Event between (308634) 05XU100 and star GA0980:03595694 with event index number of 248182
Geocentric closest approach at 2020/02/29 07:37:06 UTC
J2000 position of star is 10:14:49.7 +08:44:48
Equinox of date position of star is 10:15:48.1 +08:39:16
Stellar brightness G=13.8,
use SENSEUP=64
Star is 110 degrees from the moon.
Moon is 27% illuminated.
TNO apparent brightness V=22.6
[RECON map]
TNO is 43.1 AU from the Sun
and 42.2 AU from the Earth.
The TNO is moving 25.4
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 155 seconds.
The 1-sigma cross-track error in the shadow position is
2717 km.
The sky-plane scale is
30576.0 km/arcsec.
The TNO has an absolute magnitude Hv=6.3
Diameter=331.1 km assuming a 5% albedo -- 13.0 sec chord
Diameter=135.2 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is CLASSICAL
Star training set for 308634, (2020/02/29 07:37UT) Object RA Dec mag sep mel Regulus 10:09:26.7 +11:52:04 1.3 3.59 108 31 Leo 10:08:58.4 +09:53:53 6.0 2.12 108 PPM 156653 10:16:01.5 +09:06:37 8.0 0.47 110 PPM 156641 10:15:32.0 +08:31:09 9.5 0.15 110 308634 10:15:53.5 +08:38:45 13.8 111 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 19.8 km
RECON observability=1.0 and success probability=9.9%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Penticton | 07:39:25 | -47.7 | Dark | Down | 49.2 | 180.3 | Up | 07:26:00 - 07:52:50 | 3804 |
| Oroville | 07:39:24 | -48.3 | Dark | Down | 49.8 | 180.4 | Up | 07:25:59 - 07:52:49 | 3759 |
| Tonasket | 07:39:23 | -48.5 | Dark | Down | 50.0 | 180.5 | Up | 07:25:58 - 07:52:48 | 3740 |
| Okanogan | 07:39:23 | -48.8 | Dark | Down | 50.4 | 180.2 | Up | 07:25:58 - 07:52:48 | 3710 |
| Brewster | 07:39:23 | -49.1 | Dark | Down | 50.7 | 179.9 | Up | 07:25:58 - 07:52:48 | 3683 |
| Manson/Chelan | 07:39:25 | -49.2 | Dark | Down | 50.9 | 179.3 | Up | 07:26:00 - 07:52:50 | 3657 |
| Entiat | 07:39:25 | -49.4 | Dark | Down | 51.1 | 179.2 | Up | 07:26:00 - 07:52:50 | 3637 |
| Wenatchee | 07:39:25 | -49.7 | Dark | Down | 51.3 | 179.1 | Up | 07:26:00 - 07:52:50 | 3613 |
| Ellensburg | 07:39:25 | -50.0 | Dark | Down | 51.7 | 178.7 | Up | 07:26:00 - 07:52:50 | 3574 |
| Pasco | 07:39:20 | -51.0 | Dark | Down | 52.5 | 181.0 | Up | 07:25:55 - 07:52:45 | 3549 |
| Yakima | 07:39:24 | -50.4 | Dark | Down | 52.2 | 178.7 | Up | 07:25:59 - 07:52:49 | 3540 |
| PNWRO | 07:39:19 | -51.2 | Dark | Down | 52.7 | 181.3 | Up | 07:25:54 - 07:52:44 | 3534 |
| Toppenish/White Swan | 07:39:23 | -50.7 | Dark | Down | 52.4 | 178.9 | Up | 07:25:58 - 07:52:48 | 3526 |
| George/Umatilla | 07:39:20 | -51.3 | Dark | Down | 52.8 | 180.6 | Up | 07:25:55 - 07:52:45 | 3515 |
