Event between 01KD77 and star UC4-341-146749 with event index number of 122549
Geocentric closest approach at 2017/10/07 02:35:15 UTC
J2000 position of star is 18:27:48.3 -21:48:24
Equinox of date position of star is 18:28:50.9 -21:47:42
Stellar brightness R=15.8,
use SENSEUP=128
Star is 115 degrees from the moon.
Moon is 98% illuminated.
TNO apparent brightness V=21.4
[RECON map]
TNO is 36.3 AU from the Sun
and 36.5 AU from the Earth.
The TNO is moving 9.5
km/sec on the sky relative to the star, or,
1.3 arcsec/hr.
The 1-sigma error in the time of the event is 719 seconds.
The 1-sigma cross-track error in the shadow position is
1607 km.
The sky-plane scale is
26440.4 km/arcsec.
The TNO has an absolute magnitude Hv=5.6
Diameter=461.3 km assuming a 5% albedo -- 48.7 sec chord
Diameter=188.3 km assuming a 30% albedo -- 19.9 sec chord
Dynamical classification is 3:2E
Star training set for 01KD77, (2017/10/07 02:35UT) Object RA Dec mag sep mel Antares 16:30:30.0 -26:28:12 0.9 27.35 141 Nunki 18:56:21.9 -26:16:23 2.0 7.71 109 21 Sgr 18:26:24.5 -20:31:50 4.1 1.39 116 PPM 268487 18:30:55.0 -20:56:22 8.3 0.98 115 PPM 268426 18:28:23.7 -21:38:53 9.6 0.18 115 01KD77 18:28:52.3 -21:47:41 15.8 115 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
1.3 sigma about the mid-time.
The median site spacing is 26.1 km
RECON observability=0.3 and success probability=0.3%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 02:37:11 | -12.6 | AT | Up | 17.3 | 198.3 | Really Low | 02:22:11 - 02:52:11 | 6395 |
| Tonasket | 02:37:11 | -12.7 | AT | Up | 17.5 | 198.3 | Really Low | 02:22:11 - 02:52:11 | 6386 |
| Okanogan | 02:37:11 | -12.6 | AT | Up | 17.9 | 198.2 | Really Low | 02:22:11 - 02:52:11 | 6374 |
| Brewster | 02:37:09 | -12.5 | AT | Up | 18.2 | 198.1 | Really Low | 02:22:09 - 02:52:09 | 6365 |
| Manson/Chelan | 02:37:07 | -12.2 | AT | Up | 18.4 | 197.7 | Really Low | 02:22:07 - 02:52:07 | 6359 |
| Entiat | 02:37:09 | -12.2 | AT | Up | 18.7 | 197.7 | Really Low | 02:22:09 - 02:52:09 | 6351 |
| Wenatchee | 02:37:09 | -12.2 | AT | Up | 18.9 | 197.6 | Really Low | 02:22:09 - 02:52:09 | 6341 |
| Ellensburg | 02:37:07 | -12.1 | AT | Up | 19.4 | 197.4 | Really Low | 02:22:07 - 02:52:07 | 6326 |
| Yakima | 02:37:10 | -12.1 | AT | Up | 19.8 | 197.5 | Really Low | 02:22:10 - 02:52:10 | 6309 |
| Toppenish/White Swan | 02:37:10 | -12.2 | AT | Up | 19.9 | 197.7 | Really Low | 02:22:10 - 02:52:10 | 6299 |
| Pasco | 02:37:22 | -13.1 | AT | Up | 19.7 | 198.9 | Really Low | 02:22:22 - 02:52:22 | 6287 |
| Goldendale | 02:37:09 | -12.0 | CT | Up | 20.5 | 197.3 | Low | 02:22:09 - 02:52:09 | 6279 |
