.1
km/sec on the sky relative to the star, or,
10.5 arcsec/hr.
The 1-sigma error in the time of the event is 34 seconds.
The 1-sigma cross-track error in the shadow position is
907 km.
The sky-plane scale is
8254.2 km/arcsec.
The TNO has an absolute magnitude Hv=10.1
Diameter=57.5 km assuming a 5% albedo -- 2.4 sec chord
Diameter=23.5 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
Star training set for 518151, (2019/04/23 05:39UT) Object RA Dec mag sep mel Regulus 10:09:23.9 +11:52:20 1.3 25.68 111 Denebola 11:50:02.6 +14:27:51 2.1 1.08 89 95 Leo 11:56:40.0 +15:32:22 5.5 1.00 88 PPM 128647 11:55:32.9 +14:02:37 7.8 0.72 87 PPM 128617 11:53:24.3 +14:21:03 9.4 0.43 88 PPM 128611 11:52:44.7 +14:43:47 10.2 0.40 88 518151 11:54:22.9 +14:42:18 14.5 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
5.0 sigma about the mid-time.
The median site spacing is 12.6 km
RECON observability=1.0 and success probability=33.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 05:40:22 | -20.9 | Dark | Down | 54.9 | 177.2 | Up | 05:37:01 - 05:43:44 | 136 |
| Summerland | 05:40:23 | -21.1 | Dark | Down | 55.2 | 176.7 | Up | 05:37:01 - 05:43:44 | 102 |
| Penticton | 05:40:22 | -21.2 | Dark | Down | 55.2 | 176.9 | Up | 05:37:01 - 05:43:44 | 102 |
| Niwot | 05:39:21 | -34.3 | Dark | Up | 62.5 | 206.5 | Up | 05:36:00 - 05:42:43 | 101 |
| SwRI | 05:39:21 | -34.4 | Dark | Up | 62.6 | 206.4 | Up | 05:36:00 - 05:42:43 | 88 |
| Okanagan Falls | 05:40:22 | -21.3 | Dark | Down | 55.4 | 176.8 | Up | 05:37:00 - 05:43:43 | 87 |
| Oliver | 05:40:21 | -21.5 | Dark | Down | 55.6 | 176.9 | Up | 05:37:00 - 05:43:43 | 75 |
| Anarchist Mountain Observatory | 05:40:21 | -21.7 | Dark | Down | 55.8 | 177.2 | Up | 05:36:59 - 05:43:42 | 71 |
| Oroville | 05:40:21 | -21.7 | Dark | Down | 55.8 | 177.0 | Up | 05:36:59 - 05:43:42 | 62 |
| Tonasket | 05:40:20 | -21.9 | Dark | Down | 56.1 | 177.0 | Up | 05:36:59 - 05:43:42 | 44 |
| Okanogan | 05:40:20 | -22.1 | Dark | Down | 56.4 | 176.7 | Up | 05:36:58 - 05:43:41 | 12 |
| Brewster | 05:40:20 | -22.2 | Dark | Down | 56.7 | 176.4 | Up | 05:36:58 - 05:43:41 | -17 |
| Manson/Chelan | 05:40:20 | -22.3 | Dark | Down | 56.9 | 175.7 | Up | 05:36:59 - 05:43:42 | -50 |
| Entiat | 05:40:20 | -22.4 | Dark | Down | 57.1 | 175.5 | Up | 05:36:58 - 05:43:41 | -70 |
| Wenatchee | 05:40:20 | -22.6 | Dark | Down | 57.3 | 175.3 | Up | 05:36:58 - 05:43:41 | -94 |
| Pasco | 05:40:14 | -24.0 | Dark | Down | 58.5 | 177.4 | Up | 05:36:52 - 05:43:35 | -130 |
| Ellensburg | 05:40:19 | -22.8 | Dark | Down | 57.7 | 174.9 | Up | 05:36:58 - 05:43:41 | -136 |
| PNWRO | 05:40:13 | -24.3 | Dark | Down | 58.8 | 177.8 | Up | 05:36:51 - 05:43:34 | -139 |
