Event between (54598) Bienor and star GA1340:03071300 with event index number of 1104993
Geocentric closest approach at 2021/12/08 02:00:51 UTC
J2000 position of star is 05:27:23.1 +44:47:10
Equinox of date position of star is 05:28:59.4 +44:48:11
Stellar brightness G=15.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 134 degrees from the moon.
Moon is 20% illuminated.
TNO apparent brightness V=19.0
[RECON map]
TNO is 14.0 AU from the Sun
and 13.1 AU from the Earth.
The TNO is moving 21.5
km/sec on the sky relative to the star, or,
8.2 arcsec/hr.
The 1-sigma error in the time of the event is 27 seconds.
The 1-sigma cross-track error in the shadow position is
474 km.
The sky-plane scale is
9467.3 km/arcsec.
The TNO has an absolute magnitude Hv=7.5
Diameter=187.1 km assuming a 5% albedo -- 8.7 sec chord
Diameter=76.4 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is CENTAURR
Star training set for 54598, (2021/12/08 02:01UT) Object RA Dec mag sep mel Aldebaran 04:37:10.9 +16:33:06 0.8 30.28 120 34Bet Aur 06:01:08.3 +44:56:50 1.9 5.70 139 PPM 048217 05:35:02.5 +42:07:21 6.2 2.90 135 PPM 048132 05:29:34.2 +44:55:40 8.5 0.16 134 54598 05:28:59.4 +44:48:11 15.4 134 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 16.7 km
RECON observability=1.0 and success probability=0.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Victoria | 02:04:02 | -16.6 | AT | Up | 28.0 | 52.9 | Low | 02:01:18 - 02:06:47 | 4243 |
| Kamloops | 02:03:55 | -19.0 | Dark | Up | 30.8 | 55.5 | Up | 02:01:10 - 02:06:39 | 4182 |
| Peachland | 02:03:59 | -19.2 | Dark | Up | 30.6 | 55.4 | Up | 02:01:14 - 02:06:43 | 4111 |
| Kelowna | 02:03:59 | -19.4 | Dark | Up | 30.8 | 55.6 | Up | 02:01:14 - 02:06:43 | 4101 |
| Summerland | 02:04:00 | -19.2 | Dark | Up | 30.6 | 55.4 | Up | 02:01:15 - 02:06:44 | 4100 |
| Penticton | 02:04:00 | -19.3 | Dark | Up | 30.6 | 55.4 | Up | 02:01:15 - 02:06:44 | 4091 |
| Oliver | 02:04:01 | -19.2 | Dark | Up | 30.4 | 55.2 | Up | 02:01:17 - 02:06:46 | 4075 |
| Anarchist Mountain Observatory | 02:04:02 | -19.3 | Dark | Up | 30.4 | 55.3 | Up | 02:01:17 - 02:06:46 | 4057 |
| Tonasket | 02:04:03 | -19.2 | Dark | Up | 30.2 | 55.1 | Up | 02:01:19 - 02:06:48 | 4046 |
| Manson/Chelan | 02:04:06 | -18.5 | Dark | Up | 29.3 | 54.3 | Low | 02:01:22 - 02:06:51 | 4045 |
| Okanogan | 02:04:04 | -19.0 | Dark | Up | 29.9 | 54.8 | Low | 02:01:20 - 02:06:49 | 4038 |
| Brewster | 02:04:05 | -18.8 | Dark | Up | 29.7 | 54.6 | Low | 02:01:21 - 02:06:50 | 4036 |
| Wenatchee | 02:04:08 | -18.3 | Dark | Up | 29.0 | 54.0 | Low | 02:01:24 - 02:06:53 | 4032 |
