Event between (341275) 07RG283 and star GA1300:03287452 with event index number of 1112757
Geocentric closest approach at 2021/04/22 04:51:57 UTC
J2000 position of star is 06:01:53.0 +41:33:44
Equinox of date position of star is 06:03:14.7 +41:33:40
Stellar brightness G=15.7,
use SENSEUP=128
Star is 55 degrees from the moon.
Moon is 70% illuminated.
TNO apparent brightness V=20.8
[RECON map]
TNO is 15.3 AU from the Sun
and 15.8 AU from the Earth.
The TNO is moving 25.5
km/sec on the sky relative to the star, or,
8.0 arcsec/hr.
The 1-sigma error in the time of the event is 326 seconds.
The 1-sigma cross-track error in the shadow position is
4953 km.
The sky-plane scale is
11464.2 km/arcsec.
The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 4.5 sec chord
Diameter=46.9 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
Star training set for 341275, (2021/04/22 04:52UT) Object RA Dec mag sep mel Pollux 07:46:37.1 +27:58:23 1.1 25.03 32 34Bet Aur 06:01:05.5 +44:56:50 1.9 3.41 56 38 Aur 06:04:50.1 +42:54:31 6.1 1.37 55 PPM 048651 06:02:37.3 +41:56:14 7.6 0.40 55 PPM 048680 06:04:18.8 +41:22:02 9.1 0.26 55 341275 06:03:23.7 +41:33:39 15.7 55 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
2.8 sigma about the mid-time.
The median site spacing is 5.8 km
RECON observability=1.0 and success probability=5.3%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Niwot | 04:53:57 | -30.1 | Dark | Up | 26.4 | 303.4 | Low | 04:38:57 - 05:08:57 | 4273 |
| SwRI | 04:53:58 | -30.2 | Dark | Up | 26.4 | 303.4 | Low | 04:38:58 - 05:08:58 | 4265 |
| Kelowna | 04:53:06 | -16.1 | AT | Up | 39.9 | 290.5 | Up | 04:38:06 - 05:08:06 | 3829 |
| Anarchist Mountain Observatory | 04:53:06 | -16.7 | AT | Up | 39.5 | 291.2 | Up | 04:38:06 - 05:08:06 | 3820 |
| Penticton | 04:53:06 | -16.2 | AT | Up | 39.9 | 290.7 | Up | 04:38:06 - 05:08:06 | 3816 |
| Oroville | 04:53:06 | -16.7 | AT | Up | 39.6 | 291.2 | Up | 04:38:06 - 05:08:06 | 3816 |
| Okanagan Falls | 04:53:06 | -16.4 | AT | Up | 39.8 | 290.8 | Up | 04:38:06 - 05:08:06 | 3813 |
| Oliver | 04:53:06 | -16.5 | AT | Up | 39.7 | 290.9 | Up | 04:38:06 - 05:08:06 | 3812 |
| Summerland | 04:53:06 | -16.1 | AT | Up | 39.9 | 290.6 | Up | 04:38:06 - 05:08:06 | 3811 |
| Tonasket | 04:53:31 | -16.9 | AT | Up | 39.4 | 291.4 | Up | 04:38:31 - 05:08:31 | 3759 |
| Okanogan | 04:53:33 | -17.1 | AT | Up | 39.4 | 291.6 | Up | 04:38:33 - 05:08:33 | 3741 |
| Brewster | 04:53:33 | -17.2 | AT | Up | 39.4 | 291.7 | Up | 04:38:33 - 05:08:33 | 3723 |
| PNWRO | 04:53:42 | -19.0 | Dark | Up | 38.0 | 293.7 | Up | 04:38:42 - 05:08:42 | 3709 |
| Pasco | 04:53:41 | -18.8 | Dark | Up | 38.3 | 293.5 | Up | 04:38:41 - 05:08:41 | 3704 |
| Manson/Chelan | 04:53:34 | -17.1 | AT | Up | 39.6 | 291.7 | Up | 04:38:34 - 05:08:34 | 3698 |
