Event between (471954) 13RM98 and star UC4-469-136302 with event index number of 222188
Geocentric closest approach at 2019/11/08 03:55:38 UTC
J2000 position of star is 23:51:15.9 +03:43:44
Equinox of date position of star is 23:52:11.0 +03:49:43
Stellar brightness R=14.0,
use SENSEUP=64
Star is 10 degrees from the moon.
Moon is 83% illuminated.
TNO apparent brightness V=22.0
[RECON map]
TNO is 45.2 AU from the Sun
and 44.5 AU from the Earth.
The TNO is moving 16.9
km/sec on the sky relative to the star, or,
1.9 arcsec/hr.
The 1-sigma error in the time of the event is 236 seconds.
The 1-sigma cross-track error in the shadow position is
4418 km.
The sky-plane scale is
32290.7 km/arcsec.
The TNO has an absolute magnitude Hv=5.4
Diameter=501.2 km assuming a 5% albedo -- 29.7 sec chord
Diameter=204.6 km assuming a 30% albedo -- 12.1 sec chord
Dynamical classification is SCATEXTD
Star training set for 471954, (2019/11/08 03:56UT) Object RA Dec mag sep mel Fomalhaut 22:58:44.6 -29:31:00 1.2 35.74 27 Algenib 00:14:15.6 +15:17:38 2.8 12.67 22 22 Psc 23:52:58.9 +03:02:27 5.5 0.82 9 PPM 174541 23:55:20.5 +03:47:16 8.2 0.77 10 PPM 174454 23:50:14.0 +03:38:18 9.5 0.55 10 PPM 174489 23:52:17.6 +04:00:35 11.1 0.17 10 471954 23:52:16.9 +03:50:21 14.0 10 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
3.8 sigma about the mid-time.
The median site spacing is 17.8 km
RECON observability=1.0 and success probability=4.8%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 03:54:47 | -34.0 | Dark | Up | 43.7 | 164.0 | Up | 03:39:47 - 04:09:47 | 7685 |
| Tonasket | 03:54:48 | -34.1 | Dark | Up | 44.0 | 164.0 | Up | 03:39:48 - 04:09:48 | 7670 |
| Okanogan | 03:54:49 | -34.1 | Dark | Up | 44.3 | 163.7 | Up | 03:39:49 - 04:09:49 | 7651 |
| Brewster | 03:54:52 | -34.0 | Dark | Up | 44.5 | 163.3 | Up | 03:39:52 - 04:09:52 | 7639 |
| Manson/Chelan | 03:54:53 | -33.9 | Dark | Up | 44.6 | 162.8 | Up | 03:39:53 - 04:09:53 | 7635 |
| Entiat | 03:54:53 | -33.9 | Dark | Up | 44.8 | 162.6 | Up | 03:39:53 - 04:09:53 | 7622 |
| Wenatchee | 03:54:54 | -33.9 | Dark | Up | 45.0 | 162.4 | Up | 03:39:54 - 04:09:54 | 7608 |
| Ellensburg | 03:54:56 | -33.8 | Dark | Up | 45.4 | 162.0 | Up | 03:39:56 - 04:09:56 | 7586 |
| Yakima | 03:54:58 | -33.9 | Dark | Up | 45.8 | 161.8 | Up | 03:39:58 - 04:09:58 | 7558 |
| Toppenish/White Swan | 03:54:58 | -34.1 | Dark | Up | 46.0 | 162.0 | Up | 03:39:58 - 04:09:58 | 7538 |
| Goldendale | 03:55:01 | -33.9 | Dark | Up | 46.4 | 161.2 | Up | 03:40:01 - 04:10:01 | 7512 |
| The Dalles | 03:55:03 | -33.7 | Dark | Up | 46.6 | 160.7 | Up | 03:40:03 - 04:10:03 | 7507 |
