Event between 12UL177 and star GA1200:00462550 with event index number of 2306922
Geocentric closest approach at 2022/12/20 10:07:00 UTC
J2000 position of star is 02:48:42.4 +30:21:27
Equinox of date position of star is 02:50:01.0 +30:26:50
Stellar brightness G=15.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 167 degrees from the moon.
Moon is 12% illuminated.
TNO apparent brightness V=23.0
[RECON map]
TNO is 36.0 AU from the Sun
and 35.3 AU from the Earth.
The TNO is moving 19.1
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 146 seconds.
The 1-sigma cross-track error in the shadow position is
1973 km.
The sky-plane scale is
25571.5 km/arcsec.
The TNO has an absolute magnitude Hv=7.4
Diameter=193.2 km assuming a 5% albedo -- 10.4 sec chord
Diameter=78.9 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is SCATEXTD
Star training set for 12UL177, (2022/12/20 10:07UT) Object RA Dec mag sep mel Aldebaran 04:37:14.5 +16:33:13 0.8 28.11 157 Algol 03:09:40.3 +41:02:33 2.1 11.31 156 39 Ari 02:49:17.0 +29:20:28 5.6 1.12 168 PPM 067804 02:51:23.3 +30:37:12 7.2 0.33 167 PPM 067767 02:49:41.6 +30:26:15 9.3 0.09 167 12UL177 02:50:05.1 +30:27:07 15.1 167 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 28.1 km
RECON observability=1.0 and success probability=16.1%
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 | 10:02:17 | -53.5 | Dark | Down | 30.2 | 282.4 | Up | 09:49:37 - 10:14:57 | -1706 |
Kelowna | 10:02:17 | -53.8 | Dark | Down | 30.2 | 282.5 | Up | 09:49:37 - 10:14:57 | -1750 |
Peachland | 10:02:17 | -54.0 | Dark | Down | 30.4 | 282.4 | Up | 09:49:37 - 10:14:57 | -1768 |
Summerland | 10:02:17 | -54.1 | Dark | Down | 30.3 | 282.5 | Up | 09:49:37 - 10:14:57 | -1782 |
Penticton | 10:02:16 | -54.0 | Dark | Down | 30.2 | 282.7 | Up | 09:49:36 - 10:14:56 | -1787 |
Oliver | 10:02:16 | -54.2 | Dark | Down | 30.1 | 282.9 | Up | 09:49:36 - 10:14:56 | -1824 |
Anarchist Mountain Observatory | 10:02:15 | -54.2 | Dark | Down | 29.9 | 283.1 | Low | 09:49:35 - 10:14:55 | -1838 |
Tonasket | 10:02:15 | -54.5 | Dark | Down | 29.9 | 283.2 | Low | 09:49:35 - 10:14:55 | -1872 |
Okanogan | 10:02:15 | -54.7 | Dark | Down | 29.9 | 283.3 | Low | 09:49:35 - 10:14:55 | -1911 |
Brewster | 10:02:15 | -55.0 | Dark | Down | 30.0 | 283.3 | Up | 09:49:35 - 10:14:55 | -1944 |
Victoria | 10:02:22 | -56.7 | Dark | Down | 32.4 | 280.7 | Up | 09:49:42 - 10:15:02 | -1967 |
Manson/Chelan | 10:02:15 | -55.3 | Dark | Down | 30.2 | 283.2 | Up | 09:49:35 - 10:14:55 | -1974 |
Wenatchee | 10:02:15 | -55.7 | Dark | Down | 30.2 | 283.3 | Up | 09:49:35 - 10:14:55 | -2028 |
