Event between (523620) 07RH283 and star GA1240:01258955 with event index number of 1234510
Geocentric closest approach at 2023/01/23 08:20:02 UTC
J2000 position of star is 04:39:26.2 +34:06:48
Equinox of date position of star is 04:40:48.8 +34:09:12
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 110 degrees from the moon.
Moon is 4% illuminated.
TNO apparent brightness V=22.0
[RECON map]
TNO is 21.3 AU from the Sun
and 20.7 AU from the Earth.
The TNO is moving 16.0
km/sec on the sky relative to the star, or,
3.8 arcsec/hr.
The 1-sigma error in the time of the event is 109 seconds.
The 1-sigma cross-track error in the shadow position is
1320 km.
The sky-plane scale is
15005.7 km/arcsec.
The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 7.2 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is CENTAURR
Star training set for 523620, (2023/01/23 08:20UT) Object RA Dec mag sep mel Aldebaran 04:37:14.8 +16:33:14 0.8 17.62 105 3Iot Aur 04:58:30.0 +33:12:02 2.7 3.77 113 PPM 069605 04:45:18.0 +32:54:24 6.5 1.54 110 PPM 069600 04:44:35.6 +33:58:18 8.2 0.78 110 PPM 069531 04:37:55.6 +34:15:18 9.7 0.63 109 PPM 069569 04:41:01.7 +34:10:20 10.6 0.02 109 523620 04:40:56.7 +34:09:25 16.8 110 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 29.4 km
RECON observability=1.0 and success probability=32.8%
| 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 | 08:15:29 | -59.2 | Dark | Down | 45.9 | 271.1 | Up | 08:05:55 - 08:25:02 | 2013 |
| Kelowna | 08:15:29 | -59.6 | Dark | Down | 46.0 | 271.4 | Up | 08:05:55 - 08:25:02 | 1969 |
| Peachland | 08:15:30 | -59.7 | Dark | Down | 46.2 | 271.3 | Up | 08:05:56 - 08:25:03 | 1954 |
| Summerland | 08:15:29 | -59.9 | Dark | Down | 46.2 | 271.5 | Up | 08:05:56 - 08:25:03 | 1938 |
| Penticton | 08:15:29 | -59.9 | Dark | Down | 46.1 | 271.6 | Up | 08:05:55 - 08:25:02 | 1932 |
| Oliver | 08:15:28 | -60.3 | Dark | Down | 46.1 | 272.0 | Up | 08:05:55 - 08:25:02 | 1893 |
| Anarchist Mountain Observatory | 08:15:26 | -60.4 | Dark | Down | 45.9 | 272.3 | Up | 08:05:53 - 08:25:00 | 1876 |
| Tonasket | 08:15:27 | -60.8 | Dark | Down | 46.0 | 272.6 | Up | 08:05:53 - 08:25:00 | 1841 |
| Okanogan | 08:15:28 | -61.1 | Dark | Down | 46.1 | 272.8 | Up | 08:05:54 - 08:25:01 | 1803 |
| Victoria | 08:15:40 | -60.9 | Dark | Down | 48.6 | 269.9 | Up | 08:06:07 - 08:25:14 | 1795 |
| Brewster | 08:15:28 | -61.4 | Dark | Down | 46.2 | 273.0 | Up | 08:05:54 - 08:25:01 | 1772 |
| Manson/Chelan | 08:15:28 | -61.6 | Dark | Down | 46.4 | 272.9 | Up | 08:05:55 - 08:25:02 | 1745 |
| Wenatchee | 08:15:30 | -62.1 | Dark | Down | 46.5 | 273.3 | Up | 08:05:56 - 08:25:03 | 1692 |
