Event between (85627) 98HP151 and star UC4-334-087151 with event index number of 65891
Geocentric closest approach at 2017/05/12 11:19:26 UTC
J2000 position of star is 16:58:38.2 -23:12:27
Equinox of date position of star is 16:59:37.8 -23:13:53
Stellar brightness R=16.5
Star is 9 degrees from the moon.
Moon is 98% illuminated.
TNO apparent brightness V=23.6
[RECON map]
TNO is 41.4 AU from the Sun
and 40.5 AU from the Earth.
The TNO is moving 21.9
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 586 seconds.
The 1-sigma cross-track error in the shadow position is
3566 km.
The sky-plane scale is
29380.0 km/arcsec.
The TNO has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 9.1 sec chord
Diameter=81.5 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is CLASSICAL
Star training set for 85627, (2017/05/12 11:19UT) Object RA Dec mag sep mel Antares 16:30:28.5 -26:28:09 0.9 7.37 10 23Tau Sco 16:36:58.0 -28:15:02 2.8 7.16 11 26 Oph 17:01:13.5 -25:00:51 5.8 1.82 10 PPM 266216 16:59:50.5 -24:00:44 8.5 0.78 9 PPM 266225 17:00:09.9 -23:23:31 9.6 0.19 9 85627 16:59:41.2 -23:13:58 16.5 9 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
1.5 sigma about the mid-time.
The median site spacing is 19.7 km
RECON observability=0.4 and success probability=4.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 11:18:28 | -9.0 | CT | Up | 14.2 | 204.5 | Really Low | 11:03:28 - 11:33:28 | 1381 |
| Tonasket | 11:18:27 | -9.1 | CT | Up | 14.4 | 204.5 | Really Low | 11:03:27 - 11:33:27 | 1373 |
| Okanogan | 11:18:27 | -9.4 | CT | Up | 14.8 | 204.4 | Really Low | 11:03:27 - 11:33:27 | 1362 |
| Brewster | 11:18:27 | -9.7 | CT | Up | 15.1 | 204.3 | Really Low | 11:03:27 - 11:33:27 | 1354 |
| Manson/Chelan | 11:18:28 | -10.0 | CT | Up | 15.4 | 204.0 | Really Low | 11:03:28 - 11:33:28 | 1349 |
| Entiat | 11:18:28 | -10.2 | CT | Up | 15.6 | 203.9 | Really Low | 11:03:28 - 11:33:28 | 1341 |
| Wenatchee | 11:18:28 | -10.4 | CT | Up | 15.9 | 203.9 | Really Low | 11:03:28 - 11:33:28 | 1333 |
| Ellensburg | 11:18:28 | -10.8 | CT | Up | 16.3 | 203.7 | Really Low | 11:03:28 - 11:33:28 | 1319 |
| Yakima | 11:18:27 | -11.1 | CT | Up | 16.7 | 203.7 | Really Low | 11:03:27 - 11:33:27 | 1303 |
| Toppenish/White Swan | 11:18:26 | -11.2 | CT | Up | 16.8 | 203.9 | Really Low | 11:03:26 - 11:33:26 | 1294 |
| Pasco | 11:18:22 | -10.6 | CT | Up | 16.6 | 205.1 | Really Low | 11:03:22 - 11:33:22 | 1281 |
| Goldendale | 11:18:27 | -11.7 | CT | Up | 17.5 | 203.6 | Really Low | 11:03:27 - 11:33:27 | 1276 |
