Event between (10370) Hylonome and star GA0700:32028024 with event index number of 271656
Geocentric closest approach at 2020/06/17 06:29:58 UTC
J2000 position of star is 19:06:32.5 -18:24:17
Equinox of date position of star is 19:07:40.5 -18:22:25
Stellar brightness G=16.1,
use SENSEUP=128
Star is 115 degrees from the moon.
Moon is 15% illuminated.
TNO apparent brightness V=22.5
[RECON map]
TNO is 24.6 AU from the Sun
and 23.7 AU from the Earth.
The TNO is moving 21.7
km/sec on the sky relative to the star, or,
4.6 arcsec/hr.
The 1-sigma error in the time of the event is 1514 seconds.
The 1-sigma cross-track error in the shadow position is
5598 km.
The sky-plane scale is
17181.2 km/arcsec.
The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 5.3 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CENTAURR
Star training set for 10370, (2020/06/17 06:30UT) Object RA Dec mag sep mel Antares 16:30:39.9 -26:28:32 0.9 37.04 149 Nunki 18:56:32.0 -26:16:10 2.0 8.31 118 PPM 235542 19:09:28.8 -19:15:24 5.9 0.98 114 PPM 235484 19:07:13.5 -18:08:00 8.3 0.27 115 10370 19:07:44.1 -18:22:19 16.1 115 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
0.6 sigma about the mid-time.
The median site spacing is 12.2 km
RECON observability=0.4 and success probability=1.8%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 06:31:42 | -14.2 | AT | Down | 12.2 | 139.4 | Really Low | 06:16:42 - 06:46:42 | 7922 |
| Summerland | 06:31:43 | -14.4 | AT | Down | 12.3 | 139.1 | Really Low | 06:16:43 - 06:46:43 | 7906 |
| Penticton | 06:31:43 | -14.5 | AT | Down | 12.4 | 139.2 | Really Low | 06:16:43 - 06:46:43 | 7905 |
| Okanagan Falls | 06:31:44 | -14.7 | AT | Down | 12.6 | 139.1 | Really Low | 06:16:44 - 06:46:44 | 7896 |
| Oliver | 06:31:44 | -14.9 | AT | Down | 12.7 | 139.1 | Really Low | 06:16:44 - 06:46:44 | 7889 |
| Anarchist Mountain Observatory | 06:31:45 | -15.1 | AT | Down | 12.9 | 139.3 | Really Low | 06:16:45 - 06:46:45 | 7884 |
| Oroville | 06:31:44 | -15.1 | AT | Down | 12.9 | 139.2 | Really Low | 06:16:44 - 06:46:44 | 7879 |
| Tonasket | 06:31:45 | -15.3 | AT | Down | 13.1 | 139.2 | Really Low | 06:16:45 - 06:46:45 | 7869 |
| Okanogan | 06:31:46 | -15.6 | AT | Down | 13.3 | 139.0 | Really Low | 06:16:46 - 06:46:46 | 7852 |
| Brewster | 06:31:48 | -15.8 | AT | Down | 13.4 | 138.8 | Really Low | 06:16:48 - 06:46:48 | 7838 |
| Manson/Chelan | 06:31:49 | -15.9 | AT | Down | 13.4 | 138.4 | Really Low | 06:16:49 - 06:46:49 | 7824 |
| Entiat | 06:31:50 | -16.1 | AT | Down | 13.6 | 138.3 | Really Low | 06:16:50 - 06:46:50 | 7813 |
| Wenatchee | 06:31:51 | -16.3 | AT | Down | 13.7 | 138.2 | Really Low | 06:16:51 - 06:46:51 | 7800 |
| Ellensburg | 06:31:52 | -16.7 | AT | Down | 13.9 | 138.0 | Really Low | 06:16:52 - 06:46:52 | 7778 |
| Yakima | 06:31:53 | -17.0 | AT | Down | 14.2 | 137.9 | Really Low | 06:16:53 - 06:46:53 | 7758 |
| Pasco | 06:31:51 | -17.7 | AT | Down | 15.1 | 139.1 | Really Low | 06:16:51 - 06:46:51 | 7758 |
