Event between (523643) 10TY53 and star GA0900:00332859 with event index number of 1791860
Geocentric closest approach at 2027/12/21 06:06:02 UTC
J2000 position of star is 03:50:58.5 +00:27:23
Equinox of date position of star is 03:52:02.3 +00:31:03
Stellar brightness G=15.7,
use SENSEUP=128
Star is 129 degrees from the moon.
Moon is 40% illuminated.
TNO apparent brightness V=24.1
[RECON map]
TNO is 25.0 AU from the Sun
and 24.2 AU from the Earth.
The TNO is moving 20.1
km/sec on the sky relative to the star, or,
4.1 arcsec/hr.
The 1-sigma error in the time of the event is 512 seconds.
The 1-sigma cross-track error in the shadow position is
4937 km.
The sky-plane scale is
17544.0 km/arcsec.
The TNO has an absolute magnitude Hv=10.0
Diameter=436.5 km assuming a 5% albedo -- 3.0 sec chord
Diameter=178.2 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
Star training set for 523643, (2027/12/21 06:06UT) Object RA Dec mag sep mel Aldebaran 04:37:31.7 +16:33:49 0.8 19.50 120 Menkar 03:03:44.7 +04:11:52 2.5 12.69 142 PPM 146935 03:50:05.2 +00:18:43 5.9 0.62 130 PPM 175388 03:50:56.4 -00:16:21 8.5 0.89 130 PPM 175393 03:52:34.0 +00:03:05 9.6 0.49 129 PPM 146979 03:53:00.6 +00:24:53 11.6 0.19 129 523643 03:52:24.8 +00:32:21 15.7 129 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
1.8 sigma about the mid-time.
The median site spacing is 19.9 km
RECON observability=1.0 and success probability=4.2%
| 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 | 06:06:18 | -55.9 | Dark | Down | 40.1 | 185.4 | Up | 05:51:18 - 06:21:18 | 8522 |
| Kelowna | 06:06:18 | -56.0 | Dark | Down | 40.5 | 185.2 | Up | 05:51:18 - 06:21:18 | 8493 |
| Peachland | 06:06:19 | -56.0 | Dark | Down | 40.6 | 184.8 | Up | 05:51:19 - 06:21:19 | 8482 |
| Summerland | 06:06:19 | -56.1 | Dark | Down | 40.8 | 185.0 | Up | 05:51:19 - 06:21:19 | 8472 |
| Penticton | 06:06:18 | -56.2 | Dark | Down | 40.8 | 185.1 | Up | 05:51:18 - 06:21:18 | 8469 |
| Oliver | 06:06:18 | -56.4 | Dark | Down | 41.2 | 185.1 | Up | 05:51:18 - 06:21:18 | 8443 |
| Anarchist Mountain Observatory | 06:06:17 | -56.6 | Dark | Down | 41.3 | 185.4 | Up | 05:51:17 - 06:21:17 | 8433 |
| Tonasket | 06:06:18 | -56.8 | Dark | Down | 41.6 | 185.3 | Up | 05:51:18 - 06:21:18 | 8409 |
| Okanogan | 06:06:18 | -56.9 | Dark | Down | 42.0 | 185.2 | Up | 05:51:18 - 06:21:18 | 8383 |
| Brewster | 06:06:18 | -57.0 | Dark | Down | 42.3 | 184.9 | Up | 05:51:18 - 06:21:18 | 8362 |
| Victoria | 06:06:31 | -54.8 | Dark | Down | 41.9 | 180.1 | Up | 05:51:31 - 06:21:31 | 8360 |
| Manson/Chelan | 06:06:20 | -56.9 | Dark | Down | 42.5 | 184.4 | Up | 05:51:20 - 06:21:20 | 8343 |
| Entiat | 06:06:20 | -57.0 | Dark | Down | 42.7 | 184.4 | Up | 05:51:20 - 06:21:20 | 8326 |
| Wenatchee | 06:06:19 | -57.1 | Dark | Down | 43.0 | 184.2 | Up | 05:51:19 - 06:21:19 | 8306 |
