Event between (469987) 06HJ123 and star GA0720:05976964 with event index number of 208650
Geocentric closest approach at 2019/08/14 05:43:19 UTC
J2000 position of star is 16:14:14.8 -16:01:59
Equinox of date position of star is 16:15:21.3 -16:04:52
Stellar brightness G=16.5,
use SENSEUP=128
Star is 63 degrees from the moon.
Moon is 98% illuminated.
TNO apparent brightness V=21.3
[RECON map]
TNO is 33.7 AU from the Sun
and 33.5 AU from the Earth.
The TNO is moving 2.1
km/sec on the sky relative to the star, or,
0.3 arcsec/hr.
The 1-sigma error in the time of the event is 580 seconds.
The 1-sigma cross-track error in the shadow position is
3207 km.
The sky-plane scale is
24276.1 km/arcsec.
The TNO has an absolute magnitude Hv=5.9
Diameter=398.1 km assuming a 5% albedo -- 189.7 sec chord
Diameter=162.5 km assuming a 30% albedo -- 77.5 sec chord
Dynamical classification is 3:2E
Star training set for 469987, (2019/08/14 05:43UT) Object RA Dec mag sep mel Antares 16:30:36.8 -26:28:26 0.9 10.98 57 8Bet1Sco 16:06:34.8 -19:51:27 2.6 4.32 64 PPM 231511 16:20:07.0 -14:55:09 5.8 1.63 62 PPM 231439 16:17:00.7 -15:56:09 7.9 0.42 62 PPM 231375 16:14:32.4 -16:08:40 9.2 0.21 63 PPM 231406 16:15:27.1 -16:16:32 10.1 0.20 63 469987 16:15:21.9 -16:04:53 16.5 63 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
1.6 sigma about the mid-time.
The median site spacing is 22.0 km
RECON observability=0.7 and success probability=2.5%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 05:08:08 | -15.1 | AT | Up | 16.7 | 216.6 | Really Low | 04:53:08 - 05:23:08 | 8834 |
| Summerland | 05:08:13 | -15.2 | AT | Up | 17.0 | 216.4 | Really Low | 04:53:13 - 05:23:13 | 8825 |
| Penticton | 05:08:09 | -15.3 | AT | Up | 17.0 | 216.5 | Really Low | 04:53:09 - 05:23:09 | 8816 |
| Okanagan Falls | 05:08:13 | -15.5 | AT | Up | 17.2 | 216.5 | Really Low | 04:53:13 - 05:23:13 | 8804 |
| Oliver | 05:08:09 | -15.6 | AT | Up | 17.3 | 216.5 | Really Low | 04:53:09 - 05:23:09 | 8792 |
| Anarchist Mountain Observatory | 05:08:04 | -15.8 | AT | Up | 17.4 | 216.7 | Really Low | 04:53:04 - 05:23:04 | 8772 |
| Oroville | 05:08:03 | -15.8 | AT | Up | 17.5 | 216.7 | Really Low | 04:53:03 - 05:23:03 | 8770 |
| Tonasket | 05:08:06 | -16.0 | AT | Up | 17.7 | 216.7 | Really Low | 04:53:06 - 05:23:06 | 8754 |
| Okanogan | 05:08:02 | -16.1 | AT | Up | 18.0 | 216.6 | Really Low | 04:53:02 - 05:23:02 | 8736 |
| Manson/Chelan | 05:08:15 | -16.2 | AT | Up | 18.6 | 216.3 | Really Low | 04:53:15 - 05:23:15 | 8726 |
| Brewster | 05:08:09 | -16.3 | AT | Up | 18.3 | 216.5 | Really Low | 04:53:09 - 05:23:09 | 8726 |
| Entiat | 05:08:16 | -16.4 | AT | Up | 18.8 | 216.2 | Really Low | 04:53:16 - 05:23:16 | 8714 |
| Wenatchee | 05:08:15 | -16.5 | AT | Up | 19.0 | 216.2 | Really Low | 04:53:15 - 05:23:15 | 8700 |
| Ellensburg | 05:08:24 | -16.7 | AT | Up | 19.4 | 216.1 | Really Low | 04:53:24 - 05:23:24 | 8680 |