| Entiat | 04:53:35 | -17.2 | AT | Up | 39.5 | 291.8 | Up | 04:38:35 - 05:08:35 | 3688 |
| George/Umatilla | 04:53:42 | -18.9 | Dark | Up | 38.3 | 293.6 | Up | 04:38:42 - 05:08:42 | 3682 |
| Wenatchee | 04:53:36 | -17.4 | AT | Up | 39.5 | 292.0 | Up | 04:38:36 - 05:08:36 | 3675 |
| DCO | 04:54:21 | -29.8 | Dark | Up | 28.9 | 302.6 | Low | 04:39:21 - 05:09:21 | 3658 |
| Ellensburg | 04:53:38 | -17.5 | AT | Up | 39.5 | 292.2 | Up | 04:38:38 - 05:08:38 | 3651 |
| Toppenish/White Swan | 04:53:40 | -18.0 | Dark | Up | 39.1 | 292.7 | Up | 04:38:40 - 05:08:40 | 3639 |
| Yakima | 04:53:40 | -17.8 | AT | Up | 39.3 | 292.5 | Up | 04:38:40 - 05:08:40 | 3637 |
| Patrick | 04:54:21 | -29.2 | Dark | Up | 29.5 | 302.2 | Low | 04:39:21 - 05:09:21 | 3627 |
| Kingman/Dolan Springs | 04:54:21 | -29.2 | Dark | Up | 29.6 | 302.2 | Low | 04:39:21 - 05:09:21 | 3607 |
| Goldendale | 04:53:43 | -18.2 | Dark | Up | 39.2 | 292.9 | Up | 04:38:43 - 05:08:43 | 3598 |
| Henderson | 04:54:19 | -28.1 | Dark | Up | 30.7 | 301.5 | Up | 04:39:19 - 05:09:19 | 3584 |
| Laughlin/Bullhead City | 04:54:21 | -28.9 | Dark | Up | 29.9 | 302.1 | Low | 04:39:21 - 05:09:21 | 3575 |
| The Dalles | 04:53:43 | -18.1 | Dark | Up | 39.3 | 292.9 | Up | 04:38:43 - 05:08:43 | 3571 |
| Searchlight/Boulder City | 04:54:20 | -28.5 | Dark | Up | 30.3 | 301.8 | Up | 04:39:20 - 05:09:20 | 3565 |
| Mohave Valley | 04:54:22 | -29.1 | Dark | Up | 29.8 | 302.2 | Low | 04:39:22 - 05:09:22 | 3564 |
| Indian Springs | 04:54:16 | -27.3 | Dark | Up | 31.4 | 301.0 | Up | 04:39:16 - 05:09:16 | 3563 |
| Maupin | 04:53:45 | -18.5 | Dark | Up | 39.1 | 293.3 | Up | 04:38:45 - 05:08:45 | 3563 |
| Lake Havasu City | 04:54:24 | -29.6 | Dark | Up | 29.4 | 302.5 | Low | 04:39:24 - 05:09:24 | 3563 |
| Parker | 04:54:25 | -29.8 | Dark | Up | 29.2 | 302.7 | Low | 04:39:25 - 05:09:25 | 3550 |
| Madras/Culver | 04:53:48 | -18.8 | Dark | Up | 38.9 | 293.7 | Up | 04:38:48 - 05:08:48 | 3542 |
| Tonopah | 04:54:12 | -25.4 | Dark | Up | 33.2 | 299.6 | Up | 04:39:12 - 05:09:12 | 3529 |
| Redmond | 04:53:49 | -19.0 | Dark | Up | 38.8 | 293.9 | Up | 04:38:49 - 05:08:49 | 3527 |
| Bend | 04:53:50 | -19.1 | Dark | Up | 38.8 | 294.0 | Up | 04:38:50 - 05:08:50 | 3511 |
| Beatty | 04:54:16 | -26.5 | Dark | Up | 32.3 | 300.4 | Up | 04:39:16 - 05:09:16 | 3511 |
| Blythe | 04:54:27 | -30.0 | Dark | Up | 29.1 | 302.8 | Low | 04:39:27 - 05:09:27 | 3510 |
| Paisley | 04:53:55 | -20.4 | Dark | Up | 37.7 | 295.3 | Up | 04:38:55 - 05:08:55 | 3507 |
| North Lake | 04:53:53 | -19.8 | Dark | Up | 38.2 | 294.8 | Up | 04:38:53 - 05:08:53 | 3506 |
| Sisters | 04:53:48 | -18.8 | Dark | Up | 39.0 | 293.7 | Up | 04:38:48 - 05:08:48 | 3505 |
| Lakeview | 04:53:57 | -20.8 | Dark | Up | 37.3 | 295.8 | Up | 04:38:57 - 05:08:57 | 3499 |