| George/Umatilla | 05:40:14 | -24.2 | Dark | Down | 58.9 | 176.9 | Up | 05:36:52 - 05:43:35 | -166 |
| Yakima | 05:40:18 | -23.1 | Dark | Down | 58.1 | 174.8 | Up | 05:36:57 - 05:43:40 | -168 |
| Toppenish/White Swan | 05:40:17 | -23.4 | Dark | Down | 58.4 | 175.1 | Up | 05:36:56 - 05:43:39 | -178 |
| Goldendale | 05:40:17 | -23.6 | Dark | Down | 58.9 | 174.2 | Up | 05:36:56 - 05:43:39 | -241 |
| The Dalles | 05:40:18 | -23.6 | Dark | Down | 59.1 | 173.5 | Up | 05:36:56 - 05:43:39 | -275 |
| Maupin | 05:40:17 | -24.0 | Dark | Down | 59.5 | 173.6 | Up | 05:36:55 - 05:43:38 | -304 |
| Madras/Culver | 05:40:16 | -24.4 | Dark | Down | 60.0 | 173.4 | Up | 05:36:54 - 05:43:37 | -350 |
| Redmond | 05:40:15 | -24.7 | Dark | Down | 60.4 | 173.2 | Up | 05:36:53 - 05:43:36 | -381 |
| Sisters | 05:40:16 | -24.5 | Dark | Down | 60.3 | 172.4 | Up | 05:36:55 - 05:43:38 | -397 |
| Bend | 05:40:15 | -24.8 | Dark | Down | 60.6 | 172.9 | Up | 05:36:53 - 05:43:36 | -405 |
| Oregon Observatory | 05:40:15 | -24.8 | Dark | Down | 60.8 | 172.6 | Up | 05:36:53 - 05:43:36 | -425 |
| La Pine/Gilchrist | 05:40:15 | -25.0 | Dark | Down | 61.0 | 172.4 | Up | 05:36:53 - 05:43:36 | -444 |
| North Lake | 05:40:12 | -25.6 | Dark | Down | 61.4 | 173.5 | Up | 05:36:50 - 05:43:33 | -451 |
| Paisley | 05:40:10 | -26.2 | Dark | Down | 62.0 | 174.1 | Up | 05:36:48 - 05:43:31 | -479 |
| Lakeview | 05:40:08 | -26.7 | Dark | Down | 62.5 | 174.4 | Up | 05:36:46 - 05:43:29 | -511 |
| Chiloquin | 05:40:13 | -25.7 | Dark | Down | 62.0 | 171.4 | Up | 05:36:51 - 05:43:34 | -552 |
| Cedarville | 05:40:06 | -27.2 | Dark | Down | 63.2 | 174.6 | Up | 05:36:44 - 05:43:27 | -557 |
| Klamath Falls | 05:40:12 | -26.0 | Dark | Down | 62.4 | 171.4 | Up | 05:36:51 - 05:43:34 | -577 |
| Tulelake | 05:40:11 | -26.3 | Dark | Down | 62.7 | 172.0 | Up | 05:36:49 - 05:43:32 | -584 |
| Fall River/Burney | 05:40:08 | -27.0 | Dark | Down | 63.6 | 171.9 | Up | 05:36:47 - 05:43:30 | -656 |
| Susanville | 05:40:06 | -27.9 | Dark | Down | 64.3 | 173.3 | Up | 05:36:44 - 05:43:27 | -672 |
| Tonopah | 05:39:49 | -31.3 | Dark | Down | 66.8 | 180.9 | Up | 05:36:28 - 05:43:11 | -692 |
| Gimple | 05:40:06 | -28.0 | Dark | Down | 64.5 | 172.8 | Up | 05:36:44 - 05:43:27 | -706 |
| Greenville | 05:40:06 | -27.9 | Dark | Down | 64.5 | 172.6 | Up | 05:36:44 - 05:43:27 | -710 |
| DCO | 05:39:30 | -35.6 | Dark | Down | 69.3 | 192.0 | Up | 05:36:08 - 05:42:51 | -715 |
| Yerington | 05:39:57 | -29.7 | Dark | Down | 65.8 | 176.4 | Up | 05:36:36 - 05:43:19 | -715 |
| Reno | 05:40:06 | -29.0 | Dark | Down | 65.2 | 175.0 | Up | 05:36:44 - 05:43:27 | -715 |
| Portola | 05:40:06 | -28.4 | Dark | Down | 64.9 | 173.6 | Up | 05:36:44 - 05:43:27 | -717 |
| Hawthorne | 05:39:55 | -30.3 | Dark | Down | 66.3 | 177.6 | Up | 05:36:33 - 05:43:16 | -727 |
