Event between 04KC19 and star GA0700:29345005 with event index number of 1450084
Geocentric closest approach at 2025/07/31 06:29:13 UTC
J2000 position of star is 18:45:42.0 -19:11:28
Equinox of date position of star is 18:46:54.5 -19:10:06
Stellar brightness G=13.3,
use SENSEUP=32
Star is 77 degrees from the moon.
Moon is 38% illuminated.
TNO apparent brightness V=25.0
[RECON map]
TNO is 31.0 AU from the Sun
and 30.1 AU from the Earth.
The TNO is moving 20.2
km/sec on the sky relative to the star, or,
3.3 arcsec/hr.
The 1-sigma error in the time of the event is 1474 seconds.
The 1-sigma cross-track error in the shadow position is
4599 km.
The sky-plane scale is
21845.3 km/arcsec.
The TNO has an absolute magnitude Hv=10.0
Diameter=121.3 km assuming a 5% albedo -- 3.0 sec chord
Diameter=49.5 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is 3:2E
Star training set for 04KC19, (2025/07/31 06:29UT) Object RA Dec mag sep mel Antares 16:30:58.8 -26:29:11 0.9 32.13 45 Nunki 18:56:51.0 -26:15:45 2.0 7.44 78 PPM 234997 18:47:31.7 -19:34:39 6.3 0.42 77 PPM 234996 18:47:26.3 -19:03:13 8.3 0.12 77 04KC19 18:47:12.3 -19:09:45 13.3 77 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
0.6 sigma about the mid-time.
The median site spacing is 13.0 km
RECON observability=1.0 and success probability=6.2%
| 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 | 06:28:24 | -18.4 | Dark | Down | 20.4 | 185.5 | Low | 06:13:24 - 06:43:24 | 1787 |
| Kelowna | 06:28:25 | -18.7 | Dark | Down | 20.8 | 185.4 | Low | 06:13:25 - 06:43:25 | 1773 |
| Peachland | 06:28:26 | -18.8 | Dark | Down | 20.9 | 185.1 | Low | 06:13:26 - 06:43:26 | 1772 |
| Summerland | 06:28:25 | -18.9 | Dark | Down | 21.1 | 185.2 | Low | 06:13:25 - 06:43:25 | 1765 |
| Penticton | 06:28:25 | -19.0 | Dark | Down | 21.1 | 185.3 | Low | 06:13:25 - 06:43:25 | 1761 |
| Victoria | 06:28:38 | -18.8 | Dark | Down | 22.3 | 181.5 | Low | 06:13:38 - 06:43:38 | 1752 |
| Oliver | 06:28:25 | -19.3 | Dark | Down | 21.5 | 185.3 | Low | 06:13:25 - 06:43:25 | 1746 |
| Anarchist Mountain Observatory | 06:28:24 | -19.5 | Dark | Down | 21.6 | 185.5 | Low | 06:13:24 - 06:43:24 | 1738 |
| Tonasket | 06:28:25 | -19.8 | Dark | Down | 21.9 | 185.5 | Low | 06:13:25 - 06:43:25 | 1725 |
| Okanogan | 06:28:25 | -20.1 | Dark | Down | 22.3 | 185.3 | Low | 06:13:25 - 06:43:25 | 1712 |
| Brewster | 06:28:26 | -20.3 | Dark | Down | 22.6 | 185.1 | Low | 06:13:26 - 06:43:26 | 1702 |
| Manson/Chelan | 06:28:27 | -20.3 | Dark | Down | 22.8 | 184.8 | Low | 06:13:27 - 06:43:27 | 1697 |
| Entiat | 06:28:27 | -20.5 | Dark | Down | 23.0 | 184.7 | Low | 06:13:27 - 06:43:27 | 1687 |
| Wenatchee | 06:28:28 | -20.7 | Dark | Down | 23.3 | 184.6 | Low | 06:13:28 - 06:43:28 | 1677 |
