Event between (517717) 15KZ120 and star GA1540:01781358 with event index number of 2627440
Geocentric closest approach at 2023/02/28 13:01:20 UTC
J2000 position of star is 02:05:27.1 +65:09:39
Equinox of date position of star is 02:07:11.5 +65:16:08
Stellar brightness G=16.1,
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 62% illuminated.
TNO apparent brightness V=21.0
[RECON map]
TNO is 11.3 AU from the Sun
and 11.4 AU from the Earth.
The TNO is moving 33.1
km/sec on the sky relative to the star, or,
14.5 arcsec/hr.
The 1-sigma error in the time of the event is 43 seconds.
The 1-sigma cross-track error in the shadow position is
1388 km.
The sky-plane scale is
8244.3 km/arcsec.
The TNO has an absolute magnitude Hv=10.1
Diameter=57.5 km assuming a 5% albedo -- 1.7 sec chord
Diameter=23.5 km assuming a 30% albedo -- 0.7 sec chord
Dynamical classification is CENTAURR
Star training set for 517717, (2023/02/28 13:01UT) Object RA Dec mag sep mel Deneb 20:42:13.3 +45:21:51 1.3 46.29 96 37Del Cas 01:27:21.1 +60:21:17 2.7 6.69 52 PPM 013433 02:06:26.2 +65:12:49 6.5 0.10 50 517717 02:07:13.4 +65:16:15 16.1 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 10.1 km
RECON observability=0.4 and success probability=3.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Victoria | 12:58:53 | -20.3 | Dark | Down | 24.5 | 8.2 | Low | 12:54:49 - 13:02:57 | 1954 |
| Chiloquin | 12:58:44 | -20.3 | Dark | Down | 18.8 | 8.5 | Really Low | 12:54:40 - 13:02:48 | 1900 |
| Klamath Falls | 12:58:43 | -20.3 | Dark | Down | 18.5 | 8.6 | Really Low | 12:54:39 - 13:02:47 | 1895 |
| Fall River/Burney | 12:58:41 | -20.1 | Dark | Down | 17.4 | 8.7 | Really Low | 12:54:37 - 13:02:45 | 1871 |
| Sisters | 12:58:45 | -19.8 | Dark | Down | 20.5 | 8.8 | Low | 12:54:41 - 13:02:49 | 1870 |
| Oregon Observatory | 12:58:44 | -19.8 | Dark | Down | 20.2 | 8.8 | Low | 12:54:40 - 13:02:48 | 1863 |
| Bend | 12:58:45 | -19.7 | Dark | Down | 20.3 | 8.9 | Low | 12:54:41 - 13:02:49 | 1853 |
| Quincy | 12:58:39 | -19.9 | Dark | Down | 16.3 | 8.8 | Really Low | 12:54:35 - 13:02:43 | 1840 |
| Greenville | 12:58:39 | -19.9 | Dark | Down | 16.5 | 8.8 | Really Low | 12:54:35 - 13:02:43 | 1840 |
| The Dalles | 12:58:47 | -19.4 | Dark | Down | 21.9 | 9.0 | Low | 12:54:43 - 13:02:51 | 1835 |
| Gimple | 12:58:39 | -19.9 | Dark | Down | 16.5 | 8.8 | Really Low | 12:54:35 - 13:02:43 | 1834 |
| Maupin | 12:58:46 | -19.3 | Dark | Down | 21.5 | 9.0 | Low | 12:54:42 - 13:02:50 | 1830 |
