Event between (353222) 09YD7 and star UC4-558-047101 with event index number of 114643
Geocentric closest approach at 2018/04/03 08:10:27 UTC
J2000 position of star is 08:47:01.1 +21:33:46
Equinox of date position of star is 08:48:03.8 +21:29:44
Stellar brightness R=14.7,
use SENSEUP=128
Star is 99 degrees from the moon.
Moon is 91% illuminated.
TNO apparent brightness V=21.9
[RECON map]
TNO is 15.0 AU from the Sun
and 14.6 AU from the Earth.
The TNO is moving 5.5
km/sec on the sky relative to the star, or,
1.9 arcsec/hr.
The 1-sigma error in the time of the event is 292 seconds.
The 1-sigma cross-track error in the shadow position is
1402 km.
The sky-plane scale is
10569.7 km/arcsec.
The TNO has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 11.4 sec chord
Diameter=25.8 km assuming a 30% albedo -- 4.6 sec chord
Dynamical classification is CENTAURR
Star training set for 353222, (2018/04/03 08:10UT) Object RA Dec mag sep mel Pollux 07:46:25.8 +27:58:50 1.1 15.41 114 43Gam Cnc 08:44:20.4 +21:24:06 4.7 0.87 100 PPM 099029 08:47:32.4 +22:17:04 8.5 0.80 100 PPM 099039 08:48:17.8 +21:28:30 9.4 0.06 99 353222 08:48:04.4 +21:29:42 14.7 99 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
3.1 sigma about the mid-time.
The median site spacing is 2.9 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) |
| Niwot | 08:09:40 | -42.1 | Dark | Up | 23.3 | 279.2 | Low | 07:54:40 - 08:24:40 | 8655 |
| DCO | 08:07:40 | -48.9 | Dark | Up | 29.3 | 277.0 | Low | 07:52:40 - 08:22:40 | 8322 |
| Patrick | 08:07:41 | -48.7 | Dark | Up | 29.9 | 276.4 | Low | 07:52:41 - 08:22:41 | 8292 |
| Kingman/Dolan Springs | 08:07:36 | -48.9 | Dark | Up | 30.0 | 276.4 | Up | 07:52:36 - 08:22:36 | 8281 |
| Lake Havasu City | 08:07:22 | -49.7 | Dark | Up | 30.2 | 276.7 | Up | 07:52:22 - 08:22:22 | 8261 |
| Parker | 08:07:16 | -50.0 | Dark | Up | 30.1 | 276.9 | Up | 07:52:16 - 08:22:16 | 8258 |
| Laughlin/Bullhead City | 08:07:36 | -49.0 | Dark | Up | 30.4 | 276.2 | Up | 07:52:36 - 08:22:36 | 8256 |
| Mohave Valley | 08:07:28 | -49.3 | Dark | Up | 30.4 | 276.3 | Up | 07:52:28 - 08:22:28 | 8254 |
| Henderson | 08:07:54 | -48.2 | Dark | Up | 30.8 | 275.5 | Up | 07:52:54 - 08:22:54 | 8246 |
| Searchlight/Boulder City | 08:07:42 | -48.8 | Dark | Up | 30.7 | 275.8 | Up | 07:52:42 - 08:22:42 | 8243 |
| Blythe | 08:07:05 | -50.6 | Dark | Up | 30.4 | 277.0 | Up | 07:52:05 - 08:22:05 | 8237 |
| Yuma | 08:06:46 | -51.5 | Dark | Up | 30.4 | 277.5 | Up | 07:51:46 - 08:21:46 | 8221 |
| Indian Springs | 08:08:05 | -47.8 | Dark | Up | 31.4 | 274.8 | Up | 07:53:05 - 08:23:05 | 8219 |
