Event between (38628) Huya and star GA0820:05176814 with event index number of 204277
Geocentric closest approach at 2019/07/08 09:07:41 UTC
J2000 position of star is 16:31:56.9 -06:04:25
Equinox of date position of star is 16:32:59.2 -06:06:51
Stellar brightness G=12.7,
use SENSEUP=16
Star is 65 degrees from the moon.
Moon is 38% illuminated.
TNO apparent brightness V=19.5
[RECON map]
TNO is 28.7 AU from the Sun
and 27.9 AU from the Earth.
The TNO is moving 17.3
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 98 seconds.
The 1-sigma cross-track error in the shadow position is
1022 km.
The sky-plane scale is
20229.7 km/arcsec.
The TNO has an absolute magnitude Hv=4.8
Diameter=660.7 km assuming a 5% albedo -- 38.3 sec chord
Diameter=269.7 km assuming a 30% albedo -- 15.6 sec chord
Dynamical classification is 3:2E+6:4II
Star training set for 38628, (2019/07/08 09:08UT) Object RA Dec mag sep mel Antares 16:30:36.4 -26:28:25 0.9 20.37 69 13Zet Oph 16:38:14.1 -10:36:19 2.6 4.67 67 PPM 199844 16:39:04.4 -06:34:34 6.4 1.58 67 PPM 199789 16:35:30.9 -06:10:32 8.4 0.63 66 PPM 199743 16:33:02.1 -06:12:18 9.5 0.09 65 38628 16:32:59.5 -06:06:51 12.7 65 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 21.6 km
RECON observability=0.7 and success probability=23.6%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 09:03:55 | -16.3 | AT | Down | 16.8 | 237.9 | Really Low | 08:55:16 - 09:12:34 | 2096 |
| Summerland | 09:03:55 | -16.7 | AT | Down | 17.2 | 237.7 | Really Low | 08:55:16 - 09:12:34 | 2077 |
| Penticton | 09:03:54 | -16.7 | AT | Down | 17.1 | 237.9 | Really Low | 08:55:15 - 09:12:33 | 2071 |
| Okanagan Falls | 09:03:54 | -16.9 | AT | Down | 17.2 | 237.9 | Really Low | 08:55:15 - 09:12:33 | 2057 |
| Oliver | 09:03:53 | -17.1 | AT | Down | 17.3 | 237.9 | Really Low | 08:55:14 - 09:12:32 | 2045 |
| Anarchist Mountain Observatory | 09:03:52 | -17.2 | AT | Down | 17.3 | 238.2 | Really Low | 08:55:13 - 09:12:31 | 2030 |
| Oroville | 09:03:52 | -17.3 | AT | Down | 17.4 | 238.1 | Really Low | 08:55:13 - 09:12:31 | 2025 |
| Tonasket | 09:03:51 | -17.5 | AT | Down | 17.5 | 238.2 | Really Low | 08:55:12 - 09:12:30 | 2008 |
| Okanogan | 09:03:51 | -17.9 | AT | Down | 17.8 | 238.1 | Really Low | 08:55:12 - 09:12:30 | 1984 |
| Brewster | 09:03:50 | -18.2 | Dark | Down | 18.0 | 238.0 | Really Low | 08:55:11 - 09:12:29 | 1966 |
| Manson/Chelan | 09:03:50 | -18.4 | Dark | Down | 18.4 | 237.8 | Really Low | 08:55:11 - 09:12:29 | 1954 |
| Entiat | 09:03:50 | -18.7 | Dark | Down | 18.5 | 237.8 | Really Low | 08:55:11 - 09:12:29 | 1938 |
| Wenatchee | 09:03:49 | -18.9 | Dark | Down | 18.7 | 237.8 | Really Low | 08:55:10 - 09:12:28 | 1920 |
| Ellensburg | 09:03:48 | -19.4 | Dark | Down | 19.1 | 237.7 | Really Low | 08:55:09 - 09:12:27 | 1891 |
| Yakima | 09:03:47 | -19.8 | Dark | Down | 19.3 | 237.8 | Really Low | 08:55:08 - 09:12:26 | 1859 |