| North Lake | 12:58:43 | -19.5 | Dark | Down | 19.6 | 9.0 | Really Low | 12:54:39 - 13:02:47 | 1828 |
| Susanville | 12:58:40 | -19.7 | Dark | Down | 16.8 | 8.9 | Really Low | 12:54:36 - 13:02:44 | 1818 |
| Goldendale | 12:58:47 | -19.1 | Dark | Down | 22.1 | 9.2 | Low | 12:54:43 - 13:02:51 | 1808 |
| Portola | 12:58:39 | -19.6 | Dark | Down | 16.2 | 9.0 | Really Low | 12:54:35 - 13:02:43 | 1804 |
| Lakeview | 12:58:41 | -19.2 | Dark | Down | 18.6 | 9.2 | Really Low | 12:54:37 - 13:02:45 | 1792 |
| Yakima | 12:58:47 | -18.8 | Dark | Down | 22.9 | 9.3 | Low | 12:54:43 - 13:02:51 | 1786 |
| Ellensburg | 12:58:47 | -18.7 | Dark | Down | 23.3 | 9.4 | Low | 12:54:43 - 13:02:51 | 1782 |
| Cedarville | 12:58:40 | -19.2 | Dark | Down | 18.0 | 9.2 | Really Low | 12:54:36 - 13:02:44 | 1780 |
| Toppenish/White Swan | 12:58:47 | -18.7 | Dark | Down | 22.7 | 9.4 | Low | 12:54:43 - 13:02:51 | 1776 |
| Wenatchee | 12:58:48 | -18.5 | Dark | Down | 23.8 | 9.5 | Low | 12:54:44 - 13:02:52 | 1764 |
| Reno | 12:58:38 | -19.1 | Dark | Down | 16.1 | 9.2 | Really Low | 12:54:34 - 13:02:42 | 1755 |
| Carson City | 12:58:37 | -19.1 | Dark | Down | 15.7 | 9.2 | Really Low | 12:54:33 - 13:02:41 | 1753 |
| Gardnerville | 12:58:37 | -19.1 | Dark | Down | 15.5 | 9.2 | Really Low | 12:54:33 - 13:02:41 | 1749 |
| Manson/Chelan | 12:58:49 | -18.3 | Dark | Down | 24.2 | 9.6 | Low | 12:54:45 - 13:02:53 | 1749 |
| Kamloops | 12:58:53 | -18.0 | AT | Down | 27.0 | 9.8 | Low | 12:54:49 - 13:02:57 | 1738 |
| Brewster | 12:58:48 | -18.0 | Dark | Down | 24.5 | 9.8 | Low | 12:54:44 - 13:02:52 | 1723 |
| Peachland | 12:58:51 | -17.8 | AT | Down | 26.1 | 10.0 | Low | 12:54:47 - 13:02:55 | 1709 |
| Okanogan | 12:58:49 | -17.9 | AT | Down | 24.8 | 9.9 | Low | 12:54:45 - 13:02:53 | 1708 |
| Yerington | 12:58:37 | -18.7 | Dark | Down | 15.6 | 9.5 | Really Low | 12:54:33 - 13:02:41 | 1704 |
| Summerland | 12:58:50 | -17.7 | AT | Down | 26.0 | 10.0 | Low | 12:54:46 - 13:02:54 | 1704 |
| Oliver | 12:58:50 | -17.7 | AT | Down | 25.6 | 10.0 | Low | 12:54:46 - 13:02:54 | 1700 |
| Lee Vining | 12:58:35 | -18.7 | Dark | Down | 14.6 | 9.5 | Really Low | 12:54:31 - 13:02:39 | 1699 |
| Penticton | 12:58:51 | -17.7 | AT | Down | 25.9 | 10.0 | Low | 12:54:47 - 13:02:55 | 1697 |
| Tonasket | 12:58:49 | -17.7 | AT | Down | 25.1 | 10.0 | Low | 12:54:45 - 13:02:53 | 1696 |
| Anarchist Mountain Observatory | 12:58:49 | -17.6 | AT | Down | 25.4 | 10.1 | Low | 12:54:45 - 13:02:53 | 1689 |
| Kelowna | 12:58:51 | -17.6 | AT | Down | 26.3 | 10.1 | Low | 12:54:47 - 13:02:55 | 1689 |
