Event between 07LG38 and star GA0900:06958382 with event index number of 1122965
Geocentric closest approach at 2021/08/07 09:14:53 UTC
J2000 position of star is 18:11:01.2 +01:34:23
Equinox of date position of star is 18:12:05.9 +01:34:45
Stellar brightness G=16.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 140 degrees from the moon.
Moon is 2% illuminated.
TNO apparent brightness V=23.9
[RECON map]
TNO is 35.8 AU from the Sun
and 35.1 AU from the Earth.
The TNO is moving 19.5
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 171 seconds.
The 1-sigma cross-track error in the shadow position is
3182 km.
The sky-plane scale is
25487.5 km/arcsec.
The TNO has an absolute magnitude Hv=8.3
Diameter=132.4 km assuming a 5% albedo -- 6.8 sec chord
Diameter=54.1 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is 5:2EEE
Star training set for 07LG38, (2021/08/07 09:15UT) Object RA Dec mag sep mel Antares 16:30:44.1 -26:28:41 0.9 37.22 129 60Bet Oph 17:44:32.4 +04:33:35 2.8 7.50 133 PPM 165298 18:10:58.9 +03:07:27 6.1 1.57 139 PPM 165305 18:11:13.5 +02:23:12 8.3 0.84 140 PPM 165363 18:13:12.7 +01:39:50 9.1 0.29 140 07LG38 18:12:06.8 +01:34:45 16.6 141 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 35.4 km
RECON observability=0.8 and success probability=5.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Clarence Fulton | 09:10:07 | -21.8 | Dark | Down | 19.0 | 248.4 | Really Low | 08:55:24 - 09:24:49 | 7933 |
| Kelowna | 09:10:07 | -22.2 | Dark | Down | 19.2 | 248.4 | Really Low | 08:55:24 - 09:24:49 | 7897 |
| Peachland | 09:10:07 | -22.4 | Dark | Down | 19.4 | 248.2 | Really Low | 08:55:24 - 09:24:49 | 7891 |
| Summerland | 09:10:06 | -22.5 | Dark | Down | 19.4 | 248.3 | Really Low | 08:55:24 - 09:24:49 | 7874 |
| Penticton | 09:10:06 | -22.6 | Dark | Down | 19.4 | 248.4 | Really Low | 08:55:23 - 09:24:48 | 7865 |
| Victoria | 09:10:11 | -24.2 | Dark | Down | 22.1 | 245.5 | Low | 08:55:28 - 09:24:53 | 7836 |
| Oliver | 09:10:06 | -22.9 | Dark | Down | 19.5 | 248.5 | Really Low | 08:55:24 - 09:24:49 | 7829 |
| Anarchist Mountain Observatory | 09:10:05 | -23.0 | Dark | Down | 19.5 | 248.7 | Really Low | 08:55:22 - 09:24:47 | 7808 |
| Tonasket | 09:10:05 | -23.3 | Dark | Down | 19.6 | 248.8 | Really Low | 08:55:22 - 09:24:47 | 7778 |
| Okanogan | 09:10:05 | -23.7 | Dark | Down | 19.8 | 248.8 | Really Low | 08:55:23 - 09:24:48 | 7746 |
| Brewster | 09:10:04 | -24.0 | Dark | Down | 20.1 | 248.7 | Low | 08:55:22 - 09:24:47 | 7722 |
| Manson/Chelan | 09:10:04 | -24.2 | Dark | Down | 20.4 | 248.5 | Low | 08:55:22 - 09:24:47 | 7707 |
| Wenatchee | 09:10:05 | -24.7 | Dark | Down | 20.7 | 248.5 | Low | 08:55:22 - 09:24:47 | 7662 |
