Event between 04XX190 and star GA1120:02571946 with event index number of 1696299
Geocentric closest approach at 2025/12/16 07:31:37 UTC
J2000 position of star is 06:58:37.9 +23:35:24
Equinox of date position of star is 06:59:51.3 +23:33:40
Stellar brightness G=13.3,
use SENSEUP=32
Star is 120 degrees from the moon.
Moon is 12% illuminated.
TNO apparent brightness V=26.3
[RECON map]
TNO is 42.3 AU from the Sun
and 41.4 AU from the Earth.
The TNO is moving 23.9
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 1973 seconds.
The 1-sigma cross-track error in the shadow position is
3934 km.
The sky-plane scale is
30012.8 km/arcsec.
The TNO has an absolute magnitude Hv=10.0
Diameter=232.3 km assuming a 5% albedo -- 2.5 sec chord
Diameter=94.8 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CLASSICAL
Star training set for 04XX190, (2025/12/16 07:32UT) Object RA Dec mag sep mel Pollux 07:46:54.3 +27:57:41 1.1 11.39 111 Alhena 06:39:12.7 +16:22:30 1.9 8.71 124 42Ome Gem 07:03:59.6 +24:10:34 5.2 1.07 119 PPM 096879 07:02:14.7 +23:24:06 7.2 0.49 120 PPM 096794 06:58:45.7 +23:17:50 8.8 0.42 120 PPM 096829 07:00:19.5 +23:16:18 11.7 0.28 120 04XX190 07:00:12.4 +23:33:10 13.3 120 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
0.5 sigma about the mid-time.
The median site spacing is 23.6 km
RECON observability=1.0 and success probability=5.1%
| 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 | 07:33:05 | -62.8 | Dark | Down | 56.8 | 133.9 | Up | 07:18:05 - 07:48:05 | 8691 |
| Kelowna | 07:33:06 | -63.2 | Dark | Down | 57.0 | 133.3 | Up | 07:18:06 - 07:48:06 | 8653 |
| Peachland | 07:33:07 | -63.2 | Dark | Down | 56.9 | 132.7 | Up | 07:18:07 - 07:48:07 | 8644 |
| Summerland | 07:33:08 | -63.4 | Dark | Down | 57.1 | 132.7 | Up | 07:18:08 - 07:48:08 | 8628 |
| Penticton | 07:33:07 | -63.5 | Dark | Down | 57.2 | 132.8 | Up | 07:18:07 - 07:48:07 | 8621 |
| Oliver | 07:33:08 | -63.8 | Dark | Down | 57.4 | 132.4 | Up | 07:18:08 - 07:48:08 | 8586 |
| Anarchist Mountain Observatory | 07:33:07 | -64.0 | Dark | Down | 57.6 | 132.5 | Up | 07:18:07 - 07:48:07 | 8568 |
| Victoria | 07:33:18 | -63.8 | Dark | Down | 55.9 | 126.3 | Up | 07:18:18 - 07:48:18 | 8543 |
| Tonasket | 07:33:08 | -64.3 | Dark | Down | 57.8 | 132.0 | Up | 07:18:08 - 07:48:08 | 8537 |
| Okanogan | 07:33:08 | -64.6 | Dark | Down | 57.9 | 131.4 | Up | 07:18:08 - 07:48:08 | 8504 |
| Brewster | 07:33:10 | -64.9 | Dark | Down | 58.0 | 130.8 | Up | 07:18:10 - 07:48:10 | 8477 |
| Manson/Chelan | 07:33:10 | -65.0 | Dark | Down | 58.0 | 130.0 | Up | 07:18:10 - 07:48:10 | 8458 |
| Entiat | 07:33:11 | -65.2 | Dark | Down | 58.1 | 129.6 | Up | 07:18:11 - 07:48:11 | 8436 |
| Wenatchee | 07:33:12 | -65.5 | Dark | Down | 58.2 | 129.2 | Up | 07:18:12 - 07:48:12 | 8411 |
