Event between (517717) 15KZ120 and star GA1720:00625027 with event index number of 2626963
Geocentric closest approach at 2021/10/14 11:11:00 UTC
J2000 position of star is 21:37:26.4 +82:10:26
Equinox of date position of star is 21:36:28.9 +82:16:20
Stellar brightness G=14.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 105 degrees from the moon.
Moon is 65% illuminated.
TNO apparent brightness V=20.4
[RECON map]
TNO is 9.8 AU from the Sun
and 9.5 AU from the Earth.
The TNO is moving 21.7
km/sec on the sky relative to the star, or,
11.3 arcsec/hr.
The 1-sigma error in the time of the event is 34 seconds.
The 1-sigma cross-track error in the shadow position is
463 km.
The sky-plane scale is
6892.6 km/arcsec.
The TNO has an absolute magnitude Hv=10.1
Diameter=57.5 km assuming a 5% albedo -- 2.6 sec chord
Diameter=23.5 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
Star training set for 517717, (2021/10/14 11:11UT) Object RA Dec mag sep mel PPM 000431 02:59:39.4 +89:21:18 2.0 7.65 113 PPM 003728 21:12:22.0 +81:19:17 6.1 1.28 104 PPM 003740 21:16:14.7 +82:36:36 8.4 0.75 105 PPM 003775 21:26:02.8 +81:50:17 9.2 0.56 105 PPM 003815 21:37:47.5 +82:12:45 10.4 0.07 105 517717 21:36:28.9 +82:16:21 14.4 105 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 13.9 km
RECON observability=1.0 and success probability=0.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Clarence Fulton | 11:09:18 | -30.3 | Dark | Down | 47.4 | 348.9 | Up | 11:05:56 - 11:12:40 | -3887 |
| Kelowna | 11:09:18 | -30.6 | Dark | Down | 47.1 | 349.0 | Up | 11:05:56 - 11:12:40 | -3923 |
| Peachland | 11:09:18 | -30.8 | Dark | Down | 47.0 | 349.0 | Up | 11:05:56 - 11:12:40 | -3940 |
| Summerland | 11:09:18 | -30.8 | Dark | Down | 46.8 | 349.0 | Up | 11:05:56 - 11:12:40 | -3949 |
| Penticton | 11:09:17 | -30.8 | Dark | Down | 46.8 | 349.0 | Up | 11:05:55 - 11:12:39 | -3951 |
| Oliver | 11:09:17 | -30.9 | Dark | Down | 46.4 | 349.1 | Up | 11:05:55 - 11:12:39 | -3979 |
| Anarchist Mountain Observatory | 11:09:16 | -30.9 | Dark | Down | 46.2 | 349.1 | Up | 11:05:54 - 11:12:38 | -3988 |
| Tonasket | 11:09:16 | -31.1 | Dark | Down | 45.9 | 349.2 | Up | 11:05:54 - 11:12:38 | -4013 |
| Dunrhomin | 11:08:23 | -24.0 | Dark | Down | 35.9 | 351.7 | Up | 11:05:01 - 11:11:45 | -4032 |
| Okanogan | 11:09:16 | -31.3 | Dark | Down | 45.6 | 349.2 | Up | 11:05:54 - 11:12:38 | -4044 |
| Brewster | 11:09:17 | -31.5 | Dark | Down | 45.4 | 349.3 | Up | 11:05:55 - 11:12:39 | -4070 |
| Manson/Chelan | 11:09:17 | -31.9 | Dark | Down | 45.2 | 349.3 | Up | 11:05:55 - 11:12:39 | -4097 |
| Victoria | 11:09:28 | -33.5 | Dark | Down | 46.2 | 348.9 | Up | 11:06:06 - 11:12:50 | -4131 |
