Event between 11BQ170 and star GA0840:04088470 with event index number of 1577117
Geocentric closest approach at 2023/03/15 07:03:55 UTC
J2000 position of star is 11:55:06.1 -04:12:25
Equinox of date position of star is 11:56:11.4 -04:19:31
Stellar brightness G=11.5,
use SENSEUP=8 with the MallinCam and and exposure
time of 125 milli-seconds with the QHY174 camera.
Star is 86 degrees from the moon.
Moon is 48% illuminated.
TNO apparent brightness V=22.1
[RECON map]
TNO is 37.8 AU from the Sun
and 36.9 AU from the Earth.
The TNO is moving 24.5
km/sec on the sky relative to the star, or,
3.3 arcsec/hr.
The 1-sigma error in the time of the event is 351 seconds.
The 1-sigma cross-track error in the shadow position is
4853 km.
The sky-plane scale is
26735.6 km/arcsec.
The TNO has an absolute magnitude Hv=6.4
Diameter=317.7 km assuming a 5% albedo -- 12.9 sec chord
Diameter=129.7 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is CLASSICAL
Star training set for 11BQ170, (2023/03/15 07:04UT) Object RA Dec mag sep mel Spica 13:26:25.1 -11:16:54 1.0 23.36 63 4Gam Crv 12:17:00.2 -17:40:14 2.6 14.27 76 PPM 194890 11:52:13.5 -05:27:45 5.6 1.51 87 PPM 194933 11:54:38.8 -04:00:46 8.1 0.52 87 PPM 194971 11:56:52.4 -04:10:33 8.8 0.22 86 11BQ170 11:56:17.4 -04:20:09 11.5 86 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
2.6 sigma about the mid-time.
The median site spacing is 16.7 km
RECON observability=1.0 and success probability=6.8%
| 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 | 07:06:12 | -40.3 | Dark | Down | 33.2 | 157.3 | Up | 06:51:12 - 07:21:12 | 3293 |
| Kelowna | 07:06:12 | -40.6 | Dark | Down | 33.5 | 157.0 | Up | 06:51:12 - 07:21:12 | 3260 |
| Peachland | 07:06:13 | -40.7 | Dark | Down | 33.5 | 156.7 | Up | 06:51:13 - 07:21:13 | 3244 |
| Summerland | 07:06:13 | -40.8 | Dark | Down | 33.7 | 156.7 | Up | 06:51:13 - 07:21:13 | 3236 |
| Penticton | 07:06:12 | -40.9 | Dark | Down | 33.8 | 156.8 | Up | 06:51:12 - 07:21:12 | 3234 |
| Oliver | 07:06:12 | -41.3 | Dark | Down | 34.1 | 156.7 | Up | 06:51:12 - 07:21:12 | 3209 |
| Anarchist Mountain Observatory | 07:06:12 | -41.5 | Dark | Down | 34.3 | 156.9 | Up | 06:51:12 - 07:21:12 | 3203 |
| Tonasket | 07:06:12 | -41.7 | Dark | Down | 34.6 | 156.8 | Up | 06:51:12 - 07:21:12 | 3178 |
| Okanogan | 07:06:12 | -42.0 | Dark | Down | 34.8 | 156.5 | Up | 06:51:12 - 07:21:12 | 3149 |
| Brewster | 07:06:13 | -42.2 | Dark | Down | 35.0 | 156.2 | Up | 06:51:13 - 07:21:13 | 3123 |
| Manson/Chelan | 07:06:14 | -42.3 | Dark | Down | 35.1 | 155.7 | Up | 06:51:14 - 07:21:14 | 3096 |
| Wenatchee | 07:06:14 | -42.7 | Dark | Down | 35.5 | 155.3 | Up | 06:51:14 - 07:21:14 | 3055 |