| Calipatria | 08:06:52 | -51.2 | Dark | Up | 31.1 | 276.8 | Up | 07:51:52 - 08:21:52 | 8184 |
| Beatty | 08:08:11 | -47.6 | Dark | Up | 32.2 | 274.0 | Up | 07:53:11 - 08:23:11 | 8170 |
| Tonopah | 08:08:30 | -46.4 | Dark | Up | 32.6 | 273.1 | Up | 07:53:30 - 08:23:30 | 8158 |
| Idyllwild | 08:07:05 | -50.7 | Dark | Up | 32.1 | 275.9 | Up | 07:52:05 - 08:22:05 | 8134 |
| Lone Pine | 08:08:02 | -48.0 | Dark | Up | 33.3 | 273.4 | Up | 07:53:02 - 08:23:02 | 8104 |
| Bishop | 08:08:19 | -47.2 | Dark | Up | 33.5 | 272.8 | Up | 07:53:19 - 08:23:19 | 8095 |
| PNWRO | 08:11:18 | -38.6 | Dark | Up | 33.3 | 267.2 | Up | 07:56:18 - 08:26:18 | 8094 |
| Hawthorne | 08:08:43 | -46.1 | Dark | Up | 33.7 | 271.9 | Up | 07:53:43 - 08:23:43 | 8094 |
| Pasco | 08:11:20 | -38.3 | Dark | Up | 33.5 | 266.9 | Up | 07:56:20 - 08:26:20 | 8083 |
| George/Umatilla | 08:11:14 | -38.7 | Dark | Up | 33.7 | 267.0 | Up | 07:56:14 - 08:26:14 | 8075 |
| Yerington | 08:08:49 | -45.6 | Dark | Up | 34.1 | 271.3 | Up | 07:53:49 - 08:23:49 | 8072 |
| Lee Vining | 08:08:29 | -46.7 | Dark | Up | 34.1 | 272.0 | Up | 07:53:29 - 08:23:29 | 8065 |
| Tonasket | 08:12:15 | -35.9 | Dark | Up | 33.4 | 265.2 | Up | 07:57:15 - 08:27:15 | 8053 |
| Oroville | 08:12:19 | -35.7 | Dark | Up | 33.3 | 265.1 | Up | 07:57:19 - 08:27:19 | 8051 |
| Okanogan | 08:12:03 | -36.3 | Dark | Up | 33.5 | 265.3 | Up | 07:57:03 - 08:27:03 | 8050 |
| Reno | 08:08:58 | -45.1 | Dark | Up | 34.6 | 270.6 | Up | 07:53:58 - 08:23:58 | 8044 |
| Brewster | 08:12:01 | -36.5 | Dark | Up | 33.7 | 265.3 | Up | 07:57:01 - 08:27:01 | 8043 |
| Wildwood | 08:07:06 | -50.5 | Dark | Up | 33.7 | 274.7 | Up | 07:52:06 - 08:22:06 | 8043 |
| Gardnerville | 08:08:47 | -45.7 | Dark | Up | 34.6 | 271.0 | Up | 07:53:47 - 08:23:47 | 8043 |
| Carson City | 08:08:57 | -45.5 | Dark | Up | 34.6 | 270.8 | Up | 07:53:57 - 08:23:57 | 8042 |
| Cedarville | 08:09:45 | -43.1 | Dark | Up | 34.7 | 269.1 | Up | 07:54:45 - 08:24:45 | 8038 |
| Lakeview | 08:09:57 | -42.5 | Dark | Up | 34.8 | 268.5 | Up | 07:54:57 - 08:24:57 | 8032 |
| Manson/Chelan | 08:12:01 | -36.8 | Dark | Up | 34.0 | 265.2 | Up | 07:57:01 - 08:27:01 | 8029 |
| Entiat | 08:11:50 | -37.0 | Dark | Up | 34.1 | 265.2 | Up | 07:56:50 - 08:26:50 | 8028 |
| Toppenish/White Swan | 08:11:22 | -38.3 | Dark | Up | 34.3 | 265.9 | Up | 07:56:22 - 08:26:22 | 8028 |
| Wenatchee | 08:11:43 | -37.2 | Dark | Up | 34.2 | 265.3 | Up | 07:56:43 - 08:26:43 | 8025 |
| Paisley | 08:10:04 | -42.0 | Dark | Up | 34.9 | 268.1 | Up | 07:55:04 - 08:25:04 | 8024 |