| Yakima | 05:08:27 | -17.0 | AT | Up | 19.8 | 216.2 | Really Low | 04:53:27 - 05:23:27 | 8652 |
| Toppenish/White Swan | 05:08:27 | -17.2 | AT | Up | 19.9 | 216.4 | Really Low | 04:53:27 - 05:23:27 | 8630 |
| Goldendale | 05:08:31 | -17.4 | AT | Up | 20.5 | 216.1 | Low | 04:53:31 - 05:23:31 | 8608 |
| The Dalles | 05:08:52 | -17.4 | AT | Up | 20.8 | 215.9 | Low | 04:53:52 - 05:23:52 | 8608 |
| Maupin | 05:08:24 | -17.7 | AT | Up | 21.1 | 216.0 | Low | 04:53:24 - 05:23:24 | 8573 |
| Pasco | 05:07:45 | -17.8 | AT | Up | 19.5 | 217.4 | Really Low | 04:52:45 - 05:22:45 | 8567 |
| George/Umatilla | 05:07:56 | -18.0 | Dark | Up | 19.9 | 217.3 | Really Low | 04:52:56 - 05:22:56 | 8552 |
| PNWRO | 05:07:38 | -18.1 | Dark | Up | 19.6 | 217.7 | Really Low | 04:52:38 - 05:22:38 | 8540 |
| Madras/Culver | 05:08:51 | -18.1 | Dark | Up | 21.5 | 216.2 | Low | 04:53:51 - 05:23:51 | 8535 |
| Sisters | 05:08:38 | -18.1 | Dark | Up | 22.0 | 215.8 | Low | 04:53:38 - 05:23:38 | 8531 |
| Redmond | 05:08:41 | -18.3 | Dark | Up | 21.9 | 216.2 | Low | 04:53:41 - 05:23:41 | 8511 |
| Bend | 05:08:51 | -18.4 | Dark | Up | 22.1 | 216.2 | Low | 04:53:51 - 05:23:51 | 8502 |
| Oregon Observatory | 05:08:37 | -18.4 | Dark | Up | 22.3 | 216.0 | Low | 04:53:37 - 05:23:37 | 8495 |
| La Pine/Gilchrist | 05:08:38 | -18.6 | Dark | Up | 22.5 | 216.0 | Low | 04:53:38 - 05:23:38 | 8483 |
| North Lake | 05:08:44 | -19.2 | Dark | Up | 22.6 | 216.7 | Low | 04:53:44 - 05:23:44 | 8424 |
| Chiloquin | 05:08:57 | -19.2 | Dark | Up | 23.5 | 216.0 | Low | 04:53:57 - 05:23:57 | 8417 |
| Klamath Falls | 05:08:52 | -19.4 | Dark | Up | 23.8 | 216.2 | Low | 04:53:52 - 05:23:52 | 8388 |
| Paisley | 05:08:27 | -19.7 | Dark | Up | 22.9 | 217.1 | Low | 04:53:27 - 05:23:27 | 8367 |
| Tulelake | 05:08:45 | -19.8 | Dark | Up | 23.9 | 216.5 | Low | 04:53:45 - 05:23:45 | 8354 |
| Lakeview | 05:08:20 | -20.2 | Dark | Up | 23.2 | 217.4 | Low | 04:53:20 - 05:23:20 | 8320 |
| Fall River/Burney | 05:08:52 | -20.4 | Dark | Up | 24.5 | 216.9 | Low | 04:53:52 - 05:23:52 | 8282 |
| Cedarville | 05:08:23 | -20.7 | Dark | Up | 23.6 | 217.8 | Low | 04:53:23 - 05:23:23 | 8263 |
| Susanville | 05:08:23 | -21.2 | Dark | Up | 24.8 | 217.6 | Low | 04:53:23 - 05:23:23 | 8200 |
| Greenville | 05:08:31 | -21.3 | Dark | Up | 25.1 | 217.5 | Low | 04:53:31 - 05:23:31 | 8192 |
| Gimple | 05:08:41 | -21.3 | Dark | Up | 25.0 | 217.6 | Low | 04:53:41 - 05:23:41 | 8188 |
| Quincy | 05:08:37 | -21.4 | Dark | Up | 25.2 | 217.5 | Low | 04:53:37 - 05:23:37 | 8176 |
| Portola | 05:08:30 | -21.7 | Dark | Up | 25.1 | 218.0 | Low | 04:53:30 - 05:23:30 | 8144 |
| Reno | 05:08:16 | -22.3 | Dark | Up | 25.1 | 218.6 | Low | 04:53:16 - 05:23:16 | 8094 |
| Carson City | 05:08:13 | -22.5 | Dark | Up | 25.3 | 218.7 | Low | 04:53:13 - 05:23:13 | 8065 |
| Gardnerville | 05:08:16 | -22.7 | Dark | Up | 25.5 | 218.9 | Low | 04:53:16 - 05:23:16 | 8043 |
