Event between (535994) 15BH519 and star GA0760:04720975 with event index number of 1619793
Geocentric closest approach at 2020/05/05 07:51:26 UTC
J2000 position of star is 12:55:53.6 -12:22:22
Equinox of date position of star is 12:56:55.0 -12:28:41
Stellar brightness G=15.4,
use SENSEUP=128
Star is 11 degrees from the moon.
Moon is 93% illuminated.
TNO apparent brightness V=22.3
[RECON map]
TNO is 39.5 AU from the Sun
and 38.6 AU from the Earth.
The TNO is moving 21.8
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 143 seconds.
The 1-sigma cross-track error in the shadow position is
3492 km.
The sky-plane scale is
28021.1 km/arcsec.
The TNO has an absolute magnitude Hv=6.3
Diameter=331.1 km assuming a 5% albedo -- 15.2 sec chord
Diameter=135.2 km assuming a 30% albedo -- 6.2 sec chord
Dynamical classification is SCATNEAR
Star training set for 535994, (2020/05/05 07:51UT) Object RA Dec mag sep mel Spica 13:26:16.1 -11:16:01 1.0 7.27 11 40Psi Vir 12:55:24.8 -09:38:57 4.8 2.86 8 PPM 226581 12:58:16.6 -12:10:36 6.6 0.44 11 PPM 226542 12:56:45.8 -12:09:33 9.1 0.33 11 535994 12:56:57.6 -12:28:58 15.4 11 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 10.6 km
RECON observability=1.0 and success probability=4.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 07:51:30 | -23.7 | Dark | Up | 23.0 | 210.1 | Low | 07:39:07 - 08:03:53 | 5238 |
| Summerland | 07:51:30 | -24.0 | Dark | Up | 23.4 | 209.8 | Low | 07:39:07 - 08:03:53 | 5223 |
| Penticton | 07:51:29 | -24.0 | Dark | Up | 23.4 | 210.0 | Low | 07:39:06 - 08:03:52 | 5222 |
| Okanagan Falls | 07:51:28 | -24.2 | Dark | Up | 23.5 | 210.0 | Low | 07:39:05 - 08:03:51 | 5215 |
| Oliver | 07:51:29 | -24.4 | Dark | Up | 23.7 | 210.0 | Low | 07:39:06 - 08:03:52 | 5209 |
| Anarchist Mountain Observatory | 07:51:27 | -24.6 | Dark | Up | 23.8 | 210.3 | Low | 07:39:04 - 08:03:50 | 5205 |
| Oroville | 07:51:28 | -24.6 | Dark | Up | 23.9 | 210.2 | Low | 07:39:05 - 08:03:51 | 5201 |
| Tonasket | 07:51:27 | -24.9 | Dark | Up | 24.1 | 210.3 | Low | 07:39:04 - 08:03:50 | 5192 |
| Okanogan | 07:51:26 | -25.2 | Dark | Up | 24.4 | 210.2 | Low | 07:39:03 - 08:03:49 | 5176 |
| Brewster | 07:51:26 | -25.5 | Dark | Up | 24.7 | 210.0 | Low | 07:39:03 - 08:03:49 | 5163 |
| Manson/Chelan | 07:51:27 | -25.7 | Dark | Up | 25.0 | 209.7 | Low | 07:39:04 - 08:03:50 | 5148 |
| Wenatchee | 07:51:26 | -26.2 | Dark | Up | 25.5 | 209.7 | Low | 07:39:03 - 08:03:49 | 5126 |
| Ellensburg | 07:51:26 | -26.6 | Dark | Up | 25.9 | 209.5 | Low | 07:39:03 - 08:03:49 | 5105 |
| Pasco | 07:51:20 | -27.3 | Dark | Up | 26.1 | 211.1 | Low | 07:38:57 - 08:03:43 | 5096 |
| PNWRO | 07:51:17 | -27.6 | Dark | Up | 26.2 | 211.4 | Low | 07:38:54 - 08:03:40 | 5089 |