| Victoria | 07:06:22 | -40.9 | Dark | Down | 33.6 | 152.2 | Up | 06:51:22 - 07:21:22 | 3045 |
| Dunrhomin | 07:05:26 | -51.9 | Dark | Down | 45.3 | 173.0 | Up | 06:50:26 - 07:20:26 | 3027 |
| Ellensburg | 07:06:15 | -43.0 | Dark | Down | 35.8 | 155.0 | Up | 06:51:15 - 07:21:15 | 3018 |
| Pasco | 07:06:10 | -44.1 | Dark | Down | 36.9 | 156.4 | Up | 06:51:10 - 07:21:10 | 3006 |
| PNWRO | 07:06:10 | -44.4 | Dark | Down | 37.2 | 156.6 | Up | 06:51:10 - 07:21:10 | 2995 |
| Yakima | 07:06:15 | -43.4 | Dark | Down | 36.2 | 154.8 | Up | 06:51:15 - 07:21:15 | 2986 |
| Toppenish/White Swan | 07:06:14 | -43.7 | Dark | Down | 36.4 | 155.0 | Up | 06:51:14 - 07:21:14 | 2975 |
| Goldendale | 07:06:15 | -44.1 | Dark | Down | 36.8 | 154.3 | Up | 06:51:15 - 07:21:15 | 2920 |
| The Dalles | 07:06:16 | -44.2 | Dark | Down | 36.9 | 153.8 | Up | 06:51:16 - 07:21:16 | 2890 |
| Maupin | 07:06:16 | -44.6 | Dark | Down | 37.3 | 153.8 | Up | 06:51:16 - 07:21:16 | 2861 |
| Redmond | 07:06:16 | -45.4 | Dark | Down | 38.1 | 153.3 | Up | 06:51:16 - 07:21:16 | 2788 |
| Sisters | 07:06:17 | -45.2 | Dark | Down | 37.9 | 152.9 | Up | 06:51:17 - 07:21:17 | 2777 |
| Bend | 07:06:15 | -45.5 | Dark | Down | 38.2 | 153.1 | Up | 06:51:15 - 07:21:15 | 2767 |
| Oregon Observatory | 07:06:16 | -45.6 | Dark | Down | 38.3 | 152.9 | Up | 06:51:16 - 07:21:16 | 2749 |
| La Pine/Gilchrist | 07:06:16 | -45.8 | Dark | Down | 38.5 | 152.7 | Up | 06:51:16 - 07:21:16 | 2730 |
| North Lake | 07:06:15 | -46.4 | Dark | Down | 39.1 | 153.3 | Up | 06:51:15 - 07:21:15 | 2716 |
| Paisley | 07:06:14 | -47.0 | Dark | Down | 39.7 | 153.5 | Up | 06:51:14 - 07:21:14 | 2684 |
| Lakeview | 07:06:13 | -47.5 | Dark | Down | 40.2 | 153.6 | Up | 06:51:13 - 07:21:13 | 2649 |
| Chiloquin | 07:06:17 | -46.7 | Dark | Down | 39.4 | 151.9 | Up | 06:51:17 - 07:21:17 | 2629 |
| Klamath Falls | 07:06:17 | -47.0 | Dark | Down | 39.7 | 151.8 | Up | 06:51:17 - 07:21:17 | 2604 |
| Cedarville | 07:06:12 | -48.2 | Dark | Down | 40.8 | 153.5 | Up | 06:51:12 - 07:21:12 | 2602 |
| Fall River/Burney | 07:06:15 | -48.2 | Dark | Down | 40.9 | 151.8 | Up | 06:51:15 - 07:21:15 | 2520 |
| Susanville | 07:06:13 | -49.0 | Dark | Down | 41.7 | 152.5 | Up | 06:51:13 - 07:21:13 | 2494 |
| Gimple | 07:06:14 | -49.2 | Dark | Down | 41.8 | 152.1 | Up | 06:51:14 - 07:21:14 | 2464 |
| Greenville | 07:06:14 | -49.2 | Dark | Down | 41.8 | 152.0 | Up | 06:51:14 - 07:21:14 | 2461 |
| Reno | 07:06:10 | -50.1 | Dark | Down | 42.7 | 153.2 | Up | 06:51:10 - 07:21:10 | 2452 |
| Portola | 07:06:11 | -49.6 | Dark | Down | 42.3 | 152.5 | Up | 06:51:11 - 07:21:11 | 2451 |
| Quincy | 07:06:14 | -49.4 | Dark | Down | 42.0 | 151.9 | Up | 06:51:14 - 07:21:14 | 2444 |
