Event between (495613) 15FG345 and star GA0920:03914576 with event index number of 1167483
Geocentric closest approach at 2021/04/11 04:54:03 UTC
J2000 position of star is 14:32:14.0 +03:05:37
Equinox of date position of star is 14:33:17.8 +03:00:05
Stellar brightness G=15.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 154 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=21.3
[RECON map]
TNO is 40.0 AU from the Sun
and 39.0 AU from the Earth.
The TNO is moving 24.8
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 64 seconds.
The 1-sigma cross-track error in the shadow position is
1637 km.
The sky-plane scale is
28322.1 km/arcsec.
The TNO has an absolute magnitude Hv=5.3
Diameter=515.2 km assuming a 5% albedo -- 20.8 sec chord
Diameter=210.3 km assuming a 30% albedo -- 8.5 sec chord
Dynamical classification is SCATEXTD
Star training set for 495613, (2021/04/11 04:54UT) Object RA Dec mag sep mel Arcturus 14:16:38.0 +19:04:21 0.0 16.58 151 27Bet Lib 15:18:09.3 -09:27:36 2.6 16.74 142 PPM 160711 14:31:49.4 +04:40:43 6.0 1.72 154 PPM 160745 14:34:02.0 +03:34:00 7.8 0.59 154 PPM 160739 14:33:37.0 +03:02:34 9.2 0.09 154 495613 14:33:18.5 +03:00:02 15.8 154 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 31.5 km
RECON observability=0.6 and success probability=13.5%
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 | 04:57:24 | -19.5 | Dark | Down | 19.1 | 109.1 | Really Low | 04:51:34 - 05:03:13 | -1359 |
Kelowna | 04:57:24 | -19.7 | Dark | Down | 19.2 | 108.9 | Really Low | 04:51:35 - 05:03:14 | -1397 |
Peachland | 04:57:25 | -19.6 | Dark | Down | 19.0 | 108.6 | Really Low | 04:51:35 - 05:03:14 | -1409 |
Summerland | 04:57:25 | -19.7 | Dark | Down | 19.1 | 108.6 | Really Low | 04:51:36 - 05:03:15 | -1423 |
Penticton | 04:57:25 | -19.8 | Dark | Down | 19.2 | 108.7 | Really Low | 04:51:36 - 05:03:15 | -1428 |
Oliver | 04:57:26 | -20.1 | Dark | Down | 19.3 | 108.6 | Really Low | 04:51:36 - 05:03:15 | -1461 |
Anarchist Mountain Observatory | 04:57:26 | -20.3 | Dark | Down | 19.5 | 108.7 | Really Low | 04:51:37 - 05:03:16 | -1476 |
Tonasket | 04:57:27 | -20.4 | Dark | Down | 19.6 | 108.5 | Really Low | 04:51:37 - 05:03:16 | -1506 |
Okanogan | 04:57:27 | -20.6 | Dark | Down | 19.6 | 108.3 | Really Low | 04:51:38 - 05:03:17 | -1539 |
Victoria | 04:57:32 | -18.5 | Dark | Down | 17.1 | 105.2 | Really Low | 04:51:42 - 05:03:21 | -1547 |
Brewster | 04:57:28 | -20.7 | Dark | Down | 19.5 | 108.0 | Really Low | 04:51:39 - 05:03:18 | -1566 |
Manson/Chelan | 04:57:29 | -20.6 | Dark | Down | 19.4 | 107.7 | Really Low | 04:51:40 - 05:03:19 | -1588 |
Wenatchee | 04:57:30 | -20.8 | Dark | Down | 19.4 | 107.4 | Really Low | 04:51:41 - 05:03:20 | -1635 |
