Event between (415720) 99RU215 and star GA1080:00278840 with event index number of 2245879
Geocentric closest approach at 2022/03/01 05:27:11 UTC
J2000 position of star is 02:41:13.0 +19:49:07
Equinox of date position of star is 02:42:26.8 +19:54:40
Stellar brightness G=13.5,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 84 degrees from the moon.
Moon is 3% illuminated.
TNO apparent brightness V=23.6
[RECON map]
TNO is 41.5 AU from the Sun
and 41.9 AU from the Earth.
The TNO is moving 17.7
km/sec on the sky relative to the star, or,
2.1 arcsec/hr.
The 1-sigma error in the time of the event is 207 seconds.
The 1-sigma cross-track error in the shadow position is
2152 km.
The sky-plane scale is
30372.8 km/arcsec.
The TNO has an absolute magnitude Hv=7.3
Diameter=208.9 km assuming a 5% albedo -- 11.8 sec chord
Diameter=85.3 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is CLASSICAL
Star training set for 415720, (2022/03/01 05:27UT) Object RA Dec mag sep mel Aldebaran 04:37:11.7 +16:33:07 0.8 27.41 108 Hamal 02:08:25.7 +23:33:58 2.0 8.71 78 34Mu Ari 02:43:37.2 +20:06:17 5.7 0.33 84 PPM 091920 02:44:16.4 +20:19:25 8.2 0.59 84 34Mu Ari 02:43:37.2 +20:06:17 5.7 0.33 84 415720 02:42:28.1 +19:54:45 13.5 84 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
4.3 sigma about the mid-time.
The median site spacing is 31.1 km
RECON observability=0.3 and success probability=0.0%
| 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 | 05:31:48 | -36.2 | Dark | Down | 19.9 | 277.4 | Really Low | 05:16:48 - 05:46:48 | 11242 |
| Kelowna | 05:31:49 | -36.4 | Dark | Down | 20.0 | 277.4 | Really Low | 05:16:49 - 05:46:49 | 11204 |
| Peachland | 05:31:49 | -36.3 | Dark | Down | 20.1 | 277.2 | Low | 05:16:49 - 05:46:49 | 11188 |
| Summerland | 05:31:50 | -36.5 | Dark | Down | 20.1 | 277.3 | Low | 05:16:50 - 05:46:50 | 11177 |
| Penticton | 05:31:50 | -36.6 | Dark | Down | 20.0 | 277.4 | Really Low | 05:16:50 - 05:46:50 | 11173 |
| Oliver | 05:31:52 | -36.8 | Dark | Down | 19.9 | 277.6 | Really Low | 05:16:52 - 05:46:52 | 11142 |
| Anarchist Mountain Observatory | 05:31:53 | -37.0 | Dark | Down | 19.8 | 277.8 | Really Low | 05:16:53 - 05:46:53 | 11131 |
| Tonasket | 05:31:53 | -37.1 | Dark | Down | 19.8 | 277.8 | Really Low | 05:16:53 - 05:46:53 | 11102 |
| Okanogan | 05:31:55 | -37.3 | Dark | Down | 19.8 | 277.9 | Really Low | 05:16:55 - 05:46:55 | 11068 |
| Brewster | 05:31:55 | -37.3 | Dark | Down | 19.9 | 277.8 | Really Low | 05:16:55 - 05:46:55 | 11039 |
| Manson/Chelan | 05:31:56 | -37.2 | Dark | Down | 20.1 | 277.6 | Low | 05:16:56 - 05:46:56 | 11012 |
| Victoria | 05:31:50 | -35.1 | Dark | Down | 22.4 | 275.0 | Low | 05:16:50 - 05:46:50 | 11001 |
| Wenatchee | 05:31:57 | -37.4 | Dark | Down | 20.2 | 277.7 | Low | 05:16:57 - 05:46:57 | 10965 |
