Event between 07TG422 and star UC4-490-007330 with event index number of 93516
Geocentric closest approach at 2017/12/19 10:11:01 UTC
J2000 position of star is 04:30:49.5 +07:56:49
Equinox of date position of star is 04:31:45.9 +07:59:00
Stellar brightness R=14.2,
use SENSEUP=64
Star is 146 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=22.0
[RECON map]
TNO is 37.6 AU from the Sun
and 36.7 AU from the Earth.
The TNO is moving 22.3
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 286 seconds.
The 1-sigma cross-track error in the shadow position is
3187 km.
The sky-plane scale is
26638.9 km/arcsec.
The TNO has an absolute magnitude Hv=6.2
Diameter=342.0 km assuming a 5% albedo -- 15.3 sec chord
Diameter=139.6 km assuming a 30% albedo -- 6.3 sec chord
Dynamical classification is SCATNEAR
Star training set for 07TG422, (2017/12/19 10:11UT) Object RA Dec mag sep mel Aldebaran 04:36:57.2 +16:32:38 0.8 8.65 150 Bellatrix 05:26:05.7 +06:21:52 1.6 13.56 157 PPM 147546 04:27:19.7 +08:37:47 6.1 1.28 145 PPM 147634 04:32:14.4 +07:29:25 8.5 0.51 146 PPM 147641 04:32:27.8 +07:59:04 9.9 0.17 146 07TG422 04:31:47.8 +07:59:05 14.2 146 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
3.1 sigma about the mid-time.
The median site spacing is 21.2 km
RECON observability=1.0 and success probability=1.2%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 10:08:34 | -53.4 | Dark | Down | 29.6 | 245.8 | Low | 09:53:34 - 10:23:34 | 10412 |
| Tonasket | 10:08:33 | -53.5 | Dark | Down | 29.7 | 245.9 | Low | 09:53:33 - 10:23:33 | 10394 |
| Okanogan | 10:08:34 | -53.8 | Dark | Down | 29.9 | 246.0 | Low | 09:53:34 - 10:23:34 | 10366 |
| Brewster | 10:08:33 | -54.0 | Dark | Down | 30.2 | 245.9 | Up | 09:53:33 - 10:23:33 | 10343 |
| Manson/Chelan | 10:08:33 | -54.4 | Dark | Down | 30.5 | 245.7 | Up | 09:53:33 - 10:23:33 | 10323 |
| Entiat | 10:08:32 | -54.5 | Dark | Down | 30.6 | 245.7 | Up | 09:53:32 - 10:23:32 | 10305 |
| Wenatchee | 10:08:32 | -54.7 | Dark | Down | 30.8 | 245.8 | Up | 09:53:32 - 10:23:32 | 10283 |
| Ellensburg | 10:08:31 | -55.1 | Dark | Down | 31.1 | 245.8 | Up | 09:53:31 - 10:23:31 | 10248 |
| Yakima | 10:08:30 | -55.3 | Dark | Down | 31.3 | 246.0 | Up | 09:53:30 - 10:23:30 | 10215 |
| Pasco | 10:08:26 | -54.6 | Dark | Down | 30.5 | 247.5 | Up | 09:53:26 - 10:23:26 | 10201 |
| Toppenish/White Swan | 10:08:29 | -55.3 | Dark | Down | 31.2 | 246.3 | Up | 09:53:29 - 10:23:29 | 10199 |
| PNWRO | 10:08:25 | -54.6 | Dark | Down | 30.4 | 247.8 | Up | 09:53:25 - 10:23:25 | 10184 |
| George/Umatilla | 10:08:25 | -54.9 | Dark | Down | 30.8 | 247.5 | Up | 09:53:25 - 10:23:25 | 10172 |
