Event between 15BY518 and star GA0820:03952150 with event index number of 1430898
Geocentric closest approach at 2025/02/11 07:01:29 UTC
J2000 position of star is 10:07:57.6 -06:57:28
Equinox of date position of star is 10:08:58.3 -07:03:27
Stellar brightness G=15.5,
use SENSEUP=128
Star is 36 degrees from the moon.
Moon is 98% illuminated.
TNO apparent brightness V=25.8
[RECON map]
TNO is 37.6 AU from the Sun
and 36.7 AU from the Earth.
The TNO is moving 24.2
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 492 seconds.
The 1-sigma cross-track error in the shadow position is
5701 km.
The sky-plane scale is
26588.2 km/arcsec.
The TNO has an absolute magnitude Hv=10.0
Diameter=310.5 km assuming a 5% albedo -- 2.5 sec chord
Diameter=126.7 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is SCATNEAR
Star training set for 15BY518, (2025/02/11 07:01UT) Object RA Dec mag sep mel Regulus 10:09:42.5 +11:50:37 1.3 18.93 22 Alphard 09:28:49.3 -08:46:07 2.0 10.14 33 17 Sex 10:11:22.4 -08:31:57 6.0 1.55 37 PPM 193105 10:08:48.7 -06:33:44 8.0 0.53 35 PPM 193115 10:09:39.6 -07:03:36 9.6 0.11 36 15BY518 10:09:12.9 -07:04:53 15.5 36 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
1.8 sigma about the mid-time.
The median site spacing is 15.5 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 | 07:03:52 | -51.2 | Dark | Up | 29.2 | 152.8 | Low | 06:48:52 - 07:18:52 | 966 |
| Kelowna | 07:03:52 | -51.5 | Dark | Up | 29.5 | 152.5 | Low | 06:48:52 - 07:18:52 | 935 |
| Peachland | 07:03:53 | -51.5 | Dark | Up | 29.5 | 152.1 | Low | 06:48:53 - 07:18:53 | 919 |
| Summerland | 07:03:52 | -51.6 | Dark | Up | 29.7 | 152.2 | Low | 06:48:52 - 07:18:52 | 911 |
| Penticton | 07:03:52 | -51.7 | Dark | Up | 29.8 | 152.3 | Low | 06:48:52 - 07:18:52 | 909 |
| Oliver | 07:03:52 | -52.0 | Dark | Up | 30.1 | 152.2 | Up | 06:48:52 - 07:18:52 | 884 |
| Anarchist Mountain Observatory | 07:03:52 | -52.2 | Dark | Up | 30.3 | 152.4 | Up | 06:48:52 - 07:18:52 | 878 |
| Tonasket | 07:03:52 | -52.5 | Dark | Up | 30.5 | 152.2 | Up | 06:48:52 - 07:18:52 | 854 |
| Okanogan | 07:03:53 | -52.7 | Dark | Up | 30.8 | 152.0 | Up | 06:48:53 - 07:18:53 | 825 |
| Brewster | 07:03:53 | -52.9 | Dark | Up | 31.0 | 151.7 | Up | 06:48:53 - 07:18:53 | 800 |
| Manson/Chelan | 07:03:54 | -53.0 | Dark | Up | 31.0 | 151.2 | Up | 06:48:54 - 07:18:54 | 775 |
| Entiat | 07:03:55 | -53.1 | Dark | Up | 31.2 | 151.1 | Up | 06:48:55 - 07:18:55 | 757 |
| Wenatchee | 07:03:55 | -53.3 | Dark | Up | 31.4 | 150.9 | Up | 06:48:55 - 07:18:55 | 736 |
| Victoria | 07:04:02 | -51.3 | Dark | Up | 29.4 | 147.9 | Low | 06:49:02 - 07:19:02 | 733 |