| Ellensburg | 06:28:28 | -21.0 | Dark | Down | 23.7 | 184.4 | Low | 06:13:28 - 06:43:28 | 1661 |
| Yakima | 06:28:28 | -21.4 | Dark | Down | 24.1 | 184.4 | Low | 06:13:28 - 06:43:28 | 1642 |
| Toppenish/White Swan | 06:28:28 | -21.6 | Dark | Down | 24.3 | 184.6 | Low | 06:13:28 - 06:43:28 | 1631 |
| Pasco | 06:28:23 | -22.1 | Dark | Down | 24.4 | 185.9 | Low | 06:13:23 - 06:43:23 | 1612 |
| Goldendale | 06:28:29 | -22.0 | Dark | Down | 24.9 | 184.2 | Low | 06:13:29 - 06:43:29 | 1609 |
| The Dalles | 06:28:31 | -22.1 | Dark | Down | 25.1 | 183.8 | Low | 06:13:31 - 06:43:31 | 1601 |
| PNWRO | 06:28:22 | -22.4 | Dark | Down | 24.6 | 186.1 | Low | 06:13:22 - 06:43:22 | 1598 |
| Maupin | 06:28:30 | -22.5 | Dark | Down | 25.5 | 183.9 | Low | 06:13:30 - 06:43:30 | 1580 |
| Sisters | 06:28:32 | -23.1 | Dark | Down | 26.4 | 183.4 | Low | 06:13:32 - 06:43:32 | 1543 |
| Redmond | 06:28:31 | -23.3 | Dark | Down | 26.4 | 183.9 | Low | 06:13:31 - 06:43:31 | 1537 |
| Bend | 06:28:31 | -23.4 | Dark | Down | 26.7 | 183.7 | Low | 06:13:31 - 06:43:31 | 1528 |
| Oregon Observatory | 06:28:32 | -23.5 | Dark | Down | 26.8 | 183.6 | Low | 06:13:32 - 06:43:32 | 1521 |
| La Pine/Gilchrist | 06:28:32 | -23.7 | Dark | Down | 27.1 | 183.5 | Low | 06:13:32 - 06:43:32 | 1511 |
| North Lake | 06:28:29 | -24.3 | Dark | Down | 27.5 | 184.2 | Low | 06:13:29 - 06:43:29 | 1483 |
| Paisley | 06:28:28 | -24.9 | Dark | Down | 28.0 | 184.6 | Low | 06:13:28 - 06:43:28 | 1450 |
| Klamath Falls | 06:28:33 | -24.9 | Dark | Down | 28.5 | 183.3 | Low | 06:13:33 - 06:43:33 | 1438 |
| Lakeview | 06:28:28 | -25.4 | Dark | Down | 28.5 | 184.8 | Low | 06:13:28 - 06:43:28 | 1422 |
| Cedarville | 06:28:27 | -26.1 | Dark | Down | 29.1 | 185.0 | Low | 06:13:27 - 06:43:27 | 1384 |
| Fall River/Burney | 06:28:32 | -26.1 | Dark | Down | 29.7 | 183.7 | Low | 06:13:32 - 06:43:32 | 1370 |
| Susanville | 06:28:29 | -26.9 | Dark | Down | 30.3 | 184.6 | Up | 06:13:29 - 06:43:29 | 1327 |
| Greenville | 06:28:30 | -27.0 | Dark | Down | 30.6 | 184.3 | Up | 06:13:30 - 06:43:30 | 1314 |
| Gimple | 06:28:29 | -27.1 | Dark | Down | 30.6 | 184.4 | Up | 06:13:29 - 06:43:29 | 1313 |
| Quincy | 06:28:30 | -27.2 | Dark | Down | 30.8 | 184.3 | Up | 06:13:30 - 06:43:30 | 1303 |
| Portola | 06:28:28 | -27.5 | Dark | Down | 30.9 | 184.8 | Up | 06:13:28 - 06:43:28 | 1291 |
| Reno | 06:28:26 | -28.0 | Dark | Down | 31.1 | 185.5 | Up | 06:13:26 - 06:43:26 | 1268 |
| Carson City | 06:28:25 | -28.3 | Dark | Down | 31.4 | 185.6 | Up | 06:13:25 - 06:43:25 | 1247 |
| Gardnerville | 06:28:25 | -28.5 | Dark | Down | 31.7 | 185.6 | Up | 06:13:25 - 06:43:25 | 1232 |
| Yerington | 06:28:22 | -28.7 | Dark | Down | 31.6 | 186.3 | Up | 06:13:22 - 06:43:22 | 1229 |
