Event between 11HF103 and star GA0680:34782124 with event index number of 1095795
Geocentric closest approach at 2021/07/28 09:03:45 UTC
J2000 position of star is 19:19:52.0 -20:00:26
Equinox of date position of star is 19:21:07.1 -19:57:59
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 71 degrees from the moon.
Moon is 79% illuminated.
TNO apparent brightness V=24.8
[RECON map]
TNO is 43.3 AU from the Sun
and 42.3 AU from the Earth.
The TNO is moving 23.5
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 693 seconds.
The 1-sigma cross-track error in the shadow position is
2642 km.
The sky-plane scale is
30687.6 km/arcsec.
The TNO has an absolute magnitude Hv=8.4
Diameter=123.0 km assuming a 5% albedo -- 5.2 sec chord
Diameter=50.2 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CLASSICAL
Star training set for 11HF103, (2021/07/28 09:04UT) Object RA Dec mag sep mel Antares 16:30:44.0 -26:28:41 0.9 39.51 109 Nunki 18:56:36.1 -26:16:05 2.0 8.45 77 43 Sgr 19:18:53.7 -18:54:46 4.9 1.18 72 PPM 269595 19:19:37.6 -20:24:14 8.3 0.56 71 PPM 235847 19:21:21.9 -19:51:54 9.6 0.11 71 11HF103 19:21:08.2 -19:57:57 16.8 71 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
1.3 sigma about the mid-time.
The median site spacing is 20.2 km
RECON observability=0.6 and success probability=9.2%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Victoria | 09:01:44 | -22.0 | Dark | Up | 17.0 | 207.8 | Really Low | 08:46:44 - 09:16:44 | 2594 |
| Clarence Fulton | 09:01:35 | -19.7 | Dark | Up | 14.1 | 211.3 | Really Low | 08:46:35 - 09:16:35 | 2588 |
| Peachland | 09:01:36 | -20.2 | Dark | Up | 14.7 | 210.9 | Really Low | 08:46:36 - 09:16:36 | 2574 |
| Kelowna | 09:01:36 | -20.1 | Dark | Up | 14.5 | 211.2 | Really Low | 08:46:36 - 09:16:36 | 2573 |
| Summerland | 09:01:36 | -20.4 | Dark | Up | 14.8 | 211.0 | Really Low | 08:46:36 - 09:16:36 | 2565 |
| Penticton | 09:01:35 | -20.4 | Dark | Up | 14.8 | 211.1 | Really Low | 08:46:35 - 09:16:35 | 2559 |
| Oliver | 09:01:34 | -20.8 | Dark | Up | 15.1 | 211.2 | Really Low | 08:46:34 - 09:16:34 | 2541 |
| Anarchist Mountain Observatory | 09:01:33 | -20.9 | Dark | Up | 15.2 | 211.4 | Really Low | 08:46:33 - 09:16:33 | 2529 |
| Tonasket | 09:01:33 | -21.2 | Dark | Up | 15.5 | 211.3 | Really Low | 08:46:33 - 09:16:33 | 2514 |
| Okanogan | 09:01:33 | -21.6 | Dark | Up | 15.9 | 211.3 | Really Low | 08:46:33 - 09:16:33 | 2500 |
| Brewster | 09:01:33 | -21.9 | Dark | Up | 16.2 | 211.1 | Really Low | 08:46:33 - 09:16:33 | 2491 |
| Manson/Chelan | 09:01:34 | -22.1 | Dark | Up | 16.5 | 210.8 | Really Low | 08:46:34 - 09:16:34 | 2489 |
| Wenatchee | 09:01:34 | -22.6 | Dark | Up | 16.9 | 210.7 | Really Low | 08:46:34 - 09:16:34 | 2468 |