| Ellensburg | 07:03:56 | -53.6 | Dark | Up | 31.7 | 150.5 | Up | 06:48:56 - 07:18:56 | 699 |
| Pasco | 07:03:52 | -54.7 | Dark | Up | 32.8 | 151.9 | Up | 06:48:52 - 07:18:52 | 684 |
| PNWRO | 07:03:52 | -55.0 | Dark | Up | 33.1 | 152.0 | Up | 06:48:52 - 07:18:52 | 672 |
| Yakima | 07:03:56 | -54.0 | Dark | Up | 32.0 | 150.4 | Up | 06:48:56 - 07:18:56 | 668 |
| Toppenish/White Swan | 07:03:56 | -54.2 | Dark | Up | 32.3 | 150.5 | Up | 06:48:56 - 07:18:56 | 657 |
| Niwot | 07:03:10 | -63.7 | Dark | Up | 42.1 | 166.9 | Up | 06:48:10 - 07:18:10 | 641 |
| SwRI | 07:03:11 | -63.8 | Dark | Up | 42.2 | 166.7 | Up | 06:48:11 - 07:18:11 | 630 |
| Goldendale | 07:03:57 | -54.5 | Dark | Up | 32.6 | 149.9 | Up | 06:48:57 - 07:18:57 | 603 |
| The Dalles | 07:03:58 | -54.6 | Dark | Up | 32.7 | 149.4 | Up | 06:48:58 - 07:18:58 | 576 |
| Maupin | 07:03:58 | -55.0 | Dark | Up | 33.1 | 149.4 | Up | 06:48:58 - 07:18:58 | 547 |
| Redmond | 07:03:58 | -55.7 | Dark | Up | 33.8 | 149.0 | Up | 06:48:58 - 07:18:58 | 475 |
| Sisters | 07:03:59 | -55.5 | Dark | Up | 33.7 | 148.5 | Up | 06:48:59 - 07:18:59 | 465 |
| Bend | 07:03:59 | -55.8 | Dark | Up | 34.0 | 148.7 | Up | 06:48:59 - 07:18:59 | 454 |
| Oregon Observatory | 07:03:59 | -55.9 | Dark | Up | 34.1 | 148.5 | Up | 06:48:59 - 07:18:59 | 437 |
| La Pine/Gilchrist | 07:04:00 | -56.1 | Dark | Up | 34.2 | 148.4 | Up | 06:49:00 - 07:19:00 | 419 |
| North Lake | 07:03:58 | -56.7 | Dark | Up | 34.8 | 148.9 | Up | 06:48:58 - 07:18:58 | 403 |
| Paisley | 07:03:57 | -57.3 | Dark | Up | 35.4 | 149.1 | Up | 06:48:57 - 07:18:57 | 370 |
| Lakeview | 07:03:57 | -57.8 | Dark | Up | 35.9 | 149.1 | Up | 06:48:57 - 07:18:57 | 335 |
| Klamath Falls | 07:04:00 | -57.1 | Dark | Up | 35.3 | 147.5 | Up | 06:49:00 - 07:19:00 | 295 |
| Cedarville | 07:03:56 | -58.4 | Dark | Up | 36.5 | 149.1 | Up | 06:48:56 - 07:18:56 | 288 |
| Fall River/Burney | 07:04:00 | -58.2 | Dark | Up | 36.5 | 147.5 | Up | 06:49:00 - 07:19:00 | 211 |
| Susanville | 07:03:58 | -59.1 | Dark | Up | 37.3 | 148.1 | Up | 06:48:58 - 07:18:58 | 183 |
| Gimple | 07:03:58 | -59.2 | Dark | Up | 37.5 | 147.7 | Up | 06:48:58 - 07:18:58 | 153 |
| Greenville | 07:03:59 | -59.2 | Dark | Up | 37.4 | 147.7 | Up | 06:48:59 - 07:18:59 | 151 |
| Portola | 07:03:57 | -59.7 | Dark | Up | 37.9 | 148.1 | Up | 06:48:57 - 07:18:57 | 139 |
| Reno | 07:03:55 | -60.2 | Dark | Up | 38.4 | 148.7 | Up | 06:48:55 - 07:18:55 | 137 |
| Quincy | 07:03:59 | -59.3 | Dark | Up | 37.6 | 147.6 | Up | 06:48:59 - 07:18:59 | 134 |
| Yerington | 07:03:53 | -60.9 | Dark | Up | 39.1 | 149.2 | Up | 06:48:53 - 07:18:53 | 112 |
| Carson City | 07:03:55 | -60.5 | Dark | Up | 38.7 | 148.6 | Up | 06:48:55 - 07:18:55 | 108 |
