Event between (281371) 08FC76 and star GA0880:02843930 with event index number of 2457598
Geocentric closest approach at 2023/02/22 04:23:45 UTC
J2000 position of star is 07:26:20.8 -01:15:20
Equinox of date position of star is 07:27:31.0 -01:18:11
Stellar brightness G=16.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 111 degrees from the moon.
Moon is 5% illuminated.
Apparent brightness V=21.0
[RECON map]
Object is 13.5 AU from the Sun
and 12.7 AU from the Earth.
Apparent velocity is 16.5
km/sec on the sky relative to the star, or,
6.4 arcsec/hr.
The 1-sigma error in the time of the event is 56 seconds.
The 1-sigma cross-track error in the shadow position is
734 km.
The sky-plane scale is
9238.1 km/arcsec.
The object has an absolute magnitude Hv=9.5
Diameter=83.2 km assuming a 5% albedo -- 4.6 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is CENTAURR
Star training set for 281371, (2023/02/22 04:24UT) Object RA Dec mag sep mel Sirius 06:46:10.1 -16:44:56 -1.5 18.50 99 Alhena 06:39:02.9 +16:22:39 1.9 21.35 99 PPM 152483 07:23:14.8 +00:07:54 5.8 1.79 110 PPM 176912 07:27:07.2 -02:17:47 7.6 1.00 111 PPM 176927 07:28:13.3 -01:24:34 9.8 0.20 111 281371 07:27:31.3 -01:18:12 16.7 111 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 14.2 km
RECON observability=1.0 and success probability=5.5%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 04:26:01 | -35.8 | Dark | Down | 36.7 | 181.0 | Up | 04:20:51 - 04:31:12 | 3445 |
| Kamloops | 04:26:53 | -28.5 | Dark | Down | 36.8 | 163.2 | Up | 04:21:43 - 04:32:04 | 2910 |
| Kelowna | 04:26:49 | -29.4 | Dark | Down | 37.8 | 164.1 | Up | 04:21:38 - 04:31:59 | 2881 |
| Peachland | 04:26:50 | -29.2 | Dark | Down | 37.8 | 163.7 | Up | 04:21:39 - 04:32:00 | 2863 |
| Summerland | 04:26:50 | -29.3 | Dark | Down | 38.0 | 163.8 | Up | 04:21:39 - 04:32:00 | 2856 |
| Penticton | 04:26:49 | -29.4 | Dark | Down | 38.1 | 163.9 | Up | 04:21:38 - 04:31:59 | 2854 |
| Oliver | 04:26:49 | -29.5 | Dark | Down | 38.4 | 163.8 | Up | 04:21:38 - 04:31:59 | 2829 |
| Anarchist Mountain Observatory | 04:26:47 | -29.7 | Dark | Down | 38.6 | 164.0 | Up | 04:21:36 - 04:31:57 | 2824 |
| Okanogan | 04:26:47 | -29.8 | Dark | Down | 39.2 | 163.6 | Up | 04:21:37 - 04:31:58 | 2769 |
| Brewster | 04:26:48 | -29.7 | Dark | Down | 39.4 | 163.3 | Up | 04:21:37 - 04:31:58 | 2743 |
| Manson/Chelan | 04:26:50 | -29.6 | Dark | Down | 39.5 | 162.8 | Up | 04:21:39 - 04:32:00 | 2716 |
| Dunrhomin | 04:25:34 | -42.2 | Dark | Down | 48.5 | 182.2 | Up | 04:20:23 - 04:30:44 | 2681 |
| Wenatchee | 04:26:50 | -29.6 | Dark | Down | 39.9 | 162.4 | Up | 04:21:39 - 04:32:00 | 2675 |
| Nikitin | 04:25:34 | -42.3 | Dark | Down | 48.7 | 182.2 | Up | 04:20:23 - 04:30:44 | 2666 |
| CU-SBO | 04:25:33 | -42.3 | Dark | Down | 48.7 | 182.1 | Up | 04:20:23 - 04:30:44 | 2659 |
| Victoria | 04:27:03 | -27.4 | Dark | Down | 38.2 | 158.9 | Up | 04:21:52 - 04:32:13 | 2658 |
| Ellensburg | 04:26:50 | -29.6 | Dark | Down | 40.3 | 162.1 | Up | 04:21:40 - 04:32:01 | 2637 |
| PNWRO | 04:26:43 | -31.0 | Dark | Down | 41.6 | 163.9 | Up | 04:21:32 - 04:31:53 | 2618 |
| Yakima | 04:26:50 | -29.7 | Dark | Down | 40.7 | 161.9 | Up | 04:21:39 - 04:32:00 | 2606 |
| Toppenish/White Swan | 04:26:50 | -29.9 | Dark | Down | 40.9 | 162.1 | Up | 04:21:39 - 04:32:00 | 2595 |