| Ellensburg | 05:31:58 | -37.6 | Dark | Down | 20.3 | 277.7 | Low | 05:16:58 - 05:46:58 | 10922 |
| Pasco | 05:32:02 | -38.8 | Dark | Down | 19.2 | 278.9 | Really Low | 05:17:02 - 05:47:02 | 10886 |
| Yakima | 05:32:00 | -37.8 | Dark | Down | 20.2 | 277.8 | Low | 05:17:00 - 05:47:00 | 10884 |
| PNWRO | 05:32:03 | -39.1 | Dark | Down | 19.0 | 279.2 | Really Low | 05:17:03 - 05:47:03 | 10869 |
| Toppenish/White Swan | 05:32:01 | -38.0 | Dark | Down | 20.1 | 278.0 | Low | 05:17:01 - 05:47:01 | 10868 |
| Goldendale | 05:32:02 | -38.1 | Dark | Down | 20.3 | 277.9 | Low | 05:17:02 - 05:47:02 | 10807 |
| The Dalles | 05:32:03 | -38.0 | Dark | Down | 20.5 | 277.8 | Low | 05:17:03 - 05:47:03 | 10778 |
| Maupin | 05:32:04 | -38.3 | Dark | Down | 20.4 | 278.0 | Low | 05:17:04 - 05:47:04 | 10741 |
| Dunrhomin | 05:32:26 | -50.4 | Dark | Down | 7.8 | 289.4 | Really Low | 05:17:26 - 05:47:26 | 10710 |
| Redmond | 05:32:07 | -38.8 | Dark | Down | 20.3 | 278.3 | Low | 05:17:07 - 05:47:07 | 10654 |
| Sisters | 05:32:06 | -38.5 | Dark | Down | 20.6 | 278.0 | Low | 05:17:06 - 05:47:06 | 10648 |
| Bend | 05:32:08 | -38.8 | Dark | Down | 20.4 | 278.3 | Low | 05:17:08 - 05:47:08 | 10631 |
| Oregon Observatory | 05:32:07 | -38.8 | Dark | Down | 20.5 | 278.2 | Low | 05:17:07 - 05:47:07 | 10612 |
| La Pine/Gilchrist | 05:32:07 | -38.9 | Dark | Down | 20.5 | 278.3 | Low | 05:17:07 - 05:47:07 | 10591 |
| North Lake | 05:32:10 | -39.5 | Dark | Down | 20.0 | 278.8 | Really Low | 05:17:10 - 05:47:10 | 10564 |
| Paisley | 05:32:13 | -40.0 | Dark | Down | 19.6 | 279.3 | Really Low | 05:17:13 - 05:47:13 | 10520 |
| Chiloquin | 05:32:12 | -39.3 | Dark | Down | 20.5 | 278.5 | Low | 05:17:12 - 05:47:12 | 10476 |
| Lakeview | 05:32:14 | -40.4 | Dark | Down | 19.4 | 279.6 | Really Low | 05:17:14 - 05:47:14 | 10476 |
| Klamath Falls | 05:32:13 | -39.5 | Dark | Down | 20.4 | 278.7 | Low | 05:17:13 - 05:47:13 | 10445 |
| Cedarville | 05:32:16 | -40.9 | Dark | Down | 19.1 | 279.9 | Really Low | 05:17:16 - 05:47:16 | 10417 |
| Fall River/Burney | 05:32:16 | -40.3 | Dark | Down | 20.0 | 279.3 | Really Low | 05:17:16 - 05:47:16 | 10340 |
| Susanville | 05:32:19 | -41.2 | Dark | Down | 19.3 | 280.0 | Really Low | 05:17:19 - 05:47:19 | 10297 |
| Gimple | 05:32:20 | -41.2 | Dark | Down | 19.4 | 280.0 | Really Low | 05:17:20 - 05:47:20 | 10265 |
| Greenville | 05:32:20 | -41.1 | Dark | Down | 19.5 | 279.9 | Really Low | 05:17:20 - 05:47:20 | 10263 |
| Quincy | 05:32:21 | -41.2 | Dark | Down | 19.4 | 280.0 | Really Low | 05:17:21 - 05:47:21 | 10243 |
| Portola | 05:32:21 | -41.6 | Dark | Down | 19.0 | 280.3 | Really Low | 05:17:21 - 05:47:21 | 10243 |
| Reno | 05:32:21 | -42.2 | Dark | Down | 18.5 | 280.8 | Really Low | 05:17:21 - 05:47:21 | 10233 |
| Carson City | 05:32:23 | -42.4 | Dark | Down | 18.4 | 280.9 | Really Low | 05:17:23 - 05:47:23 | 10199 |
