Event between (342842) 08YB3 and star GA1440:05643689 with event index number of 337002
Geocentric closest approach at 2020/09/20 09:59:22 UTC
J2000 position of star is 19:49:16.9 +55:56:43
Equinox of date position of star is 19:49:44.1 +55:59:54
Stellar brightness G=14.3,
use SENSEUP=64
Star is 93 degrees from the moon.
Moon is 13% illuminated.
TNO apparent brightness V=21.6
[RECON map]
TNO is 13.4 AU from the Sun
and 13.1 AU from the Earth.
The TNO is moving 35.8
km/sec on the sky relative to the star, or,
13.6 arcsec/hr.
The 1-sigma error in the time of the event is 29 seconds.
The 1-sigma cross-track error in the shadow position is
613 km.
The sky-plane scale is
9508.8 km/arcsec.
The TNO has an absolute magnitude Hv=10.0
Diameter=83.2 km assuming a 5% albedo -- 1.7 sec chord
Diameter=34.0 km assuming a 30% albedo -- 0.7 sec chord
Dynamical classification is CENTAURR
Star training set for 342842, (2020/09/20 09:59UT) Object RA Dec mag sep mel Deneb 20:42:08.3 +45:21:19 1.3 13.45 99 Alderamin 21:19:04.4 +62:40:26 2.4 13.10 105 PPM 037938 19:56:46.0 +56:44:36 6.2 1.23 94 PPM 037806 19:49:04.1 +55:46:40 8.0 0.24 93 PPM 037804 19:48:53.5 +56:03:05 10.0 0.13 93 PPM 037818 19:49:33.6 +55:59:36 10.3 0.03 93 342842 19:49:44.2 +55:59:54 14.3 93 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 15.2 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) |
| Clarence Fulton | 09:57:26 | -32.2 | Dark | Down | 38.4 | 314.4 | Up | 09:54:31 - 10:00:21 | -3589 |
| Kelowna | 09:57:26 | -32.5 | Dark | Down | 38.2 | 314.6 | Up | 09:54:31 - 10:00:21 | -3629 |
| Peachland | 09:57:27 | -32.8 | Dark | Down | 38.3 | 314.5 | Up | 09:54:32 - 10:00:22 | -3646 |
| Summerland | 09:57:27 | -32.8 | Dark | Down | 38.1 | 314.7 | Up | 09:54:32 - 10:00:22 | -3658 |
| Penticton | 09:57:26 | -32.8 | Dark | Down | 38.0 | 314.7 | Up | 09:54:31 - 10:00:21 | -3661 |
| Oliver | 09:57:26 | -33.1 | Dark | Down | 37.8 | 314.9 | Up | 09:54:31 - 10:00:21 | -3694 |
| Anarchist Mountain Observatory | 09:57:27 | -33.2 | Dark | Down | 37.6 | 315.1 | Up | 09:54:32 - 10:00:22 | -3705 |
| Tonasket | 09:57:27 | -33.4 | Dark | Down | 37.4 | 315.2 | Up | 09:54:32 - 10:00:22 | -3735 |
| Okanogan | 09:57:27 | -33.8 | Dark | Down | 37.2 | 315.4 | Up | 09:54:32 - 10:00:22 | -3769 |
| Brewster | 09:57:27 | -34.1 | Dark | Down | 37.1 | 315.4 | Up | 09:54:32 - 10:00:22 | -3799 |
| Manson/Chelan | 09:57:28 | -34.4 | Dark | Down | 37.1 | 315.4 | Up | 09:54:33 - 10:00:23 | -3828 |
| Victoria | 09:57:33 | -35.1 | Dark | Down | 39.1 | 313.8 | Up | 09:54:38 - 10:00:28 | -3843 |
| Entiat | 09:57:28 | -34.6 | Dark | Down | 37.0 | 315.5 | Up | 09:54:33 - 10:00:23 | -3849 |
| Wenatchee | 09:57:28 | -34.8 | Dark | Down | 36.9 | 315.6 | Up | 09:54:33 - 10:00:23 | -3875 |