| The Dalles | 04:26:51 | -29.6 | Dark | Down | 41.5 | 160.8 | Up | 04:21:41 - 04:32:02 | 2509 |
| Maupin | 04:26:51 | -29.8 | Dark | Down | 41.9 | 160.9 | Up | 04:21:41 - 04:32:02 | 2480 |
| Sisters | 04:26:52 | -29.7 | Dark | Down | 42.6 | 159.9 | Up | 04:21:42 - 04:32:03 | 2395 |
| Bend | 04:26:51 | -30.0 | Dark | Down | 42.9 | 160.2 | Up | 04:21:41 - 04:32:02 | 2385 |
| Oregon Observatory | 04:26:50 | -29.9 | Dark | Down | 43.0 | 160.0 | Up | 04:21:40 - 04:32:01 | 2367 |
| Chiloquin | 04:26:51 | -30.0 | Dark | Down | 44.2 | 159.0 | Up | 04:21:41 - 04:32:02 | 2247 |
| Cedarville | 04:26:43 | -31.4 | Dark | Down | 45.6 | 160.9 | Up | 04:21:33 - 04:31:54 | 2224 |
| Klamath Falls | 04:26:51 | -30.1 | Dark | Down | 44.5 | 159.0 | Up | 04:21:41 - 04:32:02 | 2223 |
| Fall River/Burney | 04:26:47 | -30.7 | Dark | Down | 45.7 | 159.1 | Up | 04:21:37 - 04:31:58 | 2140 |
| Gimple | 04:26:44 | -31.3 | Dark | Down | 46.7 | 159.4 | Up | 04:21:33 - 04:31:54 | 2085 |
| Greenville | 04:26:45 | -31.2 | Dark | Down | 46.7 | 159.3 | Up | 04:21:34 - 04:31:55 | 2082 |
| Reno | 04:26:39 | -32.2 | Dark | Down | 47.5 | 160.7 | Up | 04:21:28 - 04:31:49 | 2075 |
| Portola | 04:26:42 | -31.6 | Dark | Down | 47.1 | 159.9 | Up | 04:21:31 - 04:31:52 | 2073 |
| Quincy | 04:26:45 | -31.2 | Dark | Down | 46.9 | 159.3 | Up | 04:21:34 - 04:31:55 | 2065 |
| Yerington | 04:26:35 | -32.8 | Dark | Down | 48.2 | 161.4 | Up | 04:21:25 - 04:31:46 | 2054 |
| Carson City | 04:26:38 | -32.3 | Dark | Down | 47.9 | 160.6 | Up | 04:21:28 - 04:31:49 | 2046 |
| Hawthorne | 04:26:32 | -33.3 | Dark | Down | 48.8 | 162.0 | Up | 04:21:22 - 04:31:43 | 2035 |
| Gardnerville | 04:26:37 | -32.4 | Dark | Down | 48.1 | 160.5 | Up | 04:21:27 - 04:31:48 | 2028 |
| Beatty | 04:26:21 | -35.1 | Dark | Down | 50.7 | 164.2 | Up | 04:21:10 - 04:31:31 | 1972 |
| Lee Vining | 04:26:33 | -33.1 | Dark | Down | 49.2 | 161.1 | Up | 04:21:23 - 04:31:44 | 1970 |
| Patrick | 04:26:04 | -37.7 | Dark | Down | 52.7 | 168.2 | Up | 04:20:54 - 04:31:15 | 1961 |
| Bishop | 04:26:29 | -33.7 | Dark | Down | 49.9 | 161.9 | Up | 04:21:18 - 04:31:39 | 1947 |
| Laughlin/Bullhead City | 04:26:07 | -37.2 | Dark | Down | 52.9 | 167.0 | Up | 04:20:57 - 04:31:18 | 1912 |
| George/Scottsdale | 04:25:51 | -39.7 | Dark | Down | 54.7 | 171.1 | Up | 04:20:41 - 04:31:02 | 1900 |
| Lake Havasu City | 04:26:05 | -37.6 | Dark | Down | 53.6 | 167.2 | Up | 04:20:54 - 04:31:15 | 1866 |
| Idyllwild | 04:26:15 | -35.9 | Dark | Down | 53.8 | 163.1 | Up | 04:21:05 - 04:31:26 | 1705 |
| Calipatria | 04:26:08 | -36.9 | Dark | Down | 54.6 | 164.8 | Up | 04:20:57 - 04:31:18 | 1700 |
| Yuma | 04:26:03 | -37.7 | Dark | Down | 55.2 | 166.1 | Up | 04:20:52 - 04:31:13 | 1699 |
| Wildwood | 04:26:25 | -34.3 | Dark | Down | 53.0 | 160.2 | Up | 04:21:14 - 04:31:35 | 1659 |
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 281371, (2023/02/22 04:24UT) Object RA Dec mag sep mel Sirius 06:45:08.0 -16:43:24 -1.5 18.50 99 Alhena 06:37:42.8 +16:23:57 1.9 21.35 99 PPM 152483 07:22:03.5 +00:10:37 5.8 1.79 110 PPM 176912 07:25:57.2 -02:14:56 7.6 1.00 111 PPM 176927 07:27:02.8 -01:21:40 9.8 0.20 111 281371 07:26:20.8 -01:15:20 16.7 111 Positions are for J2000
Event circumstances last updated at 2023/01/09 03:33:43 UT
Marc W. Buie, Southwest Research Institute