Event between (10370) Hylonome and star GA0700:27274622 with event index number of 130775
Geocentric closest approach at 2018/07/15 04:59:04 UTC
J2000 position of star is 18:36:50.9 -18:55:14
Equinox of date position of star is 18:37:55.9 -18:54:14
Stellar brightness G=14.3,
use SENSEUP=64
Star is 136 degrees from the moon.
Moon is 7% illuminated.
TNO apparent brightness V=22.4
[RECON map]
TNO is 24.0 AU from the Sun
and 23.1 AU from the Earth.
The TNO is moving 22.4
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 1124 seconds.
The 1-sigma cross-track error in the shadow position is
4379 km.
The sky-plane scale is
16718.5 km/arcsec.
The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 5.1 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
Star training set for 10370, (2018/07/15 04:59UT) Object RA Dec mag sep mel Antares 16:30:32.8 -26:28:18 0.9 30.25 108 Nunki 18:56:24.8 -26:16:20 2.0 8.51 140 PPM 234652 18:32:31.5 -18:23:18 5.0 1.38 135 PPM 234780 18:37:38.2 -18:46:17 8.3 0.15 136 PPM 234789 18:38:00.8 -18:54:10 10.0 0.02 136 10370 18:37:56.3 -18:54:14 14.3 136 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
0.8 sigma about the mid-time.
The median site spacing is 16.4 km
RECON observability=0.4 and success probability=1.3%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Penticton | 05:00:16 | -8.1 | CT | Up | 16.3 | 149.8 | Really Low | 04:45:16 - 05:15:16 | 8804 |
| Oroville | 05:00:17 | -8.6 | CT | Up | 16.9 | 149.8 | Really Low | 04:45:17 - 05:15:17 | 8780 |
| Tonasket | 05:00:17 | -8.7 | CT | Up | 17.1 | 149.8 | Really Low | 04:45:17 - 05:15:17 | 8770 |
| Okanogan | 05:00:18 | -8.9 | CT | Up | 17.3 | 149.6 | Really Low | 04:45:18 - 05:15:18 | 8755 |
| Brewster | 05:00:19 | -9.0 | CT | Up | 17.5 | 149.4 | Really Low | 04:45:19 - 05:15:19 | 8742 |
| Manson/Chelan | 05:00:21 | -9.0 | CT | Up | 17.6 | 149.0 | Really Low | 04:45:21 - 05:15:21 | 8731 |
| Entiat | 05:00:21 | -9.1 | CT | Up | 17.7 | 148.9 | Really Low | 04:45:21 - 05:15:21 | 8721 |
| Wenatchee | 05:00:22 | -9.3 | CT | Up | 17.9 | 148.8 | Really Low | 04:45:22 - 05:15:22 | 8709 |
| Ellensburg | 05:00:24 | -9.5 | CT | Up | 18.2 | 148.5 | Really Low | 04:45:24 - 05:15:24 | 8689 |
| Yakima | 05:00:25 | -9.8 | CT | Up | 18.5 | 148.4 | Really Low | 04:45:25 - 05:15:25 | 8670 |
| Pasco | 05:00:21 | -10.7 | CT | Up | 19.3 | 149.7 | Really Low | 04:45:21 - 05:15:21 | 8664 |
| Toppenish/White Swan | 05:00:25 | -10.0 | CT | Up | 18.8 | 148.5 | Really Low | 04:45:25 - 05:15:25 | 8661 |
| PNWRO | 05:00:20 | -11.0 | CT | Up | 19.6 | 149.8 | Really Low | 04:45:20 - 05:15:20 | 8654 |
