Event between (342842) 08YB3 and star UC4-768-053139 with event index number of 166142
Geocentric closest approach at 2018/11/25 06:40:33 UTC
J2000 position of star is 19:56:22.7 +63:34:41
Equinox of date position of star is 19:56:36.0 +63:37:40
Stellar brightness R=15.1,
use SENSEUP=128
Star is 92 degrees from the moon.
Moon is 95% illuminated.
TNO apparent brightness V=20.5
[RECON map]
TNO is 12.1 AU from the Sun
and 12.0 AU from the Earth.
The TNO is moving 35.6
km/sec on the sky relative to the star, or,
14.8 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
664 km.
The sky-plane scale is
8676.7 km/arcsec.
The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 2.3 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
Star training set for 342842, (2018/11/25 06:41UT) Object RA Dec mag sep mel Deneb 20:42:04.6 +45:20:55 1.3 19.37 104 Alderamin 21:19:01.8 +62:39:58 2.4 9.32 88 PPM 021877 19:58:42.6 +63:35:10 6.0 0.24 92 PPM 021868 19:58:09.7 +63:29:31 9.3 0.22 92 PPM 021858 19:56:52.8 +63:50:00 11.1 0.21 92 342842 19:56:36.4 +63:37:45 15.1 92 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 14.4 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) |
| Yuma | 06:40:23 | -74.4 | Dark | Up | 20.6 | 333.6 | Low | 06:37:39 - 06:43:07 | 4022 |
| Calipatria | 06:40:25 | -73.6 | Dark | Up | 21.4 | 333.3 | Low | 06:37:41 - 06:43:09 | 3997 |
| Blythe | 06:40:21 | -73.7 | Dark | Up | 21.4 | 333.4 | Low | 06:37:37 - 06:43:05 | 3986 |
| Parker | 06:40:20 | -73.5 | Dark | Up | 21.8 | 333.4 | Low | 06:37:36 - 06:43:04 | 3968 |
| Idyllwild | 06:40:27 | -72.5 | Dark | Up | 22.3 | 332.9 | Low | 06:37:43 - 06:43:11 | 3959 |
| Lake Havasu City | 06:40:20 | -73.2 | Dark | Up | 22.1 | 333.3 | Low | 06:37:36 - 06:43:04 | 3953 |
| DCO | 06:40:16 | -73.2 | Dark | Up | 22.3 | 333.5 | Low | 06:37:32 - 06:43:00 | 3937 |
| Mohave Valley | 06:40:20 | -72.8 | Dark | Up | 22.6 | 333.2 | Low | 06:37:36 - 06:43:04 | 3934 |
| Kingman/Dolan Springs | 06:40:19 | -72.8 | Dark | Up | 22.7 | 333.3 | Low | 06:37:35 - 06:43:03 | 3926 |
| Laughlin/Bullhead City | 06:40:19 | -72.5 | Dark | Up | 22.8 | 333.1 | Low | 06:37:35 - 06:43:03 | 3923 |
| Patrick | 06:40:18 | -72.7 | Dark | Up | 22.8 | 333.3 | Low | 06:37:34 - 06:43:02 | 3918 |
| Wildwood | 06:40:30 | -71.1 | Dark | Up | 23.4 | 332.3 | Low | 06:37:46 - 06:43:14 | 3918 |
| Searchlight/Boulder City | 06:40:20 | -72.1 | Dark | Up | 23.2 | 333.0 | Low | 06:37:36 - 06:43:04 | 3907 |
| Henderson | 06:40:19 | -71.6 | Dark | Up | 23.8 | 332.8 | Low | 06:37:35 - 06:43:03 | 3881 |