| PNWRO | 02:37:24 | -13.3 | AT | Up | 19.9 | 199.2 | Really Low | 02:22:24 - 02:52:24 | 6275 |
| George/Umatilla | 02:37:21 | -13.0 | AT | Up | 20.1 | 198.8 | Low | 02:22:21 - 02:52:21 | 6274 |
| The Dalles | 02:37:06 | -11.7 | CT | Up | 20.8 | 197.0 | Low | 02:22:06 - 02:52:06 | 6271 |
| Maupin | 02:37:07 | -11.8 | CT | Up | 21.2 | 197.1 | Low | 02:22:07 - 02:52:07 | 6252 |
| Madras/Culver | 02:37:10 | -11.8 | CT | Up | 21.7 | 197.1 | Low | 02:22:10 - 02:52:10 | 6229 |
| Sisters | 02:37:06 | -11.5 | CT | Down | 22.2 | 196.7 | Low | 02:22:06 - 02:52:06 | 6216 |
| Redmond | 02:37:09 | -11.8 | CT | Up | 22.1 | 197.1 | Low | 02:22:09 - 02:52:09 | 6213 |
| Bend | 02:37:09 | -11.7 | CT | Up | 22.3 | 197.0 | Low | 02:22:09 - 02:52:09 | 6204 |
| Oregon Observatory | 02:37:09 | -11.7 | CT | Up | 22.5 | 196.9 | Low | 02:22:09 - 02:52:09 | 6197 |
| La Pine/Gilchrist | 02:37:09 | -11.6 | CT | Down | 22.7 | 196.9 | Low | 02:22:09 - 02:52:09 | 6188 |
| North Lake | 02:37:14 | -12.1 | AT | Up | 23.0 | 197.6 | Low | 02:22:14 - 02:52:14 | 6164 |
| Chiloquin | 02:37:08 | -11.4 | CT | Down | 23.9 | 196.7 | Low | 02:22:08 - 02:52:08 | 6137 |
| Paisley | 02:37:21 | -12.4 | AT | Up | 23.4 | 198.0 | Low | 02:22:21 - 02:52:21 | 6136 |
| Klamath Falls | 02:37:09 | -11.5 | CT | Down | 24.2 | 196.8 | Low | 02:22:09 - 02:52:09 | 6120 |
| Lakeview | 02:37:23 | -12.6 | AT | Up | 23.9 | 198.3 | Low | 02:22:23 - 02:52:23 | 6110 |
| Tulelake | 02:37:14 | -11.8 | CT | Down | 24.4 | 197.2 | Low | 02:22:14 - 02:52:14 | 6105 |
| Cedarville | 02:37:27 | -12.8 | AT | Up | 24.5 | 198.6 | Low | 02:22:27 - 02:52:27 | 6077 |
| Fall River/Burney | 02:37:17 | -11.9 | CT | Down | 25.2 | 197.4 | Low | 02:22:17 - 02:52:17 | 6059 |
| Susanville | 02:37:25 | -12.5 | AT | Up | 25.6 | 198.2 | Low | 02:22:25 - 02:52:25 | 6022 |
| Greenville | 02:37:23 | -12.3 | AT | Down | 26.0 | 198.0 | Low | 02:22:23 - 02:52:23 | 6010 |
| Gimple | 02:37:24 | -12.4 | AT | Down | 25.9 | 198.1 | Low | 02:22:24 - 02:52:24 | 6009 |
| Quincy | 02:37:24 | -12.3 | AT | Down | 26.2 | 198.0 | Low | 02:22:24 - 02:52:24 | 5999 |
| Portola | 02:37:29 | -12.7 | AT | Up | 26.2 | 198.5 | Low | 02:22:29 - 02:52:29 | 5990 |
| Reno | 02:37:36 | -13.2 | AT | Up | 26.2 | 199.2 | Low | 02:22:36 - 02:52:36 | 5971 |
| Carson City | 02:37:37 | -13.3 | AT | Up | 26.6 | 199.3 | Low | 02:22:37 - 02:52:37 | 5952 |
| Gardnerville | 02:37:37 | -13.3 | AT | Up | 26.8 | 199.4 | Low | 02:22:37 - 02:52:37 | 5938 |
| Yerington | 02:37:44 | -13.8 | AT | Up | 26.6 | 200.0 | Low | 02:22:44 - 02:52:44 | 5937 |
| Hawthorne | 02:37:50 | -14.3 | AT | Up | 26.9 | 200.7 | Low | 02:22:50 - 02:52:50 | 5907 |
