Event between (84922) 03VS2 and star UC4-617-020908 with event index number of 172059
Geocentric closest approach at 2018/12/26 09:59:34 UTC
J2000 position of star is 05:16:18.4 +33:18:06
Equinox of date position of star is 05:17:30.8 +33:19:15
Stellar brightness R=16.4,
use SENSEUP=128
Star is 65 degrees from the moon.
Moon is 82% illuminated.
TNO apparent brightness V=19.8
[RECON map]
TNO is 36.7 AU from the Sun
and 35.7 AU from the Earth.
The TNO is moving 24.5
km/sec on the sky relative to the star, or,
3.4 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
1572 km.
The sky-plane scale is
25908.3 km/arcsec.
The TNO has an absolute magnitude Hv=4.2
Diameter=871.0 km assuming a 5% albedo -- 35.5 sec chord
Diameter=355.6 km assuming a 30% albedo -- 14.5 sec chord
Dynamical classification is 3:2E
Star training set for 84922, (2018/12/26 10:00UT) Object RA Dec mag sep mel Aldebaran 04:37:00.7 +16:32:46 0.8 19.10 76 3Iot Aur 04:58:14.0 +33:11:40 2.7 4.04 68 17 Aur 05:19:34.1 +33:47:10 6.1 0.63 64 PPM 070144 05:18:50.7 +33:36:46 8.1 0.40 64 PPM 070119 05:17:44.9 +33:10:56 9.4 0.14 64 84922 05:17:33.1 +33:19:17 16.4 64 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 22.5 km
RECON observability=1.0 and success probability=0.3%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 09:57:18 | -55.3 | Dark | Up | 52.9 | 262.4 | Up | 09:46:29 - 10:08:07 | 7580 |
| Tonasket | 09:57:17 | -55.5 | Dark | Up | 52.9 | 262.7 | Up | 09:46:28 - 10:08:06 | 7556 |
| Okanogan | 09:57:17 | -55.7 | Dark | Up | 53.1 | 263.0 | Up | 09:46:28 - 10:08:06 | 7519 |
| Brewster | 09:57:18 | -56.0 | Dark | Up | 53.2 | 263.2 | Up | 09:46:29 - 10:08:07 | 7487 |
| Manson/Chelan | 09:57:18 | -56.3 | Dark | Up | 53.5 | 263.2 | Up | 09:46:29 - 10:08:07 | 7458 |
| Entiat | 09:57:17 | -56.5 | Dark | Up | 53.6 | 263.4 | Up | 09:46:28 - 10:08:06 | 7434 |
| Wenatchee | 09:57:18 | -56.7 | Dark | Up | 53.7 | 263.7 | Up | 09:46:29 - 10:08:07 | 7406 |
| Ellensburg | 09:57:17 | -57.1 | Dark | Up | 53.9 | 264.1 | Up | 09:46:28 - 10:08:06 | 7359 |
| Yakima | 09:57:17 | -57.3 | Dark | Up | 53.9 | 264.6 | Up | 09:46:28 - 10:08:06 | 7317 |
| Pasco | 09:57:12 | -56.7 | Dark | Up | 53.0 | 266.2 | Up | 09:46:23 - 10:08:01 | 7311 |
| Toppenish/White Swan | 09:57:15 | -57.4 | Dark | Up | 53.8 | 265.0 | Up | 09:46:26 - 10:08:04 | 7298 |
| PNWRO | 09:57:11 | -56.7 | Dark | Up | 52.8 | 266.7 | Up | 09:46:22 - 10:08:00 | 7290 |
| George/Umatilla | 09:57:12 | -57.0 | Dark | Up | 53.2 | 266.5 | Up | 09:46:23 - 10:08:01 | 7272 |
