Event between 07LJ38 and star GA0900:06410223 with event index number of 1123198
Geocentric closest approach at 2021/06/03 10:05:19 UTC
J2000 position of star is 18:01:37.8 +01:38:34
Equinox of date position of star is 18:02:42.5 +01:38:38
Stellar brightness G=16.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 88 degrees from the moon.
Moon is 39% illuminated.
TNO apparent brightness V=23.2
[RECON map]
TNO is 38.6 AU from the Sun
and 37.7 AU from the Earth.
The TNO is moving 22.5
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 223 seconds.
The 1-sigma cross-track error in the shadow position is
2266 km.
The sky-plane scale is
27323.7 km/arcsec.
The TNO has an absolute magnitude Hv=7.3
Diameter=206.1 km assuming a 5% albedo -- 9.1 sec chord
Diameter=84.1 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is SCATNEAR
Star training set for 07LJ38, (2021/06/03 10:05UT) Object RA Dec mag sep mel Antares 16:30:43.5 -26:28:40 0.9 35.82 106 60Bet Oph 17:44:31.9 +04:33:36 2.8 5.39 93 70 Oph 18:06:32.4 +02:29:47 4.9 1.28 87 PPM 165060 18:03:54.7 +01:36:14 8.5 0.30 88 PPM 165004 18:02:20.2 +01:45:45 9.0 0.15 88 PPM 165022 18:02:46.9 +01:32:48 10.6 0.10 88 07LJ38 18:02:42.8 +01:38:38 16.1 88 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
4.0 sigma about the mid-time.
The median site spacing is 21.6 km
RECON observability=0.8 and success probability=0.8%
| 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 | 10:04:53 | -11.9 | NT | Up | 40.0 | 197.9 | Up | 09:49:53 - 10:19:53 | 8653 |
| Kelowna | 10:04:54 | -12.3 | AT | Up | 40.4 | 197.8 | Up | 09:49:54 - 10:19:54 | 8624 |
| Peachland | 10:04:54 | -12.5 | AT | Up | 40.6 | 197.4 | Up | 09:49:54 - 10:19:54 | 8615 |
| Summerland | 10:04:54 | -12.6 | AT | Up | 40.7 | 197.6 | Up | 09:49:54 - 10:19:54 | 8604 |
| Penticton | 10:04:53 | -12.6 | AT | Up | 40.8 | 197.7 | Up | 09:49:53 - 10:19:53 | 8600 |
| Oliver | 10:04:52 | -12.9 | AT | Up | 41.1 | 197.8 | Up | 09:49:52 - 10:19:52 | 8574 |
| Anarchist Mountain Observatory | 10:04:52 | -13.0 | AT | Up | 41.2 | 198.1 | Up | 09:49:52 - 10:19:52 | 8563 |
| Tonasket | 10:04:52 | -13.3 | AT | Up | 41.5 | 198.1 | Up | 09:49:52 - 10:19:52 | 8539 |
| Okanogan | 10:04:52 | -13.7 | AT | Up | 41.9 | 198.0 | Up | 09:49:52 - 10:19:52 | 8514 |
| Victoria | 10:05:04 | -14.7 | AT | Up | 42.4 | 193.0 | Up | 09:50:04 - 10:20:04 | 8503 |
| Brewster | 10:04:53 | -14.0 | AT | Up | 42.2 | 197.8 | Up | 09:49:53 - 10:19:53 | 8492 |
| Manson/Chelan | 10:04:53 | -14.3 | AT | Up | 42.5 | 197.4 | Up | 09:49:53 - 10:19:53 | 8474 |
| Wenatchee | 10:04:54 | -14.7 | AT | Up | 42.9 | 197.3 | Up | 09:49:54 - 10:19:54 | 8437 |
