Event between (468861) 13LU28 and star GA1440:04765004 with event index number of 1061631
Geocentric closest approach at 2021/03/16 06:32:17 UTC
J2000 position of star is 13:45:00.7 +54:31:33
Equinox of date position of star is 13:45:48.2 +54:25:12
Stellar brightness G=15.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 118 degrees from the moon.
Moon is 8% illuminated.
TNO apparent brightness V=19.1
[RECON map]
TNO is 11.0 AU from the Sun
and 10.4 AU from the Earth.
The TNO is moving 41.1
km/sec on the sky relative to the star, or,
19.6 arcsec/hr.
The 1-sigma error in the time of the event is 11 seconds.
The 1-sigma cross-track error in the shadow position is
493 km.
The sky-plane scale is
7549.7 km/arcsec.
The TNO has an absolute magnitude Hv=8.4
Diameter=127.6 km assuming a 5% albedo -- 3.1 sec chord
Diameter=52.1 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
Star training set for 468861, (2021/03/16 06:32UT) Object RA Dec mag sep mel Vega 18:37:39.4 +38:48:16 0.0 50.02 99 Mizar 13:24:46.5 +54:48:54 2.3 3.07 118 83 UMa 13:41:32.4 +54:34:29 4.7 0.64 118 PPM 034165 13:43:18.1 +55:37:17 7.7 1.25 117 PPM 034177 13:44:53.1 +54:23:45 9.2 0.14 118 468861 13:45:48.3 +54:25:12 15.6 118 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 26.4 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 | 06:33:33 | -37.6 | Dark | Down | 58.1 | 61.4 | Up | 06:32:06 - 06:34:59 | -2402 |
| Kelowna | 06:33:34 | -37.9 | Dark | Down | 57.8 | 60.8 | Up | 06:32:07 - 06:35:00 | -2442 |
| Peachland | 06:33:34 | -37.9 | Dark | Down | 57.6 | 60.6 | Up | 06:32:08 - 06:35:01 | -2451 |
| Summerland | 06:33:34 | -38.0 | Dark | Down | 57.6 | 60.4 | Up | 06:32:07 - 06:35:00 | -2468 |
| Penticton | 06:33:34 | -38.1 | Dark | Down | 57.6 | 60.4 | Up | 06:32:07 - 06:35:00 | -2476 |
| Oliver | 06:33:34 | -38.4 | Dark | Down | 57.4 | 59.9 | Up | 06:32:07 - 06:35:00 | -2514 |
| Victoria | 06:33:40 | -37.6 | Dark | Down | 54.9 | 58.1 | Up | 06:32:13 - 06:35:06 | -2529 |
| Anarchist Mountain Observatory | 06:33:33 | -38.6 | Dark | Down | 57.5 | 59.7 | Up | 06:32:07 - 06:35:00 | -2535 |
| Tonasket | 06:33:34 | -38.9 | Dark | Down | 57.3 | 59.3 | Up | 06:32:07 - 06:35:00 | -2567 |
| Okanogan | 06:33:34 | -39.1 | Dark | Down | 57.0 | 58.8 | Up | 06:32:07 - 06:35:00 | -2601 |
| Brewster | 06:33:34 | -39.3 | Dark | Down | 56.7 | 58.4 | Up | 06:32:08 - 06:35:01 | -2627 |
| Manson/Chelan | 06:33:35 | -39.3 | Dark | Down | 56.4 | 58.0 | Up | 06:32:08 - 06:35:01 | -2644 |
| Wenatchee | 06:33:35 | -39.7 | Dark | Down | 56.1 | 57.4 | Up | 06:32:08 - 06:35:01 | -2693 |
| Ellensburg | 06:33:36 | -40.0 | Dark | Down | 55.7 | 56.8 | Up | 06:32:09 - 06:35:02 | -2733 |
