Event between (20000) Varuna and star GA1160:03062031 with event index number of 1025424
Geocentric closest approach at 2020/12/27 14:13:24 UTC
J2000 position of star is 08:35:25.8 +26:55:31
Equinox of date position of star is 08:36:41.3 +26:51:06
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 58 degrees from the moon.
Moon is 94% illuminated.
TNO apparent brightness V=20.1
[RECON map]
TNO is 44.0 AU from the Sun
and 43.2 AU from the Earth.
The TNO is moving 22.6
km/sec on the sky relative to the star, or,
2.6 arcsec/hr.
The 1-sigma error in the time of the event is 69 seconds.
The 1-sigma cross-track error in the shadow position is
1565 km.
The sky-plane scale is
31295.5 km/arcsec.
The TNO has an absolute magnitude Hv=3.6
Diameter=1148.2 km assuming a 5% albedo -- 50.7 sec chord
Diameter=468.7 km assuming a 30% albedo -- 20.7 sec chord
Dynamical classification is SCATEXTD
Star training set for 20000, (2020/12/27 14:13UT) Object RA Dec mag sep mel Pollux 07:46:35.8 +27:58:26 1.1 11.17 46 23Phi2Cnc 08:28:02.9 +26:51:53 6.4 1.93 56 PPM 098858 08:37:57.9 +25:51:47 8.3 1.03 58 PPM 098859 08:37:59.7 +27:04:17 9.7 0.36 58 PPM 098838 08:36:23.6 +26:52:13 10.8 0.07 58 20000 08:36:41.4 +26:51:06 16.5 58 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 18.6 km
RECON observability=0.4 and success probability=5.6%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Dunrhomin | 14:11:04 | -2.7 | CT | Down | 27.7 | 283.0 | Low | 14:04:48 - 14:17:20 | 2145 |
| Clarence Fulton | 14:11:57 | -15.6 | AT | Down | 38.4 | 267.1 | Up | 14:05:41 - 14:18:13 | 2052 |
| Kelowna | 14:11:55 | -15.6 | AT | Down | 38.6 | 267.3 | Up | 14:05:39 - 14:18:11 | 2027 |
| Peachland | 14:11:55 | -15.8 | AT | Down | 38.8 | 267.2 | Up | 14:05:39 - 14:18:11 | 2010 |
| Penticton | 14:11:54 | -15.6 | AT | Down | 38.6 | 267.5 | Up | 14:05:38 - 14:18:10 | 2007 |
| Summerland | 14:11:54 | -15.7 | AT | Down | 38.7 | 267.4 | Up | 14:05:38 - 14:18:10 | 2006 |
| Oliver | 14:11:53 | -15.5 | AT | Down | 38.6 | 267.8 | Up | 14:05:37 - 14:18:09 | 1990 |
| Anarchist Mountain Observatory | 14:11:51 | -15.3 | AT | Down | 38.5 | 268.1 | Up | 14:05:35 - 14:18:07 | 1990 |
| Tonasket | 14:11:51 | -15.3 | AT | Down | 38.6 | 268.2 | Up | 14:05:35 - 14:18:07 | 1971 |
| Okanogan | 14:11:49 | -15.3 | AT | Down | 38.7 | 268.4 | Up | 14:05:33 - 14:18:05 | 1948 |
| Brewster | 14:11:48 | -15.3 | AT | Down | 38.9 | 268.5 | Up | 14:05:32 - 14:18:04 | 1926 |
| Manson/Chelan | 14:11:47 | -15.5 | AT | Down | 39.1 | 268.3 | Up | 14:05:31 - 14:18:03 | 1900 |
