Event between (138537) 00OK67 and star GA0940:00071146 with event index number of 2232088
Geocentric closest approach at 2028/09/08 04:20:30 UTC
J2000 position of star is 00:46:16.9 +05:42:40
Equinox of date position of star is 00:47:28.0 +05:50:10
Stellar brightness G=13.8,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 20 degrees from the moon.
Moon is 85% illuminated.
TNO apparent brightness V=22.3
[RECON map]
TNO is 40.1 AU from the Sun
and 39.2 AU from the Earth.
The TNO is moving 21.5
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 126 seconds.
The 1-sigma cross-track error in the shadow position is
2132 km.
The sky-plane scale is
28423.3 km/arcsec.
The TNO has an absolute magnitude Hv=6.2
Diameter=380.2 km assuming a 5% albedo -- 16.2 sec chord
Diameter=155.2 km assuming a 30% albedo -- 6.6 sec chord
Dynamical classification is CLASSICAL
Star training set for 138537, (2028/09/08 04:23UT) Object RA Dec mag sep mel Algenib 00:14:43.0 +15:20:34 2.8 12.47 24 96 G. Psc 00:49:53.1 +05:25:47 5.8 0.69 19 PPM 143866 00:47:34.9 +06:14:49 8.0 0.38 19 PPM 143870 00:47:48.6 +05:55:00 10.0 0.05 19 138537 00:47:45.9 +05:52:03 13.8 19 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 0.0 km
RECON observability=0.1 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 | 04:22:02 | -17.1 | AT | Up | 11.6 | 95.2 | Really Low | 04:11:01 - 04:33:02 | 8621 |
| Kelowna | 04:22:05 | -18.0 | Dark | Up | 12.2 | 95.7 | Really Low | 04:11:05 - 04:33:06 | 8580 |
| Peachland | 04:22:06 | -17.9 | AT | Up | 12.1 | 95.5 | Really Low | 04:11:06 - 04:33:07 | 8580 |
| Victoria | 04:22:13 | -16.5 | AT | Up | 9.8 | 92.4 | Really Low | 04:11:13 - 04:33:14 | 8573 |
| Summerland | 04:22:06 | -18.1 | Dark | Up | 12.1 | 95.5 | Really Low | 04:11:06 - 04:33:07 | 8573 |
| Penticton | 04:22:07 | -18.2 | Dark | Up | 12.2 | 95.6 | Really Low | 04:11:07 - 04:33:08 | 8569 |
| Oliver | 04:22:09 | -18.4 | Dark | Up | 12.3 | 95.5 | Really Low | 04:11:08 - 04:33:09 | 8555 |
| Anarchist Mountain Observatory | 04:22:10 | -18.6 | Dark | Up | 12.4 | 95.6 | Really Low | 04:11:09 - 04:33:10 | 8546 |
| Nikitin | 04:18:44 | 19.2 | Sun up | Up | -9.5 | 180.8 | Not Up | 04:07:43 - 04:29:44 | 8544 |
| Okanogan | 04:22:12 | -18.8 | Dark | Up | 12.3 | 95.3 | Really Low | 04:11:12 - 04:33:13 | 8523 |
| Brewster | 04:22:14 | -18.8 | Dark | Up | 12.2 | 95.1 | Really Low | 04:11:14 - 04:33:15 | 8514 |
| Manson/Chelan | 04:22:16 | -18.7 | Dark | Up | 12.0 | 94.8 | Really Low | 04:11:15 - 04:33:16 | 8510 |
| Wenatchee | 04:22:18 | -18.9 | Dark | Up | 11.9 | 94.6 | Really Low | 04:11:17 - 04:33:18 | 8492 |
| Ellensburg | 04:22:19 | -19.0 | Dark | Up | 11.8 | 94.3 | Really Low | 04:11:19 - 04:33:20 | 8477 |
| Sleaford | 04:21:44 | -23.2 | Dark | Up | 20.1 | 107.3 | Low | 04:10:43 - 04:32:44 | 8470 |
| Yakima | 04:22:21 | -19.2 | Dark | Up | 11.8 | 94.2 | Really Low | 04:11:21 - 04:33:22 | 8460 |
| Toppenish/White Swan | 04:22:22 | -19.4 | Dark | Up | 12.0 | 94.3 | Really Low | 04:11:21 - 04:33:22 | 8448 |
| The Dalles | 04:22:26 | -19.3 | Dark | Up | 11.5 | 93.6 | Really Low | 04:11:26 - 04:33:27 | 8423 |
| PNWRO | 04:22:24 | -20.5 | Dark | Up | 13.1 | 95.3 | Really Low | 04:11:23 - 04:33:24 | 8413 |
| Maupin | 04:22:29 | -19.6 | Dark | Up | 11.6 | 93.6 | Really Low | 04:11:28 - 04:33:29 | 8403 |
