Event between (517717) 15KZ120 and star GA1260:01101081 with event index number of 2628562
Geocentric closest approach at 2027/12/27 10:33:07 UTC
J2000 position of star is 04:10:00.8 +36:25:29
Equinox of date position of star is 04:11:31.3 +36:29:00
Stellar brightness G=15.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 154 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=22.6
[RECON map]
TNO is 17.5 AU from the Sun
and 16.7 AU from the Earth.
The TNO is moving 28.1
km/sec on the sky relative to the star, or,
8.4 arcsec/hr.
The 1-sigma error in the time of the event is 155 seconds.
The 1-sigma cross-track error in the shadow position is
5734 km.
The sky-plane scale is
12083.1 km/arcsec.
The TNO has an absolute magnitude Hv=10.1
Diameter=57.5 km assuming a 5% albedo -- 2.0 sec chord
Diameter=23.5 km assuming a 30% albedo -- 0.8 sec chord
Dynamical classification is CENTAURR
Star training set for 517717, (2027/12/27 10:33UT) Object RA Dec mag sep mel Aldebaran 04:37:31.8 +16:33:48 0.8 20.73 157 44Zet Per 03:55:53.9 +31:57:52 2.8 5.60 151 50 Per 04:10:29.0 +38:06:38 5.5 1.64 153 PPM 069159 04:11:33.5 +36:02:55 8.5 0.45 154 PPM 069176 04:12:22.2 +36:35:09 9.7 0.14 154 517717 04:11:51.5 +36:29:46 15.8 154 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 30.4 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) |
| Sleaford | 10:29:57 | -41.7 | Dark | Down | 30.9 | 290.9 | Up | 10:16:32 - 10:43:21 | 3201 |
| Kamloops | 10:30:13 | -50.5 | Dark | Down | 39.1 | 282.4 | Up | 10:16:49 - 10:43:38 | 2688 |
| Kelowna | 10:30:11 | -50.4 | Dark | Down | 38.4 | 283.7 | Up | 10:16:47 - 10:43:36 | 2621 |
| Peachland | 10:30:11 | -50.6 | Dark | Down | 38.5 | 283.6 | Up | 10:16:47 - 10:43:36 | 2603 |
| Summerland | 10:30:11 | -50.6 | Dark | Down | 38.4 | 283.7 | Up | 10:16:47 - 10:43:36 | 2589 |
| Penticton | 10:30:11 | -50.6 | Dark | Down | 38.3 | 283.9 | Up | 10:16:46 - 10:43:35 | 2584 |
| Oliver | 10:30:10 | -50.7 | Dark | Down | 38.3 | 284.1 | Up | 10:16:46 - 10:43:35 | 2547 |
| Anarchist Mountain Observatory | 10:30:10 | -50.7 | Dark | Down | 38.1 | 284.4 | Up | 10:16:46 - 10:43:35 | 2533 |
| Okanogan | 10:30:10 | -51.1 | Dark | Down | 38.1 | 284.7 | Up | 10:16:45 - 10:43:34 | 2460 |
| Brewster | 10:30:10 | -51.4 | Dark | Down | 38.1 | 284.8 | Up | 10:16:45 - 10:43:34 | 2427 |
| Victoria | 10:30:16 | -53.3 | Dark | Down | 40.6 | 282.2 | Up | 10:16:51 - 10:43:40 | 2399 |
| Manson/Chelan | 10:30:10 | -51.7 | Dark | Down | 38.3 | 284.7 | Up | 10:16:46 - 10:43:35 | 2396 |
| Wenatchee | 10:30:10 | -52.0 | Dark | Down | 38.3 | 285.0 | Up | 10:16:46 - 10:43:35 | 2342 |
| Ellensburg | 10:30:10 | -52.3 | Dark | Down | 38.3 | 285.2 | Up | 10:16:46 - 10:43:35 | 2293 |
| Yakima | 10:30:10 | -52.5 | Dark | Down | 38.2 | 285.5 | Up | 10:16:45 - 10:43:34 | 2250 |
| Toppenish/White Swan | 10:30:09 | -52.5 | Dark | Down | 38.1 | 285.7 | Up | 10:16:45 - 10:43:34 | 2231 |
| PNWRO | 10:30:07 | -51.7 | Dark | Down | 37.0 | 286.9 | Up | 10:16:42 - 10:43:31 | 2225 |
| The Dalles | 10:30:10 | -53.3 | Dark | Down | 38.4 | 285.9 | Up | 10:16:46 - 10:43:35 | 2130 |
| Maupin | 10:30:10 | -53.4 | Dark | Down | 38.2 | 286.3 | Up | 10:16:45 - 10:43:34 | 2088 |
| Dunrhomin | 10:29:43 | -43.4 | Dark | Down | 25.6 | 297.2 | Low | 10:16:18 - 10:43:07 | 2057 |
