Event between (84522) 02TC302 and star UC4-594-005878 with event index number of 92080
Geocentric closest approach at 2017/12/01 01:44:37 UTC
J2000 position of star is 02:23:56.4 +28:42:36
Equinox of date position of star is 02:24:57.1 +28:47:16
Stellar brightness R=14.6,
use SENSEUP=128
Star is 21 degrees from the moon.
Moon is 90% illuminated.
TNO apparent brightness V=20.4
[RECON map]
TNO is 44.6 AU from the Sun
and 43.7 AU from the Earth.
The TNO is moving 23.1
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 181 seconds.
The 1-sigma cross-track error in the shadow position is
4874 km.
The sky-plane scale is
31713.0 km/arcsec.
The TNO has an absolute magnitude Hv=3.9
Diameter=1000.0 km assuming a 5% albedo -- 43.3 sec chord
Diameter=408.3 km assuming a 30% albedo -- 17.7 sec chord
Dynamical classification is 5:2EEE
Star training set for 84522, (2017/12/01 01:45UT) Object RA Dec mag sep mel Aldebaran 04:36:57.0 +16:32:38 0.8 32.67 37 Hamal 02:08:11.2 +23:32:47 2.0 6.46 16 10 Tri 02:19:59.7 +28:43:28 5.3 1.10 21 PPM 091647 02:25:44.5 +29:19:31 8.3 0.56 22 PPM 091651 02:25:58.7 +28:54:11 8.9 0.24 21 84522 02:24:59.2 +28:47:26 14.6 21 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 14.3 km
RECON observability=0.4 and success probability=4.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 01:46:17 | -16.2 | AT | Up | 41.4 | 92.1 | Up | 01:31:17 - 02:01:17 | 7550 |
| Tonasket | 01:46:18 | -16.1 | AT | Up | 41.4 | 91.9 | Up | 01:31:18 - 02:01:18 | 7537 |
| Okanogan | 01:46:19 | -16.0 | AT | Up | 41.3 | 91.5 | Up | 01:31:19 - 02:01:19 | 7524 |
| Manson/Chelan | 01:46:21 | -15.5 | AT | Up | 41.0 | 90.7 | Up | 01:31:21 - 02:01:21 | 7522 |
| Brewster | 01:46:20 | -15.8 | AT | Up | 41.2 | 91.1 | Up | 01:31:20 - 02:01:20 | 7518 |
| Entiat | 01:46:22 | -15.4 | AT | Up | 40.9 | 90.4 | Up | 01:31:22 - 02:01:22 | 7512 |
| Wenatchee | 01:46:23 | -15.2 | AT | Up | 40.8 | 90.1 | Up | 01:31:23 - 02:01:23 | 7502 |
| Ellensburg | 01:46:26 | -15.0 | AT | Up | 40.7 | 89.6 | Up | 01:31:26 - 02:01:26 | 7489 |
| Yakima | 01:46:28 | -14.9 | AT | Up | 40.7 | 89.3 | Up | 01:31:28 - 02:01:28 | 7466 |
| Toppenish/White Swan | 01:46:28 | -14.9 | AT | Up | 40.8 | 89.2 | Up | 01:31:28 - 02:01:28 | 7446 |
| The Dalles | 01:46:32 | -14.2 | AT | Up | 40.2 | 88.0 | Up | 01:31:32 - 02:01:32 | 7436 |
| Goldendale | 01:46:32 | -14.5 | AT | Up | 40.5 | 88.4 | Up | 01:31:32 - 02:01:32 | 7433 |
| Maupin | 01:46:34 | -14.1 | AT | Up | 40.3 | 87.7 | Up | 01:31:34 - 02:01:34 | 7407 |
