Event between 01HA59 and star GA0700:05995831 with event index number of 243191
Geocentric closest approach at 2020/01/31 11:44:54 UTC
J2000 position of star is 15:51:05.4 -19:06:40
Equinox of date position of star is 15:52:12.8 -19:10:07
Stellar brightness G=16.7,
use SENSEUP=128
Star is 144 degrees from the moon.
Moon is 35% illuminated.
TNO apparent brightness V=23.3
[RECON map]
TNO is 45.8 AU from the Sun
and 46.2 AU from the Earth.
The TNO is moving 14.3
km/sec on the sky relative to the star, or,
1.5 arcsec/hr.
The 1-sigma error in the time of the event is 1213 seconds.
The 1-sigma cross-track error in the shadow position is
4168 km.
The sky-plane scale is
33473.3 km/arcsec.
The TNO has an absolute magnitude Hv=6.5
Diameter=299.2 km assuming a 5% albedo -- 20.9 sec chord
Diameter=122.2 km assuming a 30% albedo -- 8.5 sec chord
Dynamical classification is CLASSICAL
Star training set for 01HA59, (2020/01/31 11:45UT) Object RA Dec mag sep mel Antares 16:30:38.5 -26:28:30 0.9 11.46 133 8Bet1Sco 16:06:36.5 -19:51:32 2.6 3.45 140 47 Lib 15:56:10.2 -19:26:26 5.9 0.96 143 PPM 230855 15:52:47.6 -18:59:56 7.3 0.21 144 PPM 230846 15:52:28.9 -19:19:06 9.1 0.16 144 01HA59 15:52:15.1 -19:10:14 16.7 143 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
0.7 sigma about the mid-time.
The median site spacing is 52.3 km
RECON observability=0.1 and success probability=5.8%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 11:40:04 | -37.2 | Dark | Down | 7.2 | 131.4 | Really Low | 11:25:04 - 11:55:04 | -80 |
| Summerland | 11:40:02 | -37.5 | Dark | Down | 7.2 | 131.1 | Really Low | 11:25:02 - 11:55:02 | -106 |
| Penticton | 11:40:02 | -37.5 | Dark | Down | 7.3 | 131.2 | Really Low | 11:25:02 - 11:55:02 | -108 |
| Okanagan Falls | 11:40:01 | -37.5 | Dark | Down | 7.4 | 131.2 | Really Low | 11:25:01 - 11:55:01 | -120 |
| Oliver | 11:40:01 | -37.6 | Dark | Down | 7.5 | 131.2 | Really Low | 11:25:01 - 11:55:01 | -130 |
| Anarchist Mountain Observatory | 11:40:00 | -37.5 | Dark | Down | 7.7 | 131.3 | Really Low | 11:25:00 - 11:55:00 | -135 |
| Oroville | 11:40:00 | -37.6 | Dark | Down | 7.8 | 131.2 | Really Low | 11:25:00 - 11:55:00 | -142 |
| Tonasket | 11:39:59 | -37.7 | Dark | Down | 7.9 | 131.2 | Really Low | 11:24:59 - 11:54:59 | -157 |
| Okanogan | 11:39:57 | -37.9 | Dark | Down | 8.1 | 131.1 | Really Low | 11:24:57 - 11:54:57 | -183 |
| Brewster | 11:39:56 | -38.1 | Dark | Down | 8.1 | 130.9 | Really Low | 11:24:56 - 11:54:56 | -206 |
| Manson/Chelan | 11:39:54 | -38.4 | Dark | Down | 8.1 | 130.5 | Really Low | 11:24:54 - 11:54:54 | -229 |
| Entiat | 11:39:53 | -38.5 | Dark | Down | 8.2 | 130.5 | Really Low | 11:24:53 - 11:54:53 | -246 |
| Wenatchee | 11:39:52 | -38.6 | Dark | Down | 8.3 | 130.3 | Really Low | 11:24:52 - 11:54:52 | -265 |
| Ellensburg | 11:39:50 | -38.9 | Dark | Down | 8.4 | 130.1 | Really Low | 11:24:50 - 11:54:50 | -299 |
| Pasco | 11:39:51 | -38.2 | Dark | Down | 9.7 | 131.2 | Really Low | 11:24:51 - 11:54:51 | -309 |
