Event between (500828) 13GR136 and star GA0740:05264329 with event index number of 242855
Geocentric closest approach at 2020/01/12 13:41:54 UTC
J2000 position of star is 14:45:52.8 -15:19:58
Equinox of date position of star is 14:46:54.1 -15:24:35
Stellar brightness G=14.8,
use SENSEUP=128
Star is 89 degrees from the moon.
Moon is 96% illuminated.
TNO apparent brightness V=24.1
[RECON map]
TNO is 40.8 AU from the Sun
and 41.1 AU from the Earth.
The TNO is moving 16.3
km/sec on the sky relative to the star, or,
2.0 arcsec/hr.
The 1-sigma error in the time of the event is 359 seconds.
The 1-sigma cross-track error in the shadow position is
2215 km.
The sky-plane scale is
29816.6 km/arcsec.
The TNO has an absolute magnitude Hv=7.8
Diameter=166.0 km assuming a 5% albedo -- 10.2 sec chord
Diameter=67.8 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is 7:4EEE
Star training set for 500828, (2020/01/12 13:42UT) Object RA Dec mag sep mel Spica 13:26:15.1 -11:15:55 1.0 20.06 69 27Bet Lib 15:18:05.3 -09:27:20 2.6 9.65 94 5 Lib 14:47:04.2 -15:32:34 6.5 0.13 89 500828 14:46:59.3 -15:24:59 14.8 89 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
2.5 sigma about the mid-time.
The median site spacing is 15.4 km
RECON observability=0.8 and success probability=6.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Penticton | 13:41:39 | -20.2 | Dark | Up | 21.7 | 154.9 | Low | 13:26:39 - 13:56:39 | -2919 |
| Oroville | 13:41:38 | -20.1 | Dark | Up | 22.3 | 154.9 | Low | 13:26:38 - 13:56:38 | -2950 |
| Tonasket | 13:41:38 | -20.0 | Dark | Up | 22.5 | 154.9 | Low | 13:26:38 - 13:56:38 | -2964 |
| Okanogan | 13:41:37 | -20.0 | Dark | Up | 22.8 | 154.7 | Low | 13:26:37 - 13:56:37 | -2987 |
| Brewster | 13:41:36 | -20.1 | Dark | Up | 23.0 | 154.4 | Low | 13:26:36 - 13:56:36 | -3009 |
| Manson/Chelan | 13:41:35 | -20.3 | Dark | Up | 23.0 | 154.0 | Low | 13:26:35 - 13:56:35 | -3031 |
| Entiat | 13:41:35 | -20.3 | Dark | Up | 23.2 | 153.9 | Low | 13:26:35 - 13:56:35 | -3046 |
| Wenatchee | 13:41:33 | -20.4 | Dark | Up | 23.4 | 153.8 | Low | 13:26:33 - 13:56:33 | -3064 |
| Ellensburg | 13:41:32 | -20.5 | Dark | Up | 23.7 | 153.4 | Low | 13:26:32 - 13:56:32 | -3095 |
| Pasco | 13:41:37 | -19.3 | Dark | Up | 24.8 | 154.8 | Low | 13:26:37 - 13:56:37 | -3102 |
| Niwot | 13:42:38 | -7.7 | CT | Up | 33.9 | 169.0 | Up | 13:27:38 - 13:57:38 | -3103 |
| PNWRO | 13:41:38 | -19.1 | Dark | Up | 25.1 | 154.9 | Low | 13:26:38 - 13:56:38 | -3111 |
| Yakima | 13:41:31 | -20.4 | Dark | Up | 24.1 | 153.3 | Low | 13:26:31 - 13:56:31 | -3121 |
