Event between (330836) Orius and star UC4-271-157214 with event index number of 68167
Geocentric closest approach at 2017/05/26 09:28:47 UTC
J2000 position of star is 18:13:22.9 -35:57:50
Equinox of date position of star is 18:14:33.1 -35:57:29
Stellar brightness R=13.8,
use SENSEUP=64
Star is 154 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=22.2
[RECON map]
TNO is 16.7 AU from the Sun
and 15.8 AU from the Earth.
The TNO is moving 19.2
km/sec on the sky relative to the star, or,
6.0 arcsec/hr.
The 1-sigma error in the time of the event is 506 seconds.
The 1-sigma cross-track error in the shadow position is
2957 km.
The sky-plane scale is
11446.7 km/arcsec.
The TNO has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 3.3 sec chord
Diameter=25.8 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
Star training set for 330836, (2017/05/26 09:29UT) Object RA Dec mag sep mel Antares 16:30:28.6 -26:28:09 0.9 24.09 170 Kap Sco 17:43:41.6 -39:02:14 2.4 6.85 156 Eta Sgr 18:18:48.3 -36:45:17 3.1 1.17 153 PPM 297392 18:13:53.0 -36:28:27 8.5 0.53 154 PPM 297433 18:15:27.0 -36:08:20 9.2 0.26 154 330836 18:14:33.3 -35:57:28 13.8 154 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
1.8 sigma about the mid-time.
The median site spacing is 33.9 km
RECON observability=0.1 and success probability=0.6%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Manson/Chelan | 09:27:48 | -18.0 | Dark | Down | 5.9 | 174.0 | Really Low | 09:12:48 - 09:42:48 | 3916 |
| Entiat | 09:27:48 | -18.2 | Dark | Down | 6.1 | 173.9 | Really Low | 09:12:48 - 09:42:48 | 3915 |
| Oroville | 09:27:45 | -16.9 | AT | Down | 4.9 | 174.6 | Really Low | 09:12:45 - 09:42:45 | 3915 |
| Wenatchee | 09:27:49 | -18.5 | Dark | Down | 6.4 | 173.8 | Really Low | 09:12:49 - 09:42:49 | 3914 |
| Ellensburg | 09:27:49 | -18.9 | Dark | Down | 6.7 | 173.7 | Really Low | 09:12:49 - 09:42:49 | 3913 |
| Brewster | 09:27:46 | -17.7 | AT | Down | 5.7 | 174.3 | Really Low | 09:12:46 - 09:42:46 | 3913 |
| Tonasket | 09:27:45 | -17.1 | AT | Down | 5.1 | 174.6 | Really Low | 09:12:45 - 09:42:45 | 3913 |
| Okanogan | 09:27:46 | -17.4 | AT | Down | 5.5 | 174.4 | Really Low | 09:12:46 - 09:42:46 | 3912 |
| Yakima | 09:27:50 | -19.3 | Dark | Down | 7.1 | 173.6 | Really Low | 09:12:50 - 09:42:50 | 3909 |
| The Dalles | 09:27:53 | -20.4 | Dark | Down | 8.1 | 173.1 | Really Low | 09:12:53 - 09:42:53 | 3905 |
| Toppenish/White Swan | 09:27:49 | -19.5 | Dark | Down | 7.4 | 173.8 | Really Low | 09:12:49 - 09:42:49 | 3904 |
| Goldendale | 09:27:51 | -20.1 | Dark | Down | 7.9 | 173.4 | Really Low | 09:12:51 - 09:42:51 | 3904 |
| Maupin | 09:27:53 | -20.8 | Dark | Down | 8.5 | 173.2 | Really Low | 09:12:53 - 09:42:53 | 3899 |
| Sisters | 09:27:55 | -21.7 | Dark | Down | 9.3 | 172.8 | Really Low | 09:12:55 - 09:42:55 | 3893 |
