Event between (523740) 14TV85 and star GA0840:03937609 with event index number of 306055
Geocentric closest approach at 2020/02/13 10:21:00 UTC
J2000 position of star is 10:33:28.6 -04:54:22
Equinox of date position of star is 10:34:28.6 -05:00:31
Stellar brightness G=14.0,
use SENSEUP=64
Star is 43 degrees from the moon.
Moon is 77% illuminated.
TNO apparent brightness V=21.3
[RECON map]
TNO is 14.7 AU from the Sun
and 13.8 AU from the Earth.
The TNO is moving 19.8
km/sec on the sky relative to the star, or,
7.1 arcsec/hr.
The 1-sigma error in the time of the event is 40 seconds.
The 1-sigma cross-track error in the shadow position is
582 km.
The sky-plane scale is
9974.5 km/arcsec.
The TNO has an absolute magnitude Hv=9.6
Diameter=72.4 km assuming a 5% albedo -- 3.7 sec chord
Diameter=29.6 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
Star training set for 523740, (2020/02/13 10:21UT) Object RA Dec mag sep mel Regulus 10:09:26.5 +11:52:05 1.3 17.99 52 Alphard 09:28:34.6 -08:44:48 2.0 16.78 60 PPM 193464 10:29:45.1 -03:50:45 6.5 1.66 44 PPM 193533 10:34:15.7 -05:28:03 7.5 0.46 43 PPM 193551 10:34:56.9 -04:58:47 9.3 0.12 43 523740 10:34:29.6 -05:00:37 14.0 43 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 15.2 km
RECON observability=1.0 and success probability=0.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Clarence Fulton | 10:21:01 | -44.8 | Dark | Up | 32.1 | 204.3 | Up | 10:17:09 - 10:24:53 | 7744 |
| Kelowna | 10:21:00 | -45.1 | Dark | Up | 32.5 | 204.2 | Up | 10:17:08 - 10:24:52 | 7720 |
| Summerland | 10:21:00 | -45.4 | Dark | Up | 32.8 | 204.1 | Up | 10:17:08 - 10:24:52 | 7703 |
| Penticton | 10:21:00 | -45.4 | Dark | Up | 32.8 | 204.2 | Up | 10:17:08 - 10:24:52 | 7701 |
| Oliver | 10:20:59 | -45.6 | Dark | Up | 33.1 | 204.3 | Up | 10:17:07 - 10:24:51 | 7682 |
| Anarchist Mountain Observatory | 10:20:58 | -45.6 | Dark | Up | 33.2 | 204.6 | Up | 10:17:06 - 10:24:50 | 7676 |
| Tonasket | 10:20:57 | -45.9 | Dark | Up | 33.5 | 204.6 | Up | 10:17:05 - 10:24:49 | 7657 |
| Okanogan | 10:20:58 | -46.2 | Dark | Up | 33.9 | 204.5 | Up | 10:17:06 - 10:24:50 | 7635 |
| Brewster | 10:20:57 | -46.4 | Dark | Up | 34.2 | 204.3 | Up | 10:17:05 - 10:24:49 | 7616 |
| Manson/Chelan | 10:20:57 | -46.8 | Dark | Up | 34.5 | 204.0 | Up | 10:17:05 - 10:24:49 | 7598 |
| Entiat | 10:20:58 | -46.9 | Dark | Up | 34.7 | 203.9 | Up | 10:17:06 - 10:24:50 | 7584 |
| Victoria | 10:21:10 | -47.9 | Dark | Up | 34.7 | 200.0 | Up | 10:17:18 - 10:25:02 | 7580 |
| Wenatchee | 10:20:57 | -47.2 | Dark | Up | 34.9 | 203.9 | Up | 10:17:05 - 10:24:49 | 7568 |
| Ellensburg | 10:20:57 | -47.6 | Dark | Up | 35.4 | 203.8 | Up | 10:17:05 - 10:24:49 | 7540 |
