Event between (612083) 98WX31 and star GA1140:02956787 with event index number of 2805248
Geocentric closest approach at 2027/01/09 05:02:35 UTC
J2000 position of star is 07:23:42.0 +24:57:43
Equinox of date position of star is 07:25:06.7 +24:54:56
Stellar brightness G=15.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 166 degrees from the moon.
Moon is 2% illuminated.
Apparent brightness V=22.8
[RECON map]
Object is 41.1 AU from the Sun
and 40.1 AU from the Earth.
Apparent velocity is 25.4
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 513 seconds.
The 1-sigma cross-track error in the shadow position is
3240 km.
The sky-plane scale is
29089.3 km/arcsec.
The object has an absolute magnitude Hv=6.7
Diameter=270.4 km assuming a 5% albedo -- 10.6 sec chord
Diameter=110.4 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is CLASSICAL
Star training set for 612083, (2027/01/09 04:55UT) Object RA Dec mag sep mel Pollux 07:46:58.2 +27:57:31 1.1 5.72 169 57 Gem 07:25:07.2 +24:59:46 5.9 0.10 165 PPM 097353 07:20:34.4 +25:53:23 8.2 1.46 164 57 Gem 07:25:07.2 +24:59:46 5.9 0.10 165 612083 07:25:20.7 +24:54:28 15.3 166 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
1.8 sigma about the mid-time.
The median site spacing is 34.7 km
RECON observability=1.0 and success probability=16.9%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 05:04:50 | -44.4 | Dark | Down | 46.2 | 108.1 | Up | 04:49:50 - 05:19:50 | 1050 |
| Sleaford | 05:04:16 | -51.5 | Dark | Down | 53.5 | 125.5 | Up | 04:49:16 - 05:19:16 | 1037 |
| Kelowna | 05:04:50 | -45.3 | Dark | Down | 47.0 | 108.1 | Up | 04:49:50 - 05:19:50 | 958 |
| Peachland | 05:04:51 | -45.1 | Dark | Down | 46.8 | 107.7 | Up | 04:49:51 - 05:19:51 | 951 |
| Summerland | 05:04:51 | -45.2 | Dark | Down | 46.9 | 107.7 | Up | 04:49:51 - 05:19:51 | 935 |
| Penticton | 05:04:51 | -45.3 | Dark | Down | 47.0 | 107.7 | Up | 04:49:51 - 05:19:51 | 927 |
| Oliver | 05:04:51 | -45.5 | Dark | Down | 47.1 | 107.3 | Up | 04:49:51 - 05:19:51 | 893 |
| Victoria | 05:05:00 | -43.3 | Dark | Down | 44.9 | 103.1 | Up | 04:50:00 - 05:20:00 | 887 |
| Anarchist Mountain Observatory | 05:04:51 | -45.6 | Dark | Down | 47.3 | 107.4 | Up | 04:49:51 - 05:19:51 | 873 |
| Okanogan | 05:04:52 | -45.7 | Dark | Down | 47.4 | 106.5 | Up | 04:49:52 - 05:19:52 | 812 |
| Brewster | 05:04:54 | -45.7 | Dark | Down | 47.3 | 106.0 | Up | 04:49:54 - 05:19:54 | 788 |
| Manson/Chelan | 05:04:55 | -45.5 | Dark | Down | 47.1 | 105.5 | Up | 04:49:55 - 05:19:55 | 773 |
| Wenatchee | 05:04:56 | -45.6 | Dark | Down | 47.1 | 104.8 | Up | 04:49:56 - 05:19:56 | 728 |
| Ellensburg | 05:04:57 | -45.6 | Dark | Down | 47.1 | 104.2 | Up | 04:49:57 - 05:19:57 | 690 |
| Yakima | 05:04:58 | -45.7 | Dark | Down | 47.2 | 103.7 | Up | 04:49:58 - 05:19:58 | 650 |
| Toppenish/White Swan | 05:04:58 | -45.9 | Dark | Down | 47.4 | 103.7 | Up | 04:49:58 - 05:19:58 | 625 |
| PNWRO | 05:04:55 | -47.0 | Dark | Down | 48.4 | 104.6 | Up | 04:49:55 - 05:19:55 | 565 |
| The Dalles | 05:05:01 | -45.6 | Dark | Down | 47.0 | 102.2 | Up | 04:50:01 - 05:20:01 | 560 |
| Maupin | 05:05:01 | -45.7 | Dark | Down | 47.2 | 101.8 | Up | 04:50:01 - 05:20:01 | 516 |
| Sisters | 05:05:04 | -45.6 | Dark | Down | 47.0 | 100.5 | Up | 04:50:04 - 05:20:04 | 435 |
