Event between (87269) 00OO67 and star GA0900:00405262 with event index number of 1777156
Geocentric closest approach at 2021/09/15 10:13:14 UTC
J2000 position of star is 04:25:41.0 +01:26:13
Equinox of date position of star is 04:26:48.2 +01:29:06
Stellar brightness G=15.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 136 degrees from the moon.
Moon is 67% illuminated.
TNO apparent brightness V=24.1
[RECON map]
TNO is 29.8 AU from the Sun
and 29.5 AU from the Earth.
The TNO is moving 9.6
km/sec on the sky relative to the star, or,
1.6 arcsec/hr.
The 1-sigma error in the time of the event is 226 seconds.
The 1-sigma cross-track error in the shadow position is
2748 km.
The sky-plane scale is
21389.8 km/arcsec.
The TNO has an absolute magnitude Hv=9.2
Diameter=87.1 km assuming a 5% albedo -- 9.0 sec chord
Diameter=35.6 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is CENTAURS
Star training set for 87269, (2021/09/15 10:13UT) Object RA Dec mag sep mel Aldebaran 04:37:10.1 +16:33:04 0.8 15.28 146 67Bet Eri 05:08:55.1 -05:03:36 2.8 12.39 139 PPM 147584 04:29:39.5 +01:25:38 5.5 0.72 136 PPM 147539 04:27:03.4 +01:04:47 7.5 0.41 136 PPM 147538 04:27:01.2 +01:09:49 9.5 0.33 136 PPM 147548 04:27:33.5 +01:43:34 10.3 0.31 136 87269 04:26:48.4 +01:29:06 15.1 136 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
4.0 sigma about the mid-time.
The median site spacing is 5.3 km
RECON observability=1.0 and success probability=10.7%
Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
CPSLO | 10:08:06 | -41.1 | Dark | Down | 39.4 | 122.9 | Up | 09:53:06 - 10:23:06 | -1505 |
Quincy | 10:07:21 | -38.1 | Dark | Down | 36.5 | 125.4 | Up | 09:52:21 - 10:22:21 | -1605 |
Fall River/Burney | 10:07:09 | -37.5 | Dark | Down | 35.6 | 125.6 | Up | 09:52:09 - 10:22:09 | -1610 |
Greenville | 10:07:18 | -37.9 | Dark | Down | 36.4 | 125.5 | Up | 09:52:18 - 10:22:18 | -1610 |
Gimple | 10:07:18 | -37.9 | Dark | Down | 36.5 | 125.6 | Up | 09:52:18 - 10:22:18 | -1616 |
Wildwood | 10:08:14 | -40.7 | Dark | Down | 41.5 | 124.0 | Up | 09:53:14 - 10:23:14 | -1622 |
Klamath Falls | 10:06:59 | -36.8 | Dark | Down | 34.6 | 125.8 | Up | 09:51:59 - 10:21:59 | -1624 |
Chiloquin | 10:06:57 | -36.6 | Dark | Down | 34.4 | 125.9 | Up | 09:51:57 - 10:21:57 | -1630 |
Portola | 10:07:21 | -37.9 | Dark | Down | 36.9 | 125.8 | Up | 09:52:21 - 10:22:21 | -1632 |
Susanville | 10:07:15 | -37.6 | Dark | Down | 36.4 | 126.0 | Up | 09:52:15 - 10:22:15 | -1637 |
Gardnerville | 10:07:29 | -38.1 | Dark | Down | 37.9 | 126.0 | Up | 09:52:29 - 10:22:29 | -1654 |
Carson City | 10:07:28 | -38.0 | Dark | Down | 37.7 | 126.1 | Up | 09:52:28 - 10:22:28 | -1658 |
