Event between (54598) Bienor and star GA1340:02547373 with event index number of 363547
Geocentric closest approach at 2020/10/24 12:21:31 UTC
J2000 position of star is 04:55:40.4 +44:24:33
Equinox of date position of star is 04:57:10.6 +44:26:27
Stellar brightness G=11.9,
use SENSEUP=16
Star is 124 degrees from the moon.
Moon is 60% illuminated.
TNO apparent brightness V=21.7
[RECON map]
TNO is 14.2 AU from the Sun
and 13.6 AU from the Earth.
The TNO is moving 14.6
km/sec on the sky relative to the star, or,
5.3 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
518 km.
The sky-plane scale is
9855.8 km/arcsec.
The TNO has an absolute magnitude Hv=10.0
Diameter=186.2 km assuming a 5% albedo -- 4.1 sec chord
Diameter=76.0 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
Star training set for 54598, (2020/10/24 12:22UT) Object RA Dec mag sep mel Aldebaran 04:37:07.1 +16:32:58 0.8 28.21 116 3Iot Aur 04:58:21.1 +33:11:50 2.7 11.25 124 PPM 047482 04:56:21.1 +44:05:34 6.0 0.38 124 PPM 047525 04:58:27.2 +44:41:06 9.4 0.33 124 PPM 047516 04:57:51.8 +44:30:05 10.5 0.14 124 54598 04:57:10.6 +44:26:27 11.9 124 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 10.8 km
RECON observability=1.0 and success probability=60.5%
| 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 | 12:20:17 | -22.1 | Dark | Down | 72.0 | 260.8 | Up | 12:16:26 - 12:24:09 | 348 |
| Kelowna | 12:20:17 | -22.3 | Dark | Down | 72.2 | 261.8 | Up | 12:16:26 - 12:24:09 | 324 |
| Anarchist Mountain Observatory | 12:20:17 | -22.3 | Dark | Down | 72.2 | 264.5 | Up | 12:16:26 - 12:24:09 | 318 |
| Tonasket | 12:20:17 | -22.4 | Dark | Down | 72.3 | 265.4 | Up | 12:16:26 - 12:24:09 | 315 |
| Okanogan | 12:20:17 | -22.6 | Dark | Down | 72.4 | 266.3 | Up | 12:16:26 - 12:24:09 | 311 |
| Penticton | 12:20:17 | -22.4 | Dark | Down | 72.3 | 262.7 | Up | 12:16:26 - 12:24:09 | 309 |
| Oliver | 12:20:17 | -22.4 | Dark | Down | 72.3 | 263.8 | Up | 12:16:26 - 12:24:09 | 304 |
| Summerland | 12:20:17 | -22.4 | Dark | Down | 72.4 | 262.4 | Up | 12:16:26 - 12:24:09 | 303 |
| Peachland | 12:20:17 | -22.5 | Dark | Down | 72.4 | 261.8 | Up | 12:16:26 - 12:24:09 | 301 |
| Niwot | 12:18:26 | -12.7 | AT | Down | 61.2 | 291.5 | Up | 12:14:35 - 12:22:18 | 256 |
| SwRI | 12:18:26 | -12.8 | AT | Down | 61.2 | 291.7 | Up | 12:14:35 - 12:22:18 | 242 |
| Brewster | 12:19:58 | -22.8 | Dark | Down | 72.6 | 267.0 | Up | 12:16:07 - 12:23:50 | 112 |
| Manson/Chelan | 12:19:59 | -23.0 | Dark | Down | 72.9 | 267.3 | Up | 12:16:07 - 12:23:50 | 77 |
| Entiat | 12:19:58 | -23.1 | Dark | Down | 73.0 | 268.0 | Up | 12:16:06 - 12:23:49 | 55 |
| Wenatchee | 12:19:57 | -23.2 | Dark | Down | 73.0 | 268.7 | Up | 12:16:05 - 12:23:48 | 29 |