| Yerington | 05:07:55 | -23.0 | Dark | Up | 25.2 | 219.3 | Low | 04:52:55 - 05:22:55 | 8019 |
| Hawthorne | 05:07:48 | -23.6 | Dark | Up | 25.3 | 219.9 | Low | 04:52:48 - 05:22:48 | 7958 |
| Lee Vining | 05:07:55 | -23.7 | Dark | Up | 26.0 | 219.6 | Low | 04:52:55 - 05:22:55 | 7936 |
| Tonopah | 05:07:14 | -24.6 | Dark | Up | 25.0 | 221.2 | Low | 04:52:14 - 05:22:14 | 7854 |
| Bishop | 05:07:48 | -24.5 | Dark | Up | 26.1 | 220.5 | Low | 04:52:48 - 05:22:48 | 7853 |
| CPSLO | 05:08:51 | -24.7 | Dark | Up | 28.7 | 219.3 | Low | 04:53:51 - 05:23:51 | 7796 |
| Lone Pine | 05:07:40 | -25.2 | Dark | Up | 26.5 | 221.0 | Low | 04:52:40 - 05:22:40 | 7776 |
| Beatty | 05:06:59 | -25.6 | Dark | Up | 25.7 | 221.9 | Low | 04:51:59 - 05:21:59 | 7738 |
| Indian Springs | 05:06:45 | -26.5 | Dark | Up | 25.4 | 222.9 | Low | 04:51:45 - 05:21:45 | 7659 |
| Wildwood | 05:08:14 | -26.7 | Dark | Up | 28.6 | 221.5 | Low | 04:53:14 - 05:23:14 | 7595 |
| Henderson | 05:06:31 | -27.2 | Dark | Up | 25.4 | 223.6 | Low | 04:51:31 - 05:21:31 | 7582 |
| Searchlight/Boulder City | 05:06:45 | -27.7 | Dark | Up | 25.8 | 223.9 | Low | 04:51:45 - 05:21:45 | 7531 |
| Laughlin/Bullhead City | 05:06:20 | -28.0 | Dark | Up | 25.8 | 224.2 | Low | 04:51:20 - 05:21:20 | 7489 |
| Niwot | 05:02:58 | -28.5 | Dark | Up | 17.5 | 229.9 | Really Low | 04:47:58 - 05:17:58 | 7480 |
| SwRI | 05:03:14 | -28.5 | Dark | Up | 17.6 | 229.9 | Really Low | 04:48:14 - 05:18:14 | 7476 |
| Patrick | 05:06:10 | -28.2 | Dark | Up | 25.3 | 224.7 | Low | 04:51:10 - 05:21:10 | 7475 |
| Idyllwild | 05:07:20 | -27.9 | Dark | Up | 27.9 | 223.1 | Low | 04:52:20 - 05:22:20 | 7472 |
| Kingman/Dolan Springs | 05:06:31 | -28.3 | Dark | Up | 25.5 | 224.7 | Low | 04:51:31 - 05:21:31 | 7466 |
| Mohave Valley | 05:06:24 | -28.2 | Dark | Up | 26.0 | 224.3 | Low | 04:51:24 - 05:21:24 | 7465 |
| Lake Havasu City | 05:06:10 | -28.6 | Dark | Up | 26.2 | 224.6 | Low | 04:51:10 - 05:21:10 | 7420 |
| DCO | 05:05:49 | -28.8 | Dark | Up | 25.1 | 225.4 | Low | 04:50:49 - 05:20:49 | 7415 |
| Parker | 05:06:10 | -28.9 | Dark | Up | 26.4 | 224.8 | Low | 04:51:10 - 05:21:10 | 7388 |
| Calipatria | 05:06:45 | -29.0 | Dark | Up | 27.8 | 224.2 | Low | 04:51:45 - 05:21:45 | 7361 |
| Blythe | 05:06:27 | -29.1 | Dark | Up | 26.9 | 224.8 | Low | 04:51:27 - 05:21:27 | 7358 |
| Yuma | 05:06:45 | -29.8 | Dark | Up | 27.6 | 225.2 | Low | 04:51:45 - 05:21:45 | 7280 |
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 469987, (2019/08/14 05:43UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 10.98 57 8Bet1Sco 16:05:26.2 -19:48:20 2.6 4.32 64 PPM 231511 16:19:00.4 -14:52:22 5.8 1.63 62 PPM 231439 16:15:53.7 -15:53:17 7.9 0.42 62 PPM 231375 16:13:25.3 -16:05:45 9.2 0.21 63 PPM 231406 16:14:20.0 -16:13:38 10.1 0.20 63 469987 16:14:14.8 -16:01:59 16.5 63 Positions are for J2000
Event circumstances last updated at 2019/06/07 22:32:27 UT
Marc W. Buie, Southwest Research Institute