| Ellensburg | 08:15:29 | -62.5 | Dark | Down | 46.6 | 273.6 | Up | 08:05:56 - 08:25:03 | 1644 |
| Yakima | 08:15:30 | -62.9 | Dark | Down | 46.6 | 274.0 | Up | 08:05:56 - 08:25:03 | 1599 |
| Toppenish/White Swan | 08:15:29 | -63.1 | Dark | Down | 46.5 | 274.3 | Up | 08:05:56 - 08:25:03 | 1577 |
| Pasco | 08:15:25 | -63.2 | Dark | Down | 45.6 | 275.3 | Up | 08:05:51 - 08:24:58 | 1574 |
| PNWRO | 08:15:24 | -63.4 | Dark | Down | 45.4 | 275.7 | Up | 08:05:50 - 08:24:57 | 1549 |
| Goldendale | 08:15:30 | -63.7 | Dark | Down | 46.7 | 274.6 | Up | 08:05:56 - 08:25:03 | 1512 |
| The Dalles | 08:15:31 | -63.9 | Dark | Down | 47.0 | 274.6 | Up | 08:05:57 - 08:25:04 | 1485 |
| Maupin | 08:15:31 | -64.3 | Dark | Down | 46.9 | 275.2 | Up | 08:05:57 - 08:25:04 | 1439 |
| Redmond | 08:15:30 | -65.2 | Dark | Down | 46.8 | 276.1 | Up | 08:05:57 - 08:25:04 | 1338 |
| Sisters | 08:15:31 | -65.2 | Dark | Down | 47.1 | 275.8 | Up | 08:05:57 - 08:25:04 | 1338 |
| Bend | 08:15:31 | -65.4 | Dark | Down | 46.9 | 276.2 | Up | 08:05:57 - 08:25:04 | 1313 |
| Oregon Observatory | 08:15:31 | -65.6 | Dark | Down | 47.0 | 276.3 | Up | 08:05:58 - 08:25:05 | 1293 |
| La Pine/Gilchrist | 08:15:31 | -65.8 | Dark | Down | 47.0 | 276.5 | Up | 08:05:58 - 08:25:05 | 1270 |
| North Lake | 08:15:29 | -66.2 | Dark | Down | 46.5 | 277.3 | Up | 08:05:56 - 08:25:03 | 1227 |
| Paisley | 08:15:28 | -66.8 | Dark | Down | 46.2 | 278.1 | Up | 08:05:54 - 08:25:01 | 1169 |
| Dunrhomin | 08:14:35 | -65.3 | Dark | Down | 34.6 | 288.0 | Up | 08:05:01 - 08:24:08 | 1150 |
| Lakeview | 08:15:26 | -67.3 | Dark | Down | 46.0 | 278.7 | Up | 08:05:53 - 08:25:00 | 1114 |
| Klamath Falls | 08:15:32 | -67.2 | Dark | Down | 47.0 | 277.9 | Up | 08:05:58 - 08:25:05 | 1107 |
| Cedarville | 08:15:25 | -67.9 | Dark | Down | 45.7 | 279.5 | Up | 08:05:52 - 08:24:59 | 1043 |
| Fall River/Burney | 08:15:30 | -68.4 | Dark | Down | 46.6 | 279.3 | Up | 08:05:57 - 08:25:04 | 980 |
| Susanville | 08:15:27 | -69.1 | Dark | Down | 45.9 | 280.4 | Up | 08:05:54 - 08:25:01 | 916 |
| Gimple | 08:15:28 | -69.3 | Dark | Down | 46.0 | 280.5 | Up | 08:05:55 - 08:25:02 | 884 |
| Greenville | 08:15:28 | -69.3 | Dark | Down | 46.1 | 280.5 | Up | 08:05:55 - 08:25:02 | 883 |
| Quincy | 08:15:28 | -69.5 | Dark | Down | 46.0 | 280.7 | Up | 08:05:55 - 08:25:02 | 861 |
| Portola | 08:15:26 | -69.7 | Dark | Down | 45.7 | 281.0 | Up | 08:05:52 - 08:24:59 | 851 |
| Reno | 08:15:24 | -69.9 | Dark | Down | 45.1 | 281.6 | Up | 08:05:50 - 08:24:57 | 828 |
| Carson City | 08:15:24 | -70.3 | Dark | Down | 45.0 | 282.0 | Up | 08:05:50 - 08:24:57 | 789 |
