Event between (55636) 02TX300 and star UC4-629-004370 with event index number of 156122
Geocentric closest approach at 2018/10/11 11:51:40 UTC
J2000 position of star is 01:23:30.3 +35:37:10
Equinox of date position of star is 01:24:33.2 +35:42:54
Stellar brightness R=15.8,
use SENSEUP=128
Star is 147 degrees from the moon.
Moon is 7% illuminated.
TNO apparent brightness V=19.7
[RECON map]
TNO is 42.6 AU from the Sun
and 41.7 AU from the Earth.
The TNO is moving 24.7
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 81 seconds.
The 1-sigma cross-track error in the shadow position is
1830 km.
The sky-plane scale is
30252.0 km/arcsec.
The TNO has an absolute magnitude Hv=3.4
Diameter=1259.0 km assuming a 5% albedo -- 50.9 sec chord
Diameter=514.0 km assuming a 30% albedo -- 20.8 sec chord
Dynamical classification is SCATEXTD
Star training set for 55636, (2018/10/11 11:52UT) Object RA Dec mag sep mel Aldebaran 04:37:00.0 +16:32:44 0.8 46.69 158 57Gam1And 02:05:03.6 +42:25:08 2.3 10.31 147 PPM 066368 01:33:12.2 +34:53:46 6.4 1.94 149 PPM 066278 01:26:47.8 +36:27:15 7.9 0.86 147 PPM 066266 01:26:12.6 +35:49:50 8.6 0.35 147 PPM 066250 01:25:33.1 +35:29:16 10.5 0.30 147 55636 01:24:34.5 +35:43:01 15.8 147 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 22.9 km
RECON observability=1.0 and success probability=0.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 11:48:55 | -24.1 | Dark | Down | 46.9 | 274.0 | Up | 11:41:40 - 11:56:09 | 10370 |
| Tonasket | 11:48:54 | -24.2 | Dark | Down | 46.9 | 274.3 | Up | 11:41:39 - 11:56:08 | 10347 |
| Okanogan | 11:48:54 | -24.4 | Dark | Down | 47.0 | 274.6 | Up | 11:41:40 - 11:56:09 | 10309 |
| Brewster | 11:48:54 | -24.6 | Dark | Down | 47.1 | 274.7 | Up | 11:41:39 - 11:56:08 | 10276 |
| Manson/Chelan | 11:48:54 | -24.9 | Dark | Down | 47.3 | 274.7 | Up | 11:41:39 - 11:56:08 | 10246 |
| Entiat | 11:48:54 | -25.0 | Dark | Down | 47.4 | 274.9 | Up | 11:41:39 - 11:56:08 | 10222 |
| Wenatchee | 11:48:53 | -25.1 | Dark | Down | 47.4 | 275.1 | Up | 11:41:39 - 11:56:08 | 10193 |
| Ellensburg | 11:48:53 | -25.4 | Dark | Down | 47.5 | 275.4 | Up | 11:41:39 - 11:56:08 | 10145 |
| Pasco | 11:48:49 | -24.7 | Dark | Down | 46.5 | 277.1 | Up | 11:41:35 - 11:56:04 | 10104 |
| Yakima | 11:48:53 | -25.5 | Dark | Down | 47.5 | 275.8 | Up | 11:41:38 - 11:56:07 | 10103 |
| Toppenish/White Swan | 11:48:52 | -25.5 | Dark | Down | 47.3 | 276.1 | Up | 11:41:38 - 11:56:07 | 10085 |
| PNWRO | 11:48:48 | -24.6 | Dark | Down | 46.3 | 277.5 | Up | 11:41:34 - 11:56:03 | 10084 |
| George/Umatilla | 11:48:50 | -24.9 | Dark | Down | 46.6 | 277.3 | Up | 11:41:35 - 11:56:04 | 10064 |
