Event between (447178) 05RO43 and star GA0720:03744275 with event index number of 2291069
Geocentric closest approach at 2027/02/24 06:28:31 UTC
J2000 position of star is 08:17:23.8 -16:12:20
Equinox of date position of star is 08:18:30.7 -16:16:55
Stellar brightness G=15.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 69 degrees from the moon.
Moon is 86% illuminated.
Apparent brightness V=19.0
[RECON map]
Object is 14.8 AU from the Sun
and 14.1 AU from the Earth.
Apparent velocity is 20.7
km/sec on the sky relative to the star, or,
7.3 arcsec/hr.
The 1-sigma error in the time of the event is 71 seconds.
The 1-sigma cross-track error in the shadow position is
1274 km.
The sky-plane scale is
10202.2 km/arcsec.
The object has an absolute magnitude Hv=7.2
Diameter=208.9 km assuming a 5% albedo -- 10.8 sec chord
Diameter=85.3 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is CENTAURR
Star training set for 447178, (2027/02/24 06:31UT) Object RA Dec mag sep mel Sirius 06:46:20.8 -16:45:13 -1.5 22.11 91 15Rho Pup 08:08:42.1 -24:23:03 2.8 8.42 71 20 Pup 08:14:34.9 -15:52:18 5.0 1.06 70 21 Pup 08:18:37.8 -16:22:15 6.7 0.08 69 447178 08:18:38.6 -16:17:28 15.8 69 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 6.6 km
RECON observability=1.0 and success probability=0.2%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 06:30:42 | -46.4 | Dark | Up | 19.2 | 201.7 | Really Low | 06:24:16 - 06:37:07 | 5755 |
| Dunrhomin | 06:30:07 | -57.8 | Dark | Up | 30.0 | 204.5 | Low | 06:23:41 - 06:36:32 | 5535 |
| Nikitin | 06:30:08 | -57.9 | Dark | Up | 30.1 | 204.5 | Up | 06:23:43 - 06:36:34 | 5528 |
| CU-SBO | 06:30:07 | -58.0 | Dark | Up | 30.2 | 204.4 | Up | 06:23:42 - 06:36:33 | 5523 |
| Kelowna | 06:31:13 | -44.7 | Dark | Up | 23.6 | 188.3 | Low | 06:24:48 - 06:37:39 | 5164 |
| Penticton | 06:31:11 | -44.9 | Dark | Up | 23.9 | 188.2 | Low | 06:24:46 - 06:37:37 | 5151 |
| Peachland | 06:31:13 | -44.6 | Dark | Up | 23.7 | 188.0 | Low | 06:24:47 - 06:37:38 | 5148 |
| Summerland | 06:31:13 | -44.8 | Dark | Up | 23.8 | 188.1 | Low | 06:24:47 - 06:37:38 | 5148 |
| Kamloops | 06:31:17 | -43.7 | Dark | Up | 22.8 | 187.3 | Low | 06:24:51 - 06:37:42 | 5147 |
| Anarchist Mountain Observatory | 06:31:11 | -45.4 | Dark | Up | 24.4 | 188.4 | Low | 06:24:46 - 06:37:37 | 5146 |
| Oliver | 06:31:11 | -45.2 | Dark | Up | 24.2 | 188.2 | Low | 06:24:46 - 06:37:37 | 5141 |
| Okanogan | 06:31:11 | -45.8 | Dark | Up | 25.1 | 188.2 | Low | 06:24:45 - 06:37:36 | 5117 |
| Brewster | 06:31:10 | -45.9 | Dark | Up | 25.3 | 188.0 | Low | 06:24:45 - 06:37:36 | 5099 |
| PNWRO | 06:31:03 | -48.0 | Dark | Up | 27.3 | 189.1 | Low | 06:24:37 - 06:37:28 | 5076 |
| Manson/Chelan | 06:31:11 | -46.0 | Dark | Up | 25.6 | 187.7 | Low | 06:24:46 - 06:37:37 | 5076 |
| Wenatchee | 06:31:10 | -46.3 | Dark | Up | 26.1 | 187.5 | Low | 06:24:44 - 06:37:35 | 5053 |
| Ellensburg | 06:31:11 | -46.5 | Dark | Up | 26.5 | 187.3 | Low | 06:24:46 - 06:37:37 | 5030 |
| Toppenish/White Swan | 06:31:09 | -47.0 | Dark | Up | 27.1 | 187.5 | Low | 06:24:43 - 06:37:34 | 5017 |
| Yakima | 06:31:09 | -46.8 | Dark | Up | 26.9 | 187.3 | Low | 06:24:43 - 06:37:34 | 5016 |
| George/Scottsdale | 06:30:11 | -60.9 | Dark | Up | 38.0 | 198.7 | Up | 06:23:46 - 06:36:37 | 4962 |
