Event between (469987) 06HJ123 and star GA0740:07712075 with event index number of 2256807
Geocentric closest approach at 2027/08/29 06:22:44 UTC
J2000 position of star is 17:21:51.0 -14:59:29
Equinox of date position of star is 17:23:11.2 -15:00:46
Stellar brightness G=15.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 139 degrees from the moon.
Moon is 9% illuminated.
Apparent brightness V=21.2
[RECON map]
Object is 31.3 AU from the Sun
and 31.0 AU from the Earth.
Apparent velocity is 3.6
km/sec on the sky relative to the star, or,
0.6 arcsec/hr.
The 1-sigma error in the time of the event is 485 seconds.
The 1-sigma cross-track error in the shadow position is
1170 km.
The sky-plane scale is
22514.0 km/arcsec.
The object has an absolute magnitude Hv=6.1
Diameter=359.8 km assuming a 5% albedo -- 100.3 sec chord
Diameter=146.9 km assuming a 30% albedo -- 40.9 sec chord
Dynamical classification is 3:2E
Star training set for 469987, (2027/08/29 06:24UT) Object RA Dec mag sep mel Antares 16:31:06.5 -26:29:27 0.9 16.75 129 35Eta Oph 17:11:58.0 -15:45:26 2.6 2.86 136 PPM 232892 17:19:55.0 -16:20:21 5.9 1.57 138 PPM 232909 17:20:32.9 -15:14:52 8.1 0.73 138 PPM 232981 17:23:31.5 -15:04:37 8.7 0.06 139 469987 17:23:25.8 -15:00:59 15.2 139 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
1.9 sigma about the mid-time.
The median site spacing is 32.2 km
RECON observability=0.4 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) |
| Kamloops | 05:53:07 | -23.7 | Dark | Down | 13.6 | 224.3 | Really Low | 05:38:07 - 06:08:07 | -5106 |
| Victoria | 05:53:16 | -24.2 | Dark | Down | 16.5 | 222.0 | Really Low | 05:38:16 - 06:08:16 | -5124 |
| Peachland | 05:53:02 | -24.6 | Dark | Down | 14.0 | 225.0 | Really Low | 05:38:02 - 06:08:02 | -5209 |
| Kelowna | 05:53:02 | -24.7 | Dark | Down | 13.8 | 225.2 | Really Low | 05:38:02 - 06:08:02 | -5214 |
| Summerland | 05:53:04 | -24.8 | Dark | Down | 14.1 | 225.1 | Really Low | 05:38:04 - 06:08:04 | -5226 |
| Penticton | 05:53:02 | -24.9 | Dark | Down | 14.1 | 225.2 | Really Low | 05:38:02 - 06:08:02 | -5236 |
| Oliver | 05:53:03 | -25.2 | Dark | Down | 14.3 | 225.3 | Really Low | 05:38:03 - 06:08:03 | -5265 |
| Anarchist Mountain Observatory | 05:53:02 | -25.4 | Dark | Down | 14.3 | 225.5 | Really Low | 05:38:02 - 06:08:02 | -5288 |
| Okanogan | 05:53:02 | -25.8 | Dark | Down | 14.9 | 225.4 | Really Low | 05:38:02 - 06:08:02 | -5329 |
| Manson/Chelan | 05:53:05 | -26.0 | Dark | Down | 15.5 | 225.0 | Really Low | 05:38:05 - 06:08:05 | -5340 |
| Brewster | 05:53:09 | -26.0 | Dark | Down | 15.2 | 225.3 | Really Low | 05:38:09 - 06:08:09 | -5341 |
| Wenatchee | 05:53:03 | -26.3 | Dark | Down | 15.9 | 224.9 | Really Low | 05:38:03 - 06:08:03 | -5369 |
| Ellensburg | 05:53:05 | -26.6 | Dark | Down | 16.3 | 224.8 | Really Low | 05:38:05 - 06:08:05 | -5391 |
| Yakima | 05:53:09 | -26.9 | Dark | Down | 16.6 | 224.9 | Really Low | 05:38:09 - 06:08:09 | -5423 |
| Toppenish/White Swan | 05:53:14 | -27.2 | Dark | Down | 16.7 | 225.1 | Really Low | 05:38:14 - 06:08:14 | -5450 |
| The Dalles | 05:53:16 | -27.5 | Dark | Down | 17.6 | 224.6 | Really Low | 05:38:16 - 06:08:16 | -5471 |
| Maupin | 05:53:10 | -27.8 | Dark | Down | 17.9 | 224.8 | Really Low | 05:38:10 - 06:08:10 | -5510 |
| Sisters | 05:53:19 | -28.3 | Dark | Down | 18.7 | 224.6 | Really Low | 05:38:19 - 06:08:19 | -5554 |
| PNWRO | 05:53:02 | -28.0 | Dark | Down | 16.2 | 226.5 | Really Low | 05:38:02 - 06:08:02 | -5557 |
