Event between (449097) 12UT68 and star UC4-625-026007 with event index number of 96776
Geocentric closest approach at 2017/12/28 06:32:14 UTC
J2000 position of star is 05:40:50.5 +34:49:45
Equinox of date position of star is 05:42:02.2 +34:50:14
Stellar brightness R=15.2,
use SENSEUP=128
Star is 58 degrees from the moon.
Moon is 70% illuminated.
TNO apparent brightness V=20.8
[RECON map]
TNO is 13.4 AU from the Sun
and 12.4 AU from the Earth.
The TNO is moving 20.7
km/sec on the sky relative to the star, or,
8.2 arcsec/hr.
The 1-sigma error in the time of the event is 93 seconds.
The 1-sigma cross-track error in the shadow position is
658 km.
The sky-plane scale is
9024.5 km/arcsec.
The TNO has an absolute magnitude Hv=9.6
Diameter=72.4 km assuming a 5% albedo -- 3.5 sec chord
Diameter=29.6 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
Star training set for 449097, (2017/12/28 06:32UT) Object RA Dec mag sep mel Aldebaran 04:36:57.3 +16:32:39 0.8 23.37 40 Alnath 05:27:25.8 +28:37:15 1.6 6.95 53 PPM 070537 05:34:50.0 +34:44:12 6.1 1.48 57 PPM 070662 05:40:04.7 +35:05:13 8.3 0.47 58 PPM 070719 05:42:41.2 +34:49:14 9.8 0.13 58 449097 05:42:02.5 +34:50:14 15.2 58 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 24.7 km
RECON observability=1.0 and success probability=0.9%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 06:32:50 | -59.2 | Dark | Up | 74.2 | 150.0 | Up | 06:24:37 - 06:41:02 | 3999 |
| Tonasket | 06:32:50 | -59.4 | Dark | Up | 74.4 | 149.6 | Up | 06:24:37 - 06:41:02 | 3974 |
| Okanogan | 06:32:51 | -59.6 | Dark | Up | 74.7 | 148.6 | Up | 06:24:38 - 06:41:03 | 3939 |
| Brewster | 06:32:52 | -59.7 | Dark | Up | 74.8 | 147.5 | Up | 06:24:39 - 06:41:04 | 3911 |
| Manson/Chelan | 06:32:53 | -59.6 | Dark | Up | 74.9 | 146.0 | Up | 06:24:40 - 06:41:05 | 3892 |
| Entiat | 06:32:53 | -59.8 | Dark | Up | 75.0 | 145.4 | Up | 06:24:41 - 06:41:06 | 3869 |
| Wenatchee | 06:32:54 | -59.9 | Dark | Up | 75.2 | 144.6 | Up | 06:24:42 - 06:41:07 | 3842 |
| Ellensburg | 06:32:55 | -60.1 | Dark | Up | 75.5 | 143.0 | Up | 06:24:43 - 06:41:08 | 3799 |
| Yakima | 06:32:55 | -60.4 | Dark | Up | 75.8 | 142.0 | Up | 06:24:43 - 06:41:08 | 3755 |
| Toppenish/White Swan | 06:32:55 | -60.6 | Dark | Up | 76.0 | 142.0 | Up | 06:24:43 - 06:41:08 | 3731 |
| Pasco | 06:32:50 | -61.3 | Dark | Up | 76.6 | 145.4 | Up | 06:24:38 - 06:41:03 | 3708 |
| PNWRO | 06:32:50 | -61.6 | Dark | Up | 76.9 | 145.6 | Up | 06:24:37 - 06:41:02 | 3679 |
| Goldendale | 06:32:57 | -60.8 | Dark | Up | 76.3 | 139.3 | Up | 06:24:44 - 06:41:09 | 3674 |