| George/Umatilla | 05:00:22 | -10.8 | CT | Up | 19.5 | 149.4 | Really Low | 04:45:22 - 05:15:22 | 8647 |
| Goldendale | 05:00:27 | -10.2 | CT | Up | 19.1 | 148.0 | Really Low | 04:45:27 - 05:15:27 | 8632 |
| The Dalles | 05:00:28 | -10.2 | CT | Up | 19.1 | 147.7 | Really Low | 04:45:28 - 05:15:28 | 8619 |
| Maupin | 05:00:29 | -10.6 | CT | Up | 19.5 | 147.7 | Really Low | 04:45:29 - 05:15:29 | 8600 |
| Madras/Culver | 05:00:30 | -10.9 | CT | Up | 20.0 | 147.6 | Really Low | 04:45:30 - 05:15:30 | 8573 |
| Redmond | 05:00:31 | -11.2 | CT | Up | 20.3 | 147.4 | Low | 04:45:31 - 05:15:31 | 8555 |
| Sisters | 05:00:32 | -10.9 | CT | Up | 20.1 | 147.1 | Low | 04:45:32 - 05:15:32 | 8553 |
| Bend | 05:00:32 | -11.2 | CT | Up | 20.4 | 147.3 | Low | 04:45:32 - 05:15:32 | 8543 |
| Oregon Observatory | 05:00:33 | -11.3 | CT | Up | 20.5 | 147.1 | Low | 04:45:33 - 05:15:33 | 8533 |
| La Pine/Gilchrist | 05:00:33 | -11.4 | CT | Up | 20.6 | 147.0 | Low | 04:45:33 - 05:15:33 | 8522 |
| North Lake | 05:00:33 | -12.0 | AT | Up | 21.2 | 147.5 | Low | 04:45:33 - 05:15:33 | 8504 |
| Paisley | 05:00:33 | -12.6 | AT | Up | 21.9 | 147.7 | Low | 04:45:33 - 05:15:33 | 8478 |
| Chiloquin | 05:00:37 | -12.0 | AT | Up | 21.4 | 146.5 | Low | 04:45:37 - 05:15:37 | 8461 |
| Lakeview | 05:00:33 | -13.1 | AT | Up | 22.4 | 147.8 | Low | 04:45:33 - 05:15:33 | 8453 |
| Klamath Falls | 05:00:37 | -12.3 | AT | Up | 21.8 | 146.5 | Low | 04:45:37 - 05:15:37 | 8444 |
| Tulelake | 05:00:37 | -12.7 | AT | Up | 22.1 | 146.7 | Low | 04:45:37 - 05:15:37 | 8432 |
| Cedarville | 05:00:33 | -13.6 | AT | Up | 23.0 | 147.8 | Low | 04:45:33 - 05:15:33 | 8419 |
| Niwot | 04:59:45 | -21.6 | Dark | Down | 29.0 | 162.2 | Low | 04:44:45 - 05:14:45 | 8399 |
| Fall River/Burney | 05:00:38 | -13.4 | AT | Up | 22.9 | 146.6 | Low | 04:45:38 - 05:15:38 | 8383 |
| Susanville | 05:00:37 | -14.2 | AT | Up | 23.7 | 147.1 | Low | 04:45:37 - 05:15:37 | 8353 |
| Gimple | 05:00:38 | -14.3 | AT | Up | 23.9 | 146.8 | Low | 04:45:38 - 05:15:38 | 8336 |
| Greenville | 05:00:39 | -14.2 | AT | Up | 23.8 | 146.8 | Low | 04:45:39 - 05:15:39 | 8336 |
| Quincy | 05:00:39 | -14.4 | AT | Up | 24.0 | 146.7 | Low | 04:45:39 - 05:15:39 | 8324 |
| Portola | 05:00:38 | -14.7 | AT | Up | 24.3 | 147.1 | Low | 04:45:38 - 05:15:38 | 8321 |
| Reno | 05:00:36 | -15.3 | AT | Up | 24.8 | 147.7 | Low | 04:45:36 - 05:15:36 | 8310 |
| Carson City | 05:00:37 | -15.5 | AT | Down | 25.1 | 147.6 | Low | 04:45:37 - 05:15:37 | 8290 |
| Yerington | 05:00:35 | -16.0 | AT | Down | 25.5 | 148.1 | Low | 04:45:35 - 05:15:35 | 8283 |
| Gardnerville | 05:00:37 | -15.7 | AT | Down | 25.4 | 147.6 | Low | 04:45:37 - 05:15:37 | 8276 |