Ellensburg | 04:57:31 | -21.0 | Dark | Down | 19.4 | 107.0 | Really Low | 04:51:42 - 05:03:21 | -1676 |
Yakima | 04:57:32 | -21.2 | Dark | Down | 19.5 | 106.9 | Really Low | 04:51:42 - 05:03:21 | -1716 |
Toppenish/White Swan | 04:57:32 | -21.5 | Dark | Down | 19.7 | 107.0 | Really Low | 04:51:43 - 05:03:22 | -1736 |
Pasco | 04:57:31 | -22.2 | Dark | Down | 20.5 | 107.9 | Low | 04:51:41 - 05:03:20 | -1739 |
PNWRO | 04:57:31 | -22.5 | Dark | Down | 20.8 | 108.0 | Low | 04:51:42 - 05:03:21 | -1761 |
Goldendale | 04:57:34 | -21.6 | Dark | Down | 19.5 | 106.4 | Really Low | 04:51:44 - 05:03:23 | -1792 |
The Dalles | 04:57:35 | -21.6 | Dark | Down | 19.4 | 106.1 | Really Low | 04:51:45 - 05:03:24 | -1817 |
Maupin | 04:57:35 | -21.9 | Dark | Down | 19.5 | 106.0 | Really Low | 04:51:46 - 05:03:25 | -1857 |
Redmond | 04:57:37 | -22.4 | Dark | Down | 19.7 | 105.6 | Really Low | 04:51:48 - 05:03:27 | -1947 |
Sisters | 04:57:37 | -22.2 | Dark | Down | 19.5 | 105.3 | Really Low | 04:51:48 - 05:03:27 | -1947 |
Bend | 04:57:38 | -22.4 | Dark | Down | 19.7 | 105.5 | Really Low | 04:51:48 - 05:03:27 | -1969 |
Oregon Observatory | 04:57:38 | -22.5 | Dark | Down | 19.7 | 105.3 | Really Low | 04:51:48 - 05:03:27 | -1987 |
La Pine/Gilchrist | 04:57:38 | -22.6 | Dark | Down | 19.7 | 105.2 | Really Low | 04:51:49 - 05:03:28 | -2008 |
North Lake | 04:57:38 | -23.2 | Dark | Down | 20.2 | 105.5 | Low | 04:51:49 - 05:03:28 | -2047 |
Paisley | 04:57:39 | -23.7 | Dark | Down | 20.6 | 105.6 | Low | 04:51:49 - 05:03:28 | -2100 |
Lakeview | 04:57:39 | -24.2 | Dark | Down | 20.9 | 105.5 | Low | 04:51:49 - 05:03:28 | -2149 |
Klamath Falls | 04:57:41 | -23.3 | Dark | Down | 19.9 | 104.5 | Really Low | 04:51:52 - 05:03:31 | -2155 |
Dunrhomin | 04:57:15 | -33.5 | Dark | Down | 32.1 | 116.7 | Up | 04:51:25 - 05:03:04 | -2182 |
Cedarville | 04:57:40 | -24.7 | Dark | Down | 21.2 | 105.4 | Low | 04:51:50 - 05:03:29 | -2214 |
Fall River/Burney | 04:57:42 | -24.3 | Dark | Down | 20.4 | 104.4 | Low | 04:51:53 - 05:03:32 | -2272 |
Susanville | 04:57:42 | -25.1 | Dark | Down | 21.1 | 104.7 | Low | 04:51:53 - 05:03:32 | -2331 |
Gimple | 04:57:43 | -25.1 | Dark | Down | 21.0 | 104.4 | Low | 04:51:54 - 05:03:33 | -2361 |
Greenville | 04:57:43 | -25.1 | Dark | Down | 21.0 | 104.3 | Low | 04:51:54 - 05:03:33 | -2361 |
Quincy | 04:57:43 | -25.2 | Dark | Down | 21.0 | 104.3 | Low | 04:51:54 - 05:03:33 | -2382 |
Portola | 04:57:43 | -25.6 | Dark | Down | 21.4 | 104.6 | Low | 04:51:53 - 05:03:32 | -2391 |
Reno | 04:57:42 | -26.1 | Dark | Down | 22.0 | 104.9 | Low | 04:51:53 - 05:03:32 | -2413 |
Carson City | 04:57:42 | -26.4 | Dark | Down | 22.1 | 104.8 | Low | 04:51:53 - 05:03:32 | -2450 |
