Event between 10JJ124 and star GA0740:22928316 with event index number of 1092997
Geocentric closest approach at 2021/03/25 11:54:42 UTC
J2000 position of star is 18:44:25.1 -15:37:44
Equinox of date position of star is 18:45:37.5 -15:36:21
Stellar brightness G=15.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 138 degrees from the moon.
Moon is 86% illuminated.
TNO apparent brightness V=20.9
[RECON map]
TNO is 25.3 AU from the Sun
and 25.4 AU from the Earth.
The TNO is moving 12.7
km/sec on the sky relative to the star, or,
2.5 arcsec/hr.
The 1-sigma error in the time of the event is 422 seconds.
The 1-sigma cross-track error in the shadow position is
5039 km.
The sky-plane scale is
18402.8 km/arcsec.
The TNO has an absolute magnitude Hv=6.6
Diameter=284.5 km assuming a 5% albedo -- 22.5 sec chord
Diameter=116.1 km assuming a 30% albedo -- 9.2 sec chord
Dynamical classification is CENTAURS
Star training set for 10JJ124, (2021/03/25 11:55UT) Object RA Dec mag sep mel Antares 16:30:42.7 -26:28:38 0.9 33.18 109 Nunki 18:56:34.8 -26:16:07 2.0 10.96 141 PPM 235210 18:55:56.1 -15:34:30 4.8 2.48 140 PPM 234947 18:44:58.5 -15:15:04 8.4 0.39 138 PPM 234938 18:44:36.9 -15:41:22 9.3 0.26 138 10JJ124 18:45:38.1 -15:36:21 15.5 138 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
2.1 sigma about the mid-time.
The median site spacing is 10.3 km
RECON observability=0.6 and success probability=1.2%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Victoria | 11:57:22 | -21.0 | Dark | Up | 15.8 | 137.9 | Really Low | 11:42:22 - 12:12:22 | 10585 |
| Sisters | 11:57:01 | -21.9 | Dark | Up | 19.7 | 138.6 | Really Low | 11:42:01 - 12:12:01 | 10521 |
| La Pine/Gilchrist | 11:56:58 | -22.2 | Dark | Up | 20.2 | 138.5 | Low | 11:41:58 - 12:11:58 | 10515 |
| Oregon Observatory | 11:56:59 | -22.0 | Dark | Up | 20.1 | 138.6 | Low | 11:41:59 - 12:11:59 | 10514 |
| Klamath Falls | 11:56:47 | -23.0 | Dark | Up | 21.2 | 137.9 | Low | 11:41:47 - 12:11:47 | 10513 |
| The Dalles | 11:57:11 | -21.1 | Dark | Up | 19.0 | 139.3 | Really Low | 11:42:11 - 12:12:11 | 10513 |
| Bend | 11:57:02 | -21.9 | Dark | Up | 20.1 | 138.8 | Low | 11:42:02 - 12:12:02 | 10511 |
| Maupin | 11:57:10 | -21.2 | Dark | Up | 19.3 | 139.3 | Really Low | 11:42:10 - 12:12:10 | 10508 |
| Redmond | 11:57:03 | -21.7 | Dark | Up | 20.0 | 139.0 | Really Low | 11:42:03 - 12:12:03 | 10507 |
| Goldendale | 11:57:15 | -20.7 | Dark | Up | 19.0 | 139.7 | Really Low | 11:42:15 - 12:12:15 | 10502 |
| Ellensburg | 11:57:23 | -20.0 | Dark | Up | 18.2 | 140.2 | Really Low | 11:42:23 - 12:12:23 | 10495 |
| Yakima | 11:57:20 | -20.2 | Dark | Up | 18.5 | 140.1 | Really Low | 11:42:20 - 12:12:20 | 10495 |
