Event between (523763) 14WZ509 and star GA0880:03714072 with event index number of 348261
Geocentric closest approach at 2020/01/05 10:30:41 UTC
J2000 position of star is 09:25:27.3 -01:05:10
Equinox of date position of star is 09:26:27.8 -01:10:20
Stellar brightness G=16.5,
use SENSEUP=128
Star is 103 degrees from the moon.
Moon is 71% illuminated.
TNO apparent brightness V=22.0
[RECON map]
TNO is 43.9 AU from the Sun
and 43.2 AU from the Earth.
The TNO is moving 19.8
km/sec on the sky relative to the star, or,
2.3 arcsec/hr.
The 1-sigma error in the time of the event is 174 seconds.
The 1-sigma cross-track error in the shadow position is
2061 km.
The sky-plane scale is
31331.8 km/arcsec.
The TNO has an absolute magnitude Hv=5.5
Diameter=478.6 km assuming a 5% albedo -- 24.2 sec chord
Diameter=195.4 km assuming a 30% albedo -- 9.9 sec chord
Dynamical classification is SCATEXTD
Star training set for 523763, (2020/01/05 10:31UT) Object RA Dec mag sep mel Regulus 10:09:26.1 +11:52:07 1.3 16.85 111 Alphard 09:28:34.3 -08:44:47 2.0 7.59 105 PPM 177884 09:30:25.2 -02:17:37 6.4 1.49 104 PPM 177857 09:27:05.0 -01:19:20 7.4 0.21 103 PPM 177850 09:26:10.4 -01:10:53 9.7 0.08 103 523763 09:26:28.5 -01:10:23 16.5 103 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 19.0 km
RECON observability=1.0 and success probability=8.5%
| 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 | 10:30:48 | -50.1 | Dark | Down | 38.6 | 182.0 | Up | 10:15:50 - 10:45:46 | 4438 |
| Kelowna | 10:30:49 | -50.3 | Dark | Down | 39.0 | 181.7 | Up | 10:15:51 - 10:45:47 | 4410 |
| Summerland | 10:30:50 | -50.6 | Dark | Down | 39.3 | 181.5 | Up | 10:15:52 - 10:45:48 | 4391 |
| Penticton | 10:30:49 | -50.5 | Dark | Down | 39.4 | 181.7 | Up | 10:15:51 - 10:45:47 | 4387 |
| Oliver | 10:30:49 | -50.7 | Dark | Down | 39.7 | 181.7 | Up | 10:15:51 - 10:45:47 | 4362 |
| Anarchist Mountain Observatory | 10:30:48 | -50.7 | Dark | Down | 39.9 | 181.9 | Up | 10:15:50 - 10:45:46 | 4351 |
| Tonasket | 10:30:48 | -50.9 | Dark | Down | 40.2 | 181.8 | Up | 10:15:50 - 10:45:46 | 4328 |
| Okanogan | 10:30:49 | -51.1 | Dark | Down | 40.5 | 181.6 | Up | 10:15:51 - 10:45:47 | 4304 |
| Victoria | 10:31:03 | -53.2 | Dark | Up | 40.3 | 176.7 | Up | 10:16:05 - 10:46:01 | 4302 |
| Brewster | 10:30:49 | -51.4 | Dark | Down | 40.8 | 181.4 | Up | 10:15:51 - 10:45:47 | 4283 |
| Manson/Chelan | 10:30:51 | -51.7 | Dark | Down | 41.0 | 180.9 | Up | 10:15:53 - 10:45:49 | 4267 |
| Entiat | 10:30:51 | -51.8 | Dark | Down | 41.2 | 180.8 | Up | 10:15:53 - 10:45:49 | 4251 |
| Wenatchee | 10:30:52 | -52.0 | Dark | Down | 41.5 | 180.7 | Up | 10:15:54 - 10:45:50 | 4232 |
| Ellensburg | 10:30:52 | -52.3 | Dark | Down | 41.9 | 180.4 | Up | 10:15:54 - 10:45:50 | 4201 |