| CU-SBO | 10:29:43 | -43.5 | Dark | Down | 25.6 | 297.2 | Low | 10:16:18 - 10:43:07 | 2029 |
| Sisters | 10:30:10 | -54.1 | Dark | Down | 38.3 | 286.7 | Up | 10:16:45 - 10:43:34 | 1983 |
| Bend | 10:30:09 | -54.0 | Dark | Down | 38.0 | 287.0 | Up | 10:16:45 - 10:43:34 | 1963 |
| Oregon Observatory | 10:30:10 | -54.2 | Dark | Down | 38.1 | 287.0 | Up | 10:16:45 - 10:43:34 | 1942 |
| Chiloquin | 10:30:09 | -55.0 | Dark | Down | 38.0 | 287.8 | Up | 10:16:45 - 10:43:34 | 1792 |
| Klamath Falls | 10:30:09 | -55.0 | Dark | Down | 37.8 | 288.1 | Up | 10:16:44 - 10:43:33 | 1757 |
| Cedarville | 10:30:06 | -54.2 | Dark | Down | 36.5 | 289.4 | Up | 10:16:41 - 10:43:30 | 1720 |
| Fall River/Burney | 10:30:08 | -55.2 | Dark | Down | 37.2 | 289.1 | Up | 10:16:43 - 10:43:32 | 1640 |
| Gimple | 10:30:07 | -55.1 | Dark | Down | 36.5 | 290.0 | Up | 10:16:42 - 10:43:31 | 1555 |
| Greenville | 10:30:06 | -55.1 | Dark | Down | 36.6 | 290.0 | Up | 10:16:42 - 10:43:31 | 1554 |
| Quincy | 10:30:07 | -55.2 | Dark | Down | 36.5 | 290.1 | Up | 10:16:42 - 10:43:31 | 1532 |
| Portola | 10:30:06 | -54.9 | Dark | Down | 36.1 | 290.4 | Up | 10:16:41 - 10:43:30 | 1530 |
| Reno | 10:30:04 | -54.5 | Dark | Down | 35.5 | 290.9 | Up | 10:16:40 - 10:43:29 | 1518 |
| Carson City | 10:30:04 | -54.6 | Dark | Down | 35.4 | 291.1 | Up | 10:16:40 - 10:43:29 | 1481 |
| Yerington | 10:30:03 | -54.2 | Dark | Down | 34.9 | 291.5 | Up | 10:16:38 - 10:43:27 | 1476 |
| Gardnerville | 10:30:04 | -54.6 | Dark | Down | 35.3 | 291.3 | Up | 10:16:39 - 10:43:28 | 1456 |
| Hawthorne | 10:30:02 | -53.9 | Dark | Down | 34.3 | 292.1 | Up | 10:16:37 - 10:43:26 | 1441 |
| Lee Vining | 10:30:02 | -54.4 | Dark | Down | 34.5 | 292.2 | Up | 10:16:38 - 10:43:27 | 1369 |
| Bishop | 10:30:01 | -53.9 | Dark | Down | 33.7 | 292.9 | Up | 10:16:36 - 10:43:25 | 1326 |
| Beatty | 10:29:58 | -52.8 | Dark | Down | 32.3 | 293.8 | Up | 10:16:34 - 10:43:23 | 1323 |
| Patrick | 10:29:53 | -50.7 | Dark | Down | 29.6 | 295.7 | Low | 10:16:28 - 10:43:17 | 1259 |
| Laughlin/Bullhead City | 10:29:54 | -51.3 | Dark | Down | 30.0 | 295.6 | Up | 10:16:29 - 10:43:18 | 1211 |
| George/Scottsdale | 10:29:49 | -49.1 | Dark | Down | 27.4 | 297.3 | Low | 10:16:24 - 10:43:13 | 1154 |
| Lake Havasu City | 10:29:53 | -51.1 | Dark | Down | 29.5 | 296.0 | Low | 10:16:29 - 10:43:18 | 1150 |
| Idyllwild | 10:29:57 | -53.1 | Dark | Down | 31.0 | 295.6 | Up | 10:16:33 - 10:43:22 | 996 |
| Wildwood | 10:30:01 | -54.6 | Dark | Down | 32.5 | 294.8 | Up | 10:16:36 - 10:43:25 | 979 |
| Calipatria | 10:29:55 | -52.2 | Dark | Down | 29.8 | 296.3 | Low | 10:16:31 - 10:43:20 | 971 |
| Yuma | 10:29:53 | -51.5 | Dark | Down | 29.0 | 296.8 | Low | 10:16:29 - 10:43:18 | 956 |
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 517717, (2027/12/27 10:33UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 20.73 157 44Zet Per 03:54:07.9 +31:53:01 2.8 5.60 151 50 Per 04:08:36.9 +38:02:18 5.5 1.64 153 PPM 069159 04:09:43.3 +35:58:37 8.5 0.45 154 PPM 069176 04:10:31.5 +36:30:54 9.7 0.14 154 517717 04:10:00.8 +36:25:29 15.8 154 Positions are for J2000
Event circumstances last updated at 2022/11/26 02:48:42 UT
Marc W. Buie, Southwest Research Institute