Ellensburg | 10:02:15 | -56.0 | Dark | Down | 30.3 | 283.4 | Up | 09:49:35 - 10:14:55 | -2077 |
Yakima | 10:02:15 | -56.2 | Dark | Down | 30.2 | 283.7 | Up | 09:49:35 - 10:14:55 | -2121 |
Pasco | 10:02:11 | -55.6 | Dark | Down | 29.1 | 284.7 | Low | 09:49:31 - 10:14:51 | -2126 |
Toppenish/White Swan | 10:02:14 | -56.3 | Dark | Down | 30.0 | 283.9 | Up | 09:49:34 - 10:14:54 | -2140 |
PNWRO | 10:02:11 | -55.6 | Dark | Down | 28.9 | 285.0 | Low | 09:49:31 - 10:14:51 | -2148 |
Goldendale | 10:02:14 | -56.8 | Dark | Down | 30.2 | 283.9 | Up | 09:49:34 - 10:14:54 | -2208 |
The Dalles | 10:02:15 | -57.1 | Dark | Down | 30.4 | 283.8 | Up | 09:49:35 - 10:14:55 | -2240 |
Maupin | 10:02:14 | -57.3 | Dark | Down | 30.2 | 284.1 | Up | 09:49:34 - 10:14:54 | -2283 |
Dunrhomin | 10:01:45 | -48.1 | Dark | Down | 17.6 | 295.2 | Really Low | 09:49:05 - 10:14:25 | -2340 |
Redmond | 10:02:13 | -57.8 | Dark | Down | 30.0 | 284.6 | Up | 09:49:33 - 10:14:53 | -2381 |
Sisters | 10:02:14 | -58.1 | Dark | Down | 30.3 | 284.3 | Up | 09:49:34 - 10:14:54 | -2387 |
Bend | 10:02:14 | -58.0 | Dark | Down | 30.1 | 284.6 | Up | 09:49:34 - 10:14:54 | -2407 |
Oregon Observatory | 10:02:14 | -58.2 | Dark | Down | 30.1 | 284.6 | Up | 09:49:34 - 10:14:54 | -2429 |
La Pine/Gilchrist | 10:02:14 | -58.3 | Dark | Down | 30.1 | 284.7 | Up | 09:49:34 - 10:14:54 | -2452 |
North Lake | 10:02:12 | -58.2 | Dark | Down | 29.6 | 285.3 | Low | 09:49:32 - 10:14:52 | -2486 |
Paisley | 10:02:11 | -58.2 | Dark | Down | 29.2 | 285.8 | Low | 09:49:31 - 10:14:51 | -2537 |
Chiloquin | 10:02:14 | -59.1 | Dark | Down | 30.1 | 285.1 | Up | 09:49:34 - 10:14:54 | -2579 |
Lakeview | 10:02:11 | -58.3 | Dark | Down | 28.9 | 286.2 | Low | 09:49:31 - 10:14:51 | -2587 |
Klamath Falls | 10:02:13 | -59.2 | Dark | Down | 29.9 | 285.4 | Low | 09:49:33 - 10:14:53 | -2614 |
Cedarville | 10:02:09 | -58.5 | Dark | Down | 28.6 | 286.6 | Low | 09:49:29 - 10:14:49 | -2654 |
Fall River/Burney | 10:02:12 | -59.5 | Dark | Down | 29.3 | 286.2 | Low | 09:49:32 - 10:14:52 | -2733 |
Susanville | 10:02:10 | -59.3 | Dark | Down | 28.6 | 287.0 | Low | 09:49:30 - 10:14:50 | -2784 |
Gimple | 10:02:10 | -59.5 | Dark | Down | 28.7 | 287.0 | Low | 09:49:30 - 10:14:50 | -2818 |
Greenville | 10:02:10 | -59.6 | Dark | Down | 28.8 | 286.9 | Low | 09:49:30 - 10:14:50 | -2820 |
Quincy | 10:02:10 | -59.7 | Dark | Down | 28.7 | 287.0 | Low | 09:49:30 - 10:14:50 | -2841 |
Portola | 10:02:09 | -59.4 | Dark | Down | 28.3 | 287.4 | Low | 09:49:29 - 10:14:49 | -2844 |
Reno | 10:02:08 | -59.0 | Dark | Down | 27.8 | 287.8 | Low | 09:49:28 - 10:14:48 | -2857 |
Carson City | 10:02:07 | -59.1 | Dark | Down | 27.6 | 288.0 | Low | 09:49:27 - 10:14:47 | -2895 |