Reno | 10:07:22 | -37.8 | Dark | Down | 37.5 | 126.3 | Up | 09:52:22 - 10:22:22 | -1666 |
Lee Vining | 10:07:36 | -38.5 | Dark | Down | 38.9 | 126.0 | Up | 09:52:36 - 10:22:36 | -1670 |
La Pine/Gilchrist | 10:06:46 | -35.6 | Dark | Down | 33.9 | 126.8 | Up | 09:51:46 - 10:21:46 | -1689 |
Yerington | 10:07:26 | -37.8 | Dark | Down | 38.2 | 126.6 | Up | 09:52:26 - 10:22:26 | -1694 |
Oregon Observatory | 10:06:43 | -35.4 | Dark | Down | 33.8 | 127.0 | Up | 09:51:43 - 10:21:43 | -1699 |
Cedarville | 10:07:06 | -36.5 | Dark | Down | 36.0 | 127.0 | Up | 09:52:06 - 10:22:06 | -1700 |
Bishop | 10:07:42 | -38.5 | Dark | Down | 39.7 | 126.4 | Up | 09:52:42 - 10:22:42 | -1705 |
Sisters | 10:06:39 | -35.2 | Dark | Down | 33.5 | 127.1 | Up | 09:51:39 - 10:21:39 | -1706 |
Lakeview | 10:06:57 | -36.1 | Dark | Down | 35.5 | 127.2 | Up | 09:51:57 - 10:21:57 | -1710 |
North Lake | 10:06:49 | -35.6 | Dark | Down | 34.5 | 127.2 | Up | 09:51:49 - 10:21:49 | -1710 |
Bend | 10:06:42 | -35.2 | Dark | Down | 33.8 | 127.2 | Up | 09:51:42 - 10:21:42 | -1713 |
Paisley | 10:06:53 | -35.9 | Dark | Down | 35.1 | 127.3 | Up | 09:51:53 - 10:21:53 | -1714 |
Hawthorne | 10:07:30 | -37.8 | Dark | Down | 38.8 | 126.8 | Up | 09:52:30 - 10:22:30 | -1717 |
Redmond | 10:06:40 | -35.0 | Dark | Down | 33.7 | 127.5 | Up | 09:51:40 - 10:21:40 | -1729 |
Idyllwild | 10:08:15 | -39.7 | Dark | Down | 43.0 | 125.6 | Up | 09:53:15 - 10:23:15 | -1751 |
Maupin | 10:06:31 | -34.3 | Dark | Down | 33.2 | 128.0 | Up | 09:51:31 - 10:21:31 | -1766 |
Victoria | 10:06:04 | -32.6 | Dark | Down | 29.8 | 127.2 | Low | 09:51:04 - 10:21:04 | -1768 |
The Dalles | 10:06:27 | -34.0 | Dark | Down | 32.9 | 128.1 | Up | 09:51:27 - 10:21:27 | -1776 |
Tonopah | 10:07:32 | -37.3 | Dark | Down | 40.0 | 128.0 | Up | 09:52:32 - 10:22:32 | -1802 |
Goldendale | 10:06:26 | -33.7 | Dark | Down | 32.9 | 128.6 | Up | 09:51:26 - 10:21:26 | -1804 |
Beatty | 10:07:43 | -37.8 | Dark | Down | 41.0 | 127.7 | Up | 09:52:43 - 10:22:43 | -1808 |
Calipatria | 10:08:20 | -39.3 | Dark | Down | 44.2 | 126.4 | Up | 09:53:20 - 10:23:20 | -1829 |
Yakima | 10:06:20 | -33.0 | Dark | Down | 32.6 | 129.2 | Up | 09:51:20 - 10:21:20 | -1847 |
Toppenish/White Swan | 10:06:21 | -33.1 | Dark | Down | 32.8 | 129.2 | Up | 09:51:21 - 10:21:21 | -1849 |
Ellensburg | 10:06:13 | -32.7 | Dark | Down | 32.3 | 129.4 | Up | 09:51:13 - 10:21:13 | -1864 |
Indian Springs | 10:07:46 | -37.4 | Dark | Down | 41.9 | 128.6 | Up | 09:52:46 - 10:22:46 | -1878 |
Yuma | 10:08:23 | -39.0 | Dark | Down | 45.1 | 127.0 | Up | 09:53:23 - 10:23:23 | -1890 |
Wenatchee | 10:06:10 | -32.3 | Dark | Down | 32.1 | 129.8 | Up | 09:51:10 - 10:21:10 | -1891 |
Blythe | 10:08:14 | -38.4 | Dark | Down | 44.5 | 127.7 | Up | 09:53:14 - 10:23:14 | -1907 |
