Event between (470027) 06RC103 and star UC4-501-147768 with event index number of 147230
Geocentric closest approach at 2017/10/24 07:57:36 UTC
J2000 position of star is 23:23:24.3 +10:03:37
Equinox of date position of star is 23:24:14.9 +10:09:07
Stellar brightness R=12.9
Star is 93 degrees from the moon.
Moon is 19% illuminated.
TNO apparent brightness V=21.6
[RECON map]
TNO is 37.0 AU from the Sun
and 36.2 AU from the Earth.
The TNO is moving 19.4
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 91 seconds.
The 1-sigma cross-track error in the shadow position is
1702 km.
The sky-plane scale is
26241.5 km/arcsec.
The TNO has an absolute magnitude Hv=5.9
Diameter=398.1 km assuming a 5% albedo -- 20.6 sec chord
Diameter=162.5 km assuming a 30% albedo -- 8.4 sec chord
Dynamical classification is SCATEXTD
Star training set for 470027, (2017/10/24 07:58UT) Object RA Dec mag sep mel Markab 23:05:39.0 +15:18:05 2.5 6.87 90 66 Peg 23:23:58.5 +12:24:43 6.3 2.26 93 PPM 174117 23:29:26.1 +09:31:32 7.7 1.41 94 PPM 142493 23:25:43.9 +10:37:11 9.5 0.58 93 PPM 142463 23:24:08.3 +10:09:43 11.0 0.04 93 470027 23:24:18.4 +10:09:29 12.9 93 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 23.3 km
RECON observability=1.0 and success probability=6.6%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 07:53:43 | -52.8 | Dark | Down | 38.3 | 235.5 | Up | 07:45:37 - 08:01:48 | 5147 |
| Tonasket | 07:53:44 | -53.1 | Dark | Down | 38.4 | 235.6 | Up | 07:45:38 - 08:01:49 | 5123 |
| Okanogan | 07:53:43 | -53.4 | Dark | Down | 38.7 | 235.7 | Up | 07:45:38 - 08:01:49 | 5093 |
| Brewster | 07:53:45 | -53.7 | Dark | Down | 38.9 | 235.7 | Up | 07:45:39 - 08:01:50 | 5071 |
| Manson/Chelan | 07:53:45 | -53.9 | Dark | Down | 39.3 | 235.4 | Up | 07:45:40 - 08:01:51 | 5058 |
| Entiat | 07:53:45 | -54.1 | Dark | Down | 39.4 | 235.5 | Up | 07:45:39 - 08:01:50 | 5038 |
| Wenatchee | 07:53:46 | -54.4 | Dark | Down | 39.6 | 235.6 | Up | 07:45:40 - 08:01:51 | 5014 |
| Ellensburg | 07:53:46 | -54.8 | Dark | Down | 40.0 | 235.6 | Up | 07:45:40 - 08:01:51 | 4978 |
| Yakima | 07:53:46 | -55.2 | Dark | Down | 40.2 | 235.9 | Up | 07:45:40 - 08:01:51 | 4938 |
| Toppenish/White Swan | 07:53:46 | -55.4 | Dark | Down | 40.2 | 236.2 | Up | 07:45:41 - 08:01:52 | 4912 |
| Pasco | 07:53:42 | -55.5 | Dark | Down | 39.6 | 237.6 | Up | 07:45:37 - 08:01:48 | 4870 |
| Goldendale | 07:53:47 | -56.0 | Dark | Down | 40.8 | 236.2 | Up | 07:45:41 - 08:01:52 | 4867 |
| The Dalles | 07:53:48 | -56.2 | Dark | Down | 41.1 | 235.9 | Up | 07:45:43 - 08:01:54 | 4853 |