| Goldendale | 11:48:52 | -25.9 | Dark | Down | 47.6 | 276.5 | Up | 11:41:38 - 11:56:07 | 10017 |
| The Dalles | 11:48:52 | -26.3 | Dark | Down | 47.8 | 276.5 | Up | 11:41:38 - 11:56:07 | 9985 |
| Maupin | 11:48:51 | -26.3 | Dark | Down | 47.7 | 277.0 | Up | 11:41:37 - 11:56:06 | 9944 |
| Niwot | 11:48:12 | -15.9 | AT | Down | 35.3 | 289.7 | Up | 11:40:57 - 11:55:26 | 9926 |
| Madras/Culver | 11:48:52 | -26.5 | Dark | Down | 47.6 | 277.6 | Up | 11:41:37 - 11:56:06 | 9886 |
| Redmond | 11:48:50 | -26.6 | Dark | Down | 47.6 | 277.9 | Up | 11:41:36 - 11:56:05 | 9848 |
| Sisters | 11:48:51 | -26.9 | Dark | Down | 47.9 | 277.7 | Up | 11:41:37 - 11:56:06 | 9840 |
| Bend | 11:48:51 | -26.8 | Dark | Down | 47.7 | 278.1 | Up | 11:41:36 - 11:56:05 | 9822 |
| Oregon Observatory | 11:48:50 | -26.9 | Dark | Down | 47.8 | 278.2 | Up | 11:41:36 - 11:56:05 | 9801 |
| La Pine/Gilchrist | 11:48:50 | -27.1 | Dark | Down | 47.8 | 278.4 | Up | 11:41:36 - 11:56:05 | 9778 |
| North Lake | 11:48:48 | -26.8 | Dark | Down | 47.3 | 279.2 | Up | 11:41:34 - 11:56:03 | 9747 |
| Paisley | 11:48:47 | -26.7 | Dark | Down | 46.9 | 280.0 | Up | 11:41:32 - 11:56:01 | 9699 |
| Chiloquin | 11:48:49 | -27.6 | Dark | Down | 47.9 | 279.4 | Up | 11:41:35 - 11:56:04 | 9652 |
| Lakeview | 11:48:46 | -26.7 | Dark | Down | 46.7 | 280.6 | Up | 11:41:32 - 11:56:01 | 9651 |
| Klamath Falls | 11:48:49 | -27.7 | Dark | Down | 47.8 | 279.8 | Up | 11:41:34 - 11:56:03 | 9618 |
| Tulelake | 11:48:48 | -27.5 | Dark | Down | 47.5 | 280.3 | Up | 11:41:33 - 11:56:02 | 9598 |
| Cedarville | 11:48:44 | -26.7 | Dark | Down | 46.5 | 281.4 | Up | 11:41:30 - 11:55:59 | 9587 |
| Fall River/Burney | 11:48:46 | -27.7 | Dark | Down | 47.3 | 281.3 | Up | 11:41:32 - 11:56:01 | 9504 |
| Susanville | 11:48:44 | -27.4 | Dark | Down | 46.6 | 282.3 | Up | 11:41:29 - 11:55:58 | 9457 |
| Gimple | 11:48:44 | -27.6 | Dark | Down | 46.7 | 282.5 | Up | 11:41:29 - 11:55:58 | 9423 |
| Greenville | 11:48:44 | -27.7 | Dark | Down | 46.8 | 282.4 | Up | 11:41:30 - 11:55:59 | 9421 |
| Quincy | 11:48:44 | -27.7 | Dark | Down | 46.7 | 282.6 | Up | 11:41:29 - 11:55:58 | 9399 |
| Portola | 11:48:42 | -27.4 | Dark | Down | 46.3 | 283.0 | Up | 11:41:27 - 11:55:56 | 9399 |
| Reno | 11:48:41 | -27.0 | Dark | Down | 45.8 | 283.6 | Up | 11:41:26 - 11:55:55 | 9389 |
| Carson City | 11:48:40 | -27.0 | Dark | Down | 45.7 | 283.9 | Up | 11:41:26 - 11:55:55 | 9352 |
| Yerington | 11:48:38 | -26.6 | Dark | Down | 45.2 | 284.4 | Up | 11:41:24 - 11:55:53 | 9349 |
| Gardnerville | 11:48:39 | -27.1 | Dark | Down | 45.6 | 284.2 | Up | 11:41:25 - 11:55:54 | 9327 |
