Event between (54598) Bienor and star GA1320:02748955 with event index number of 1105046
Geocentric closest approach at 2022/02/06 08:52:01 UTC
J2000 position of star is 05:12:37.6 +43:50:00
Equinox of date position of star is 05:14:13.3 +43:51:29
Stellar brightness G=12.7,
use SENSEUP=16 with the MallinCam and and exposure
time of 250 milli-seconds with the QHY174 camera.
Star is 62 degrees from the moon.
Moon is 29% illuminated.
TNO apparent brightness V=19.2
[RECON map]
TNO is 13.9 AU from the Sun
and 13.4 AU from the Earth.
The TNO is moving 12.8
km/sec on the sky relative to the star, or,
4.7 arcsec/hr.
The 1-sigma error in the time of the event is 40 seconds.
The 1-sigma cross-track error in the shadow position is
547 km.
The sky-plane scale is
9712.4 km/arcsec.
The TNO has an absolute magnitude Hv=7.5
Diameter=187.1 km assuming a 5% albedo -- 14.6 sec chord
Diameter=76.4 km assuming a 30% albedo -- 6.0 sec chord
Dynamical classification is CENTAURR
Star training set for 54598, (2022/02/06 08:52UT) Object RA Dec mag sep mel Aldebaran 04:37:11.5 +16:33:07 0.8 28.41 47 34Bet Aur 06:01:09.0 +44:56:50 1.9 8.44 70 PPM 047726 05:08:24.5 +43:12:09 6.5 1.24 60 PPM 047849 05:14:41.2 +44:03:22 8.1 0.22 62 PPM 047836 05:14:04.6 +43:45:33 8.8 0.10 62 54598 05:14:13.3 +43:51:29 12.7 62 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 26.3 km
RECON observability=1.0 and success probability=25.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 08:45:33 | -49.5 | Dark | Down | 36.5 | 296.9 | Up | 08:41:41 - 08:49:25 | -504 |
| Kamloops | 08:46:25 | -54.4 | Dark | Down | 44.1 | 289.8 | Up | 08:42:33 - 08:50:17 | -867 |
| Kelowna | 08:46:22 | -55.0 | Dark | Down | 43.2 | 291.1 | Up | 08:42:30 - 08:50:14 | -947 |
| Peachland | 08:46:23 | -55.2 | Dark | Down | 43.4 | 291.0 | Up | 08:42:31 - 08:50:15 | -961 |
| Summerland | 08:46:23 | -55.3 | Dark | Down | 43.3 | 291.2 | Up | 08:42:31 - 08:50:15 | -977 |
| Penticton | 08:46:23 | -55.3 | Dark | Down | 43.2 | 291.3 | Up | 08:42:31 - 08:50:15 | -983 |
| Oliver | 08:46:23 | -55.7 | Dark | Down | 43.1 | 291.6 | Up | 08:42:31 - 08:50:15 | -1020 |
| Anarchist Mountain Observatory | 08:46:22 | -55.8 | Dark | Down | 42.9 | 291.9 | Up | 08:42:30 - 08:50:14 | -1037 |
| Tonasket | 08:46:23 | -56.1 | Dark | Down | 42.8 | 292.1 | Up | 08:42:31 - 08:50:15 | -1070 |
| Okanogan | 08:46:24 | -56.5 | Dark | Down | 42.8 | 292.3 | Up | 08:42:32 - 08:50:16 | -1107 |
| Victoria | 08:46:39 | -56.8 | Dark | Down | 45.1 | 290.2 | Up | 08:42:47 - 08:50:31 | -1116 |
