Event between 11QF99 and star GA1040:00951186 with event index number of 1312976
Geocentric closest approach at 2023/12/18 11:19:21 UTC
J2000 position of star is 05:33:28.7 +15:41:15
Equinox of date position of star is 05:34:41.5 +15:42:03
Stellar brightness G=13.2,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 104 degrees from the moon.
Moon is 35% illuminated.
TNO apparent brightness V=22.1
[RECON map]
TNO is 17.2 AU from the Sun
and 16.3 AU from the Earth.
The TNO is moving 22.9
km/sec on the sky relative to the star, or,
7.0 arcsec/hr.
The 1-sigma error in the time of the event is 233 seconds.
The 1-sigma cross-track error in the shadow position is
852 km.
The sky-plane scale is
11799.8 km/arcsec.
The TNO has an absolute magnitude Hv=9.8
Diameter=66.4 km assuming a 5% albedo -- 2.9 sec chord
Diameter=27.1 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
Star training set for 11QF99, (2023/12/18 11:19UT) Object RA Dec mag sep mel Betelgeuse 05:56:28.2 +07:24:34 0.4 9.84 108 Bellatrix 05:26:25.1 +06:22:10 1.6 9.56 100 PPM 121025 05:31:48.6 +15:22:37 6.0 0.80 103 PPM 121111 05:35:22.5 +15:35:57 7.9 0.16 104 PPM 121097 05:34:50.8 +15:37:13 9.4 0.08 104 11QF99 05:34:51.3 +15:42:09 13.2 104 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
3.9 sigma about the mid-time.
The median site spacing is 25.2 km
RECON observability=1.0 and success probability=10.8%
| 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 | 11:16:44 | -42.6 | Dark | Down | 35.1 | 250.8 | Up | 11:01:44 - 11:31:44 | 3070 |
| Kelowna | 11:16:44 | -42.8 | Dark | Down | 35.4 | 250.9 | Up | 11:01:44 - 11:31:44 | 3034 |
| Peachland | 11:16:44 | -43.0 | Dark | Down | 35.6 | 250.7 | Up | 11:01:44 - 11:31:44 | 3021 |
| Summerland | 11:16:43 | -43.0 | Dark | Down | 35.6 | 250.9 | Up | 11:01:43 - 11:31:43 | 3009 |
| Penticton | 11:16:43 | -42.9 | Dark | Down | 35.5 | 251.0 | Up | 11:01:43 - 11:31:43 | 3004 |
| Oliver | 11:16:42 | -43.0 | Dark | Down | 35.6 | 251.3 | Up | 11:01:42 - 11:31:42 | 2973 |
| Anarchist Mountain Observatory | 11:16:41 | -42.9 | Dark | Down | 35.6 | 251.6 | Up | 11:01:41 - 11:31:41 | 2960 |
| Tonasket | 11:16:41 | -43.0 | Dark | Down | 35.7 | 251.7 | Up | 11:01:41 - 11:31:41 | 2931 |
| Okanogan | 11:16:40 | -43.2 | Dark | Down | 35.9 | 251.8 | Up | 11:01:40 - 11:31:40 | 2899 |
| Brewster | 11:16:40 | -43.4 | Dark | Down | 36.1 | 251.8 | Up | 11:01:40 - 11:31:40 | 2872 |
| Victoria | 11:16:49 | -45.6 | Dark | Down | 38.2 | 248.2 | Up | 11:01:49 - 11:31:49 | 2869 |
| Manson/Chelan | 11:16:40 | -43.7 | Dark | Down | 36.4 | 251.6 | Up | 11:01:40 - 11:31:40 | 2849 |
| Wenatchee | 11:16:39 | -43.9 | Dark | Down | 36.7 | 251.8 | Up | 11:01:39 - 11:31:39 | 2804 |