| Ellensburg | 06:06:20 | -57.3 | Dark | Down | 43.4 | 184.0 | Up | 05:51:20 - 06:21:20 | 8273 |
| Yakima | 06:06:20 | -57.5 | Dark | Down | 43.8 | 184.0 | Up | 05:51:20 - 06:21:20 | 8242 |
| Pasco | 06:06:15 | -58.5 | Dark | Down | 44.0 | 186.0 | Up | 05:51:15 - 06:21:15 | 8229 |
| Toppenish/White Swan | 06:06:19 | -57.7 | Dark | Down | 44.0 | 184.2 | Up | 05:51:19 - 06:21:19 | 8227 |
| PNWRO | 06:06:13 | -58.8 | Dark | Down | 44.3 | 186.3 | Up | 05:51:13 - 06:21:13 | 8213 |
| Goldendale | 06:06:21 | -57.8 | Dark | Down | 44.6 | 183.7 | Up | 05:51:21 - 06:21:21 | 8180 |
| The Dalles | 06:06:22 | -57.7 | Dark | Down | 44.8 | 183.2 | Up | 05:51:22 - 06:21:22 | 8159 |
| Maupin | 06:06:21 | -58.0 | Dark | Down | 45.2 | 183.3 | Up | 05:51:21 - 06:21:21 | 8128 |
| Redmond | 06:06:21 | -58.4 | Dark | Down | 46.1 | 183.3 | Up | 05:51:21 - 06:21:21 | 8056 |
| Sisters | 06:06:22 | -58.2 | Dark | Down | 46.1 | 182.7 | Up | 05:51:22 - 06:21:22 | 8054 |
| Bend | 06:06:20 | -58.5 | Dark | Down | 46.4 | 183.1 | Up | 05:51:20 - 06:21:20 | 8038 |
| Oregon Observatory | 06:06:22 | -58.5 | Dark | Down | 46.5 | 182.9 | Up | 05:51:22 - 06:21:22 | 8023 |
| La Pine/Gilchrist | 06:06:22 | -58.5 | Dark | Down | 46.7 | 182.8 | Up | 05:51:22 - 06:21:22 | 8006 |
| North Lake | 06:06:19 | -59.1 | Dark | Down | 47.2 | 183.7 | Up | 05:51:19 - 06:21:19 | 7977 |
| Paisley | 06:06:18 | -59.6 | Dark | Down | 47.7 | 184.3 | Up | 05:51:18 - 06:21:18 | 7936 |
| Lakeview | 06:06:16 | -60.0 | Dark | Down | 48.2 | 184.6 | Up | 05:51:16 - 06:21:16 | 7896 |
| Klamath Falls | 06:06:22 | -59.1 | Dark | Down | 48.2 | 182.5 | Up | 05:51:22 - 06:21:22 | 7885 |
| Niwot | 06:05:13 | -69.9 | Dark | Down | 47.1 | 207.0 | Up | 05:50:13 - 06:20:13 | 7881 |
| SwRI | 06:05:13 | -69.9 | Dark | Down | 47.2 | 206.9 | Up | 05:50:13 - 06:20:13 | 7871 |
| Cedarville | 06:06:14 | -60.4 | Dark | Down | 48.8 | 184.9 | Up | 05:51:14 - 06:21:14 | 7844 |
| Fall River/Burney | 06:06:19 | -59.9 | Dark | Down | 49.4 | 183.1 | Up | 05:51:19 - 06:21:19 | 7791 |
| Susanville | 06:06:16 | -60.6 | Dark | Down | 50.0 | 184.3 | Up | 05:51:16 - 06:21:16 | 7746 |
| Gimple | 06:06:17 | -60.6 | Dark | Down | 50.3 | 184.0 | Up | 05:51:17 - 06:21:17 | 7720 |
| Greenville | 06:06:18 | -60.6 | Dark | Down | 50.3 | 183.9 | Up | 05:51:18 - 06:21:18 | 7719 |
| Quincy | 06:06:17 | -60.6 | Dark | Down | 50.5 | 183.9 | Up | 05:51:17 - 06:21:17 | 7702 |
| Portola | 06:06:15 | -61.0 | Dark | Down | 50.6 | 184.6 | Up | 05:51:15 - 06:21:15 | 7697 |
| Reno | 06:06:12 | -61.6 | Dark | Down | 50.8 | 185.7 | Up | 05:51:12 - 06:21:12 | 7681 |
| Carson City | 06:06:12 | -61.8 | Dark | Down | 51.1 | 185.7 | Up | 05:51:12 - 06:21:12 | 7650 |
| Yerington | 06:06:09 | -62.3 | Dark | Down | 51.3 | 186.8 | Up | 05:51:09 - 06:21:09 | 7640 |