| Yerington | 08:15:21 | -70.4 | Dark | Down | 44.5 | 282.5 | Up | 08:05:48 - 08:24:55 | 774 |
| Gardnerville | 08:15:23 | -70.5 | Dark | Down | 45.0 | 282.2 | Up | 08:05:50 - 08:24:57 | 762 |
| Hawthorne | 08:15:19 | -70.8 | Dark | Down | 44.0 | 283.2 | Up | 08:05:46 - 08:24:53 | 728 |
| Tonopah | 08:15:14 | -71.1 | Dark | Down | 42.8 | 284.2 | Up | 08:05:40 - 08:24:47 | 693 |
| Lee Vining | 08:15:21 | -71.5 | Dark | Down | 44.3 | 283.5 | Up | 08:05:48 - 08:24:55 | 661 |
| Bishop | 08:15:18 | -72.0 | Dark | Down | 43.6 | 284.3 | Up | 08:05:45 - 08:24:52 | 604 |
| Beatty | 08:15:12 | -72.2 | Dark | Down | 42.2 | 285.4 | Up | 08:05:39 - 08:24:46 | 573 |
| Indian Springs | 08:15:08 | -72.3 | Dark | Down | 41.3 | 286.1 | Up | 08:05:34 - 08:24:41 | 552 |
| Henderson | 08:15:05 | -72.7 | Dark | Down | 40.6 | 286.8 | Up | 08:05:32 - 08:24:39 | 504 |
| Patrick | 08:15:01 | -72.9 | Dark | Down | 39.6 | 287.8 | Up | 08:05:28 - 08:24:35 | 454 |
| Kingman/Dolan Springs | 08:15:02 | -73.2 | Dark | Down | 39.7 | 287.9 | Up | 08:05:28 - 08:24:35 | 427 |
| Laughlin/Bullhead City | 08:15:04 | -73.4 | Dark | Down | 40.0 | 287.7 | Up | 08:05:30 - 08:24:37 | 417 |
| Mohave Valley | 08:15:04 | -73.6 | Dark | Down | 40.0 | 287.9 | Up | 08:05:30 - 08:24:37 | 387 |
| CPSLO | 08:15:28 | -74.2 | Dark | Down | 44.8 | 285.4 | Up | 08:05:54 - 08:25:01 | 356 |
| Lake Havasu City | 08:15:03 | -73.9 | Dark | Down | 39.6 | 288.3 | Up | 08:05:29 - 08:24:36 | 348 |
| Parker | 08:15:02 | -74.2 | Dark | Down | 39.5 | 288.6 | Up | 08:05:29 - 08:24:36 | 311 |
| George/Scottsdale | 08:14:54 | -73.7 | Dark | Down | 37.5 | 289.7 | Up | 08:05:20 - 08:24:27 | 307 |
| Blythe | 08:15:04 | -74.8 | Dark | Down | 39.6 | 288.9 | Up | 08:05:30 - 08:24:37 | 249 |
| Wildwood | 08:15:19 | -75.2 | Dark | Down | 42.8 | 287.2 | Up | 08:05:46 - 08:24:53 | 246 |
| Idyllwild | 08:15:12 | -75.3 | Dark | Down | 41.3 | 288.1 | Up | 08:05:39 - 08:24:46 | 230 |
| Calipatria | 08:15:08 | -75.5 | Dark | Down | 40.1 | 289.0 | Up | 08:05:34 - 08:24:41 | 182 |
| Yuma | 08:15:04 | -75.7 | Dark | Down | 39.3 | 289.6 | Up | 08:05:31 - 08:24:38 | 150 |
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 523620, (2023/01/23 08:20UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 17.62 105 3Iot Aur 04:56:59.6 +33:09:58 2.7 3.77 113 PPM 069605 04:43:48.2 +32:51:55 6.5 1.54 110 PPM 069600 04:43:05.0 +33:55:47 8.2 0.78 110 PPM 069531 04:36:25.0 +34:12:35 9.7 0.63 109 PPM 069569 04:39:31.1 +34:07:43 10.6 0.02 109 523620 04:39:26.2 +34:06:48 16.8 109 Positions are for J2000
Event circumstances last updated at 2021/01/14 22:42:14 UT
Marc W. Buie, Southwest Research Institute