Event between 13NL24 and star GA0800:21810668 with event index number of 1167429
Geocentric closest approach at 2021/07/24 07:56:00 UTC
J2000 position of star is 22:59:24.2 -08:17:54
Equinox of date position of star is 23:00:30.7 -08:11:01
Stellar brightness G=16.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 38 degrees from the moon.
Moon is 100% illuminated.
TNO apparent brightness V=22.6
[RECON map]
TNO is 27.3 AU from the Sun
and 26.5 AU from the Earth.
The TNO is moving 15.7
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 175 seconds.
The 1-sigma cross-track error in the shadow position is
2123 km.
The sky-plane scale is
19206.9 km/arcsec.
The TNO has an absolute magnitude Hv=8.2
Diameter=136.1 km assuming a 5% albedo -- 8.7 sec chord
Diameter=55.6 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is CENTAURR
Star training set for 13NL24, (2021/07/24 07:56UT) Object RA Dec mag sep mel Fomalhaut 22:58:50.2 -29:30:27 1.2 21.33 33 81 Aqr 23:02:30.8 -06:56:42 6.1 1.33 39 PPM 207028 23:01:27.4 -08:45:53 7.1 0.63 38 PPM 206999 23:00:07.0 -08:05:51 8.7 0.13 38 13NL24 23:00:31.5 -08:10:56 16.4 39 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
5.2 sigma about the mid-time.
The median site spacing is 12.6 km
RECON observability=1.0 and success probability=0.2%
| 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 | 07:56:34 | -19.9 | Dark | Up | 20.7 | 134.1 | Low | 07:41:34 - 08:11:34 | 9415 |
| Victoria | 07:56:55 | -21.5 | Dark | Up | 19.9 | 129.9 | Really Low | 07:41:55 - 08:11:55 | 9407 |
| Peachland | 07:56:41 | -20.4 | Dark | Up | 20.9 | 133.6 | Low | 07:41:41 - 08:11:41 | 9404 |
| Kelowna | 07:56:38 | -20.3 | Dark | Up | 20.9 | 133.9 | Low | 07:41:38 - 08:11:38 | 9403 |
| Summerland | 07:56:41 | -20.6 | Dark | Up | 21.0 | 133.6 | Low | 07:41:41 - 08:11:41 | 9397 |
| Penticton | 07:56:41 | -20.7 | Dark | Up | 21.1 | 133.7 | Low | 07:41:41 - 08:11:41 | 9393 |
| Oliver | 07:56:42 | -21.0 | Dark | Up | 21.4 | 133.6 | Low | 07:41:42 - 08:11:42 | 9381 |
| Anarchist Mountain Observatory | 07:56:41 | -21.2 | Dark | Up | 21.6 | 133.7 | Low | 07:41:41 - 08:11:41 | 9372 |
| Tonasket | 07:56:44 | -21.5 | Dark | Up | 21.7 | 133.6 | Low | 07:41:44 - 08:11:44 | 9361 |
| Okanogan | 07:56:46 | -21.8 | Dark | Up | 21.9 | 133.4 | Low | 07:41:46 - 08:11:46 | 9351 |
| Brewster | 07:56:49 | -22.1 | Dark | Up | 22.0 | 133.1 | Low | 07:41:49 - 08:11:49 | 9343 |
| Manson/Chelan | 07:56:50 | -22.3 | Dark | Up | 22.0 | 132.7 | Low | 07:41:50 - 08:11:50 | 9341 |
| Wenatchee | 07:56:53 | -22.8 | Dark | Up | 22.2 | 132.4 | Low | 07:41:53 - 08:11:53 | 9325 |