| Madras/Culver | 09:27:54 | -21.3 | Dark | Down | 9.1 | 173.2 | Really Low | 09:12:54 - 09:42:54 | 3892 |
| Redmond | 09:27:53 | -21.6 | Dark | Down | 9.4 | 173.1 | Really Low | 09:12:53 - 09:42:53 | 3887 |
| Bend | 09:27:54 | -21.9 | Dark | Down | 9.6 | 173.0 | Really Low | 09:12:54 - 09:42:54 | 3886 |
| Oregon Observatory | 09:27:55 | -22.1 | Dark | Down | 9.8 | 172.9 | Really Low | 09:12:55 - 09:42:55 | 3885 |
| Pasco | 09:27:45 | -19.3 | Dark | Down | 7.6 | 174.8 | Really Low | 09:12:45 - 09:42:45 | 3883 |
| La Pine/Gilchrist | 09:27:56 | -22.3 | Dark | Down | 10.0 | 172.8 | Really Low | 09:12:56 - 09:42:56 | 3883 |
| George/Umatilla | 09:27:46 | -19.6 | Dark | Down | 7.9 | 174.6 | Really Low | 09:12:46 - 09:42:46 | 3882 |
| PNWRO | 09:27:44 | -19.4 | Dark | Down | 7.8 | 175.0 | Really Low | 09:12:44 - 09:42:44 | 3877 |
| Chiloquin | 09:27:58 | -23.4 | Dark | Down | 11.0 | 172.5 | Really Low | 09:12:58 - 09:42:58 | 3868 |
| North Lake | 09:27:54 | -22.5 | Dark | Down | 10.4 | 173.3 | Really Low | 09:12:54 - 09:42:54 | 3866 |
| Klamath Falls | 09:27:58 | -23.7 | Dark | Down | 11.4 | 172.6 | Really Low | 09:12:58 - 09:42:58 | 3860 |
| Paisley | 09:27:52 | -22.9 | Dark | Down | 11.0 | 173.6 | Really Low | 09:12:52 - 09:42:52 | 3851 |
| Tulelake | 09:27:57 | -23.9 | Dark | Down | 11.7 | 172.8 | Really Low | 09:12:57 - 09:42:57 | 3851 |
| Lakeview | 09:27:52 | -23.3 | Dark | Down | 11.5 | 173.7 | Really Low | 09:12:52 - 09:42:52 | 3838 |
| Fall River/Burney | 09:27:58 | -24.7 | Dark | Down | 12.6 | 172.9 | Really Low | 09:12:58 - 09:42:58 | 3830 |
| Cedarville | 09:27:52 | -23.9 | Dark | Down | 12.2 | 173.9 | Really Low | 09:12:52 - 09:42:52 | 3822 |
| Susanville | 09:27:55 | -25.1 | Dark | Down | 13.3 | 173.5 | Really Low | 09:12:55 - 09:42:55 | 3805 |
| Greenville | 09:27:56 | -25.4 | Dark | Down | 13.5 | 173.2 | Really Low | 09:12:56 - 09:42:56 | 3803 |
| Gimple | 09:27:56 | -25.4 | Dark | Down | 13.5 | 173.3 | Really Low | 09:12:56 - 09:42:56 | 3802 |
| Quincy | 09:27:57 | -25.6 | Dark | Down | 13.7 | 173.2 | Really Low | 09:12:57 - 09:42:57 | 3798 |
| Portola | 09:27:54 | -25.6 | Dark | Down | 13.9 | 173.6 | Really Low | 09:12:54 - 09:42:54 | 3788 |
| Reno | 09:27:52 | -25.6 | Dark | Down | 14.2 | 174.1 | Really Low | 09:12:52 - 09:42:52 | 3771 |
| Carson City | 09:27:52 | -25.9 | Dark | Down | 14.6 | 174.1 | Really Low | 09:12:52 - 09:42:52 | 3761 |
| Gardnerville | 09:27:53 | -26.1 | Dark | Down | 14.8 | 174.2 | Really Low | 09:12:53 - 09:42:53 | 3754 |
| Yerington | 09:27:50 | -25.9 | Dark | Down | 14.8 | 174.6 | Really Low | 09:12:50 - 09:42:50 | 3745 |
| Hawthorne | 09:27:49 | -26.2 | Dark | Down | 15.3 | 175.1 | Really Low | 09:12:49 - 09:42:49 | 3724 |