| Ellensburg | 09:10:05 | -25.2 | Dark | Down | 20.9 | 248.4 | Low | 08:55:22 - 09:24:47 | 7624 |
| Yakima | 09:10:05 | -25.6 | Dark | Down | 21.1 | 248.6 | Low | 08:55:22 - 09:24:47 | 7582 |
| Toppenish/White Swan | 09:10:04 | -25.7 | Dark | Down | 21.1 | 248.8 | Low | 08:55:22 - 09:24:47 | 7556 |
| Pasco | 09:10:02 | -25.6 | Dark | Down | 20.3 | 249.9 | Low | 08:55:20 - 09:24:45 | 7519 |
| Goldendale | 09:10:05 | -26.4 | Dark | Down | 21.6 | 248.6 | Low | 08:55:23 - 09:24:48 | 7507 |
| The Dalles | 09:10:06 | -26.6 | Dark | Down | 21.9 | 248.4 | Low | 08:55:24 - 09:24:49 | 7492 |
| PNWRO | 09:10:02 | -25.8 | Dark | Down | 20.2 | 250.1 | Low | 08:55:19 - 09:24:44 | 7489 |
| Maupin | 09:10:05 | -27.0 | Dark | Down | 22.0 | 248.7 | Low | 08:55:23 - 09:24:48 | 7446 |
| Sisters | 09:10:05 | -28.0 | Dark | Down | 22.6 | 248.6 | Low | 08:55:23 - 09:24:48 | 7365 |
| Redmond | 09:10:04 | -27.9 | Dark | Down | 22.3 | 248.9 | Low | 08:55:21 - 09:24:46 | 7354 |
| Bend | 09:10:04 | -28.1 | Dark | Down | 22.5 | 248.9 | Low | 08:55:22 - 09:24:47 | 7335 |
| Oregon Observatory | 09:10:06 | -28.3 | Dark | Down | 22.7 | 248.9 | Low | 08:55:24 - 09:24:49 | 7320 |
| La Pine/Gilchrist | 09:10:06 | -28.5 | Dark | Down | 22.8 | 248.9 | Low | 08:55:24 - 09:24:49 | 7300 |
| North Lake | 09:10:03 | -28.8 | Dark | Down | 22.5 | 249.6 | Low | 08:55:21 - 09:24:46 | 7241 |
| Chiloquin | 09:10:05 | -29.7 | Dark | Down | 23.4 | 249.1 | Low | 08:55:23 - 09:24:48 | 7191 |
| Paisley | 09:10:03 | -29.3 | Dark | Down | 22.5 | 250.0 | Low | 08:55:20 - 09:24:45 | 7176 |
| Klamath Falls | 09:10:04 | -30.0 | Dark | Down | 23.5 | 249.3 | Low | 08:55:22 - 09:24:47 | 7153 |
| Lakeview | 09:10:03 | -29.7 | Dark | Down | 22.5 | 250.4 | Low | 08:55:20 - 09:24:45 | 7119 |
| Cedarville | 09:10:03 | -30.3 | Dark | Down | 22.6 | 250.8 | Low | 08:55:20 - 09:24:45 | 7046 |
| Fall River/Burney | 09:10:03 | -31.1 | Dark | Down | 23.6 | 250.0 | Low | 08:55:20 - 09:24:45 | 7021 |
| Susanville | 09:10:03 | -31.5 | Dark | Down | 23.3 | 250.9 | Low | 08:55:20 - 09:24:45 | 6939 |
| Greenville | 09:10:03 | -31.8 | Dark | Down | 23.6 | 250.8 | Low | 08:55:20 - 09:24:45 | 6916 |
| Gimple | 09:10:03 | -31.8 | Dark | Down | 23.6 | 250.8 | Low | 08:55:20 - 09:24:45 | 6914 |
| Quincy | 09:10:03 | -32.0 | Dark | Down | 23.7 | 250.8 | Low | 08:55:20 - 09:24:45 | 6894 |
| Portola | 09:10:01 | -32.0 | Dark | Down | 23.4 | 251.2 | Low | 08:55:19 - 09:24:44 | 6871 |
| Reno | 09:10:00 | -32.1 | Dark | Down | 23.0 | 251.8 | Low | 08:55:17 - 09:24:42 | 6828 |
| Carson City | 09:10:00 | -32.5 | Dark | Down | 23.1 | 252.0 | Low | 08:55:17 - 09:24:42 | 6790 |
| Gardnerville | 09:10:00 | -32.7 | Dark | Down | 23.1 | 252.1 | Low | 08:55:17 - 09:24:42 | 6763 |
