Event between (471512) 12CG and star TYC21421-00325-1 with event index number of 144663
Geocentric closest approach at 2017/01/24 05:51:33 UTC
J2000 position of star is 10:33:44.3 +15:51:10
Equinox of date position of star is 10:34:39.0 +15:45:52
Stellar brightness V=12.2,
use SENSEUP=16
Star is 107 degrees from the moon.
Moon is 14% illuminated.
TNO apparent brightness V=22.2
[RECON map]
TNO is 22.0 AU from the Sun
and 21.1 AU from the Earth.
The TNO is moving 20.3
km/sec on the sky relative to the star, or,
4.8 arcsec/hr.
The 1-sigma error in the time of the event is 81 seconds.
The 1-sigma cross-track error in the shadow position is
1157 km.
The sky-plane scale is
15304.1 km/arcsec.
The TNO has an absolute magnitude Hv=8.7
Diameter=109.7 km assuming a 5% albedo -- 5.4 sec chord
Diameter=44.8 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CENTAURR
Star training set for 471512, (2017/01/24 05:52UT) Object RA Dec mag sep mel Regulus 10:09:16.7 +11:52:59 1.3 7.28 112 46 Leo 10:33:06.3 +14:02:57 5.5 1.76 106 PPM 127588 10:39:49.3 +16:02:17 6.6 1.27 105 PPM 127497 10:33:59.5 +15:36:36 9.9 0.22 107 PPM 127515 10:34:51.4 +15:40:09 10.4 0.11 106 471512 10:34:39.1 +15:45:51 12.2 106 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 26.8 km
RECON observability=1.0 and success probability=32.9%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 05:55:58 | -49.9 | Dark | Down | 28.1 | 98.2 | Low | 05:48:45 - 06:03:10 | 1806 |
| Tonasket | 05:55:58 | -50.0 | Dark | Down | 28.2 | 98.1 | Low | 05:48:45 - 06:03:10 | 1781 |
| Okanogan | 05:55:59 | -50.2 | Dark | Down | 28.1 | 97.8 | Low | 05:48:47 - 06:03:12 | 1745 |
| Brewster | 05:55:59 | -50.2 | Dark | Down | 28.0 | 97.5 | Low | 05:48:47 - 06:03:12 | 1716 |
| Manson/Chelan | 05:56:00 | -50.1 | Dark | Down | 27.8 | 97.1 | Low | 05:48:47 - 06:03:12 | 1693 |
| Entiat | 05:56:00 | -50.2 | Dark | Down | 27.8 | 96.9 | Low | 05:48:48 - 06:03:13 | 1669 |
| Wenatchee | 05:56:01 | -50.3 | Dark | Down | 27.8 | 96.7 | Low | 05:48:48 - 06:03:13 | 1642 |
| Ellensburg | 05:56:02 | -50.4 | Dark | Down | 27.7 | 96.3 | Low | 05:48:49 - 06:03:14 | 1597 |
| Yakima | 05:56:02 | -50.6 | Dark | Down | 27.7 | 96.1 | Low | 05:48:50 - 06:03:15 | 1553 |
| Toppenish/White Swan | 05:56:02 | -50.8 | Dark | Down | 27.8 | 96.1 | Low | 05:48:50 - 06:03:15 | 1529 |
| Pasco | 05:56:00 | -51.6 | Dark | Down | 28.7 | 97.0 | Low | 05:48:47 - 06:03:12 | 1516 |
| PNWRO | 05:56:00 | -51.9 | Dark | Down | 28.9 | 97.0 | Low | 05:48:47 - 06:03:12 | 1489 |
| George/Umatilla | 05:56:01 | -51.7 | Dark | Down | 28.6 | 96.7 | Low | 05:48:48 - 06:03:13 | 1480 |