| Yakima | 06:33:36 | -40.3 | Dark | Down | 55.5 | 56.3 | Up | 06:32:09 - 06:35:02 | -2776 |
| Toppenish/White Swan | 06:33:35 | -40.5 | Dark | Down | 55.5 | 56.1 | Up | 06:32:09 - 06:35:02 | -2801 |
| Pasco | 06:33:33 | -41.1 | Dark | Down | 56.1 | 56.2 | Up | 06:32:07 - 06:35:00 | -2831 |
| Goldendale | 06:33:36 | -40.8 | Dark | Down | 54.9 | 55.4 | Up | 06:32:09 - 06:35:02 | -2854 |
| PNWRO | 06:33:33 | -41.4 | Dark | Down | 56.1 | 55.9 | Up | 06:32:06 - 06:34:59 | -2860 |
| The Dalles | 06:33:37 | -40.9 | Dark | Down | 54.6 | 55.1 | Up | 06:32:10 - 06:35:03 | -2872 |
| Maupin | 06:33:36 | -41.3 | Dark | Down | 54.4 | 54.6 | Up | 06:32:10 - 06:35:03 | -2917 |
| Sisters | 06:33:37 | -41.8 | Dark | Down | 53.6 | 53.6 | Up | 06:32:11 - 06:35:04 | -3002 |
| Redmond | 06:33:37 | -42.0 | Dark | Down | 53.8 | 53.6 | Up | 06:32:10 - 06:35:03 | -3010 |
| Bend | 06:33:37 | -42.1 | Dark | Down | 53.6 | 53.3 | Up | 06:32:10 - 06:35:03 | -3031 |
| Oregon Observatory | 06:33:37 | -42.2 | Dark | Down | 53.4 | 53.1 | Up | 06:32:11 - 06:35:04 | -3047 |
| La Pine/Gilchrist | 06:33:37 | -42.3 | Dark | Down | 53.3 | 52.9 | Up | 06:32:11 - 06:35:04 | -3067 |
| North Lake | 06:33:36 | -42.9 | Dark | Down | 53.4 | 52.5 | Up | 06:32:10 - 06:35:03 | -3121 |
| Chiloquin | 06:33:38 | -43.1 | Dark | Down | 52.4 | 51.7 | Up | 06:32:11 - 06:35:04 | -3176 |
| Paisley | 06:33:36 | -43.5 | Dark | Down | 53.2 | 51.9 | Up | 06:32:09 - 06:35:02 | -3184 |
| Klamath Falls | 06:33:38 | -43.4 | Dark | Down | 52.2 | 51.4 | Up | 06:32:11 - 06:35:04 | -3213 |
| Lakeview | 06:33:35 | -44.0 | Dark | Down | 53.0 | 51.4 | Up | 06:32:09 - 06:35:02 | -3239 |
| Cedarville | 06:33:35 | -44.7 | Dark | Down | 52.7 | 50.8 | Up | 06:32:08 - 06:35:01 | -3309 |
| Fall River/Burney | 06:33:37 | -44.5 | Dark | Down | 51.7 | 50.2 | Up | 06:32:11 - 06:35:04 | -3339 |
| Susanville | 06:33:36 | -45.4 | Dark | Down | 51.7 | 49.6 | Up | 06:32:09 - 06:35:02 | -3415 |
| Greenville | 06:33:36 | -45.4 | Dark | Down | 51.4 | 49.4 | Up | 06:32:10 - 06:35:03 | -3439 |
| Gimple | 06:33:36 | -45.5 | Dark | Down | 51.4 | 49.4 | Up | 06:32:10 - 06:35:03 | -3440 |
| Quincy | 06:33:36 | -45.6 | Dark | Down | 51.2 | 49.2 | Up | 06:32:10 - 06:35:03 | -3459 |
| Portola | 06:33:35 | -45.9 | Dark | Down | 51.4 | 49.1 | Up | 06:32:09 - 06:35:02 | -3480 |
| Reno | 06:33:34 | -46.4 | Dark | Down | 51.6 | 48.8 | Up | 06:32:08 - 06:35:01 | -3516 |
| Dunrhomin | 06:33:07 | -50.5 | Dark | Down | 60.5 | 47.9 | Up | 06:31:40 - 06:34:33 | -3518 |
| Carson City | 06:33:34 | -46.7 | Dark | Down | 51.4 | 48.5 | Up | 06:32:08 - 06:35:01 | -3553 |