| Toppenish/White Swan | 06:31:55 | -17.3 | AT | Down | 14.5 | 138.0 | Really Low | 06:16:55 - 06:46:55 | 7749 |
| PNWRO | 06:31:51 | -18.0 | AT | Down | 15.4 | 139.2 | Really Low | 06:16:51 - 06:46:51 | 7748 |
| George/Umatilla | 06:31:52 | -18.0 | AT | Down | 15.3 | 138.8 | Really Low | 06:16:52 - 06:46:52 | 7739 |
| Goldendale | 06:31:56 | -17.7 | AT | Down | 14.7 | 137.5 | Really Low | 06:16:56 - 06:46:56 | 7717 |
| The Dalles | 06:31:58 | -17.8 | AT | Down | 14.7 | 137.2 | Really Low | 06:16:58 - 06:46:58 | 7701 |
| Maupin | 06:31:59 | -18.2 | Dark | Down | 15.0 | 137.2 | Really Low | 06:16:59 - 06:46:59 | 7681 |
| Madras/Culver | 06:32:00 | -18.7 | Dark | Down | 15.4 | 137.1 | Really Low | 06:17:00 - 06:47:00 | 7652 |
| Redmond | 06:32:02 | -19.0 | Dark | Down | 15.7 | 137.0 | Really Low | 06:17:02 - 06:47:02 | 7633 |
| Sisters | 06:32:03 | -18.9 | Dark | Down | 15.4 | 136.6 | Really Low | 06:17:03 - 06:47:03 | 7629 |
| Bend | 06:32:03 | -19.2 | Dark | Down | 15.7 | 136.8 | Really Low | 06:17:03 - 06:47:03 | 7620 |
| Oregon Observatory | 06:32:03 | -19.3 | Dark | Down | 15.8 | 136.7 | Really Low | 06:17:03 - 06:47:03 | 7609 |
| La Pine/Gilchrist | 06:32:04 | -19.5 | Dark | Down | 15.9 | 136.6 | Really Low | 06:17:04 - 06:47:04 | 7597 |
| North Lake | 06:32:04 | -20.1 | Dark | Down | 16.5 | 137.0 | Really Low | 06:17:04 - 06:47:04 | 7581 |
| Paisley | 06:32:04 | -20.7 | Dark | Down | 17.1 | 137.2 | Really Low | 06:17:04 - 06:47:04 | 7555 |
| Niwot | 06:31:22 | -26.1 | Dark | Down | 25.9 | 150.3 | Low | 06:16:22 - 06:46:22 | 7551 |
| SwRI | 06:31:23 | -26.2 | Dark | Down | 26.0 | 150.2 | Low | 06:16:23 - 06:46:23 | 7544 |
| Chiloquin | 06:32:08 | -20.4 | Dark | Down | 16.6 | 136.1 | Really Low | 06:17:08 - 06:47:08 | 7532 |
| Lakeview | 06:32:05 | -21.2 | Dark | Down | 17.6 | 137.3 | Really Low | 06:17:05 - 06:47:05 | 7530 |
| Klamath Falls | 06:32:09 | -20.7 | Dark | Down | 16.8 | 136.1 | Really Low | 06:17:09 - 06:47:09 | 7514 |
| Tulelake | 06:32:09 | -21.1 | Dark | Down | 17.2 | 136.3 | Really Low | 06:17:09 - 06:47:09 | 7502 |
| Cedarville | 06:32:06 | -21.8 | Dark | Down | 18.2 | 137.3 | Really Low | 06:17:06 - 06:47:06 | 7495 |
| Fall River/Burney | 06:32:11 | -21.9 | Dark | Down | 17.9 | 136.1 | Really Low | 06:17:11 - 06:47:11 | 7451 |
| Susanville | 06:32:10 | -22.7 | Dark | Down | 18.7 | 136.6 | Really Low | 06:17:10 - 06:47:10 | 7424 |
| Gimple | 06:32:12 | -22.9 | Dark | Down | 18.8 | 136.4 | Really Low | 06:17:12 - 06:47:12 | 7405 |
| Greenville | 06:32:12 | -22.9 | Dark | Down | 18.8 | 136.3 | Really Low | 06:17:12 - 06:47:12 | 7404 |
| Quincy | 06:32:12 | -23.1 | Dark | Down | 18.9 | 136.3 | Really Low | 06:17:12 - 06:47:12 | 7392 |
| Portola | 06:32:11 | -23.4 | Dark | Down | 19.3 | 136.6 | Really Low | 06:17:11 - 06:47:11 | 7390 |
| Reno | 06:32:10 | -23.8 | Dark | Down | 19.8 | 137.1 | Really Low | 06:17:10 - 06:47:10 | 7383 |
