Event between (469509) 03HC57 and star GA0740:05170998 with event index number of 190785
Geocentric closest approach at 2019/05/14 10:23:39 UTC
J2000 position of star is 14:21:23.5 -14:23:14
Equinox of date position of star is 14:22:24.9 -14:28:20
Stellar brightness G=16.3,
use SENSEUP=128
Star is 43 degrees from the moon.
Moon is 76% illuminated.
TNO apparent brightness V=22.1
[RECON map]
TNO is 42.5 AU from the Sun
and 41.5 AU from the Earth.
The TNO is moving 23.9
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 183 seconds.
The 1-sigma cross-track error in the shadow position is
2304 km.
The sky-plane scale is
30093.4 km/arcsec.
The TNO has an absolute magnitude Hv=5.8
Diameter=416.9 km assuming a 5% albedo -- 17.5 sec chord
Diameter=170.2 km assuming a 30% albedo -- 7.1 sec chord
Dynamical classification is CLASSICAL
Star training set for 469509, (2019/05/14 10:24UT) Object RA Dec mag sep mel Spica 13:26:13.0 -11:15:43 1.0 14.07 30 2 Lib 14:24:28.3 -11:48:06 6.2 2.72 42 PPM 228623 14:20:18.2 -14:29:47 7.3 0.52 43 PPM 228668 14:22:35.7 -14:21:30 9.4 0.12 43 469509 14:22:26.9 -14:28:30 16.3 43 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
4.9 sigma about the mid-time.
The median site spacing is 0.0 km
RECON observability=0.0 and success probability=0.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Rutland | 10:22:43 | -14.0 | AT | Up | 10.8 | 231.8 | Really Low | 10:07:43 - 10:37:43 | 8970 |
| Penticton | 10:22:42 | -14.4 | AT | Up | 11.1 | 231.7 | Really Low | 10:07:42 - 10:37:42 | 8958 |
| Okanagan Falls | 10:22:42 | -14.5 | AT | Up | 11.2 | 231.7 | Really Low | 10:07:42 - 10:37:42 | 8952 |
| Southern Okanagan | 10:22:41 | -14.7 | AT | Up | 11.3 | 231.7 | Really Low | 10:07:41 - 10:37:41 | 8947 |
| Oroville | 10:22:41 | -14.8 | AT | Up | 11.4 | 231.9 | Really Low | 10:07:41 - 10:37:41 | 8939 |
| Tonasket | 10:22:40 | -15.0 | AT | Up | 11.5 | 231.9 | Really Low | 10:07:40 - 10:37:40 | 8931 |
| Okanogan | 10:22:39 | -15.3 | AT | Up | 11.8 | 231.8 | Really Low | 10:07:39 - 10:37:39 | 8920 |
| Brewster | 10:22:38 | -15.6 | AT | Up | 12.1 | 231.7 | Really Low | 10:07:38 - 10:37:38 | 8910 |
| Manson/Chelan | 10:22:37 | -15.9 | AT | Up | 12.4 | 231.4 | Really Low | 10:07:37 - 10:37:37 | 8903 |
| Entiat | 10:22:36 | -16.2 | AT | Up | 12.6 | 231.4 | Really Low | 10:07:36 - 10:37:36 | 8895 |
| Wenatchee | 10:22:38 | -16.4 | AT | Up | 12.8 | 231.4 | Really Low | 10:07:38 - 10:37:38 | 8886 |
| Ellensburg | 10:22:36 | -16.8 | AT | Up | 13.2 | 231.3 | Really Low | 10:07:36 - 10:37:36 | 8870 |
| Yakima | 10:22:35 | -17.2 | AT | Up | 13.5 | 231.3 | Really Low | 10:07:35 - 10:37:35 | 8855 |
| Toppenish/White Swan | 10:22:33 | -17.3 | AT | Up | 13.5 | 231.5 | Really Low | 10:07:33 - 10:37:33 | 8847 |
| Pasco | 10:22:30 | -16.9 | AT | Up | 12.9 | 232.6 | Really Low | 10:07:30 - 10:37:30 | 8844 |