| George/Umatilla | 13:41:36 | -19.4 | Dark | Up | 25.1 | 154.5 | Low | 13:26:36 - 13:56:36 | -3128 |
| Toppenish/White Swan | 13:41:32 | -20.2 | Dark | Up | 24.3 | 153.5 | Low | 13:26:32 - 13:56:32 | -3129 |
| Goldendale | 13:41:29 | -20.4 | Dark | Up | 24.7 | 152.9 | Low | 13:26:29 - 13:56:29 | -3176 |
| The Dalles | 13:41:28 | -20.6 | Dark | Up | 24.8 | 152.5 | Low | 13:26:28 - 13:56:28 | -3200 |
| Maupin | 13:41:28 | -20.5 | Dark | Up | 25.2 | 152.5 | Low | 13:26:28 - 13:56:28 | -3224 |
| Madras/Culver | 13:41:27 | -20.4 | Dark | Up | 25.6 | 152.4 | Low | 13:26:27 - 13:56:27 | -3260 |
| Redmond | 13:41:26 | -20.4 | Dark | Up | 25.9 | 152.2 | Low | 13:26:26 - 13:56:26 | -3285 |
| Sisters | 13:41:25 | -20.7 | Dark | Up | 25.8 | 151.8 | Low | 13:26:25 - 13:56:25 | -3295 |
| Bend | 13:41:25 | -20.5 | Dark | Up | 26.1 | 152.0 | Low | 13:26:25 - 13:56:25 | -3303 |
| Oregon Observatory | 13:41:25 | -20.5 | Dark | Up | 26.2 | 151.9 | Low | 13:26:25 - 13:56:25 | -3319 |
| La Pine/Gilchrist | 13:41:26 | -20.5 | Dark | Up | 26.3 | 151.7 | Low | 13:26:26 - 13:56:26 | -3334 |
| North Lake | 13:41:26 | -20.0 | Dark | Up | 26.9 | 152.3 | Low | 13:26:26 - 13:56:26 | -3345 |
| Paisley | 13:41:28 | -19.6 | Dark | Up | 27.5 | 152.5 | Low | 13:26:28 - 13:56:28 | -3371 |
| Lakeview | 13:41:28 | -19.4 | Dark | Up | 28.1 | 152.6 | Low | 13:26:28 - 13:56:28 | -3400 |
| Chiloquin | 13:41:21 | -20.6 | Dark | Up | 27.2 | 151.1 | Low | 13:26:21 - 13:56:21 | -3419 |
| Cedarville | 13:41:28 | -19.1 | Dark | Up | 28.7 | 152.6 | Low | 13:26:28 - 13:56:28 | -3439 |
| Klamath Falls | 13:41:22 | -20.5 | Dark | Up | 27.5 | 151.1 | Low | 13:26:22 - 13:56:22 | -3440 |
| Tulelake | 13:41:23 | -20.2 | Dark | Up | 27.9 | 151.3 | Low | 13:26:23 - 13:56:23 | -3449 |
| Fall River/Burney | 13:41:22 | -19.9 | Dark | Up | 28.7 | 151.2 | Low | 13:26:22 - 13:56:22 | -3510 |
| Susanville | 13:41:25 | -19.2 | Dark | Up | 29.5 | 151.8 | Low | 13:26:25 - 13:56:25 | -3532 |
| Gimple | 13:41:25 | -19.3 | Dark | Up | 29.7 | 151.5 | Low | 13:26:25 - 13:56:25 | -3558 |
| Greenville | 13:41:24 | -19.4 | Dark | Up | 29.7 | 151.4 | Low | 13:26:24 - 13:56:24 | -3560 |
| Reno | 13:41:28 | -18.4 | Dark | Up | 30.6 | 152.4 | Up | 13:26:28 - 13:56:28 | -3567 |
| Portola | 13:41:26 | -19.0 | Dark | Up | 30.1 | 151.8 | Up | 13:26:26 - 13:56:26 | -3568 |
| Quincy | 13:41:24 | -19.4 | Dark | Up | 29.8 | 151.4 | Low | 13:26:24 - 13:56:24 | -3574 |
| Yerington | 13:41:32 | -17.8 | AT | Up | 31.3 | 153.0 | Up | 13:26:32 - 13:56:32 | -3586 |
| Carson City | 13:41:28 | -18.3 | Dark | Up | 30.9 | 152.4 | Up | 13:26:28 - 13:56:28 | -3592 |