| Pasco | 12:19:47 | -22.6 | Dark | Down | 72.2 | 273.2 | Up | 12:15:55 - 12:23:38 | -12 |
| Ellensburg | 12:19:56 | -23.4 | Dark | Down | 73.2 | 269.9 | Up | 12:16:04 - 12:23:47 | -17 |
| PNWRO | 12:19:45 | -22.5 | Dark | Down | 72.0 | 274.1 | Up | 12:15:53 - 12:23:36 | -22 |
| Yakima | 12:19:54 | -23.5 | Dark | Down | 73.2 | 271.2 | Up | 12:16:02 - 12:23:45 | -52 |
| Victoria | 12:20:17 | -25.0 | Dark | Down | 74.9 | 262.1 | Up | 12:16:26 - 12:24:09 | -55 |
| Toppenish/White Swan | 12:19:52 | -23.4 | Dark | Down | 73.1 | 272.1 | Up | 12:16:01 - 12:23:44 | -63 |
| Goldendale | 12:19:51 | -23.8 | Dark | Down | 73.4 | 273.6 | Up | 12:16:00 - 12:23:43 | -130 |
| The Dalles | 12:19:52 | -24.1 | Dark | Down | 73.6 | 274.2 | Up | 12:16:00 - 12:23:43 | -167 |
| Maupin | 12:19:49 | -24.1 | Dark | Down | 73.5 | 275.7 | Up | 12:15:58 - 12:23:41 | -198 |
| Redmond | 12:19:45 | -24.2 | Dark | Down | 73.5 | 278.6 | Up | 12:15:54 - 12:23:37 | -281 |
| Sisters | 12:19:47 | -24.5 | Dark | Down | 73.7 | 278.4 | Up | 12:15:56 - 12:23:39 | -298 |
| Bend | 12:19:45 | -24.4 | Dark | Down | 73.5 | 279.3 | Up | 12:15:53 - 12:23:36 | -306 |
| Oregon Observatory | 12:19:44 | -24.5 | Dark | Down | 73.6 | 279.8 | Up | 12:15:53 - 12:23:36 | -328 |
| La Pine/Gilchrist | 12:19:44 | -24.6 | Dark | Down | 73.6 | 280.5 | Up | 12:15:52 - 12:23:35 | -349 |
| North Lake | 12:19:40 | -24.2 | Dark | Down | 73.1 | 282.1 | Up | 12:15:48 - 12:23:31 | -357 |
| Paisley | 12:19:36 | -24.0 | Dark | Down | 72.7 | 283.9 | Up | 12:15:44 - 12:23:27 | -387 |
| Lakeview | 12:19:32 | -23.9 | Dark | Down | 72.5 | 285.4 | Up | 12:15:41 - 12:23:24 | -421 |
| Cedarville | 12:19:29 | -23.8 | Dark | Down | 72.2 | 287.4 | Up | 12:15:37 - 12:23:20 | -469 |
| Klamath Falls | 12:19:39 | -24.9 | Dark | Down | 73.5 | 285.3 | Up | 12:15:47 - 12:23:30 | -490 |
| Fall River/Burney | 12:19:31 | -24.8 | Dark | Down | 72.9 | 289.0 | Up | 12:15:40 - 12:23:23 | -574 |
| Susanville | 12:19:26 | -24.3 | Dark | Down | 72.2 | 290.7 | Up | 12:15:34 - 12:23:17 | -591 |
| Tonopah | 12:19:00 | -21.9 | Dark | Down | 68.8 | 296.1 | Up | 12:15:09 - 12:22:52 | -609 |
| DCO | 12:18:30 | -18.7 | Dark | Down | 64.7 | 300.9 | Up | 12:14:39 - 12:22:22 | -622 |
| Reno | 12:19:18 | -23.8 | Dark | Down | 71.3 | 293.0 | Up | 12:15:26 - 12:23:09 | -623 |
| Gimple | 12:19:25 | -24.5 | Dark | Down | 72.2 | 291.6 | Up | 12:15:34 - 12:23:17 | -626 |
| Greenville | 12:19:25 | -24.6 | Dark | Down | 72.3 | 291.6 | Up | 12:15:34 - 12:23:17 | -630 |
| Portola | 12:19:22 | -24.2 | Dark | Down | 71.8 | 292.4 | Up | 12:15:31 - 12:23:14 | -634 |
| Yerington | 12:19:12 | -23.3 | Dark | Down | 70.6 | 294.3 | Up | 12:15:21 - 12:23:04 | -636 |
