Event between (55638) 02VE95 and star GA0940:02218612 with event index number of 2250021
Geocentric closest approach at 2025/02/06 06:05:25 UTC
J2000 position of star is 06:58:14.4 +05:56:35
Equinox of date position of star is 06:59:32.0 +05:54:32
Stellar brightness G=15.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 50 degrees from the moon.
Moon is 60% illuminated.
Apparent brightness V=20.6
[RECON map]
Object is 31.4 AU from the Sun
and 30.6 AU from the Earth.
Apparent velocity is 20.5
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 122 seconds.
The 1-sigma cross-track error in the shadow position is
1413 km.
The sky-plane scale is
22221.4 km/arcsec.
The object has an absolute magnitude Hv=5.6
Diameter=524.8 km assuming a 5% albedo -- 22.4 sec chord
Diameter=214.3 km assuming a 30% albedo -- 9.2 sec chord
Dynamical classification is 3:2E
Star training set for 55638, (2025/02/06 06:06UT) Object RA Dec mag sep mel Betelgeuse 05:56:31.9 +07:24:35 0.4 15.73 35 Alhena 06:39:09.7 +16:22:33 1.9 11.60 41 PPM 151776 07:03:15.5 +05:31:10 6.4 0.99 51 PPM 151571 06:57:46.2 +05:58:11 7.6 0.45 49 PPM 151640 06:59:41.3 +05:52:23 9.2 0.04 50 55638 06:59:35.0 +05:54:27 15.9 50 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 20.0 km
RECON observability=1.0 and success probability=7.6%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 06:05:42 | -50.7 | Dark | Up | 41.6 | 203.7 | Up | 05:55:05 - 06:16:20 | 3514 |
| Kamloops | 06:06:25 | -46.3 | Dark | Up | 45.2 | 184.7 | Up | 05:55:48 - 06:17:03 | 3087 |
| Kelowna | 06:06:20 | -47.3 | Dark | Up | 45.9 | 186.0 | Up | 05:55:43 - 06:16:58 | 3048 |
| Peachland | 06:06:21 | -47.2 | Dark | Up | 46.1 | 185.6 | Up | 05:55:43 - 06:16:58 | 3033 |
| Summerland | 06:06:20 | -47.4 | Dark | Up | 46.2 | 185.7 | Up | 05:55:43 - 06:16:58 | 3024 |
| Penticton | 06:06:20 | -47.5 | Dark | Up | 46.3 | 185.9 | Up | 05:55:43 - 06:16:58 | 3021 |
| Oliver | 06:06:19 | -47.7 | Dark | Up | 46.6 | 185.9 | Up | 05:55:42 - 06:16:57 | 2995 |
| Anarchist Mountain Observatory | 06:06:19 | -47.9 | Dark | Up | 46.8 | 186.2 | Up | 05:55:41 - 06:16:56 | 2987 |
| Okanogan | 06:06:18 | -48.2 | Dark | Up | 47.4 | 186.0 | Up | 05:55:41 - 06:16:56 | 2932 |
| Brewster | 06:06:19 | -48.3 | Dark | Up | 47.7 | 185.7 | Up | 05:55:41 - 06:16:56 | 2907 |
| Manson/Chelan | 06:06:19 | -48.2 | Dark | Up | 48.0 | 185.2 | Up | 05:55:42 - 06:16:57 | 2882 |
| Victoria | 06:06:31 | -46.2 | Dark | Up | 47.4 | 180.4 | Up | 05:55:54 - 06:17:09 | 2854 |
| Wenatchee | 06:06:19 | -48.5 | Dark | Up | 48.4 | 185.0 | Up | 05:55:42 - 06:16:57 | 2841 |
| Ellensburg | 06:06:20 | -48.6 | Dark | Up | 48.9 | 184.7 | Up | 05:55:42 - 06:16:57 | 2804 |
| Yakima | 06:06:19 | -48.8 | Dark | Up | 49.3 | 184.7 | Up | 05:55:42 - 06:16:57 | 2771 |
| PNWRO | 06:06:13 | -50.1 | Dark | Up | 49.7 | 187.3 | Up | 05:55:35 - 06:16:50 | 2767 |
| Toppenish/White Swan | 06:06:18 | -49.1 | Dark | Up | 49.5 | 185.0 | Up | 05:55:41 - 06:16:56 | 2758 |
| Dunrhomin | 06:05:11 | -61.0 | Dark | Up | 52.0 | 210.3 | Up | 05:54:34 - 06:15:49 | 2678 |
| The Dalles | 06:06:20 | -49.1 | Dark | Up | 50.3 | 183.8 | Up | 05:55:42 - 06:16:57 | 2677 |
| Nikitin | 06:05:11 | -61.2 | Dark | Up | 52.2 | 210.4 | Up | 05:54:33 - 06:15:48 | 2662 |