| Sisters | 04:22:33 | -19.8 | Dark | Up | 11.3 | 93.1 | Really Low | 04:11:32 - 04:33:33 | 8369 |
| Bend | 04:22:34 | -20.1 | Dark | Up | 11.5 | 93.2 | Really Low | 04:11:33 - 04:33:34 | 8354 |
| Oregon Observatory | 04:22:35 | -20.1 | Dark | Up | 11.4 | 93.1 | Really Low | 04:11:34 - 04:33:35 | 8348 |
| Chiloquin | 04:22:41 | -20.4 | Dark | Up | 11.2 | 92.5 | Really Low | 04:11:41 - 04:33:42 | 8288 |
| Klamath Falls | 04:22:43 | -20.7 | Dark | Up | 11.3 | 92.5 | Really Low | 04:11:42 - 04:33:43 | 8270 |
| Cedarville | 04:22:45 | -22.1 | Dark | Up | 12.5 | 93.5 | Really Low | 04:11:44 - 04:33:45 | 8213 |
| Fall River/Burney | 04:22:48 | -21.5 | Dark | Up | 11.7 | 92.6 | Really Low | 04:11:47 - 04:33:48 | 8204 |
| Greenville | 04:22:52 | -22.2 | Dark | Up | 12.0 | 92.7 | Really Low | 04:11:51 - 04:33:52 | 8149 |
| Gimple | 04:22:51 | -22.3 | Dark | Up | 12.1 | 92.7 | Really Low | 04:11:51 - 04:33:52 | 8148 |
| Quincy | 04:22:52 | -22.3 | Dark | Up | 12.1 | 92.6 | Really Low | 04:11:52 - 04:33:53 | 8138 |
| Portola | 04:22:53 | -22.7 | Dark | Up | 12.4 | 92.9 | Really Low | 04:11:52 - 04:33:53 | 8125 |
| Reno | 04:22:54 | -23.3 | Dark | Up | 13.0 | 93.3 | Really Low | 04:11:53 - 04:33:54 | 8100 |
| Carson City | 04:22:55 | -23.5 | Dark | Up | 13.0 | 93.2 | Really Low | 04:11:55 - 04:33:56 | 8080 |
| Gardnerville | 04:22:57 | -23.7 | Dark | Up | 13.0 | 93.2 | Really Low | 04:11:56 - 04:33:57 | 8066 |
| Yerington | 04:22:56 | -24.0 | Dark | Up | 13.5 | 93.6 | Really Low | 04:11:56 - 04:33:57 | 8060 |
| Hawthorne | 04:22:58 | -24.6 | Dark | Up | 14.0 | 93.8 | Really Low | 04:11:57 - 04:33:58 | 8025 |
| Lee Vining | 04:23:00 | -24.6 | Dark | Up | 13.6 | 93.4 | Really Low | 04:12:00 - 04:34:01 | 8000 |
| Bishop | 04:23:03 | -25.4 | Dark | Up | 14.2 | 93.7 | Really Low | 04:12:02 - 04:34:03 | 7953 |
| Beatty | 04:23:03 | -26.7 | Dark | Up | 15.6 | 94.6 | Really Low | 04:12:02 - 04:34:03 | 7899 |
| Dunrhomin | 04:22:35 | -31.9 | Dark | Up | 23.9 | 103.5 | Low | 04:11:35 - 04:33:36 | 7881 |
| CU-SBO | 04:22:37 | -32.1 | Dark | Up | 23.9 | 103.3 | Low | 04:11:36 - 04:33:37 | 7869 |
| Patrick | 04:23:07 | -29.5 | Dark | Up | 18.0 | 95.9 | Really Low | 04:12:06 - 04:34:07 | 7756 |
| Laughlin/Bullhead City | 04:23:09 | -29.2 | Dark | Up | 17.5 | 95.4 | Really Low | 04:12:08 - 04:34:09 | 7753 |
| Wildwood | 04:23:16 | -26.9 | Dark | Up | 14.3 | 92.8 | Really Low | 04:12:16 - 04:34:17 | 7753 |
| Lake Havasu City | 04:23:11 | -29.7 | Dark | Up | 17.8 | 95.4 | Really Low | 04:12:11 - 04:34:12 | 7705 |
| Idyllwild | 04:23:16 | -28.4 | Dark | Up | 15.9 | 93.8 | Really Low | 04:12:16 - 04:34:17 | 7699 |
| Calipatria | 04:23:18 | -29.6 | Dark | Up | 16.9 | 94.3 | Really Low | 04:12:18 - 04:34:19 | 7636 |
| George/Scottsdale | 04:23:12 | -31.8 | Dark | Up | 19.9 | 96.6 | Really Low | 04:12:11 - 04:34:12 | 7607 |
| Yuma | 04:23:19 | -30.4 | Dark | Up | 17.7 | 94.6 | Really Low | 04:12:19 - 04:34:20 | 7591 |
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 138537, (2028/09/08 04:23UT) Object RA Dec mag sep mel Algenib 00:13:14.2 +15:11:01 2.8 12.47 24 96 G. Psc 00:48:24.1 +05:16:25 5.8 0.69 19 PPM 143866 00:46:05.8 +06:05:26 8.0 0.38 19 PPM 143870 00:46:19.6 +05:45:37 10.0 0.05 19 138537 00:46:16.9 +05:42:40 13.8 19 Positions are for J2000
Event circumstances last updated at 2022/12/05 03:26:29 UT
Marc W. Buie, Southwest Research Institute