| Gardnerville | 06:33:34 | -47.0 | Dark | Down | 51.3 | 48.2 | Up | 06:32:07 - 06:35:00 | -3578 |
| Yerington | 06:33:33 | -47.2 | Dark | Down | 51.6 | 48.3 | Up | 06:32:06 - 06:34:59 | -3582 |
| Hawthorne | 06:33:32 | -47.8 | Dark | Down | 51.6 | 47.8 | Up | 06:32:05 - 06:34:58 | -3636 |
| Lee Vining | 06:33:33 | -48.0 | Dark | Down | 51.0 | 47.3 | Up | 06:32:06 - 06:34:59 | -3686 |
| Tonopah | 06:33:29 | -48.8 | Dark | Down | 52.1 | 47.3 | Up | 06:32:02 - 06:34:55 | -3701 |
| Bishop | 06:33:31 | -48.9 | Dark | Down | 51.0 | 46.7 | Up | 06:32:05 - 06:34:58 | -3755 |
| Beatty | 06:33:28 | -50.0 | Dark | Down | 51.6 | 46.2 | Up | 06:32:02 - 06:34:55 | -3821 |
| Indian Springs | 06:33:26 | -50.7 | Dark | Down | 52.0 | 45.8 | Up | 06:31:59 - 06:34:52 | -3865 |
| Henderson | 06:33:24 | -51.4 | Dark | Down | 52.0 | 45.2 | Up | 06:31:58 - 06:34:51 | -3924 |
| CPSLO | 06:33:35 | -49.4 | Dark | Down | 48.2 | 45.2 | Up | 06:32:08 - 06:35:01 | -3925 |
| Patrick | 06:33:22 | -52.4 | Dark | Down | 52.2 | 44.5 | Up | 06:31:55 - 06:34:48 | -3995 |
| Laughlin/Bullhead City | 06:33:23 | -52.4 | Dark | Down | 51.6 | 44.4 | Up | 06:31:57 - 06:34:50 | -4014 |
| Kingman/Dolan Springs | 06:33:22 | -52.6 | Dark | Down | 51.9 | 44.3 | Up | 06:31:56 - 06:34:49 | -4016 |
| Mohave Valley | 06:33:23 | -52.6 | Dark | Down | 51.4 | 44.1 | Up | 06:31:57 - 06:34:50 | -4040 |
| Wildwood | 06:33:31 | -51.4 | Dark | Down | 48.6 | 44.0 | Up | 06:32:04 - 06:34:57 | -4074 |
| Lake Havasu City | 06:33:22 | -53.0 | Dark | Down | 51.3 | 43.7 | Up | 06:31:56 - 06:34:49 | -4082 |
| Parker | 06:33:22 | -53.4 | Dark | Down | 51.1 | 43.4 | Up | 06:31:56 - 06:34:49 | -4116 |
| Idyllwild | 06:33:27 | -52.6 | Dark | Down | 49.4 | 43.5 | Up | 06:32:00 - 06:34:53 | -4133 |
| Blythe | 06:33:23 | -53.7 | Dark | Down | 50.5 | 43.0 | Up | 06:31:56 - 06:34:49 | -4165 |
| George/Scottsdale | 06:33:17 | -54.7 | Dark | Down | 52.1 | 42.6 | Up | 06:31:51 - 06:34:44 | -4174 |
| Calipatria | 06:33:24 | -53.7 | Dark | Down | 49.6 | 42.8 | Up | 06:31:58 - 06:34:51 | -4204 |
| Yuma | 06:33:23 | -54.4 | Dark | Down | 49.8 | 42.3 | Up | 06:31:56 - 06:34:49 | -4254 |
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 468861, (2021/03/16 06:32UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 50.02 99 Mizar 13:23:55.8 +54:55:31 2.3 3.07 118 83 UMa 13:40:44.2 +54:40:54 4.7 0.64 118 PPM 034165 13:42:30.9 +55:43:40 7.7 1.25 117 PPM 034177 13:44:05.4 +54:30:07 9.2 0.14 118 468861 13:45:00.7 +54:31:33 15.6 118 Positions are for J2000
Event circumstances last updated at 2021/03/12 00:55:23 UT
Marc W. Buie, Southwest Research Institute