| Goldendale | 05:56:03 | -50.9 | Dark | Down | 27.6 | 95.5 | Low | 05:48:51 - 06:03:16 | 1470 |
| The Dalles | 05:56:04 | -50.8 | Dark | Down | 27.4 | 95.1 | Low | 05:48:52 - 06:03:17 | 1445 |
| Maupin | 05:56:05 | -51.0 | Dark | Down | 27.5 | 95.0 | Low | 05:48:52 - 06:03:17 | 1400 |
| Madras/Culver | 05:56:05 | -51.3 | Dark | Down | 27.5 | 94.7 | Low | 05:48:53 - 06:03:18 | 1340 |
| Sisters | 05:56:07 | -51.2 | Dark | Down | 27.2 | 94.2 | Low | 05:48:54 - 06:03:19 | 1304 |
| Redmond | 05:56:06 | -51.4 | Dark | Down | 27.5 | 94.4 | Low | 05:48:53 - 06:03:18 | 1301 |
| Bend | 05:56:06 | -51.5 | Dark | Down | 27.4 | 94.2 | Low | 05:48:54 - 06:03:19 | 1278 |
| Oregon Observatory | 05:56:07 | -51.5 | Dark | Down | 27.3 | 94.0 | Low | 05:48:54 - 06:03:19 | 1259 |
| La Pine/Gilchrist | 05:56:07 | -51.5 | Dark | Down | 27.3 | 93.9 | Low | 05:48:54 - 06:03:19 | 1237 |
| North Lake | 05:56:06 | -52.1 | Dark | Down | 27.8 | 94.1 | Low | 05:48:54 - 06:03:19 | 1188 |
| Paisley | 05:56:06 | -52.6 | Dark | Down | 28.1 | 94.1 | Low | 05:48:53 - 06:03:18 | 1127 |
| Chiloquin | 05:56:08 | -51.8 | Dark | Down | 27.1 | 93.1 | Low | 05:48:56 - 06:03:21 | 1115 |
| Klamath Falls | 05:56:09 | -52.0 | Dark | Down | 27.2 | 93.0 | Low | 05:48:56 - 06:03:21 | 1077 |
| Lakeview | 05:56:06 | -53.0 | Dark | Down | 28.2 | 93.9 | Low | 05:48:53 - 06:03:18 | 1072 |
| Tulelake | 05:56:08 | -52.3 | Dark | Down | 27.4 | 93.0 | Low | 05:48:56 - 06:03:21 | 1047 |
| Cedarville | 05:56:06 | -53.4 | Dark | Down | 28.4 | 93.7 | Low | 05:48:54 - 06:03:19 | 999 |
| Fall River/Burney | 05:56:09 | -52.8 | Dark | Down | 27.5 | 92.6 | Low | 05:48:56 - 06:03:21 | 947 |
| Niwot | 05:55:31 | -63.3 | Dark | Down | 39.7 | 103.6 | Up | 05:48:19 - 06:02:44 | 930 |
| Susanville | 05:56:07 | -53.6 | Dark | Down | 28.1 | 92.8 | Low | 05:48:55 - 06:03:20 | 877 |
| Greenville | 05:56:08 | -53.5 | Dark | Down | 27.9 | 92.4 | Low | 05:48:56 - 06:03:21 | 846 |
| Gimple | 05:56:08 | -53.5 | Dark | Down | 28.0 | 92.5 | Low | 05:48:56 - 06:03:21 | 846 |
| Quincy | 05:56:08 | -53.6 | Dark | Down | 27.9 | 92.3 | Low | 05:48:56 - 06:03:21 | 824 |
| Portola | 05:56:07 | -53.9 | Dark | Down | 28.3 | 92.6 | Low | 05:48:55 - 06:03:20 | 810 |
| Reno | 05:56:06 | -54.5 | Dark | Down | 28.8 | 92.9 | Low | 05:48:54 - 06:03:19 | 780 |
| Carson City | 05:56:07 | -54.7 | Dark | Down | 28.8 | 92.7 | Low | 05:48:54 - 06:03:19 | 740 |
| Yerington | 05:56:05 | -55.2 | Dark | Down | 29.3 | 93.0 | Low | 05:48:53 - 06:03:18 | 719 |
| Gardnerville | 05:56:07 | -54.8 | Dark | Down | 28.9 | 92.6 | Low | 05:48:54 - 06:03:19 | 713 |