| Ellensburg | 07:33:12 | -65.8 | Dark | Down | 58.3 | 128.3 | Up | 07:18:12 - 07:48:12 | 8370 |
| Yakima | 07:33:13 | -66.2 | Dark | Down | 58.6 | 127.8 | Up | 07:18:13 - 07:48:13 | 8329 |
| Toppenish/White Swan | 07:33:13 | -66.5 | Dark | Down | 58.8 | 127.8 | Up | 07:18:13 - 07:48:13 | 8305 |
| Pasco | 07:33:09 | -66.8 | Dark | Down | 59.5 | 129.4 | Up | 07:18:09 - 07:48:09 | 8286 |
| PNWRO | 07:33:08 | -67.0 | Dark | Down | 59.8 | 129.4 | Up | 07:18:08 - 07:48:08 | 8259 |
| Goldendale | 07:33:14 | -66.9 | Dark | Down | 58.9 | 126.4 | Up | 07:18:14 - 07:48:14 | 8251 |
| The Dalles | 07:33:16 | -67.1 | Dark | Down | 58.8 | 125.6 | Up | 07:18:16 - 07:48:16 | 8230 |
| Maupin | 07:33:16 | -67.5 | Dark | Down | 59.1 | 125.2 | Up | 07:18:16 - 07:48:16 | 8187 |
| Sisters | 07:33:18 | -68.2 | Dark | Down | 59.3 | 123.3 | Up | 07:18:18 - 07:48:18 | 8099 |
| Redmond | 07:33:17 | -68.3 | Dark | Down | 59.6 | 123.8 | Up | 07:18:17 - 07:48:17 | 8094 |
| Bend | 07:33:18 | -68.5 | Dark | Down | 59.6 | 123.3 | Up | 07:18:18 - 07:48:18 | 8073 |
| Oregon Observatory | 07:33:18 | -68.6 | Dark | Down | 59.6 | 122.9 | Up | 07:18:18 - 07:48:18 | 8055 |
| La Pine/Gilchrist | 07:33:18 | -68.8 | Dark | Down | 59.7 | 122.5 | Up | 07:18:18 - 07:48:18 | 8035 |
| North Lake | 07:33:17 | -69.4 | Dark | Down | 60.3 | 122.7 | Up | 07:18:17 - 07:48:17 | 7985 |
| Paisley | 07:33:17 | -70.0 | Dark | Down | 60.8 | 122.4 | Up | 07:18:17 - 07:48:17 | 7925 |
| Klamath Falls | 07:33:20 | -70.1 | Dark | Down | 60.3 | 120.0 | Up | 07:18:20 - 07:48:20 | 7884 |
| Lakeview | 07:33:17 | -70.5 | Dark | Down | 61.2 | 121.9 | Up | 07:18:17 - 07:48:17 | 7870 |
| Cedarville | 07:33:16 | -71.2 | Dark | Down | 61.7 | 121.1 | Up | 07:18:16 - 07:48:16 | 7800 |
| Fall River/Burney | 07:33:21 | -71.3 | Dark | Down | 61.1 | 118.7 | Up | 07:18:21 - 07:48:21 | 7757 |
| Susanville | 07:33:19 | -72.1 | Dark | Down | 61.9 | 118.7 | Up | 07:18:19 - 07:48:19 | 7685 |
| Greenville | 07:33:20 | -72.3 | Dark | Down | 61.9 | 117.8 | Up | 07:18:20 - 07:48:20 | 7658 |
| Gimple | 07:33:19 | -72.3 | Dark | Down | 61.9 | 117.9 | Up | 07:18:19 - 07:48:19 | 7657 |
| Quincy | 07:33:20 | -72.5 | Dark | Down | 62.0 | 117.5 | Up | 07:18:20 - 07:48:20 | 7636 |
| Portola | 07:33:18 | -72.7 | Dark | Down | 62.3 | 117.9 | Up | 07:18:18 - 07:48:18 | 7620 |
| Niwot | 07:32:27 | -71.6 | Dark | Down | 70.8 | 146.1 | Up | 07:17:27 - 07:47:27 | 7620 |
| SwRI | 07:32:27 | -71.7 | Dark | Down | 70.9 | 145.7 | Up | 07:17:27 - 07:47:27 | 7608 |
| Reno | 07:33:18 | -73.1 | Dark | Down | 62.9 | 118.3 | Up | 07:18:18 - 07:48:18 | 7587 |
| Carson City | 07:33:17 | -73.5 | Dark | Down | 63.1 | 117.7 | Up | 07:18:17 - 07:48:17 | 7549 |
| Yerington | 07:33:15 | -73.8 | Dark | Down | 63.6 | 118.2 | Up | 07:18:15 - 07:48:15 | 7524 |
