Event between (487581) 15BE519 and star GA1000:03508106 with event index number of 357314
Geocentric closest approach at 2019/03/17 08:37:39 UTC
J2000 position of star is 11:19:39.0 +11:07:35
Equinox of date position of star is 11:20:38.7 +11:01:17
Stellar brightness G=13.6,
use SENSEUP=64
Star is 42 degrees from the moon.
Moon is 81% illuminated.
TNO apparent brightness V=22.2
[RECON map]
TNO is 47.2 AU from the Sun
and 46.3 AU from the Earth.
The TNO is moving 25.6
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 297 seconds.
The 1-sigma cross-track error in the shadow position is
5572 km.
The sky-plane scale is
33549.6 km/arcsec.
The TNO has an absolute magnitude Hv=5.5
Diameter=478.6 km assuming a 5% albedo -- 18.7 sec chord
Diameter=195.4 km assuming a 30% albedo -- 7.6 sec chord
Dynamical classification is SCATNEAR
Star training set for 487581, (2019/03/17 08:38UT) Object RA Dec mag sep mel Regulus 10:09:23.6 +11:52:21 1.3 17.48 25 Denebola 11:50:02.3 +14:27:53 2.1 7.95 48 PPM 128238 11:25:58.6 +11:19:28 5.8 1.34 43 PPM 128145 11:19:21.1 +11:52:44 6.8 0.92 41 PPM 128173 11:21:11.0 +11:05:41 10.0 0.15 42 487581 11:20:39.0 +11:01:16 13.6 42 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
3.0 sigma about the mid-time.
The median site spacing is 13.6 km
RECON observability=1.0 and success probability=4.8%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 08:38:11 | -41.0 | Dark | Up | 49.3 | 202.8 | Up | 08:23:11 - 08:53:11 | -3749 |
| Summerland | 08:38:12 | -41.1 | Dark | Up | 49.5 | 202.3 | Up | 08:23:12 - 08:53:12 | -3764 |
| Penticton | 08:38:11 | -41.4 | Dark | Up | 49.7 | 202.7 | Up | 08:23:11 - 08:53:11 | -3779 |
| Okanagan Falls | 08:38:11 | -41.6 | Dark | Up | 49.9 | 202.7 | Up | 08:23:11 - 08:53:11 | -3793 |
| Oliver | 08:38:10 | -41.8 | Dark | Up | 50.0 | 202.8 | Up | 08:23:10 - 08:53:10 | -3804 |
| Anarchist Mountain Observatory | 08:38:09 | -41.9 | Dark | Up | 50.1 | 203.2 | Up | 08:23:09 - 08:53:09 | -3809 |
| Oroville | 08:38:09 | -42.0 | Dark | Up | 50.2 | 203.1 | Up | 08:23:09 - 08:53:09 | -3817 |
| Tonasket | 08:38:10 | -42.2 | Dark | Up | 50.4 | 203.2 | Up | 08:23:10 - 08:53:10 | -3833 |
| Okanogan | 08:38:08 | -42.6 | Dark | Up | 50.8 | 203.2 | Up | 08:23:08 - 08:53:08 | -3861 |
| Brewster | 08:38:09 | -42.8 | Dark | Up | 51.1 | 203.0 | Up | 08:23:09 - 08:53:09 | -3888 |
| Niwot | 08:37:12 | -46.4 | Dark | Up | 51.4 | 229.4 | Up | 08:22:12 - 08:52:12 | -3908 |
| Manson/Chelan | 08:38:10 | -43.1 | Dark | Up | 51.4 | 202.5 | Up | 08:23:10 - 08:53:10 | -3915 |
| SwRI | 08:37:12 | -46.6 | Dark | Up | 51.5 | 229.4 | Up | 08:22:12 - 08:52:12 | -3919 |
| Entiat | 08:38:08 | -43.3 | Dark | Up | 51.6 | 202.5 | Up | 08:23:08 - 08:53:08 | -3933 |
| Wenatchee | 08:38:08 | -43.6 | Dark | Up | 51.9 | 202.5 | Up | 08:23:08 - 08:53:08 | -3955 |