| Wenatchee | 14:11:45 | -15.4 | AT | Down | 39.2 | 268.6 | Up | 14:05:29 - 14:18:01 | 1868 |
| Pasco | 14:11:39 | -14.3 | AT | Down | 38.4 | 270.4 | Up | 14:05:23 - 14:17:55 | 1858 |
| PNWRO | 14:11:38 | -14.1 | AT | Down | 38.3 | 270.7 | Up | 14:05:22 - 14:17:54 | 1855 |
| Ellensburg | 14:11:44 | -15.5 | AT | Down | 39.4 | 268.8 | Up | 14:05:28 - 14:18:00 | 1838 |
| Yakima | 14:11:42 | -15.4 | AT | Down | 39.4 | 269.1 | Up | 14:05:26 - 14:17:58 | 1815 |
| Toppenish/White Swan | 14:11:41 | -15.2 | AT | Down | 39.3 | 269.4 | Up | 14:05:25 - 14:17:57 | 1810 |
| Victoria | 14:11:54 | -17.7 | AT | Down | 41.2 | 265.3 | Up | 14:05:38 - 14:18:10 | 1799 |
| Goldendale | 14:11:39 | -15.3 | AT | Down | 39.6 | 269.5 | Up | 14:05:23 - 14:17:55 | 1762 |
| The Dalles | 14:11:39 | -15.5 | AT | Down | 39.9 | 269.4 | Up | 14:05:23 - 14:17:55 | 1734 |
| Maupin | 14:11:37 | -15.3 | AT | Down | 39.8 | 269.9 | Up | 14:05:21 - 14:17:53 | 1715 |
| Redmond | 14:11:33 | -15.1 | AT | Down | 39.9 | 270.5 | Up | 14:05:17 - 14:17:49 | 1660 |
| Sisters | 14:11:34 | -15.4 | AT | Down | 40.2 | 270.2 | Up | 14:05:18 - 14:17:50 | 1644 |
| Bend | 14:11:32 | -15.1 | AT | Down | 40.0 | 270.6 | Up | 14:05:16 - 14:17:48 | 1642 |
| Oregon Observatory | 14:11:32 | -15.1 | AT | Down | 40.1 | 270.7 | Up | 14:05:16 - 14:17:48 | 1626 |
| North Lake | 14:11:28 | -14.6 | AT | Down | 39.7 | 271.6 | Up | 14:05:12 - 14:17:44 | 1614 |
| La Pine/Gilchrist | 14:11:31 | -15.1 | AT | Down | 40.1 | 270.8 | Up | 14:05:15 - 14:17:47 | 1612 |
| Paisley | 14:11:26 | -14.2 | AT | Down | 39.4 | 272.3 | Up | 14:05:10 - 14:17:42 | 1597 |
| Lakeview | 14:11:23 | -13.9 | AT | Down | 39.3 | 272.8 | Up | 14:05:07 - 14:17:39 | 1576 |
| Cedarville | 14:11:21 | -13.5 | AT | Down | 39.1 | 273.4 | Up | 14:05:05 - 14:17:37 | 1545 |
| Klamath Falls | 14:11:25 | -14.9 | AT | Down | 40.3 | 271.8 | Up | 14:05:09 - 14:17:41 | 1513 |
| Tonopah | 14:11:03 | -10.2 | NT | Down | 36.6 | 277.8 | Up | 14:04:47 - 14:17:19 | 1473 |
| Patrick | 14:10:50 | -6.8 | NT | Down | 33.5 | 281.3 | Up | 14:04:34 - 14:17:06 | 1468 |
| Fall River/Burney | 14:11:20 | -14.3 | AT | Down | 40.0 | 273.1 | Up | 14:05:04 - 14:17:36 | 1459 |
| George/Scottsdale | 14:10:41 | -4.6 | CT | Down | 31.6 | 283.2 | Up | 14:04:25 - 14:16:57 | 1458 |
| Susanville | 14:11:16 | -13.5 | AT | Down | 39.4 | 274.0 | Up | 14:05:00 - 14:17:32 | 1455 |
| Indian Springs | 14:10:55 | -8.6 | NT | Down | 35.1 | 279.6 | Up | 14:04:39 - 14:17:11 | 1453 |
| Henderson | 14:10:53 | -7.9 | NT | Down | 34.5 | 280.3 | Up | 14:04:37 - 14:17:09 | 1453 |
| Kingman/Dolan Springs | 14:10:49 | -6.8 | NT | Down | 33.6 | 281.3 | Up | 14:04:33 - 14:17:05 | 1444 |