| PNWRO | 10:22:29 | -17.0 | AT | Up | 12.9 | 232.8 | Really Low | 10:07:29 - 10:37:29 | 8835 |
| George/Umatilla | 10:22:30 | -17.2 | AT | Up | 13.2 | 232.4 | Really Low | 10:07:30 - 10:37:30 | 8831 |
| Goldendale | 10:22:32 | -17.9 | AT | Up | 14.1 | 231.2 | Really Low | 10:07:32 - 10:37:32 | 8826 |
| The Dalles | 10:22:32 | -18.2 | Dark | Up | 14.4 | 231.0 | Really Low | 10:07:32 - 10:37:32 | 8816 |
| Maupin | 10:22:31 | -18.5 | Dark | Up | 14.6 | 231.2 | Really Low | 10:07:31 - 10:37:31 | 8800 |
| Madras/Culver | 10:22:29 | -19.0 | Dark | Up | 15.0 | 231.2 | Really Low | 10:07:29 - 10:37:29 | 8778 |
| Sisters | 10:22:28 | -19.5 | Dark | Up | 15.5 | 230.9 | Really Low | 10:07:28 - 10:37:28 | 8763 |
| Redmond | 10:22:29 | -19.3 | Dark | Up | 15.3 | 231.3 | Really Low | 10:07:29 - 10:37:29 | 8763 |
| Bend | 10:22:29 | -19.5 | Dark | Up | 15.5 | 231.2 | Really Low | 10:07:29 - 10:37:29 | 8754 |
| Oregon Observatory | 10:22:27 | -19.7 | Dark | Up | 15.7 | 231.1 | Really Low | 10:07:27 - 10:37:27 | 8746 |
| La Pine/Gilchrist | 10:22:26 | -19.9 | Dark | Up | 15.8 | 231.1 | Really Low | 10:07:26 - 10:37:26 | 8737 |
| North Lake | 10:22:25 | -20.0 | Dark | Up | 15.8 | 231.7 | Really Low | 10:07:25 - 10:37:25 | 8720 |
| Paisley | 10:22:22 | -20.3 | Dark | Up | 15.9 | 232.1 | Really Low | 10:07:22 - 10:37:22 | 8696 |
| Chiloquin | 10:22:25 | -21.0 | Dark | Up | 16.7 | 231.1 | Really Low | 10:07:25 - 10:37:25 | 8688 |
| Lakeview | 10:22:19 | -20.7 | Dark | Up | 16.1 | 232.4 | Really Low | 10:07:19 - 10:37:19 | 8674 |
| Klamath Falls | 10:22:23 | -21.2 | Dark | Up | 16.9 | 231.2 | Really Low | 10:07:23 - 10:37:23 | 8673 |
| Tulelake | 10:22:22 | -21.3 | Dark | Up | 16.9 | 231.5 | Really Low | 10:07:22 - 10:37:22 | 8661 |
| Cedarville | 10:22:17 | -21.1 | Dark | Up | 16.4 | 232.6 | Really Low | 10:07:17 - 10:37:17 | 8644 |
| Fall River/Burney | 10:22:18 | -22.0 | Dark | Up | 17.4 | 231.8 | Really Low | 10:07:18 - 10:37:18 | 8619 |
| Susanville | 10:22:14 | -22.2 | Dark | Up | 17.4 | 232.5 | Really Low | 10:07:14 - 10:37:14 | 8591 |
| Gimple | 10:22:14 | -22.5 | Dark | Up | 17.7 | 232.4 | Really Low | 10:07:14 - 10:37:14 | 8577 |
| Greenville | 10:22:15 | -22.6 | Dark | Up | 17.7 | 232.4 | Really Low | 10:07:15 - 10:37:15 | 8577 |
| Quincy | 10:22:15 | -22.7 | Dark | Up | 17.8 | 232.4 | Really Low | 10:07:15 - 10:37:15 | 8567 |
| Portola | 10:22:12 | -22.6 | Dark | Up | 17.6 | 232.8 | Really Low | 10:07:12 - 10:37:12 | 8561 |
| Reno | 10:22:10 | -22.5 | Dark | Up | 17.4 | 233.4 | Really Low | 10:07:10 - 10:37:10 | 8549 |
| Niwot | 10:21:43 | -14.4 | AT | Down | 7.6 | 243.9 | Really Low | 10:06:43 - 10:36:43 | 8533 |
| Carson City | 10:22:08 | -22.8 | Dark | Up | 17.6 | 233.5 | Really Low | 10:07:08 - 10:37:08 | 8531 |
| Yerington | 10:22:07 | -22.7 | Dark | Up | 17.3 | 234.0 | Really Low | 10:07:07 - 10:37:07 | 8522 |
