Event between (523965) 98XY95 and star GA1160:02968659 with event index number of 1591216
Geocentric closest approach at 2020/12/19 10:43:10 UTC
J2000 position of star is 08:00:10.4 +27:03:19
Equinox of date position of star is 08:01:27.1 +26:59:48
Stellar brightness G=14.1,
use SENSEUP=64
Star is 148 degrees from the moon.
Moon is 26% illuminated.
TNO apparent brightness V=22.2
[RECON map]
TNO is 38.0 AU from the Sun
and 37.1 AU from the Earth.
The TNO is moving 21.0
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 392 seconds.
The 1-sigma cross-track error in the shadow position is
3525 km.
The sky-plane scale is
26937.4 km/arcsec.
The TNO has an absolute magnitude Hv=6.4
Diameter=316.2 km assuming a 5% albedo -- 15.1 sec chord
Diameter=129.1 km assuming a 30% albedo -- 6.2 sec chord
Dynamical classification is SCATNEAR
Star training set for 523965, (2020/12/19 10:43UT) Object RA Dec mag sep mel Pollux 07:46:35.8 +27:58:26 1.1 3.44 144 PPM 098327 08:06:53.9 +27:28:09 6.1 1.30 149 PPM 098273 08:04:34.8 +26:12:27 7.0 1.05 149 PPM 098247 08:03:27.6 +26:34:41 8.9 0.61 148 PPM 098207 08:01:20.3 +26:55:50 10.2 0.07 148 523965 08:01:27.2 +26:59:47 14.1 148 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
2.3 sigma about the mid-time.
The median site spacing is 21.3 km
RECON observability=1.0 and success probability=12.4%
| 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 | 10:43:14 | -47.8 | Dark | Down | 65.6 | 201.9 | Up | 10:28:14 - 10:58:14 | 34 |
| Kelowna | 10:43:14 | -48.0 | Dark | Down | 66.0 | 201.9 | Up | 10:28:14 - 10:58:14 | -7 |
| Peachland | 10:43:15 | -48.2 | Dark | Down | 66.2 | 201.3 | Up | 10:28:15 - 10:58:15 | -25 |
| Summerland | 10:43:14 | -48.2 | Dark | Down | 66.3 | 201.6 | Up | 10:28:14 - 10:58:14 | -36 |
| Penticton | 10:43:14 | -48.2 | Dark | Down | 66.3 | 201.9 | Up | 10:28:14 - 10:58:14 | -40 |
| Oliver | 10:43:13 | -48.3 | Dark | Down | 66.6 | 202.2 | Up | 10:28:13 - 10:58:13 | -73 |
| Anarchist Mountain Observatory | 10:43:12 | -48.3 | Dark | Down | 66.8 | 202.8 | Up | 10:28:12 - 10:58:12 | -84 |
| Tonasket | 10:43:12 | -48.4 | Dark | Down | 67.1 | 202.9 | Up | 10:28:12 - 10:58:12 | -115 |
| Okanogan | 10:43:11 | -48.7 | Dark | Down | 67.4 | 202.9 | Up | 10:28:11 - 10:58:11 | -151 |
| Brewster | 10:43:11 | -48.9 | Dark | Down | 67.7 | 202.7 | Up | 10:28:11 - 10:58:11 | -182 |
| Manson/Chelan | 10:43:12 | -49.2 | Dark | Down | 68.0 | 202.1 | Up | 10:28:12 - 10:58:12 | -212 |
| Victoria | 10:43:24 | -50.9 | Dark | Down | 68.1 | 194.1 | Up | 10:28:24 - 10:58:24 | -232 |
| Entiat | 10:43:12 | -49.3 | Dark | Down | 68.2 | 202.1 | Up | 10:28:12 - 10:58:12 | -235 |
| Wenatchee | 10:43:12 | -49.5 | Dark | Down | 68.5 | 202.1 | Up | 10:28:12 - 10:58:12 | -262 |