| Patrick | 12:18:34 | -19.3 | Dark | Down | 65.3 | 300.6 | Up | 12:14:43 - 12:22:26 | -639 |
| Hawthorne | 12:19:08 | -22.9 | Dark | Down | 70.0 | 295.3 | Up | 12:15:17 - 12:23:00 | -647 |
| Indian Springs | 12:18:47 | -20.7 | Dark | Down | 67.1 | 298.9 | Up | 12:14:55 - 12:22:38 | -648 |
| Quincy | 12:19:25 | -24.6 | Dark | Down | 72.2 | 292.2 | Up | 12:15:33 - 12:23:16 | -648 |
| Henderson | 12:18:42 | -20.2 | Dark | Down | 66.4 | 299.7 | Up | 12:14:50 - 12:22:33 | -652 |
| Carson City | 12:19:16 | -23.8 | Dark | Down | 71.1 | 294.0 | Up | 12:15:25 - 12:23:08 | -653 |
| George/Scottsdale | 12:18:18 | -17.6 | AT | Down | 63.0 | 302.9 | Up | 12:14:27 - 12:22:10 | -657 |
| Kingman/Dolan Springs | 12:18:34 | -19.4 | Dark | Down | 65.3 | 301.1 | Up | 12:14:43 - 12:22:26 | -669 |
| Gardnerville | 12:19:15 | -23.8 | Dark | Down | 71.0 | 294.6 | Up | 12:15:23 - 12:23:06 | -671 |
| Beatty | 12:18:53 | -21.6 | Dark | Down | 68.0 | 298.5 | Up | 12:15:02 - 12:22:45 | -682 |
| Searchlight/Boulder City | 12:18:39 | -20.1 | Dark | Down | 66.1 | 300.9 | Up | 12:14:47 - 12:22:30 | -697 |
| Laughlin/Bullhead City | 12:18:36 | -19.9 | Dark | Down | 65.7 | 301.3 | Up | 12:14:45 - 12:22:28 | -701 |
| Lee Vining | 12:19:08 | -23.4 | Dark | Down | 70.1 | 296.9 | Up | 12:15:16 - 12:22:59 | -723 |
| Mohave Valley | 12:18:35 | -19.8 | Dark | Down | 65.5 | 301.8 | Up | 12:14:44 - 12:22:27 | -724 |
| Bishop | 12:19:02 | -22.8 | Dark | Down | 69.4 | 298.1 | Up | 12:15:11 - 12:22:54 | -734 |
| Lake Havasu City | 12:18:32 | -19.6 | Dark | Down | 65.1 | 302.5 | Up | 12:14:40 - 12:22:23 | -743 |
| Parker | 12:18:30 | -19.6 | Dark | Down | 64.9 | 303.1 | Up | 12:14:39 - 12:22:22 | -770 |
| Blythe | 12:18:29 | -19.9 | Dark | Down | 64.9 | 304.1 | Up | 12:14:38 - 12:22:21 | -832 |
| Yuma | 12:18:25 | -19.9 | Dark | Down | 64.4 | 305.8 | Up | 12:14:34 - 12:22:17 | -912 |
| Calipatria | 12:18:31 | -20.6 | Dark | Down | 65.2 | 305.5 | Up | 12:14:39 - 12:22:22 | -930 |
| Idyllwild | 12:18:39 | -21.6 | Dark | Down | 66.4 | 304.9 | Up | 12:14:47 - 12:22:30 | -949 |
| Wildwood | 12:18:48 | -23.1 | Dark | Down | 67.8 | 305.3 | Up | 12:14:57 - 12:22:40 | -1029 |
| CPSLO | 12:19:03 | -24.7 | Dark | Down | 69.9 | 304.0 | Up | 12:15:11 - 12:22:54 | -1039 |
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, (2020/10/24 12:22UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 28.21 116 3Iot Aur 04:56:59.6 +33:09:58 2.7 11.25 124 PPM 047482 04:54:51.2 +44:03:38 6.0 0.38 124 PPM 047525 04:56:56.7 +44:39:14 9.4 0.33 124 PPM 047516 04:56:21.5 +44:28:12 10.5 0.14 124 54598 04:55:40.4 +44:24:33 11.9 124 Positions are for J2000
Event circumstances last updated at 2020/10/23 21:42:58 UT
Marc W. Buie, Southwest Research Institute