| PNWRO | 11:39:50 | -38.1 | Dark | Down | 9.9 | 131.3 | Really Low | 11:24:50 - 11:54:50 | -319 |
| Niwot | 11:40:25 | -28.9 | Dark | Down | 21.2 | 141.7 | Low | 11:25:25 - 11:55:25 | -320 |
| Yakima | 11:39:47 | -39.1 | Dark | Down | 8.7 | 130.0 | Really Low | 11:24:47 - 11:54:47 | -327 |
| SwRI | 11:40:24 | -29.0 | Dark | Down | 21.2 | 141.6 | Low | 11:25:24 - 11:55:24 | -330 |
| Toppenish/White Swan | 11:39:47 | -39.0 | Dark | Down | 8.9 | 130.2 | Really Low | 11:24:47 - 11:54:47 | -337 |
| George/Umatilla | 11:39:49 | -38.4 | Dark | Down | 9.8 | 130.9 | Really Low | 11:24:49 - 11:54:49 | -337 |
| Goldendale | 11:39:44 | -39.5 | Dark | Down | 9.0 | 129.7 | Really Low | 11:24:44 - 11:54:44 | -386 |
| The Dalles | 11:39:42 | -39.8 | Dark | Down | 9.0 | 129.4 | Really Low | 11:24:42 - 11:54:42 | -412 |
| Maupin | 11:39:41 | -39.8 | Dark | Down | 9.3 | 129.4 | Really Low | 11:24:41 - 11:54:41 | -438 |
| Madras/Culver | 11:39:39 | -40.0 | Dark | Down | 9.6 | 129.3 | Really Low | 11:24:39 - 11:54:39 | -478 |
| Redmond | 11:39:38 | -40.1 | Dark | Down | 9.8 | 129.2 | Really Low | 11:24:38 - 11:54:38 | -504 |
| Sisters | 11:39:36 | -40.4 | Dark | Down | 9.6 | 128.9 | Really Low | 11:24:36 - 11:54:36 | -515 |
| Bend | 11:39:36 | -40.3 | Dark | Down | 9.9 | 129.1 | Really Low | 11:24:36 - 11:54:36 | -524 |
| Oregon Observatory | 11:39:35 | -40.5 | Dark | Down | 9.9 | 129.0 | Really Low | 11:24:35 - 11:54:35 | -540 |
| La Pine/Gilchrist | 11:39:34 | -40.6 | Dark | Down | 10.0 | 128.9 | Really Low | 11:24:34 - 11:54:34 | -557 |
| North Lake | 11:39:35 | -40.2 | Dark | Down | 10.6 | 129.3 | Really Low | 11:24:35 - 11:54:35 | -570 |
| Paisley | 11:39:33 | -40.1 | Dark | Down | 11.2 | 129.5 | Really Low | 11:24:33 - 11:54:33 | -599 |
| Lakeview | 11:39:33 | -40.1 | Dark | Down | 11.6 | 129.6 | Really Low | 11:24:33 - 11:54:33 | -630 |
| Chiloquin | 11:39:29 | -41.1 | Dark | Down | 10.5 | 128.4 | Really Low | 11:24:29 - 11:54:29 | -648 |
| Klamath Falls | 11:39:28 | -41.1 | Dark | Down | 10.7 | 128.5 | Really Low | 11:24:28 - 11:54:28 | -671 |
| Cedarville | 11:39:31 | -40.1 | Dark | Down | 12.1 | 129.6 | Really Low | 11:24:31 - 11:54:31 | -673 |
| Tulelake | 11:39:28 | -41.0 | Dark | Down | 11.1 | 128.6 | Really Low | 11:24:28 - 11:54:28 | -682 |
| Fall River/Burney | 11:39:26 | -41.2 | Dark | Down | 11.7 | 128.6 | Really Low | 11:24:26 - 11:54:26 | -747 |
| Susanville | 11:39:26 | -40.8 | Dark | Down | 12.5 | 129.0 | Really Low | 11:24:26 - 11:54:26 | -771 |
| Gimple | 11:39:25 | -41.0 | Dark | Down | 12.6 | 128.8 | Really Low | 11:24:25 - 11:54:25 | -799 |
| Greenville | 11:39:24 | -41.0 | Dark | Down | 12.5 | 128.7 | Really Low | 11:24:24 - 11:54:24 | -801 |
| Reno | 11:39:26 | -40.3 | Dark | Down | 13.6 | 129.5 | Really Low | 11:24:26 - 11:54:26 | -811 |
| Portola | 11:39:25 | -40.7 | Dark | Down | 13.0 | 129.0 | Really Low | 11:24:25 - 11:54:25 | -811 |
| Quincy | 11:39:23 | -41.1 | Dark | Down | 12.6 | 128.7 | Really Low | 11:24:23 - 11:54:23 | -816 |
| Yerington | 11:39:27 | -39.9 | Dark | Down | 14.3 | 129.9 | Really Low | 11:24:27 - 11:54:27 | -832 |