| Tonopah | 07:03:47 | -62.5 | Dark | Up | 40.7 | 151.1 | Up | 06:48:47 - 07:18:47 | 97 |
| Hawthorne | 07:03:52 | -61.5 | Dark | Up | 39.7 | 149.6 | Up | 06:48:52 - 07:18:52 | 90 |
| Gardnerville | 07:03:55 | -60.7 | Dark | Up | 38.9 | 148.5 | Up | 06:48:55 - 07:18:55 | 89 |
| Lee Vining | 07:03:53 | -61.8 | Dark | Up | 40.0 | 148.8 | Up | 06:48:53 - 07:18:53 | 28 |
| Indian Springs | 07:03:42 | -64.4 | Dark | Up | 42.6 | 152.4 | Up | 06:48:42 - 07:18:42 | 23 |
| Beatty | 07:03:46 | -63.7 | Dark | Up | 41.9 | 151.2 | Up | 06:48:46 - 07:18:46 | 15 |
| Bishop | 07:03:51 | -62.6 | Dark | Up | 40.8 | 149.4 | Up | 06:48:51 - 07:18:51 | 1 |
| Henderson | 07:03:40 | -65.2 | Dark | Up | 43.3 | 153.0 | Up | 06:48:40 - 07:18:40 | 1 |
| Patrick | 07:03:36 | -66.1 | Dark | Up | 44.2 | 154.1 | Up | 06:48:36 - 07:18:36 | -15 |
| DCO | 07:03:34 | -66.7 | Dark | Up | 44.8 | 154.9 | Up | 06:48:34 - 07:18:34 | -17 |
| Kingman/Dolan Springs | 07:03:37 | -66.3 | Dark | Up | 44.4 | 153.8 | Up | 06:48:37 - 07:18:37 | -40 |
| Searchlight/Boulder City | 07:03:40 | -65.7 | Dark | Up | 43.8 | 152.8 | Up | 06:48:40 - 07:18:40 | -46 |
| Laughlin/Bullhead City | 07:03:38 | -66.1 | Dark | Up | 44.2 | 153.1 | Up | 06:48:38 - 07:18:38 | -60 |
| Mohave Valley | 07:03:38 | -66.3 | Dark | Up | 44.5 | 153.0 | Up | 06:48:38 - 07:18:38 | -83 |
| George/Scottsdale | 07:03:29 | -68.4 | Dark | Up | 46.5 | 156.0 | Up | 06:48:29 - 07:18:29 | -91 |
| Lake Havasu City | 07:03:37 | -66.8 | Dark | Up | 44.9 | 153.2 | Up | 06:48:37 - 07:18:37 | -108 |
| Parker | 07:03:37 | -67.1 | Dark | Up | 45.2 | 153.0 | Up | 06:48:37 - 07:18:37 | -138 |
| Blythe | 07:03:38 | -67.4 | Dark | Up | 45.6 | 152.4 | Up | 06:48:38 - 07:18:38 | -193 |
| CPSLO | 07:03:58 | -63.1 | Dark | Up | 41.6 | 145.8 | Up | 06:48:58 - 07:18:58 | -250 |
| Idyllwild | 07:03:45 | -66.3 | Dark | Up | 44.6 | 149.8 | Up | 06:48:45 - 07:18:45 | -254 |
| Calipatria | 07:03:40 | -67.4 | Dark | Up | 45.6 | 151.0 | Up | 06:48:40 - 07:18:40 | -268 |
| Yuma | 07:03:38 | -68.1 | Dark | Up | 46.4 | 151.9 | Up | 06:48:38 - 07:18:38 | -274 |
| Wildwood | 07:03:51 | -65.1 | Dark | Up | 43.5 | 147.6 | Up | 06:48:51 - 07:18:51 | -287 |
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 15BY518, (2025/02/11 07:01UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 18.93 22 Alphard 09:27:35.2 -08:39:30 2.0 10.14 33 17 Sex 10:10:07.5 -08:24:30 6.0 1.55 37 PPM 193105 10:07:33.3 -06:26:19 8.0 0.53 35 PPM 193115 10:08:24.3 -06:56:11 9.6 0.11 36 15BY518 10:07:57.6 -06:57:28 15.5 36 Positions are for J2000
Event circumstances last updated at 2020/03/26 21:06:35 UT
Marc W. Buie, Southwest Research Institute