| Goldendale | 09:57:16 | -57.9 | Dark | Up | 54.2 | 265.4 | Up | 09:46:27 - 10:08:05 | 7232 |
| The Dalles | 09:57:17 | -58.2 | Dark | Up | 54.4 | 265.5 | Up | 09:46:28 - 10:08:06 | 7201 |
| Maupin | 09:57:15 | -58.4 | Dark | Up | 54.4 | 266.1 | Up | 09:46:26 - 10:08:04 | 7159 |
| Madras/Culver | 09:57:15 | -58.8 | Dark | Up | 54.5 | 266.9 | Up | 09:46:26 - 10:08:04 | 7101 |
| Redmond | 09:57:14 | -59.0 | Dark | Up | 54.5 | 267.3 | Up | 09:46:25 - 10:08:03 | 7063 |
| Sisters | 09:57:15 | -59.2 | Dark | Up | 54.8 | 267.0 | Up | 09:46:26 - 10:08:04 | 7057 |
| Niwot | 09:56:30 | -49.6 | Dark | Up | 42.5 | 281.6 | Up | 09:45:41 - 10:07:19 | 7055 |
| Bend | 09:57:15 | -59.2 | Dark | Up | 54.6 | 267.5 | Up | 09:46:26 - 10:08:04 | 7037 |
| Oregon Observatory | 09:57:15 | -59.4 | Dark | Up | 54.7 | 267.7 | Up | 09:46:26 - 10:08:04 | 7016 |
| La Pine/Gilchrist | 09:57:14 | -59.5 | Dark | Up | 54.8 | 267.9 | Up | 09:46:25 - 10:08:03 | 6994 |
| North Lake | 09:57:12 | -59.4 | Dark | Up | 54.4 | 268.9 | Up | 09:46:23 - 10:08:01 | 6960 |
| Paisley | 09:57:11 | -59.4 | Dark | Up | 54.1 | 270.0 | Up | 09:46:22 - 10:08:00 | 6910 |
| Chiloquin | 09:57:14 | -60.3 | Dark | Up | 55.1 | 269.2 | Up | 09:46:25 - 10:08:03 | 6869 |
| Lakeview | 09:57:09 | -59.6 | Dark | Up | 54.0 | 270.8 | Up | 09:46:20 - 10:07:58 | 6860 |
| Klamath Falls | 09:57:13 | -60.5 | Dark | Up | 55.0 | 269.8 | Up | 09:46:24 - 10:08:02 | 6834 |
| Tulelake | 09:57:12 | -60.4 | Dark | Up | 54.8 | 270.4 | Up | 09:46:23 - 10:08:01 | 6812 |
| Cedarville | 09:57:07 | -59.8 | Dark | Up | 53.8 | 271.8 | Up | 09:46:18 - 10:07:56 | 6795 |
| Fall River/Burney | 09:57:11 | -60.8 | Dark | Up | 54.7 | 271.7 | Up | 09:46:22 - 10:08:00 | 6717 |
| Susanville | 09:57:07 | -60.6 | Dark | Up | 54.2 | 273.0 | Up | 09:46:18 - 10:07:56 | 6666 |
| Gimple | 09:57:07 | -60.9 | Dark | Up | 54.3 | 273.3 | Up | 09:46:18 - 10:07:56 | 6632 |
| Greenville | 09:57:07 | -60.9 | Dark | Up | 54.4 | 273.2 | Up | 09:46:18 - 10:07:56 | 6631 |
| Quincy | 09:57:08 | -61.0 | Dark | Up | 54.3 | 273.5 | Up | 09:46:19 - 10:07:57 | 6609 |
| Portola | 09:57:06 | -60.7 | Dark | Up | 54.0 | 274.0 | Up | 09:46:17 - 10:07:55 | 6606 |
| Reno | 09:57:04 | -60.4 | Dark | Up | 53.5 | 274.7 | Up | 09:46:15 - 10:07:53 | 6593 |
| Carson City | 09:57:04 | -60.5 | Dark | Up | 53.4 | 275.2 | Up | 09:46:15 - 10:07:53 | 6555 |
| Yerington | 09:57:02 | -60.2 | Dark | Up | 52.9 | 275.8 | Up | 09:46:13 - 10:07:51 | 6549 |
| Gardnerville | 09:57:03 | -60.6 | Dark | Up | 53.4 | 275.5 | Up | 09:46:14 - 10:07:52 | 6530 |
