Event between (469438) 02GV31 and star GA0900:03835474 with event index number of 244120
Geocentric closest approach at 2020/01/29 09:06:32 UTC
J2000 position of star is 12:08:19.7 +01:09:50
Equinox of date position of star is 12:09:16.4 +01:03:40
Stellar brightness G=15.3,
use SENSEUP=128
Star is 176 degrees from the moon.
Moon is 18% illuminated.
TNO apparent brightness V=22.5
[RECON map]
TNO is 40.0 AU from the Sun
and 39.4 AU from the Earth.
The TNO is moving 13.2
km/sec on the sky relative to the star, or,
1.7 arcsec/hr.
The 1-sigma error in the time of the event is 403 seconds.
The 1-sigma cross-track error in the shadow position is
2891 km.
The sky-plane scale is
28609.8 km/arcsec.
The TNO has an absolute magnitude Hv=6.4
Diameter=316.2 km assuming a 5% albedo -- 23.9 sec chord
Diameter=129.1 km assuming a 30% albedo -- 9.8 sec chord
Dynamical classification is CLASSICAL
Star training set for 469438, (2020/01/29 09:07UT) Object RA Dec mag sep mel Spica 13:26:15.2 -11:15:56 1.0 22.74 154 Denebola 11:50:05.0 +14:27:35 2.1 14.23 170 10 Vir 12:10:43.1 +01:47:07 5.9 0.81 176 PPM 158545 12:09:02.3 +00:30:34 7.7 0.55 175 PPM 158535 12:08:35.0 +01:18:30 9.5 0.32 176 469438 12:09:21.4 +01:03:08 15.3 176 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
2.2 sigma about the mid-time.
The median site spacing is 21.7 km
RECON observability=1.0 and success probability=0.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Penticton | 09:10:42 | -56.3 | Dark | Down | 32.8 | 135.8 | Up | 08:55:42 - 09:25:42 | 15119 |
| Oroville | 09:10:42 | -56.8 | Dark | Down | 33.3 | 135.7 | Up | 08:55:42 - 09:25:42 | 15069 |
| Tonasket | 09:10:43 | -57.0 | Dark | Down | 33.4 | 135.6 | Up | 08:55:43 - 09:25:43 | 15048 |
| Okanogan | 09:10:44 | -57.3 | Dark | Down | 33.6 | 135.3 | Up | 08:55:44 - 09:25:44 | 15015 |
| Brewster | 09:10:45 | -57.6 | Dark | Down | 33.7 | 134.9 | Up | 08:55:45 - 09:25:45 | 14985 |
| Manson/Chelan | 09:10:46 | -57.9 | Dark | Down | 33.7 | 134.5 | Up | 08:55:46 - 09:25:46 | 14957 |
| Entiat | 09:10:46 | -58.2 | Dark | Down | 33.8 | 134.3 | Up | 08:55:46 - 09:25:46 | 14936 |
| Wenatchee | 09:10:43 | -58.4 | Dark | Down | 33.9 | 134.0 | Up | 08:55:43 - 09:25:43 | 14910 |
| Ellensburg | 09:10:46 | -58.9 | Dark | Down | 34.1 | 133.6 | Up | 08:55:46 - 09:25:46 | 14867 |
| Pasco | 09:10:42 | -59.1 | Dark | Down | 35.3 | 134.7 | Up | 08:55:42 - 09:25:42 | 14837 |
| Yakima | 09:10:49 | -59.2 | Dark | Down | 34.4 | 133.4 | Up | 08:55:49 - 09:25:49 | 14830 |
| PNWRO | 09:10:42 | -59.2 | Dark | Down | 35.6 | 134.9 | Up | 08:55:42 - 09:25:42 | 14821 |
| Toppenish/White Swan | 09:10:48 | -59.4 | Dark | Down | 34.6 | 133.5 | Up | 08:55:48 - 09:25:48 | 14814 |
