Event between (469987) 06HJ123 and star GA0720:06581457 with event index number of 2256108
Geocentric closest approach at 2022/04/15 11:26:41 UTC
J2000 position of star is 16:48:06.3 -16:10:02
Equinox of date position of star is 16:49:22.7 -16:12:18
Stellar brightness G=15.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 64 degrees from the moon.
Moon is 98% illuminated.
TNO apparent brightness V=21.5
[RECON map]
TNO is 32.9 AU from the Sun
and 32.2 AU from the Earth.
The TNO is moving 14.7
km/sec on the sky relative to the star, or,
2.3 arcsec/hr.
The 1-sigma error in the time of the event is 93 seconds.
The 1-sigma cross-track error in the shadow position is
1179 km.
The sky-plane scale is
23364.4 km/arcsec.
The TNO has an absolute magnitude Hv=6.2
Diameter=354.8 km assuming a 5% albedo -- 24.1 sec chord
Diameter=144.9 km assuming a 30% albedo -- 9.8 sec chord
Dynamical classification is 3:2E
Star training set for 469987, (2022/04/15 11:27UT) Object RA Dec mag sep mel Antares 16:30:46.7 -26:28:46 0.9 11.15 62 35Eta Oph 17:11:39.5 -15:45:03 2.6 5.37 69 PPM 232198 16:50:44.2 -15:42:19 6.3 0.60 64 PPM 232183 16:49:45.0 -16:22:26 7.8 0.19 64 469987 16:49:23.0 -16:12:18 15.1 64 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
5.0 sigma about the mid-time.
The median site spacing is 13.8 km
RECON observability=0.9 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) |
| Sleaford | 11:27:39 | -6.4 | NT | Up | 20.1 | 198.0 | Low | 11:19:26 - 11:35:53 | 9749 |
| Kamloops | 11:28:41 | -14.7 | AT | Up | 23.1 | 183.5 | Low | 11:20:27 - 11:36:54 | 9407 |
| Kelowna | 11:28:34 | -14.7 | AT | Up | 23.9 | 184.5 | Low | 11:20:21 - 11:36:48 | 9395 |
| Peachland | 11:28:37 | -15.0 | AT | Up | 24.0 | 184.2 | Low | 11:20:24 - 11:36:51 | 9384 |
| Summerland | 11:28:35 | -15.0 | AT | Up | 24.1 | 184.3 | Low | 11:20:22 - 11:36:49 | 9380 |
| Penticton | 11:28:35 | -15.0 | AT | Up | 24.2 | 184.4 | Low | 11:20:22 - 11:36:49 | 9380 |
| Oliver | 11:28:35 | -15.2 | AT | Up | 24.5 | 184.4 | Low | 11:20:22 - 11:36:49 | 9365 |
| Anarchist Mountain Observatory | 11:28:32 | -15.2 | AT | Up | 24.7 | 184.6 | Low | 11:20:18 - 11:36:45 | 9363 |
| Tonasket | 11:28:34 | -15.4 | AT | Up | 25.0 | 184.5 | Low | 11:20:20 - 11:36:47 | 9348 |
| Okanogan | 11:28:34 | -15.7 | AT | Up | 25.4 | 184.4 | Low | 11:20:20 - 11:36:47 | 9330 |
| Brewster | 11:28:32 | -15.9 | AT | Up | 25.6 | 184.2 | Low | 11:20:18 - 11:36:45 | 9313 |