| Bend | 05:53:19 | -28.6 | Dark | Down | 18.7 | 224.9 | Really Low | 05:38:19 - 06:08:19 | -5587 |
| Oregon Observatory | 05:53:23 | -28.7 | Dark | Down | 18.9 | 224.8 | Really Low | 05:38:23 - 06:08:23 | -5594 |
| Sleaford | 05:52:23 | -26.6 | Dark | Down | 5.9 | 236.3 | Really Low | 05:37:23 - 06:07:23 | -5603 |
| Chiloquin | 05:53:25 | -29.5 | Dark | Down | 20.1 | 224.8 | Low | 05:38:25 - 06:08:25 | -5677 |
| Klamath Falls | 05:53:22 | -29.8 | Dark | Down | 20.3 | 224.9 | Low | 05:38:22 - 06:08:22 | -5709 |
| Fall River/Burney | 05:53:30 | -31.0 | Dark | Down | 20.9 | 225.6 | Low | 05:38:30 - 06:08:30 | -5826 |
| Cedarville | 05:53:23 | -31.1 | Dark | Down | 19.9 | 226.5 | Really Low | 05:38:23 - 06:08:23 | -5856 |
| Greenville | 05:53:33 | -31.9 | Dark | Down | 21.3 | 226.3 | Low | 05:38:33 - 06:08:33 | -5926 |
| Gimple | 05:53:37 | -31.9 | Dark | Down | 21.2 | 226.4 | Low | 05:38:37 - 06:08:37 | -5931 |
| Quincy | 05:53:37 | -32.0 | Dark | Down | 21.4 | 226.3 | Low | 05:38:37 - 06:08:37 | -5943 |
| Portola | 05:53:26 | -32.4 | Dark | Down | 21.2 | 226.7 | Low | 05:38:26 - 06:08:26 | -5980 |
| Reno | 05:53:30 | -32.9 | Dark | Down | 21.0 | 227.4 | Low | 05:38:30 - 06:08:30 | -6040 |
| Carson City | 05:53:23 | -33.2 | Dark | Down | 21.3 | 227.5 | Low | 05:38:23 - 06:08:23 | -6071 |
| Gardnerville | 05:53:30 | -33.4 | Dark | Down | 21.4 | 227.6 | Low | 05:38:30 - 06:08:30 | -6094 |
| Yerington | 05:53:16 | -33.6 | Dark | Down | 21.1 | 228.0 | Low | 05:38:16 - 06:08:16 | -6123 |
| Hawthorne | 05:53:16 | -34.2 | Dark | Down | 21.1 | 228.6 | Low | 05:38:16 - 06:08:16 | -6192 |
| Lee Vining | 05:53:25 | -34.5 | Dark | Down | 21.7 | 228.4 | Low | 05:38:25 - 06:08:25 | -6211 |
| Bishop | 05:53:22 | -35.3 | Dark | Down | 21.7 | 229.2 | Low | 05:38:22 - 06:08:22 | -6304 |
| Beatty | 05:53:30 | -36.4 | Dark | Down | 21.0 | 230.6 | Low | 05:38:30 - 06:08:30 | -6437 |
| Wildwood | 05:53:49 | -37.8 | Dark | Down | 23.9 | 230.1 | Low | 05:38:49 - 06:08:49 | -6566 |
| Idyllwild | 05:53:46 | -39.0 | Dark | Down | 22.9 | 231.7 | Low | 05:38:46 - 06:08:46 | -6709 |
| Laughlin/Bullhead City | 05:53:30 | -38.9 | Dark | Down | 20.7 | 232.9 | Low | 05:38:30 - 06:08:30 | -6710 |
| Patrick | 05:53:19 | -39.0 | Dark | Down | 20.1 | 233.3 | Low | 05:38:19 - 06:08:19 | -6729 |
| Dunrhomin | 05:52:27 | -37.8 | Dark | Down | 11.8 | 238.4 | Really Low | 05:37:27 - 06:07:27 | -6737 |
| Nikitin | 05:52:30 | -38.0 | Dark | Down | 11.9 | 238.5 | Really Low | 05:37:30 - 06:07:30 | -6753 |
| CU-SBO | 05:52:20 | -38.0 | Dark | Down | 12.0 | 238.4 | Really Low | 05:37:20 - 06:07:20 | -6755 |
| Lake Havasu City | 05:53:30 | -39.5 | Dark | Down | 20.9 | 233.3 | Low | 05:38:30 - 06:08:30 | -6783 |
| Calipatria | 05:53:46 | -40.1 | Dark | Down | 22.5 | 232.8 | Low | 05:38:46 - 06:08:46 | -6831 |
| Yuma | 05:53:46 | -40.9 | Dark | Down | 22.1 | 233.6 | Low | 05:38:46 - 06:08:46 | -6921 |
| George/Scottsdale | 05:53:17 | -41.3 | Dark | Down | 19.7 | 235.3 | Really Low | 05:38:17 - 06:08:17 | -6990 |
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, (2027/08/29 06:24UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 16.75 129 35Eta Oph 17:10:22.7 -15:43:29 2.6 2.86 136 PPM 232892 17:18:19.3 -16:18:42 5.9 1.57 138 PPM 232909 17:18:58.0 -15:13:15 8.1 0.73 138 PPM 232981 17:21:56.6 -15:03:07 8.7 0.06 139 469987 17:21:51.0 -14:59:29 15.2 139 Positions are for J2000
Event circumstances last updated at 2023/05/29 03:02:21 UT
Marc W. Buie, Southwest Research Institute