Event between (469708) 05GE187 and star GA0840:10861079 with event index number of 1857202
Geocentric closest approach at 2028/04/19 11:26:48 UTC
J2000 position of star is 18:43:56.0 -05:12:04
Equinox of date position of star is 18:45:06.6 -05:10:38
Stellar brightness G=15.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 50 degrees from the moon.
Moon is 25% illuminated.
TNO apparent brightness V=22.1
[RECON map]
TNO is 26.7 AU from the Sun
and 26.4 AU from the Earth.
The TNO is moving 9.4
km/sec on the sky relative to the star, or,
1.8 arcsec/hr.
The 1-sigma error in the time of the event is 138 seconds.
The 1-sigma cross-track error in the shadow position is
3605 km.
The sky-plane scale is
19125.7 km/arcsec.
The TNO has an absolute magnitude Hv=7.6
Diameter=184.5 km assuming a 5% albedo -- 19.6 sec chord
Diameter=75.3 km assuming a 30% albedo -- 8.0 sec chord
Dynamical classification is 3:2E
Star training set for 469708, (2028/04/19 11:27UT) Object RA Dec mag sep mel Antares 16:31:08.9 -26:29:32 0.9 38.48 81 60Bet Oph 17:44:52.3 +04:33:27 2.8 17.98 67 Bet Sct 18:48:40.6 -04:42:55 4.2 0.93 49 PPM 202097 18:46:15.2 -05:09:24 8.4 0.20 50 PPM 202085 18:45:38.3 -04:58:30 9.0 0.20 50 469708 18:45:26.4 -05:10:14 15.5 50 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 7.3 km
RECON observability=0.7 and success probability=4.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 11:36:03 | -3.8 | CT | Up | 32.6 | 174.3 | Up | 11:24:02 - 11:48:04 | -571 |
| Dunrhomin | 11:34:43 | -8.2 | NT | Up | 44.4 | 173.9 | Up | 11:22:42 - 11:46:44 | -868 |
| Kelowna | 11:36:22 | -12.2 | AT | Up | 32.7 | 158.2 | Up | 11:24:21 - 11:48:23 | -1536 |
| Kamloops | 11:36:28 | -12.2 | AT | Up | 31.7 | 157.4 | Up | 11:24:27 - 11:48:29 | -1555 |
| Penticton | 11:36:20 | -12.5 | AT | Up | 33.0 | 158.0 | Up | 11:24:19 - 11:48:21 | -1557 |
| Peachland | 11:36:22 | -12.5 | AT | Up | 32.7 | 157.9 | Up | 11:24:21 - 11:48:23 | -1561 |
| Summerland | 11:36:21 | -12.5 | AT | Up | 32.9 | 157.9 | Up | 11:24:20 - 11:48:22 | -1562 |
| Anarchist Mountain Observatory | 11:36:17 | -12.7 | AT | Up | 33.5 | 158.1 | Up | 11:24:16 - 11:48:18 | -1569 |
| Oliver | 11:36:18 | -12.7 | AT | Up | 33.3 | 157.9 | Up | 11:24:17 - 11:48:19 | -1574 |
| Tonasket | 11:36:15 | -12.9 | AT | Up | 33.8 | 157.9 | Up | 11:24:14 - 11:48:16 | -1588 |
| Okanogan | 11:36:14 | -13.2 | AT | Up | 34.1 | 157.7 | Up | 11:24:13 - 11:48:15 | -1614 |