| Toppenish/White Swan | 09:03:46 | -19.9 | Dark | Down | 19.3 | 238.0 | Really Low | 08:55:07 - 09:12:25 | 1841 |
| Pasco | 09:03:42 | -19.8 | Dark | Down | 18.6 | 239.1 | Really Low | 08:55:03 - 09:12:21 | 1816 |
| Goldendale | 09:03:45 | -20.5 | Dark | Down | 19.9 | 237.8 | Really Low | 08:55:06 - 09:12:24 | 1802 |
| PNWRO | 09:03:41 | -20.0 | Dark | Down | 18.6 | 239.4 | Really Low | 08:55:02 - 09:12:20 | 1794 |
| George/Umatilla | 09:03:42 | -20.2 | Dark | Down | 18.9 | 239.0 | Really Low | 08:55:03 - 09:12:21 | 1793 |
| The Dalles | 09:03:45 | -20.8 | Dark | Down | 20.2 | 237.6 | Low | 08:55:06 - 09:12:24 | 1789 |
| Maupin | 09:03:44 | -21.2 | Dark | Down | 20.4 | 237.8 | Low | 08:55:05 - 09:12:23 | 1755 |
| Madras/Culver | 09:03:43 | -21.8 | Dark | Down | 20.7 | 237.9 | Low | 08:55:04 - 09:12:22 | 1712 |
| Sisters | 09:03:43 | -22.2 | Dark | Down | 21.1 | 237.6 | Low | 08:55:04 - 09:12:22 | 1690 |
| Redmond | 09:03:41 | -22.1 | Dark | Down | 20.9 | 238.0 | Low | 08:55:02 - 09:12:20 | 1683 |
| Bend | 09:03:42 | -22.3 | Dark | Down | 21.1 | 237.9 | Low | 08:55:03 - 09:12:21 | 1668 |
| Oregon Observatory | 09:03:41 | -22.5 | Dark | Down | 21.3 | 237.9 | Low | 08:55:02 - 09:12:20 | 1655 |
| La Pine/Gilchrist | 09:03:41 | -22.7 | Dark | Down | 21.4 | 237.9 | Low | 08:55:02 - 09:12:20 | 1640 |
| North Lake | 09:03:38 | -23.1 | Dark | Down | 21.3 | 238.5 | Low | 08:54:59 - 09:12:17 | 1597 |
| Chiloquin | 09:03:38 | -23.9 | Dark | Down | 22.2 | 238.0 | Low | 08:54:59 - 09:12:17 | 1553 |
| Paisley | 09:03:35 | -23.5 | Dark | Down | 21.3 | 239.0 | Low | 08:54:56 - 09:12:14 | 1547 |
| Klamath Falls | 09:03:37 | -24.2 | Dark | Down | 22.4 | 238.1 | Low | 08:54:58 - 09:12:16 | 1524 |
| Lakeview | 09:03:33 | -24.0 | Dark | Down | 21.5 | 239.3 | Low | 08:54:54 - 09:12:12 | 1502 |
| Tulelake | 09:03:35 | -24.4 | Dark | Down | 22.3 | 238.5 | Low | 08:54:56 - 09:12:14 | 1497 |
| Cedarville | 09:03:31 | -24.6 | Dark | Down | 21.7 | 239.7 | Low | 08:54:52 - 09:12:10 | 1445 |
| Fall River/Burney | 09:03:33 | -25.3 | Dark | Down | 22.7 | 238.9 | Low | 08:54:54 - 09:12:12 | 1420 |
| Susanville | 09:03:29 | -25.8 | Dark | Down | 22.6 | 239.7 | Low | 08:54:50 - 09:12:08 | 1357 |
| Greenville | 09:03:29 | -26.1 | Dark | Down | 22.9 | 239.5 | Low | 08:54:50 - 09:12:08 | 1337 |
| Gimple | 09:03:29 | -26.1 | Dark | Down | 22.9 | 239.6 | Low | 08:54:50 - 09:12:08 | 1336 |
| Quincy | 09:03:28 | -26.3 | Dark | Down | 23.0 | 239.6 | Low | 08:54:49 - 09:12:07 | 1320 |
| Portola | 09:03:27 | -26.3 | Dark | Down | 22.8 | 240.0 | Low | 08:54:48 - 09:12:06 | 1303 |
| Reno | 09:03:24 | -26.5 | Dark | Down | 22.5 | 240.6 | Low | 08:54:45 - 09:12:03 | 1272 |
| Carson City | 09:03:23 | -26.8 | Dark | Down | 22.7 | 240.8 | Low | 08:54:44 - 09:12:02 | 1240 |
| Gardnerville | 09:03:22 | -27.0 | Dark | Down | 22.7 | 240.9 | Low | 08:54:43 - 09:12:01 | 1218 |