| George/Umatilla | 09:10:44 | -59.4 | Dark | Down | 35.4 | 134.3 | Up | 08:55:44 - 09:25:44 | 14801 |
| Goldendale | 09:10:51 | -60.0 | Dark | Down | 34.8 | 132.8 | Up | 08:55:51 - 09:25:51 | 14753 |
| The Dalles | 09:10:53 | -60.3 | Dark | Down | 34.7 | 132.3 | Up | 08:55:53 - 09:25:53 | 14722 |
| Niwot | 09:09:32 | -56.7 | Dark | Down | 46.3 | 147.5 | Up | 08:54:32 - 09:24:32 | 14709 |
| Maupin | 09:10:52 | -60.6 | Dark | Down | 35.1 | 132.2 | Up | 08:55:52 - 09:25:52 | 14687 |
| Madras/Culver | 09:10:53 | -61.1 | Dark | Down | 35.4 | 131.8 | Up | 08:55:53 - 09:25:53 | 14635 |
| Redmond | 09:10:53 | -61.5 | Dark | Down | 35.6 | 131.6 | Up | 08:55:53 - 09:25:53 | 14600 |
| Sisters | 09:10:54 | -61.6 | Dark | Down | 35.4 | 131.2 | Up | 08:55:54 - 09:25:54 | 14591 |
| Bend | 09:10:54 | -61.7 | Dark | Down | 35.7 | 131.3 | Up | 08:55:54 - 09:25:54 | 14576 |
| Oregon Observatory | 09:10:55 | -61.9 | Dark | Down | 35.7 | 131.1 | Up | 08:55:55 - 09:25:55 | 14556 |
| La Pine/Gilchrist | 09:10:55 | -62.1 | Dark | Down | 35.8 | 130.9 | Up | 08:55:55 - 09:25:55 | 14535 |
| North Lake | 09:10:52 | -62.3 | Dark | Down | 36.5 | 131.3 | Up | 08:55:52 - 09:25:52 | 14511 |
| Paisley | 09:10:49 | -62.7 | Dark | Down | 37.0 | 131.4 | Up | 08:55:49 - 09:25:49 | 14469 |
| Lakeview | 09:10:50 | -63.0 | Dark | Down | 37.5 | 131.3 | Up | 08:55:50 - 09:25:50 | 14427 |
| Chiloquin | 09:10:56 | -63.2 | Dark | Down | 36.4 | 130.0 | Up | 08:55:56 - 09:25:56 | 14421 |
| Klamath Falls | 09:10:56 | -63.5 | Dark | Down | 36.6 | 129.9 | Up | 08:55:56 - 09:25:56 | 14390 |
| Tulelake | 09:10:55 | -63.6 | Dark | Down | 37.0 | 130.0 | Up | 08:55:55 - 09:25:55 | 14373 |
| Cedarville | 09:10:47 | -63.5 | Dark | Down | 38.0 | 131.1 | Up | 08:55:47 - 09:25:47 | 14369 |
| Fall River/Burney | 09:10:55 | -64.4 | Dark | Down | 37.6 | 129.6 | Up | 08:55:55 - 09:25:55 | 14289 |
| Susanville | 09:10:52 | -64.6 | Dark | Down | 38.4 | 129.9 | Up | 08:55:52 - 09:25:52 | 14249 |
| Gimple | 09:10:51 | -65.0 | Dark | Down | 38.5 | 129.5 | Up | 08:55:51 - 09:25:51 | 14216 |
| Greenville | 09:10:53 | -65.0 | Dark | Down | 38.4 | 129.5 | Up | 08:55:53 - 09:25:53 | 14214 |
| Portola | 09:10:51 | -65.1 | Dark | Down | 38.9 | 129.7 | Up | 08:55:51 - 09:25:51 | 14196 |
| Quincy | 09:10:51 | -65.2 | Dark | Down | 38.6 | 129.3 | Up | 08:55:51 - 09:25:51 | 14195 |
| Reno | 09:10:48 | -65.0 | Dark | Down | 39.5 | 130.2 | Up | 08:55:48 - 09:25:48 | 14190 |
| Yerington | 09:10:43 | -65.2 | Dark | Down | 40.2 | 130.6 | Up | 08:55:43 - 09:25:43 | 14156 |
| Carson City | 09:10:48 | -65.3 | Dark | Down | 39.7 | 130.0 | Up | 08:55:48 - 09:25:48 | 14156 |