| North Lake | 11:56:59 | -22.0 | Dark | Up | 20.9 | 138.9 | Low | 11:41:59 - 12:11:59 | 10491 |
| Toppenish/White Swan | 11:57:21 | -20.2 | Dark | Up | 18.7 | 140.2 | Really Low | 11:42:21 - 12:12:21 | 10489 |
| Wenatchee | 11:57:25 | -19.7 | Dark | Up | 18.0 | 140.5 | Really Low | 11:42:25 - 12:12:25 | 10488 |
| Fall River/Burney | 11:56:41 | -23.3 | Dark | Up | 22.2 | 137.9 | Low | 11:41:41 - 12:11:41 | 10487 |
| Manson/Chelan | 11:57:30 | -19.4 | Dark | Up | 17.7 | 140.8 | Really Low | 11:42:30 - 12:12:30 | 10483 |
| Paisley | 11:56:56 | -22.0 | Dark | Up | 21.4 | 139.1 | Low | 11:41:56 - 12:11:56 | 10473 |
| Brewster | 11:57:32 | -19.1 | Dark | Up | 17.7 | 141.2 | Really Low | 11:42:32 - 12:12:32 | 10471 |
| Peachland | 11:57:41 | -18.3 | Dark | Up | 16.4 | 141.5 | Really Low | 11:42:41 - 12:12:41 | 10468 |
| Summerland | 11:57:41 | -18.3 | Dark | Up | 16.6 | 141.6 | Really Low | 11:42:41 - 12:12:41 | 10465 |
| Okanogan | 11:57:34 | -18.8 | Dark | Up | 17.6 | 141.4 | Really Low | 11:42:34 - 12:12:34 | 10464 |
| Oliver | 11:57:41 | -18.4 | Dark | Up | 17.0 | 141.6 | Really Low | 11:42:41 - 12:12:41 | 10462 |
| Lakeview | 11:56:54 | -22.1 | Dark | Up | 21.9 | 139.1 | Low | 11:41:54 - 12:11:54 | 10462 |
| Penticton | 11:57:41 | -18.3 | Dark | Up | 16.7 | 141.7 | Really Low | 11:42:41 - 12:12:41 | 10462 |
| Greenville | 11:56:41 | -23.3 | Dark | Up | 23.1 | 138.0 | Low | 11:41:41 - 12:11:41 | 10460 |
| Tonasket | 11:57:38 | -18.6 | Dark | Up | 17.4 | 141.6 | Really Low | 11:42:38 - 12:12:38 | 10459 |
| Kelowna | 11:57:44 | -18.1 | Dark | Up | 16.5 | 141.8 | Really Low | 11:42:44 - 12:12:44 | 10458 |
| Quincy | 11:56:38 | -23.4 | Dark | Up | 23.3 | 137.9 | Low | 11:41:38 - 12:11:38 | 10457 |
| Anarchist Mountain Observatory | 11:57:39 | -18.4 | Dark | Up | 17.2 | 141.8 | Really Low | 11:42:39 - 12:12:39 | 10457 |
| Gimple | 11:56:41 | -23.3 | Dark | Up | 23.2 | 138.1 | Low | 11:41:41 - 12:11:41 | 10457 |
| Susanville | 11:56:41 | -23.0 | Dark | Up | 23.1 | 138.3 | Low | 11:41:41 - 12:11:41 | 10453 |
| Clarence Fulton | 11:57:46 | -17.8 | AT | Up | 16.2 | 142.1 | Really Low | 11:42:46 - 12:12:46 | 10452 |
| Cedarville | 11:56:52 | -22.2 | Dark | Up | 22.5 | 139.1 | Low | 11:41:52 - 12:11:52 | 10448 |
| Pasco | 11:57:24 | -19.5 | Dark | Up | 19.4 | 141.4 | Really Low | 11:42:24 - 12:12:24 | 10444 |
| Portola | 11:56:41 | -23.1 | Dark | Up | 23.6 | 138.3 | Low | 11:41:41 - 12:11:41 | 10438 |
| PNWRO | 11:57:23 | -19.4 | Dark | Up | 19.7 | 141.5 | Really Low | 11:42:23 - 12:12:23 | 10436 |
| Reno | 11:56:39 | -22.8 | Dark | Up | 24.1 | 138.8 | Low | 11:41:39 - 12:11:39 | 10409 |
| Carson City | 11:56:38 | -22.9 | Dark | Up | 24.4 | 138.7 | Low | 11:41:38 - 12:11:38 | 10403 |
