Event between (547617) 10TT195 and star GA1120:00572571 with event index number of 2251329
Geocentric closest approach at 2021/10/23 08:15:46 UTC
J2000 position of star is 04:09:08.2 +22:34:35
Equinox of date position of star is 04:10:25.9 +22:37:57
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 5 degrees from the moon.
Moon is 93% illuminated.
TNO apparent brightness V=22.4
[RECON map]
TNO is 43.2 AU from the Sun
and 42.4 AU from the Earth.
The TNO is moving 20.6
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 169 seconds.
The 1-sigma cross-track error in the shadow position is
2185 km.
The sky-plane scale is
30766.7 km/arcsec.
The TNO has an absolute magnitude Hv=6.0
Diameter=380.2 km assuming a 5% albedo -- 18.5 sec chord
Diameter=155.2 km assuming a 30% albedo -- 7.5 sec chord
Dynamical classification is SCATEXTD
Star training set for 547617, (2021/10/23 08:16UT) Object RA Dec mag sep mel Aldebaran 04:37:10.5 +16:33:05 0.8 8.75 11 44Zet Per 03:55:30.5 +31:56:48 2.8 9.88 12 PPM 093337 04:14:09.1 +22:28:03 6.1 0.87 5 PPM 093308 04:12:26.6 +22:52:50 10.0 0.53 5 PPM 093277 04:09:55.9 +22:18:42 11.5 0.34 4 547617 04:10:26.0 +22:37:57 13.2 5 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 23.6 km
RECON observability=1.0 and success probability=13.1%
| 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 | 08:16:54 | -50.6 | Dark | Up | 56.0 | 135.0 | Up | 08:02:19 - 08:31:29 | -2465 |
| Kelowna | 08:16:54 | -51.0 | Dark | Up | 56.2 | 134.4 | Up | 08:02:19 - 08:31:29 | -2498 |
| Peachland | 08:16:54 | -51.1 | Dark | Up | 56.1 | 133.8 | Up | 08:02:19 - 08:31:29 | -2503 |
| Summerland | 08:16:54 | -51.3 | Dark | Up | 56.2 | 133.8 | Up | 08:02:19 - 08:31:29 | -2519 |
| Penticton | 08:16:54 | -51.3 | Dark | Up | 56.3 | 133.9 | Up | 08:02:19 - 08:31:29 | -2527 |
| Oliver | 08:16:54 | -51.7 | Dark | Up | 56.6 | 133.5 | Up | 08:02:19 - 08:31:29 | -2560 |
| Victoria | 08:16:54 | -52.8 | Dark | Up | 55.1 | 127.4 | Up | 08:02:19 - 08:31:29 | -2568 |
| Anarchist Mountain Observatory | 08:16:54 | -51.8 | Dark | Up | 56.8 | 133.6 | Up | 08:02:19 - 08:31:29 | -2579 |
| Tonasket | 08:16:54 | -52.1 | Dark | Up | 57.0 | 133.1 | Up | 08:02:19 - 08:31:29 | -2607 |
| Okanogan | 08:16:54 | -52.5 | Dark | Up | 57.1 | 132.5 | Up | 08:02:19 - 08:31:29 | -2636 |
| Brewster | 08:16:54 | -52.8 | Dark | Up | 57.2 | 131.9 | Up | 08:02:19 - 08:31:29 | -2659 |
| Manson/Chelan | 08:16:54 | -53.0 | Dark | Up | 57.2 | 131.2 | Up | 08:02:19 - 08:31:29 | -2673 |
| Wenatchee | 08:16:54 | -53.5 | Dark | Up | 57.4 | 130.4 | Up | 08:02:19 - 08:31:29 | -2716 |