| Brewster | 08:46:25 | -56.8 | Dark | Down | 42.8 | 292.4 | Up | 08:42:33 - 08:50:17 | -1138 |
| Manson/Chelan | 08:46:26 | -57.0 | Dark | Down | 42.9 | 292.4 | Up | 08:42:34 - 08:50:18 | -1163 |
| Wenatchee | 08:46:27 | -57.5 | Dark | Down | 42.8 | 292.8 | Up | 08:42:35 - 08:50:19 | -1215 |
| Ellensburg | 08:46:29 | -58.0 | Dark | Down | 42.8 | 293.0 | Up | 08:42:37 - 08:50:21 | -1260 |
| Yakima | 08:46:30 | -58.4 | Dark | Down | 42.7 | 293.3 | Up | 08:42:38 - 08:50:22 | -1303 |
| Toppenish/White Swan | 08:46:29 | -58.5 | Dark | Down | 42.5 | 293.6 | Up | 08:42:37 - 08:50:21 | -1325 |
| PNWRO | 08:46:23 | -58.6 | Dark | Down | 41.4 | 294.6 | Up | 08:42:31 - 08:50:15 | -1350 |
| Goldendale | 08:46:31 | -59.1 | Dark | Down | 42.5 | 293.9 | Up | 08:42:39 - 08:50:23 | -1386 |
| The Dalles | 08:46:34 | -59.4 | Dark | Down | 42.7 | 293.9 | Up | 08:42:42 - 08:50:26 | -1413 |
| Maupin | 08:46:33 | -59.8 | Dark | Down | 42.4 | 294.3 | Up | 08:42:41 - 08:50:25 | -1456 |
| Sisters | 08:46:37 | -60.7 | Dark | Down | 42.4 | 294.8 | Up | 08:42:45 - 08:50:29 | -1551 |
| Bend | 08:46:37 | -60.9 | Dark | Down | 42.1 | 295.1 | Up | 08:42:45 - 08:50:29 | -1574 |
| Oregon Observatory | 08:46:37 | -61.1 | Dark | Down | 42.1 | 295.2 | Up | 08:42:45 - 08:50:29 | -1593 |
| North Lake | 08:46:35 | -61.7 | Dark | Down | 41.5 | 295.9 | Up | 08:42:43 - 08:50:27 | -1656 |
| Dunrhomin | 08:45:32 | -58.4 | Dark | Down | 30.0 | 304.0 | Low | 08:41:40 - 08:49:24 | -1675 |
| Chiloquin | 08:46:42 | -62.5 | Dark | Down | 41.8 | 296.1 | Up | 08:42:50 - 08:50:34 | -1733 |
| Lakeview | 08:46:34 | -62.6 | Dark | Down | 40.6 | 297.0 | Up | 08:42:42 - 08:50:26 | -1760 |
| Klamath Falls | 08:46:41 | -62.8 | Dark | Down | 41.6 | 296.4 | Up | 08:42:49 - 08:50:33 | -1767 |
| Cedarville | 08:46:34 | -63.2 | Dark | Down | 40.2 | 297.6 | Up | 08:42:42 - 08:50:26 | -1826 |
| Fall River/Burney | 08:46:41 | -63.9 | Dark | Down | 40.8 | 297.5 | Up | 08:42:49 - 08:50:33 | -1885 |
| Susanville | 08:46:38 | -64.3 | Dark | Down | 40.0 | 298.2 | Up | 08:42:46 - 08:50:30 | -1943 |
| Gimple | 08:46:40 | -64.6 | Dark | Down | 40.0 | 298.4 | Up | 08:42:48 - 08:50:32 | -1973 |
| Greenville | 08:46:40 | -64.6 | Dark | Down | 40.1 | 298.3 | Up | 08:42:48 - 08:50:32 | -1973 |
| Quincy | 08:46:41 | -64.8 | Dark | Down | 40.0 | 298.5 | Up | 08:42:49 - 08:50:33 | -1993 |
| Portola | 08:46:38 | -64.9 | Dark | Down | 39.6 | 298.7 | Up | 08:42:46 - 08:50:30 | -2002 |
| Reno | 08:46:36 | -65.0 | Dark | Down | 39.0 | 299.1 | Up | 08:42:44 - 08:50:28 | -2023 |