| Pasco | 01:46:27 | -15.7 | AT | Up | 41.7 | 90.0 | Up | 01:31:27 - 02:01:27 | 7384 |
| Sisters | 01:46:39 | -13.6 | AT | Up | 39.9 | 86.6 | Up | 01:31:39 - 02:01:39 | 7378 |
| Madras/Culver | 01:46:36 | -14.0 | AT | Up | 40.3 | 87.2 | Up | 01:31:36 - 02:01:36 | 7377 |
| George/Umatilla | 01:46:29 | -15.5 | AT | Up | 41.5 | 89.6 | Up | 01:31:29 - 02:01:29 | 7374 |
| PNWRO | 01:46:28 | -15.8 | AT | Up | 41.8 | 89.9 | Up | 01:31:28 - 02:01:28 | 7359 |
| Redmond | 01:46:38 | -13.8 | AT | Up | 40.2 | 86.9 | Up | 01:31:38 - 02:01:38 | 7358 |
| Bend | 01:46:38 | -13.7 | AT | Up | 40.1 | 86.6 | Up | 01:31:38 - 02:01:38 | 7352 |
| Oregon Observatory | 01:46:39 | -13.5 | AT | Up | 40.0 | 86.4 | Up | 01:31:39 - 02:01:39 | 7348 |
| La Pine/Gilchrist | 01:46:41 | -13.4 | AT | Up | 40.0 | 86.2 | Up | 01:31:41 - 02:01:41 | 7338 |
| Chiloquin | 01:46:46 | -12.9 | AT | Up | 39.6 | 85.0 | Up | 01:31:46 - 02:01:46 | 7287 |
| North Lake | 01:46:42 | -13.7 | AT | Up | 40.4 | 86.2 | Up | 01:31:42 - 02:01:42 | 7284 |
| Klamath Falls | 01:46:47 | -12.8 | AT | Up | 39.7 | 84.8 | Up | 01:31:47 - 02:01:47 | 7262 |
| Paisley | 01:46:44 | -13.8 | AT | Up | 40.6 | 86.0 | Up | 01:31:44 - 02:01:44 | 7234 |
| Tulelake | 01:46:47 | -12.9 | AT | Up | 39.9 | 84.8 | Up | 01:31:47 - 02:01:47 | 7232 |
| Lakeview | 01:46:46 | -13.8 | AT | Up | 40.7 | 85.7 | Up | 01:31:46 - 02:01:46 | 7193 |
| Fall River/Burney | 01:46:51 | -12.7 | AT | Up | 39.8 | 84.1 | Up | 01:31:51 - 02:01:51 | 7171 |
| Cedarville | 01:46:48 | -13.7 | AT | Up | 40.8 | 85.2 | Up | 01:31:48 - 02:01:48 | 7144 |
| Susanville | 01:46:52 | -13.1 | AT | Up | 40.3 | 84.0 | Up | 01:31:52 - 02:01:52 | 7095 |
| Greenville | 01:46:54 | -12.8 | AT | Up | 40.1 | 83.6 | Up | 01:31:54 - 02:01:54 | 7092 |
| Gimple | 01:46:54 | -12.9 | AT | Up | 40.2 | 83.6 | Up | 01:31:54 - 02:01:54 | 7087 |
| Quincy | 01:46:55 | -12.7 | AT | Up | 40.1 | 83.4 | Up | 01:31:55 - 02:01:55 | 7078 |
| Portola | 01:46:55 | -13.0 | AT | Up | 40.4 | 83.6 | Up | 01:31:55 - 02:01:55 | 7047 |
| Reno | 01:46:55 | -13.4 | AT | Up | 40.9 | 83.7 | Up | 01:31:55 - 02:01:55 | 6998 |
| Carson City | 01:46:57 | -13.4 | AT | Up | 40.9 | 83.4 | Up | 01:31:57 - 02:01:57 | 6973 |
| Gardnerville | 01:46:58 | -13.3 | AT | Up | 40.9 | 83.3 | Up | 01:31:58 - 02:01:58 | 6955 |
| Yerington | 01:46:57 | -13.8 | AT | Up | 41.3 | 83.6 | Up | 01:31:57 - 02:01:57 | 6929 |
| Hawthorne | 01:46:58 | -14.0 | AT | Up | 41.7 | 83.5 | Up | 01:31:58 - 02:01:58 | 6872 |