| Goldendale | 10:08:28 | -55.8 | Dark | Down | 31.7 | 246.2 | Up | 09:53:28 - 10:23:28 | 10150 |
| The Dalles | 10:08:28 | -56.2 | Dark | Down | 32.1 | 246.0 | Up | 09:53:28 - 10:23:28 | 10128 |
| Maupin | 10:08:27 | -56.3 | Dark | Down | 32.2 | 246.3 | Up | 09:53:27 - 10:23:27 | 10094 |
| Madras/Culver | 10:08:26 | -56.6 | Dark | Down | 32.4 | 246.6 | Up | 09:53:26 - 10:23:26 | 10049 |
| Redmond | 10:08:25 | -56.8 | Dark | Down | 32.6 | 246.8 | Up | 09:53:25 - 10:23:25 | 10018 |
| Sisters | 10:08:25 | -57.0 | Dark | Down | 32.8 | 246.4 | Up | 09:53:25 - 10:23:25 | 10016 |
| Bend | 10:08:25 | -57.0 | Dark | Down | 32.8 | 246.8 | Up | 09:53:25 - 10:23:25 | 9999 |
| Oregon Observatory | 10:08:24 | -57.2 | Dark | Down | 32.9 | 246.8 | Up | 09:53:24 - 10:23:24 | 9983 |
| La Pine/Gilchrist | 10:08:24 | -57.3 | Dark | Down | 33.1 | 246.8 | Up | 09:53:24 - 10:23:24 | 9965 |
| North Lake | 10:08:22 | -57.1 | Dark | Down | 32.8 | 247.6 | Up | 09:53:22 - 10:23:22 | 9934 |
| Paisley | 10:08:19 | -57.1 | Dark | Down | 32.8 | 248.2 | Up | 09:53:19 - 10:23:19 | 9891 |
| Chiloquin | 10:08:22 | -58.0 | Dark | Down | 33.7 | 247.2 | Up | 09:53:22 - 10:23:22 | 9866 |
| Lakeview | 10:08:17 | -57.2 | Dark | Down | 32.9 | 248.7 | Up | 09:53:17 - 10:23:17 | 9849 |
| Klamath Falls | 10:08:21 | -58.1 | Dark | Down | 33.8 | 247.5 | Up | 09:53:21 - 10:23:21 | 9838 |
| Niwot | 10:07:42 | -46.9 | Dark | Down | 22.5 | 261.2 | Low | 09:52:42 - 10:22:42 | 9837 |
| Tulelake | 10:08:19 | -58.1 | Dark | Down | 33.7 | 247.9 | Up | 09:53:19 - 10:23:19 | 9817 |
| Cedarville | 10:08:15 | -57.4 | Dark | Down | 33.0 | 249.2 | Up | 09:53:15 - 10:23:15 | 9794 |
| Fall River/Burney | 10:08:17 | -58.4 | Dark | Down | 34.0 | 248.5 | Up | 09:53:17 - 10:23:17 | 9738 |
| Susanville | 10:08:13 | -58.1 | Dark | Down | 33.7 | 249.5 | Up | 09:53:13 - 10:23:13 | 9691 |
| Gimple | 10:08:14 | -58.4 | Dark | Down | 34.0 | 249.5 | Up | 09:53:14 - 10:23:14 | 9664 |
| Greenville | 10:08:14 | -58.5 | Dark | Down | 34.0 | 249.5 | Up | 09:53:14 - 10:23:14 | 9663 |
| Quincy | 10:08:12 | -58.5 | Dark | Down | 34.1 | 249.6 | Up | 09:53:12 - 10:23:12 | 9645 |
| Portola | 10:08:11 | -58.2 | Dark | Down | 33.8 | 250.0 | Up | 09:53:11 - 10:23:11 | 9639 |
| Reno | 10:08:09 | -57.9 | Dark | Down | 33.4 | 250.7 | Up | 09:53:09 - 10:23:09 | 9622 |
| Carson City | 10:08:08 | -58.0 | Dark | Down | 33.5 | 251.0 | Up | 09:53:08 - 10:23:08 | 9590 |
| Yerington | 10:08:05 | -57.6 | Dark | Down | 33.1 | 251.6 | Up | 09:53:05 - 10:23:05 | 9580 |
| Gardnerville | 10:08:08 | -58.0 | Dark | Down | 33.6 | 251.2 | Up | 09:53:08 - 10:23:08 | 9569 |