| Bend | 05:05:04 | -45.9 | Dark | Down | 47.2 | 100.4 | Up | 04:50:04 - 05:20:04 | 406 |
| Oregon Observatory | 05:05:04 | -45.8 | Dark | Down | 47.2 | 100.1 | Up | 04:50:04 - 05:20:04 | 391 |
| Chiloquin | 05:05:08 | -45.8 | Dark | Down | 47.1 | 98.4 | Up | 04:50:08 - 05:20:08 | 263 |
| Klamath Falls | 05:05:08 | -46.0 | Dark | Down | 47.2 | 98.1 | Up | 04:50:08 - 05:20:08 | 226 |
| Cedarville | 05:05:05 | -47.3 | Dark | Down | 48.5 | 98.6 | Up | 04:50:05 - 05:20:05 | 127 |
| Fall River/Burney | 05:05:09 | -46.5 | Dark | Down | 47.6 | 97.1 | Up | 04:50:09 - 05:20:09 | 98 |
| Greenville | 05:05:09 | -47.0 | Dark | Down | 48.1 | 96.5 | Up | 04:50:09 - 05:20:09 | -4 |
| Gimple | 05:05:09 | -47.1 | Dark | Down | 48.1 | 96.5 | Up | 04:50:09 - 05:20:09 | -6 |
| Quincy | 05:05:09 | -47.0 | Dark | Down | 48.1 | 96.3 | Up | 04:50:09 - 05:20:09 | -25 |
| Portola | 05:05:08 | -47.4 | Dark | Down | 48.5 | 96.5 | Up | 04:50:08 - 05:20:08 | -47 |
| Reno | 05:05:07 | -48.0 | Dark | Down | 49.0 | 96.6 | Up | 04:50:07 - 05:20:07 | -86 |
| Carson City | 05:05:08 | -48.0 | Dark | Down | 49.1 | 96.3 | Up | 04:50:08 - 05:20:08 | -124 |
| Gardnerville | 05:05:08 | -48.1 | Dark | Down | 49.1 | 96.0 | Up | 04:50:08 - 05:20:08 | -150 |
| Yerington | 05:05:06 | -48.6 | Dark | Down | 49.6 | 96.5 | Up | 04:50:06 - 05:20:06 | -155 |
| Dunrhomin | 05:04:27 | -58.3 | Dark | Down | 59.6 | 110.6 | Up | 04:49:27 - 05:19:27 | -193 |
| Nikitin | 05:04:27 | -58.4 | Dark | Down | 59.7 | 110.3 | Up | 04:49:27 - 05:19:27 | -212 |
| Hawthorne | 05:05:06 | -49.0 | Dark | Down | 50.0 | 96.3 | Up | 04:50:06 - 05:20:06 | -213 |
| CU-SBO | 05:04:28 | -58.3 | Dark | Down | 59.7 | 110.1 | Up | 04:49:28 - 05:19:28 | -219 |
| Lee Vining | 05:05:08 | -48.8 | Dark | Down | 49.7 | 95.3 | Up | 04:50:08 - 05:20:08 | -264 |
| Bishop | 05:05:07 | -49.4 | Dark | Down | 50.3 | 95.1 | Up | 04:50:07 - 05:20:07 | -340 |
| Beatty | 05:05:03 | -50.8 | Dark | Down | 51.7 | 95.7 | Up | 04:50:03 - 05:20:03 | -415 |
| Patrick | 05:04:56 | -53.3 | Dark | Down | 54.1 | 95.7 | Up | 04:49:56 - 05:19:56 | -618 |
| Laughlin/Bullhead City | 05:04:59 | -52.8 | Dark | Down | 53.6 | 94.9 | Up | 04:49:59 - 05:19:59 | -634 |
| Wildwood | 05:05:11 | -49.7 | Dark | Down | 50.4 | 91.0 | Up | 04:50:11 - 05:20:11 | -685 |
| Lake Havasu City | 05:04:59 | -53.1 | Dark | Down | 53.8 | 94.1 | Up | 04:49:59 - 05:19:59 | -711 |
| Idyllwild | 05:05:06 | -51.3 | Dark | Down | 51.9 | 91.7 | Up | 04:50:06 - 05:20:06 | -756 |
| George/Scottsdale | 05:04:52 | -55.2 | Dark | Down | 55.9 | 94.6 | Up | 04:49:52 - 05:19:52 | -829 |
| Calipatria | 05:05:03 | -52.3 | Dark | Down | 52.9 | 91.6 | Up | 04:50:03 - 05:20:03 | -841 |
| Yuma | 05:05:01 | -53.1 | Dark | Down | 53.7 | 91.5 | Up | 04:50:01 - 05:20:01 | -901 |
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 612083, (2027/01/09 04:55UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 5.72 169 57 Gem 07:23:28.4 +25:03:01 5.9 0.10 165 PPM 097353 07:18:54.9 +25:56:28 8.2 1.46 164 57 Gem 07:23:28.4 +25:03:01 5.9 0.10 165 612083 07:23:42.0 +24:57:43 15.3 166 Positions are for J2000
Event circumstances last updated at 2023/03/04 04:14:00 UT
Marc W. Buie, Southwest Research Institute