| PNWRO | 11:18:21 | -10.6 | CT | Up | 16.7 | 205.3 | Really Low | 11:03:21 - 11:33:21 | 1270 |
| George/Umatilla | 11:18:22 | -10.9 | CT | Up | 17.0 | 204.9 | Really Low | 11:03:22 - 11:33:22 | 1269 |
| The Dalles | 11:18:27 | -12.1 | AT | Up | 17.8 | 203.3 | Really Low | 11:03:27 - 11:33:27 | 1268 |
| Maupin | 11:18:26 | -12.3 | AT | Up | 18.1 | 203.4 | Really Low | 11:03:26 - 11:33:26 | 1251 |
| Madras/Culver | 11:18:25 | -12.7 | AT | Up | 18.6 | 203.5 | Really Low | 11:03:25 - 11:33:25 | 1229 |
| Sisters | 11:18:27 | -13.2 | AT | Up | 19.1 | 203.1 | Really Low | 11:03:27 - 11:33:27 | 1219 |
| Redmond | 11:18:25 | -13.0 | AT | Up | 19.0 | 203.5 | Really Low | 11:03:25 - 11:33:25 | 1215 |
| Bend | 11:18:25 | -13.2 | AT | Up | 19.2 | 203.4 | Really Low | 11:03:25 - 11:33:25 | 1207 |
| Oregon Observatory | 11:18:25 | -13.4 | AT | Up | 19.4 | 203.3 | Really Low | 11:03:25 - 11:33:25 | 1201 |
| La Pine/Gilchrist | 11:18:25 | -13.5 | AT | Up | 19.6 | 203.2 | Really Low | 11:03:25 - 11:33:25 | 1192 |
| North Lake | 11:18:22 | -13.5 | AT | Up | 19.8 | 203.9 | Really Low | 11:03:22 - 11:33:22 | 1170 |
| Chiloquin | 11:18:25 | -14.5 | AT | Up | 20.7 | 203.1 | Low | 11:03:25 - 11:33:25 | 1145 |
| Paisley | 11:18:21 | -13.7 | AT | Up | 20.2 | 204.3 | Low | 11:03:21 - 11:33:21 | 1143 |
| Klamath Falls | 11:18:24 | -14.7 | AT | Up | 21.0 | 203.2 | Low | 11:03:24 - 11:33:24 | 1129 |
| Lakeview | 11:18:20 | -13.9 | AT | Up | 20.6 | 204.5 | Low | 11:03:20 - 11:33:20 | 1119 |
| Tulelake | 11:18:22 | -14.7 | AT | Up | 21.2 | 203.5 | Low | 11:03:22 - 11:33:22 | 1115 |
| Cedarville | 11:18:18 | -14.3 | AT | Up | 21.2 | 204.8 | Low | 11:03:18 - 11:33:18 | 1087 |
| Fall River/Burney | 11:18:21 | -15.3 | AT | Up | 22.0 | 203.7 | Low | 11:03:21 - 11:33:21 | 1072 |
| Susanville | 11:18:18 | -15.3 | AT | Up | 22.4 | 204.5 | Low | 11:03:18 - 11:33:18 | 1037 |
| Greenville | 11:18:18 | -15.6 | AT | Up | 22.7 | 204.3 | Low | 11:03:18 - 11:33:18 | 1025 |
| Quincy | 11:18:18 | -15.8 | AT | Up | 22.9 | 204.3 | Low | 11:03:18 - 11:33:18 | 1015 |
| Portola | 11:18:16 | -15.6 | AT | Up | 22.8 | 204.8 | Low | 11:03:16 - 11:33:16 | 1006 |
| Reno | 11:18:14 | -15.4 | AT | Up | 22.9 | 205.4 | Low | 11:03:14 - 11:33:14 | 988 |
| Carson City | 11:18:13 | -15.6 | AT | Up | 23.2 | 205.5 | Low | 11:03:13 - 11:33:13 | 970 |
| Gardnerville | 11:18:12 | -15.7 | AT | Up | 23.4 | 205.6 | Low | 11:03:12 - 11:33:12 | 957 |
| Yerington | 11:18:11 | -15.3 | AT | Up | 23.2 | 206.1 | Low | 11:03:11 - 11:33:11 | 955 |
| Hawthorne | 11:18:07 | -15.3 | AT | Up | 23.4 | 206.7 | Low | 11:03:07 - 11:33:07 | 927 |