| Wenatchee | 11:09:17 | -32.2 | Dark | Down | 44.8 | 349.4 | Up | 11:05:55 - 11:12:39 | -4138 |
| Ellensburg | 11:09:18 | -32.5 | Dark | Down | 44.4 | 349.4 | Up | 11:05:56 - 11:12:40 | -4177 |
| Pasco | 11:09:13 | -31.9 | Dark | Down | 43.5 | 349.7 | Up | 11:05:51 - 11:12:35 | -4191 |
| PNWRO | 11:09:12 | -31.9 | Dark | Down | 43.2 | 349.7 | Up | 11:05:50 - 11:12:34 | -4203 |
| Yakima | 11:09:18 | -32.7 | Dark | Down | 44.0 | 349.5 | Up | 11:05:56 - 11:12:40 | -4208 |
| Toppenish/White Swan | 11:09:17 | -32.6 | Dark | Down | 43.8 | 349.5 | Up | 11:05:55 - 11:12:39 | -4220 |
| Goldendale | 11:09:18 | -33.1 | Dark | Down | 43.3 | 349.6 | Up | 11:05:56 - 11:12:40 | -4274 |
| The Dalles | 11:09:19 | -33.5 | Dark | Down | 43.1 | 349.6 | Up | 11:05:57 - 11:12:41 | -4301 |
| Maupin | 11:09:18 | -33.6 | Dark | Down | 42.7 | 349.7 | Up | 11:05:56 - 11:12:40 | -4329 |
| Redmond | 11:09:18 | -34.0 | Dark | Down | 41.8 | 349.8 | Up | 11:05:56 - 11:12:40 | -4399 |
| Sisters | 11:09:19 | -34.3 | Dark | Down | 41.9 | 349.8 | Up | 11:05:57 - 11:12:41 | -4409 |
| Bend | 11:09:18 | -34.2 | Dark | Down | 41.6 | 349.9 | Up | 11:05:56 - 11:12:40 | -4419 |
| Oregon Observatory | 11:09:18 | -34.4 | Dark | Down | 41.4 | 349.9 | Up | 11:05:56 - 11:12:40 | -4436 |
| La Pine/Gilchrist | 11:09:18 | -34.5 | Dark | Down | 41.2 | 349.9 | Up | 11:05:56 - 11:12:40 | -4452 |
| North Lake | 11:09:16 | -34.3 | Dark | Down | 40.7 | 350.0 | Up | 11:05:54 - 11:12:38 | -4466 |
| Paisley | 11:09:14 | -34.2 | Dark | Down | 40.2 | 350.1 | Up | 11:05:52 - 11:12:36 | -4495 |
| Lakeview | 11:09:13 | -34.3 | Dark | Down | 39.6 | 350.2 | Up | 11:05:51 - 11:12:35 | -4525 |
| Chiloquin | 11:09:19 | -35.2 | Dark | Down | 40.2 | 350.1 | Up | 11:05:57 - 11:12:41 | -4543 |
| Klamath Falls | 11:09:18 | -35.3 | Dark | Down | 39.8 | 350.1 | Up | 11:05:56 - 11:12:40 | -4565 |
| Cedarville | 11:09:12 | -34.4 | Dark | Down | 39.0 | 350.3 | Up | 11:05:50 - 11:12:34 | -4566 |
| Fall River/Burney | 11:09:17 | -35.5 | Dark | Down | 38.6 | 350.3 | Up | 11:05:55 - 11:12:39 | -4636 |
| Susanville | 11:09:14 | -35.2 | Dark | Down | 37.9 | 350.4 | Up | 11:05:52 - 11:12:36 | -4657 |
| Gimple | 11:09:14 | -35.4 | Dark | Down | 37.7 | 350.4 | Up | 11:05:52 - 11:12:36 | -4682 |
| Greenville | 11:09:14 | -35.5 | Dark | Down | 37.7 | 350.4 | Up | 11:05:52 - 11:12:36 | -4685 |
| Reno | 11:09:10 | -34.9 | Dark | Down | 37.0 | 350.6 | Up | 11:05:48 - 11:12:32 | -4689 |
| Portola | 11:09:12 | -35.3 | Dark | Down | 37.3 | 350.5 | Up | 11:05:50 - 11:12:34 | -4692 |
| Tonopah | 11:09:00 | -33.5 | Dark | Down | 35.2 | 350.9 | Up | 11:05:38 - 11:12:22 | -4696 |
| Quincy | 11:09:14 | -35.6 | Dark | Down | 37.5 | 350.5 | Up | 11:05:52 - 11:12:36 | -4699 |