| Yakima | 10:30:52 | -52.5 | Dark | Down | 42.3 | 180.4 | Up | 10:15:54 - 10:45:50 | 4170 |
| Toppenish/White Swan | 10:30:51 | -52.5 | Dark | Down | 42.5 | 180.6 | Up | 10:15:53 - 10:45:49 | 4155 |
| Pasco | 10:30:46 | -51.8 | Dark | Down | 42.6 | 182.3 | Up | 10:15:48 - 10:45:44 | 4150 |
| PNWRO | 10:30:45 | -51.8 | Dark | Down | 42.9 | 182.6 | Up | 10:15:47 - 10:45:43 | 4132 |
| Goldendale | 10:30:53 | -53.0 | Dark | Down | 43.1 | 180.0 | Up | 10:15:55 - 10:45:51 | 4111 |
| The Dalles | 10:30:55 | -53.4 | Dark | Down | 43.3 | 179.5 | Up | 10:15:57 - 10:45:53 | 4093 |
| Maupin | 10:30:54 | -53.5 | Dark | Down | 43.7 | 179.7 | Up | 10:15:56 - 10:45:52 | 4061 |
| Sisters | 10:30:56 | -54.2 | Dark | Down | 44.6 | 179.0 | Up | 10:15:58 - 10:45:54 | 3992 |
| Redmond | 10:30:54 | -53.9 | Dark | Down | 44.6 | 179.6 | Up | 10:15:56 - 10:45:52 | 3992 |
| Bend | 10:30:55 | -54.1 | Dark | Down | 44.9 | 179.4 | Up | 10:15:57 - 10:45:53 | 3974 |
| Oregon Observatory | 10:30:55 | -54.3 | Dark | Down | 45.0 | 179.2 | Up | 10:15:57 - 10:45:53 | 3960 |
| La Pine/Gilchrist | 10:30:55 | -54.4 | Dark | Down | 45.2 | 179.1 | Up | 10:15:57 - 10:45:53 | 3944 |
| North Lake | 10:30:53 | -54.2 | Dark | Down | 45.7 | 179.9 | Up | 10:15:55 - 10:45:51 | 3912 |
| Paisley | 10:30:52 | -54.2 | Dark | Down | 46.2 | 180.4 | Up | 10:15:54 - 10:45:50 | 3869 |
| Lakeview | 10:30:50 | -54.2 | Dark | Down | 46.7 | 180.7 | Up | 10:15:52 - 10:45:48 | 3830 |
| Klamath Falls | 10:30:56 | -55.2 | Dark | Down | 46.7 | 178.7 | Up | 10:15:58 - 10:45:54 | 3827 |
| Cedarville | 10:30:50 | -54.3 | Dark | Down | 47.4 | 181.0 | Up | 10:15:52 - 10:45:48 | 3777 |
| Fall River/Burney | 10:30:54 | -55.4 | Dark | Down | 47.9 | 179.2 | Up | 10:15:56 - 10:45:52 | 3732 |
| Niwot | 10:29:46 | -43.8 | Dark | Down | 46.5 | 202.7 | Up | 10:14:48 - 10:44:44 | 3716 |
| SwRI | 10:29:47 | -43.9 | Dark | Down | 46.6 | 202.6 | Up | 10:14:49 - 10:44:45 | 3706 |
| Susanville | 10:30:52 | -55.1 | Dark | Down | 48.5 | 180.3 | Up | 10:15:54 - 10:45:50 | 3683 |
| Gimple | 10:30:52 | -55.3 | Dark | Down | 48.8 | 180.0 | Up | 10:15:54 - 10:45:50 | 3659 |
| Greenville | 10:30:52 | -55.4 | Dark | Down | 48.8 | 179.8 | Up | 10:15:54 - 10:45:50 | 3659 |
| Quincy | 10:30:53 | -55.4 | Dark | Down | 49.0 | 179.9 | Up | 10:15:55 - 10:45:51 | 3642 |
| Portola | 10:30:50 | -55.1 | Dark | Down | 49.1 | 180.6 | Up | 10:15:52 - 10:45:48 | 3634 |
| Reno | 10:30:48 | -54.7 | Dark | Down | 49.4 | 181.6 | Up | 10:15:50 - 10:45:46 | 3614 |
| Carson City | 10:30:47 | -54.8 | Dark | Down | 49.7 | 181.6 | Up | 10:15:49 - 10:45:45 | 3584 |
| Yerington | 10:30:45 | -54.4 | Dark | Down | 49.9 | 182.6 | Up | 10:15:47 - 10:45:43 | 3570 |