| Quincy | 05:40:06 | -28.1 | Dark | Down | 64.7 | 172.6 | Up | 05:36:44 - 05:43:27 | -727 |
| Patrick | 05:39:33 | -35.0 | Dark | Down | 69.1 | 190.0 | Up | 05:36:11 - 05:42:54 | -729 |
| Indian Springs | 05:39:41 | -33.3 | Dark | Down | 68.2 | 184.9 | Up | 05:36:19 - 05:43:02 | -733 |
| Henderson | 05:39:38 | -34.0 | Dark | Down | 68.6 | 186.8 | Up | 05:36:16 - 05:42:59 | -739 |
| Carson City | 05:40:06 | -29.2 | Dark | Down | 65.6 | 175.0 | Up | 05:36:44 - 05:43:27 | -748 |
| Kingman/Dolan Springs | 05:39:33 | -35.1 | Dark | Down | 69.4 | 189.6 | Up | 05:36:11 - 05:42:54 | -758 |
| Beatty | 05:39:45 | -32.5 | Dark | Down | 67.9 | 182.1 | Up | 05:36:24 - 05:43:07 | -763 |
| Gardnerville | 05:40:06 | -29.5 | Dark | Down | 65.8 | 175.1 | Up | 05:36:44 - 05:43:27 | -769 |
| Searchlight/Boulder City | 05:39:36 | -34.5 | Dark | Down | 69.2 | 187.1 | Up | 05:36:14 - 05:42:57 | -783 |
| Laughlin/Bullhead City | 05:39:34 | -34.9 | Dark | Down | 69.5 | 188.2 | Up | 05:36:13 - 05:42:56 | -788 |
| Lee Vining | 05:39:55 | -30.5 | Dark | Down | 66.8 | 176.3 | Up | 05:36:33 - 05:43:16 | -799 |
| Mohave Valley | 05:39:33 | -35.1 | Dark | Down | 69.7 | 188.3 | Up | 05:36:12 - 05:42:55 | -810 |
| Bishop | 05:39:51 | -31.3 | Dark | Down | 67.4 | 178.0 | Up | 05:36:30 - 05:43:13 | -811 |
| Lake Havasu City | 05:39:32 | -35.6 | Dark | Down | 70.1 | 189.1 | Up | 05:36:10 - 05:42:53 | -829 |
| Parker | 05:39:31 | -35.9 | Dark | Down | 70.5 | 189.4 | Up | 05:36:09 - 05:42:52 | -857 |
| Lone Pine | 05:39:48 | -32.1 | Dark | Down | 68.2 | 178.8 | Up | 05:36:27 - 05:43:10 | -857 |
| Blythe | 05:39:30 | -36.1 | Dark | Down | 71.0 | 188.7 | Up | 05:36:09 - 05:42:52 | -917 |
| Yuma | 05:39:28 | -36.9 | Dark | Down | 71.9 | 189.0 | Up | 05:36:06 - 05:42:49 | -996 |
| Calipatria | 05:39:32 | -36.1 | Dark | Down | 71.6 | 186.1 | Up | 05:36:11 - 05:42:54 | -1010 |
| Idyllwild | 05:39:37 | -35.0 | Dark | Down | 71.1 | 182.5 | Up | 05:36:15 - 05:42:58 | -1025 |
| Wildwood | 05:39:44 | -33.7 | Dark | Down | 70.7 | 177.0 | Up | 05:36:22 - 05:43:05 | -1097 |
| CPSLO | 05:39:53 | -31.7 | Dark | Down | 69.3 | 171.6 | Up | 05:36:31 - 05:43:14 | -1104 |
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 518151, (2019/04/23 05:39UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 25.68 111 Denebola 11:49:02.9 +14:34:17 2.1 1.08 89 95 Leo 11:55:40.5 +15:38:48 5.5 1.00 88 PPM 128647 11:54:33.4 +14:09:04 7.8 0.72 87 PPM 128617 11:52:24.7 +14:27:30 9.4 0.43 88 PPM 128611 11:51:45.1 +14:50:13 10.2 0.40 88 518151 11:53:23.4 +14:48:44 14.5 88 Positions are for J2000
Event circumstances last updated at 2019/03/31 18:36:05 UT
Marc W. Buie, Southwest Research Institute