Event between (523741) 14TY85 and star GA1160:00557154 with event index number of 1024827
Geocentric closest approach at 2020/12/25 10:12:03 UTC
J2000 position of star is 03:45:47.8 +26:32:39
Equinox of date position of star is 03:47:04.0 +26:36:31
Stellar brightness G=12.8,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 21 degrees from the moon.
Moon is 80% illuminated.
TNO apparent brightness V=21.8
[RECON map]
TNO is 32.7 AU from the Sun
and 31.8 AU from the Earth.
The TNO is moving 19.7
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 59 seconds.
The 1-sigma cross-track error in the shadow position is
1155 km.
The sky-plane scale is
23090.1 km/arcsec.
The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 14.6 sec chord
Diameter=117.7 km assuming a 30% albedo -- 6.0 sec chord
Dynamical classification is CENTAURS
Star training set for 523741, (2020/12/25 10:12UT) Object RA Dec mag sep mel Aldebaran 04:37:07.6 +16:32:59 0.8 15.36 28 44Zet Per 03:55:27.4 +31:56:39 2.8 5.64 26 PPM 092967 03:51:34.9 +25:38:28 5.5 1.40 21 PPM 092784 03:45:02.1 +26:26:46 8.3 0.48 21 PPM 092820 03:46:31.4 +26:57:21 8.6 0.37 21 PPM 092832 03:46:52.9 +26:33:52 10.4 0.06 21 523741 03:47:04.0 +26:36:31 12.8 21 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 26.2 km
RECON observability=1.0 and success probability=1.9%
| 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 | 10:08:09 | -53.0 | Dark | Up | 32.2 | 273.9 | Up | 10:02:46 - 10:13:31 | 4943 |
| Kelowna | 10:08:07 | -53.4 | Dark | Up | 32.3 | 274.1 | Up | 10:02:44 - 10:13:29 | 4903 |
| Peachland | 10:08:08 | -53.6 | Dark | Up | 32.5 | 273.9 | Up | 10:02:45 - 10:13:30 | 4886 |
| Summerland | 10:08:06 | -53.6 | Dark | Up | 32.4 | 274.1 | Up | 10:02:43 - 10:13:28 | 4874 |
| Penticton | 10:08:06 | -53.6 | Dark | Up | 32.3 | 274.2 | Up | 10:02:43 - 10:13:28 | 4871 |
| Oliver | 10:08:05 | -53.8 | Dark | Up | 32.3 | 274.4 | Up | 10:02:43 - 10:13:28 | 4838 |
| Anarchist Mountain Observatory | 10:08:05 | -53.8 | Dark | Up | 32.2 | 274.7 | Up | 10:02:42 - 10:13:27 | 4826 |
| Tonasket | 10:08:03 | -54.0 | Dark | Up | 32.2 | 274.8 | Up | 10:02:41 - 10:13:26 | 4795 |
| Okanogan | 10:08:02 | -54.3 | Dark | Up | 32.3 | 274.9 | Up | 10:02:40 - 10:13:25 | 4760 |
| Brewster | 10:08:03 | -54.5 | Dark | Up | 32.4 | 274.9 | Up | 10:02:40 - 10:13:25 | 4729 |
| Manson/Chelan | 10:08:02 | -54.8 | Dark | Up | 32.6 | 274.8 | Up | 10:02:40 - 10:13:25 | 4700 |
| Victoria | 10:08:10 | -56.2 | Dark | Up | 34.8 | 272.1 | Up | 10:02:47 - 10:13:32 | 4684 |
| Wenatchee | 10:08:02 | -55.2 | Dark | Up | 32.7 | 275.0 | Up | 10:02:39 - 10:13:24 | 4651 |