| Carson City | 11:39:25 | -40.4 | Dark | Down | 13.8 | 129.4 | Really Low | 11:24:25 - 11:54:25 | -837 |
| Tonopah | 11:39:31 | -38.5 | Dark | Down | 16.1 | 131.2 | Really Low | 11:24:31 - 11:54:31 | -841 |
| Hawthorne | 11:39:27 | -39.6 | Dark | Down | 14.9 | 130.2 | Really Low | 11:24:27 - 11:54:27 | -851 |
| Gardnerville | 11:39:24 | -40.4 | Dark | Down | 14.0 | 129.4 | Really Low | 11:24:24 - 11:54:24 | -855 |
| Indian Springs | 11:39:32 | -37.5 | Dark | Down | 18.0 | 132.0 | Really Low | 11:24:32 - 11:54:32 | -906 |
| Lee Vining | 11:39:24 | -40.0 | Dark | Down | 15.0 | 129.7 | Really Low | 11:24:24 - 11:54:24 | -910 |
| Beatty | 11:39:29 | -38.3 | Dark | Down | 17.1 | 131.3 | Really Low | 11:24:29 - 11:54:29 | -916 |
| Henderson | 11:39:34 | -37.0 | Dark | Down | 18.8 | 132.4 | Really Low | 11:24:34 - 11:54:34 | -925 |
| Bishop | 11:39:25 | -39.6 | Dark | Down | 15.8 | 130.1 | Really Low | 11:24:25 - 11:54:25 | -933 |
| Patrick | 11:39:37 | -36.1 | Dark | Down | 19.9 | 133.2 | Really Low | 11:24:37 - 11:54:37 | -937 |
| DCO | 11:39:39 | -35.5 | Dark | Down | 20.5 | 133.6 | Low | 11:24:39 - 11:54:39 | -938 |
| Kingman/Dolan Springs | 11:39:35 | -36.3 | Dark | Down | 19.9 | 132.9 | Really Low | 11:24:35 - 11:54:35 | -961 |
| Searchlight/Boulder City | 11:39:32 | -37.0 | Dark | Down | 19.2 | 132.3 | Really Low | 11:24:32 - 11:54:32 | -968 |
| Laughlin/Bullhead City | 11:39:34 | -36.7 | Dark | Down | 19.6 | 132.5 | Really Low | 11:24:34 - 11:54:34 | -980 |
| Lone Pine | 11:39:23 | -39.4 | Dark | Down | 16.5 | 130.2 | Really Low | 11:24:23 - 11:54:23 | -982 |
| Mohave Valley | 11:39:33 | -36.7 | Dark | Down | 19.8 | 132.5 | Really Low | 11:24:33 - 11:54:33 | -1001 |
| Lake Havasu City | 11:39:33 | -36.5 | Dark | Down | 20.2 | 132.5 | Low | 11:24:33 - 11:54:33 | -1025 |
| Parker | 11:39:32 | -36.5 | Dark | Down | 20.5 | 132.5 | Low | 11:24:32 - 11:54:32 | -1052 |
| Blythe | 11:39:29 | -36.8 | Dark | Down | 20.6 | 132.1 | Low | 11:24:29 - 11:54:29 | -1104 |
| Idyllwild | 11:39:21 | -38.6 | Dark | Down | 19.2 | 130.5 | Really Low | 11:24:21 - 11:54:21 | -1167 |
| CPSLO | 11:39:12 | -41.7 | Dark | Down | 15.7 | 128.0 | Really Low | 11:24:12 - 11:54:12 | -1172 |
| Calipatria | 11:39:25 | -37.6 | Dark | Down | 20.4 | 131.2 | Low | 11:24:25 - 11:54:25 | -1176 |
| Yuma | 11:39:27 | -36.9 | Dark | Down | 21.2 | 131.8 | Low | 11:24:27 - 11:54:27 | -1181 |
| Wildwood | 11:39:16 | -40.2 | Dark | Down | 17.7 | 129.2 | Really Low | 11:24:16 - 11:54:16 | -1202 |
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 01HA59, (2020/01/31 11:45UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 11.46 133 8Bet1Sco 16:05:26.2 -19:48:20 2.6 3.45 140 47 Lib 15:55:00.4 -19:22:59 5.9 0.96 143 PPM 230855 15:51:38.0 -18:56:23 7.3 0.21 144 PPM 230846 15:51:19.1 -19:15:32 9.1 0.16 144 01HA59 15:51:05.4 -19:06:40 16.7 144 Positions are for J2000
Event circumstances last updated at 2019/06/07 23:13:06 UT
Marc W. Buie, Southwest Research Institute