| Reno | 14:11:12 | -12.6 | AT | Down | 38.7 | 275.2 | Up | 14:04:56 - 14:17:28 | 1441 |
| Yerington | 14:11:09 | -12.0 | NT | Down | 38.2 | 276.0 | Up | 14:04:53 - 14:17:25 | 1437 |
| Hawthorne | 14:11:06 | -11.4 | NT | Down | 37.7 | 276.7 | Up | 14:04:50 - 14:17:22 | 1434 |
| Gimple | 14:11:16 | -13.6 | AT | Down | 39.5 | 274.1 | Up | 14:05:00 - 14:17:32 | 1428 |
| Portola | 14:11:14 | -13.2 | AT | Down | 39.2 | 274.6 | Up | 14:04:58 - 14:17:30 | 1427 |
| Greenville | 14:11:16 | -13.6 | AT | Down | 39.6 | 274.1 | Up | 14:05:00 - 14:17:32 | 1424 |
| Beatty | 14:10:58 | -9.5 | NT | Down | 36.0 | 278.9 | Up | 14:04:42 - 14:17:14 | 1421 |
| Carson City | 14:11:10 | -12.5 | AT | Down | 38.7 | 275.5 | Up | 14:04:54 - 14:17:26 | 1420 |
| Laughlin/Bullhead City | 14:10:49 | -7.2 | NT | Down | 34.0 | 281.1 | Up | 14:04:33 - 14:17:05 | 1417 |
| Quincy | 14:11:14 | -13.6 | AT | Down | 39.6 | 274.2 | Up | 14:04:58 - 14:17:30 | 1412 |
| Gardnerville | 14:11:09 | -12.4 | AT | Down | 38.6 | 275.7 | Up | 14:04:53 - 14:17:25 | 1406 |
| Mohave Valley | 14:10:48 | -7.1 | NT | Down | 34.0 | 281.3 | Up | 14:04:32 - 14:17:04 | 1400 |
| Lake Havasu City | 14:10:46 | -6.8 | NT | Down | 33.7 | 281.7 | Up | 14:04:30 - 14:17:02 | 1386 |
| Lee Vining | 14:11:05 | -11.6 | NT | Down | 38.0 | 276.8 | Up | 14:04:49 - 14:17:21 | 1375 |
| Bishop | 14:11:01 | -10.9 | NT | Down | 37.4 | 277.7 | Up | 14:04:45 - 14:17:17 | 1372 |
| Parker | 14:10:45 | -6.6 | NT | Down | 33.6 | 281.9 | Up | 14:04:29 - 14:17:01 | 1365 |
| Blythe | 14:10:43 | -6.6 | NT | Down | 33.8 | 282.1 | Up | 14:04:27 - 14:16:59 | 1316 |
| Yuma | 14:10:39 | -6.3 | NT | Down | 33.6 | 282.7 | Up | 14:04:23 - 14:16:55 | 1252 |
| Calipatria | 14:10:42 | -7.2 | NT | Down | 34.4 | 282.0 | Up | 14:04:26 - 14:16:58 | 1236 |
| Idyllwild | 14:10:45 | -8.3 | NT | Down | 35.5 | 281.1 | Up | 14:04:29 - 14:17:01 | 1218 |
| Wildwood | 14:10:49 | -9.9 | NT | Down | 37.1 | 280.0 | Up | 14:04:33 - 14:17:05 | 1146 |
| CPSLO | 14:10:56 | -11.9 | NT | Down | 38.9 | 278.1 | Up | 14:04:40 - 14:17:12 | 1124 |
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 20000, (2020/12/27 14:13UT) Object RA Dec mag sep mel Pollux 07:45:18.0 +28:01:33 1.1 11.17 46 23Phi2Cnc 08:26:47.0 +26:56:06 6.4 1.93 56 PPM 098858 08:36:42.8 +25:56:14 8.3 1.03 58 PPM 098859 08:36:44.1 +27:08:43 9.7 0.36 58 PPM 098838 08:35:07.9 +26:56:37 10.8 0.07 58 20000 08:35:25.8 +26:55:31 16.5 58 Positions are for J2000
Event circumstances last updated at 2020/12/20 23:35:59 UT
Marc W. Buie, Southwest Research Institute