| Ellensburg | 08:38:07 | -44.0 | Dark | Up | 52.3 | 202.4 | Up | 08:23:07 - 08:53:07 | -3992 |
| Pasco | 08:38:03 | -44.6 | Dark | Up | 52.6 | 204.9 | Up | 08:23:03 - 08:53:03 | -3996 |
| PNWRO | 08:38:02 | -44.8 | Dark | Up | 52.8 | 205.4 | Up | 08:23:02 - 08:53:02 | -4006 |
| Yakima | 08:38:08 | -44.4 | Dark | Up | 52.7 | 202.5 | Up | 08:23:08 - 08:53:08 | -4023 |
| George/Umatilla | 08:38:03 | -44.9 | Dark | Up | 53.0 | 204.8 | Up | 08:23:03 - 08:53:03 | -4028 |
| Toppenish/White Swan | 08:38:06 | -44.6 | Dark | Up | 52.8 | 202.9 | Up | 08:23:06 - 08:53:06 | -4032 |
| Goldendale | 08:38:06 | -45.2 | Dark | Up | 53.5 | 202.5 | Up | 08:23:06 - 08:53:06 | -4088 |
| The Dalles | 08:38:06 | -45.5 | Dark | Up | 53.8 | 202.0 | Up | 08:23:06 - 08:53:06 | -4118 |
| Maupin | 08:38:06 | -45.9 | Dark | Up | 54.1 | 202.4 | Up | 08:23:06 - 08:53:06 | -4146 |
| Madras/Culver | 08:38:05 | -46.4 | Dark | Up | 54.6 | 202.6 | Up | 08:23:05 - 08:53:05 | -4188 |
| Redmond | 08:38:04 | -46.8 | Dark | Up | 55.0 | 202.7 | Up | 08:23:04 - 08:53:04 | -4217 |
| Sisters | 08:38:05 | -46.8 | Dark | Up | 55.1 | 202.1 | Up | 08:23:05 - 08:53:05 | -4230 |
| Bend | 08:38:04 | -47.0 | Dark | Up | 55.2 | 202.6 | Up | 08:23:04 - 08:53:04 | -4239 |
| Oregon Observatory | 08:38:04 | -47.2 | Dark | Up | 55.4 | 202.5 | Up | 08:23:04 - 08:53:04 | -4257 |
| La Pine/Gilchrist | 08:38:03 | -47.4 | Dark | Up | 55.6 | 202.5 | Up | 08:23:03 - 08:53:03 | -4275 |
| North Lake | 08:38:01 | -47.8 | Dark | Up | 55.9 | 203.8 | Up | 08:23:01 - 08:53:01 | -4286 |
| Paisley | 08:37:58 | -48.3 | Dark | Up | 56.3 | 204.7 | Up | 08:22:58 - 08:52:58 | -4315 |
| Lakeview | 08:37:57 | -48.7 | Dark | Up | 56.7 | 205.3 | Up | 08:22:57 - 08:52:57 | -4347 |
| Chiloquin | 08:38:02 | -48.5 | Dark | Up | 56.8 | 202.6 | Up | 08:23:02 - 08:53:02 | -4374 |
| Cedarville | 08:37:54 | -49.4 | Dark | Up | 57.2 | 206.0 | Up | 08:22:54 - 08:52:54 | -4391 |
| Klamath Falls | 08:38:01 | -48.9 | Dark | Up | 57.1 | 202.9 | Up | 08:23:01 - 08:53:01 | -4398 |
| Tulelake | 08:37:59 | -49.1 | Dark | Up | 57.2 | 203.6 | Up | 08:22:59 - 08:52:59 | -4408 |
| Fall River/Burney | 08:37:57 | -50.0 | Dark | Up | 58.0 | 204.3 | Up | 08:22:57 - 08:52:57 | -4476 |
| Susanville | 08:37:54 | -50.5 | Dark | Up | 58.4 | 206.0 | Up | 08:22:54 - 08:52:54 | -4498 |
| Gimple | 08:37:54 | -50.8 | Dark | Up | 58.7 | 205.8 | Up | 08:22:54 - 08:52:54 | -4528 |
| Greenville | 08:37:54 | -50.8 | Dark | Up | 58.7 | 205.7 | Up | 08:22:54 - 08:52:54 | -4531 |
| Reno | 08:37:50 | -51.2 | Dark | Up | 58.9 | 208.1 | Up | 08:22:50 - 08:52:50 | -4534 |
| Portola | 08:37:52 | -51.1 | Dark | Up | 58.8 | 206.7 | Up | 08:22:52 - 08:52:52 | -4539 |
| Quincy | 08:37:54 | -51.0 | Dark | Up | 58.9 | 205.8 | Up | 08:22:54 - 08:52:54 | -4547 |
| Tonopah | 08:37:39 | -52.2 | Dark | Up | 59.1 | 213.8 | Up | 08:22:39 - 08:52:39 | -4548 |