| George/Umatilla | 07:53:43 | -55.8 | Dark | Down | 39.9 | 237.6 | Up | 07:45:37 - 08:01:48 | 4841 |
| PNWRO | 07:53:41 | -55.7 | Dark | Down | 39.6 | 238.0 | Up | 07:45:36 - 08:01:47 | 4840 |
| Maupin | 07:53:48 | -56.7 | Dark | Down | 41.3 | 236.3 | Up | 07:45:42 - 08:01:53 | 4808 |
| Madras/Culver | 07:53:48 | -57.2 | Dark | Down | 41.6 | 236.7 | Up | 07:45:43 - 08:01:54 | 4754 |
| Sisters | 07:53:49 | -57.5 | Dark | Down | 42.1 | 236.5 | Up | 07:45:44 - 08:01:55 | 4731 |
| Redmond | 07:53:48 | -57.6 | Dark | Down | 41.9 | 236.9 | Up | 07:45:43 - 08:01:54 | 4719 |
| Bend | 07:53:49 | -57.8 | Dark | Down | 42.1 | 236.9 | Up | 07:45:44 - 08:01:55 | 4701 |
| Oregon Observatory | 07:53:50 | -58.0 | Dark | Down | 42.2 | 236.9 | Up | 07:45:44 - 08:01:55 | 4686 |
| La Pine/Gilchrist | 07:53:49 | -58.2 | Dark | Down | 42.4 | 237.0 | Up | 07:45:44 - 08:01:55 | 4667 |
| North Lake | 07:53:48 | -58.6 | Dark | Down | 42.2 | 238.0 | Up | 07:45:42 - 08:01:53 | 4607 |
| Chiloquin | 07:53:51 | -59.3 | Dark | Down | 43.2 | 237.5 | Up | 07:45:45 - 08:01:56 | 4563 |
| Paisley | 07:53:47 | -59.1 | Dark | Down | 42.3 | 238.8 | Up | 07:45:42 - 08:01:53 | 4542 |
| Klamath Falls | 07:53:51 | -59.6 | Dark | Down | 43.3 | 237.9 | Up | 07:45:45 - 08:01:56 | 4526 |
| Tulelake | 07:53:50 | -59.9 | Dark | Down | 43.3 | 238.4 | Up | 07:45:45 - 08:01:56 | 4490 |
| Lakeview | 07:53:46 | -59.6 | Dark | Down | 42.4 | 239.4 | Up | 07:45:41 - 08:01:52 | 4485 |
| Cedarville | 07:53:46 | -60.3 | Dark | Down | 42.7 | 240.1 | Up | 07:45:40 - 08:01:51 | 4413 |
| Fall River/Burney | 07:53:51 | -60.8 | Dark | Down | 43.7 | 239.2 | Up | 07:45:45 - 08:01:56 | 4395 |
| Susanville | 07:53:48 | -61.4 | Dark | Down | 43.5 | 240.5 | Up | 07:45:43 - 08:01:54 | 4310 |
| Greenville | 07:53:49 | -61.7 | Dark | Down | 43.9 | 240.4 | Up | 07:45:44 - 08:01:55 | 4289 |
| Quincy | 07:53:50 | -61.9 | Dark | Down | 44.0 | 240.6 | Up | 07:45:44 - 08:01:55 | 4269 |
| Portola | 07:53:48 | -62.0 | Dark | Down | 43.7 | 241.2 | Up | 07:45:42 - 08:01:53 | 4243 |
| Reno | 07:53:46 | -62.2 | Dark | Down | 43.4 | 242.0 | Up | 07:45:41 - 08:01:52 | 4198 |
| Carson City | 07:53:46 | -62.6 | Dark | Down | 43.5 | 242.4 | Up | 07:45:40 - 08:01:51 | 4160 |
| Gardnerville | 07:53:46 | -62.8 | Dark | Down | 43.6 | 242.6 | Up | 07:45:40 - 08:01:51 | 4133 |
| Yerington | 07:53:45 | -62.7 | Dark | Down | 43.2 | 243.1 | Up | 07:45:39 - 08:01:50 | 4124 |
| Hawthorne | 07:53:43 | -63.1 | Dark | Down | 43.0 | 244.0 | Up | 07:45:37 - 08:01:48 | 4061 |
| Lee Vining | 07:53:45 | -63.7 | Dark | Down | 43.6 | 244.0 | Up | 07:45:39 - 08:01:50 | 4015 |