| Carson City | 08:46:37 | -65.3 | Dark | Down | 38.8 | 299.4 | Up | 08:42:45 - 08:50:29 | -2059 |
| Yerington | 08:46:34 | -65.3 | Dark | Down | 38.3 | 299.7 | Up | 08:42:42 - 08:50:26 | -2071 |
| Gardnerville | 08:46:37 | -65.5 | Dark | Down | 38.7 | 299.6 | Up | 08:42:45 - 08:50:29 | -2083 |
| Hawthorne | 08:46:33 | -65.6 | Dark | Down | 37.7 | 300.2 | Up | 08:42:41 - 08:50:25 | -2112 |
| Tonopah | 08:46:27 | -65.6 | Dark | Down | 36.6 | 301.0 | Up | 08:42:35 - 08:50:19 | -2141 |
| Lee Vining | 08:46:36 | -66.2 | Dark | Down | 37.8 | 300.4 | Up | 08:42:44 - 08:50:28 | -2174 |
| Bishop | 08:46:34 | -66.6 | Dark | Down | 37.0 | 301.0 | Up | 08:42:42 - 08:50:26 | -2224 |
| Beatty | 08:46:26 | -66.4 | Dark | Down | 35.7 | 301.8 | Up | 08:42:34 - 08:50:18 | -2248 |
| Indian Springs | 08:46:23 | -66.3 | Dark | Down | 34.8 | 302.3 | Up | 08:42:31 - 08:50:15 | -2263 |
| Henderson | 08:46:19 | -66.4 | Dark | Down | 34.0 | 302.8 | Up | 08:42:27 - 08:50:11 | -2303 |
| Patrick | 08:46:16 | -66.4 | Dark | Down | 32.9 | 303.5 | Up | 08:42:24 - 08:50:08 | -2344 |
| Kingman/Dolan Springs | 08:46:17 | -66.7 | Dark | Down | 32.9 | 303.6 | Up | 08:42:25 - 08:50:09 | -2369 |
| Laughlin/Bullhead City | 08:46:19 | -67.0 | Dark | Down | 33.3 | 303.4 | Up | 08:42:27 - 08:50:11 | -2380 |
| Mohave Valley | 08:46:20 | -67.2 | Dark | Down | 33.1 | 303.6 | Up | 08:42:28 - 08:50:12 | -2406 |
| Lake Havasu City | 08:46:21 | -67.4 | Dark | Down | 32.7 | 303.9 | Up | 08:42:29 - 08:50:13 | -2439 |
| George/Scottsdale | 08:46:09 | -66.7 | Dark | Down | 30.6 | 304.9 | Up | 08:42:17 - 08:50:01 | -2464 |
| Parker | 08:46:20 | -67.7 | Dark | Down | 32.5 | 304.1 | Up | 08:42:28 - 08:50:12 | -2472 |
| Wildwood | 08:46:41 | -69.6 | Dark | Down | 35.4 | 303.0 | Up | 08:42:49 - 08:50:33 | -2542 |
| Idyllwild | 08:46:33 | -69.1 | Dark | Down | 33.9 | 303.7 | Up | 08:42:41 - 08:50:25 | -2551 |
| Calipatria | 08:46:28 | -69.1 | Dark | Down | 32.7 | 304.3 | Up | 08:42:36 - 08:50:20 | -2589 |
| Yuma | 08:46:25 | -69.0 | Dark | Down | 31.9 | 304.7 | Up | 08:42:33 - 08:50:17 | -2614 |
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 54598, (2022/02/06 08:52UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 28.41 47 34Bet Aur 05:59:31.6 +44:56:51 1.9 8.44 70 PPM 047726 05:06:49.5 +43:10:29 6.5 1.24 60 PPM 047849 05:13:05.2 +44:01:54 8.1 0.22 62 PPM 047836 05:12:28.9 +43:44:04 8.8 0.10 62 54598 05:12:37.6 +43:50:00 12.7 62 Positions are for J2000
Event circumstances last updated at 2022/02/06 00:55:12 UT
Marc W. Buie, Southwest Research Institute