| Lee Vining | 02:37:45 | -13.9 | AT | Up | 27.5 | 200.3 | Low | 02:22:45 - 02:52:45 | 5880 |
| Tonopah | 02:38:03 | -15.5 | AT | Up | 26.9 | 202.2 | Low | 02:23:03 - 02:53:03 | 5870 |
| Niwot | 02:39:38 | -24.6 | Dark | Up | 20.6 | 213.4 | Low | 02:24:38 - 02:54:38 | 5844 |
| Bishop | 02:37:54 | -14.6 | AT | Up | 27.9 | 201.1 | Low | 02:22:54 - 02:52:54 | 5840 |
| Beatty | 02:38:12 | -16.0 | AT | Up | 27.8 | 202.9 | Low | 02:23:12 - 02:53:12 | 5799 |
| Lone Pine | 02:37:59 | -14.9 | AT | Up | 28.5 | 201.6 | Low | 02:22:59 - 02:52:59 | 5793 |
| Indian Springs | 02:38:21 | -16.9 | AT | Up | 27.7 | 204.1 | Low | 02:23:21 - 02:53:21 | 5770 |
| CPSLO | 02:37:38 | -12.8 | AT | Down | 30.5 | 199.2 | Up | 02:22:38 - 02:52:38 | 5734 |
| Henderson | 02:38:30 | -17.5 | AT | Up | 28.0 | 204.9 | Low | 02:23:30 - 02:53:30 | 5731 |
| Searchlight/Boulder City | 02:38:32 | -17.6 | AT | Up | 28.5 | 205.1 | Low | 02:23:32 - 02:53:32 | 5696 |
| Patrick | 02:38:43 | -18.5 | Dark | Up | 28.1 | 206.2 | Low | 02:23:43 - 02:53:43 | 5682 |
| Laughlin/Bullhead City | 02:38:37 | -18.0 | AT | Up | 28.6 | 205.6 | Low | 02:23:37 - 02:53:37 | 5674 |
| Kingman/Dolan Springs | 02:38:41 | -18.4 | Dark | Up | 28.4 | 206.1 | Low | 02:23:41 - 02:53:41 | 5670 |
| Mohave Valley | 02:38:38 | -18.0 | Dark | Up | 28.9 | 205.6 | Low | 02:23:38 - 02:53:38 | 5657 |
| DCO | 02:38:51 | -19.2 | Dark | Up | 28.1 | 207.0 | Low | 02:23:51 - 02:53:51 | 5656 |
| Wildwood | 02:38:01 | -14.6 | AT | Up | 31.0 | 201.6 | Up | 02:23:01 - 02:53:01 | 5645 |
| Lake Havasu City | 02:38:41 | -18.3 | Dark | Up | 29.1 | 206.0 | Low | 02:23:41 - 02:53:41 | 5629 |
| Parker | 02:38:43 | -18.3 | Dark | Up | 29.4 | 206.1 | Low | 02:23:43 - 02:53:43 | 5607 |
| Idyllwild | 02:38:22 | -16.3 | AT | Up | 30.7 | 203.7 | Up | 02:23:22 - 02:53:22 | 5606 |
| Blythe | 02:38:41 | -18.1 | Dark | Up | 30.0 | 205.9 | Up | 02:23:41 - 02:53:41 | 5577 |
| Calipatria | 02:38:34 | -17.4 | AT | Up | 30.8 | 205.1 | Up | 02:23:34 - 02:53:34 | 5555 |
| Yuma | 02:38:43 | -18.2 | Dark | Up | 30.9 | 206.1 | Up | 02:23:43 - 02:53:43 | 5517 |
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 01KD77, (2017/10/07 02:35UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 27.35 141 Nunki 18:55:15.9 -26:17:49 2.0 7.71 109 21 Sgr 18:25:21.1 -20:32:31 4.1 1.39 116 PPM 268487 18:29:51.3 -20:57:10 8.3 0.98 115 PPM 268426 18:27:19.8 -21:39:36 9.6 0.18 115 01KD77 18:27:48.3 -21:48:24 15.8 115 Positions are for J2000
Event circumstances last updated at 2017/05/13 17:32:44 UT
Marc W. Buie, Southwest Research Institute