| Hawthorne | 05:56:04 | -55.8 | Dark | Down | 29.8 | 93.0 | Low | 05:48:51 - 06:03:16 | 668 |
| Tonopah | 05:56:01 | -57.0 | Dark | Down | 30.9 | 93.7 | Up | 05:48:49 - 06:03:14 | 618 |
| Lee Vining | 05:56:05 | -55.7 | Dark | Down | 29.4 | 92.4 | Low | 05:48:53 - 06:03:18 | 605 |
| Bishop | 05:56:04 | -56.4 | Dark | Down | 30.0 | 92.5 | Up | 05:48:51 - 06:03:16 | 539 |
| Beatty | 05:56:00 | -57.8 | Dark | Down | 31.3 | 93.3 | Up | 05:48:48 - 06:03:13 | 491 |
| Indian Springs | 05:55:58 | -58.7 | Dark | Down | 32.2 | 93.7 | Up | 05:48:45 - 06:03:10 | 458 |
| Lone Pine | 05:56:03 | -57.0 | Dark | Down | 30.3 | 92.3 | Up | 05:48:51 - 06:03:16 | 456 |
| Henderson | 05:55:56 | -59.4 | Dark | Down | 32.8 | 93.8 | Up | 05:48:43 - 06:03:08 | 402 |
| Searchlight/Boulder City | 05:55:56 | -59.7 | Dark | Down | 32.9 | 93.5 | Up | 05:48:43 - 06:03:08 | 339 |
| Patrick | 05:55:53 | -60.5 | Dark | Down | 33.7 | 94.1 | Up | 05:48:41 - 06:03:06 | 338 |
| Kingman/Dolan Springs | 05:55:54 | -60.5 | Dark | Down | 33.6 | 93.9 | Up | 05:48:41 - 06:03:06 | 312 |
| CPSLO | 05:56:09 | -55.5 | Dark | Down | 28.3 | 90.0 | Low | 05:48:57 - 06:03:22 | 311 |
| DCO | 05:55:52 | -61.2 | Dark | Down | 34.3 | 94.3 | Up | 05:48:39 - 06:03:04 | 308 |
| Laughlin/Bullhead City | 05:55:55 | -60.1 | Dark | Down | 33.2 | 93.5 | Up | 05:48:43 - 06:03:08 | 307 |
| Mohave Valley | 05:55:55 | -60.2 | Dark | Down | 33.2 | 93.3 | Up | 05:48:43 - 06:03:08 | 277 |
| Lake Havasu City | 05:55:54 | -60.6 | Dark | Down | 33.4 | 93.2 | Up | 05:48:42 - 06:03:07 | 234 |
| Parker | 05:55:54 | -60.7 | Dark | Down | 33.5 | 93.0 | Up | 05:48:42 - 06:03:07 | 195 |
| Wildwood | 05:56:05 | -57.5 | Dark | Down | 29.9 | 90.5 | Low | 05:48:52 - 06:03:17 | 177 |
| Idyllwild | 05:56:00 | -59.0 | Dark | Down | 31.5 | 91.4 | Up | 05:48:48 - 06:03:13 | 140 |
| Blythe | 05:55:55 | -60.7 | Dark | Down | 33.2 | 92.5 | Up | 05:48:43 - 06:03:08 | 136 |
| Calipatria | 05:55:57 | -60.2 | Dark | Down | 32.5 | 91.7 | Up | 05:48:45 - 06:03:10 | 77 |
| Yuma | 05:55:55 | -61.0 | Dark | Down | 33.2 | 91.9 | Up | 05:48:42 - 06:03:07 | 34 |
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 471512, (2017/01/24 05:52UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 7.28 112 46 Leo 10:32:11.7 +14:08:14 5.5 1.76 106 PPM 127588 10:38:54.6 +16:07:38 6.6 1.27 105 PPM 127497 10:33:04.7 +15:41:54 9.9 0.22 107 PPM 127515 10:33:56.6 +15:45:28 10.4 0.11 106 471512 10:33:44.3 +15:51:10 12.2 107 Positions are for J2000
Event circumstances last updated at 2017/01/03 21:00:05 UT
Marc W. Buie, Southwest Research Institute