| Ellensburg | 07:56:57 | -23.2 | Dark | Up | 22.4 | 132.1 | Low | 07:41:57 - 08:11:57 | 9312 |
| Yakima | 07:56:59 | -23.6 | Dark | Up | 22.7 | 132.0 | Low | 07:41:59 - 08:11:59 | 9295 |
| Toppenish/White Swan | 07:56:59 | -23.8 | Dark | Up | 22.9 | 132.1 | Low | 07:41:59 - 08:11:59 | 9284 |
| Goldendale | 07:57:02 | -24.3 | Dark | Up | 23.0 | 131.5 | Low | 07:42:02 - 08:12:02 | 9268 |
| The Dalles | 07:57:04 | -24.5 | Dark | Up | 23.0 | 131.1 | Low | 07:42:04 - 08:12:04 | 9263 |
| Pasco | 07:56:55 | -23.9 | Dark | Up | 23.6 | 133.2 | Low | 07:41:55 - 08:11:55 | 9260 |
| PNWRO | 07:56:55 | -24.2 | Dark | Up | 23.9 | 133.3 | Low | 07:41:55 - 08:11:55 | 9247 |
| Maupin | 07:57:08 | -25.0 | Dark | Up | 23.3 | 131.1 | Low | 07:42:08 - 08:12:08 | 9244 |
| Sisters | 07:57:09 | -25.8 | Dark | Up | 23.6 | 130.3 | Low | 07:42:09 - 08:12:09 | 9213 |
| Redmond | 07:57:09 | -25.9 | Dark | Up | 23.9 | 130.7 | Low | 07:42:09 - 08:12:09 | 9207 |
| Bend | 07:57:09 | -26.1 | Dark | Up | 23.9 | 130.5 | Low | 07:42:09 - 08:12:09 | 9199 |
| Oregon Observatory | 07:57:09 | -26.2 | Dark | Up | 24.0 | 130.3 | Low | 07:42:09 - 08:12:09 | 9194 |
| La Pine/Gilchrist | 07:57:09 | -26.4 | Dark | Up | 24.1 | 130.2 | Low | 07:42:09 - 08:12:09 | 9186 |
| North Lake | 07:57:09 | -26.9 | Dark | Up | 24.7 | 130.6 | Low | 07:42:09 - 08:12:09 | 9157 |
| Chiloquin | 07:57:09 | -27.5 | Dark | Up | 24.6 | 129.5 | Low | 07:42:09 - 08:12:09 | 9141 |
| Paisley | 07:57:09 | -27.5 | Dark | Up | 25.3 | 130.7 | Low | 07:42:09 - 08:12:09 | 9126 |
| Klamath Falls | 07:57:09 | -27.9 | Dark | Up | 24.9 | 129.4 | Low | 07:42:09 - 08:12:09 | 9124 |
| Lakeview | 07:57:09 | -28.0 | Dark | Up | 25.7 | 130.7 | Low | 07:42:09 - 08:12:09 | 9099 |
| Cedarville | 07:57:09 | -28.6 | Dark | Up | 26.2 | 130.6 | Low | 07:42:09 - 08:12:09 | 9065 |
| Fall River/Burney | 07:57:09 | -29.1 | Dark | Up | 25.8 | 129.4 | Low | 07:42:09 - 08:12:09 | 9063 |
| Susanville | 07:57:09 | -29.7 | Dark | Up | 26.7 | 129.8 | Low | 07:42:09 - 08:12:09 | 9020 |
| Greenville | 07:57:09 | -30.0 | Dark | Up | 26.7 | 129.4 | Low | 07:42:09 - 08:12:09 | 9012 |
| Gimple | 07:57:09 | -30.0 | Dark | Up | 26.7 | 129.5 | Low | 07:42:09 - 08:12:09 | 9010 |
| Quincy | 07:57:09 | -30.2 | Dark | Up | 26.8 | 129.3 | Low | 07:42:09 - 08:12:09 | 9002 |
| Portola | 07:57:09 | -30.3 | Dark | Up | 27.2 | 129.7 | Low | 07:42:09 - 08:12:09 | 8987 |
| Reno | 07:57:09 | -30.6 | Dark | Up | 27.7 | 130.2 | Low | 07:42:09 - 08:12:09 | 8962 |
| Carson City | 07:57:09 | -31.0 | Dark | Up | 28.0 | 130.1 | Low | 07:42:09 - 08:12:09 | 8944 |