| Tonopah | 13:41:39 | -16.1 | AT | Up | 32.8 | 154.8 | Up | 13:26:39 - 13:56:39 | -3593 |
| Hawthorne | 13:41:35 | -17.3 | AT | Up | 31.9 | 153.4 | Up | 13:26:35 - 13:56:35 | -3603 |
| Gardnerville | 13:41:28 | -18.2 | Dark | Up | 31.2 | 152.3 | Up | 13:26:28 - 13:56:28 | -3608 |
| Indian Springs | 13:41:47 | -14.4 | AT | Up | 34.7 | 156.1 | Up | 13:26:47 - 13:56:47 | -3653 |
| Lee Vining | 13:41:30 | -17.5 | AT | Up | 32.3 | 152.7 | Up | 13:26:30 - 13:56:30 | -3659 |
| Beatty | 13:41:41 | -15.4 | AT | Up | 34.0 | 155.0 | Up | 13:26:41 - 13:56:41 | -3662 |
| Henderson | 13:41:50 | -13.7 | AT | Up | 35.4 | 156.8 | Up | 13:26:50 - 13:56:50 | -3670 |
| Bishop | 13:41:35 | -16.8 | AT | Up | 33.1 | 153.3 | Up | 13:26:35 - 13:56:35 | -3680 |
| Patrick | 13:41:55 | -12.7 | AT | Up | 36.4 | 157.9 | Up | 13:26:55 - 13:56:55 | -3681 |
| DCO | 13:41:58 | -12.0 | AT | Up | 36.9 | 158.6 | Up | 13:26:58 - 13:56:58 | -3682 |
| Kingman/Dolan Springs | 13:41:54 | -12.8 | AT | Up | 36.5 | 157.6 | Up | 13:26:54 - 13:56:54 | -3703 |
| Searchlight/Boulder City | 13:41:50 | -13.5 | AT | Up | 36.0 | 156.7 | Up | 13:26:50 - 13:56:50 | -3710 |
| Laughlin/Bullhead City | 13:41:52 | -13.2 | AT | Up | 36.4 | 157.0 | Up | 13:26:52 - 13:56:52 | -3722 |
| Lone Pine | 13:41:35 | -16.3 | AT | Up | 33.9 | 153.5 | Up | 13:26:35 - 13:56:35 | -3726 |
| Mohave Valley | 13:41:51 | -13.1 | AT | Up | 36.6 | 156.9 | Up | 13:26:51 - 13:56:51 | -3742 |
| Lake Havasu City | 13:41:54 | -12.8 | AT | Up | 37.1 | 157.1 | Up | 13:26:54 - 13:56:54 | -3764 |
| Parker | 13:41:54 | -12.6 | AT | Up | 37.4 | 157.0 | Up | 13:26:54 - 13:56:54 | -3789 |
| Blythe | 13:41:52 | -12.7 | AT | Up | 37.8 | 156.5 | Up | 13:26:52 - 13:56:52 | -3839 |
| Idyllwild | 13:41:41 | -14.5 | AT | Up | 36.9 | 154.1 | Up | 13:26:41 - 13:56:41 | -3899 |
| Calipatria | 13:41:49 | -13.3 | AT | Up | 37.9 | 155.3 | Up | 13:26:49 - 13:56:49 | -3907 |
| CPSLO | 13:41:22 | -18.1 | Dark | Up | 34.0 | 150.2 | Up | 13:26:22 - 13:56:22 | -3908 |
| Yuma | 13:41:52 | -12.5 | AT | Up | 38.6 | 156.2 | Up | 13:26:52 - 13:56:52 | -3911 |
| Wildwood | 13:41:32 | -16.1 | AT | Up | 35.9 | 152.1 | Up | 13:26:32 - 13:56:32 | -3933 |
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 500828, (2020/01/12 13:42UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 20.06 69 27Bet Lib 15:17:00.3 -09:22:59 2.6 9.65 94 5 Lib 14:45:57.7 -15:27:34 6.5 0.13 89 500828 14:45:52.8 -15:19:58 14.8 88 Positions are for J2000
Event circumstances last updated at 2018/06/12 19:50:20 UT
Marc W. Buie, Southwest Research Institute