| Gardnerville | 06:06:11 | -61.9 | Dark | Down | 51.4 | 185.8 | Up | 05:51:11 - 06:21:11 | 7630 |
| Hawthorne | 06:06:06 | -62.8 | Dark | Down | 51.7 | 187.7 | Up | 05:51:06 - 06:21:06 | 7606 |
| Tonopah | 06:05:59 | -64.0 | Dark | Down | 52.0 | 190.0 | Up | 05:50:59 - 06:20:59 | 7581 |
| Lee Vining | 06:06:08 | -62.7 | Dark | Down | 52.3 | 187.0 | Up | 05:51:08 - 06:21:08 | 7552 |
| Bishop | 06:06:04 | -63.5 | Dark | Down | 52.8 | 188.2 | Up | 05:51:04 - 06:21:04 | 7508 |
| Beatty | 06:05:57 | -64.9 | Dark | Down | 53.1 | 191.0 | Up | 05:50:57 - 06:20:57 | 7485 |
| Indian Springs | 06:05:52 | -65.8 | Dark | Down | 53.2 | 192.8 | Up | 05:50:52 - 06:20:52 | 7468 |
| Henderson | 06:05:48 | -66.5 | Dark | Down | 53.6 | 194.1 | Up | 05:50:48 - 06:20:48 | 7428 |
| Patrick | 06:05:42 | -67.6 | Dark | Down | 54.0 | 196.1 | Up | 05:50:42 - 06:20:42 | 7385 |
| Searchlight/Boulder City | 06:05:47 | -66.8 | Dark | Down | 54.1 | 194.4 | Up | 05:50:47 - 06:20:47 | 7378 |
| DCO | 06:05:39 | -68.2 | Dark | Down | 54.1 | 197.4 | Up | 05:50:39 - 06:20:39 | 7366 |
| Kingman/Dolan Springs | 06:05:44 | -67.5 | Dark | Down | 54.2 | 195.9 | Up | 05:50:44 - 06:20:44 | 7363 |
| Laughlin/Bullhead City | 06:05:45 | -67.2 | Dark | Down | 54.4 | 195.1 | Up | 05:50:45 - 06:20:45 | 7355 |
| Mohave Valley | 06:05:46 | -67.3 | Dark | Down | 54.6 | 195.2 | Up | 05:50:46 - 06:20:46 | 7330 |
| CPSLO | 06:06:13 | -62.6 | Dark | Down | 55.1 | 184.8 | Up | 05:51:13 - 06:21:13 | 7299 |
| Lake Havasu City | 06:05:43 | -67.6 | Dark | Down | 54.9 | 195.7 | Up | 05:50:43 - 06:20:43 | 7297 |
| Parker | 06:05:44 | -67.8 | Dark | Down | 55.3 | 195.9 | Up | 05:50:44 - 06:20:44 | 7266 |
| George/Scottsdale | 06:05:32 | -69.8 | Dark | Down | 55.1 | 200.2 | Up | 05:50:32 - 06:20:32 | 7255 |
| Blythe | 06:05:45 | -67.8 | Dark | Down | 55.8 | 195.6 | Up | 05:50:45 - 06:20:45 | 7215 |
| Wildwood | 06:06:03 | -64.5 | Dark | Down | 56.1 | 188.5 | Up | 05:51:03 - 06:21:03 | 7213 |
| Idyllwild | 06:05:54 | -66.1 | Dark | Down | 56.1 | 191.9 | Up | 05:50:54 - 06:20:54 | 7202 |
| Calipatria | 06:05:48 | -67.2 | Dark | Down | 56.5 | 194.2 | Up | 05:50:48 - 06:20:48 | 7159 |
| Yuma | 06:05:44 | -68.0 | Dark | Down | 56.7 | 195.9 | Up | 05:50:44 - 06:20:44 | 7129 |
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 523643, (2027/12/21 06:06UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 19.50 120 Menkar 03:02:16.8 +04:05:21 2.5 12.69 142 PPM 146935 03:48:39.0 +00:13:40 5.9 0.62 130 PPM 175388 03:49:30.5 -00:21:21 8.5 0.89 130 PPM 175393 03:51:08.0 -00:01:52 9.6 0.49 129 PPM 146979 03:51:34.3 +00:19:57 11.6 0.19 129 523643 03:50:58.5 +00:27:23 15.7 129 Positions are for J2000
Event circumstances last updated at 2020/09/05 22:16:09 UT
Marc W. Buie, Southwest Research Institute