| Yakima | 08:11:28 | -38.1 | Dark | Up | 34.4 | 265.6 | Up | 07:56:28 - 08:26:28 | 8019 |
| Ellensburg | 08:11:35 | -37.7 | Dark | Up | 34.4 | 265.4 | Up | 07:56:35 - 08:26:35 | 8018 |
| Portola | 08:09:09 | -44.8 | Dark | Up | 35.0 | 270.0 | Up | 07:54:09 - 08:24:09 | 8014 |
| Goldendale | 08:11:13 | -38.8 | Dark | Up | 34.7 | 265.9 | Up | 07:56:13 - 08:26:13 | 8011 |
| Susanville | 08:09:17 | -44.2 | Dark | Up | 35.2 | 269.5 | Up | 07:54:17 - 08:24:17 | 8009 |
| North Lake | 08:10:21 | -41.4 | Dark | Up | 35.1 | 267.5 | Up | 07:55:21 - 08:25:21 | 8008 |
| Maupin | 08:11:00 | -39.5 | Dark | Up | 35.0 | 266.1 | Up | 07:56:00 - 08:26:00 | 8000 |
| Madras/Culver | 08:10:44 | -40.0 | Dark | Up | 35.1 | 266.4 | Up | 07:55:44 - 08:25:44 | 7999 |
| Redmond | 08:10:40 | -40.4 | Dark | Up | 35.2 | 266.6 | Up | 07:55:40 - 08:25:40 | 7997 |
| Gimple | 08:09:15 | -44.5 | Dark | Up | 35.3 | 269.5 | Up | 07:54:15 - 08:24:15 | 7996 |
| The Dalles | 08:11:10 | -39.1 | Dark | Up | 35.0 | 265.8 | Up | 07:56:10 - 08:26:10 | 7995 |
| Greenville | 08:09:10 | -44.5 | Dark | Up | 35.4 | 269.4 | Up | 07:54:10 - 08:24:10 | 7992 |
| Quincy | 08:09:12 | -44.7 | Dark | Up | 35.4 | 269.6 | Up | 07:54:12 - 08:24:12 | 7991 |
| Bend | 08:10:30 | -40.6 | Dark | Up | 35.3 | 266.6 | Up | 07:55:30 - 08:25:30 | 7990 |
| Oregon Observatory | 08:10:33 | -40.8 | Dark | Up | 35.4 | 266.7 | Up | 07:55:33 - 08:25:33 | 7984 |
| La Pine/Gilchrist | 08:10:30 | -41.0 | Dark | Up | 35.5 | 266.8 | Up | 07:55:30 - 08:25:30 | 7981 |
| Sisters | 08:10:40 | -40.4 | Dark | Up | 35.4 | 266.3 | Up | 07:55:40 - 08:25:40 | 7978 |
| Tulelake | 08:09:50 | -42.7 | Dark | Up | 35.6 | 267.9 | Up | 07:54:50 - 08:24:50 | 7977 |
| Fall River/Burney | 08:09:37 | -43.6 | Dark | Up | 35.7 | 268.6 | Up | 07:54:37 - 08:24:37 | 7976 |
| Klamath Falls | 08:09:54 | -42.4 | Dark | Up | 35.8 | 267.5 | Up | 07:54:54 - 08:24:54 | 7963 |
| Chiloquin | 08:10:01 | -42.1 | Dark | Up | 35.9 | 267.2 | Up | 07:55:01 - 08:25:01 | 7961 |
| CPSLO | 08:07:29 | -49.4 | Dark | Up | 35.4 | 272.8 | Up | 07:52:29 - 08:22:29 | 7954 |
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 353222, (2018/04/03 08:10UT) Object RA Dec mag sep mel Pollux 07:45:18.1 +28:01:33 1.1 15.41 114 43Gam Cnc 08:43:17.0 +21:28:06 4.7 0.87 100 PPM 099029 08:46:28.8 +22:21:08 8.5 0.80 100 PPM 099039 08:47:14.6 +21:32:34 9.4 0.06 99 353222 08:47:01.1 +21:33:46 14.7 99 Positions are for J2000
Event circumstances last updated at 2018/02/06 17:39:16 UT
Marc W. Buie, Southwest Research Institute