| Yerington | 05:32:25 | -42.9 | Dark | Down | 17.9 | 281.4 | Really Low | 05:17:25 - 05:47:25 | 10196 |
| Gardnerville | 05:32:24 | -42.5 | Dark | Down | 18.3 | 281.1 | Really Low | 05:17:24 - 05:47:24 | 10176 |
| Hawthorne | 05:32:27 | -43.5 | Dark | Down | 17.4 | 281.8 | Really Low | 05:17:27 - 05:47:27 | 10165 |
| Tonopah | 05:32:29 | -44.7 | Dark | Down | 16.2 | 282.8 | Really Low | 05:17:29 - 05:47:29 | 10157 |
| Lee Vining | 05:32:26 | -43.5 | Dark | Down | 17.6 | 281.7 | Really Low | 05:17:26 - 05:47:26 | 10097 |
| Bishop | 05:32:29 | -44.3 | Dark | Down | 16.9 | 282.3 | Really Low | 05:17:29 - 05:47:29 | 10057 |
| Beatty | 05:32:32 | -45.6 | Dark | Down | 15.5 | 283.4 | Really Low | 05:17:32 - 05:47:32 | 10056 |
| Indian Springs | 05:32:34 | -46.5 | Dark | Down | 14.6 | 284.0 | Really Low | 05:17:34 - 05:47:34 | 10054 |
| Henderson | 05:32:36 | -47.3 | Dark | Down | 13.9 | 284.6 | Really Low | 05:17:36 - 05:47:36 | 10021 |
| Patrick | 05:32:37 | -48.4 | Dark | Down | 12.9 | 285.3 | Really Low | 05:17:37 - 05:47:37 | 9992 |
| Kingman/Dolan Springs | 05:32:38 | -48.4 | Dark | Down | 13.0 | 285.3 | Really Low | 05:17:38 - 05:47:38 | 9965 |
| Laughlin/Bullhead City | 05:32:37 | -48.1 | Dark | Down | 13.4 | 285.0 | Really Low | 05:17:37 - 05:47:37 | 9947 |
| Mohave Valley | 05:32:39 | -48.2 | Dark | Down | 13.3 | 285.1 | Really Low | 05:17:39 - 05:47:39 | 9920 |
| Lake Havasu City | 05:32:39 | -48.6 | Dark | Down | 13.0 | 285.3 | Really Low | 05:17:39 - 05:47:39 | 9888 |
| George/Scottsdale | 05:32:42 | -50.8 | Dark | Down | 10.8 | 286.7 | Really Low | 05:17:42 - 05:47:42 | 9886 |
| Parker | 05:32:41 | -48.8 | Dark | Down | 12.9 | 285.4 | Really Low | 05:17:41 - 05:47:41 | 9854 |
| Blythe | 05:32:42 | -48.9 | Dark | Down | 13.0 | 285.3 | Really Low | 05:17:42 - 05:47:42 | 9793 |
| CPSLO | 05:32:33 | -43.7 | Dark | Down | 18.3 | 281.7 | Really Low | 05:17:33 - 05:47:33 | 9791 |
| Idyllwild | 05:32:39 | -47.3 | Dark | Down | 14.7 | 284.2 | Really Low | 05:17:39 - 05:47:39 | 9743 |
| Wildwood | 05:32:38 | -45.7 | Dark | Down | 16.3 | 283.2 | Really Low | 05:17:38 - 05:47:38 | 9725 |
| Calipatria | 05:32:42 | -48.5 | Dark | Down | 13.6 | 285.0 | Really Low | 05:17:42 - 05:47:42 | 9716 |
| Yuma | 05:32:43 | -49.3 | Dark | Down | 12.8 | 285.5 | Really Low | 05:17:43 - 05:47:43 | 9700 |
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 415720, (2022/03/01 05:27UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 27.41 108 Hamal 02:07:10.7 +23:27:41 2.0 8.71 78 34Mu Ari 02:42:22.0 +20:00:41 5.7 0.33 84 PPM 091920 02:43:01.1 +20:13:50 8.2 0.59 84 34Mu Ari 02:42:22.0 +20:00:41 5.7 0.33 84 415720 02:41:13.0 +19:49:07 13.5 84 Positions are for J2000
Event circumstances last updated at 2021/10/15 01:14:11 UT
Marc W. Buie, Southwest Research Institute