| Ellensburg | 11:16:38 | -44.2 | Dark | Down | 37.0 | 251.9 | Up | 11:01:38 - 11:31:38 | 2763 |
| Yakima | 11:16:38 | -44.3 | Dark | Down | 37.1 | 252.2 | Up | 11:01:38 - 11:31:38 | 2726 |
| Pasco | 11:16:34 | -43.4 | Dark | Down | 36.3 | 253.6 | Up | 11:01:34 - 11:31:34 | 2712 |
| Toppenish/White Swan | 11:16:37 | -44.2 | Dark | Down | 37.1 | 252.5 | Up | 11:01:37 - 11:31:37 | 2708 |
| PNWRO | 11:16:33 | -43.3 | Dark | Down | 36.2 | 254.0 | Up | 11:01:33 - 11:31:33 | 2693 |
| Goldendale | 11:16:36 | -44.6 | Dark | Down | 37.5 | 252.5 | Up | 11:01:36 - 11:31:36 | 2651 |
| The Dalles | 11:16:37 | -44.9 | Dark | Down | 37.8 | 252.3 | Up | 11:01:37 - 11:31:37 | 2626 |
| Maupin | 11:16:36 | -44.9 | Dark | Down | 37.9 | 252.7 | Up | 11:01:36 - 11:31:36 | 2588 |
| Redmond | 11:16:34 | -45.2 | Dark | Down | 38.2 | 253.3 | Up | 11:01:34 - 11:31:34 | 2502 |
| Sisters | 11:16:35 | -45.5 | Dark | Down | 38.5 | 253.0 | Up | 11:01:35 - 11:31:35 | 2499 |
| Bend | 11:16:33 | -45.3 | Dark | Down | 38.4 | 253.4 | Up | 11:01:33 - 11:31:33 | 2480 |
| Oregon Observatory | 11:16:33 | -45.5 | Dark | Down | 38.5 | 253.4 | Up | 11:01:33 - 11:31:33 | 2462 |
| La Pine/Gilchrist | 11:16:33 | -45.5 | Dark | Down | 38.6 | 253.5 | Up | 11:01:33 - 11:31:33 | 2442 |
| North Lake | 11:16:30 | -45.2 | Dark | Down | 38.3 | 254.3 | Up | 11:01:30 - 11:31:30 | 2408 |
| Dunrhomin | 11:15:53 | -33.8 | Dark | Down | 27.3 | 267.8 | Low | 11:00:53 - 11:30:53 | 2369 |
| Paisley | 11:16:28 | -45.0 | Dark | Down | 38.2 | 255.0 | Up | 11:01:28 - 11:31:28 | 2360 |
| Chiloquin | 11:16:31 | -46.0 | Dark | Down | 39.2 | 254.0 | Up | 11:01:31 - 11:31:31 | 2331 |
| Lakeview | 11:16:27 | -45.0 | Dark | Down | 38.2 | 255.6 | Up | 11:01:27 - 11:31:27 | 2314 |
| Klamath Falls | 11:16:30 | -46.0 | Dark | Down | 39.2 | 254.4 | Up | 11:01:30 - 11:31:30 | 2299 |
| Cedarville | 11:16:25 | -44.9 | Dark | Down | 38.3 | 256.2 | Up | 11:01:25 - 11:31:25 | 2253 |
| Fall River/Burney | 11:16:27 | -45.9 | Dark | Down | 39.3 | 255.6 | Up | 11:01:27 - 11:31:27 | 2189 |
| Susanville | 11:16:24 | -45.5 | Dark | Down | 38.9 | 256.7 | Up | 11:01:24 - 11:31:24 | 2138 |
| Gimple | 11:16:24 | -45.6 | Dark | Down | 39.1 | 256.7 | Up | 11:01:24 - 11:31:24 | 2107 |
| Greenville | 11:16:24 | -45.7 | Dark | Down | 39.2 | 256.7 | Up | 11:01:24 - 11:31:24 | 2106 |
| Quincy | 11:16:24 | -45.7 | Dark | Down | 39.2 | 256.8 | Up | 11:01:24 - 11:31:24 | 2087 |
| Portola | 11:16:22 | -45.4 | Dark | Down | 38.9 | 257.3 | Up | 11:01:22 - 11:31:22 | 2081 |
| Reno | 11:16:20 | -44.9 | Dark | Down | 38.5 | 258.0 | Up | 11:01:20 - 11:31:20 | 2064 |