| Tonopah | 07:53:39 | -63.4 | Dark | Down | 42.2 | 245.7 | Up | 07:45:33 - 08:01:44 | 3976 |
| Niwot | 07:53:05 | -58.0 | Dark | Down | 32.9 | 254.2 | Up | 07:45:00 - 08:01:11 | 3953 |
| Bishop | 07:53:43 | -64.2 | Dark | Down | 43.4 | 245.2 | Up | 07:45:37 - 08:01:48 | 3933 |
| Lone Pine | 07:53:42 | -64.9 | Dark | Down | 43.4 | 246.2 | Up | 07:45:37 - 08:01:48 | 3844 |
| Beatty | 07:53:38 | -64.5 | Dark | Down | 42.4 | 247.1 | Up | 07:45:33 - 08:01:44 | 3843 |
| Indian Springs | 07:53:35 | -64.6 | Dark | Down | 41.7 | 248.3 | Up | 07:45:29 - 08:01:40 | 3782 |
| CPSLO | 07:53:52 | -66.5 | Dark | Down | 45.9 | 245.0 | Up | 07:45:47 - 08:01:58 | 3778 |
| Henderson | 07:53:33 | -64.9 | Dark | Down | 41.4 | 249.3 | Up | 07:45:27 - 08:01:38 | 3708 |
| Searchlight/Boulder City | 07:53:33 | -65.5 | Dark | Down | 41.5 | 249.8 | Up | 07:45:28 - 08:01:39 | 3646 |
| Patrick | 07:53:30 | -65.2 | Dark | Down | 40.8 | 250.7 | Up | 07:45:24 - 08:01:35 | 3615 |
| Laughlin/Bullhead City | 07:53:32 | -65.6 | Dark | Down | 41.4 | 250.4 | Up | 07:45:27 - 08:01:38 | 3605 |
| Kingman/Dolan Springs | 07:53:31 | -65.5 | Dark | Down | 41.0 | 250.8 | Up | 07:45:25 - 08:01:36 | 3596 |
| Wildwood | 07:53:46 | -67.5 | Dark | Down | 44.8 | 248.0 | Up | 07:45:40 - 08:01:51 | 3594 |
| Mohave Valley | 07:53:32 | -65.9 | Dark | Down | 41.5 | 250.6 | Up | 07:45:27 - 08:01:38 | 3576 |
| DCO | 07:53:28 | -65.3 | Dark | Down | 40.3 | 251.6 | Up | 07:45:22 - 08:01:33 | 3566 |
| Lake Havasu City | 07:53:32 | -66.2 | Dark | Down | 41.4 | 251.1 | Up | 07:45:27 - 08:01:38 | 3528 |
| Idyllwild | 07:53:40 | -67.5 | Dark | Down | 43.5 | 249.9 | Up | 07:45:34 - 08:01:45 | 3506 |
| Parker | 07:53:32 | -66.5 | Dark | Down | 41.5 | 251.5 | Up | 07:45:26 - 08:01:37 | 3489 |
| Blythe | 07:53:33 | -67.1 | Dark | Down | 41.9 | 251.7 | Up | 07:45:28 - 08:01:39 | 3440 |
| Calipatria | 07:53:37 | -67.8 | Dark | Down | 42.8 | 251.4 | Up | 07:45:31 - 08:01:42 | 3411 |
| Yuma | 07:53:35 | -68.0 | Dark | Down | 42.2 | 252.4 | Up | 07:45:29 - 08:01:40 | 3343 |
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 470027, (2017/10/24 07:58UT) Object RA Dec mag sep mel Markab 23:04:45.7 +15:12:18 2.5 6.87 90 66 Peg 23:23:04.6 +12:18:51 6.3 2.26 93 PPM 174117 23:28:31.8 +09:25:38 7.7 1.41 94 PPM 142493 23:24:49.8 +10:31:18 9.5 0.58 93 PPM 142463 23:23:14.2 +10:03:51 11.0 0.04 93 470027 23:23:24.3 +10:03:37 12.9 93 Positions are for J2000
Event circumstances last updated at 2016/09/01 18:17:10 UT
Marc W. Buie, Southwest Research Institute