Henderson | 10:07:50 | -37.3 | Dark | Down | 42.7 | 129.0 | Up | 09:52:50 - 10:22:50 | -1918 |
Pasco | 10:06:20 | -32.6 | Dark | Down | 33.5 | 130.5 | Up | 09:51:20 - 10:21:20 | -1919 |
Manson/Chelan | 10:06:06 | -31.8 | Dark | Down | 31.9 | 130.2 | Up | 09:51:06 - 10:21:06 | -1919 |
PNWRO | 10:06:23 | -32.7 | Dark | Down | 33.8 | 130.6 | Up | 09:51:23 - 10:21:23 | -1923 |
Mohave Valley | 10:08:03 | -37.7 | Dark | Down | 43.7 | 128.7 | Up | 09:53:03 - 10:23:03 | -1929 |
Laughlin/Bullhead City | 10:07:58 | -37.5 | Dark | Down | 43.5 | 128.8 | Up | 09:52:58 - 10:22:58 | -1933 |
Parker | 10:08:07 | -37.9 | Dark | Down | 44.4 | 128.4 | Up | 09:53:07 - 10:23:07 | -1937 |
Lake Havasu City | 10:08:06 | -37.7 | Dark | Down | 44.1 | 128.6 | Up | 09:53:06 - 10:23:06 | -1941 |
Brewster | 10:06:05 | -31.5 | Dark | Down | 32.0 | 130.6 | Up | 09:51:05 - 10:21:05 | -1947 |
Okanogan | 10:06:02 | -31.2 | Dark | Down | 31.9 | 130.9 | Up | 09:51:02 - 10:21:02 | -1969 |
Kingman/Dolan Springs | 10:07:57 | -37.2 | Dark | Down | 43.8 | 129.4 | Up | 09:52:57 - 10:22:57 | -1971 |
Patrick | 10:07:54 | -36.9 | Dark | Down | 43.8 | 129.7 | Up | 09:52:54 - 10:22:54 | -1989 |
Tonasket | 10:05:58 | -30.9 | Dark | Down | 31.7 | 131.2 | Up | 09:50:58 - 10:20:58 | -1990 |
Oliver | 10:05:55 | -30.6 | Dark | Down | 31.3 | 131.3 | Up | 09:50:55 - 10:20:55 | -2002 |
Anarchist Mountain Observatory | 10:05:55 | -30.6 | Dark | Down | 31.6 | 131.4 | Up | 09:50:55 - 10:20:55 | -2005 |
Summerland | 10:05:53 | -30.3 | Dark | Down | 31.0 | 131.4 | Up | 09:50:53 - 10:20:53 | -2012 |
Peachland | 10:05:50 | -30.2 | Dark | Down | 30.9 | 131.4 | Up | 09:50:50 - 10:20:50 | -2013 |
Penticton | 10:05:54 | -30.3 | Dark | Down | 31.1 | 131.5 | Up | 09:50:54 - 10:20:54 | -2016 |
Kelowna | 10:05:48 | -30.0 | Dark | Down | 30.9 | 131.7 | Up | 09:50:48 - 10:20:48 | -2033 |
Clarence Fulton | 10:05:45 | -29.7 | Dark | Down | 30.7 | 132.0 | Up | 09:50:45 - 10:20:45 | -2057 |
George/Scottsdale | 10:08:08 | -36.5 | Dark | Down | 46.2 | 130.7 | Up | 09:53:08 - 10:23:08 | -2117 |
Dunrhomin | 10:06:56 | -28.7 | Dark | Down | 44.9 | 143.0 | Up | 09:51:56 - 10:21:56 | -2713 |
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 87269, (2021/09/15 10:13UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 15.28 146 67Bet Eri 05:07:50.8 -05:05:13 2.8 12.39 139 PPM 147584 04:28:32.1 +01:22:50 5.5 0.72 136 PPM 147539 04:25:56.2 +01:01:54 7.5 0.41 136 PPM 147538 04:25:53.9 +01:06:57 9.5 0.33 136 PPM 147548 04:26:25.9 +01:40:43 10.3 0.31 136 87269 04:25:41.0 +01:26:13 15.1 136 Positions are for J2000
Event circumstances last updated at 2021/08/30 01:15:55 UT
Marc W. Buie, Southwest Research Institute