Event between 12HL85 and star GA0740:05279927 with event index number of 249223
Geocentric closest approach at 2019/06/05 08:05:26 UTC
J2000 position of star is 14:49:30.4 -15:32:35
Equinox of date position of star is 14:50:34.0 -15:37:18
Stellar brightness G=16.1,
use SENSEUP=128
Star is 125 degrees from the moon.
Moon is 5% illuminated.
TNO apparent brightness V=22.7
[RECON map]
TNO is 41.1 AU from the Sun
and 40.2 AU from the Earth.
The TNO is moving 21.3
km/sec on the sky relative to the star, or,
2.6 arcsec/hr.
The 1-sigma error in the time of the event is 124 seconds.
The 1-sigma cross-track error in the shadow position is
2111 km.
The sky-plane scale is
29135.3 km/arcsec.
The TNO has an absolute magnitude Hv=6.5
Diameter=296.5 km assuming a 5% albedo -- 13.9 sec chord
Diameter=121.0 km assuming a 30% albedo -- 5.7 sec chord
Dynamical classification is SCATEXTD
Star training set for 12HL85, (2019/06/05 08:05UT) Object RA Dec mag sep mel Spica 13:26:13.2 -11:15:44 1.0 20.96 105 27Bet Lib 15:18:03.3 -09:27:12 2.6 9.11 130 8Alp1Lib 14:51:45.9 -16:04:37 5.1 0.54 126 PPM 229351 14:51:11.0 -15:36:20 7.2 0.15 126 12HL85 14:50:35.0 -15:37:22 16.1 126 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 12.5 km
RECON observability=0.8 and success probability=1.1%
Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
Kelowna | 08:04:44 | -17.6 | AT | Down | 18.4 | 213.5 | Really Low | 07:53:53 - 08:15:35 | 6933 |
Summerland | 08:04:45 | -17.6 | AT | Down | 18.6 | 213.1 | Really Low | 07:53:54 - 08:15:36 | 6930 |
Penticton | 08:04:43 | -17.9 | AT | Down | 18.8 | 213.4 | Really Low | 07:53:52 - 08:15:34 | 6919 |
Okanagan Falls | 08:04:43 | -18.1 | Dark | Down | 19.0 | 213.4 | Really Low | 07:53:52 - 08:15:34 | 6911 |
Oliver | 08:04:43 | -18.3 | Dark | Down | 19.1 | 213.4 | Really Low | 07:53:52 - 08:15:34 | 6905 |
Anarchist Mountain Observatory | 08:04:42 | -18.4 | Dark | Down | 19.2 | 213.6 | Really Low | 07:53:51 - 08:15:33 | 6899 |
Oroville | 08:04:42 | -18.5 | Dark | Down | 19.3 | 213.6 | Really Low | 07:53:51 - 08:15:33 | 6896 |
Tonasket | 08:04:41 | -18.7 | Dark | Down | 19.5 | 213.6 | Really Low | 07:53:50 - 08:15:32 | 6886 |
Okanogan | 08:04:40 | -19.1 | Dark | Down | 19.8 | 213.6 | Really Low | 07:53:49 - 08:15:31 | 6872 |
Brewster | 08:04:40 | -19.4 | Dark | Down | 20.1 | 213.4 | Low | 07:53:49 - 08:15:31 | 6860 |
Manson/Chelan | 08:04:41 | -19.6 | Dark | Down | 20.4 | 213.1 | Low | 07:53:50 - 08:15:32 | 6850 |
Entiat | 08:04:41 | -19.8 | Dark | Down | 20.6 | 213.1 | Low | 07:53:50 - 08:15:32 | 6841 |
Wenatchee | 08:04:41 | -20.1 | Dark | Down | 20.9 | 213.0 | Low | 07:53:50 - 08:15:32 | 6829 |
Ellensburg | 08:04:41 | -20.5 | Dark | Down | 21.3 | 212.9 | Low | 07:53:50 - 08:15:32 | 6811 |
Yakima | 08:04:40 | -20.9 | Dark | Down | 21.6 | 213.0 | Low | 07:53:49 - 08:15:31 | 6793 |