| Manson/Chelan | 11:28:35 | -16.3 | AT | Up | 25.9 | 183.8 | Low | 11:20:22 - 11:36:49 | 9295 |
| Dunrhomin | 11:27:04 | -10.8 | NT | Up | 31.1 | 200.5 | Up | 11:18:50 - 11:35:17 | 9278 |
| Wenatchee | 11:28:35 | -16.6 | AT | Up | 26.3 | 183.6 | Low | 11:20:22 - 11:36:49 | 9270 |
| CU-SBO | 11:27:05 | -11.0 | NT | Up | 31.4 | 200.4 | Up | 11:18:51 - 11:35:18 | 9263 |
| Ellensburg | 11:28:36 | -17.0 | AT | Up | 26.8 | 183.4 | Low | 11:20:22 - 11:36:49 | 9246 |
| Victoria | 11:28:53 | -17.6 | AT | Up | 25.3 | 180.4 | Low | 11:20:39 - 11:37:06 | 9243 |
| PNWRO | 11:28:27 | -16.7 | AT | Up | 27.7 | 185.2 | Low | 11:20:13 - 11:36:40 | 9241 |
| Yakima | 11:28:35 | -17.2 | AT | Up | 27.2 | 183.4 | Low | 11:20:21 - 11:36:48 | 9227 |
| Toppenish/White Swan | 11:28:33 | -17.3 | AT | Up | 27.4 | 183.6 | Low | 11:20:19 - 11:36:46 | 9221 |
| Goldendale | 11:28:36 | -17.8 | AT | Up | 28.0 | 183.2 | Low | 11:20:22 - 11:36:49 | 9184 |
| The Dalles | 11:28:38 | -18.2 | Dark | Up | 28.2 | 182.8 | Low | 11:20:24 - 11:36:51 | 9163 |
| Maupin | 11:28:37 | -18.4 | Dark | Up | 28.6 | 182.9 | Low | 11:20:24 - 11:36:51 | 9146 |
| Sisters | 11:28:35 | -19.2 | Dark | Up | 29.5 | 182.4 | Low | 11:20:22 - 11:36:49 | 9090 |
| Bend | 11:28:34 | -19.2 | Dark | Up | 29.7 | 182.7 | Low | 11:20:20 - 11:36:47 | 9085 |
| Oregon Observatory | 11:28:34 | -19.3 | Dark | Up | 29.9 | 182.5 | Low | 11:20:21 - 11:36:48 | 9073 |
| North Lake | 11:28:31 | -19.4 | Dark | Up | 30.5 | 183.1 | Up | 11:20:17 - 11:36:44 | 9054 |
| Lakeview | 11:28:26 | -19.7 | Dark | Up | 31.6 | 183.8 | Up | 11:20:13 - 11:36:40 | 9013 |
| Chiloquin | 11:28:35 | -20.4 | Dark | Up | 31.2 | 182.1 | Up | 11:20:22 - 11:36:49 | 8992 |
| Cedarville | 11:28:25 | -20.0 | Dark | Up | 32.2 | 184.0 | Up | 11:20:11 - 11:36:38 | 8983 |
| Klamath Falls | 11:28:34 | -20.5 | Dark | Up | 31.6 | 182.2 | Up | 11:20:20 - 11:36:47 | 8976 |
| Fall River/Burney | 11:28:30 | -21.0 | Dark | Up | 32.7 | 182.6 | Up | 11:20:16 - 11:36:43 | 8922 |
| Susanville | 11:28:25 | -20.9 | Dark | Up | 33.3 | 183.5 | Up | 11:20:11 - 11:36:38 | 8908 |
| Gimple | 11:28:26 | -21.2 | Dark | Up | 33.6 | 183.3 | Up | 11:20:12 - 11:36:39 | 8886 |
| Greenville | 11:28:27 | -21.2 | Dark | Up | 33.6 | 183.2 | Up | 11:20:13 - 11:36:40 | 8884 |
| Reno | 11:28:19 | -20.9 | Dark | Up | 34.2 | 184.5 | Up | 11:20:06 - 11:36:33 | 8881 |
| Portola | 11:28:23 | -21.1 | Dark | Up | 33.9 | 183.7 | Up | 11:20:09 - 11:36:36 | 8879 |
| Quincy | 11:28:26 | -21.3 | Dark | Up | 33.8 | 183.2 | Up | 11:20:13 - 11:36:40 | 8872 |