| Ellensburg | 08:16:54 | -53.9 | Dark | Up | 57.5 | 129.5 | Up | 08:02:19 - 08:31:29 | -2753 |
| Yakima | 08:16:54 | -54.3 | Dark | Up | 57.8 | 129.0 | Up | 08:02:19 - 08:31:29 | -2793 |
| Toppenish/White Swan | 08:16:54 | -54.5 | Dark | Up | 58.0 | 129.0 | Up | 08:02:19 - 08:31:29 | -2816 |
| Pasco | 08:16:54 | -54.4 | Dark | Up | 58.8 | 130.7 | Up | 08:02:19 - 08:31:29 | -2847 |
| Goldendale | 08:16:54 | -55.1 | Dark | Up | 58.1 | 127.7 | Up | 08:02:19 - 08:31:29 | -2865 |
| PNWRO | 08:16:54 | -54.6 | Dark | Up | 59.0 | 130.7 | Up | 08:02:19 - 08:31:29 | -2874 |
| The Dalles | 08:16:54 | -55.4 | Dark | Up | 58.1 | 126.9 | Up | 08:02:19 - 08:31:29 | -2883 |
| Maupin | 08:16:54 | -55.8 | Dark | Up | 58.4 | 126.5 | Up | 08:02:19 - 08:31:29 | -2926 |
| Sisters | 08:17:15 | -56.7 | Dark | Up | 58.6 | 124.8 | Up | 08:02:40 - 08:31:50 | -2977 |
| Redmond | 08:17:14 | -56.7 | Dark | Up | 58.9 | 125.3 | Up | 08:02:39 - 08:31:49 | -2988 |
| Bend | 08:17:15 | -56.9 | Dark | Up | 58.9 | 124.8 | Up | 08:02:40 - 08:31:50 | -3005 |
| Oregon Observatory | 08:17:16 | -57.1 | Dark | Up | 59.0 | 124.4 | Up | 08:02:41 - 08:31:51 | -3019 |
| La Pine/Gilchrist | 08:17:16 | -57.3 | Dark | Up | 59.0 | 124.0 | Up | 08:02:41 - 08:31:51 | -3037 |
| North Lake | 08:17:15 | -57.6 | Dark | Up | 59.6 | 124.3 | Up | 08:02:40 - 08:31:50 | -3092 |
| Chiloquin | 08:17:20 | -58.5 | Dark | Up | 59.4 | 122.0 | Up | 08:02:45 - 08:31:55 | -3137 |
| Paisley | 08:17:15 | -58.1 | Dark | Up | 60.2 | 124.0 | Up | 08:02:40 - 08:31:50 | -3153 |
| Klamath Falls | 08:17:20 | -58.8 | Dark | Up | 59.7 | 121.6 | Up | 08:02:45 - 08:31:55 | -3172 |
| Lakeview | 08:17:16 | -58.6 | Dark | Up | 60.6 | 123.5 | Up | 08:02:41 - 08:31:51 | -3207 |
| Cedarville | 08:17:16 | -59.2 | Dark | Up | 61.0 | 122.8 | Up | 08:02:41 - 08:31:51 | -3275 |
| Fall River/Burney | 08:17:22 | -59.9 | Dark | Up | 60.5 | 120.4 | Up | 08:02:47 - 08:31:57 | -3296 |
| Susanville | 08:17:20 | -60.3 | Dark | Up | 61.3 | 120.4 | Up | 08:02:45 - 08:31:55 | -3375 |
| Greenville | 08:17:22 | -60.7 | Dark | Up | 61.3 | 119.6 | Up | 08:02:47 - 08:31:57 | -3396 |
| Gimple | 08:17:22 | -60.6 | Dark | Up | 61.3 | 119.7 | Up | 08:02:47 - 08:31:57 | -3398 |
| Quincy | 08:17:22 | -60.9 | Dark | Up | 61.4 | 119.3 | Up | 08:02:47 - 08:31:57 | -3416 |
| Portola | 08:17:20 | -60.9 | Dark | Up | 61.7 | 119.7 | Up | 08:02:45 - 08:31:55 | -3439 |
| Reno | 08:17:20 | -61.0 | Dark | Up | 62.3 | 120.1 | Up | 08:02:45 - 08:31:55 | -3480 |
| Carson City | 08:17:19 | -61.3 | Dark | Up | 62.5 | 119.6 | Up | 08:02:44 - 08:31:54 | -3516 |
| Gardnerville | 08:17:20 | -61.6 | Dark | Up | 62.7 | 119.2 | Up | 08:02:45 - 08:31:55 | -3542 |