Toppenish/White Swan | 08:04:39 | -21.1 | Dark | Down | 21.8 | 213.2 | Low | 07:53:48 - 08:15:30 | 6784 |
Pasco | 08:04:34 | -21.2 | Dark | Down | 21.4 | 214.4 | Low | 07:53:43 - 08:15:25 | 6783 |
PNWRO | 08:04:32 | -21.4 | Dark | Down | 21.5 | 214.7 | Low | 07:53:41 - 08:15:23 | 6773 |
George/Umatilla | 08:04:34 | -21.5 | Dark | Down | 21.7 | 214.3 | Low | 07:53:43 - 08:15:25 | 6767 |
Goldendale | 08:04:39 | -21.7 | Dark | Down | 22.4 | 212.9 | Low | 07:53:48 - 08:15:30 | 6757 |
The Dalles | 08:04:39 | -21.9 | Dark | Down | 22.7 | 212.6 | Low | 07:53:48 - 08:15:30 | 6745 |
Maupin | 08:04:37 | -22.3 | Dark | Down | 23.0 | 212.8 | Low | 07:53:46 - 08:15:28 | 6726 |
Madras/Culver | 08:04:36 | -22.8 | Dark | Down | 23.5 | 212.9 | Low | 07:53:45 - 08:15:27 | 6700 |
Redmond | 08:04:35 | -23.2 | Dark | Down | 23.8 | 212.9 | Low | 07:53:44 - 08:15:26 | 6683 |
Sisters | 08:04:36 | -23.2 | Dark | Down | 24.0 | 212.5 | Low | 07:53:45 - 08:15:27 | 6682 |
Bend | 08:04:35 | -23.4 | Dark | Down | 24.1 | 212.8 | Low | 07:53:44 - 08:15:26 | 6672 |
Oregon Observatory | 08:04:35 | -23.6 | Dark | Down | 24.3 | 212.7 | Low | 07:53:44 - 08:15:26 | 6663 |
La Pine/Gilchrist | 08:04:35 | -23.8 | Dark | Down | 24.4 | 212.7 | Low | 07:53:44 - 08:15:26 | 6652 |
North Lake | 08:04:32 | -24.2 | Dark | Down | 24.6 | 213.4 | Low | 07:53:41 - 08:15:23 | 6634 |
Paisley | 08:04:29 | -24.8 | Dark | Down | 24.9 | 213.9 | Low | 07:53:38 - 08:15:20 | 6607 |
Chiloquin | 08:04:35 | -24.9 | Dark | Down | 25.5 | 212.7 | Low | 07:53:44 - 08:15:26 | 6595 |
Lakeview | 08:04:28 | -25.3 | Dark | Down | 25.2 | 214.2 | Low | 07:53:37 - 08:15:19 | 6582 |
Klamath Falls | 08:04:32 | -25.3 | Dark | Down | 25.8 | 212.8 | Low | 07:53:41 - 08:15:23 | 6577 |
Tulelake | 08:04:30 | -25.5 | Dark | Down | 25.9 | 213.2 | Low | 07:53:39 - 08:15:21 | 6565 |
Cedarville | 08:04:25 | -25.9 | Dark | Down | 25.7 | 214.5 | Low | 07:53:34 - 08:15:16 | 6548 |
Fall River/Burney | 08:04:30 | -26.4 | Dark | Down | 26.6 | 213.5 | Low | 07:53:39 - 08:15:21 | 6517 |
Susanville | 08:04:24 | -27.1 | Dark | Down | 26.8 | 214.4 | Low | 07:53:33 - 08:15:15 | 6486 |
Niwot | 08:03:36 | -25.6 | Dark | Down | 19.4 | 228.1 | Really Low | 07:52:45 - 08:14:27 | 6483 |
SwRI | 08:03:35 | -25.7 | Dark | Down | 19.5 | 228.1 | Really Low | 07:52:44 - 08:14:26 | 6477 |
Gimple | 08:04:24 | -27.3 | Dark | Down | 27.2 | 214.3 | Low | 07:53:33 - 08:15:15 | 6470 |
Greenville | 08:04:24 | -27.3 | Dark | Down | 27.2 | 214.2 | Low | 07:53:33 - 08:15:15 | 6470 |
Quincy | 08:04:24 | -27.5 | Dark | Down | 27.4 | 214.2 | Low | 07:53:33 - 08:15:15 | 6459 |
Portola | 08:04:23 | -27.7 | Dark | Down | 27.3 | 214.7 | Low | 07:53:32 - 08:15:14 | 6454 |
Reno | 08:04:19 | -27.9 | Dark | Down | 27.2 | 215.4 | Low | 07:53:28 - 08:15:10 | 6442 |