| Gardnerville | 10:30:47 | -54.9 | Dark | Down | 50.0 | 181.7 | Up | 10:15:49 - 10:45:45 | 3563 |
| Hawthorne | 10:30:42 | -54.2 | Dark | Down | 50.3 | 183.4 | Up | 10:15:44 - 10:45:40 | 3533 |
| Tonopah | 10:30:36 | -53.2 | Dark | Down | 50.7 | 185.6 | Up | 10:15:38 - 10:45:34 | 3498 |
| Lee Vining | 10:30:44 | -54.7 | Dark | Down | 50.9 | 182.7 | Up | 10:15:46 - 10:45:42 | 3483 |
| Bishop | 10:30:41 | -54.3 | Dark | Down | 51.5 | 183.9 | Up | 10:15:43 - 10:45:39 | 3434 |
| Beatty | 10:30:33 | -53.1 | Dark | Down | 51.8 | 186.5 | Up | 10:15:35 - 10:45:31 | 3400 |
| Indian Springs | 10:30:28 | -52.3 | Dark | Down | 52.0 | 188.3 | Up | 10:15:30 - 10:45:26 | 3376 |
| Henderson | 10:30:25 | -51.9 | Dark | Down | 52.5 | 189.5 | Up | 10:15:27 - 10:45:23 | 3331 |
| Searchlight/Boulder City | 10:30:25 | -51.9 | Dark | Down | 53.0 | 189.7 | Up | 10:15:27 - 10:45:23 | 3281 |
| Patrick | 10:30:20 | -51.1 | Dark | Down | 52.9 | 191.4 | Up | 10:15:22 - 10:45:18 | 3280 |
| Kingman/Dolan Springs | 10:30:21 | -51.3 | Dark | Down | 53.2 | 191.2 | Up | 10:15:23 - 10:45:19 | 3260 |
| DCO | 10:30:16 | -50.6 | Dark | Down | 53.1 | 192.6 | Up | 10:15:18 - 10:45:14 | 3256 |
| Laughlin/Bullhead City | 10:30:23 | -51.7 | Dark | Down | 53.3 | 190.3 | Up | 10:15:25 - 10:45:21 | 3255 |
| CPSLO | 10:30:50 | -56.5 | Dark | Down | 53.6 | 180.3 | Up | 10:15:52 - 10:45:48 | 3243 |
| Mohave Valley | 10:30:23 | -51.7 | Dark | Down | 53.6 | 190.4 | Up | 10:15:25 - 10:45:21 | 3231 |
| Lake Havasu City | 10:30:21 | -51.6 | Dark | Down | 53.9 | 190.9 | Up | 10:15:23 - 10:45:19 | 3196 |
| Parker | 10:30:21 | -51.6 | Dark | Down | 54.3 | 191.1 | Up | 10:15:23 - 10:45:19 | 3165 |
| Wildwood | 10:30:41 | -55.1 | Dark | Down | 54.8 | 183.8 | Up | 10:15:43 - 10:45:39 | 3143 |
| George/Scottsdale | 10:30:10 | -49.6 | Dark | Down | 54.2 | 195.2 | Up | 10:15:12 - 10:45:08 | 3136 |
| Idyllwild | 10:30:32 | -53.6 | Dark | Down | 55.0 | 187.1 | Up | 10:15:34 - 10:45:30 | 3119 |
| Blythe | 10:30:23 | -51.9 | Dark | Down | 54.8 | 190.7 | Up | 10:15:25 - 10:45:21 | 3116 |
| Calipatria | 10:30:26 | -52.7 | Dark | Down | 55.4 | 189.2 | Up | 10:15:28 - 10:45:24 | 3067 |
| Yuma | 10:30:22 | -52.0 | Dark | Down | 55.7 | 190.9 | Up | 10:15:24 - 10:45:20 | 3032 |
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 523763, (2020/01/05 10:31UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 16.85 111 Alphard 09:27:35.2 -08:39:30 2.0 7.59 105 PPM 177884 09:29:24.3 -02:12:19 6.4 1.49 104 PPM 177857 09:26:03.8 -01:14:06 7.4 0.21 103 PPM 177850 09:25:09.2 -01:05:39 9.7 0.08 103 523763 09:25:27.3 -01:05:10 16.5 103 Positions are for J2000
Event circumstances last updated at 2019/10/15 22:04:03 UT
Marc W. Buie, Southwest Research Institute