| Yerington | 09:03:21 | -26.9 | Dark | Down | 22.3 | 241.3 | Low | 08:54:42 - 09:12:00 | 1215 |
| Hawthorne | 09:03:18 | -27.2 | Dark | Down | 22.2 | 241.9 | Low | 08:54:39 - 09:11:57 | 1167 |
| Niwot | 09:02:52 | -21.7 | Dark | Down | 12.1 | 251.2 | Really Low | 08:54:13 - 09:11:31 | 1138 |
| SwRI | 09:02:52 | -21.8 | Dark | Down | 12.2 | 251.2 | Really Low | 08:54:13 - 09:11:31 | 1130 |
| Lee Vining | 09:03:18 | -27.8 | Dark | Down | 22.8 | 241.7 | Low | 08:54:39 - 09:11:57 | 1124 |
| Tonopah | 09:03:13 | -27.3 | Dark | Down | 21.4 | 243.1 | Low | 08:54:34 - 09:11:52 | 1107 |
| Bishop | 09:03:14 | -28.2 | Dark | Down | 22.6 | 242.5 | Low | 08:54:35 - 09:11:53 | 1061 |
| Beatty | 09:03:08 | -28.3 | Dark | Down | 21.6 | 243.9 | Low | 08:54:29 - 09:11:47 | 998 |
| Lone Pine | 09:03:11 | -28.9 | Dark | Down | 22.7 | 243.0 | Low | 08:54:32 - 09:11:50 | 988 |
| Indian Springs | 09:03:05 | -28.3 | Dark | Down | 21.0 | 244.8 | Low | 08:54:26 - 09:11:44 | 954 |
| CPSLO | 09:03:16 | -30.7 | Dark | Down | 25.1 | 241.6 | Low | 08:54:37 - 09:11:55 | 906 |
| Henderson | 09:03:01 | -28.6 | Dark | Down | 20.7 | 245.5 | Low | 08:54:22 - 09:11:40 | 896 |
| Searchlight/Boulder City | 09:03:00 | -29.2 | Dark | Down | 20.9 | 245.7 | Low | 08:54:21 - 09:11:39 | 843 |
| Patrick | 09:02:57 | -28.9 | Dark | Down | 20.2 | 246.5 | Low | 08:54:18 - 09:11:36 | 824 |
| Laughlin/Bullhead City | 09:02:58 | -29.3 | Dark | Down | 20.8 | 246.0 | Low | 08:54:19 - 09:11:37 | 811 |
| Kingman/Dolan Springs | 09:02:57 | -29.2 | Dark | Down | 20.4 | 246.4 | Low | 08:54:18 - 09:11:36 | 806 |
| DCO | 09:02:54 | -29.0 | Dark | Down | 19.8 | 247.0 | Really Low | 08:54:15 - 09:11:33 | 786 |
| Mohave Valley | 09:02:57 | -29.6 | Dark | Down | 20.9 | 246.1 | Low | 08:54:18 - 09:11:36 | 785 |
| Wildwood | 09:03:07 | -31.4 | Dark | Down | 24.2 | 243.6 | Low | 08:54:28 - 09:11:46 | 767 |
| Lake Havasu City | 09:02:55 | -29.9 | Dark | Down | 20.9 | 246.4 | Low | 08:54:16 - 09:11:34 | 745 |
| Parker | 09:02:55 | -30.2 | Dark | Down | 21.0 | 246.6 | Low | 08:54:16 - 09:11:34 | 712 |
| Idyllwild | 09:03:00 | -31.3 | Dark | Down | 23.0 | 245.1 | Low | 08:54:21 - 09:11:39 | 707 |
| Blythe | 09:02:54 | -30.8 | Dark | Down | 21.4 | 246.6 | Low | 08:54:15 - 09:11:33 | 667 |
| Calipatria | 09:02:56 | -31.5 | Dark | Down | 22.4 | 246.1 | Low | 08:54:17 - 09:11:35 | 633 |
| Yuma | 09:02:52 | -31.7 | Dark | Down | 21.8 | 246.9 | Low | 08:54:13 - 09:11:31 | 580 |
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 38628, (2019/07/08 09:08UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 20.37 69 13Zet Oph 16:37:09.6 -10:34:01 2.6 4.67 67 PPM 199844 16:38:01.6 -06:32:17 6.4 1.58 67 PPM 199789 16:34:28.3 -06:08:11 8.4 0.63 66 PPM 199743 16:31:59.4 -06:09:53 9.5 0.09 65 38628 16:31:56.9 -06:04:25 12.7 65 Positions are for J2000
Event circumstances last updated at 2019/06/10 22:55:20 UT
Marc W. Buie, Southwest Research Institute