| Brewster | 11:36:13 | -13.4 | AT | Up | 34.3 | 157.4 | Up | 11:24:12 - 11:48:14 | -1641 |
| George/Scottsdale | 11:34:13 | -15.9 | AT | Up | 49.7 | 162.6 | Up | 11:22:12 - 11:46:14 | -1664 |
| Manson/Chelan | 11:36:12 | -13.8 | AT | Up | 34.4 | 156.9 | Up | 11:24:11 - 11:48:13 | -1676 |
| PNWRO | 11:35:58 | -14.1 | AT | Up | 36.4 | 157.8 | Up | 11:23:57 - 11:47:59 | -1678 |
| Wenatchee | 11:36:10 | -14.1 | AT | Up | 34.7 | 156.5 | Up | 11:24:09 - 11:48:11 | -1710 |
| Ellensburg | 11:36:08 | -14.5 | AT | Up | 35.1 | 156.2 | Up | 11:24:07 - 11:48:09 | -1745 |
| Patrick | 11:34:34 | -16.5 | AT | Up | 47.6 | 160.4 | Up | 11:22:33 - 11:46:35 | -1764 |
| Toppenish/White Swan | 11:36:04 | -14.8 | AT | Up | 35.7 | 156.1 | Up | 11:24:03 - 11:48:05 | -1765 |
| Yakima | 11:36:06 | -14.7 | AT | Up | 35.4 | 156.0 | Up | 11:24:05 - 11:48:07 | -1766 |
| Kingman/Dolan Springs | 11:34:30 | -16.8 | AT | Up | 47.7 | 160.1 | Up | 11:22:29 - 11:46:31 | -1790 |
| Goldendale | 11:36:02 | -15.3 | AT | Up | 36.0 | 155.5 | Up | 11:24:01 - 11:48:03 | -1822 |
| Henderson | 11:34:40 | -17.0 | AT | Up | 46.7 | 159.1 | Up | 11:22:39 - 11:46:41 | -1830 |
| Laughlin/Bullhead City | 11:34:33 | -17.1 | AT | Up | 47.6 | 159.3 | Up | 11:22:32 - 11:46:34 | -1834 |
| Lake Havasu City | 11:34:25 | -17.3 | AT | Up | 48.3 | 159.4 | Up | 11:22:24 - 11:46:26 | -1842 |
| Mohave Valley | 11:34:29 | -17.3 | AT | Up | 47.8 | 159.2 | Up | 11:22:28 - 11:46:30 | -1846 |
| Parker | 11:34:22 | -17.4 | AT | Up | 48.6 | 159.3 | Up | 11:22:21 - 11:46:23 | -1855 |
| The Dalles | 11:36:01 | -15.7 | AT | Up | 36.1 | 155.0 | Up | 11:24:00 - 11:48:02 | -1858 |
| Victoria | 11:36:23 | -15.1 | AT | Up | 32.9 | 153.4 | Up | 11:24:22 - 11:48:24 | -1860 |
| Indian Springs | 11:34:48 | -17.2 | AT | Up | 46.0 | 158.4 | Up | 11:22:47 - 11:46:49 | -1864 |
| Maupin | 11:35:58 | -15.9 | AT | Up | 36.5 | 154.9 | Up | 11:23:57 - 11:47:59 | -1872 |
| Tonopah | 11:35:02 | -17.5 | AT | Up | 44.2 | 157.0 | Up | 11:23:01 - 11:47:03 | -1921 |
| Beatty | 11:34:52 | -17.8 | AT | Up | 45.3 | 157.1 | Up | 11:22:51 - 11:46:53 | -1937 |
| Bend | 11:35:53 | -16.7 | AT | Up | 37.5 | 154.3 | Up | 11:23:52 - 11:47:54 | -1944 |
| Yuma | 11:34:14 | -18.4 | Dark | Up | 49.9 | 158.1 | Up | 11:22:13 - 11:46:15 | -1947 |
| Sisters | 11:35:54 | -16.7 | AT | Up | 37.2 | 154.1 | Up | 11:23:53 - 11:47:55 | -1951 |
| North Lake | 11:35:46 | -16.9 | AT | Up | 38.3 | 154.5 | Up | 11:23:45 - 11:47:47 | -1955 |