| Gardnerville | 07:57:09 | -31.2 | Dark | Up | 28.1 | 130.0 | Low | 07:42:09 - 08:12:09 | 8930 |
| Yerington | 07:57:09 | -31.2 | Dark | Up | 28.5 | 130.6 | Low | 07:42:09 - 08:12:09 | 8922 |
| Hawthorne | 07:57:09 | -31.7 | Dark | Up | 29.1 | 130.8 | Low | 07:42:09 - 08:12:09 | 8887 |
| Lee Vining | 07:57:09 | -32.2 | Dark | Up | 29.2 | 130.2 | Low | 07:42:09 - 08:12:09 | 8868 |
| Tonopah | 07:57:09 | -32.1 | Dark | Up | 30.2 | 131.9 | Up | 07:42:09 - 08:12:09 | 8835 |
| Bishop | 07:57:09 | -32.8 | Dark | Up | 30.0 | 130.6 | Low | 07:42:09 - 08:12:09 | 8821 |
| Beatty | 07:57:09 | -33.3 | Dark | Up | 31.3 | 131.8 | Up | 07:42:09 - 08:12:09 | 8762 |
| CPSLO | 07:57:53 | -34.8 | Dark | Up | 30.0 | 127.8 | Low | 07:42:53 - 08:12:53 | 8731 |
| Indian Springs | 07:57:09 | -33.6 | Dark | Up | 32.1 | 132.7 | Up | 07:42:09 - 08:12:09 | 8721 |
| Dunrhomin | 07:56:26 | -28.9 | Dark | Up | 34.7 | 144.8 | Up | 07:41:26 - 08:11:26 | 8703 |
| Henderson | 07:57:09 | -34.1 | Dark | Up | 32.9 | 133.1 | Up | 07:42:09 - 08:12:09 | 8675 |
| Wildwood | 07:57:49 | -36.1 | Dark | Up | 32.0 | 129.0 | Up | 07:42:49 - 08:12:49 | 8622 |
| Laughlin/Bullhead City | 07:57:09 | -35.0 | Dark | Up | 33.7 | 133.1 | Up | 07:42:09 - 08:12:09 | 8615 |
| Patrick | 07:57:09 | -34.7 | Dark | Up | 34.0 | 133.9 | Up | 07:42:09 - 08:12:09 | 8614 |
| Kingman/Dolan Springs | 07:57:09 | -34.9 | Dark | Up | 34.0 | 133.6 | Up | 07:42:09 - 08:12:09 | 8605 |
| Mohave Valley | 07:57:09 | -35.2 | Dark | Up | 33.9 | 132.9 | Up | 07:42:09 - 08:12:09 | 8599 |
| Lake Havasu City | 07:57:09 | -35.6 | Dark | Up | 34.4 | 133.0 | Up | 07:42:09 - 08:12:09 | 8570 |
| Idyllwild | 07:57:43 | -36.5 | Dark | Up | 33.5 | 130.5 | Up | 07:42:43 - 08:12:43 | 8565 |
| Parker | 07:57:09 | -36.0 | Dark | Up | 34.6 | 132.8 | Up | 07:42:09 - 08:12:09 | 8548 |
| Blythe | 07:57:09 | -36.5 | Dark | Up | 34.8 | 132.3 | Up | 07:42:09 - 08:12:09 | 8523 |
| Calipatria | 07:57:41 | -37.0 | Dark | Up | 34.6 | 131.3 | Up | 07:42:41 - 08:12:41 | 8501 |
| Yuma | 07:57:09 | -37.4 | Dark | Up | 35.4 | 131.8 | Up | 07:42:09 - 08:12:09 | 8468 |
| George/Scottsdale | 07:57:09 | -36.2 | Dark | Up | 36.4 | 135.0 | Up | 07:42:09 - 08:12:09 | 8465 |
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 13NL24, (2021/07/24 07:56UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 21.33 33 81 Aqr 23:01:23.6 -07:03:40 6.1 1.33 39 PPM 207028 23:00:20.0 -08:52:50 7.1 0.63 38 PPM 206999 22:58:59.7 -08:12:48 8.7 0.13 38 13NL24 22:59:24.2 -08:17:54 16.4 38 Positions are for J2000
Event circumstances last updated at 2021/04/21 22:33:09 UT
Marc W. Buie, Southwest Research Institute