| Gardnerville | 09:10:46 | -65.5 | Dark | Down | 39.9 | 129.9 | Up | 08:55:46 - 09:25:46 | 14134 |
| Hawthorne | 09:10:42 | -65.3 | Dark | Down | 40.8 | 130.8 | Up | 08:55:42 - 09:25:42 | 14127 |
| Tonopah | 09:10:32 | -65.0 | Dark | Down | 41.9 | 132.0 | Up | 08:55:32 - 09:25:32 | 14126 |
| Lee Vining | 09:10:39 | -66.0 | Dark | Down | 40.9 | 129.9 | Up | 08:55:39 - 09:25:39 | 14058 |
| Indian Springs | 09:10:22 | -65.2 | Dark | Down | 43.8 | 132.6 | Up | 08:55:22 - 09:25:22 | 14031 |
| Beatty | 09:10:33 | -65.6 | Dark | Down | 43.0 | 131.7 | Up | 08:55:33 - 09:25:33 | 14028 |
| Bishop | 09:10:39 | -66.1 | Dark | Down | 41.7 | 130.3 | Up | 08:55:39 - 09:25:39 | 14022 |
| Henderson | 09:10:23 | -65.2 | Dark | Down | 44.6 | 133.0 | Up | 08:55:23 - 09:25:23 | 14002 |
| Patrick | 09:10:11 | -64.9 | Dark | Down | 45.7 | 133.8 | Up | 08:55:11 - 09:25:11 | 13979 |
| DCO | 09:10:11 | -64.6 | Dark | Down | 46.3 | 134.4 | Up | 08:55:11 - 09:25:11 | 13973 |
| Lone Pine | 09:10:37 | -66.5 | Dark | Down | 42.4 | 130.1 | Up | 08:55:37 - 09:25:37 | 13958 |
| Kingman/Dolan Springs | 09:10:15 | -65.1 | Dark | Down | 45.7 | 133.4 | Up | 08:55:15 - 09:25:15 | 13951 |
| Searchlight/Boulder City | 09:10:19 | -65.5 | Dark | Down | 45.0 | 132.7 | Up | 08:55:19 - 09:25:19 | 13949 |
| Laughlin/Bullhead City | 09:10:15 | -65.5 | Dark | Down | 45.4 | 132.8 | Up | 08:55:15 - 09:25:15 | 13931 |
| Mohave Valley | 09:10:18 | -65.7 | Dark | Down | 45.6 | 132.6 | Up | 08:55:18 - 09:25:18 | 13905 |
| Lake Havasu City | 09:10:18 | -65.7 | Dark | Down | 46.0 | 132.6 | Up | 08:55:18 - 09:25:18 | 13874 |
| Parker | 09:10:18 | -65.9 | Dark | Down | 46.3 | 132.4 | Up | 08:55:18 - 09:25:18 | 13841 |
| Blythe | 09:10:18 | -66.4 | Dark | Down | 46.5 | 131.6 | Up | 08:55:18 - 09:25:18 | 13780 |
| CPSLO | 09:10:51 | -68.8 | Dark | Down | 41.6 | 126.5 | Up | 08:55:51 - 09:25:51 | 13750 |
| Idyllwild | 09:10:28 | -67.7 | Dark | Down | 45.1 | 129.4 | Up | 08:55:28 - 09:25:28 | 13720 |
| Calipatria | 09:10:19 | -67.4 | Dark | Down | 46.2 | 130.2 | Up | 08:55:19 - 09:25:19 | 13700 |
| Wildwood | 09:10:39 | -68.6 | Dark | Down | 43.6 | 127.7 | Up | 08:55:39 - 09:25:39 | 13695 |
| Yuma | 09:10:16 | -67.0 | Dark | Down | 47.0 | 130.8 | Up | 08:55:16 - 09:25:16 | 13688 |
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 469438, (2020/01/29 09:07UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 22.74 154 Denebola 11:49:03.0 +14:34:17 2.1 14.23 170 10 Vir 12:09:41.4 +01:53:49 5.9 0.81 176 PPM 158545 12:08:00.6 +00:37:16 7.7 0.55 175 PPM 158535 12:07:33.3 +01:25:13 9.5 0.32 176 469438 12:08:19.7 +01:09:50 15.3 176 Positions are for J2000
Event circumstances last updated at 2018/06/12 19:52:02 UT
Marc W. Buie, Southwest Research Institute