| Lee Vining | 01:47:01 | -13.5 | AT | Up | 41.3 | 82.8 | Up | 01:32:01 - 02:02:01 | 6858 |
| Bishop | 01:47:01 | -13.9 | AT | Up | 41.8 | 82.6 | Up | 01:32:01 - 02:02:01 | 6780 |
| Tonopah | 01:46:58 | -15.0 | AT | Up | 42.8 | 83.9 | Up | 01:31:58 - 02:01:58 | 6770 |
| CPSLO | 01:47:12 | -11.5 | CT | Up | 39.7 | 79.8 | Up | 01:32:12 - 02:02:12 | 6751 |
| Lone Pine | 01:47:04 | -13.9 | AT | Up | 41.9 | 82.1 | Up | 01:32:04 - 02:02:04 | 6710 |
| Beatty | 01:47:01 | -15.0 | AT | Up | 43.0 | 83.0 | Up | 01:32:01 - 02:02:01 | 6665 |
| Indian Springs | 01:47:00 | -15.7 | AT | Up | 43.8 | 83.3 | Up | 01:32:00 - 02:02:00 | 6587 |
| Wildwood | 01:47:13 | -12.8 | AT | Up | 41.1 | 79.7 | Up | 01:32:13 - 02:02:13 | 6558 |
| Henderson | 01:47:01 | -16.1 | AT | Up | 44.3 | 83.1 | Up | 01:32:01 - 02:02:01 | 6512 |
| Searchlight/Boulder City | 01:47:03 | -16.0 | AT | Up | 44.3 | 82.6 | Up | 01:32:03 - 02:02:03 | 6467 |
| Idyllwild | 01:47:12 | -14.2 | AT | Up | 42.6 | 80.2 | Up | 01:32:12 - 02:02:12 | 6433 |
| Laughlin/Bullhead City | 01:47:03 | -16.2 | AT | Up | 44.5 | 82.5 | Up | 01:32:03 - 02:02:03 | 6427 |
| Patrick | 01:47:01 | -16.8 | AT | Up | 45.1 | 83.0 | Up | 01:32:01 - 02:02:01 | 6409 |
| Mohave Valley | 01:47:04 | -16.2 | AT | Up | 44.5 | 82.2 | Up | 01:32:04 - 02:02:04 | 6406 |
| Kingman/Dolan Springs | 01:47:03 | -16.6 | AT | Up | 45.0 | 82.7 | Up | 01:32:03 - 02:02:03 | 6402 |
| Lake Havasu City | 01:47:05 | -16.3 | AT | Up | 44.7 | 81.9 | Up | 01:32:05 - 02:02:05 | 6364 |
| DCO | 01:47:02 | -17.3 | AT | Up | 45.7 | 83.1 | Up | 01:32:02 - 02:02:02 | 6349 |
| Parker | 01:47:06 | -16.2 | AT | Up | 44.6 | 81.6 | Up | 01:32:06 - 02:02:06 | 6336 |
| Niwot | 01:46:29 | -24.4 | Dark | Up | 52.1 | 93.4 | Up | 01:31:29 - 02:01:29 | 6327 |
| Calipatria | 01:47:12 | -14.9 | AT | Up | 43.5 | 80.1 | Up | 01:32:12 - 02:02:12 | 6324 |
| Blythe | 01:47:08 | -15.8 | AT | Up | 44.3 | 81.0 | Up | 01:32:08 - 02:02:08 | 6312 |
| Yuma | 01:47:12 | -15.5 | AT | Up | 44.1 | 80.1 | Up | 01:32:12 - 02:02:12 | 6244 |
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 84522, (2017/12/01 01:45UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 32.67 37 Hamal 02:07:10.6 +23:27:42 2.0 6.46 16 10 Tri 02:18:57.1 +28:38:33 5.3 1.10 21 PPM 091647 02:24:41.5 +29:14:41 8.3 0.56 22 PPM 091651 02:24:55.8 +28:49:22 8.9 0.24 21 84522 02:23:56.4 +28:42:36 14.6 21 Positions are for J2000
Event circumstances last updated at 2017/04/24 16:14:39 UT
Marc W. Buie, Southwest Research Institute