| Hawthorne | 05:00:33 | -16.6 | AT | Down | 26.2 | 148.5 | Low | 04:45:33 - 05:15:33 | 8259 |
| Tonopah | 05:00:30 | -17.7 | AT | Down | 27.1 | 149.7 | Low | 04:45:30 - 05:15:30 | 8241 |
| Lee Vining | 05:00:37 | -16.8 | AT | Down | 26.4 | 147.9 | Low | 04:45:37 - 05:15:37 | 8222 |
| Bishop | 05:00:35 | -17.6 | AT | Down | 27.3 | 148.5 | Low | 04:45:35 - 05:15:35 | 8191 |
| Beatty | 05:00:30 | -18.8 | Dark | Down | 28.3 | 149.9 | Low | 04:45:30 - 05:15:30 | 8173 |
| Indian Springs | 05:00:27 | -19.6 | Dark | Down | 29.0 | 150.8 | Low | 04:45:27 - 05:15:27 | 8159 |
| Lone Pine | 05:00:35 | -18.3 | Dark | Down | 28.0 | 148.6 | Low | 04:45:35 - 05:15:35 | 8146 |
| Henderson | 05:00:26 | -20.4 | Dark | Down | 29.8 | 151.4 | Low | 04:45:26 - 05:15:26 | 8130 |
| Patrick | 05:00:22 | -21.5 | Dark | Down | 30.7 | 152.3 | Up | 04:45:22 - 05:15:22 | 8096 |
| Searchlight/Boulder City | 05:00:26 | -20.9 | Dark | Down | 30.3 | 151.3 | Up | 04:45:26 - 05:15:26 | 8094 |
| Kingman/Dolan Springs | 05:00:24 | -21.5 | Dark | Down | 30.9 | 152.1 | Up | 04:45:24 - 05:15:24 | 8081 |
| DCO | 05:00:20 | -22.1 | Dark | Down | 31.3 | 152.9 | Up | 04:45:20 - 05:15:20 | 8079 |
| Laughlin/Bullhead City | 05:00:26 | -21.3 | Dark | Down | 30.7 | 151.5 | Up | 04:45:26 - 05:15:26 | 8076 |
| Mohave Valley | 05:00:26 | -21.5 | Dark | Down | 30.9 | 151.5 | Up | 04:45:26 - 05:15:26 | 8059 |
| CPSLO | 05:00:47 | -17.8 | AT | Down | 28.0 | 145.8 | Low | 04:45:47 - 05:15:47 | 8044 |
| Lake Havasu City | 05:00:26 | -21.9 | Dark | Down | 31.4 | 151.6 | Up | 04:45:26 - 05:15:26 | 8034 |
| Parker | 05:00:26 | -22.2 | Dark | Down | 31.7 | 151.5 | Up | 04:45:26 - 05:15:26 | 8011 |
| Wildwood | 05:00:41 | -19.9 | Dark | Down | 29.9 | 147.3 | Low | 04:45:41 - 05:15:41 | 7981 |
| Blythe | 05:00:28 | -22.4 | Dark | Down | 32.0 | 151.1 | Up | 04:45:28 - 05:15:28 | 7975 |
| Idyllwild | 05:00:36 | -21.2 | Dark | Down | 31.1 | 149.0 | Up | 04:45:36 - 05:15:36 | 7970 |
| Calipatria | 05:00:32 | -22.3 | Dark | Down | 32.1 | 150.0 | Up | 04:45:32 - 05:15:32 | 7937 |
| Yuma | 05:00:30 | -23.1 | Dark | Down | 32.8 | 150.8 | Up | 04:45:30 - 05:15:30 | 7912 |
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, (2018/07/15 04:59UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 30.25 108 Nunki 18:55:15.9 -26:17:49 2.0 8.51 140 PPM 234652 18:31:26.3 -18:24:10 5.0 1.38 135 PPM 234780 18:36:32.9 -18:47:17 8.3 0.15 136 PPM 234789 18:36:55.5 -18:55:10 10.0 0.02 136 10370 18:36:50.9 -18:55:14 14.3 136 Positions are for J2000
Event circumstances last updated at 2018/06/05 16:14:58 UT
Marc W. Buie, Southwest Research Institute