| Ellensburg | 10:08:01 | -55.5 | Dark | Up | 32.8 | 275.1 | Up | 10:02:39 - 10:13:24 | 4606 |
| Pasco | 10:07:56 | -55.1 | Dark | Up | 31.8 | 276.5 | Up | 10:02:33 - 10:13:18 | 4570 |
| Yakima | 10:08:00 | -55.8 | Dark | Up | 32.8 | 275.3 | Up | 10:02:37 - 10:13:22 | 4566 |
| PNWRO | 10:07:55 | -55.1 | Dark | Up | 31.6 | 276.8 | Up | 10:02:33 - 10:13:18 | 4552 |
| Toppenish/White Swan | 10:07:59 | -55.8 | Dark | Up | 32.6 | 275.6 | Up | 10:02:36 - 10:13:21 | 4549 |
| Goldendale | 10:07:58 | -56.3 | Dark | Up | 32.9 | 275.6 | Up | 10:02:35 - 10:13:20 | 4485 |
| The Dalles | 10:07:58 | -56.7 | Dark | Up | 33.1 | 275.5 | Up | 10:02:35 - 10:13:20 | 4454 |
| Dunrhomin | 10:07:22 | -47.5 | Dark | Down | 20.7 | 287.8 | Low | 10:01:59 - 10:12:44 | 4426 |
| Maupin | 10:07:57 | -56.8 | Dark | Up | 33.0 | 275.9 | Up | 10:02:34 - 10:13:19 | 4416 |
| Redmond | 10:07:54 | -57.3 | Dark | Up | 33.0 | 276.4 | Up | 10:02:32 - 10:13:17 | 4325 |
| Sisters | 10:07:55 | -57.6 | Dark | Up | 33.3 | 276.1 | Up | 10:02:32 - 10:13:17 | 4317 |
| Bend | 10:07:54 | -57.5 | Dark | Up | 33.1 | 276.4 | Up | 10:02:32 - 10:13:17 | 4301 |
| Oregon Observatory | 10:07:54 | -57.7 | Dark | Up | 33.1 | 276.5 | Up | 10:02:31 - 10:13:16 | 4280 |
| La Pine/Gilchrist | 10:07:54 | -57.8 | Dark | Up | 33.1 | 276.6 | Up | 10:02:31 - 10:13:16 | 4258 |
| North Lake | 10:07:51 | -57.7 | Dark | Up | 32.7 | 277.2 | Up | 10:02:29 - 10:13:14 | 4231 |
| Paisley | 10:07:49 | -57.7 | Dark | Up | 32.3 | 277.8 | Up | 10:02:26 - 10:13:11 | 4186 |
| Lakeview | 10:07:48 | -57.8 | Dark | Up | 32.1 | 278.2 | Up | 10:02:26 - 10:13:11 | 4141 |
| Klamath Falls | 10:07:51 | -58.7 | Dark | Up | 33.2 | 277.3 | Up | 10:02:29 - 10:13:14 | 4107 |
| Cedarville | 10:07:46 | -58.0 | Dark | Up | 31.9 | 278.7 | Up | 10:02:24 - 10:13:09 | 4080 |
| Fall River/Burney | 10:07:48 | -59.0 | Dark | Up | 32.7 | 278.3 | Up | 10:02:25 - 10:13:10 | 3999 |
| Susanville | 10:07:44 | -58.7 | Dark | Up | 32.1 | 279.1 | Up | 10:02:22 - 10:13:07 | 3956 |
| Gimple | 10:07:44 | -59.0 | Dark | Up | 32.2 | 279.2 | Up | 10:02:21 - 10:13:06 | 3922 |
| Greenville | 10:07:44 | -59.1 | Dark | Up | 32.3 | 279.1 | Up | 10:02:21 - 10:13:06 | 3920 |
| Portola | 10:07:42 | -58.9 | Dark | Up | 31.9 | 279.6 | Up | 10:02:20 - 10:13:05 | 3900 |
| Quincy | 10:07:43 | -59.1 | Dark | Up | 32.2 | 279.3 | Up | 10:02:21 - 10:13:06 | 3899 |
| Reno | 10:07:41 | -58.5 | Dark | Up | 31.3 | 280.1 | Up | 10:02:18 - 10:13:03 | 3892 |
| Carson City | 10:07:40 | -58.6 | Dark | Up | 31.3 | 280.3 | Up | 10:02:17 - 10:13:02 | 3856 |