| Hawthorne | 10:08:04 | -57.4 | Dark | Down | 32.9 | 252.3 | Up | 09:53:04 - 10:23:04 | 9543 |
| Tonopah | 10:08:00 | -56.4 | Dark | Down | 32.0 | 253.6 | Up | 09:53:00 - 10:23:00 | 9517 |
| Lee Vining | 10:08:03 | -57.9 | Dark | Down | 33.4 | 252.3 | Up | 09:53:03 - 10:23:03 | 9487 |
| Bishop | 10:08:00 | -57.5 | Dark | Down | 33.1 | 253.2 | Up | 09:53:00 - 10:23:00 | 9440 |
| Beatty | 10:07:55 | -56.4 | Dark | Down | 31.9 | 254.7 | Up | 09:52:55 - 10:22:55 | 9416 |
| Indian Springs | 10:07:52 | -55.6 | Dark | Down | 31.2 | 255.6 | Up | 09:52:52 - 10:22:52 | 9398 |
| Lone Pine | 10:07:57 | -57.5 | Dark | Down | 33.0 | 253.9 | Up | 09:52:57 - 10:22:57 | 9374 |
| Henderson | 10:07:49 | -55.2 | Dark | Down | 30.8 | 256.4 | Up | 09:52:49 - 10:22:49 | 9357 |
| Patrick | 10:07:45 | -54.4 | Dark | Down | 30.1 | 257.6 | Up | 09:52:45 - 10:22:45 | 9312 |
| Searchlight/Boulder City | 10:07:47 | -55.2 | Dark | Down | 30.9 | 256.8 | Up | 09:52:47 - 10:22:47 | 9305 |
| DCO | 10:07:42 | -53.9 | Dark | Down | 29.6 | 258.2 | Low | 09:52:42 - 10:22:42 | 9292 |
| Kingman/Dolan Springs | 10:07:44 | -54.6 | Dark | Down | 30.3 | 257.5 | Up | 09:52:44 - 10:22:44 | 9289 |
| Laughlin/Bullhead City | 10:07:46 | -55.0 | Dark | Down | 30.7 | 257.2 | Up | 09:52:46 - 10:22:46 | 9281 |
| Mohave Valley | 10:07:45 | -55.1 | Dark | Down | 30.7 | 257.4 | Up | 09:52:45 - 10:22:45 | 9255 |
| CPSLO | 10:08:00 | -59.8 | Dark | Down | 35.4 | 252.8 | Up | 09:53:00 - 10:23:00 | 9223 |
| Lake Havasu City | 10:07:44 | -54.9 | Dark | Down | 30.6 | 257.8 | Up | 09:52:44 - 10:22:44 | 9221 |
| Parker | 10:07:42 | -54.9 | Dark | Down | 30.7 | 258.0 | Up | 09:52:42 - 10:22:42 | 9188 |
| Blythe | 10:07:42 | -55.3 | Dark | Down | 31.0 | 258.1 | Up | 09:52:42 - 10:22:42 | 9135 |
| Wildwood | 10:07:52 | -58.4 | Dark | Down | 34.1 | 255.1 | Up | 09:52:52 - 10:22:52 | 9133 |
| Idyllwild | 10:07:47 | -57.0 | Dark | Down | 32.7 | 256.6 | Up | 09:52:47 - 10:22:47 | 9121 |
| Calipatria | 10:07:43 | -56.1 | Dark | Down | 31.9 | 257.8 | Up | 09:52:43 - 10:22:43 | 9076 |
| Yuma | 10:07:40 | -55.4 | Dark | Down | 31.3 | 258.6 | Up | 09:52:40 - 10:22:40 | 9046 |
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 07TG422, (2017/12/19 10:11UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 8.65 150 Bellatrix 05:25:07.8 +06:20:58 1.6 13.56 157 PPM 147546 04:26:21.1 +08:35:25 6.1 1.28 145 PPM 147634 04:31:16.3 +07:27:10 8.5 0.51 146 PPM 147641 04:31:29.5 +07:56:49 9.9 0.17 146 07TG422 04:30:49.5 +07:56:49 14.2 146 Positions are for J2000
Event circumstances last updated at 2017/05/15 18:04:14 UT
Marc W. Buie, Southwest Research Institute