| CU-SBO | 06:05:11 | -61.2 | Dark | Up | 52.3 | 210.3 | Up | 05:54:33 - 06:15:48 | 2655 |
| Maupin | 06:06:19 | -49.4 | Dark | Up | 50.7 | 184.0 | Up | 05:55:42 - 06:16:57 | 2646 |
| Sisters | 06:06:20 | -49.6 | Dark | Up | 51.6 | 183.3 | Up | 05:55:42 - 06:16:57 | 2562 |
| Bend | 06:06:18 | -49.9 | Dark | Up | 51.8 | 183.8 | Up | 05:55:41 - 06:16:56 | 2549 |
| Oregon Observatory | 06:06:18 | -49.9 | Dark | Up | 52.0 | 183.6 | Up | 05:55:41 - 06:16:56 | 2532 |
| Chiloquin | 06:06:18 | -50.4 | Dark | Up | 53.3 | 183.0 | Up | 05:55:41 - 06:16:56 | 2411 |
| Klamath Falls | 06:06:17 | -50.7 | Dark | Up | 53.7 | 183.1 | Up | 05:55:39 - 06:16:54 | 2385 |
| Cedarville | 06:06:10 | -52.0 | Dark | Up | 54.3 | 185.9 | Up | 05:55:32 - 06:16:47 | 2369 |
| Fall River/Burney | 06:06:13 | -51.5 | Dark | Up | 54.8 | 183.9 | Up | 05:55:36 - 06:16:51 | 2295 |
| Gimple | 06:06:11 | -52.3 | Dark | Up | 55.7 | 184.9 | Up | 05:55:33 - 06:16:48 | 2231 |
| Greenville | 06:06:11 | -52.3 | Dark | Up | 55.7 | 184.7 | Up | 05:55:33 - 06:16:48 | 2229 |
| Portola | 06:06:08 | -52.8 | Dark | Up | 56.0 | 185.6 | Up | 05:55:31 - 06:16:46 | 2214 |
| Quincy | 06:06:11 | -52.4 | Dark | Up | 55.9 | 184.7 | Up | 05:55:34 - 06:16:49 | 2212 |
| Reno | 06:06:05 | -53.3 | Dark | Up | 56.2 | 186.8 | Up | 05:55:28 - 06:16:43 | 2209 |
| Yerington | 06:06:02 | -54.0 | Dark | Up | 56.7 | 188.0 | Up | 05:55:25 - 06:16:40 | 2179 |
| Carson City | 06:06:05 | -53.5 | Dark | Up | 56.6 | 186.9 | Up | 05:55:27 - 06:16:42 | 2178 |
| Gardnerville | 06:06:04 | -53.7 | Dark | Up | 56.8 | 187.0 | Up | 05:55:27 - 06:16:42 | 2158 |
| Hawthorne | 06:05:59 | -54.6 | Dark | Up | 57.1 | 189.1 | Up | 05:55:22 - 06:16:37 | 2154 |
| Lee Vining | 06:06:00 | -54.6 | Dark | Up | 57.7 | 188.3 | Up | 05:55:23 - 06:16:38 | 2091 |
| Beatty | 06:05:49 | -56.7 | Dark | Up | 58.4 | 192.9 | Up | 05:55:11 - 06:16:26 | 2065 |
| Bishop | 06:05:56 | -55.4 | Dark | Up | 58.2 | 189.8 | Up | 05:55:19 - 06:16:34 | 2058 |
| Patrick | 06:05:34 | -59.4 | Dark | Up | 59.2 | 198.9 | Up | 05:54:57 - 06:16:12 | 2018 |
| Laughlin/Bullhead City | 06:05:37 | -59.1 | Dark | Up | 59.6 | 197.7 | Up | 05:54:59 - 06:16:14 | 1975 |
| George/Scottsdale | 06:05:23 | -61.7 | Dark | Up | 60.2 | 203.7 | Up | 05:54:46 - 06:16:01 | 1928 |
| Lake Havasu City | 06:05:35 | -59.6 | Dark | Up | 60.2 | 198.6 | Up | 05:54:57 - 06:16:12 | 1923 |
| Idyllwild | 06:05:43 | -58.3 | Dark | Up | 61.5 | 194.3 | Up | 05:55:05 - 06:16:20 | 1783 |
| Calipatria | 06:05:37 | -59.4 | Dark | Up | 61.8 | 196.9 | Up | 05:54:59 - 06:16:14 | 1763 |
| Wildwood | 06:05:52 | -56.8 | Dark | Up | 61.5 | 190.3 | Up | 05:55:14 - 06:16:29 | 1759 |
| Yuma | 06:05:32 | -60.3 | Dark | Up | 62.0 | 199.0 | Up | 05:54:55 - 06:16:10 | 1751 |
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 55638, (2025/02/06 06:06UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 15.73 35 Alhena 06:37:42.8 +16:23:57 1.9 11.60 41 PPM 151776 07:01:55.2 +05:33:25 6.4 0.99 51 PPM 151571 06:56:25.7 +06:00:15 7.6 0.45 49 PPM 151640 06:58:20.8 +05:54:31 9.2 0.04 50 55638 06:58:14.4 +05:56:35 15.9 50 Positions are for J2000
Event circumstances last updated at 2024/03/05 04:24:13 UT
Marc W. Buie, Southwest Research Institute