| Ellensburg | 02:04:09 | -18.1 | Dark | Up | 28.6 | 53.7 | Low | 02:01:25 - 02:06:54 | 4024 |
| Yakima | 02:04:11 | -18.0 | AT | Up | 28.4 | 53.5 | Low | 02:01:26 - 02:06:55 | 4005 |
| The Dalles | 02:04:15 | -17.3 | AT | Up | 27.4 | 52.8 | Low | 02:01:30 - 02:06:59 | 3991 |
| Toppenish/White Swan | 02:04:12 | -18.0 | Dark | Up | 28.3 | 53.5 | Low | 02:01:27 - 02:06:56 | 3986 |
| Goldendale | 02:04:14 | -17.6 | AT | Up | 27.8 | 53.1 | Low | 02:01:29 - 02:06:58 | 3982 |
| Maupin | 02:04:16 | -17.3 | AT | Up | 27.2 | 52.7 | Low | 02:01:32 - 02:07:01 | 3965 |
| Sisters | 02:04:19 | -16.7 | AT | Up | 26.4 | 52.1 | Low | 02:01:35 - 02:07:04 | 3949 |
| Redmond | 02:04:19 | -17.0 | AT | Up | 26.7 | 52.3 | Low | 02:01:35 - 02:07:04 | 3925 |
| Bend | 02:04:20 | -16.8 | AT | Up | 26.4 | 52.1 | Low | 02:01:36 - 02:07:05 | 3923 |
| Oregon Observatory | 02:04:21 | -16.7 | AT | Up | 26.3 | 52.0 | Low | 02:01:36 - 02:07:05 | 3921 |
| La Pine/Gilchrist | 02:04:21 | -16.6 | AT | Up | 26.1 | 51.9 | Low | 02:01:37 - 02:07:06 | 3914 |
| Pasco | 02:04:13 | -18.9 | Dark | Up | 29.0 | 54.1 | Low | 02:01:28 - 02:06:57 | 3911 |
| PNWRO | 02:04:14 | -19.0 | Dark | Up | 29.0 | 54.1 | Low | 02:01:29 - 02:06:58 | 3886 |
| Chiloquin | 02:04:25 | -16.1 | AT | Up | 25.2 | 51.3 | Low | 02:01:41 - 02:07:10 | 3878 |
| North Lake | 02:04:23 | -16.9 | AT | Up | 26.2 | 52.0 | Low | 02:01:39 - 02:07:08 | 3858 |
| Klamath Falls | 02:04:26 | -16.0 | AT | Up | 25.1 | 51.3 | Low | 02:01:42 - 02:07:11 | 3856 |
| Paisley | 02:04:26 | -17.0 | AT | Up | 26.1 | 52.0 | Low | 02:01:41 - 02:07:10 | 3809 |
| Fall River/Burney | 02:04:31 | -16.0 | AT | Up | 24.5 | 51.0 | Low | 02:01:47 - 02:07:16 | 3772 |
| Lakeview | 02:04:27 | -17.0 | AT | Up | 25.9 | 51.9 | Low | 02:01:43 - 02:07:12 | 3771 |
| Cedarville | 02:04:30 | -17.0 | AT | Up | 25.6 | 51.7 | Low | 02:01:45 - 02:07:14 | 3726 |
| Greenville | 02:04:34 | -16.1 | AT | Up | 24.2 | 50.9 | Low | 02:01:50 - 02:07:19 | 3696 |
| Susanville | 02:04:34 | -16.4 | AT | Up | 24.6 | 51.1 | Low | 02:01:49 - 02:07:18 | 3694 |
| Gimple | 02:04:34 | -16.1 | AT | Up | 24.3 | 50.9 | Low | 02:01:50 - 02:07:19 | 3691 |
| Quincy | 02:04:35 | -16.0 | AT | Up | 24.1 | 50.8 | Low | 02:01:50 - 02:07:19 | 3685 |
| Portola | 02:04:35 | -16.3 | AT | Up | 24.3 | 51.0 | Low | 02:01:51 - 02:07:20 | 3649 |
| Reno | 02:04:36 | -16.7 | AT | Up | 24.6 | 51.2 | Low | 02:01:52 - 02:07:21 | 3595 |
| Carson City | 02:04:38 | -16.7 | AT | Up | 24.3 | 51.0 | Low | 02:01:53 - 02:07:22 | 3574 |
| Gardnerville | 02:04:39 | -16.6 | AT | Up | 24.2 | 51.0 | Low | 02:01:54 - 02:07:23 | 3557 |