| Pasco | 03:54:53 | -34.9 | Dark | Up | 46.4 | 163.7 | Up | 03:39:53 - 04:09:53 | 7493 |
| George/Umatilla | 03:54:54 | -34.9 | Dark | Up | 46.7 | 163.3 | Up | 03:39:54 - 04:09:54 | 7476 |
| Maupin | 03:55:04 | -33.8 | Dark | Up | 47.0 | 160.7 | Up | 03:40:04 - 04:10:04 | 7475 |
| PNWRO | 03:54:53 | -35.1 | Dark | Up | 46.7 | 164.0 | Up | 03:39:53 - 04:09:53 | 7469 |
| Madras/Culver | 03:55:06 | -33.9 | Dark | Up | 47.5 | 160.4 | Up | 03:40:06 - 04:10:06 | 7437 |
| Sisters | 03:55:08 | -33.7 | Dark | Up | 47.7 | 159.7 | Up | 03:40:08 - 04:10:08 | 7427 |
| Redmond | 03:55:06 | -34.0 | Dark | Up | 47.8 | 160.2 | Up | 03:40:06 - 04:10:06 | 7413 |
| Bend | 03:55:08 | -33.9 | Dark | Up | 48.0 | 159.9 | Up | 03:40:08 - 04:10:08 | 7402 |
| Oregon Observatory | 03:55:09 | -33.8 | Dark | Up | 48.1 | 159.7 | Up | 03:40:09 - 04:10:09 | 7393 |
| La Pine/Gilchrist | 03:55:10 | -33.8 | Dark | Up | 48.3 | 159.5 | Up | 03:40:10 - 04:10:10 | 7380 |
| North Lake | 03:55:08 | -34.3 | Dark | Up | 48.9 | 160.2 | Up | 03:40:08 - 04:10:08 | 7330 |
| Chiloquin | 03:55:14 | -33.8 | Dark | Up | 49.3 | 158.6 | Up | 03:40:14 - 04:10:14 | 7310 |
| Klamath Falls | 03:55:15 | -33.9 | Dark | Up | 49.6 | 158.6 | Up | 03:40:15 - 04:10:15 | 7282 |
| Paisley | 03:55:08 | -34.7 | Dark | Up | 49.5 | 160.6 | Up | 03:40:08 - 04:10:08 | 7279 |
| Tulelake | 03:55:16 | -34.1 | Dark | Up | 49.9 | 158.9 | Up | 03:40:16 - 04:10:16 | 7253 |
| Lakeview | 03:55:09 | -34.9 | Dark | Up | 50.0 | 160.7 | Up | 03:40:09 - 04:10:09 | 7235 |
| Fall River/Burney | 03:55:17 | -34.3 | Dark | Up | 50.8 | 158.6 | Up | 03:40:17 - 04:10:17 | 7182 |
| Cedarville | 03:55:11 | -35.2 | Dark | Up | 50.7 | 160.7 | Up | 03:40:11 - 04:10:11 | 7180 |
| Susanville | 03:55:15 | -35.0 | Dark | Up | 51.6 | 159.5 | Up | 03:40:15 - 04:10:15 | 7110 |
| Greenville | 03:55:17 | -34.8 | Dark | Up | 51.8 | 158.9 | Up | 03:40:17 - 04:10:17 | 7099 |
| Gimple | 03:55:17 | -34.9 | Dark | Up | 51.8 | 159.0 | Up | 03:40:17 - 04:10:17 | 7096 |
| Quincy | 03:55:20 | -34.8 | Dark | Up | 52.0 | 158.9 | Up | 03:40:20 - 04:10:20 | 7083 |
| Portola | 03:55:16 | -35.2 | Dark | Up | 52.2 | 159.5 | Up | 03:40:16 - 04:10:16 | 7058 |
| Reno | 03:55:14 | -35.7 | Dark | Up | 52.6 | 160.4 | Up | 03:40:14 - 04:10:14 | 7016 |
| Carson City | 03:55:16 | -35.8 | Dark | Up | 53.0 | 160.3 | Up | 03:40:16 - 04:10:16 | 6987 |
| Gardnerville | 03:55:17 | -35.9 | Dark | Up | 53.2 | 160.3 | Up | 03:40:17 - 04:10:17 | 6967 |
| Yerington | 03:55:12 | -36.3 | Dark | Up | 53.3 | 161.2 | Up | 03:40:12 - 04:10:12 | 6951 |
| Hawthorne | 03:55:11 | -36.8 | Dark | Up | 53.9 | 161.9 | Up | 03:40:11 - 04:10:11 | 6897 |