| Yakima | 07:51:24 | -27.0 | Dark | Up | 26.3 | 209.6 | Low | 07:39:01 - 08:03:47 | 5087 |
| Toppenish/White Swan | 07:51:24 | -27.2 | Dark | Up | 26.4 | 209.8 | Low | 07:39:01 - 08:03:47 | 5081 |
| George/Umatilla | 07:51:19 | -27.7 | Dark | Up | 26.4 | 211.0 | Low | 07:38:56 - 08:03:42 | 5078 |
| Goldendale | 07:51:24 | -27.7 | Dark | Up | 27.0 | 209.5 | Low | 07:39:01 - 08:03:47 | 5049 |
| The Dalles | 07:51:24 | -27.9 | Dark | Up | 27.3 | 209.2 | Low | 07:39:01 - 08:03:47 | 5033 |
| Maupin | 07:51:23 | -28.4 | Dark | Up | 27.7 | 209.4 | Low | 07:39:00 - 08:03:46 | 5016 |
| Madras/Culver | 07:51:21 | -28.9 | Dark | Up | 28.2 | 209.5 | Low | 07:38:58 - 08:03:44 | 4990 |
| SwRI | 07:50:21 | -32.3 | Dark | Up | 24.7 | 226.0 | Low | 07:37:58 - 08:02:44 | 4984 |
| Redmond | 07:51:20 | -29.3 | Dark | Up | 28.5 | 209.5 | Low | 07:38:57 - 08:03:43 | 4972 |
| Sisters | 07:51:22 | -29.2 | Dark | Up | 28.6 | 209.1 | Low | 07:38:59 - 08:03:45 | 4967 |
| Bend | 07:51:20 | -29.5 | Dark | Up | 28.7 | 209.5 | Low | 07:38:57 - 08:03:43 | 4960 |
| Oregon Observatory | 07:51:21 | -29.6 | Dark | Up | 28.9 | 209.4 | Low | 07:38:58 - 08:03:44 | 4949 |
| La Pine/Gilchrist | 07:51:20 | -29.8 | Dark | Up | 29.1 | 209.4 | Low | 07:38:57 - 08:03:43 | 4938 |
| North Lake | 07:51:17 | -30.3 | Dark | Up | 29.3 | 210.1 | Low | 07:38:54 - 08:03:40 | 4928 |
| Paisley | 07:51:15 | -30.9 | Dark | Up | 29.6 | 210.6 | Low | 07:38:52 - 08:03:38 | 4907 |
| Lakeview | 07:51:12 | -31.4 | Dark | Up | 30.0 | 211.0 | Up | 07:38:49 - 08:03:35 | 4884 |
| Chiloquin | 07:51:19 | -30.9 | Dark | Up | 30.2 | 209.3 | Up | 07:38:56 - 08:03:42 | 4877 |
| Klamath Falls | 07:51:17 | -31.3 | Dark | Up | 30.5 | 209.5 | Up | 07:38:54 - 08:03:40 | 4861 |
| Cedarville | 07:51:11 | -32.0 | Dark | Up | 30.5 | 211.3 | Up | 07:38:48 - 08:03:34 | 4854 |
| Tulelake | 07:51:16 | -31.6 | Dark | Up | 30.6 | 209.9 | Up | 07:38:53 - 08:03:39 | 4853 |
| Fall River/Burney | 07:51:14 | -32.5 | Dark | Up | 31.4 | 210.2 | Up | 07:38:51 - 08:03:37 | 4807 |
| Susanville | 07:51:09 | -33.1 | Dark | Up | 31.7 | 211.2 | Up | 07:38:46 - 08:03:32 | 4787 |
| Gimple | 07:51:10 | -33.4 | Dark | Up | 32.0 | 211.0 | Up | 07:38:47 - 08:03:33 | 4768 |
| Greenville | 07:51:10 | -33.4 | Dark | Up | 32.0 | 211.0 | Up | 07:38:47 - 08:03:33 | 4767 |
| Portola | 07:51:07 | -33.7 | Dark | Up | 32.1 | 211.5 | Up | 07:38:44 - 08:03:30 | 4757 |
| Quincy | 07:51:10 | -33.6 | Dark | Up | 32.2 | 211.0 | Up | 07:38:47 - 08:03:33 | 4756 |
| Reno | 07:51:05 | -34.0 | Dark | Up | 32.1 | 212.3 | Up | 07:38:42 - 08:03:28 | 4755 |
| Yerington | 07:51:01 | -34.6 | Dark | Up | 32.3 | 213.2 | Up | 07:38:38 - 08:03:24 | 4736 |
