Event between (523597) 02QX47 and star GA1080:00204642 with event index number of 363957
Geocentric closest approach at 2020/10/21 11:34:12 UTC
J2000 position of star is 01:56:32.2 +19:04:27
Equinox of date position of star is 01:57:39.8 +19:10:25
Stellar brightness G=15.0,
use SENSEUP=128
Star is 121 degrees from the moon.
Moon is 28% illuminated.
TNO apparent brightness V=24.1
[RECON map]
TNO is 25.7 AU from the Sun
and 24.7 AU from the Earth.
The TNO is moving 24.4
km/sec on the sky relative to the star, or,
4.9 arcsec/hr.
The 1-sigma error in the time of the event is 80 seconds.
The 1-sigma cross-track error in the shadow position is
1170 km.
The sky-plane scale is
17947.9 km/arcsec.
The TNO has an absolute magnitude Hv=10.0
Diameter=104.7 km assuming a 5% albedo -- 2.5 sec chord
Diameter=42.8 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
Star training set for 523597, (2020/10/21 11:34UT) Object RA Dec mag sep mel Aldebaran 04:37:07.0 +16:32:58 0.8 37.95 156 6Bet Ari 01:55:47.6 +20:54:32 2.6 1.79 121 15 Ari 02:11:47.0 +19:35:51 5.7 3.35 124 PPM 117832 01:59:30.0 +18:22:30 8.4 0.91 121 PPM 117799 01:57:37.9 +19:24:53 9.7 0.24 121 PPM 117812 01:58:18.1 +19:03:35 10.9 0.19 121 523597 01:57:40.9 +19:10:31 15.0 121 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 25.5 km
RECON observability=1.0 and success probability=33.1%
| 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 | 11:31:09 | -29.0 | Dark | Down | 36.9 | 254.7 | Up | 11:24:00 - 11:38:19 | -303 |
| Kelowna | 11:31:09 | -29.2 | Dark | Down | 37.1 | 254.9 | Up | 11:24:00 - 11:38:19 | -344 |
| Peachland | 11:31:10 | -29.4 | Dark | Down | 37.3 | 254.7 | Up | 11:24:00 - 11:38:19 | -356 |
| Summerland | 11:31:09 | -29.4 | Dark | Down | 37.3 | 254.9 | Up | 11:24:00 - 11:38:19 | -371 |
| Penticton | 11:31:09 | -29.4 | Dark | Down | 37.2 | 255.0 | Up | 11:24:00 - 11:38:19 | -378 |
| Oliver | 11:31:08 | -29.5 | Dark | Down | 37.3 | 255.3 | Up | 11:23:59 - 11:38:18 | -414 |
| Anarchist Mountain Observatory | 11:31:08 | -29.4 | Dark | Down | 37.2 | 255.6 | Up | 11:23:58 - 11:38:17 | -431 |
| Tonasket | 11:31:08 | -29.6 | Dark | Down | 37.4 | 255.7 | Up | 11:23:58 - 11:38:17 | -463 |
| Victoria | 11:31:15 | -32.1 | Dark | Down | 39.9 | 252.3 | Up | 11:24:06 - 11:38:25 | -491 |
| Okanogan | 11:31:07 | -29.8 | Dark | Down | 37.5 | 255.9 | Up | 11:23:58 - 11:38:17 | -499 |
| Brewster | 11:31:07 | -30.0 | Dark | Down | 37.7 | 255.9 | Up | 11:23:58 - 11:38:17 | -528 |
| Manson/Chelan | 11:31:08 | -30.3 | Dark | Down | 38.0 | 255.7 | Up | 11:23:58 - 11:38:17 | -551 |
| Entiat | 11:31:08 | -30.4 | Dark | Down | 38.1 | 255.8 | Up | 11:23:58 - 11:38:17 | -574 |
| Wenatchee | 11:31:08 | -30.5 | Dark | Down | 38.3 | 255.9 | Up | 11:23:58 - 11:38:17 | -601 |