| Yerington | 11:28:17 | -20.7 | Dark | Up | 34.7 | 185.2 | Up | 11:20:03 - 11:36:30 | 8868 |
| Tonopah | 11:28:04 | -20.0 | Dark | Up | 35.4 | 187.5 | Up | 11:19:50 - 11:36:17 | 8868 |
| Carson City | 11:28:19 | -21.0 | Dark | Up | 34.5 | 184.5 | Up | 11:20:06 - 11:36:33 | 8861 |
| Hawthorne | 11:28:12 | -20.7 | Dark | Up | 35.1 | 185.9 | Up | 11:19:59 - 11:36:26 | 8855 |
| Gardnerville | 11:28:21 | -21.1 | Dark | Up | 34.8 | 184.6 | Up | 11:20:08 - 11:36:35 | 8849 |
| Indian Springs | 11:27:51 | -19.7 | Dark | Up | 36.7 | 189.4 | Up | 11:19:37 - 11:36:04 | 8820 |
| Beatty | 11:27:58 | -20.3 | Dark | Up | 36.5 | 188.2 | Up | 11:19:45 - 11:36:12 | 8810 |
| Lee Vining | 11:28:13 | -21.3 | Dark | Up | 35.7 | 185.3 | Up | 11:20:00 - 11:36:27 | 8809 |
| Henderson | 11:27:47 | -19.5 | Dark | Up | 37.2 | 190.3 | Up | 11:19:33 - 11:36:00 | 8806 |
| Patrick | 11:27:38 | -19.0 | Dark | Up | 37.6 | 191.7 | Up | 11:19:24 - 11:35:51 | 8798 |
| Bishop | 11:28:03 | -21.1 | Dark | Up | 36.2 | 186.2 | Up | 11:19:50 - 11:36:17 | 8793 |
| Kingman/Dolan Springs | 11:27:39 | -19.3 | Dark | Up | 37.9 | 191.5 | Up | 11:19:26 - 11:35:53 | 8780 |
| Laughlin/Bullhead City | 11:27:42 | -19.6 | Dark | Up | 38.0 | 190.9 | Up | 11:19:29 - 11:35:56 | 8764 |
| Mohave Valley | 11:27:43 | -19.8 | Dark | Up | 38.2 | 191.0 | Up | 11:19:29 - 11:35:56 | 8747 |
| George/Scottsdale | 11:27:24 | -18.4 | Dark | Up | 38.9 | 194.3 | Up | 11:19:10 - 11:35:37 | 8746 |
| Lake Havasu City | 11:27:41 | -19.8 | Dark | Up | 38.6 | 191.3 | Up | 11:19:27 - 11:35:54 | 8729 |
| Parker | 11:27:41 | -19.9 | Dark | Up | 38.9 | 191.4 | Up | 11:19:27 - 11:35:54 | 8707 |
| Idyllwild | 11:27:51 | -21.8 | Dark | Up | 39.7 | 188.5 | Up | 11:19:37 - 11:36:04 | 8614 |
| Calipatria | 11:27:43 | -21.3 | Dark | Up | 40.1 | 190.1 | Up | 11:19:30 - 11:35:57 | 8607 |
| Yuma | 11:27:38 | -20.8 | Dark | Up | 40.4 | 191.2 | Up | 11:19:24 - 11:35:51 | 8604 |
| Wildwood | 11:28:02 | -23.0 | Dark | Up | 39.5 | 186.2 | Up | 11:19:49 - 11:36:16 | 8582 |
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 469987, (2022/04/15 11:27UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 11.15 62 35Eta Oph 17:10:22.7 -15:43:29 2.6 5.37 69 PPM 232198 16:49:27.7 -15:40:05 6.3 0.60 64 PPM 232183 16:48:28.2 -16:20:10 7.8 0.19 64 469987 16:48:06.3 -16:10:02 15.1 64 Positions are for J2000
Event circumstances last updated at 2022/03/12 01:37:02 UT
Marc W. Buie, Southwest Research Institute