Carson City | 08:04:18 | -28.3 | Dark | Down | 27.5 | 215.5 | Low | 07:53:27 - 08:15:09 | 6422 |
Yerington | 08:04:16 | -28.4 | Dark | Down | 27.4 | 216.2 | Low | 07:53:25 - 08:15:07 | 6413 |
Gardnerville | 08:04:18 | -28.5 | Dark | Down | 27.7 | 215.7 | Low | 07:53:27 - 08:15:09 | 6408 |
Hawthorne | 08:04:14 | -28.9 | Dark | Down | 27.5 | 216.8 | Low | 07:53:23 - 08:15:05 | 6389 |
Tonopah | 08:04:07 | -29.3 | Dark | Down | 27.2 | 218.3 | Low | 07:53:16 - 08:14:58 | 6366 |
Lee Vining | 08:04:14 | -29.5 | Dark | Down | 28.2 | 216.6 | Low | 07:53:23 - 08:15:05 | 6354 |
Bishop | 08:04:11 | -30.0 | Dark | Down | 28.3 | 217.4 | Low | 07:53:20 - 08:15:02 | 6321 |
Beatty | 08:04:03 | -30.4 | Dark | Down | 27.9 | 219.1 | Low | 07:53:12 - 08:14:54 | 6299 |
Indian Springs | 08:03:58 | -30.7 | Dark | Down | 27.6 | 220.2 | Low | 07:53:07 - 08:14:49 | 6282 |
Lone Pine | 08:04:07 | -30.8 | Dark | Down | 28.7 | 218.0 | Low | 07:53:16 - 08:14:58 | 6276 |
Henderson | 08:03:55 | -31.1 | Dark | Down | 27.6 | 221.0 | Low | 07:53:04 - 08:14:46 | 6251 |
Searchlight/Boulder City | 08:03:53 | -31.7 | Dark | Down | 28.0 | 221.2 | Low | 07:53:02 - 08:14:44 | 6215 |
Patrick | 08:03:49 | -31.6 | Dark | Down | 27.5 | 222.2 | Low | 07:52:58 - 08:14:40 | 6213 |
Kingman/Dolan Springs | 08:03:49 | -31.9 | Dark | Down | 27.8 | 222.1 | Low | 07:52:58 - 08:14:40 | 6199 |
Laughlin/Bullhead City | 08:03:51 | -32.0 | Dark | Down | 28.1 | 221.6 | Low | 07:53:00 - 08:14:42 | 6197 |
DCO | 08:03:46 | -31.8 | Dark | Down | 27.4 | 222.9 | Low | 07:52:55 - 08:14:37 | 6195 |
CPSLO | 08:04:13 | -32.2 | Dark | Down | 31.0 | 216.0 | Up | 07:53:22 - 08:15:04 | 6185 |
Mohave Valley | 08:03:50 | -32.2 | Dark | Down | 28.3 | 221.7 | Low | 07:52:59 - 08:14:41 | 6180 |
Lake Havasu City | 08:03:49 | -32.6 | Dark | Down | 28.4 | 222.1 | Low | 07:52:58 - 08:14:40 | 6155 |
Parker | 08:03:47 | -32.9 | Dark | Down | 28.7 | 222.2 | Low | 07:52:56 - 08:14:38 | 6132 |
Wildwood | 08:04:02 | -33.3 | Dark | Down | 31.0 | 218.3 | Up | 07:53:11 - 08:14:53 | 6116 |
Idyllwild | 08:03:55 | -33.6 | Dark | Down | 30.3 | 220.2 | Up | 07:53:04 - 08:14:46 | 6100 |
Blythe | 08:03:48 | -33.5 | Dark | Down | 29.2 | 222.2 | Low | 07:52:57 - 08:14:39 | 6097 |
Calipatria | 08:03:49 | -34.1 | Dark | Down | 30.1 | 221.5 | Up | 07:52:58 - 08:14:40 | 6063 |
Yuma | 08:03:45 | -34.4 | Dark | Down | 30.0 | 222.5 | Low | 07:52:54 - 08:14:36 | 6036 |
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 12HL85, (2019/06/05 08:05UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 20.96 105 27Bet Lib 15:17:00.3 -09:22:59 2.6 9.11 130 8Alp1Lib 14:50:41.1 -15:59:51 5.1 0.54 126 PPM 229351 14:50:06.4 -15:31:34 7.2 0.15 126 12HL85 14:49:30.4 -15:32:35 16.1 125 Positions are for J2000
Event circumstances last updated at 2019/02/12 08:22:56 UT
Marc W. Buie, Southwest Research Institute