| Indian Springs | 06:40:20 | -70.9 | Dark | Up | 24.5 | 332.6 | Low | 06:37:36 - 06:43:04 | 3850 |
| CPSLO | 06:40:33 | -69.0 | Dark | Up | 25.2 | 331.6 | Low | 06:37:49 - 06:43:17 | 3834 |
| Beatty | 06:40:22 | -70.1 | Dark | Up | 25.2 | 332.2 | Low | 06:37:38 - 06:43:06 | 3823 |
| Lone Pine | 06:40:25 | -69.6 | Dark | Up | 25.4 | 331.9 | Low | 06:37:41 - 06:43:09 | 3820 |
| Bishop | 06:40:25 | -68.9 | Dark | Up | 26.2 | 331.7 | Low | 06:37:41 - 06:43:09 | 3781 |
| Tonopah | 06:40:22 | -69.0 | Dark | Up | 26.4 | 331.8 | Low | 06:37:38 - 06:43:06 | 3764 |
| Lee Vining | 06:40:26 | -68.1 | Dark | Up | 27.0 | 331.3 | Low | 06:37:42 - 06:43:10 | 3742 |
| Hawthorne | 06:40:24 | -67.9 | Dark | Up | 27.3 | 331.3 | Low | 06:37:40 - 06:43:08 | 3723 |
| Niwot | 06:39:53 | -70.6 | Dark | Up | 24.0 | 335.0 | Low | 06:37:09 - 06:42:37 | 3708 |
| Yerington | 06:40:24 | -67.3 | Dark | Up | 27.9 | 331.1 | Low | 06:37:40 - 06:43:08 | 3692 |
| Gardnerville | 06:40:26 | -67.0 | Dark | Up | 28.1 | 330.9 | Low | 06:37:42 - 06:43:10 | 3685 |
| Carson City | 06:40:26 | -66.8 | Dark | Up | 28.3 | 330.8 | Low | 06:37:42 - 06:43:10 | 3673 |
| Reno | 06:40:25 | -66.5 | Dark | Up | 28.6 | 330.7 | Low | 06:37:41 - 06:43:09 | 3655 |
| Portola | 06:40:26 | -66.0 | Dark | Up | 29.1 | 330.5 | Low | 06:37:42 - 06:43:10 | 3631 |
| Quincy | 06:40:27 | -65.6 | Dark | Up | 29.4 | 330.3 | Low | 06:37:43 - 06:43:11 | 3616 |
| Gimple | 06:40:26 | -65.5 | Dark | Up | 29.6 | 330.3 | Low | 06:37:42 - 06:43:10 | 3608 |
| Greenville | 06:40:27 | -65.5 | Dark | Up | 29.6 | 330.3 | Low | 06:37:43 - 06:43:11 | 3606 |
| Susanville | 06:40:26 | -65.4 | Dark | Up | 29.7 | 330.3 | Low | 06:37:42 - 06:43:10 | 3597 |
| Fall River/Burney | 06:40:26 | -64.6 | Dark | Up | 30.5 | 329.9 | Up | 06:37:42 - 06:43:10 | 3552 |
| Cedarville | 06:40:23 | -64.8 | Dark | Up | 30.5 | 330.1 | Up | 06:37:39 - 06:43:07 | 3548 |
| Lakeview | 06:40:22 | -64.2 | Dark | Up | 31.1 | 329.8 | Up | 06:37:38 - 06:43:06 | 3510 |
| Tulelake | 06:40:25 | -63.9 | Dark | Up | 31.4 | 329.6 | Up | 06:37:41 - 06:43:09 | 3503 |
| Klamath Falls | 06:40:25 | -63.5 | Dark | Up | 31.7 | 329.4 | Up | 06:37:41 - 06:43:09 | 3483 |
| Paisley | 06:40:22 | -63.7 | Dark | Up | 31.6 | 329.6 | Up | 06:37:38 - 06:43:06 | 3479 |
| Chiloquin | 06:40:25 | -63.2 | Dark | Up | 32.0 | 329.3 | Up | 06:37:41 - 06:43:09 | 3464 |
| North Lake | 06:40:22 | -63.2 | Dark | Up | 32.3 | 329.3 | Up | 06:37:38 - 06:43:06 | 3443 |