| Hawthorne | 09:57:00 | -60.0 | Dark | Up | 52.5 | 276.6 | Up | 09:46:11 - 10:07:49 | 6512 |
| Tonopah | 09:56:55 | -59.1 | Dark | Up | 51.3 | 277.9 | Up | 09:46:06 - 10:07:44 | 6497 |
| Lee Vining | 09:57:00 | -60.5 | Dark | Up | 52.8 | 277.1 | Up | 09:46:11 - 10:07:49 | 6441 |
| Bishop | 09:56:57 | -60.2 | Dark | Up | 52.1 | 278.2 | Up | 09:46:08 - 10:07:46 | 6395 |
| Beatty | 09:56:53 | -59.1 | Dark | Up | 50.8 | 279.5 | Up | 09:46:04 - 10:07:42 | 6386 |
| Indian Springs | 09:56:49 | -58.4 | Dark | Up | 49.9 | 280.4 | Up | 09:46:00 - 10:07:38 | 6380 |
| Henderson | 09:56:47 | -58.0 | Dark | Up | 49.2 | 281.3 | Up | 09:45:58 - 10:07:36 | 6343 |
| Lone Pine | 09:56:56 | -60.2 | Dark | Up | 51.8 | 279.4 | Up | 09:46:07 - 10:07:45 | 6322 |
| Patrick | 09:56:43 | -57.3 | Dark | Up | 48.2 | 282.4 | Up | 09:45:54 - 10:07:32 | 6308 |
| DCO | 09:56:41 | -56.8 | Dark | Up | 47.6 | 283.0 | Up | 09:45:52 - 10:07:30 | 6296 |
| Searchlight/Boulder City | 09:56:46 | -58.1 | Dark | Up | 49.1 | 282.0 | Up | 09:45:57 - 10:07:35 | 6284 |
| Kingman/Dolan Springs | 09:56:43 | -57.5 | Dark | Up | 48.3 | 282.6 | Up | 09:45:54 - 10:07:32 | 6279 |
| Laughlin/Bullhead City | 09:56:45 | -57.9 | Dark | Up | 48.7 | 282.4 | Up | 09:45:56 - 10:07:34 | 6262 |
| Mohave Valley | 09:56:44 | -57.9 | Dark | Up | 48.7 | 282.7 | Up | 09:45:55 - 10:07:33 | 6234 |
| Lake Havasu City | 09:56:43 | -57.8 | Dark | Up | 48.4 | 283.3 | Up | 09:45:54 - 10:07:32 | 6199 |
| Parker | 09:56:42 | -57.9 | Dark | Up | 48.3 | 283.7 | Up | 09:45:53 - 10:07:31 | 6163 |
| CPSLO | 09:57:01 | -62.6 | Dark | Up | 53.6 | 280.0 | Up | 09:46:12 - 10:07:50 | 6121 |
| Blythe | 09:56:42 | -58.2 | Dark | Up | 48.4 | 284.1 | Up | 09:45:53 - 10:07:31 | 6099 |
| Idyllwild | 09:56:49 | -59.9 | Dark | Up | 50.1 | 283.3 | Up | 09:46:00 - 10:07:38 | 6052 |
| Wildwood | 09:56:54 | -61.3 | Dark | Up | 51.7 | 282.3 | Up | 09:46:05 - 10:07:43 | 6042 |
| Calipatria | 09:56:45 | -59.0 | Dark | Up | 49.0 | 284.4 | Up | 09:45:56 - 10:07:34 | 6020 |
| Yuma | 09:56:41 | -58.4 | Dark | Up | 48.2 | 285.1 | Up | 09:45:52 - 10:07:30 | 6000 |
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 84922, (2018/12/26 10:00UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 19.10 76 3Iot Aur 04:56:59.6 +33:09:58 2.7 4.04 68 17 Aur 05:18:19.0 +33:46:02 6.1 0.63 64 PPM 070144 05:17:35.7 +33:35:37 8.1 0.40 64 PPM 070119 05:16:30.2 +33:09:46 9.4 0.14 64 84922 05:16:18.4 +33:18:06 16.4 64 Positions are for J2000
Event circumstances last updated at 2018/05/24 02:04:36 UT
Marc W. Buie, Southwest Research Institute