| Lee Vining | 03:55:16 | -36.5 | Dark | Up | 54.3 | 160.8 | Up | 03:40:16 - 04:10:16 | 6868 |
| Tonopah | 03:55:06 | -37.9 | Dark | Up | 54.7 | 164.0 | Up | 03:40:06 - 04:10:06 | 6813 |
| Bishop | 03:55:15 | -37.1 | Dark | Up | 55.1 | 161.8 | Up | 03:40:15 - 04:10:15 | 6796 |
| Lone Pine | 03:55:14 | -37.5 | Dark | Up | 55.9 | 162.0 | Up | 03:40:14 - 04:10:14 | 6722 |
| CPSLO | 03:55:30 | -35.6 | Dark | Up | 56.4 | 157.0 | Up | 03:40:30 - 04:10:30 | 6703 |
| Beatty | 03:55:07 | -38.5 | Dark | Up | 55.9 | 164.3 | Up | 03:40:07 - 04:10:07 | 6703 |
| Indian Springs | 03:55:05 | -39.4 | Dark | Up | 56.4 | 166.1 | Up | 03:40:05 - 04:10:05 | 6640 |
| Niwot | 03:54:05 | -46.3 | Dark | Up | 53.5 | 184.4 | Up | 03:39:05 - 04:09:05 | 6593 |
| Henderson | 03:55:00 | -40.0 | Dark | Up | 57.1 | 167.1 | Up | 03:40:00 - 04:10:00 | 6571 |
| Wildwood | 03:55:23 | -37.4 | Dark | Up | 58.1 | 159.8 | Up | 03:40:23 - 04:10:23 | 6531 |
| Searchlight/Boulder City | 03:55:02 | -40.1 | Dark | Up | 57.6 | 167.0 | Up | 03:40:02 - 04:10:02 | 6521 |
| Laughlin/Bullhead City | 03:55:01 | -40.4 | Dark | Up | 58.0 | 167.5 | Up | 03:40:01 - 04:10:01 | 6484 |
| Patrick | 03:54:58 | -41.0 | Dark | Up | 57.9 | 168.9 | Up | 03:39:58 - 04:09:58 | 6480 |
| Kingman/Dolan Springs | 03:54:59 | -40.9 | Dark | Up | 58.0 | 168.5 | Up | 03:39:59 - 04:09:59 | 6468 |
| Mohave Valley | 03:55:01 | -40.5 | Dark | Up | 58.2 | 167.5 | Up | 03:40:01 - 04:10:01 | 6460 |
| Idyllwild | 03:55:17 | -38.9 | Dark | Up | 58.9 | 163.1 | Up | 03:40:17 - 04:10:17 | 6435 |
| DCO | 03:54:54 | -41.6 | Dark | Up | 58.3 | 170.1 | Up | 03:39:54 - 04:09:54 | 6430 |
| Lake Havasu City | 03:55:02 | -40.8 | Dark | Up | 58.7 | 167.8 | Up | 03:40:02 - 04:10:02 | 6417 |
| Parker | 03:55:01 | -40.8 | Dark | Up | 59.0 | 167.7 | Up | 03:40:01 - 04:10:01 | 6386 |
| Blythe | 03:55:06 | -40.7 | Dark | Up | 59.5 | 167.0 | Up | 03:40:06 - 04:10:06 | 6351 |
| Calipatria | 03:55:11 | -40.0 | Dark | Up | 59.8 | 165.0 | Up | 03:40:11 - 04:10:11 | 6341 |
| Yuma | 03:55:07 | -40.7 | Dark | Up | 60.4 | 166.6 | Up | 03:40:07 - 04:10:07 | 6272 |
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 471954, (2019/11/08 03:56UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.5 -29:37:23 1.2 35.74 27 Algenib 00:13:14.2 +15:11:01 2.8 12.67 22 22 Psc 23:51:57.9 +02:55:49 5.5 0.82 9 PPM 174541 23:54:19.5 +03:40:38 8.2 0.77 10 PPM 174454 23:49:13.0 +03:31:41 9.5 0.55 10 PPM 174489 23:51:16.6 +03:53:57 11.1 0.17 10 471954 23:51:15.9 +03:43:44 14.0 10 Positions are for J2000
Event circumstances last updated at 2017/12/07 17:04:39 UT
Marc W. Buie, Southwest Research Institute