| Ellensburg | 10:04:53 | -15.2 | AT | Up | 43.4 | 197.1 | Up | 09:49:53 - 10:19:53 | 8405 |
| Yakima | 10:04:53 | -15.5 | AT | Up | 43.8 | 197.2 | Up | 09:49:53 - 10:19:53 | 8373 |
| Toppenish/White Swan | 10:04:53 | -15.7 | AT | Up | 44.0 | 197.5 | Up | 09:49:53 - 10:19:53 | 8357 |
| Pasco | 10:04:48 | -15.3 | AT | Up | 43.8 | 199.2 | Up | 09:49:48 - 10:19:48 | 8356 |
| PNWRO | 10:04:47 | -15.5 | AT | Up | 44.0 | 199.6 | Up | 09:49:47 - 10:19:47 | 8338 |
| Goldendale | 10:04:53 | -16.3 | AT | Up | 44.6 | 197.1 | Up | 09:49:53 - 10:19:53 | 8312 |
| The Dalles | 10:04:54 | -16.6 | AT | Up | 44.9 | 196.6 | Up | 09:49:54 - 10:19:54 | 8292 |
| Maupin | 10:04:53 | -16.9 | AT | Up | 45.2 | 196.9 | Up | 09:49:53 - 10:19:53 | 8260 |
| Redmond | 10:04:53 | -17.8 | AT | Up | 46.1 | 197.0 | Up | 09:49:53 - 10:19:53 | 8187 |
| Sisters | 10:04:54 | -17.9 | AT | Up | 46.2 | 196.5 | Up | 09:49:54 - 10:19:54 | 8187 |
| Bend | 10:04:53 | -18.0 | AT | Up | 46.4 | 196.9 | Up | 09:49:53 - 10:19:53 | 8169 |
| Oregon Observatory | 10:04:54 | -18.2 | Dark | Up | 46.5 | 196.8 | Up | 09:49:54 - 10:19:54 | 8154 |
| La Pine/Gilchrist | 10:04:54 | -18.4 | Dark | Up | 46.8 | 196.8 | Up | 09:49:54 - 10:19:54 | 8138 |
| North Lake | 10:04:51 | -18.6 | Dark | Up | 47.0 | 197.7 | Up | 09:49:51 - 10:19:51 | 8106 |
| Paisley | 10:04:49 | -18.9 | Dark | Up | 47.5 | 198.4 | Up | 09:49:49 - 10:19:49 | 8063 |
| Chiloquin | 10:04:53 | -19.5 | Dark | Up | 47.9 | 196.6 | Up | 09:49:53 - 10:19:53 | 8044 |
| Lakeview | 10:04:48 | -19.3 | Dark | Up | 47.9 | 198.9 | Up | 09:49:48 - 10:19:48 | 8023 |
| Klamath Falls | 10:04:53 | -19.8 | Dark | Up | 48.2 | 196.8 | Up | 09:49:53 - 10:19:53 | 8016 |
| Cedarville | 10:04:48 | -19.8 | Dark | Up | 48.5 | 199.4 | Up | 09:49:48 - 10:19:48 | 7969 |
| Dunrhomin | 10:03:54 | -14.0 | AT | Up | 44.0 | 219.9 | Up | 09:48:54 - 10:18:54 | 7963 |
| Fall River/Burney | 10:04:50 | -20.6 | Dark | Up | 49.3 | 197.8 | Up | 09:49:50 - 10:19:50 | 7920 |
| Susanville | 10:04:47 | -20.9 | Dark | Up | 49.7 | 199.1 | Up | 09:49:47 - 10:19:47 | 7871 |
| Gimple | 10:04:49 | -21.2 | Dark | Up | 50.0 | 198.9 | Up | 09:49:49 - 10:19:49 | 7846 |
| Greenville | 10:04:48 | -21.3 | Dark | Up | 50.0 | 198.8 | Up | 09:49:48 - 10:19:48 | 7846 |
| Quincy | 10:04:48 | -21.4 | Dark | Up | 50.2 | 198.8 | Up | 09:49:48 - 10:19:48 | 7828 |
| Portola | 10:04:46 | -21.4 | Dark | Up | 50.2 | 199.6 | Up | 09:49:46 - 10:19:46 | 7821 |
| Reno | 10:04:43 | -21.3 | Dark | Up | 50.3 | 200.7 | Up | 09:49:43 - 10:19:43 | 7803 |
| Carson City | 10:04:43 | -21.6 | Dark | Up | 50.6 | 200.9 | Up | 09:49:43 - 10:19:43 | 7772 |