| Sleaford | 02:03:47 | -28.1 | Dark | Up | 39.3 | 64.5 | Up | 02:01:03 - 02:06:32 | 3547 |
| Yerington | 02:04:39 | -17.1 | AT | Up | 24.6 | 51.2 | Low | 02:01:54 - 02:07:23 | 3524 |
| Hawthorne | 02:04:40 | -17.4 | AT | Up | 24.6 | 51.3 | Low | 02:01:56 - 02:07:25 | 3465 |
| Lee Vining | 02:04:42 | -16.8 | AT | Up | 24.0 | 50.9 | Low | 02:01:58 - 02:07:27 | 3462 |
| CPSLO | 02:04:50 | -14.9 | AT | Up | 21.4 | 49.5 | Low | 02:02:05 - 02:07:34 | 3402 |
| Bishop | 02:04:44 | -17.2 | AT | Up | 24.1 | 51.0 | Low | 02:02:00 - 02:07:29 | 3382 |
| Tonopah | 02:04:42 | -18.3 | Dark | Up | 25.2 | 51.7 | Low | 02:01:58 - 02:07:27 | 3350 |
| Beatty | 02:04:46 | -18.4 | Dark | Up | 24.8 | 51.4 | Low | 02:02:01 - 02:07:30 | 3251 |
| Wildwood | 02:04:54 | -16.2 | AT | Up | 21.9 | 49.8 | Low | 02:02:10 - 02:07:39 | 3195 |
| Indian Springs | 02:04:47 | -19.1 | Dark | Up | 25.3 | 51.7 | Low | 02:02:02 - 02:07:31 | 3163 |
| Henderson | 02:04:49 | -19.6 | Dark | Up | 25.4 | 51.8 | Low | 02:02:04 - 02:07:33 | 3085 |
| Idyllwild | 02:04:56 | -17.6 | AT | Up | 22.9 | 50.4 | Low | 02:02:11 - 02:07:40 | 3050 |
| Laughlin/Bullhead City | 02:04:51 | -19.7 | Dark | Up | 25.1 | 51.6 | Low | 02:02:06 - 02:07:35 | 3003 |
| Mohave Valley | 02:04:52 | -19.6 | Dark | Up | 25.0 | 51.5 | Low | 02:02:07 - 02:07:36 | 2985 |
| Patrick | 02:04:50 | -20.3 | Dark | Up | 25.7 | 51.9 | Low | 02:02:06 - 02:07:35 | 2974 |
| Kingman/Dolan Springs | 02:04:51 | -20.1 | Dark | Up | 25.5 | 51.8 | Low | 02:02:07 - 02:07:36 | 2971 |
| Lake Havasu City | 02:04:53 | -19.7 | Dark | Up | 24.9 | 51.4 | Low | 02:02:09 - 02:07:38 | 2943 |
| Calipatria | 02:04:57 | -18.4 | Dark | Up | 23.2 | 50.6 | Low | 02:02:13 - 02:07:42 | 2932 |
| Parker | 02:04:54 | -19.6 | Dark | Up | 24.7 | 51.3 | Low | 02:02:10 - 02:07:39 | 2918 |
| Blythe | 02:04:56 | -19.3 | Dark | Up | 24.2 | 51.0 | Low | 02:02:11 - 02:07:40 | 2903 |
| Yuma | 02:04:59 | -19.0 | Dark | Up | 23.6 | 50.7 | Low | 02:02:14 - 02:07:43 | 2845 |
| Dunrhomin | 02:04:31 | -27.9 | Dark | Up | 34.1 | 57.2 | Up | 02:01:47 - 02:07:16 | 2759 |
| George/Scottsdale | 02:04:55 | -21.5 | Dark | Up | 26.0 | 51.9 | Low | 02:02:11 - 02:07:40 | 2731 |
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, (2021/12/08 02:01UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 30.28 120 34Bet Aur 05:59:31.6 +44:56:51 1.9 5.70 139 PPM 048217 05:33:28.7 +42:06:32 6.2 2.90 135 PPM 048132 05:27:57.8 +44:54:40 8.5 0.16 134 54598 05:27:23.1 +44:47:10 15.4 134 Positions are for J2000
Event circumstances last updated at 2021/12/07 01:43:42 UT
Marc W. Buie, Southwest Research Institute