| Oregon Observatory | 04:53:51 | -19.1 | Dark | Up | 38.8 | 294.1 | Up | 04:38:51 - 05:08:51 | 3498 |
| La Pine/Gilchrist | 04:53:51 | -19.2 | Dark | Up | 38.7 | 294.2 | Up | 04:38:51 - 05:08:51 | 3487 |
| Cedarville | 04:53:59 | -21.4 | Dark | Up | 36.9 | 296.3 | Up | 04:38:59 - 05:08:59 | 3485 |
| Yuma | 04:54:30 | -30.6 | Dark | Up | 28.6 | 303.2 | Low | 04:39:30 - 05:09:30 | 3468 |
| Hawthorne | 04:54:10 | -24.3 | Dark | Up | 34.4 | 298.8 | Up | 04:39:10 - 05:09:10 | 3462 |
| Yerington | 04:54:09 | -23.6 | Dark | Up | 35.0 | 298.4 | Up | 04:39:09 - 05:09:09 | 3448 |
| Reno | 04:54:07 | -22.9 | Dark | Up | 35.7 | 297.8 | Up | 04:39:07 - 05:09:07 | 3431 |
| Calipatria | 04:54:29 | -29.8 | Dark | Up | 29.5 | 302.8 | Low | 04:39:29 - 05:09:29 | 3430 |
| Bishop | 04:54:14 | -25.2 | Dark | Up | 33.7 | 299.6 | Up | 04:39:14 - 05:09:14 | 3430 |
| Chiloquin | 04:53:55 | -19.7 | Dark | Up | 38.5 | 294.9 | Up | 04:38:55 - 05:08:55 | 3426 |
| Tulelake | 04:53:58 | -20.4 | Dark | Up | 38.0 | 295.5 | Up | 04:38:58 - 05:08:58 | 3425 |
| Lone Pine | 04:54:17 | -25.9 | Dark | Up | 33.1 | 300.2 | Up | 04:39:17 - 05:09:17 | 3419 |
| Carson City | 04:54:08 | -23.1 | Dark | Up | 35.6 | 298.0 | Up | 04:39:08 - 05:09:08 | 3418 |
| Klamath Falls | 04:53:56 | -20.0 | Dark | Up | 38.3 | 295.1 | Up | 04:38:56 - 05:08:56 | 3418 |
| Susanville | 04:54:04 | -21.8 | Dark | Up | 36.7 | 296.9 | Up | 04:39:04 - 05:09:04 | 3415 |
| Gardnerville | 04:54:09 | -23.3 | Dark | Up | 35.4 | 298.2 | Up | 04:39:09 - 05:09:09 | 3411 |
| Lee Vining | 04:54:13 | -24.3 | Dark | Up | 34.5 | 299.0 | Up | 04:39:13 - 05:09:13 | 3410 |
| Portola | 04:54:06 | -22.3 | Dark | Up | 36.3 | 297.3 | Up | 04:39:06 - 05:09:06 | 3402 |
| Fall River/Burney | 04:54:01 | -21.0 | Dark | Up | 37.5 | 296.1 | Up | 04:39:01 - 05:09:01 | 3395 |
| Gimple | 04:54:05 | -21.9 | Dark | Up | 36.7 | 297.0 | Up | 04:39:05 - 05:09:05 | 3391 |
| Greenville | 04:54:04 | -21.8 | Dark | Up | 36.8 | 296.9 | Up | 04:39:04 - 05:09:04 | 3386 |
| Idyllwild | 04:54:27 | -28.6 | Dark | Up | 30.6 | 302.1 | Up | 04:39:27 - 05:09:27 | 3382 |
| Quincy | 04:54:06 | -22.0 | Dark | Up | 36.7 | 297.1 | Up | 04:39:06 - 05:09:06 | 3378 |
| Wildwood | 04:54:26 | -27.2 | Dark | Up | 32.1 | 301.4 | Up | 04:39:26 - 05:09:26 | 3278 |
| CPSLO | 04:54:22 | -25.1 | Dark | Up | 34.2 | 300.1 | Up | 04:39:22 - 05:09:22 | 3200 |
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 341275, (2021/04/22 04:52UT) Object RA Dec mag sep mel Pollux 07:45:18.0 +28:01:33 1.1 25.03 32 34Bet Aur 05:59:31.6 +44:56:51 1.9 3.41 56 38 Aur 06:03:18.2 +42:54:39 6.1 1.37 55 PPM 048651 06:01:06.2 +41:56:17 7.6 0.40 55 PPM 048680 06:02:48.2 +41:22:08 9.1 0.26 55 341275 06:01:53.0 +41:33:44 15.7 55 Positions are for J2000
Event circumstances last updated at 2019/03/12 03:27:44 UT
Marc W. Buie, Southwest Research Institute