| Goldendale | 07:39:24 | -51.1 | Dark | Down | 52.9 | 178.2 | Up | 07:25:59 - 07:52:49 | 3469 |
| The Dalles | 07:39:25 | -51.3 | Dark | Down | 53.1 | 177.6 | Up | 07:26:00 - 07:52:50 | 3440 |
| Niwot | 07:38:29 | -57.1 | Dark | Down | 56.1 | 206.1 | Up | 07:25:04 - 07:51:54 | 3436 |
| Maupin | 07:39:24 | -51.7 | Dark | Down | 53.6 | 177.8 | Up | 07:25:59 - 07:52:49 | 3408 |
| Madras/Culver | 07:39:23 | -52.2 | Dark | Down | 54.1 | 177.7 | Up | 07:25:58 - 07:52:48 | 3360 |
| Redmond | 07:39:23 | -52.6 | Dark | Down | 54.5 | 177.5 | Up | 07:25:58 - 07:52:48 | 3328 |
| Sisters | 07:39:24 | -52.5 | Dark | Down | 54.4 | 176.9 | Up | 07:25:59 - 07:52:49 | 3319 |
| Bend | 07:39:23 | -52.7 | Dark | Down | 54.7 | 177.3 | Up | 07:25:58 - 07:52:48 | 3306 |
| Oregon Observatory | 07:39:24 | -52.9 | Dark | Down | 54.8 | 177.1 | Up | 07:25:59 - 07:52:49 | 3287 |
| La Pine/Gilchrist | 07:39:23 | -53.1 | Dark | Down | 55.0 | 176.9 | Up | 07:25:58 - 07:52:48 | 3268 |
| North Lake | 07:39:22 | -53.6 | Dark | Down | 55.5 | 177.9 | Up | 07:25:57 - 07:52:47 | 3246 |
| Paisley | 07:39:20 | -54.2 | Dark | Down | 56.0 | 178.5 | Up | 07:25:55 - 07:52:45 | 3208 |
| Lakeview | 07:39:19 | -54.7 | Dark | Down | 56.6 | 178.9 | Up | 07:25:54 - 07:52:44 | 3169 |
| Chiloquin | 07:39:23 | -54.1 | Dark | Down | 56.1 | 176.2 | Up | 07:25:58 - 07:52:48 | 3161 |
| Klamath Falls | 07:39:23 | -54.4 | Dark | Down | 56.5 | 176.3 | Up | 07:25:58 - 07:52:48 | 3133 |
| Tulelake | 07:39:21 | -54.7 | Dark | Down | 56.8 | 176.8 | Up | 07:25:56 - 07:52:46 | 3118 |
| Cedarville | 07:39:17 | -55.4 | Dark | Down | 57.2 | 179.1 | Up | 07:25:52 - 07:52:42 | 3116 |
| Fall River/Burney | 07:39:21 | -55.6 | Dark | Down | 57.7 | 176.9 | Up | 07:25:56 - 07:52:46 | 3039 |
| Susanville | 07:39:17 | -56.4 | Dark | Down | 58.3 | 178.2 | Up | 07:25:52 - 07:52:42 | 3004 |
| Gimple | 07:39:18 | -56.6 | Dark | Down | 58.6 | 177.8 | Up | 07:25:53 - 07:52:43 | 2973 |
| Greenville | 07:39:18 | -56.6 | Dark | Down | 58.6 | 177.6 | Up | 07:25:53 - 07:52:43 | 2971 |
| Portola | 07:39:16 | -57.0 | Dark | Down | 58.9 | 178.5 | Up | 07:25:51 - 07:52:41 | 2955 |
| Quincy | 07:39:17 | -56.8 | Dark | Down | 58.8 | 177.6 | Up | 07:25:52 - 07:52:42 | 2953 |
| Reno | 07:39:14 | -57.4 | Dark | Down | 59.2 | 179.8 | Up | 07:25:49 - 07:52:39 | 2950 |
| Yerington | 07:39:11 | -58.0 | Dark | Down | 59.8 | 181.0 | Up | 07:25:46 - 07:52:36 | 2919 |
| Carson City | 07:39:13 | -57.7 | Dark | Down | 59.6 | 179.8 | Up | 07:25:48 - 07:52:38 | 2918 |
| Gardnerville | 07:39:13 | -58.0 | Dark | Down | 59.8 | 179.9 | Up | 07:25:48 - 07:52:38 | 2897 |