| Ellensburg | 10:43:12 | -49.8 | Dark | Down | 68.9 | 202.0 | Up | 10:28:12 - 10:58:12 | -307 |
| Pasco | 10:43:06 | -49.1 | Dark | Down | 69.2 | 206.1 | Up | 10:28:06 - 10:58:06 | -341 |
| Yakima | 10:43:11 | -49.9 | Dark | Down | 69.3 | 202.4 | Up | 10:28:11 - 10:58:11 | -347 |
| PNWRO | 10:43:04 | -49.1 | Dark | Down | 69.4 | 206.9 | Up | 10:28:04 - 10:58:04 | -358 |
| Toppenish/White Swan | 10:43:10 | -49.9 | Dark | Down | 69.5 | 203.0 | Up | 10:28:10 - 10:58:10 | -363 |
| Goldendale | 10:43:10 | -50.4 | Dark | Down | 70.1 | 202.5 | Up | 10:28:10 - 10:58:10 | -428 |
| The Dalles | 10:43:11 | -50.7 | Dark | Down | 70.4 | 201.8 | Up | 10:28:11 - 10:58:11 | -460 |
| Niwot | 10:42:04 | -40.4 | Dark | Down | 66.4 | 243.8 | Up | 10:27:04 - 10:57:04 | -476 |
| SwRI | 10:42:04 | -40.5 | Dark | Down | 66.5 | 243.9 | Up | 10:27:04 - 10:57:04 | -489 |
| Maupin | 10:43:10 | -50.8 | Dark | Down | 70.7 | 202.5 | Up | 10:28:10 - 10:58:10 | -498 |
| Redmond | 10:43:09 | -51.1 | Dark | Down | 71.6 | 203.3 | Up | 10:28:09 - 10:58:09 | -589 |
| Sisters | 10:43:10 | -51.4 | Dark | Down | 71.7 | 202.2 | Up | 10:28:10 - 10:58:10 | -598 |
| Bend | 10:43:09 | -51.3 | Dark | Down | 71.8 | 203.2 | Up | 10:28:09 - 10:58:09 | -614 |
| Oregon Observatory | 10:43:09 | -51.4 | Dark | Down | 72.0 | 203.0 | Up | 10:28:09 - 10:58:09 | -635 |
| La Pine/Gilchrist | 10:43:09 | -51.5 | Dark | Down | 72.2 | 203.1 | Up | 10:28:09 - 10:58:09 | -657 |
| North Lake | 10:43:06 | -51.3 | Dark | Down | 72.5 | 205.3 | Up | 10:28:06 - 10:58:06 | -683 |
| Paisley | 10:43:03 | -51.2 | Dark | Down | 72.8 | 207.1 | Up | 10:28:03 - 10:58:03 | -728 |
| Lakeview | 10:43:02 | -51.2 | Dark | Down | 73.2 | 208.4 | Up | 10:28:02 - 10:58:02 | -773 |
| Klamath Falls | 10:43:07 | -52.2 | Dark | Down | 73.7 | 204.2 | Up | 10:28:07 - 10:58:07 | -809 |
| Cedarville | 10:43:00 | -51.3 | Dark | Down | 73.7 | 209.9 | Up | 10:28:00 - 10:58:00 | -833 |
| Fall River/Burney | 10:43:04 | -52.3 | Dark | Down | 74.6 | 207.1 | Up | 10:28:04 - 10:58:04 | -916 |
| Susanville | 10:42:59 | -51.9 | Dark | Down | 74.9 | 210.5 | Up | 10:27:59 - 10:57:59 | -958 |
| Gimple | 10:43:00 | -52.1 | Dark | Down | 75.2 | 210.4 | Up | 10:28:00 - 10:58:00 | -993 |
| Greenville | 10:43:00 | -52.2 | Dark | Down | 75.2 | 210.1 | Up | 10:28:00 - 10:58:00 | -995 |
| Portola | 10:42:58 | -51.9 | Dark | Down | 75.3 | 212.2 | Up | 10:27:58 - 10:57:58 | -1014 |
| Quincy | 10:42:59 | -52.2 | Dark | Down | 75.4 | 210.5 | Up | 10:27:59 - 10:57:59 | -1015 |
| Reno | 10:42:55 | -51.5 | Dark | Down | 75.3 | 214.8 | Up | 10:27:55 - 10:57:55 | -1021 |
| Carson City | 10:42:54 | -51.5 | Dark | Down | 75.6 | 215.6 | Up | 10:27:54 - 10:57:54 | -1057 |
| Yerington | 10:42:51 | -51.1 | Dark | Down | 75.4 | 218.0 | Up | 10:27:51 - 10:57:51 | -1057 |