| Yerington | 07:06:08 | -50.8 | Dark | Down | 43.5 | 153.8 | Up | 06:51:08 - 07:21:08 | 2429 |
| Carson City | 07:06:09 | -50.4 | Dark | Down | 43.1 | 153.0 | Up | 06:51:09 - 07:21:09 | 2423 |
| Tonopah | 07:06:02 | -52.2 | Dark | Down | 44.9 | 155.9 | Up | 06:51:02 - 07:21:02 | 2421 |
| Hawthorne | 07:06:06 | -51.4 | Dark | Down | 44.1 | 154.3 | Up | 06:51:06 - 07:21:06 | 2409 |
| Gardnerville | 07:06:10 | -50.7 | Dark | Down | 43.3 | 153.0 | Up | 06:51:10 - 07:21:10 | 2404 |
| Indian Springs | 07:05:56 | -54.1 | Dark | Down | 46.8 | 157.4 | Up | 06:50:56 - 07:20:56 | 2353 |
| Lee Vining | 07:06:07 | -51.7 | Dark | Down | 44.4 | 153.4 | Up | 06:51:07 - 07:21:07 | 2344 |
| Beatty | 07:06:00 | -53.4 | Dark | Down | 46.1 | 156.0 | Up | 06:51:00 - 07:21:00 | 2341 |
| Henderson | 07:05:53 | -54.7 | Dark | Down | 47.5 | 158.1 | Up | 06:50:53 - 07:20:53 | 2334 |
| Patrick | 07:05:49 | -55.6 | Dark | Down | 48.4 | 159.4 | Up | 06:50:49 - 07:20:49 | 2323 |
| Bishop | 07:06:05 | -52.5 | Dark | Down | 45.2 | 154.1 | Up | 06:51:05 - 07:21:05 | 2320 |
| Kingman/Dolan Springs | 07:05:50 | -55.8 | Dark | Down | 48.5 | 159.0 | Up | 06:50:50 - 07:20:50 | 2297 |
| Laughlin/Bullhead City | 07:05:51 | -55.7 | Dark | Down | 48.4 | 158.3 | Up | 06:50:51 - 07:20:51 | 2275 |
| George/Scottsdale | 07:05:40 | -57.7 | Dark | Down | 50.5 | 161.7 | Up | 06:50:40 - 07:20:40 | 2256 |
| Mohave Valley | 07:05:50 | -55.9 | Dark | Down | 48.7 | 158.2 | Up | 06:50:50 - 07:20:50 | 2252 |
| Lake Havasu City | 07:05:50 | -56.4 | Dark | Down | 49.1 | 158.4 | Up | 06:50:50 - 07:20:50 | 2228 |
| Parker | 07:05:48 | -56.7 | Dark | Down | 49.4 | 158.3 | Up | 06:50:48 - 07:20:48 | 2199 |
| Blythe | 07:05:50 | -57.1 | Dark | Down | 49.8 | 157.6 | Up | 06:50:50 - 07:20:50 | 2142 |
| Idyllwild | 07:05:57 | -56.4 | Dark | Down | 49.0 | 154.6 | Up | 06:50:57 - 07:20:57 | 2071 |
| Calipatria | 07:05:53 | -57.3 | Dark | Down | 50.0 | 156.0 | Up | 06:50:53 - 07:20:53 | 2063 |
| Yuma | 07:05:49 | -58.0 | Dark | Down | 50.7 | 157.1 | Up | 06:50:49 - 07:20:49 | 2060 |
| CPSLO | 07:06:11 | -53.6 | Dark | Down | 46.1 | 150.1 | Up | 06:51:11 - 07:21:11 | 2059 |
| Wildwood | 07:06:03 | -55.4 | Dark | Down | 48.0 | 152.2 | Up | 06:51:03 - 07:21:03 | 2030 |
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 11BQ170, (2023/03/15 07:04UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 23.36 63 4Gam Crv 12:15:48.1 -17:32:30 2.6 14.27 76 PPM 194890 11:51:02.2 -05:20:00 5.6 1.51 87 PPM 194933 11:53:27.5 -03:53:01 8.1 0.52 87 PPM 194971 11:55:41.1 -04:02:49 8.8 0.22 86 11BQ170 11:55:06.1 -04:12:25 11.5 86 Positions are for J2000
Event circumstances last updated at 2021/04/12 23:44:28 UT
Marc W. Buie, Southwest Research Institute