| Hawthorne | 06:28:20 | -29.3 | Dark | Down | 32.0 | 186.9 | Up | 06:13:20 - 06:43:20 | 1195 |
| Lee Vining | 06:28:23 | -29.6 | Dark | Down | 32.6 | 186.4 | Up | 06:13:23 - 06:43:23 | 1167 |
| Tonopah | 06:28:14 | -30.2 | Dark | Down | 32.3 | 188.5 | Up | 06:13:14 - 06:43:14 | 1150 |
| Bishop | 06:28:19 | -30.4 | Dark | Down | 33.1 | 187.2 | Up | 06:13:19 - 06:43:19 | 1121 |
| Niwot | 06:27:27 | -31.0 | Dark | Down | 28.0 | 200.8 | Low | 06:12:27 - 06:42:27 | 1094 |
| SwRI | 06:27:27 | -31.1 | Dark | Down | 28.1 | 200.7 | Low | 06:12:27 - 06:42:27 | 1089 |
| Beatty | 06:28:12 | -31.4 | Dark | Down | 33.4 | 189.1 | Up | 06:13:12 - 06:43:12 | 1072 |
| Indian Springs | 06:28:08 | -32.0 | Dark | Down | 33.6 | 190.3 | Up | 06:13:08 - 06:43:08 | 1037 |
| CPSLO | 06:28:29 | -31.4 | Dark | Down | 35.4 | 184.8 | Up | 06:13:29 - 06:43:29 | 1017 |
| Henderson | 06:28:05 | -32.7 | Dark | Down | 34.0 | 191.1 | Up | 06:13:05 - 06:43:05 | 993 |
| Searchlight/Boulder City | 06:28:04 | -33.3 | Dark | Down | 34.6 | 191.3 | Up | 06:13:04 - 06:43:04 | 955 |
| Patrick | 06:28:00 | -33.6 | Dark | Down | 34.4 | 192.4 | Up | 06:13:00 - 06:43:00 | 937 |
| Laughlin/Bullhead City | 06:28:03 | -33.6 | Dark | Down | 34.8 | 191.7 | Up | 06:13:03 - 06:43:03 | 930 |
| Kingman/Dolan Springs | 06:28:01 | -33.8 | Dark | Down | 34.7 | 192.3 | Up | 06:13:01 - 06:43:01 | 925 |
| Wildwood | 06:28:20 | -33.3 | Dark | Down | 36.4 | 187.3 | Up | 06:13:20 - 06:43:20 | 913 |
| Mohave Valley | 06:28:02 | -33.9 | Dark | Down | 35.1 | 191.7 | Up | 06:13:02 - 06:43:02 | 912 |
| DCO | 06:27:57 | -34.1 | Dark | Down | 34.6 | 193.3 | Up | 06:12:57 - 06:42:57 | 906 |
| Lake Havasu City | 06:28:01 | -34.3 | Dark | Down | 35.4 | 192.1 | Up | 06:13:01 - 06:43:01 | 882 |
| Idyllwild | 06:28:12 | -34.3 | Dark | Down | 36.5 | 189.5 | Up | 06:13:12 - 06:43:12 | 865 |
| Parker | 06:28:01 | -34.7 | Dark | Down | 35.7 | 192.2 | Up | 06:13:01 - 06:43:01 | 858 |
| Blythe | 06:28:03 | -35.1 | Dark | Down | 36.3 | 191.9 | Up | 06:13:03 - 06:43:03 | 827 |
| Calipatria | 06:28:06 | -35.2 | Dark | Down | 36.9 | 190.9 | Up | 06:13:06 - 06:43:06 | 806 |
| George/Scottsdale | 06:27:50 | -35.8 | Dark | Down | 35.7 | 195.0 | Up | 06:12:50 - 06:42:50 | 793 |
| Yuma | 06:28:02 | -35.9 | Dark | Down | 37.2 | 192.0 | Up | 06:13:02 - 06:43:02 | 764 |
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 04KC19, (2025/07/31 06:29UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 32.13 45 Nunki 18:55:15.9 -26:17:49 2.0 7.44 78 PPM 234997 18:46:01.2 -19:36:23 6.3 0.42 77 PPM 234996 18:45:56.1 -19:04:56 8.3 0.12 77 04KC19 18:45:42.0 -19:11:28 13.3 76 Positions are for J2000
Event circumstances last updated at 2020/07/18 23:35:14 UT
Marc W. Buie, Southwest Research Institute