| Ellensburg | 09:01:34 | -23.0 | Dark | Up | 17.4 | 210.6 | Really Low | 08:46:34 - 09:16:34 | 2451 |
| Yakima | 09:01:34 | -23.4 | Dark | Up | 17.7 | 210.6 | Really Low | 08:46:34 - 09:16:34 | 2429 |
| Toppenish/White Swan | 09:01:33 | -23.6 | Dark | Up | 17.8 | 210.8 | Really Low | 08:46:33 - 09:16:33 | 2414 |
| Goldendale | 09:01:33 | -24.2 | Dark | Up | 18.5 | 210.5 | Really Low | 08:46:33 - 09:16:33 | 2394 |
| The Dalles | 09:01:34 | -24.5 | Dark | Up | 18.8 | 210.2 | Really Low | 08:46:34 - 09:16:34 | 2390 |
| Pasco | 09:01:29 | -23.5 | Dark | Up | 17.5 | 212.0 | Really Low | 08:46:29 - 09:16:29 | 2377 |
| Maupin | 09:01:33 | -24.9 | Dark | Up | 19.1 | 210.4 | Really Low | 08:46:33 - 09:16:33 | 2364 |
| PNWRO | 09:01:28 | -23.7 | Dark | Up | 17.6 | 212.2 | Really Low | 08:46:28 - 09:16:28 | 2358 |
| Sisters | 09:01:33 | -25.8 | Dark | Up | 20.1 | 210.1 | Low | 08:46:33 - 09:16:33 | 2327 |
| Redmond | 09:01:32 | -25.8 | Dark | Up | 19.9 | 210.5 | Really Low | 08:46:32 - 09:16:32 | 2316 |
| Bend | 09:01:32 | -26.0 | Dark | Up | 20.2 | 210.4 | Low | 08:46:32 - 09:16:32 | 2307 |
| Oregon Observatory | 09:01:32 | -26.2 | Dark | Up | 20.4 | 210.3 | Low | 08:46:32 - 09:16:32 | 2300 |
| La Pine/Gilchrist | 09:01:32 | -26.4 | Dark | Up | 20.6 | 210.3 | Low | 08:46:32 - 09:16:32 | 2290 |
| North Lake | 09:01:30 | -26.8 | Dark | Up | 20.7 | 210.9 | Low | 08:46:30 - 09:16:30 | 2250 |
| Chiloquin | 09:01:31 | -27.6 | Dark | Up | 21.7 | 210.2 | Low | 08:46:31 - 09:16:31 | 2233 |
| Klamath Falls | 09:01:31 | -27.9 | Dark | Up | 21.9 | 210.3 | Low | 08:46:31 - 09:16:31 | 2210 |
| Paisley | 09:01:28 | -27.2 | Dark | Up | 21.1 | 211.4 | Low | 08:46:28 - 09:16:28 | 2208 |
| Lakeview | 09:01:27 | -27.7 | Dark | Up | 21.4 | 211.6 | Low | 08:46:27 - 09:16:27 | 2172 |
| Fall River/Burney | 09:01:29 | -29.0 | Dark | Up | 22.8 | 210.9 | Low | 08:46:29 - 09:16:29 | 2128 |
| Cedarville | 09:01:26 | -28.3 | Dark | Up | 21.9 | 211.9 | Low | 08:46:26 - 09:16:26 | 2128 |
| Susanville | 09:01:26 | -29.5 | Dark | Up | 23.0 | 211.7 | Low | 08:46:26 - 09:16:26 | 2070 |
| Greenville | 09:01:26 | -29.8 | Dark | Up | 23.4 | 211.5 | Low | 08:46:26 - 09:16:26 | 2060 |
| Gimple | 09:01:26 | -29.8 | Dark | Up | 23.4 | 211.6 | Low | 08:46:26 - 09:16:26 | 2058 |
| Quincy | 09:01:26 | -30.0 | Dark | Up | 23.6 | 211.6 | Low | 08:46:26 - 09:16:26 | 2047 |
| Portola | 09:01:25 | -30.0 | Dark | Up | 23.5 | 212.0 | Low | 08:46:25 - 09:16:25 | 2027 |
| Reno | 09:01:23 | -30.1 | Dark | Up | 23.4 | 212.7 | Low | 08:46:23 - 09:16:23 | 1993 |
| Carson City | 09:01:22 | -30.5 | Dark | Up | 23.7 | 212.8 | Low | 08:46:22 - 09:16:22 | 1969 |