| Yerington | 10:04:41 | -21.5 | Dark | Up | 50.6 | 201.9 | Up | 09:49:41 - 10:19:41 | 7759 |
| Gardnerville | 10:04:43 | -21.8 | Dark | Up | 50.8 | 201.0 | Up | 09:49:43 - 10:19:43 | 7751 |
| Hawthorne | 10:04:38 | -21.7 | Dark | Up | 50.9 | 202.9 | Up | 09:49:38 - 10:19:38 | 7722 |
| Tonopah | 10:04:32 | -21.5 | Dark | Up | 50.9 | 205.2 | Up | 09:49:32 - 10:19:32 | 7692 |
| Lee Vining | 10:04:39 | -22.4 | Dark | Up | 51.6 | 202.4 | Up | 09:49:39 - 10:19:39 | 7670 |
| Bishop | 10:04:36 | -22.6 | Dark | Up | 51.9 | 203.8 | Up | 09:49:36 - 10:19:36 | 7622 |
| Beatty | 10:04:30 | -22.2 | Dark | Up | 51.8 | 206.5 | Up | 09:49:30 - 10:19:30 | 7592 |
| Indian Springs | 10:04:25 | -22.0 | Dark | Up | 51.7 | 208.3 | Up | 09:49:25 - 10:19:25 | 7571 |
| Henderson | 10:04:22 | -22.1 | Dark | Up | 51.9 | 209.6 | Up | 09:49:22 - 10:19:22 | 7528 |
| Patrick | 10:04:17 | -22.1 | Dark | Up | 51.9 | 211.7 | Up | 09:49:17 - 10:19:17 | 7479 |
| Kingman/Dolan Springs | 10:04:17 | -22.4 | Dark | Up | 52.2 | 211.5 | Up | 09:49:17 - 10:19:17 | 7458 |
| Laughlin/Bullhead City | 10:04:19 | -22.6 | Dark | Up | 52.5 | 210.8 | Up | 09:49:19 - 10:19:19 | 7452 |
| Mohave Valley | 10:04:19 | -22.9 | Dark | Up | 52.7 | 211.0 | Up | 09:49:19 - 10:19:19 | 7427 |
| CPSLO | 10:04:43 | -25.3 | Dark | Up | 54.5 | 201.3 | Up | 09:49:43 - 10:19:43 | 7420 |
| Lake Havasu City | 10:04:17 | -23.0 | Dark | Up | 52.9 | 211.6 | Up | 09:49:17 - 10:19:17 | 7392 |
| Parker | 10:04:18 | -23.3 | Dark | Up | 53.2 | 211.9 | Up | 09:49:18 - 10:19:18 | 7360 |
| George/Scottsdale | 10:04:07 | -22.4 | Dark | Up | 52.5 | 215.7 | Up | 09:49:07 - 10:19:07 | 7339 |
| Wildwood | 10:04:34 | -25.4 | Dark | Up | 54.9 | 205.3 | Up | 09:49:34 - 10:19:34 | 7324 |
| Blythe | 10:04:18 | -23.9 | Dark | Up | 53.8 | 211.8 | Up | 09:49:18 - 10:19:18 | 7310 |
| Idyllwild | 10:04:26 | -24.8 | Dark | Up | 54.6 | 208.5 | Up | 09:49:26 - 10:19:26 | 7306 |
| Calipatria | 10:04:21 | -24.7 | Dark | Up | 54.6 | 210.8 | Up | 09:49:21 - 10:19:21 | 7257 |
| Yuma | 10:04:16 | -24.6 | Dark | Up | 54.6 | 212.4 | Up | 09:49:16 - 10:19:16 | 7224 |
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 07LJ38, (2021/06/03 10:05UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 35.82 106 60Bet Oph 17:43:28.3 +04:34:06 2.8 5.39 93 70 Oph 18:05:27.8 +02:29:35 4.9 1.28 87 PPM 165060 18:02:49.6 +01:36:08 8.5 0.30 88 PPM 165004 18:01:15.3 +01:45:42 9.0 0.15 88 PPM 165022 18:01:41.8 +01:32:43 10.6 0.10 88 07LJ38 18:01:37.8 +01:38:34 16.1 88 Positions are for J2000
Event circumstances last updated at 2021/04/19 23:03:40 UT
Marc W. Buie, Southwest Research Institute