Event between 13MR18 and star GA0980:05237469 with event index number of 2069208
Geocentric closest approach at 2027/07/09 07:30:47 UTC
J2000 position of star is 17:46:07.7 +08:32:00
Equinox of date position of star is 17:47:13.6 +08:31:34
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 90 degrees from the moon.
Moon is 34% illuminated.
TNO apparent brightness V=22.2
[RECON map]
TNO is 26.4 AU from the Sun
and 25.5 AU from the Earth.
The TNO is moving 21.6
km/sec on the sky relative to the star, or,
4.2 arcsec/hr.
The 1-sigma error in the time of the event is 228 seconds.
The 1-sigma cross-track error in the shadow position is
1324 km.
The sky-plane scale is
18524.9 km/arcsec.
The TNO has an absolute magnitude Hv=7.9
Diameter=158.5 km assuming a 5% albedo -- 7.4 sec chord
Diameter=64.7 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is 3:2E+6:4II
Star training set for 13MR18, (2027/07/09 07:30UT) Object RA Dec mag sep mel Vega 18:37:52.2 +38:48:37 0.0 32.33 101 60Bet Oph 17:44:50.0 +04:33:28 2.8 4.02 89 PPM 164771 17:54:34.7 +06:05:52 5.8 3.00 92 PPM 164540 17:47:13.0 +08:53:47 8.4 0.38 90 PPM 164555 17:47:44.1 +08:14:47 10.0 0.29 90 13MR18 17:47:26.9 +08:31:29 16.5 90 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
3.9 sigma about the mid-time.
The median site spacing is 32.8 km
RECON observability=1.0 and success probability=36.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 07:29:19 | -16.5 | AT | Down | 46.6 | 198.1 | Up | 07:14:19 - 07:44:19 | 875 |
| Sleaford | 07:28:37 | -15.4 | AT | Down | 41.3 | 216.3 | Up | 07:13:37 - 07:43:37 | 810 |
| Kelowna | 07:29:17 | -17.4 | AT | Down | 47.2 | 199.6 | Up | 07:14:17 - 07:44:17 | 793 |
| Peachland | 07:29:18 | -17.5 | AT | Down | 47.4 | 199.2 | Up | 07:14:18 - 07:44:18 | 788 |
| Summerland | 07:29:17 | -17.6 | AT | Down | 47.5 | 199.4 | Up | 07:14:17 - 07:44:17 | 774 |
| Penticton | 07:29:17 | -17.7 | AT | Down | 47.5 | 199.6 | Up | 07:14:17 - 07:44:17 | 766 |
| Victoria | 07:29:29 | -18.3 | Dark | Down | 49.2 | 194.4 | Up | 07:14:29 - 07:44:29 | 740 |
| Oliver | 07:29:17 | -18.0 | Dark | Down | 47.9 | 199.7 | Up | 07:14:17 - 07:44:17 | 736 |
| Anarchist Mountain Observatory | 07:29:16 | -18.2 | Dark | Down | 48.0 | 200.1 | Up | 07:14:16 - 07:44:16 | 719 |
| Okanogan | 07:29:17 | -18.9 | Dark | Down | 48.6 | 200.0 | Up | 07:14:17 - 07:44:17 | 666 |
| Brewster | 07:29:18 | -19.1 | Dark | Down | 48.9 | 199.8 | Up | 07:14:18 - 07:44:18 | 645 |
| Manson/Chelan | 07:29:19 | -19.3 | Dark | Down | 49.2 | 199.4 | Up | 07:14:19 - 07:44:19 | 633 |
| Wenatchee | 07:29:20 | -19.7 | Dark | Down | 49.7 | 199.3 | Up | 07:14:20 - 07:44:20 | 594 |
| Ellensburg | 07:29:20 | -20.1 | Dark | Down | 50.1 | 199.1 | Up | 07:14:20 - 07:44:20 | 561 |
| Yakima | 07:29:21 | -20.5 | Dark | Down | 50.5 | 199.3 | Up | 07:14:21 - 07:44:21 | 525 |
| Toppenish/White Swan | 07:29:20 | -20.7 | Dark | Down | 50.7 | 199.6 | Up | 07:14:20 - 07:44:20 | 504 |
| The Dalles | 07:29:23 | -21.4 | Dark | Down | 51.6 | 198.7 | Up | 07:14:23 - 07:44:23 | 447 |
| PNWRO | 07:29:15 | -21.3 | Dark | Down | 50.7 | 202.0 | Up | 07:14:15 - 07:44:15 | 447 |
| Maupin | 07:29:23 | -21.8 | Dark | Down | 52.0 | 199.1 | Up | 07:14:23 - 07:44:23 | 408 |