| Yerington | 08:37:47 | -51.7 | Dark | Up | 59.1 | 209.7 | Up | 08:22:47 - 08:52:47 | -4552 |
| Carson City | 08:37:48 | -51.6 | Dark | Up | 59.2 | 208.4 | Up | 08:22:48 - 08:52:48 | -4562 |
| Hawthorne | 08:37:44 | -52.0 | Dark | Up | 59.3 | 211.0 | Up | 08:22:44 - 08:52:44 | -4568 |
| Gardnerville | 08:37:48 | -51.8 | Dark | Up | 59.4 | 208.7 | Up | 08:22:48 - 08:52:48 | -4580 |
| Indian Springs | 08:37:31 | -53.2 | Dark | Up | 59.6 | 217.8 | Up | 08:22:31 - 08:52:31 | -4604 |
| DCO | 08:37:21 | -53.8 | Dark | Up | 59.4 | 223.5 | Up | 08:22:21 - 08:52:21 | -4617 |
| Henderson | 08:37:27 | -53.5 | Dark | Up | 59.7 | 219.5 | Up | 08:22:27 - 08:52:27 | -4619 |
| Patrick | 08:37:23 | -53.8 | Dark | Up | 59.6 | 222.0 | Up | 08:22:23 - 08:52:23 | -4622 |
| Beatty | 08:37:34 | -53.2 | Dark | Up | 59.9 | 215.7 | Up | 08:22:34 - 08:52:34 | -4623 |
| Lee Vining | 08:37:44 | -52.7 | Dark | Up | 60.0 | 210.6 | Up | 08:22:44 - 08:52:44 | -4634 |
| Kingman/Dolan Springs | 08:37:24 | -54.1 | Dark | Up | 59.8 | 222.0 | Up | 08:22:24 - 08:52:24 | -4648 |
| Bishop | 08:37:41 | -53.1 | Dark | Up | 60.2 | 212.4 | Up | 08:22:41 - 08:52:41 | -4653 |
| Searchlight/Boulder City | 08:37:26 | -54.1 | Dark | Up | 60.1 | 220.2 | Up | 08:22:26 - 08:52:26 | -4663 |
| Laughlin/Bullhead City | 08:37:25 | -54.2 | Dark | Up | 60.1 | 221.1 | Up | 08:22:25 - 08:52:25 | -4672 |
| Mohave Valley | 08:37:24 | -54.5 | Dark | Up | 60.3 | 221.5 | Up | 08:22:24 - 08:52:24 | -4694 |
| Lone Pine | 08:37:37 | -53.8 | Dark | Up | 60.7 | 213.7 | Up | 08:22:37 - 08:52:37 | -4701 |
| Lake Havasu City | 08:37:21 | -54.8 | Dark | Up | 60.5 | 222.3 | Up | 08:22:21 - 08:52:21 | -4716 |
| Parker | 08:37:22 | -55.1 | Dark | Up | 60.7 | 222.8 | Up | 08:22:22 - 08:52:22 | -4744 |
| Blythe | 08:37:21 | -55.7 | Dark | Up | 61.3 | 222.9 | Up | 08:22:21 - 08:52:21 | -4800 |
| Yuma | 08:37:18 | -56.6 | Dark | Up | 62.0 | 224.0 | Up | 08:22:18 - 08:52:18 | -4879 |
| Calipatria | 08:37:23 | -56.4 | Dark | Up | 62.2 | 222.0 | Up | 08:22:23 - 08:52:23 | -4882 |
| Idyllwild | 08:37:27 | -56.2 | Dark | Up | 62.4 | 219.2 | Up | 08:22:27 - 08:52:27 | -4882 |
| CPSLO | 08:37:44 | -55.5 | Dark | Up | 62.9 | 210.2 | Up | 08:22:44 - 08:52:44 | -4918 |
| Wildwood | 08:37:34 | -56.3 | Dark | Up | 63.0 | 215.3 | Up | 08:22:34 - 08:52:34 | -4933 |
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 487581, (2019/03/17 08:38UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 17.48 25 Denebola 11:49:02.9 +14:34:17 2.1 7.95 48 PPM 128238 11:24:58.8 +11:25:49 5.8 1.34 43 PPM 128145 11:18:21.1 +11:59:03 6.8 0.92 41 PPM 128173 11:20:11.1 +11:12:00 10.0 0.15 42 487581 11:19:39.0 +11:07:35 13.6 42 Positions are for J2000
Event circumstances last updated at 2019/02/12 06:49:39 UT
Marc W. Buie, Southwest Research Institute