| Carson City | 06:32:11 | -24.1 | Dark | Down | 20.1 | 137.0 | Low | 06:17:11 - 06:47:11 | 7361 |
| Yerington | 06:32:10 | -24.5 | Dark | Down | 20.6 | 137.5 | Low | 06:17:10 - 06:47:10 | 7357 |
| Gardnerville | 06:32:11 | -24.4 | Dark | Down | 20.3 | 137.0 | Low | 06:17:11 - 06:47:11 | 7347 |
| Hawthorne | 06:32:10 | -25.1 | Dark | Down | 21.2 | 137.9 | Low | 06:17:10 - 06:47:10 | 7335 |
| Tonopah | 06:32:05 | -25.9 | Dark | Down | 22.3 | 138.9 | Low | 06:17:05 - 06:47:05 | 7323 |
| Lee Vining | 06:32:11 | -25.5 | Dark | Down | 21.4 | 137.3 | Low | 06:17:11 - 06:47:11 | 7294 |
| Bishop | 06:32:11 | -26.2 | Dark | Down | 22.2 | 137.8 | Low | 06:17:11 - 06:47:11 | 7265 |
| Beatty | 06:32:07 | -27.1 | Dark | Down | 23.4 | 139.0 | Low | 06:17:07 - 06:47:07 | 7255 |
| Indian Springs | 06:32:04 | -27.7 | Dark | Down | 24.2 | 139.8 | Low | 06:17:04 - 06:47:04 | 7247 |
| Lone Pine | 06:32:11 | -27.0 | Dark | Down | 22.9 | 137.8 | Low | 06:17:11 - 06:47:11 | 7221 |
| Henderson | 06:32:03 | -28.4 | Dark | Down | 25.0 | 140.3 | Low | 06:17:03 - 06:47:03 | 7220 |
| Patrick | 06:32:00 | -29.3 | Dark | Down | 26.0 | 141.1 | Low | 06:17:00 - 06:47:00 | 7191 |
| Searchlight/Boulder City | 06:32:04 | -28.9 | Dark | Down | 25.4 | 140.2 | Low | 06:17:04 - 06:47:04 | 7183 |
| DCO | 06:31:59 | -29.7 | Dark | Down | 26.6 | 141.6 | Low | 06:16:59 - 06:46:59 | 7178 |
| Kingman/Dolan Springs | 06:32:01 | -29.4 | Dark | Down | 26.1 | 140.8 | Low | 06:17:01 - 06:47:01 | 7174 |
| Laughlin/Bullhead City | 06:32:03 | -29.3 | Dark | Down | 25.8 | 140.4 | Low | 06:17:03 - 06:47:03 | 7167 |
| Mohave Valley | 06:32:03 | -29.6 | Dark | Down | 26.1 | 140.3 | Low | 06:17:03 - 06:47:03 | 7149 |
| Lake Havasu City | 06:32:03 | -30.0 | Dark | Down | 26.5 | 140.4 | Low | 06:17:03 - 06:47:03 | 7125 |
| CPSLO | 06:32:22 | -27.5 | Dark | Down | 22.4 | 135.3 | Low | 06:17:22 - 06:47:22 | 7102 |
| Parker | 06:32:04 | -30.4 | Dark | Down | 26.8 | 140.3 | Low | 06:17:04 - 06:47:04 | 7102 |
| Blythe | 06:32:07 | -30.8 | Dark | Down | 27.0 | 139.9 | Low | 06:17:07 - 06:47:07 | 7063 |
| Wildwood | 06:32:18 | -29.2 | Dark | Down | 24.5 | 136.6 | Low | 06:17:18 - 06:47:18 | 7047 |
| Idyllwild | 06:32:13 | -30.1 | Dark | Down | 25.8 | 138.1 | Low | 06:17:13 - 06:47:13 | 7046 |
| Calipatria | 06:32:11 | -31.0 | Dark | Down | 26.9 | 138.9 | Low | 06:17:11 - 06:47:11 | 7018 |
| Yuma | 06:32:08 | -31.7 | Dark | Down | 27.7 | 139.6 | Low | 06:17:08 - 06:47:08 | 6998 |
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 10370, (2020/06/17 06:30UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 37.04 149 Nunki 18:55:15.9 -26:17:49 2.0 8.31 118 PPM 235542 19:08:16.7 -19:17:25 5.9 0.98 114 PPM 235484 19:06:02.0 -18:09:57 8.3 0.27 115 10370 19:06:32.5 -18:24:17 16.1 115 Positions are for J2000
Event circumstances last updated at 2019/06/07 23:52:22 UT
Marc W. Buie, Southwest Research Institute