| Yerington | 08:17:17 | -61.4 | Dark | Up | 63.0 | 120.1 | Up | 08:02:42 - 08:31:52 | -3550 |
| Hawthorne | 08:17:17 | -61.7 | Dark | Up | 63.6 | 120.0 | Up | 08:02:42 - 08:31:52 | -3608 |
| Lee Vining | 08:17:19 | -62.3 | Dark | Up | 63.6 | 118.4 | Up | 08:02:44 - 08:31:54 | -3654 |
| Dunrhomin | 08:16:22 | -54.9 | Dark | Up | 69.9 | 148.0 | Up | 08:01:47 - 08:30:57 | -3680 |
| Tonopah | 08:16:54 | -61.7 | Dark | Up | 64.7 | 121.1 | Up | 08:02:19 - 08:31:29 | -3705 |
| Bishop | 08:17:18 | -62.7 | Dark | Up | 64.3 | 118.3 | Up | 08:02:43 - 08:31:53 | -3731 |
| Beatty | 08:16:54 | -62.6 | Dark | Up | 65.6 | 119.6 | Up | 08:02:19 - 08:31:29 | -3833 |
| Indian Springs | 08:16:54 | -62.5 | Dark | Up | 66.6 | 120.6 | Up | 08:02:19 - 08:31:29 | -3883 |
| CPSLO | 08:17:30 | -65.2 | Dark | Up | 63.6 | 111.6 | Up | 08:02:55 - 08:32:05 | -3890 |
| Henderson | 08:16:54 | -62.7 | Dark | Up | 67.3 | 120.6 | Up | 08:02:19 - 08:31:29 | -3950 |
| Patrick | 08:16:54 | -62.8 | Dark | Up | 68.4 | 121.1 | Up | 08:02:19 - 08:31:29 | -4034 |
| Laughlin/Bullhead City | 08:16:54 | -63.3 | Dark | Up | 68.0 | 119.4 | Up | 08:02:19 - 08:31:29 | -4048 |
| Kingman/Dolan Springs | 08:16:54 | -63.1 | Dark | Up | 68.4 | 120.3 | Up | 08:02:19 - 08:31:29 | -4054 |
| Wildwood | 08:17:24 | -65.8 | Dark | Up | 65.6 | 111.7 | Up | 08:02:49 - 08:31:59 | -4062 |
| Mohave Valley | 08:16:54 | -63.6 | Dark | Up | 68.2 | 118.9 | Up | 08:02:19 - 08:31:29 | -4077 |
| Lake Havasu City | 08:16:54 | -63.8 | Dark | Up | 68.5 | 118.4 | Up | 08:02:19 - 08:31:29 | -4124 |
| Idyllwild | 08:17:18 | -65.4 | Dark | Up | 67.2 | 113.3 | Up | 08:02:43 - 08:31:53 | -4142 |
| Parker | 08:16:54 | -64.1 | Dark | Up | 68.7 | 117.6 | Up | 08:02:19 - 08:31:29 | -4161 |
| Blythe | 08:16:54 | -64.7 | Dark | Up | 68.7 | 115.9 | Up | 08:02:19 - 08:31:29 | -4213 |
| Calipatria | 08:17:14 | -65.5 | Dark | Up | 68.3 | 113.6 | Up | 08:02:39 - 08:31:49 | -4232 |
| George/Scottsdale | 08:16:54 | -63.3 | Dark | Up | 70.7 | 120.6 | Up | 08:02:19 - 08:31:29 | -4247 |
| Yuma | 08:16:54 | -65.5 | Dark | Up | 69.1 | 113.7 | Up | 08:02:19 - 08:31:29 | -4311 |
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 547617, (2021/10/23 08:16UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 8.75 11 44Zet Per 03:54:07.9 +31:53:01 2.8 9.88 12 PPM 093337 04:12:51.3 +22:24:47 6.1 0.87 5 PPM 093308 04:11:08.6 +22:49:31 10.0 0.53 5 PPM 093277 04:08:38.2 +22:15:19 11.5 0.34 4 547617 04:09:08.2 +22:34:35 13.2 5 Positions are for J2000
Event circumstances last updated at 2021/10/12 02:00:39 UT
Marc W. Buie, Southwest Research Institute