Yerington | 10:02:07 | -58.8 | Dark | Down | 27.1 | 288.4 | Low | 09:49:27 - 10:14:47 | -2900 |
Gardnerville | 10:02:08 | -59.2 | Dark | Down | 27.5 | 288.2 | Low | 09:49:28 - 10:14:48 | -2920 |
Hawthorne | 10:02:05 | -58.5 | Dark | Down | 26.6 | 288.9 | Low | 09:49:25 - 10:14:45 | -2937 |
Tonopah | 10:02:02 | -57.6 | Dark | Down | 25.4 | 289.8 | Low | 09:49:22 - 10:14:42 | -2950 |
Lee Vining | 10:02:06 | -59.1 | Dark | Down | 26.7 | 288.9 | Low | 09:49:26 - 10:14:46 | -3009 |
Bishop | 10:02:04 | -58.7 | Dark | Down | 26.0 | 289.6 | Low | 09:49:24 - 10:14:44 | -3054 |
Beatty | 10:02:00 | -57.6 | Dark | Down | 24.6 | 290.5 | Low | 09:49:20 - 10:14:40 | -3059 |
Indian Springs | 10:01:58 | -56.8 | Dark | Down | 23.7 | 291.2 | Low | 09:49:18 - 10:14:38 | -3063 |
Henderson | 10:01:57 | -56.4 | Dark | Down | 23.0 | 291.7 | Low | 09:49:17 - 10:14:37 | -3098 |
Patrick | 10:01:55 | -55.7 | Dark | Down | 21.9 | 292.5 | Low | 09:49:15 - 10:14:35 | -3130 |
Kingman/Dolan Springs | 10:01:55 | -55.9 | Dark | Down | 22.0 | 292.5 | Low | 09:49:15 - 10:14:35 | -3159 |
Laughlin/Bullhead City | 10:01:56 | -56.3 | Dark | Down | 22.4 | 292.2 | Low | 09:49:16 - 10:14:36 | -3177 |
Mohave Valley | 10:01:56 | -56.3 | Dark | Down | 22.3 | 292.4 | Low | 09:49:16 - 10:14:36 | -3205 |
Lake Havasu City | 10:01:56 | -56.2 | Dark | Down | 21.9 | 292.6 | Low | 09:49:16 - 10:14:36 | -3239 |
George/Scottsdale | 10:01:51 | -54.3 | Dark | Down | 19.8 | 294.0 | Really Low | 09:49:11 - 10:14:31 | -3240 |
Parker | 10:01:56 | -56.2 | Dark | Down | 21.8 | 292.8 | Low | 09:49:16 - 10:14:36 | -3275 |
CPSLO | 10:02:09 | -61.0 | Dark | Down | 27.0 | 289.5 | Low | 09:49:29 - 10:14:49 | -3328 |
Blythe | 10:01:56 | -56.5 | Dark | Down | 21.8 | 292.8 | Low | 09:49:16 - 10:14:36 | -3338 |
Idyllwild | 10:02:00 | -58.2 | Dark | Down | 23.5 | 291.9 | Low | 09:49:20 - 10:14:40 | -3389 |
Wildwood | 10:02:04 | -59.7 | Dark | Down | 25.0 | 290.9 | Low | 09:49:24 - 10:14:44 | -3404 |
Calipatria | 10:01:58 | -57.4 | Dark | Down | 22.3 | 292.6 | Low | 09:49:18 - 10:14:38 | -3418 |
Yuma | 10:01:56 | -56.7 | Dark | Down | 21.5 | 293.1 | Low | 09:49:16 - 10:14:36 | -3435 |
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 12UL177, (2022/12/20 10:07UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 28.11 157 Algol 03:08:10.1 +40:57:20 2.1 11.31 156 39 Ari 02:47:54.8 +29:14:46 5.6 1.12 168 PPM 067804 02:50:00.4 +30:31:33 7.2 0.33 167 PPM 067767 02:48:18.9 +30:20:34 9.3 0.09 167 12UL177 02:48:42.4 +30:21:27 15.1 167 Positions are for J2000
Event circumstances last updated at 2021/10/27 00:00:28 UT
Marc W. Buie, Southwest Research Institute