| Pasco | 10:20:51 | -47.3 | Dark | Up | 35.7 | 205.6 | Up | 10:16:59 - 10:24:43 | 7519 |
| Yakima | 10:20:56 | -47.8 | Dark | Up | 35.8 | 203.9 | Up | 10:17:04 - 10:24:48 | 7515 |
| PNWRO | 10:20:49 | -47.4 | Dark | Up | 35.8 | 206.0 | Up | 10:16:57 - 10:24:41 | 7508 |
| Toppenish/White Swan | 10:20:56 | -47.9 | Dark | Up | 35.9 | 204.1 | Up | 10:17:04 - 10:24:48 | 7505 |
| Goldendale | 10:20:56 | -48.5 | Dark | Up | 36.5 | 203.8 | Up | 10:17:04 - 10:24:48 | 7464 |
| The Dalles | 10:20:56 | -48.8 | Dark | Up | 36.8 | 203.4 | Up | 10:17:04 - 10:24:48 | 7444 |
| Maupin | 10:20:55 | -49.0 | Dark | Up | 37.2 | 203.7 | Up | 10:17:03 - 10:24:47 | 7420 |
| Redmond | 10:20:53 | -49.7 | Dark | Up | 38.1 | 203.8 | Up | 10:17:01 - 10:24:45 | 7361 |
| Niwot | 10:19:45 | -41.6 | Dark | Up | 35.0 | 223.3 | Up | 10:15:53 - 10:23:37 | 7357 |
| Sisters | 10:20:55 | -49.9 | Dark | Up | 38.1 | 203.3 | Up | 10:17:03 - 10:24:47 | 7356 |
| SwRI | 10:19:45 | -41.8 | Dark | Up | 35.2 | 223.3 | Up | 10:15:53 - 10:23:37 | 7348 |
| Bend | 10:20:53 | -49.9 | Dark | Up | 38.3 | 203.7 | Up | 10:17:01 - 10:24:45 | 7345 |
| Oregon Observatory | 10:20:54 | -50.1 | Dark | Up | 38.5 | 203.6 | Up | 10:17:02 - 10:24:46 | 7332 |
| La Pine/Gilchrist | 10:20:53 | -50.3 | Dark | Up | 38.7 | 203.6 | Up | 10:17:01 - 10:24:45 | 7318 |
| North Lake | 10:20:50 | -50.2 | Dark | Up | 38.9 | 204.5 | Up | 10:16:58 - 10:24:42 | 7300 |
| Paisley | 10:20:48 | -50.3 | Dark | Up | 39.3 | 205.1 | Up | 10:16:56 - 10:24:40 | 7271 |
| Lakeview | 10:20:46 | -50.5 | Dark | Up | 39.7 | 205.5 | Up | 10:16:54 - 10:24:38 | 7241 |
| Klamath Falls | 10:20:51 | -51.3 | Dark | Up | 40.1 | 203.7 | Up | 10:16:59 - 10:24:43 | 7217 |
| Cedarville | 10:20:44 | -50.8 | Dark | Up | 40.2 | 205.9 | Up | 10:16:52 - 10:24:36 | 7200 |
| Fall River/Burney | 10:20:46 | -51.9 | Dark | Up | 41.1 | 204.6 | Up | 10:16:54 - 10:24:38 | 7144 |
| Susanville | 10:20:43 | -51.8 | Dark | Up | 41.4 | 205.7 | Up | 10:16:51 - 10:24:35 | 7114 |
| Gimple | 10:20:43 | -52.1 | Dark | Up | 41.7 | 205.6 | Up | 10:16:51 - 10:24:35 | 7091 |
| Greenville | 10:20:44 | -52.1 | Dark | Up | 41.8 | 205.5 | Up | 10:16:52 - 10:24:36 | 7090 |
| Portola | 10:20:41 | -52.0 | Dark | Up | 41.9 | 206.2 | Up | 10:16:49 - 10:24:33 | 7076 |
| Quincy | 10:20:44 | -52.3 | Dark | Up | 41.9 | 205.6 | Up | 10:16:52 - 10:24:36 | 7075 |
| Reno | 10:20:38 | -51.8 | Dark | Up | 41.9 | 207.1 | Up | 10:16:46 - 10:24:30 | 7070 |
| Carson City | 10:20:37 | -52.0 | Dark | Up | 42.2 | 207.3 | Up | 10:16:45 - 10:24:29 | 7045 |
| Yerington | 10:20:34 | -51.7 | Dark | Up | 42.2 | 208.1 | Up | 10:16:42 - 10:24:26 | 7043 |