| Sisters | 07:29:25 | -22.6 | Dark | Down | 52.9 | 198.7 | Up | 07:14:25 - 07:44:25 | 337 |
| Bend | 07:29:24 | -22.9 | Dark | Down | 53.1 | 199.2 | Up | 07:14:24 - 07:44:24 | 311 |
| Oregon Observatory | 07:29:24 | -23.1 | Dark | Down | 53.3 | 199.1 | Up | 07:14:24 - 07:44:24 | 297 |
| Chiloquin | 07:29:27 | -24.3 | Dark | Down | 54.6 | 199.0 | Up | 07:14:27 - 07:44:27 | 183 |
| Klamath Falls | 07:29:27 | -24.6 | Dark | Down | 54.9 | 199.3 | Up | 07:14:27 - 07:44:27 | 150 |
| Cedarville | 07:29:21 | -25.5 | Dark | Down | 55.2 | 202.3 | Up | 07:14:21 - 07:44:21 | 57 |
| Fall River/Burney | 07:29:26 | -25.9 | Dark | Down | 55.9 | 200.5 | Up | 07:14:26 - 07:44:26 | 33 |
| Greenville | 07:29:24 | -26.8 | Dark | Down | 56.7 | 201.8 | Up | 07:14:24 - 07:44:24 | -60 |
| Gimple | 07:29:24 | -26.8 | Dark | Down | 56.6 | 201.9 | Up | 07:14:24 - 07:44:24 | -62 |
| Quincy | 07:29:24 | -27.0 | Dark | Down | 56.9 | 201.9 | Up | 07:14:24 - 07:44:24 | -80 |
| Portola | 07:29:23 | -27.2 | Dark | Down | 56.8 | 202.8 | Up | 07:14:23 - 07:44:23 | -100 |
| Reno | 07:29:20 | -27.5 | Dark | Down | 56.9 | 204.0 | Up | 07:14:20 - 07:44:20 | -137 |
| Carson City | 07:29:20 | -27.9 | Dark | Down | 57.2 | 204.3 | Up | 07:14:20 - 07:44:20 | -172 |
| Gardnerville | 07:29:20 | -28.1 | Dark | Down | 57.4 | 204.5 | Up | 07:14:20 - 07:44:20 | -197 |
| Yerington | 07:29:18 | -28.2 | Dark | Down | 57.2 | 205.5 | Up | 07:14:18 - 07:44:18 | -202 |
| Hawthorne | 07:29:16 | -28.7 | Dark | Down | 57.4 | 206.7 | Up | 07:14:16 - 07:44:16 | -257 |
| Dunrhomin | 07:28:28 | -27.2 | Dark | Down | 50.0 | 225.1 | Up | 07:13:28 - 07:43:28 | -297 |
| Lee Vining | 07:29:18 | -29.2 | Dark | Down | 58.1 | 206.3 | Up | 07:14:18 - 07:44:18 | -303 |
| CU-SBO | 07:28:28 | -27.4 | Dark | Down | 50.2 | 225.2 | Up | 07:13:28 - 07:43:28 | -320 |
| Bishop | 07:29:16 | -29.9 | Dark | Down | 58.4 | 208.0 | Up | 07:14:16 - 07:44:16 | -374 |
| Beatty | 07:29:10 | -30.5 | Dark | Down | 58.1 | 211.1 | Up | 07:14:10 - 07:44:10 | -449 |
| Patrick | 07:28:59 | -32.2 | Dark | Down | 58.1 | 217.2 | Up | 07:13:59 - 07:43:59 | -648 |
| Laughlin/Bullhead City | 07:29:01 | -32.4 | Dark | Down | 58.6 | 216.3 | Up | 07:14:01 - 07:44:01 | -660 |
| Wildwood | 07:29:18 | -33.1 | Dark | Down | 61.3 | 210.4 | Up | 07:14:18 - 07:44:18 | -695 |
| Lake Havasu City | 07:29:01 | -33.0 | Dark | Down | 59.0 | 217.4 | Up | 07:14:01 - 07:44:01 | -733 |
| Idyllwild | 07:29:10 | -33.6 | Dark | Down | 60.8 | 214.1 | Up | 07:14:10 - 07:44:10 | -766 |
| Calipatria | 07:29:06 | -34.3 | Dark | Down | 60.7 | 216.8 | Up | 07:14:06 - 07:44:06 | -850 |
| George/Scottsdale | 07:28:51 | -33.9 | Dark | Down | 58.3 | 222.1 | Up | 07:13:51 - 07:43:51 | -854 |
| Yuma | 07:29:02 | -34.8 | Dark | Down | 60.6 | 218.8 | Up | 07:14:02 - 07:44:02 | -910 |
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 13MR18, (2027/07/09 07:30UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 32.33 101 60Bet Oph 17:43:28.3 +04:34:06 2.8 4.02 89 PPM 164771 17:53:14.0 +06:06:07 5.8 3.00 92 PPM 164540 17:45:54.1 +08:54:19 8.4 0.38 90 PPM 164555 17:46:24.8 +08:15:18 10.0 0.29 90 13MR18 17:46:07.7 +08:32:00 16.5 90 Positions are for J2000
Event circumstances last updated at 2022/11/22 02:43:10 UT
Marc W. Buie, Southwest Research Institute