| Lee Vining | 11:18:08 | -16.0 | AT | Up | 24.1 | 206.4 | Low | 11:03:08 - 11:33:08 | 901 |
| Tonopah | 11:18:02 | -14.8 | AT | Up | 23.3 | 208.1 | Low | 11:03:02 - 11:33:02 | 890 |
| Bishop | 11:18:05 | -15.9 | AT | Up | 24.4 | 207.1 | Low | 11:03:05 - 11:33:05 | 863 |
| Niwot | 11:17:27 | -6.0 | CT | Up | 16.6 | 218.0 | Really Low | 11:02:27 - 11:32:27 | 852 |
| Beatty | 11:17:58 | -15.2 | AT | Up | 24.2 | 208.7 | Low | 11:02:58 - 11:32:58 | 823 |
| Lone Pine | 11:18:02 | -16.2 | AT | Up | 24.9 | 207.6 | Low | 11:03:02 - 11:33:02 | 818 |
| Indian Springs | 11:17:54 | -14.7 | AT | Up | 24.0 | 209.8 | Low | 11:02:54 - 11:32:54 | 794 |
| CPSLO | 11:18:10 | -18.6 | Dark | Up | 27.0 | 205.5 | Low | 11:03:10 - 11:33:10 | 764 |
| Henderson | 11:17:50 | -14.6 | AT | Up | 24.2 | 210.5 | Low | 11:02:50 - 11:32:50 | 757 |
| Searchlight/Boulder City | 11:17:49 | -14.9 | AT | Up | 24.7 | 210.7 | Low | 11:02:49 - 11:32:49 | 723 |
| Patrick | 11:17:45 | -14.2 | AT | Up | 24.3 | 211.6 | Low | 11:02:45 - 11:32:45 | 709 |
| Laughlin/Bullhead City | 11:17:47 | -14.8 | AT | Up | 24.8 | 211.1 | Low | 11:02:47 - 11:32:47 | 702 |
| Kingman/Dolan Springs | 11:17:46 | -14.5 | AT | Up | 24.6 | 211.5 | Low | 11:02:46 - 11:32:46 | 698 |
| Mohave Valley | 11:17:47 | -15.0 | AT | Up | 25.0 | 211.1 | Low | 11:02:47 - 11:32:47 | 686 |
| DCO | 11:17:42 | -13.9 | AT | Up | 24.3 | 212.3 | Low | 11:02:42 - 11:32:42 | 683 |
| Wildwood | 11:18:00 | -18.1 | Dark | Up | 27.3 | 207.7 | Low | 11:03:00 - 11:33:00 | 678 |
| Lake Havasu City | 11:17:45 | -15.1 | AT | Up | 25.3 | 211.4 | Low | 11:02:45 - 11:32:45 | 659 |
| Idyllwild | 11:17:53 | -17.1 | AT | Up | 26.9 | 209.5 | Low | 11:02:53 - 11:32:53 | 640 |
| Parker | 11:17:44 | -15.3 | AT | Up | 25.6 | 211.6 | Low | 11:02:44 - 11:32:44 | 638 |
| Blythe | 11:17:45 | -15.8 | AT | Up | 26.1 | 211.4 | Low | 11:02:45 - 11:32:45 | 610 |
| Calipatria | 11:17:47 | -16.7 | AT | Up | 27.0 | 210.7 | Low | 11:02:47 - 11:32:47 | 589 |
| Yuma | 11:17:43 | -16.3 | AT | Up | 26.9 | 211.6 | Low | 11:02:43 - 11:32:43 | 553 |
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 85627, (2017/05/12 11:19UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:55 0.9 7.37 10 23Tau Sco 16:35:53.0 -28:12:58 2.8 7.16 11 26 Oph 17:00:09.6 -24:59:22 5.8 1.82 10 PPM 266216 16:58:47.1 -23:59:13 8.5 0.78 9 PPM 266225 16:59:06.9 -23:22:00 9.6 0.19 9 85627 16:58:38.2 -23:12:27 16.5 9 Positions are for J2000
Event circumstances last updated at 2016/06/09 19:04:00 UT
Marc W. Buie, Southwest Research Institute