| Ellensburg | 11:31:08 | -30.8 | Dark | Down | 38.5 | 256.1 | Up | 11:23:58 - 11:38:17 | -645 |
| Yakima | 11:31:07 | -31.0 | Dark | Down | 38.6 | 256.4 | Up | 11:23:58 - 11:38:17 | -687 |
| Toppenish/White Swan | 11:31:06 | -30.9 | Dark | Down | 38.6 | 256.7 | Up | 11:23:57 - 11:38:16 | -710 |
| Pasco | 11:31:04 | -30.1 | Dark | Down | 37.7 | 257.8 | Up | 11:23:54 - 11:38:13 | -718 |
| PNWRO | 11:31:03 | -30.0 | Dark | Down | 37.6 | 258.2 | Up | 11:23:54 - 11:38:13 | -744 |
| Goldendale | 11:31:07 | -31.4 | Dark | Down | 39.0 | 256.7 | Up | 11:23:57 - 11:38:16 | -769 |
| The Dalles | 11:31:07 | -31.7 | Dark | Down | 39.3 | 256.6 | Up | 11:23:58 - 11:38:17 | -794 |
| Maupin | 11:31:07 | -31.7 | Dark | Down | 39.3 | 257.0 | Up | 11:23:57 - 11:38:16 | -838 |
| Sisters | 11:31:07 | -32.3 | Dark | Down | 39.8 | 257.3 | Up | 11:23:57 - 11:38:16 | -932 |
| Redmond | 11:31:06 | -32.1 | Dark | Down | 39.6 | 257.7 | Up | 11:23:56 - 11:38:15 | -934 |
| Bend | 11:31:06 | -32.2 | Dark | Down | 39.7 | 257.7 | Up | 11:23:56 - 11:38:15 | -957 |
| Oregon Observatory | 11:31:06 | -32.4 | Dark | Down | 39.8 | 257.8 | Up | 11:23:56 - 11:38:15 | -976 |
| La Pine/Gilchrist | 11:31:06 | -32.5 | Dark | Down | 39.9 | 257.9 | Up | 11:23:56 - 11:38:15 | -998 |
| North Lake | 11:31:04 | -32.2 | Dark | Down | 39.6 | 258.7 | Up | 11:23:55 - 11:38:14 | -1043 |
| Paisley | 11:31:03 | -32.1 | Dark | Down | 39.4 | 259.5 | Up | 11:23:53 - 11:38:12 | -1101 |
| Klamath Falls | 11:31:05 | -33.1 | Dark | Down | 40.4 | 258.9 | Up | 11:23:55 - 11:38:14 | -1155 |
| Lakeview | 11:31:02 | -32.1 | Dark | Down | 39.4 | 260.0 | Up | 11:23:53 - 11:38:12 | -1155 |
| Cedarville | 11:31:01 | -32.2 | Dark | Down | 39.4 | 260.7 | Up | 11:23:51 - 11:38:10 | -1225 |
| Niwot | 11:30:31 | -21.3 | Dark | Down | 28.2 | 271.9 | Low | 11:23:21 - 11:37:40 | -1254 |
| SwRI | 11:30:31 | -21.3 | Dark | Down | 28.3 | 271.9 | Low | 11:23:21 - 11:37:40 | -1266 |
| Fall River/Burney | 11:31:03 | -33.2 | Dark | Down | 40.4 | 260.1 | Up | 11:23:54 - 11:38:13 | -1281 |
| Susanville | 11:31:01 | -32.8 | Dark | Down | 39.9 | 261.2 | Up | 11:23:51 - 11:38:10 | -1347 |
| Greenville | 11:31:01 | -33.1 | Dark | Down | 40.2 | 261.2 | Up | 11:23:52 - 11:38:11 | -1378 |
| Gimple | 11:31:01 | -33.0 | Dark | Down | 40.1 | 261.3 | Up | 11:23:52 - 11:38:11 | -1378 |
| Quincy | 11:31:01 | -33.1 | Dark | Down | 40.2 | 261.4 | Up | 11:23:52 - 11:38:11 | -1400 |
| Portola | 11:31:00 | -32.8 | Dark | Down | 39.9 | 261.9 | Up | 11:23:51 - 11:38:10 | -1412 |
| Reno | 11:30:58 | -32.4 | Dark | Down | 39.4 | 262.5 | Up | 11:23:49 - 11:38:08 | -1439 |
| Carson City | 11:30:58 | -32.4 | Dark | Down | 39.4 | 262.9 | Up | 11:23:48 - 11:38:07 | -1478 |
| Yerington | 11:30:56 | -32.0 | Dark | Down | 39.0 | 263.5 | Up | 11:23:47 - 11:38:06 | -1496 |