| Ellensburg | 09:57:29 | -35.2 | Dark | Down | 36.7 | 315.7 | Up | 09:54:34 - 10:00:24 | -3918 |
| Niwot | 09:57:06 | -31.6 | Dark | Down | 24.3 | 323.9 | Low | 09:54:11 - 10:00:01 | -3941 |
| Pasco | 09:57:27 | -35.2 | Dark | Down | 35.5 | 316.6 | Up | 09:54:32 - 10:00:22 | -3948 |
| SwRI | 09:57:06 | -31.7 | Dark | Down | 24.3 | 323.9 | Low | 09:54:11 - 10:00:01 | -3953 |
| Yakima | 09:57:29 | -35.6 | Dark | Down | 36.4 | 315.9 | Up | 09:54:34 - 10:00:24 | -3955 |
| PNWRO | 09:57:26 | -35.3 | Dark | Down | 35.2 | 316.8 | Up | 09:54:31 - 10:00:21 | -3965 |
| Toppenish/White Swan | 09:57:29 | -35.7 | Dark | Down | 36.2 | 316.1 | Up | 09:54:34 - 10:00:24 | -3971 |
| Goldendale | 09:57:29 | -36.3 | Dark | Down | 36.0 | 316.2 | Up | 09:54:34 - 10:00:24 | -4031 |
| The Dalles | 09:57:30 | -36.6 | Dark | Down | 36.0 | 316.2 | Up | 09:54:35 - 10:00:25 | -4060 |
| Maupin | 09:57:30 | -36.9 | Dark | Down | 35.6 | 316.5 | Up | 09:54:35 - 10:00:25 | -4095 |
| Redmond | 09:57:30 | -37.6 | Dark | Down | 35.0 | 316.9 | Up | 09:54:35 - 10:00:25 | -4178 |
| Sisters | 09:57:31 | -37.8 | Dark | Down | 35.2 | 316.7 | Up | 09:54:36 - 10:00:26 | -4186 |
| Bend | 09:57:31 | -37.9 | Dark | Down | 34.9 | 316.9 | Up | 09:54:36 - 10:00:26 | -4200 |
| Oregon Observatory | 09:57:31 | -38.1 | Dark | Down | 34.9 | 317.0 | Up | 09:54:36 - 10:00:26 | -4219 |
| La Pine/Gilchrist | 09:57:31 | -38.2 | Dark | Down | 34.8 | 317.0 | Up | 09:54:36 - 10:00:26 | -4238 |
| North Lake | 09:57:31 | -38.3 | Dark | Down | 34.1 | 317.4 | Up | 09:54:36 - 10:00:26 | -4261 |
| Paisley | 09:57:30 | -38.6 | Dark | Down | 33.6 | 317.8 | Up | 09:54:35 - 10:00:25 | -4300 |
| Lakeview | 09:57:29 | -38.8 | Dark | Down | 33.1 | 318.1 | Up | 09:54:34 - 10:00:24 | -4338 |
| Klamath Falls | 09:57:32 | -39.5 | Dark | Down | 33.8 | 317.6 | Up | 09:54:37 - 10:00:27 | -4372 |
| Cedarville | 09:57:29 | -39.3 | Dark | Down | 32.5 | 318.4 | Up | 09:54:34 - 10:00:24 | -4389 |
| Fall River/Burney | 09:57:32 | -40.2 | Dark | Down | 32.7 | 318.3 | Up | 09:54:37 - 10:00:27 | -4463 |
| Susanville | 09:57:31 | -40.3 | Dark | Down | 31.9 | 318.7 | Up | 09:54:36 - 10:00:26 | -4497 |
| Gimple | 09:57:32 | -40.6 | Dark | Down | 31.8 | 318.8 | Up | 09:54:37 - 10:00:27 | -4526 |
| Greenville | 09:57:32 | -40.7 | Dark | Down | 31.8 | 318.8 | Up | 09:54:37 - 10:00:27 | -4528 |
| Portola | 09:57:31 | -40.7 | Dark | Down | 31.4 | 319.0 | Up | 09:54:36 - 10:00:26 | -4542 |
| Quincy | 09:57:32 | -40.8 | Dark | Down | 31.7 | 318.9 | Up | 09:54:37 - 10:00:27 | -4545 |
| Reno | 09:57:30 | -40.5 | Dark | Down | 30.8 | 319.3 | Up | 09:54:35 - 10:00:25 | -4546 |
| Yerington | 09:57:29 | -40.6 | Dark | Down | 30.1 | 319.7 | Up | 09:54:34 - 10:00:24 | -4572 |
| Carson City | 09:57:30 | -40.8 | Dark | Down | 30.5 | 319.5 | Up | 09:54:35 - 10:00:25 | -4575 |