| George/Umatilla | 06:32:52 | -61.4 | Dark | Up | 76.8 | 143.9 | Up | 06:24:39 - 06:41:04 | 3673 |
| The Dalles | 06:32:58 | -60.7 | Dark | Up | 76.3 | 137.7 | Up | 06:24:46 - 06:41:11 | 3653 |
| Maupin | 06:32:58 | -61.1 | Dark | Up | 76.6 | 136.8 | Up | 06:24:46 - 06:41:11 | 3607 |
| Madras/Culver | 06:32:59 | -61.4 | Dark | Up | 77.0 | 135.1 | Up | 06:24:47 - 06:41:12 | 3548 |
| Sisters | 06:33:01 | -61.4 | Dark | Up | 77.0 | 132.8 | Up | 06:24:48 - 06:41:13 | 3515 |
| Redmond | 06:32:59 | -61.6 | Dark | Up | 77.2 | 133.8 | Up | 06:24:47 - 06:41:12 | 3509 |
| Bend | 06:33:00 | -61.7 | Dark | Up | 77.3 | 132.7 | Up | 06:24:47 - 06:41:12 | 3487 |
| Oregon Observatory | 06:33:01 | -61.7 | Dark | Up | 77.3 | 131.8 | Up | 06:24:48 - 06:41:13 | 3469 |
| La Pine/Gilchrist | 06:33:01 | -61.8 | Dark | Up | 77.4 | 130.9 | Up | 06:24:49 - 06:41:14 | 3448 |
| North Lake | 06:32:59 | -62.4 | Dark | Up | 78.1 | 131.1 | Up | 06:24:47 - 06:41:12 | 3395 |
| Paisley | 06:32:58 | -63.0 | Dark | Up | 78.6 | 130.2 | Up | 06:24:46 - 06:41:11 | 3331 |
| Chiloquin | 06:33:03 | -62.3 | Dark | Up | 77.9 | 126.0 | Up | 06:24:51 - 06:41:16 | 3330 |
| Klamath Falls | 06:33:03 | -62.5 | Dark | Up | 78.2 | 124.9 | Up | 06:24:50 - 06:41:15 | 3291 |
| Lakeview | 06:32:58 | -63.4 | Dark | Up | 79.0 | 128.8 | Up | 06:24:45 - 06:41:10 | 3274 |
| Tulelake | 06:33:02 | -62.9 | Dark | Up | 78.5 | 124.6 | Up | 06:24:50 - 06:41:15 | 3259 |
| Cedarville | 06:32:57 | -63.9 | Dark | Up | 79.6 | 126.6 | Up | 06:24:45 - 06:41:10 | 3201 |
| Fall River/Burney | 06:33:03 | -63.5 | Dark | Up | 79.1 | 121.0 | Up | 06:24:50 - 06:41:15 | 3159 |
| Susanville | 06:33:00 | -64.3 | Dark | Up | 79.9 | 120.1 | Up | 06:24:47 - 06:41:12 | 3083 |
| Greenville | 06:33:01 | -64.3 | Dark | Up | 79.8 | 117.9 | Up | 06:24:49 - 06:41:14 | 3055 |
| Gimple | 06:33:01 | -64.3 | Dark | Up | 79.9 | 118.1 | Up | 06:24:49 - 06:41:14 | 3054 |
| Quincy | 06:33:02 | -64.4 | Dark | Up | 79.9 | 116.9 | Up | 06:24:49 - 06:41:14 | 3033 |
| Portola | 06:32:59 | -64.7 | Dark | Up | 80.3 | 117.5 | Up | 06:24:47 - 06:41:12 | 3015 |
| Niwot | 06:31:57 | -72.0 | Dark | Up | 83.6 | 215.7 | Up | 06:23:45 - 06:40:10 | 3008 |
| Reno | 06:32:57 | -65.3 | Dark | Up | 80.8 | 117.9 | Up | 06:24:45 - 06:41:10 | 2980 |
| Carson City | 06:32:57 | -65.5 | Dark | Up | 81.0 | 116.0 | Up | 06:24:45 - 06:41:10 | 2940 |
| Yerington | 06:32:55 | -66.0 | Dark | Up | 81.5 | 116.6 | Up | 06:24:42 - 06:41:07 | 2913 |
| Gardnerville | 06:32:57 | -65.7 | Dark | Up | 81.2 | 114.7 | Up | 06:24:45 - 06:41:10 | 2913 |