| Gardnerville | 10:22:07 | -23.0 | Dark | Up | 17.7 | 233.6 | Really Low | 10:07:07 - 10:37:07 | 8519 |
| Hawthorne | 10:22:04 | -22.8 | Dark | Up | 17.3 | 234.5 | Really Low | 10:07:04 - 10:37:04 | 8499 |
| Tonopah | 10:21:59 | -22.4 | Dark | Up | 16.6 | 235.7 | Really Low | 10:06:59 - 10:36:59 | 8475 |
| Lee Vining | 10:22:03 | -23.5 | Dark | Up | 17.9 | 234.3 | Really Low | 10:07:03 - 10:37:03 | 8469 |
| Bishop | 10:22:00 | -23.6 | Dark | Up | 17.8 | 235.0 | Really Low | 10:07:00 - 10:37:00 | 8438 |
| Beatty | 10:21:56 | -23.1 | Dark | Up | 17.0 | 236.3 | Really Low | 10:06:56 - 10:36:56 | 8413 |
| Lone Pine | 10:21:56 | -24.0 | Dark | Up | 18.0 | 235.4 | Really Low | 10:06:56 - 10:36:56 | 8397 |
| Indian Springs | 10:21:51 | -22.8 | Dark | Up | 16.5 | 237.2 | Really Low | 10:06:51 - 10:36:51 | 8394 |
| Henderson | 10:21:48 | -22.8 | Dark | Down | 16.3 | 237.8 | Really Low | 10:06:48 - 10:36:48 | 8364 |
| Searchlight/Boulder City | 10:21:46 | -23.2 | Dark | Down | 16.6 | 238.0 | Really Low | 10:06:46 - 10:36:46 | 8332 |
| Patrick | 10:21:45 | -22.6 | Dark | Down | 15.9 | 238.7 | Really Low | 10:06:45 - 10:36:45 | 8327 |
| CPSLO | 10:21:59 | -26.3 | Dark | Up | 20.5 | 233.9 | Low | 10:06:59 - 10:36:59 | 8321 |
| Kingman/Dolan Springs | 10:21:42 | -22.9 | Dark | Down | 16.1 | 238.7 | Really Low | 10:06:42 - 10:36:42 | 8314 |
| Laughlin/Bullhead City | 10:21:44 | -23.2 | Dark | Down | 16.5 | 238.3 | Really Low | 10:06:44 - 10:36:44 | 8314 |
| DCO | 10:21:40 | -22.4 | Dark | Down | 15.5 | 239.3 | Really Low | 10:06:40 - 10:36:40 | 8307 |
| Mohave Valley | 10:21:45 | -23.4 | Dark | Down | 16.6 | 238.4 | Really Low | 10:06:45 - 10:36:45 | 8298 |
| Lake Havasu City | 10:21:41 | -23.6 | Dark | Down | 16.7 | 238.6 | Really Low | 10:06:41 - 10:36:41 | 8275 |
| Parker | 10:21:41 | -23.8 | Dark | Down | 16.8 | 238.8 | Really Low | 10:06:41 - 10:36:41 | 8254 |
| Wildwood | 10:21:50 | -26.2 | Dark | Up | 19.8 | 235.7 | Really Low | 10:06:50 - 10:36:50 | 8254 |
| Idyllwild | 10:21:45 | -25.4 | Dark | Up | 18.7 | 237.2 | Really Low | 10:06:45 - 10:36:45 | 8233 |
| Blythe | 10:21:40 | -24.3 | Dark | Down | 17.3 | 238.7 | Really Low | 10:06:40 - 10:36:40 | 8224 |
| Calipatria | 10:21:40 | -25.2 | Dark | Down | 18.2 | 238.2 | Really Low | 10:06:40 - 10:36:40 | 8196 |
| Yuma | 10:21:37 | -25.0 | Dark | Down | 17.8 | 238.9 | Really Low | 10:06:37 - 10:36:37 | 8168 |
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 469509, (2019/05/14 10:24UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 14.07 30 2 Lib 14:23:25.6 -11:42:52 6.2 2.72 42 PPM 228623 14:19:14.9 -14:24:29 7.3 0.52 43 PPM 228668 14:21:32.3 -14:16:14 9.4 0.12 43 469509 14:21:23.5 -14:23:14 16.3 43 Positions are for J2000
Event circumstances last updated at 2018/10/04 19:07:15 UT
Marc W. Buie, Southwest Research Institute