| Gardnerville | 10:20:37 | -52.1 | Dark | Up | 42.4 | 207.4 | Up | 10:16:45 - 10:24:29 | 7028 |
| Hawthorne | 10:20:31 | -51.6 | Dark | Up | 42.4 | 209.0 | Up | 10:16:39 - 10:24:23 | 7020 |
| Tonopah | 10:20:25 | -50.9 | Dark | Up | 42.2 | 210.9 | Up | 10:16:33 - 10:24:17 | 7013 |
| Lee Vining | 10:20:32 | -52.2 | Dark | Up | 43.1 | 208.6 | Up | 10:16:40 - 10:24:24 | 6970 |
| Bishop | 10:20:27 | -52.0 | Dark | Up | 43.3 | 209.8 | Up | 10:16:35 - 10:24:19 | 6940 |
| Beatty | 10:20:19 | -51.1 | Dark | Up | 43.1 | 212.0 | Up | 10:16:27 - 10:24:11 | 6937 |
| Indian Springs | 10:20:15 | -50.5 | Dark | Up | 42.9 | 213.5 | Up | 10:16:23 - 10:24:07 | 6934 |
| Henderson | 10:20:11 | -50.3 | Dark | Up | 43.0 | 214.6 | Up | 10:16:19 - 10:24:03 | 6907 |
| Patrick | 10:20:05 | -49.7 | Dark | Up | 43.0 | 216.2 | Up | 10:16:13 - 10:23:57 | 6881 |
| DCO | 10:20:01 | -49.3 | Dark | Up | 42.9 | 217.2 | Up | 10:16:09 - 10:23:53 | 6871 |
| Searchlight/Boulder City | 10:20:09 | -50.5 | Dark | Up | 43.5 | 215.0 | Up | 10:16:17 - 10:24:01 | 6865 |
| Kingman/Dolan Springs | 10:20:05 | -49.9 | Dark | Up | 43.3 | 216.1 | Up | 10:16:13 - 10:23:57 | 6861 |
| Laughlin/Bullhead City | 10:20:07 | -50.3 | Dark | Up | 43.5 | 215.5 | Up | 10:16:15 - 10:23:59 | 6849 |
| Mohave Valley | 10:20:07 | -50.4 | Dark | Up | 43.8 | 215.7 | Up | 10:16:15 - 10:23:59 | 6829 |
| Lake Havasu City | 10:20:04 | -50.4 | Dark | Up | 44.0 | 216.2 | Up | 10:16:12 - 10:23:56 | 6803 |
| George/Scottsdale | 10:19:53 | -48.8 | Dark | Up | 43.3 | 219.5 | Up | 10:16:01 - 10:23:45 | 6789 |
| Parker | 10:20:03 | -50.5 | Dark | Up | 44.2 | 216.4 | Up | 10:16:11 - 10:23:55 | 6777 |
| CPSLO | 10:20:31 | -54.6 | Dark | Up | 46.0 | 207.9 | Up | 10:16:39 - 10:24:23 | 6741 |
| Blythe | 10:20:03 | -51.0 | Dark | Up | 44.8 | 216.4 | Up | 10:16:11 - 10:23:55 | 6731 |
| Idyllwild | 10:20:13 | -52.5 | Dark | Up | 45.7 | 213.7 | Up | 10:16:21 - 10:24:05 | 6700 |
| Wildwood | 10:20:20 | -53.7 | Dark | Up | 46.2 | 211.1 | Up | 10:16:28 - 10:24:12 | 6689 |
| Calipatria | 10:20:06 | -51.9 | Dark | Up | 45.7 | 215.5 | Up | 10:16:14 - 10:23:58 | 6674 |
| Yuma | 10:20:02 | -51.3 | Dark | Up | 45.6 | 216.9 | Up | 10:16:10 - 10:23:54 | 6658 |
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 523740, (2020/02/13 10:21UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 17.99 52 Alphard 09:27:35.2 -08:39:30 2.0 16.78 60 PPM 193464 10:28:44.0 -03:44:33 6.5 1.66 44 PPM 193533 10:33:14.8 -05:21:48 7.5 0.46 43 PPM 193551 10:33:55.9 -04:52:31 9.3 0.12 43 523740 10:33:28.6 -04:54:22 14.0 43 Positions are for J2000
Event circumstances last updated at 2019/10/15 22:08:38 UT
Marc W. Buie, Southwest Research Institute