| Yerington | 11:09:07 | -34.6 | Dark | Down | 36.3 | 350.7 | Up | 11:05:45 - 11:12:29 | -4704 |
| Carson City | 11:09:10 | -35.0 | Dark | Down | 36.6 | 350.6 | Up | 11:05:48 - 11:12:32 | -4712 |
| Hawthorne | 11:09:05 | -34.4 | Dark | Down | 35.8 | 350.8 | Up | 11:05:43 - 11:12:27 | -4716 |
| Patrick | 11:08:46 | -31.7 | Dark | Down | 32.2 | 351.4 | Up | 11:05:24 - 11:12:08 | -4723 |
| Gardnerville | 11:09:09 | -35.1 | Dark | Down | 36.4 | 350.7 | Up | 11:05:47 - 11:12:31 | -4727 |
| Indian Springs | 11:08:53 | -32.8 | Dark | Down | 33.5 | 351.2 | Up | 11:05:31 - 11:12:15 | -4729 |
| George/Scottsdale | 11:08:37 | -30.4 | Dark | Down | 30.2 | 351.7 | Up | 11:05:15 - 11:11:59 | -4729 |
| Henderson | 11:08:50 | -32.4 | Dark | Down | 32.9 | 351.3 | Up | 11:05:28 - 11:12:12 | -4732 |
| Kingman/Dolan Springs | 11:08:46 | -31.9 | Dark | Down | 32.0 | 351.4 | Up | 11:05:24 - 11:12:08 | -4744 |
| Beatty | 11:08:57 | -33.5 | Dark | Down | 34.0 | 351.1 | Up | 11:05:35 - 11:12:19 | -4751 |
| Laughlin/Bullhead City | 11:08:48 | -32.3 | Dark | Down | 32.0 | 351.4 | Up | 11:05:26 - 11:12:10 | -4766 |
| Lee Vining | 11:09:06 | -34.9 | Dark | Down | 35.3 | 350.8 | Up | 11:05:44 - 11:12:28 | -4770 |
| Mohave Valley | 11:08:48 | -32.3 | Dark | Down | 31.7 | 351.4 | Up | 11:05:26 - 11:12:10 | -4782 |
| Bishop | 11:09:03 | -34.6 | Dark | Down | 34.6 | 350.9 | Up | 11:05:41 - 11:12:25 | -4782 |
| Lake Havasu City | 11:08:47 | -32.2 | Dark | Down | 31.3 | 351.5 | Up | 11:05:25 - 11:12:09 | -4794 |
| Parker | 11:08:46 | -32.3 | Dark | Down | 30.9 | 351.5 | Up | 11:05:24 - 11:12:08 | -4813 |
| Blythe | 11:08:47 | -32.6 | Dark | Down | 30.5 | 351.5 | Up | 11:05:25 - 11:12:09 | -4855 |
| Yuma | 11:08:46 | -32.9 | Dark | Down | 29.6 | 351.6 | Low | 11:05:24 - 11:12:08 | -4908 |
| Calipatria | 11:08:50 | -33.5 | Dark | Down | 30.1 | 351.5 | Up | 11:05:28 - 11:12:12 | -4922 |
| Idyllwild | 11:08:55 | -34.3 | Dark | Down | 30.8 | 351.4 | Up | 11:05:33 - 11:12:17 | -4937 |
| CPSLO | 11:09:10 | -36.9 | Dark | Down | 32.9 | 351.0 | Up | 11:05:48 - 11:12:32 | -4987 |
| Wildwood | 11:09:02 | -35.7 | Dark | Down | 31.4 | 351.2 | Up | 11:05:40 - 11:12:24 | -4987 |
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, (2021/10/14 11:11UT) Object RA Dec mag sep mel PPM 000431 02:31:53.0 +89:15:50 2.0 7.65 113 PPM 003728 21:13:21.4 +81:13:52 6.1 1.28 104 PPM 003740 21:17:33.4 +82:31:06 8.4 0.75 105 PPM 003775 21:27:01.1 +81:44:35 9.2 0.56 105 PPM 003815 21:38:43.1 +82:06:49 10.4 0.07 105 517717 21:37:26.4 +82:10:26 14.4 105 Positions are for J2000
Event circumstances last updated at 2021/10/11 01:40:53 UT
Marc W. Buie, Southwest Research Institute