| Lee Vining | 09:27:50 | -26.8 | Dark | Down | 15.8 | 174.7 | Really Low | 09:12:50 - 09:42:50 | 3718 |
| Bishop | 09:27:48 | -27.1 | Dark | Down | 16.5 | 175.2 | Really Low | 09:12:48 - 09:42:48 | 3687 |
| Tonopah | 09:27:42 | -26.1 | Dark | Down | 15.9 | 176.2 | Really Low | 09:12:42 - 09:42:42 | 3685 |
| CPSLO | 09:28:00 | -29.8 | Dark | Down | 18.4 | 173.3 | Really Low | 09:13:00 - 09:43:00 | 3662 |
| Lone Pine | 09:27:47 | -27.7 | Dark | Down | 17.3 | 175.5 | Really Low | 09:12:47 - 09:42:47 | 3658 |
| Beatty | 09:27:41 | -27.0 | Dark | Down | 17.0 | 176.6 | Really Low | 09:12:41 - 09:42:41 | 3641 |
| Indian Springs | 09:27:37 | -26.9 | Dark | Down | 17.4 | 177.5 | Really Low | 09:12:37 - 09:42:37 | 3609 |
| Wildwood | 09:27:51 | -30.1 | Dark | Down | 19.7 | 175.0 | Really Low | 09:12:51 - 09:42:51 | 3585 |
| Henderson | 09:27:34 | -27.1 | Dark | Down | 18.0 | 178.1 | Really Low | 09:12:34 - 09:42:34 | 3577 |
| Searchlight/Boulder City | 09:27:35 | -27.6 | Dark | Down | 18.5 | 178.1 | Really Low | 09:12:35 - 09:42:35 | 3557 |
| Laughlin/Bullhead City | 09:27:33 | -27.7 | Dark | Down | 18.8 | 178.4 | Really Low | 09:12:33 - 09:42:33 | 3538 |
| Idyllwild | 09:27:44 | -29.8 | Dark | Down | 20.2 | 176.6 | Low | 09:12:44 - 09:42:44 | 3536 |
| Patrick | 09:27:30 | -27.2 | Dark | Down | 18.6 | 179.0 | Really Low | 09:12:30 - 09:42:30 | 3531 |
| Mohave Valley | 09:27:33 | -27.9 | Dark | Down | 19.1 | 178.4 | Really Low | 09:12:33 - 09:42:33 | 3529 |
| Kingman/Dolan Springs | 09:27:31 | -27.5 | Dark | Down | 18.8 | 178.8 | Really Low | 09:12:31 - 09:42:31 | 3528 |
| Lake Havasu City | 09:27:32 | -28.2 | Dark | Down | 19.5 | 178.6 | Really Low | 09:12:32 - 09:42:32 | 3509 |
| DCO | 09:27:26 | -27.2 | Dark | Down | 18.9 | 179.6 | Really Low | 09:12:26 - 09:42:26 | 3505 |
| Parker | 09:27:32 | -28.4 | Dark | Down | 19.9 | 178.6 | Really Low | 09:12:32 - 09:42:32 | 3496 |
| Calipatria | 09:27:38 | -29.8 | Dark | Down | 20.9 | 177.6 | Low | 09:12:38 - 09:42:38 | 3486 |
| Blythe | 09:27:34 | -29.0 | Dark | Down | 20.4 | 178.4 | Low | 09:12:34 - 09:42:34 | 3484 |
| Niwot | 09:26:51 | -19.5 | Dark | Down | 13.6 | 186.1 | Really Low | 09:11:51 - 09:41:51 | 3454 |
| Yuma | 09:27:35 | -29.8 | Dark | Down | 21.3 | 178.3 | Low | 09:12:35 - 09:42:35 | 3450 |
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 330836, (2017/05/26 09:29UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 24.09 170 Kap Sco 17:42:29.3 -39:01:49 2.4 6.85 156 Eta Sgr 18:17:37.5 -36:45:45 3.1 1.17 153 PPM 297392 18:12:42.3 -36:28:47 8.5 0.53 154 PPM 297433 18:14:16.6 -36:08:42 9.2 0.26 154 330836 18:13:22.9 -35:57:50 13.8 154 Positions are for J2000
Event circumstances last updated at 2017/05/16 18:27:13 UT
Marc W. Buie, Southwest Research Institute