Event between 09YG19 and star GA1120:02249448 with event index number of 2659302
Geocentric closest approach at 2028/12/31 11:00:39 UTC
J2000 position of star is 06:33:50.7 +23:05:05
Equinox of date position of star is 06:35:14.9 +23:03:56
Stellar brightness G=15.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 1 degrees from the moon.
Moon is 100% illuminated.
Apparent brightness V=21.9
[RECON map]
Object is 38.0 AU from the Sun
and 37.0 AU from the Earth.
Apparent velocity is 24.9
km/sec on the sky relative to the star, or,
3.3 arcsec/hr.
The 1-sigma error in the time of the event is 235 seconds.
The 1-sigma cross-track error in the shadow position is
1748 km.
The sky-plane scale is
26857.7 km/arcsec.
The object has an absolute magnitude Hv=6.1
Diameter=356.5 km assuming a 5% albedo -- 14.3 sec chord
Diameter=145.5 km assuming a 30% albedo -- 5.8 sec chord
Dynamical classification is 5:2EEE
Star training set for 09YG19, (2028/12/31 11:00UT) Object RA Dec mag sep mel Pollux 07:47:05.5 +27:57:13 1.1 16.84 17 Alhena 06:39:23.2 +16:22:19 1.9 6.75 8 PPM 096308 06:40:49.9 +22:00:10 6.0 1.61 2 PPM 096248 06:38:27.8 +23:04:17 6.8 0.66 1 PPM 096198 06:36:21.7 +23:10:33 9.3 0.21 1 PPM 096176 06:35:47.0 +23:01:28 10.5 0.05 1 09YG19 06:35:36.2 +23:03:38 15.6 1 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
3.8 sigma about the mid-time.
The median site spacing is 21.2 km
RECON observability=1.0 and success probability=22.8%
Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
Sleaford | 10:58:36 | -37.5 | Dark | Up | 35.9 | 261.9 | Up | 10:43:36 - 11:13:36 | -958 |
Kamloops | 10:58:54 | -46.5 | Dark | Up | 44.9 | 249.9 | Up | 10:43:54 - 11:13:54 | -1429 |
Kelowna | 10:58:51 | -46.3 | Dark | Up | 44.7 | 251.5 | Up | 10:43:51 - 11:13:51 | -1475 |
Peachland | 10:58:51 | -46.5 | Dark | Up | 44.9 | 251.4 | Up | 10:43:51 - 11:13:51 | -1492 |
Summerland | 10:58:50 | -46.5 | Dark | Up | 44.9 | 251.6 | Up | 10:43:50 - 11:13:50 | -1502 |
Penticton | 10:58:50 | -46.5 | Dark | Up | 44.8 | 251.8 | Up | 10:43:50 - 11:13:50 | -1505 |
Oliver | 10:58:49 | -46.6 | Dark | Up | 44.9 | 252.1 | Up | 10:43:49 - 11:13:49 | -1534 |
Anarchist Mountain Observatory | 10:58:48 | -46.5 | Dark | Up | 44.9 | 252.4 | Up | 10:43:48 - 11:13:48 | -1544 |
Okanogan | 10:58:47 | -46.9 | Dark | Up | 45.2 | 252.8 | Up | 10:43:47 - 11:13:47 | -1605 |
Brewster | 10:58:46 | -47.1 | Dark | Up | 45.4 | 252.9 | Up | 10:43:46 - 11:13:46 | -1633 |
Manson/Chelan | 10:58:47 | -47.4 | Dark | Up | 45.7 | 252.8 | Up | 10:43:47 - 11:13:47 | -1660 |
Victoria | 10:58:55 | -49.2 | Dark | Up | 47.5 | 249.0 | Up | 10:43:55 - 11:13:55 | -1685 |
Wenatchee | 10:58:46 | -47.7 | Dark | Up | 46.0 | 253.1 | Up | 10:43:46 - 11:13:46 | -1705 |
Ellensburg | 10:58:45 | -48.0 | Dark | Up | 46.2 | 253.3 | Up | 10:43:45 - 11:13:45 | -1747 |
Yakima | 10:58:44 | -48.1 | Dark | Up | 46.3 | 253.6 | Up | 10:43:44 - 11:13:44 | -1783 |
PNWRO | 10:58:39 | -47.2 | Dark | Up | 45.4 | 255.7 | Up | 10:43:39 - 11:13:39 | -1791 |
Toppenish/White Swan | 10:58:43 | -48.1 | Dark | Up | 46.3 | 254.0 | Up | 10:43:43 - 11:13:43 | -1798 |
The Dalles | 10:58:43 | -48.8 | Dark | Up | 47.0 | 254.1 | Up | 10:43:43 - 11:13:43 | -1887 |
Dunrhomin | 10:57:59 | -38.3 | Dark | Up | 36.2 | 271.0 | Up | 10:42:59 - 11:12:59 | -1889 |