| Yerington | 09:09:58 | -32.5 | Dark | Down | 22.7 | 252.5 | Low | 08:55:16 - 09:24:41 | 6755 |
| Hawthorne | 09:09:57 | -32.8 | Dark | Down | 22.4 | 253.1 | Low | 08:55:15 - 09:24:40 | 6695 |
| Dunrhomin | 09:09:38 | -26.6 | Dark | Down | 12.0 | 261.8 | Really Low | 08:54:55 - 09:24:20 | 6674 |
| Lee Vining | 09:09:59 | -33.4 | Dark | Down | 23.0 | 253.0 | Low | 08:55:17 - 09:24:42 | 6645 |
| Tonopah | 09:09:56 | -32.8 | Dark | Down | 21.5 | 254.3 | Low | 08:55:13 - 09:24:38 | 6616 |
| Bishop | 09:09:57 | -33.8 | Dark | Down | 22.6 | 253.7 | Low | 08:55:15 - 09:24:40 | 6565 |
| Beatty | 09:09:54 | -33.8 | Dark | Down | 21.5 | 255.0 | Low | 08:55:11 - 09:24:36 | 6482 |
| Indian Springs | 09:09:53 | -33.7 | Dark | Down | 20.7 | 255.9 | Low | 08:55:10 - 09:24:35 | 6426 |
| CPSLO | 09:10:01 | -36.4 | Dark | Down | 24.9 | 253.0 | Low | 08:55:19 - 09:24:44 | 6395 |
| Henderson | 09:09:51 | -34.0 | Dark | Down | 20.3 | 256.5 | Low | 08:55:08 - 09:24:33 | 6355 |
| Patrick | 09:09:49 | -34.2 | Dark | Down | 19.6 | 257.5 | Really Low | 08:55:06 - 09:24:31 | 6267 |
| Laughlin/Bullhead City | 09:09:50 | -34.6 | Dark | Down | 20.2 | 257.1 | Low | 08:55:08 - 09:24:33 | 6253 |
| Kingman/Dolan Springs | 09:09:50 | -34.4 | Dark | Down | 19.8 | 257.4 | Really Low | 08:55:08 - 09:24:33 | 6246 |
| Mohave Valley | 09:09:51 | -34.9 | Dark | Down | 20.2 | 257.2 | Low | 08:55:09 - 09:24:34 | 6224 |
| Wildwood | 09:09:59 | -36.9 | Dark | Down | 23.6 | 254.9 | Low | 08:55:17 - 09:24:42 | 6219 |
| Lake Havasu City | 09:09:50 | -35.2 | Dark | Down | 20.1 | 257.5 | Low | 08:55:08 - 09:24:33 | 6175 |
| Idyllwild | 09:09:54 | -36.7 | Dark | Down | 22.2 | 256.3 | Low | 08:55:12 - 09:24:37 | 6140 |
| Parker | 09:09:50 | -35.5 | Dark | Down | 20.2 | 257.7 | Low | 08:55:08 - 09:24:33 | 6137 |
| Blythe | 09:09:50 | -36.0 | Dark | Down | 20.5 | 257.7 | Low | 08:55:08 - 09:24:33 | 6085 |
| Calipatria | 09:09:52 | -36.8 | Dark | Down | 21.4 | 257.3 | Low | 08:55:10 - 09:24:35 | 6050 |
| George/Scottsdale | 09:09:46 | -34.9 | Dark | Down | 18.3 | 259.3 | Really Low | 08:55:04 - 09:24:29 | 6048 |
| Yuma | 09:09:51 | -36.9 | Dark | Down | 20.8 | 258.0 | Low | 08:55:08 - 09:24:33 | 5986 |
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 07LG38, (2021/08/07 09:15UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 37.22 129 60Bet Oph 17:43:28.3 +04:34:06 2.8 7.50 133 PPM 165298 18:09:54.1 +03:07:07 6.1 1.57 139 PPM 165305 18:10:08.3 +02:22:51 8.3 0.84 140 PPM 165363 18:12:07.1 +01:39:26 9.1 0.29 140 07LG38 18:11:01.2 +01:34:23 16.6 140 Positions are for J2000
Event circumstances last updated at 2021/04/19 23:04:17 UT
Marc W. Buie, Southwest Research Institute