| Tonopah | 09:57:26 | -40.2 | Dark | Down | 28.4 | 320.6 | Low | 09:54:31 - 10:00:21 | -4586 |
| Gardnerville | 09:57:30 | -40.9 | Dark | Down | 30.3 | 319.6 | Up | 09:54:35 - 10:00:25 | -4594 |
| Hawthorne | 09:57:28 | -40.6 | Dark | Down | 29.5 | 320.0 | Low | 09:54:33 - 10:00:23 | -4594 |
| Indian Springs | 09:57:24 | -40.3 | Dark | Down | 26.5 | 321.5 | Low | 09:54:29 - 10:00:19 | -4650 |
| Lee Vining | 09:57:30 | -41.3 | Dark | Down | 29.3 | 320.1 | Low | 09:54:35 - 10:00:25 | -4655 |
| Beatty | 09:57:26 | -40.7 | Dark | Down | 27.3 | 321.1 | Low | 09:54:31 - 10:00:21 | -4662 |
| Henderson | 09:57:23 | -40.2 | Dark | Down | 25.7 | 321.9 | Low | 09:54:28 - 10:00:18 | -4665 |
| DCO | 09:57:20 | -39.6 | Dark | Down | 24.1 | 322.7 | Low | 09:54:25 - 10:00:15 | -4666 |
| Patrick | 09:57:21 | -39.9 | Dark | Down | 24.7 | 322.4 | Low | 09:54:26 - 10:00:16 | -4671 |
| Bishop | 09:57:29 | -41.3 | Dark | Down | 28.4 | 320.5 | Low | 09:54:34 - 10:00:24 | -4679 |
| Kingman/Dolan Springs | 09:57:21 | -40.1 | Dark | Down | 24.6 | 322.4 | Low | 09:54:26 - 10:00:16 | -4695 |
| Searchlight/Boulder City | 09:57:23 | -40.5 | Dark | Down | 25.2 | 322.1 | Low | 09:54:28 - 10:00:18 | -4707 |
| George/Scottsdale | 09:57:19 | -39.6 | Dark | Down | 22.3 | 323.4 | Low | 09:54:24 - 10:00:14 | -4714 |
| Laughlin/Bullhead City | 09:57:23 | -40.5 | Dark | Down | 24.8 | 322.3 | Low | 09:54:28 - 10:00:18 | -4716 |
| Mohave Valley | 09:57:23 | -40.6 | Dark | Down | 24.6 | 322.3 | Low | 09:54:28 - 10:00:18 | -4736 |
| Lake Havasu City | 09:57:22 | -40.7 | Dark | Down | 24.2 | 322.5 | Low | 09:54:27 - 10:00:17 | -4756 |
| Parker | 09:57:22 | -40.9 | Dark | Down | 23.9 | 322.6 | Low | 09:54:27 - 10:00:17 | -4781 |
| Blythe | 09:57:23 | -41.4 | Dark | Down | 23.6 | 322.7 | Low | 09:54:28 - 10:00:18 | -4831 |
| Yuma | 09:57:24 | -42.0 | Dark | Down | 22.9 | 322.9 | Low | 09:54:29 - 10:00:19 | -4900 |
| Idyllwild | 09:57:27 | -42.7 | Dark | Down | 24.8 | 322.1 | Low | 09:54:32 - 10:00:22 | -4902 |
| Calipatria | 09:57:26 | -42.3 | Dark | Down | 23.7 | 322.6 | Low | 09:54:31 - 10:00:21 | -4903 |
| CPSLO | 09:57:34 | -44.0 | Dark | Down | 28.0 | 320.6 | Low | 09:54:39 - 10:00:29 | -4910 |
| Wildwood | 09:57:31 | -43.7 | Dark | Down | 26.0 | 321.5 | Low | 09:54:36 - 10:00:26 | -4939 |
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 342842, (2020/09/20 09:59UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 13.45 99 Alderamin 21:18:35.2 +62:35:09 2.4 13.10 105 PPM 037938 19:56:19.1 +56:41:13 6.2 1.23 94 PPM 037806 19:48:36.5 +55:43:30 8.0 0.24 93 PPM 037804 19:48:26.3 +55:59:55 10.0 0.13 93 PPM 037818 19:49:06.3 +55:56:26 10.3 0.03 93 342842 19:49:16.9 +55:56:43 14.3 93 Positions are for J2000
Event circumstances last updated at 2020/08/28 21:24:35 UT
Marc W. Buie, Southwest Research Institute