| Gardnerville | 07:33:17 | -73.7 | Dark | Down | 63.2 | 117.3 | Up | 07:18:17 - 07:48:17 | 7522 |
| Hawthorne | 07:33:14 | -74.4 | Dark | Down | 64.2 | 118.1 | Up | 07:18:14 - 07:48:14 | 7471 |
| Tonopah | 07:33:10 | -75.1 | Dark | Down | 65.4 | 119.2 | Up | 07:18:10 - 07:48:10 | 7413 |
| Lee Vining | 07:33:15 | -74.8 | Dark | Down | 64.1 | 116.4 | Up | 07:18:15 - 07:48:15 | 7413 |
| Bishop | 07:33:14 | -75.6 | Dark | Down | 64.9 | 116.3 | Up | 07:18:14 - 07:48:14 | 7344 |
| Beatty | 07:33:09 | -76.3 | Dark | Down | 66.2 | 117.6 | Up | 07:18:09 - 07:48:09 | 7286 |
| Indian Springs | 07:33:04 | -76.7 | Dark | Down | 67.1 | 118.5 | Up | 07:18:04 - 07:48:04 | 7246 |
| Henderson | 07:33:03 | -77.3 | Dark | Down | 67.9 | 118.4 | Up | 07:18:03 - 07:48:03 | 7185 |
| CPSLO | 07:33:23 | -76.9 | Dark | Down | 64.0 | 109.5 | Up | 07:18:23 - 07:48:23 | 7136 |
| Searchlight/Boulder City | 07:33:03 | -77.9 | Dark | Down | 68.2 | 117.3 | Up | 07:18:03 - 07:48:03 | 7123 |
| Patrick | 07:32:59 | -77.9 | Dark | Down | 69.0 | 118.8 | Up | 07:17:59 - 07:47:59 | 7114 |
| Kingman/Dolan Springs | 07:33:01 | -78.1 | Dark | Down | 68.9 | 118.0 | Up | 07:18:01 - 07:48:01 | 7090 |
| Laughlin/Bullhead City | 07:33:03 | -78.2 | Dark | Down | 68.6 | 117.1 | Up | 07:18:03 - 07:48:03 | 7089 |
| DCO | 07:32:57 | -78.2 | Dark | Down | 69.6 | 119.2 | Up | 07:17:57 - 07:47:57 | 7078 |
| Mohave Valley | 07:33:02 | -78.4 | Dark | Down | 68.7 | 116.5 | Up | 07:18:02 - 07:48:02 | 7059 |
| Lake Havasu City | 07:33:01 | -78.8 | Dark | Down | 69.1 | 115.9 | Up | 07:18:01 - 07:48:01 | 7015 |
| Wildwood | 07:33:18 | -78.6 | Dark | Down | 66.0 | 109.4 | Up | 07:18:18 - 07:48:18 | 6991 |
| Parker | 07:33:01 | -79.2 | Dark | Down | 69.2 | 115.1 | Up | 07:18:01 - 07:48:01 | 6976 |
| Idyllwild | 07:33:10 | -79.4 | Dark | Down | 67.6 | 110.9 | Up | 07:18:10 - 07:48:10 | 6942 |
| George/Scottsdale | 07:32:46 | -79.4 | Dark | Down | 71.2 | 117.9 | Up | 07:17:46 - 07:47:46 | 6926 |
| Blythe | 07:33:03 | -79.7 | Dark | Down | 69.2 | 113.5 | Up | 07:18:03 - 07:48:03 | 6920 |
| Calipatria | 07:33:05 | -80.1 | Dark | Down | 68.7 | 111.0 | Up | 07:18:05 - 07:48:05 | 6870 |
| Yuma | 07:33:03 | -80.6 | Dark | Down | 69.6 | 111.1 | Up | 07:18:03 - 07:48:03 | 6819 |
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 04XX190, (2025/12/16 07:32UT) Object RA Dec mag sep mel Pollux 07:45:18.0 +28:01:33 1.1 11.39 111 Alhena 06:37:42.8 +16:23:57 1.9 8.71 124 42Ome Gem 07:02:24.8 +24:12:55 5.2 1.07 119 PPM 096879 07:00:40.4 +23:26:24 7.2 0.49 120 PPM 096794 06:57:11.4 +23:20:00 8.8 0.42 120 PPM 096829 06:58:45.3 +23:18:31 11.7 0.28 120 04XX190 06:58:37.9 +23:35:24 13.3 120 Positions are for J2000
Event circumstances last updated at 2020/03/02 22:19:09 UT
Marc W. Buie, Southwest Research Institute