| La Pine/Gilchrist | 06:40:23 | -62.5 | Dark | Up | 32.9 | 329.0 | Up | 06:37:39 - 06:43:07 | 3409 |
| Oregon Observatory | 06:40:22 | -62.4 | Dark | Up | 33.0 | 329.0 | Up | 06:37:38 - 06:43:06 | 3398 |
| Bend | 06:40:22 | -62.3 | Dark | Up | 33.1 | 328.9 | Up | 06:37:38 - 06:43:06 | 3391 |
| Redmond | 06:40:21 | -62.2 | Dark | Up | 33.2 | 328.9 | Up | 06:37:37 - 06:43:05 | 3381 |
| Sisters | 06:40:22 | -62.0 | Dark | Up | 33.4 | 328.8 | Up | 06:37:38 - 06:43:06 | 3373 |
| Madras/Culver | 06:40:20 | -62.0 | Dark | Up | 33.5 | 328.8 | Up | 06:37:36 - 06:43:04 | 3361 |
| Maupin | 06:40:19 | -61.5 | Dark | Up | 34.0 | 328.6 | Up | 06:37:35 - 06:43:03 | 3330 |
| PNWRO | 06:40:14 | -61.7 | Dark | Up | 33.9 | 329.0 | Up | 06:37:30 - 06:42:58 | 3314 |
| George/Umatilla | 06:40:15 | -61.6 | Dark | Up | 34.0 | 328.9 | Up | 06:37:31 - 06:42:59 | 3313 |
| The Dalles | 06:40:19 | -61.2 | Dark | Up | 34.4 | 328.5 | Up | 06:37:35 - 06:43:03 | 3304 |
| Goldendale | 06:40:18 | -61.1 | Dark | Up | 34.4 | 328.5 | Up | 06:37:34 - 06:43:02 | 3297 |
| Pasco | 06:40:14 | -61.4 | Dark | Up | 34.2 | 328.9 | Up | 06:37:30 - 06:42:58 | 3296 |
| Toppenish/White Swan | 06:40:16 | -60.8 | Dark | Up | 34.8 | 328.4 | Up | 06:37:32 - 06:43:00 | 3270 |
| Yakima | 06:40:16 | -60.6 | Dark | Up | 35.0 | 328.3 | Up | 06:37:32 - 06:43:00 | 3254 |
| Ellensburg | 06:40:16 | -60.3 | Dark | Up | 35.3 | 328.1 | Up | 06:37:32 - 06:43:00 | 3230 |
| Wenatchee | 06:40:15 | -60.0 | Dark | Up | 35.6 | 328.0 | Up | 06:37:31 - 06:42:59 | 3208 |
| Entiat | 06:40:14 | -59.8 | Dark | Up | 35.8 | 328.0 | Up | 06:37:30 - 06:42:58 | 3193 |
| Manson/Chelan | 06:40:14 | -59.7 | Dark | Up | 36.0 | 327.9 | Up | 06:37:30 - 06:42:58 | 3180 |
| Brewster | 06:40:13 | -59.6 | Dark | Up | 36.0 | 328.0 | Up | 06:37:29 - 06:42:57 | 3172 |
| Okanogan | 06:40:12 | -59.4 | Dark | Up | 36.2 | 327.9 | Up | 06:37:28 - 06:42:56 | 3158 |
| Tonasket | 06:40:11 | -59.2 | Dark | Up | 36.4 | 327.8 | Up | 06:37:27 - 06:42:55 | 3138 |
| Oroville | 06:40:11 | -59.0 | Dark | Up | 36.6 | 327.7 | Up | 06:37:27 - 06:42:55 | 3123 |
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, (2018/11/25 06:41UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 19.37 104 Alderamin 21:18:35.2 +62:35:09 2.4 9.32 88 PPM 021877 19:58:28.6 +63:32:03 6.0 0.24 92 PPM 021868 19:57:55.6 +63:26:24 9.3 0.22 92 PPM 021858 19:56:39.5 +63:46:55 11.1 0.21 92 342842 19:56:22.7 +63:34:41 15.1 92 Positions are for J2000
Event circumstances last updated at 2018/05/24 01:57:52 UT
Marc W. Buie, Southwest Research Institute