| Yerington | 10:07:39 | -58.2 | Dark | Up | 30.7 | 280.8 | Up | 10:02:16 - 10:13:01 | 3855 |
| Gardnerville | 10:07:40 | -58.7 | Dark | Up | 31.2 | 280.5 | Up | 10:02:17 - 10:13:02 | 3833 |
| Hawthorne | 10:07:36 | -58.0 | Dark | Up | 30.3 | 281.4 | Up | 10:02:14 - 10:12:59 | 3823 |
| Tonopah | 10:07:32 | -57.1 | Dark | Up | 29.1 | 282.4 | Low | 10:02:10 - 10:12:55 | 3819 |
| Lee Vining | 10:07:35 | -58.5 | Dark | Up | 30.5 | 281.4 | Up | 10:02:13 - 10:12:58 | 3752 |
| Indian Springs | 10:07:27 | -56.3 | Dark | Up | 27.6 | 283.9 | Low | 10:02:04 - 10:12:49 | 3717 |
| Beatty | 10:07:29 | -57.0 | Dark | Up | 28.5 | 283.2 | Low | 10:02:06 - 10:12:51 | 3716 |
| Bishop | 10:07:33 | -58.2 | Dark | Up | 29.8 | 282.1 | Low | 10:02:10 - 10:12:55 | 3713 |
| Henderson | 10:07:24 | -55.9 | Dark | Up | 26.9 | 284.5 | Low | 10:02:02 - 10:12:47 | 3686 |
| Patrick | 10:07:21 | -55.1 | Dark | Up | 25.9 | 285.3 | Low | 10:01:59 - 10:12:44 | 3659 |
| Kingman/Dolan Springs | 10:07:21 | -55.3 | Dark | Up | 26.0 | 285.4 | Low | 10:01:59 - 10:12:44 | 3631 |
| Laughlin/Bullhead City | 10:07:22 | -55.7 | Dark | Up | 26.4 | 285.1 | Low | 10:02:00 - 10:12:45 | 3611 |
| Mohave Valley | 10:07:21 | -55.7 | Dark | Up | 26.3 | 285.3 | Low | 10:01:59 - 10:12:44 | 3584 |
| George/Scottsdale | 10:07:15 | -53.7 | Dark | Up | 23.8 | 287.0 | Low | 10:01:52 - 10:12:37 | 3558 |
| Lake Havasu City | 10:07:20 | -55.6 | Dark | Up | 26.0 | 285.6 | Low | 10:01:58 - 10:12:43 | 3552 |
| Parker | 10:07:20 | -55.6 | Dark | Up | 25.9 | 285.7 | Low | 10:01:57 - 10:12:42 | 3518 |
| Blythe | 10:07:19 | -56.0 | Dark | Up | 26.0 | 285.8 | Low | 10:01:56 - 10:12:41 | 3455 |
| CPSLO | 10:07:34 | -60.5 | Dark | Up | 31.2 | 282.2 | Up | 10:02:11 - 10:12:56 | 3436 |
| Idyllwild | 10:07:23 | -57.7 | Dark | Up | 27.7 | 284.9 | Low | 10:02:00 - 10:12:45 | 3397 |
| Wildwood | 10:07:27 | -59.1 | Dark | Up | 29.3 | 283.8 | Low | 10:02:04 - 10:12:49 | 3374 |
| Calipatria | 10:07:19 | -56.8 | Dark | Up | 26.6 | 285.7 | Low | 10:01:57 - 10:12:42 | 3374 |
| Yuma | 10:07:17 | -56.1 | Dark | Up | 25.8 | 286.3 | Low | 10:01:55 - 10:12:40 | 3360 |
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 523741, (2020/12/25 10:12UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 15.36 28 44Zet Per 03:54:07.9 +31:53:01 2.8 5.64 26 PPM 092967 03:50:19.0 +25:34:43 5.5 1.40 21 PPM 092784 03:43:46.0 +26:22:52 8.3 0.48 21 PPM 092820 03:45:15.0 +26:53:29 8.6 0.37 21 PPM 092832 03:45:36.7 +26:30:00 10.4 0.06 21 523741 03:45:47.8 +26:32:39 12.8 21 Positions are for J2000
Event circumstances last updated at 2020/12/23 00:17:48 UT
Marc W. Buie, Southwest Research Institute