| Carson City | 07:51:03 | -34.4 | Dark | Up | 32.4 | 212.4 | Up | 07:38:40 - 08:03:26 | 4735 |
| Gardnerville | 07:51:04 | -34.6 | Dark | Up | 32.5 | 212.6 | Up | 07:38:41 - 08:03:27 | 4723 |
| Hawthorne | 07:50:59 | -35.1 | Dark | Up | 32.4 | 213.9 | Up | 07:38:36 - 08:03:22 | 4719 |
| Tonopah | 07:50:53 | -35.5 | Dark | Up | 32.2 | 215.5 | Up | 07:38:30 - 08:03:16 | 4717 |
| Lee Vining | 07:50:58 | -35.6 | Dark | Up | 33.1 | 213.6 | Up | 07:38:35 - 08:03:21 | 4678 |
| Beatty | 07:50:48 | -36.7 | Dark | Up | 32.9 | 216.3 | Up | 07:38:25 - 08:03:11 | 4658 |
| Indian Springs | 07:50:44 | -36.9 | Dark | Up | 32.7 | 217.5 | Up | 07:38:21 - 08:03:07 | 4657 |
| Bishop | 07:50:54 | -36.2 | Dark | Up | 33.3 | 214.5 | Up | 07:38:31 - 08:03:17 | 4657 |
| Henderson | 07:50:39 | -37.4 | Dark | Up | 32.8 | 218.4 | Up | 07:38:16 - 08:03:02 | 4637 |
| Lone Pine | 07:50:52 | -37.0 | Dark | Up | 33.8 | 215.1 | Up | 07:38:29 - 08:03:15 | 4618 |
| Patrick | 07:50:34 | -38.0 | Dark | Up | 32.7 | 219.8 | Up | 07:38:11 - 08:02:57 | 4618 |
| Searchlight/Boulder City | 07:50:38 | -38.0 | Dark | Up | 33.2 | 218.7 | Up | 07:38:15 - 08:03:01 | 4604 |
| Kingman/Dolan Springs | 07:50:34 | -38.2 | Dark | Up | 33.0 | 219.7 | Up | 07:38:11 - 08:02:57 | 4601 |
| Laughlin/Bullhead City | 07:50:36 | -38.3 | Dark | Up | 33.2 | 219.2 | Up | 07:38:13 - 08:02:59 | 4591 |
| Mohave Valley | 07:50:35 | -38.6 | Dark | Up | 33.4 | 219.3 | Up | 07:38:12 - 08:02:58 | 4575 |
| Lake Havasu City | 07:50:33 | -38.9 | Dark | Up | 33.6 | 219.7 | Up | 07:38:10 - 08:02:56 | 4554 |
| Parker | 07:50:32 | -39.3 | Dark | Up | 33.9 | 219.9 | Up | 07:38:09 - 08:02:55 | 4533 |
| Blythe | 07:50:32 | -39.8 | Dark | Up | 34.5 | 219.8 | Up | 07:38:09 - 08:02:55 | 4495 |
| CPSLO | 07:50:58 | -38.2 | Dark | Up | 36.0 | 212.9 | Up | 07:38:35 - 08:03:21 | 4491 |
| Idyllwild | 07:50:39 | -39.8 | Dark | Up | 35.5 | 217.7 | Up | 07:38:16 - 08:03:02 | 4466 |
| Wildwood | 07:50:47 | -39.5 | Dark | Up | 36.1 | 215.6 | Up | 07:38:24 - 08:03:10 | 4455 |
| Calipatria | 07:50:33 | -40.4 | Dark | Up | 35.3 | 219.1 | Up | 07:38:10 - 08:02:56 | 4448 |
| Yuma | 07:50:30 | -40.8 | Dark | Up | 35.2 | 220.2 | Up | 07:38:07 - 08:02:53 | 4436 |
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 535994, (2020/05/05 07:51UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 7.27 11 40Psi Vir 12:54:21.1 -09:32:21 4.8 2.86 8 PPM 226581 12:57:12.6 -12:04:01 6.6 0.44 11 PPM 226542 12:55:41.8 -12:02:58 9.1 0.33 11 535994 12:55:53.6 -12:22:22 15.4 11 Positions are for J2000
Event circumstances last updated at 2019/07/02 02:38:24 UT
Marc W. Buie, Southwest Research Institute