| Hawthorne | 06:32:53 | -66.6 | Dark | Up | 82.1 | 115.3 | Up | 06:24:40 - 06:41:05 | 2858 |
| Lee Vining | 06:32:55 | -66.6 | Dark | Up | 82.0 | 110.2 | Up | 06:24:43 - 06:41:08 | 2800 |
| Tonopah | 06:32:47 | -67.8 | Dark | Up | 83.3 | 116.6 | Up | 06:24:35 - 06:41:00 | 2797 |
| Bishop | 06:32:52 | -67.4 | Dark | Up | 82.7 | 107.8 | Up | 06:24:40 - 06:41:05 | 2728 |
| Beatty | 06:32:46 | -68.7 | Dark | Up | 84.1 | 108.4 | Up | 06:24:33 - 06:40:58 | 2666 |
| Lone Pine | 06:32:51 | -68.1 | Dark | Up | 83.2 | 102.6 | Up | 06:24:39 - 06:41:04 | 2641 |
| Indian Springs | 06:32:41 | -69.6 | Dark | Up | 85.0 | 108.7 | Up | 06:24:29 - 06:40:54 | 2624 |
| Henderson | 06:32:38 | -70.4 | Dark | Up | 85.7 | 104.7 | Up | 06:24:26 - 06:40:51 | 2561 |
| CPSLO | 06:33:03 | -66.9 | Dark | Up | 81.2 | 90.0 | Up | 06:24:50 - 06:41:15 | 2520 |
| Searchlight/Boulder City | 06:32:38 | -70.8 | Dark | Up | 85.8 | 97.3 | Up | 06:24:26 - 06:40:51 | 2497 |
| Patrick | 06:32:34 | -71.5 | Dark | Up | 86.7 | 98.9 | Up | 06:24:21 - 06:40:46 | 2487 |
| Kingman/Dolan Springs | 06:32:35 | -71.5 | Dark | Up | 86.5 | 94.8 | Up | 06:24:22 - 06:40:47 | 2463 |
| Laughlin/Bullhead City | 06:32:37 | -71.2 | Dark | Up | 86.1 | 93.7 | Up | 06:24:25 - 06:40:50 | 2463 |
| DCO | 06:32:31 | -72.1 | Dark | Up | 87.3 | 94.9 | Up | 06:24:18 - 06:40:43 | 2451 |
| Mohave Valley | 06:32:37 | -71.3 | Dark | Up | 86.1 | 89.6 | Up | 06:24:25 - 06:40:50 | 2432 |
| Lake Havasu City | 06:32:36 | -71.7 | Dark | Up | 86.3 | 83.5 | Up | 06:24:24 - 06:40:49 | 2387 |
| Wildwood | 06:32:55 | -68.9 | Dark | Up | 82.8 | 81.7 | Up | 06:24:42 - 06:41:07 | 2368 |
| Parker | 06:32:36 | -71.9 | Dark | Up | 86.3 | 78.1 | Up | 06:24:24 - 06:40:49 | 2348 |
| Idyllwild | 06:32:47 | -70.4 | Dark | Up | 84.3 | 77.1 | Up | 06:24:34 - 06:40:59 | 2315 |
| Blythe | 06:32:37 | -72.0 | Dark | Up | 85.9 | 71.4 | Up | 06:24:25 - 06:40:50 | 2291 |
| Calipatria | 06:32:41 | -71.6 | Dark | Up | 85.0 | 68.4 | Up | 06:24:29 - 06:40:54 | 2241 |
| Yuma | 06:32:38 | -72.4 | Dark | Up | 85.5 | 60.3 | Up | 06:24:25 - 06:40:50 | 2189 |
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 449097, (2017/12/28 06:32UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 23.37 40 Alnath 05:26:17.5 +28:36:24 1.6 6.95 53 PPM 070537 05:33:38.2 +34:43:32 6.1 1.48 57 PPM 070662 05:38:52.5 +35:04:41 8.3 0.47 58 PPM 070719 05:41:29.2 +34:48:46 9.8 0.13 58 449097 05:40:50.5 +34:49:45 15.2 58 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:09:02 UT
Marc W. Buie, Southwest Research Institute