| Gardnerville | 10:42:53 | -51.5 | Dark | Down | 75.7 | 216.3 | Up | 10:27:53 - 10:57:53 | -1080 |
| Hawthorne | 10:42:49 | -50.8 | Dark | Down | 75.5 | 220.6 | Up | 10:27:49 - 10:57:49 | -1088 |
| Tonopah | 10:42:42 | -49.8 | Dark | Down | 75.1 | 225.8 | Up | 10:27:42 - 10:57:42 | -1090 |
| Lee Vining | 10:42:49 | -51.3 | Dark | Down | 76.2 | 220.6 | Up | 10:27:49 - 10:57:49 | -1159 |
| Indian Springs | 10:42:33 | -48.8 | Dark | Down | 75.2 | 233.9 | Up | 10:27:33 - 10:57:33 | -1188 |
| Beatty | 10:42:38 | -49.6 | Dark | Down | 75.6 | 230.2 | Up | 10:27:38 - 10:57:38 | -1191 |
| Bishop | 10:42:45 | -50.8 | Dark | Down | 76.3 | 224.4 | Up | 10:27:45 - 10:57:45 | -1197 |
| Henderson | 10:42:29 | -48.3 | Dark | Down | 75.0 | 237.1 | Up | 10:27:29 - 10:57:29 | -1219 |
| Patrick | 10:42:24 | -47.4 | Dark | Down | 74.6 | 241.4 | Up | 10:27:24 - 10:57:24 | -1243 |
| DCO | 10:42:21 | -46.9 | Dark | Down | 74.2 | 243.7 | Up | 10:27:21 - 10:57:21 | -1248 |
| Kingman/Dolan Springs | 10:42:24 | -47.6 | Dark | Down | 74.8 | 241.7 | Up | 10:27:24 - 10:57:24 | -1272 |
| Searchlight/Boulder City | 10:42:28 | -48.3 | Dark | Down | 75.3 | 239.0 | Up | 10:27:28 - 10:57:28 | -1274 |
| Laughlin/Bullhead City | 10:42:26 | -48.0 | Dark | Down | 75.2 | 240.7 | Up | 10:27:26 - 10:57:26 | -1292 |
| Mohave Valley | 10:42:25 | -48.0 | Dark | Down | 75.3 | 241.7 | Up | 10:27:25 - 10:57:25 | -1319 |
| George/Scottsdale | 10:42:12 | -45.8 | Dark | Down | 73.8 | 250.3 | Up | 10:27:12 - 10:57:12 | -1340 |
| Lake Havasu City | 10:42:24 | -47.8 | Dark | Down | 75.3 | 243.5 | Up | 10:27:24 - 10:57:24 | -1350 |
| Parker | 10:42:23 | -47.8 | Dark | Down | 75.5 | 244.8 | Up | 10:27:23 - 10:57:23 | -1385 |
| Blythe | 10:42:23 | -48.1 | Dark | Down | 75.9 | 246.1 | Up | 10:27:23 - 10:57:23 | -1448 |
| CPSLO | 10:42:51 | -52.9 | Dark | Down | 79.0 | 223.7 | Up | 10:27:51 - 10:57:51 | -1478 |
| Idyllwild | 10:42:31 | -49.8 | Dark | Down | 77.4 | 241.2 | Up | 10:27:31 - 10:57:31 | -1509 |
| Calipatria | 10:42:26 | -48.9 | Dark | Down | 76.8 | 246.1 | Up | 10:27:26 - 10:57:26 | -1531 |
| Wildwood | 10:42:40 | -51.3 | Dark | Down | 78.5 | 234.9 | Up | 10:27:40 - 10:57:40 | -1536 |
| Yuma | 10:42:21 | -48.1 | Dark | Down | 76.3 | 249.4 | Up | 10:27:21 - 10:57:21 | -1543 |
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 523965, (2020/12/19 10:43UT) Object RA Dec mag sep mel Pollux 07:45:18.0 +28:01:33 1.1 3.44 144 PPM 098327 08:05:37.0 +27:31:49 6.1 1.30 149 PPM 098273 08:03:18.5 +26:16:03 7.0 1.05 149 PPM 098247 08:02:11.1 +26:38:16 8.9 0.61 148 PPM 098207 08:00:03.5 +26:59:21 10.2 0.07 148 523965 08:00:10.4 +27:03:19 14.1 148 Positions are for J2000
Event circumstances last updated at 2020/12/04 01:22:59 UT
Marc W. Buie, Southwest Research Institute