| Hawthorne | 07:39:08 | -58.6 | Dark | Down | 60.2 | 182.1 | Up | 07:25:43 - 07:52:33 | 2893 |
| Tonopah | 07:39:03 | -59.3 | Dark | Down | 60.6 | 184.9 | Up | 07:25:38 - 07:52:28 | 2892 |
| Lee Vining | 07:39:09 | -59.0 | Dark | Down | 60.8 | 181.1 | Up | 07:25:44 - 07:52:34 | 2827 |
| Indian Springs | 07:38:56 | -60.9 | Dark | Down | 61.9 | 188.3 | Up | 07:25:31 - 07:52:21 | 2804 |
| Beatty | 07:39:01 | -60.5 | Dark | Down | 61.7 | 186.0 | Up | 07:25:36 - 07:52:26 | 2801 |
| Bishop | 07:39:07 | -59.8 | Dark | Down | 61.4 | 182.6 | Up | 07:25:42 - 07:52:32 | 2794 |
| Henderson | 07:38:54 | -61.5 | Dark | Down | 62.4 | 189.9 | Up | 07:25:29 - 07:52:19 | 2777 |
| Patrick | 07:38:49 | -62.3 | Dark | Down | 62.8 | 192.5 | Up | 07:25:24 - 07:52:14 | 2755 |
| DCO | 07:38:45 | -62.6 | Dark | Down | 63.0 | 194.1 | Up | 07:25:20 - 07:52:10 | 2750 |
| Lone Pine | 07:39:05 | -60.6 | Dark | Down | 62.1 | 183.4 | Up | 07:25:40 - 07:52:30 | 2734 |
| Kingman/Dolan Springs | 07:38:49 | -62.5 | Dark | Down | 63.1 | 192.2 | Up | 07:25:24 - 07:52:14 | 2729 |
| Searchlight/Boulder City | 07:38:53 | -62.1 | Dark | Down | 62.9 | 190.2 | Up | 07:25:28 - 07:52:18 | 2727 |
| Laughlin/Bullhead City | 07:38:50 | -62.4 | Dark | Down | 63.2 | 191.1 | Up | 07:25:25 - 07:52:15 | 2710 |
| Mohave Valley | 07:38:50 | -62.7 | Dark | Down | 63.4 | 191.2 | Up | 07:25:25 - 07:52:15 | 2685 |
| Lake Havasu City | 07:38:49 | -63.1 | Dark | Down | 63.8 | 191.9 | Up | 07:25:24 - 07:52:14 | 2656 |
| Parker | 07:38:48 | -63.5 | Dark | Down | 64.1 | 192.1 | Up | 07:25:23 - 07:52:13 | 2625 |
| Blythe | 07:38:49 | -64.0 | Dark | Down | 64.7 | 191.6 | Up | 07:25:24 - 07:52:14 | 2566 |
| CPSLO | 07:39:11 | -61.2 | Dark | Down | 63.4 | 177.8 | Up | 07:25:46 - 07:52:36 | 2535 |
| Idyllwild | 07:38:56 | -63.6 | Dark | Down | 64.9 | 186.8 | Up | 07:25:31 - 07:52:21 | 2510 |
| Calipatria | 07:38:51 | -64.4 | Dark | Down | 65.3 | 189.7 | Up | 07:25:26 - 07:52:16 | 2490 |
| Wildwood | 07:39:03 | -62.9 | Dark | Down | 64.6 | 182.4 | Up | 07:25:38 - 07:52:28 | 2484 |
| Yuma | 07:38:47 | -64.9 | Dark | Down | 65.6 | 191.9 | Up | 07:25:22 - 07:52:12 | 2479 |
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 308634, (2020/02/29 07:37UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 3.59 108 31 Leo 10:07:54.2 +09:59:50 6.0 2.12 108 PPM 156653 10:14:57.5 +09:12:40 8.0 0.47 110 PPM 156641 10:14:28.2 +08:37:11 9.5 0.15 110 308634 10:14:49.7 +08:44:48 13.8 110 Positions are for J2000
Event circumstances last updated at 2018/06/12 19:55:01 UT
Marc W. Buie, Southwest Research Institute