| Gardnerville | 11:30:58 | -32.5 | Dark | Down | 39.4 | 263.1 | Up | 11:23:48 - 11:38:07 | -1504 |
| Hawthorne | 11:30:55 | -31.7 | Dark | Down | 38.6 | 264.2 | Up | 11:23:45 - 11:38:04 | -1545 |
| Tonopah | 11:30:51 | -30.7 | Dark | Down | 37.6 | 265.5 | Up | 11:23:42 - 11:38:01 | -1589 |
| Lee Vining | 11:30:56 | -32.2 | Dark | Down | 39.0 | 264.3 | Up | 11:23:46 - 11:38:05 | -1608 |
| Bishop | 11:30:53 | -31.8 | Dark | Down | 38.5 | 265.3 | Up | 11:23:44 - 11:38:03 | -1671 |
| Beatty | 11:30:50 | -30.6 | Dark | Down | 37.3 | 266.7 | Up | 11:23:40 - 11:37:59 | -1713 |
| Indian Springs | 11:30:47 | -29.8 | Dark | Down | 36.4 | 267.6 | Up | 11:23:38 - 11:37:57 | -1742 |
| Henderson | 11:30:45 | -29.3 | Dark | Down | 35.9 | 268.4 | Up | 11:23:36 - 11:37:55 | -1795 |
| Patrick | 11:30:42 | -28.5 | Dark | Down | 35.0 | 269.5 | Up | 11:23:33 - 11:37:52 | -1855 |
| Searchlight/Boulder City | 11:30:44 | -29.3 | Dark | Down | 35.9 | 268.9 | Up | 11:23:35 - 11:37:54 | -1858 |
| Kingman/Dolan Springs | 11:30:42 | -28.7 | Dark | Down | 35.2 | 269.6 | Up | 11:23:33 - 11:37:52 | -1881 |
| DCO | 11:30:40 | -28.0 | Dark | Down | 34.4 | 270.1 | Up | 11:23:31 - 11:37:50 | -1883 |
| Laughlin/Bullhead City | 11:30:43 | -29.1 | Dark | Down | 35.6 | 269.3 | Up | 11:23:34 - 11:37:53 | -1888 |
| CPSLO | 11:30:57 | -33.9 | Dark | Down | 40.5 | 265.5 | Up | 11:23:48 - 11:38:07 | -1905 |
| Mohave Valley | 11:30:43 | -29.1 | Dark | Down | 35.6 | 269.5 | Up | 11:23:34 - 11:37:53 | -1918 |
| Lake Havasu City | 11:30:43 | -29.0 | Dark | Down | 35.4 | 269.9 | Up | 11:23:33 - 11:37:52 | -1960 |
| Parker | 11:30:42 | -29.0 | Dark | Down | 35.4 | 270.2 | Up | 11:23:33 - 11:37:52 | -1998 |
| George/Scottsdale | 11:30:37 | -27.1 | Dark | Down | 33.4 | 271.8 | Up | 11:23:27 - 11:37:46 | -2024 |
| Wildwood | 11:30:52 | -32.5 | Dark | Down | 38.9 | 267.8 | Up | 11:23:42 - 11:38:01 | -2030 |
| Blythe | 11:30:43 | -29.3 | Dark | Down | 35.6 | 270.4 | Up | 11:23:33 - 11:37:52 | -2058 |
| Idyllwild | 11:30:47 | -31.0 | Dark | Down | 37.4 | 269.1 | Up | 11:23:38 - 11:37:57 | -2060 |
| Calipatria | 11:30:45 | -30.1 | Dark | Down | 36.4 | 270.2 | Up | 11:23:35 - 11:37:54 | -2119 |
| Yuma | 11:30:42 | -29.4 | Dark | Down | 35.6 | 271.0 | Up | 11:23:33 - 11:37:52 | -2160 |
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 523597, (2020/10/21 11:34UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 37.95 156 6Bet Ari 01:54:38.5 +20:48:27 2.6 1.79 121 15 Ari 02:10:37.7 +19:30:01 5.7 3.35 124 PPM 117832 01:58:21.5 +18:16:27 8.4 0.91 121 PPM 117799 01:56:29.1 +19:18:49 9.7 0.24 121 PPM 117812 01:57:09.4 +18:57:32 10.9 0.19 121 523597 01:56:32.2 +19:04:27 15.0 121 Positions are for J2000
Event circumstances last updated at 2020/06/21 22:16:12 UT
Marc W. Buie, Southwest Research Institute