| Gardnerville | 09:01:22 | -30.7 | Dark | Up | 23.9 | 212.9 | Low | 08:46:22 - 09:16:22 | 1951 |
| Yerington | 09:01:20 | -30.5 | Dark | Up | 23.6 | 213.4 | Low | 08:46:20 - 09:16:20 | 1939 |
| Hawthorne | 09:01:18 | -30.9 | Dark | Up | 23.8 | 214.0 | Low | 08:46:18 - 09:16:18 | 1894 |
| Lee Vining | 09:01:18 | -31.5 | Dark | Up | 24.5 | 213.7 | Low | 08:46:18 - 09:16:18 | 1870 |
| Tonopah | 09:01:13 | -31.0 | Dark | Up | 23.6 | 215.4 | Low | 08:46:13 - 09:16:13 | 1824 |
| Bishop | 09:01:15 | -31.9 | Dark | Up | 24.7 | 214.5 | Low | 08:46:15 - 09:16:15 | 1809 |
| Beatty | 09:01:10 | -32.0 | Dark | Up | 24.3 | 216.1 | Low | 08:46:10 - 09:16:10 | 1730 |
| CPSLO | 09:01:20 | -34.4 | Dark | Up | 27.4 | 213.0 | Low | 08:46:20 - 09:16:20 | 1727 |
| Indian Springs | 09:01:07 | -32.0 | Dark | Up | 24.0 | 217.1 | Low | 08:46:07 - 09:16:07 | 1677 |
| Dunrhomin | 09:00:45 | -25.2 | Dark | Up | 15.9 | 225.0 | Really Low | 08:45:45 - 09:15:45 | 1627 |
| Henderson | 09:01:04 | -32.3 | Dark | Up | 24.1 | 217.8 | Low | 08:46:04 - 09:16:04 | 1618 |
| Wildwood | 09:01:13 | -35.1 | Dark | Up | 27.4 | 215.2 | Low | 08:46:13 - 09:16:13 | 1583 |
| Laughlin/Bullhead City | 09:01:02 | -33.0 | Dark | Up | 24.6 | 218.4 | Low | 08:46:02 - 09:16:02 | 1543 |
| Patrick | 09:01:00 | -32.6 | Dark | Up | 24.1 | 219.0 | Low | 08:46:00 - 09:16:00 | 1540 |
| Kingman/Dolan Springs | 09:01:01 | -32.8 | Dark | Up | 24.3 | 218.9 | Low | 08:46:01 - 09:16:01 | 1530 |
| Mohave Valley | 09:01:02 | -33.2 | Dark | Up | 24.8 | 218.5 | Low | 08:46:02 - 09:16:02 | 1523 |
| Idyllwild | 09:01:07 | -35.0 | Dark | Up | 26.8 | 217.0 | Low | 08:46:07 - 09:16:07 | 1502 |
| Lake Havasu City | 09:01:00 | -33.5 | Dark | Up | 25.0 | 218.8 | Low | 08:46:00 - 09:16:00 | 1486 |
| Parker | 09:01:00 | -33.9 | Dark | Up | 25.3 | 219.0 | Low | 08:46:00 - 09:16:00 | 1459 |
| Blythe | 09:01:00 | -34.4 | Dark | Up | 25.8 | 218.9 | Low | 08:46:00 - 09:16:00 | 1429 |
| Calipatria | 09:01:02 | -35.2 | Dark | Up | 26.7 | 218.2 | Low | 08:46:02 - 09:16:02 | 1420 |
| Yuma | 09:00:59 | -35.3 | Dark | Up | 26.6 | 219.1 | Low | 08:45:59 - 09:15:59 | 1361 |
| George/Scottsdale | 09:00:52 | -33.5 | Dark | Up | 24.3 | 221.2 | Low | 08:45:52 - 09:15:52 | 1354 |
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 11HF103, (2021/07/28 09:04UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 39.51 109 Nunki 18:55:15.9 -26:17:49 2.0 8.45 77 43 Sgr 19:17:38.1 -18:57:11 4.9 1.18 72 PPM 269595 19:18:21.2 -20:26:40 8.3 0.56 71 PPM 235847 19:20:05.8 -19:54:23 9.6 0.11 71 11HF103 19:19:52.0 -20:00:26 16.8 71 Positions are for J2000
Event circumstances last updated at 2021/04/08 23:42:13 UT
Marc W. Buie, Southwest Research Institute