| PNWRO | 12:58:45 | -17.7 | AT | Down | 22.5 | 10.0 | Low | 12:54:41 - 13:02:49 | 1675 |
| Hawthorne | 12:58:35 | -18.3 | Dark | Down | 15.2 | 9.7 | Really Low | 12:54:31 - 13:02:39 | 1662 |
| Bishop | 12:58:34 | -18.2 | Dark | Down | 14.1 | 9.7 | Really Low | 12:54:30 - 13:02:38 | 1640 |
| Wildwood | 12:58:31 | -18.6 | Dark | Down | 10.8 | 9.5 | Really Low | 12:54:27 - 13:02:35 | 1640 |
| Tonopah | 12:58:33 | -17.2 | AT | Down | 14.9 | 10.2 | Really Low | 12:54:29 - 13:02:37 | 1550 |
| Beatty | 12:58:32 | -16.9 | AT | Down | 13.9 | 10.4 | Really Low | 12:54:28 - 13:02:36 | 1507 |
| Idyllwild | 12:58:29 | -17.0 | AT | Down | 10.7 | 10.3 | Really Low | 12:54:25 - 13:02:33 | 1481 |
| Indian Springs | 12:58:30 | -16.1 | AT | Down | 13.7 | 10.8 | Really Low | 12:54:26 - 13:02:34 | 1418 |
| Calipatria | 12:58:27 | -16.1 | AT | Down | 10.3 | 10.7 | Really Low | 12:54:23 - 13:02:31 | 1374 |
| Henderson | 12:58:29 | -15.6 | AT | Down | 13.3 | 11.1 | Really Low | 12:54:25 - 13:02:33 | 1357 |
| Laughlin/Bullhead City | 12:58:28 | -15.2 | AT | Down | 12.5 | 11.2 | Really Low | 12:54:24 - 13:02:32 | 1315 |
| Mohave Valley | 12:58:28 | -15.2 | AT | Down | 12.2 | 11.2 | Really Low | 12:54:24 - 13:02:32 | 1312 |
| Yuma | 12:58:26 | -15.3 | AT | Down | 10.0 | 11.1 | Really Low | 12:54:22 - 13:02:30 | 1293 |
| Lake Havasu City | 12:58:27 | -15.0 | AT | Down | 11.9 | 11.2 | Really Low | 12:54:23 - 13:02:31 | 1287 |
| Parker | 12:58:27 | -15.0 | AT | Down | 11.5 | 11.2 | Really Low | 12:54:23 - 13:02:31 | 1281 |
| Kingman/Dolan Springs | 12:58:27 | -14.8 | AT | Down | 12.6 | 11.4 | Really Low | 12:54:23 - 13:02:31 | 1272 |
| Patrick | 12:58:27 | -14.7 | AT | Down | 12.8 | 11.5 | Really Low | 12:54:23 - 13:02:31 | 1258 |
| George/Scottsdale | 12:58:24 | -13.0 | AT | Down | 11.5 | 12.2 | Really Low | 12:54:20 - 13:02:28 | 1068 |
| Sleaford | 12:58:45 | -8.9 | NT | Down | 30.4 | 16.4 | Up | 12:54:41 - 13:02:49 | 814 |
| CU-SBO | 12:58:26 | -8.0 | NT | Down | 18.9 | 15.2 | Really Low | 12:54:22 - 13:02:30 | 612 |
| Dunrhomin | 12:58:26 | -7.9 | NT | Down | 19.1 | 15.2 | Really Low | 12:54:22 - 13:02:30 | 608 |
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, (2023/02/28 13:01UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 46.29 96 37Del Cas 01:25:49.8 +60:14:06 2.7 6.69 52 PPM 013433 02:04:40.1 +65:06:13 6.5 0.10 50 517717 02:05:27.1 +65:09:39 16.1 50 Positions are for J2000
Event circumstances last updated at 2022/10/03 04:22:27 UT
Marc W. Buie, Southwest Research Institute