Nikitin | 10:57:59 | -38.3 | Dark | Up | 36.2 | 271.1 | Up | 10:42:59 - 11:12:59 | -1906 |
CU-SBO | 10:57:58 | -38.4 | Dark | Up | 36.3 | 271.1 | Up | 10:42:58 - 11:12:58 | -1914 |
Maupin | 10:58:42 | -48.9 | Dark | Up | 47.1 | 254.6 | Up | 10:43:42 - 11:13:42 | -1921 |
Sisters | 10:58:41 | -49.5 | Dark | Up | 47.7 | 255.1 | Up | 10:43:41 - 11:13:41 | -2013 |
Bend | 10:58:39 | -49.4 | Dark | Up | 47.5 | 255.6 | Up | 10:43:39 - 11:13:39 | -2028 |
Oregon Observatory | 10:58:39 | -49.5 | Dark | Up | 47.7 | 255.6 | Up | 10:43:39 - 11:13:39 | -2047 |
Chiloquin | 10:58:37 | -50.2 | Dark | Up | 48.3 | 256.7 | Up | 10:43:37 - 11:13:37 | -2178 |
Klamath Falls | 10:58:36 | -50.3 | Dark | Up | 48.3 | 257.1 | Up | 10:43:36 - 11:13:36 | -2208 |
Cedarville | 10:58:31 | -49.3 | Dark | Up | 47.3 | 259.2 | Up | 10:43:31 - 11:13:31 | -2228 |
Fall River/Burney | 10:58:32 | -50.3 | Dark | Up | 48.3 | 258.7 | Up | 10:43:32 - 11:13:32 | -2307 |
Gimple | 10:58:29 | -50.1 | Dark | Up | 48.1 | 260.1 | Up | 10:43:29 - 11:13:29 | -2377 |
Greenville | 10:58:29 | -50.2 | Dark | Up | 48.1 | 260.1 | Up | 10:43:29 - 11:13:29 | -2379 |
Portola | 10:58:28 | -49.9 | Dark | Up | 47.8 | 260.8 | Up | 10:43:28 - 11:13:28 | -2396 |
Quincy | 10:58:29 | -50.2 | Dark | Up | 48.2 | 260.3 | Up | 10:43:29 - 11:13:29 | -2398 |
Reno | 10:58:25 | -49.4 | Dark | Up | 47.4 | 261.6 | Up | 10:43:25 - 11:13:25 | -2402 |
Yerington | 10:58:23 | -49.0 | Dark | Up | 47.0 | 262.7 | Up | 10:43:23 - 11:13:23 | -2435 |
Carson City | 10:58:25 | -49.5 | Dark | Up | 47.4 | 262.0 | Up | 10:43:25 - 11:13:25 | -2435 |
Gardnerville | 10:58:24 | -49.5 | Dark | Up | 47.4 | 262.3 | Up | 10:43:24 - 11:13:24 | -2457 |
Hawthorne | 10:58:21 | -48.7 | Dark | Up | 46.6 | 263.5 | Up | 10:43:21 - 11:13:21 | -2463 |
Lee Vining | 10:58:20 | -49.2 | Dark | Up | 47.1 | 263.8 | Up | 10:43:20 - 11:13:20 | -2531 |
Beatty | 10:58:12 | -47.5 | Dark | Up | 45.3 | 266.5 | Up | 10:43:12 - 11:13:12 | -2560 |
Bishop | 10:58:17 | -48.7 | Dark | Up | 46.6 | 264.9 | Up | 10:43:17 - 11:13:17 | -2566 |
Patrick | 10:58:02 | -45.3 | Dark | Up | 43.1 | 269.7 | Up | 10:43:02 - 11:13:02 | -2610 |
Laughlin/Bullhead City | 10:58:04 | -45.9 | Dark | Up | 43.6 | 269.5 | Up | 10:43:04 - 11:13:04 | -2656 |
George/Scottsdale | 10:57:55 | -43.7 | Dark | Up | 41.4 | 272.3 | Up | 10:42:55 - 11:12:55 | -2705 |
Lake Havasu City | 10:58:02 | -45.7 | Dark | Up | 43.4 | 270.3 | Up | 10:43:02 - 11:13:02 | -2712 |
Idyllwild | 10:58:05 | -47.7 | Dark | Up | 45.4 | 269.7 | Up | 10:43:05 - 11:13:05 | -2862 |
Calipatria | 10:58:01 | -46.7 | Dark | Up | 44.4 | 270.9 | Up | 10:43:01 - 11:13:01 | -2883 |
Wildwood | 10:58:11 | -49.2 | Dark | Up | 47.0 | 268.2 | Up | 10:43:11 - 11:13:11 | -2887 |
Yuma | 10:57:58 | -46.0 | Dark | Up | 43.7 | 271.8 | Up | 10:42:58 - 11:12:58 | -2895 |
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 09YG19, (2028/12/31 11:00UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 16.84 17 Alhena 06:37:42.8 +16:23:56 1.9 6.75 8 PPM 096308 06:39:05.3 +22:01:51 6.0 1.61 2 PPM 096248 06:36:42.3 +23:05:52 6.8 0.66 1 PPM 096198 06:34:36.1 +23:12:03 9.3 0.21 1 PPM 096176 06:34:01.5 +23:02:57 10.5 0.05 1 09YG19 06:33:50.7 +23:05:05 15.6 1 Positions are for J2000
Event circumstances last updated at 2023/02/14 03:57:40 UT
Marc W. Buie, Southwest Research Institute