| Carson City | 11:16:19 | -44.9 | Dark | Down | 38.5 | 258.3 | Up | 11:01:19 - 11:31:19 | 2028 |
| Yerington | 11:16:17 | -44.5 | Dark | Down | 38.1 | 258.9 | Up | 11:01:17 - 11:31:17 | 2018 |
| Gardnerville | 11:16:19 | -44.9 | Dark | Down | 38.5 | 258.5 | Up | 11:01:19 - 11:31:19 | 2005 |
| Hawthorne | 11:16:15 | -44.1 | Dark | Down | 37.8 | 259.7 | Up | 11:01:15 - 11:31:15 | 1980 |
| Tonopah | 11:16:11 | -43.0 | Dark | Down | 36.8 | 261.0 | Up | 11:01:11 - 11:31:11 | 1955 |
| Lee Vining | 11:16:15 | -44.5 | Dark | Down | 38.2 | 259.7 | Up | 11:01:15 - 11:31:15 | 1917 |
| Bishop | 11:16:12 | -44.0 | Dark | Down | 37.8 | 260.7 | Up | 11:01:12 - 11:31:12 | 1867 |
| Beatty | 11:16:08 | -42.7 | Dark | Down | 36.6 | 262.2 | Up | 11:01:08 - 11:31:08 | 1846 |
| Indian Springs | 11:16:05 | -41.9 | Dark | Down | 35.8 | 263.1 | Up | 11:01:05 - 11:31:05 | 1830 |
| Henderson | 11:16:02 | -41.3 | Dark | Down | 35.3 | 264.0 | Up | 11:01:02 - 11:31:02 | 1788 |
| Patrick | 11:15:58 | -40.4 | Dark | Down | 34.5 | 265.1 | Up | 11:00:58 - 11:30:58 | 1743 |
| Kingman/Dolan Springs | 11:15:58 | -40.5 | Dark | Down | 34.6 | 265.1 | Up | 11:00:58 - 11:30:58 | 1718 |
| Laughlin/Bullhead City | 11:15:59 | -41.0 | Dark | Down | 35.1 | 264.8 | Up | 11:00:59 - 11:30:59 | 1707 |
| Mohave Valley | 11:15:59 | -40.9 | Dark | Down | 35.1 | 265.0 | Up | 11:00:59 - 11:30:59 | 1679 |
| Lake Havasu City | 11:15:58 | -40.7 | Dark | Down | 34.9 | 265.4 | Up | 11:00:58 - 11:30:58 | 1643 |
| CPSLO | 11:16:14 | -45.9 | Dark | Down | 39.9 | 260.8 | Up | 11:01:14 - 11:31:14 | 1626 |
| Parker | 11:15:57 | -40.7 | Dark | Down | 34.9 | 265.7 | Up | 11:00:57 - 11:30:57 | 1608 |
| George/Scottsdale | 11:15:51 | -38.7 | Dark | Down | 32.9 | 267.4 | Up | 11:00:51 - 11:30:51 | 1607 |
| Blythe | 11:15:56 | -40.9 | Dark | Down | 35.2 | 265.9 | Up | 11:00:56 - 11:30:56 | 1549 |
| Wildwood | 11:16:07 | -44.2 | Dark | Down | 38.4 | 263.1 | Up | 11:01:07 - 11:31:07 | 1533 |
| Idyllwild | 11:16:02 | -42.7 | Dark | Down | 36.9 | 264.5 | Up | 11:01:02 - 11:31:02 | 1527 |
| Calipatria | 11:15:58 | -41.7 | Dark | Down | 36.0 | 265.7 | Up | 11:00:58 - 11:30:58 | 1483 |
| Yuma | 11:15:55 | -40.9 | Dark | Down | 35.3 | 266.5 | Up | 11:00:55 - 11:30:55 | 1454 |
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 11QF99, (2023/12/18 11:19UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 9.84 108 Bellatrix 05:25:07.8 +06:20:58 1.6 9.56 100 PPM 121025 05:30:26.1 +15:21:37 6.0 0.80 103 PPM 121111 05:33:59.9 +15:35:04 7.9 0.16 104 PPM 121097 05:33:28.3 +15:36:19 9.4 0.08 104 11QF99 05:33:28.7 +15:41:15 13.2 104 Positions are for J2000
Event circumstances last updated at 2021/02/14 20:54:46 UT
Marc W. Buie, Southwest Research Institute