| Gardnerville | 11:56:38 | -23.0 | Dark | Up | 24.6 | 138.7 | Low | 11:41:38 - 12:11:38 | 10398 |
| Yerington | 11:56:39 | -22.5 | Dark | Up | 24.9 | 139.3 | Low | 11:41:39 - 12:11:39 | 10375 |
| CPSLO | 11:56:13 | -25.1 | Dark | Up | 26.8 | 136.6 | Low | 11:41:13 - 12:11:13 | 10365 |
| Lee Vining | 11:56:38 | -22.9 | Dark | Up | 25.7 | 139.0 | Low | 11:41:38 - 12:11:38 | 10357 |
| Hawthorne | 11:56:39 | -22.3 | Dark | Up | 25.5 | 139.6 | Low | 11:41:39 - 12:11:39 | 10347 |
| Bishop | 11:56:34 | -22.6 | Dark | Up | 26.5 | 139.4 | Low | 11:41:34 - 12:11:34 | 10316 |
| Tonopah | 11:56:45 | -21.5 | Dark | Up | 26.6 | 140.8 | Low | 11:41:45 - 12:11:45 | 10281 |
| Wildwood | 11:56:12 | -24.0 | Dark | Up | 28.8 | 138.0 | Low | 11:41:12 - 12:11:12 | 10253 |
| Beatty | 11:56:39 | -21.5 | Dark | Up | 27.7 | 140.8 | Low | 11:41:39 - 12:11:39 | 10238 |
| Indian Springs | 11:56:41 | -20.8 | Dark | Up | 28.5 | 141.7 | Low | 11:41:41 - 12:11:41 | 10185 |
| Idyllwild | 11:56:20 | -22.6 | Dark | Up | 30.1 | 139.6 | Up | 11:41:20 - 12:11:20 | 10163 |
| Henderson | 11:56:41 | -20.5 | Dark | Up | 29.3 | 142.2 | Low | 11:41:41 - 12:11:41 | 10141 |
| Laughlin/Bullhead City | 11:56:38 | -20.4 | Dark | Up | 30.2 | 142.2 | Up | 11:41:38 - 12:11:38 | 10102 |
| Mohave Valley | 11:56:40 | -20.5 | Dark | Up | 30.4 | 142.2 | Up | 11:41:40 - 12:11:40 | 10095 |
| Calipatria | 11:56:22 | -21.9 | Dark | Up | 31.2 | 140.5 | Up | 11:41:22 - 12:11:22 | 10092 |
| Kingman/Dolan Springs | 11:56:44 | -20.0 | Dark | Up | 30.4 | 142.8 | Up | 11:41:44 - 12:11:44 | 10079 |
| Patrick | 11:56:41 | -19.8 | Dark | Up | 30.3 | 143.0 | Up | 11:41:41 - 12:11:41 | 10076 |
| Lake Havasu City | 11:56:38 | -20.4 | Dark | Up | 30.8 | 142.2 | Up | 11:41:38 - 12:11:38 | 10073 |
| Parker | 11:56:37 | -20.5 | Dark | Up | 31.1 | 142.1 | Up | 11:41:37 - 12:11:37 | 10063 |
| Blythe | 11:56:32 | -20.9 | Dark | Up | 31.4 | 141.6 | Up | 11:41:32 - 12:11:32 | 10063 |
| Yuma | 11:56:24 | -21.3 | Dark | Up | 32.0 | 141.2 | Up | 11:41:24 - 12:11:24 | 10039 |
| George/Scottsdale | 11:56:45 | -18.7 | Dark | Down | 32.7 | 144.4 | Up | 11:41:45 - 12:11:45 | 9935 |
| Dunrhomin | 11:57:59 | -11.7 | NT | Down | 30.0 | 153.6 | Low | 11:42:59 - 12:12:59 | 9770 |
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 10JJ124, (2021/03/25 11:55UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 33.18 109 Nunki 18:55:15.9 -26:17:49 2.0 10.96 141 PPM 235210 18:54:43.1 -15:36:12 4.8 2.48 140 PPM 234947 18:43:45.6 -15:16:26 8.4 0.39 138 PPM 234938 18:43:23.8 -15:42:43 9.3 0.26 138 10JJ124 18:44:25.1 -15:37:44 15.5 138 Positions are for J2000
Event circumstances last updated at 2021/01/19 21:32:17 UT
Marc W. Buie, Southwest Research Institute