Yerington | 04:57:42 | -26.9 | Dark | Down | 22.6 | 105.2 | Low | 04:51:53 - 05:03:32 | -2465 |
Gardnerville | 04:57:43 | -26.5 | Dark | Down | 22.2 | 104.7 | Low | 04:51:54 - 05:03:33 | -2475 |
Hawthorne | 04:57:42 | -27.5 | Dark | Down | 23.1 | 105.4 | Low | 04:51:52 - 05:03:31 | -2509 |
Tonopah | 04:57:40 | -28.6 | Dark | Down | 24.3 | 106.2 | Low | 04:51:51 - 05:03:30 | -2544 |
Lee Vining | 04:57:43 | -27.5 | Dark | Down | 22.9 | 104.8 | Low | 04:51:54 - 05:03:33 | -2571 |
Bishop | 04:57:43 | -28.3 | Dark | Down | 23.6 | 105.1 | Low | 04:51:53 - 05:03:32 | -2627 |
Beatty | 04:57:40 | -29.6 | Dark | Down | 25.0 | 106.0 | Low | 04:51:51 - 05:03:30 | -2660 |
Indian Springs | 04:57:39 | -30.5 | Dark | Down | 25.9 | 106.6 | Low | 04:51:50 - 05:03:29 | -2684 |
Henderson | 04:57:38 | -31.3 | Dark | Down | 26.6 | 106.8 | Low | 04:51:49 - 05:03:28 | -2732 |
Patrick | 04:57:37 | -32.4 | Dark | Down | 27.6 | 107.3 | Low | 04:51:48 - 05:03:27 | -2786 |
Kingman/Dolan Springs | 04:57:37 | -32.4 | Dark | Down | 27.6 | 107.1 | Low | 04:51:48 - 05:03:27 | -2811 |
Laughlin/Bullhead City | 04:57:39 | -32.1 | Dark | Down | 27.2 | 106.7 | Low | 04:51:49 - 05:03:28 | -2819 |
Mohave Valley | 04:57:39 | -32.3 | Dark | Down | 27.3 | 106.6 | Low | 04:51:49 - 05:03:28 | -2848 |
CPSLO | 04:57:48 | -28.1 | Dark | Down | 22.4 | 102.7 | Low | 04:51:59 - 05:03:38 | -2861 |
Lake Havasu City | 04:57:39 | -32.7 | Dark | Down | 27.6 | 106.5 | Low | 04:51:49 - 05:03:28 | -2887 |
Parker | 04:57:39 | -33.0 | Dark | Down | 27.7 | 106.4 | Low | 04:51:50 - 05:03:29 | -2924 |
George/Scottsdale | 04:57:34 | -34.7 | Dark | Down | 29.7 | 107.8 | Low | 04:51:45 - 05:03:24 | -2940 |
Wildwood | 04:57:47 | -30.2 | Dark | Down | 24.3 | 103.5 | Low | 04:51:57 - 05:03:36 | -2972 |
Blythe | 04:57:40 | -33.1 | Dark | Down | 27.6 | 105.9 | Low | 04:51:50 - 05:03:29 | -2982 |
Idyllwild | 04:57:44 | -31.7 | Dark | Down | 25.9 | 104.6 | Low | 04:51:54 - 05:03:33 | -2992 |
Calipatria | 04:57:42 | -32.8 | Dark | Down | 27.0 | 105.1 | Low | 04:51:53 - 05:03:32 | -3044 |
Yuma | 04:57:41 | -33.7 | Dark | Down | 27.8 | 105.4 | Low | 04:51:51 - 05:03:30 | -3081 |
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 495613, (2021/04/11 04:54UT) Object RA Dec mag sep mel Arcturus 14:15:38.1 +19:10:15 0.0 16.58 151 27Bet Lib 15:17:00.3 -09:22:59 2.6 16.74 142 PPM 160711 14:30:45.4 +04:46:20 6.0 1.72 154 PPM 160745 14:32:57.7 +03:39:34 7.8 0.59 154 PPM 160739 14:32:32.6 +03:08:09 9.2 0.09 154 495613 14:32:14.0 +03:05:37 15.8 154 Positions are for J2000
Event circumstances last updated at 2021/01/20 20:08:03 UT
Marc W. Buie, Southwest Research Institute