| Hawthorne | 11:48:36 | -26.3 | Dark | Down | 44.7 | 285.1 | Up | 11:41:22 - 11:55:51 | 9316 |
| Tonopah | 11:48:33 | -25.3 | Dark | Down | 43.5 | 286.1 | Up | 11:41:18 - 11:55:47 | 9308 |
| Lee Vining | 11:48:37 | -26.8 | Dark | Down | 44.9 | 285.4 | Up | 11:41:23 - 11:55:52 | 9242 |
| Indian Springs | 11:48:27 | -24.4 | Dark | Down | 41.9 | 288.0 | Up | 11:41:13 - 11:55:42 | 9202 |
| Beatty | 11:48:30 | -25.2 | Dark | Down | 42.8 | 287.3 | Up | 11:41:16 - 11:55:45 | 9202 |
| Bishop | 11:48:34 | -26.4 | Dark | Down | 44.2 | 286.2 | Up | 11:41:20 - 11:55:49 | 9201 |
| Henderson | 11:48:25 | -24.0 | Dark | Down | 41.2 | 288.7 | Up | 11:41:10 - 11:55:39 | 9169 |
| Patrick | 11:48:22 | -23.2 | Dark | Down | 40.1 | 289.6 | Up | 11:41:07 - 11:55:36 | 9142 |
| DCO | 11:48:20 | -22.6 | Dark | Down | 39.5 | 290.1 | Up | 11:41:05 - 11:55:34 | 9134 |
| Lone Pine | 11:48:33 | -26.3 | Dark | Down | 43.7 | 287.1 | Up | 11:41:18 - 11:55:47 | 9131 |
| Kingman/Dolan Springs | 11:48:22 | -23.4 | Dark | Down | 40.2 | 289.7 | Up | 11:41:07 - 11:55:36 | 9112 |
| Searchlight/Boulder City | 11:48:24 | -24.0 | Dark | Down | 41.0 | 289.2 | Up | 11:41:10 - 11:55:39 | 9112 |
| Laughlin/Bullhead City | 11:48:23 | -23.8 | Dark | Down | 40.6 | 289.5 | Up | 11:41:09 - 11:55:38 | 9093 |
| Mohave Valley | 11:48:22 | -23.8 | Dark | Down | 40.5 | 289.8 | Up | 11:41:08 - 11:55:37 | 9065 |
| Lake Havasu City | 11:48:22 | -23.7 | Dark | Down | 40.2 | 290.2 | Up | 11:41:07 - 11:55:36 | 9032 |
| Parker | 11:48:21 | -23.7 | Dark | Down | 40.0 | 290.4 | Up | 11:41:06 - 11:55:35 | 8997 |
| Blythe | 11:48:22 | -24.0 | Dark | Down | 40.1 | 290.8 | Up | 11:41:07 - 11:55:36 | 8932 |
| CPSLO | 11:48:38 | -28.6 | Dark | Down | 45.3 | 287.4 | Up | 11:41:23 - 11:55:52 | 8919 |
| Idyllwild | 11:48:27 | -25.7 | Dark | Down | 41.8 | 290.0 | Up | 11:41:12 - 11:55:41 | 8874 |
| Wildwood | 11:48:31 | -27.2 | Dark | Down | 43.3 | 289.2 | Up | 11:41:17 - 11:55:46 | 8853 |
| Calipatria | 11:48:22 | -24.9 | Dark | Down | 40.6 | 290.9 | Up | 11:41:08 - 11:55:37 | 8850 |
| Yuma | 11:48:21 | -24.2 | Dark | Down | 39.8 | 291.5 | Up | 11:41:06 - 11:55:35 | 8835 |
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 55636, (2018/10/11 11:52UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 46.69 158 57Gam1And 02:03:54.0 +42:19:46 2.3 10.31 147 PPM 066368 01:32:07.6 +34:48:00 6.4 1.94 149 PPM 066278 01:25:43.2 +36:21:25 7.9 0.86 147 PPM 066266 01:25:08.3 +35:43:59 8.6 0.35 147 PPM 066250 01:24:28.9 +35:23:26 10.5 0.30 147 55636 01:23:30.3 +35:37:10 15.8 147 Positions are for J2000
Event circumstances last updated at 2018/05/24 01:52:34 UT
Marc W. Buie, Southwest Research Institute