| Oregon Observatory | 11:35:52 | -16.8 | AT | Up | 37.6 | 154.1 | Up | 11:23:51 - 11:47:53 | -1962 |
| Lakeview | 11:35:41 | -17.2 | AT | Up | 39.5 | 154.7 | Up | 11:23:40 - 11:47:42 | -1967 |
| Cedarville | 11:35:33 | -17.5 | AT | Up | 40.1 | 154.7 | Up | 11:23:32 - 11:47:34 | -1986 |
| Calipatria | 11:34:20 | -18.8 | Dark | Up | 49.2 | 157.0 | Up | 11:22:19 - 11:46:21 | -2005 |
| Hawthorne | 11:35:08 | -18.2 | Dark | Up | 43.3 | 155.4 | Up | 11:23:07 - 11:47:09 | -2012 |
| Yerington | 11:35:12 | -18.3 | Dark | Up | 42.7 | 154.9 | Up | 11:23:11 - 11:47:13 | -2031 |
| Bishop | 11:35:01 | -18.6 | Dark | Up | 44.4 | 155.2 | Up | 11:23:00 - 11:47:02 | -2048 |
| Reno | 11:35:19 | -18.4 | Dark | Up | 42.0 | 154.3 | Up | 11:23:18 - 11:47:20 | -2056 |
| Chiloquin | 11:35:45 | -17.9 | AT | Up | 38.6 | 153.1 | Up | 11:23:44 - 11:47:46 | -2059 |
| Klamath Falls | 11:35:41 | -18.0 | Dark | Up | 39.0 | 153.0 | Up | 11:23:40 - 11:47:42 | -2070 |
| Carson City | 11:35:18 | -18.6 | Dark | Up | 42.3 | 154.2 | Up | 11:23:17 - 11:47:19 | -2071 |
| Susanville | 11:35:27 | -18.4 | Dark | Up | 40.9 | 153.6 | Up | 11:23:26 - 11:47:28 | -2077 |
| Lee Vining | 11:35:05 | -18.8 | Dark | Up | 43.6 | 154.5 | Up | 11:23:04 - 11:47:06 | -2077 |
| Idyllwild | 11:34:27 | -19.4 | Dark | Up | 48.2 | 155.7 | Up | 11:22:26 - 11:46:28 | -2078 |
| Gardnerville | 11:35:16 | -18.7 | Dark | Up | 42.5 | 154.1 | Up | 11:23:15 - 11:47:17 | -2080 |
| Portola | 11:35:22 | -18.6 | Dark | Up | 41.5 | 153.6 | Up | 11:23:21 - 11:47:23 | -2093 |
| Fall River/Burney | 11:35:34 | -18.5 | Dark | Up | 40.1 | 153.0 | Up | 11:23:33 - 11:47:35 | -2102 |
| Gimple | 11:35:25 | -18.7 | Dark | Up | 41.1 | 153.3 | Up | 11:23:24 - 11:47:26 | -2107 |
| Greenville | 11:35:25 | -18.7 | Dark | Up | 41.1 | 153.2 | Up | 11:23:24 - 11:47:26 | -2113 |
| Quincy | 11:35:24 | -18.9 | Dark | Up | 41.3 | 153.1 | Up | 11:23:23 - 11:47:25 | -2123 |
| Wildwood | 11:34:36 | -20.5 | Dark | Up | 47.2 | 153.3 | Up | 11:22:35 - 11:46:37 | -2220 |
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 469708, (2028/04/19 11:27UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 38.48 81 60Bet Oph 17:43:28.3 +04:34:06 2.8 17.98 67 Bet Sct 18:47:10.5 -04:44:53 4.2 0.93 49 PPM 202097 18:44:44.8 -05:11:16 8.4 0.20 50 PPM 202085 18:44:08.1 -05:00:21 9.0 0.20 50 469708 18:43:56.0 -05:12:04 15.5 50 Positions are for J2000
Event circumstances last updated at 2022/02/10 00:45:41 UT
Marc W. Buie, Southwest Research Institute