| The Dalles | 06:31:09 | -47.3 | Dark | Up | 27.9 | 186.7 | Low | 06:24:44 - 06:37:35 | 4952 |
| Victoria | 06:31:20 | -44.1 | Dark | Up | 25.2 | 184.2 | Low | 06:24:55 - 06:37:46 | 4944 |
| Maupin | 06:31:08 | -47.6 | Dark | Up | 28.4 | 186.8 | Low | 06:24:43 - 06:37:34 | 4943 |
| Patrick | 06:30:22 | -58.6 | Dark | Up | 36.9 | 196.0 | Up | 06:23:57 - 06:36:48 | 4930 |
| Bend | 06:31:06 | -48.4 | Dark | Up | 29.5 | 186.7 | Low | 06:24:41 - 06:37:32 | 4892 |
| Sisters | 06:31:08 | -48.1 | Dark | Up | 29.3 | 186.4 | Low | 06:24:42 - 06:37:33 | 4887 |
| Laughlin/Bullhead City | 06:30:24 | -58.4 | Dark | Up | 37.3 | 195.3 | Up | 06:23:59 - 06:36:50 | 4881 |
| Oregon Observatory | 06:31:07 | -48.4 | Dark | Up | 29.7 | 186.5 | Low | 06:24:42 - 06:37:33 | 4879 |
| Lake Havasu City | 06:30:21 | -59.0 | Dark | Up | 37.9 | 195.7 | Up | 06:23:56 - 06:36:47 | 4865 |
| Cedarville | 06:30:58 | -50.8 | Dark | Up | 31.9 | 188.1 | Up | 06:24:32 - 06:37:23 | 4853 |
| Beatty | 06:30:36 | -55.9 | Dark | Up | 36.0 | 192.4 | Up | 06:24:11 - 06:37:02 | 4841 |
| Hawthorne | 06:30:46 | -53.8 | Dark | Up | 34.7 | 190.1 | Up | 06:24:20 - 06:37:11 | 4811 |
| Chiloquin | 06:31:06 | -49.2 | Dark | Up | 31.0 | 186.1 | Up | 06:24:41 - 06:37:32 | 4807 |
| Yerington | 06:30:49 | -53.1 | Dark | Up | 34.3 | 189.4 | Up | 06:24:23 - 06:37:14 | 4802 |
| Klamath Falls | 06:31:04 | -49.5 | Dark | Up | 31.3 | 186.2 | Up | 06:24:38 - 06:37:29 | 4798 |
| Reno | 06:30:52 | -52.4 | Dark | Up | 33.8 | 188.6 | Up | 06:24:27 - 06:37:18 | 4791 |
| Carson City | 06:30:52 | -52.7 | Dark | Up | 34.2 | 188.7 | Up | 06:24:26 - 06:37:17 | 4777 |
| Bishop | 06:30:42 | -54.7 | Dark | Up | 35.8 | 190.5 | Up | 06:24:16 - 06:37:07 | 4773 |
| Fall River/Burney | 06:31:00 | -50.5 | Dark | Up | 32.5 | 186.7 | Up | 06:24:35 - 06:37:26 | 4770 |
| Gardnerville | 06:30:51 | -52.9 | Dark | Up | 34.4 | 188.8 | Up | 06:24:25 - 06:37:16 | 4769 |
| Portola | 06:30:55 | -51.9 | Dark | Up | 33.6 | 187.9 | Up | 06:24:29 - 06:37:20 | 4768 |
| Yuma | 06:30:17 | -60.2 | Dark | Up | 39.7 | 195.7 | Up | 06:23:52 - 06:36:43 | 4765 |
| Lee Vining | 06:30:46 | -53.9 | Dark | Up | 35.3 | 189.6 | Up | 06:24:20 - 06:37:11 | 4761 |
| Gimple | 06:30:57 | -51.4 | Dark | Up | 33.3 | 187.4 | Up | 06:24:31 - 06:37:22 | 4760 |
| Greenville | 06:30:57 | -51.4 | Dark | Up | 33.3 | 187.3 | Up | 06:24:31 - 06:37:22 | 4756 |
| Quincy | 06:30:57 | -51.5 | Dark | Up | 33.5 | 187.3 | Up | 06:24:31 - 06:37:22 | 4747 |
| Calipatria | 06:30:22 | -59.3 | Dark | Up | 39.4 | 194.5 | Up | 06:23:57 - 06:36:48 | 4736 |
| Idyllwild | 06:30:28 | -58.2 | Dark | Up | 39.1 | 193.0 | Up | 06:24:03 - 06:36:54 | 4700 |
| Wildwood | 06:30:35 | -56.9 | Dark | Up | 39.0 | 190.7 | Up | 06:24:09 - 06:37:00 | 4611 |
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 447178, (2027/02/24 06:31UT) Object RA Dec mag sep mel Sirius 06:45:08.0 -16:43:26 -1.5 22.11 91 15Rho Pup 08:07:32.5 -24:18:14 2.8 8.42 71 20 Pup 08:13:19.9 -15:47:18 5.0 1.06 70 21 Pup 08:17:23.1 -16:17:07 6.7 0.08 69 447178 08:17:23.8 -16:12:20 15.8 69 Positions are for J2000
Event circumstances last updated at 2024/04/18 03:46:18 UT
Marc W. Buie, Southwest Research Institute