RECON: TNO occultation with 471172

Event between (471172) 10JC80 and star UC4-343-080251 with event index number of 145428

Geocentric closest approach at 2018/06/14 06:30:00 UTC

J2000 position of star is 16:05:32.1 -21:35:21
Equinox of date position of star is 16:06:31.1 -21:38:00
Stellar brightness R=15.5
Star is 154 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=21.0

[RECON map]
TNO is 32.3 AU from the Sun and 31.3 AU from the Earth.
The TNO is moving 21.5 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 147 seconds.
The 1-sigma cross-track error in the shadow position is 1639 km.
The sky-plane scale is 22734.4 km/arcsec.

The TNO has an absolute magnitude Hv=5.9
Diameter=398.1 km assuming a 5% albedo -- 18.5 sec chord
Diameter=162.5 km assuming a 30% albedo -- 7.5 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 471172, (2018/06/14 06:30UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:32.5 -26:28:17  0.9  7.29 159
7Del Sco       16:01:25.7 -22:40:22  2.3  1.59 153
9Ome1Sco       16:07:53.4 -20:43:04  4.1  0.97 154
PPM 265103     16:06:48.8 -21:53:16  8.2  0.25 154
PPM 265115     16:07:14.5 -21:37:31  9.5  0.14 154
471172         16:06:37.4 -21:38:17 15.5       154
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 10.8 km RECON observability=1.0 and success probability=11.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:30:51 -15.2 AT Down 19.5 179.4 Really Low 06:18:06 - 06:43:36 1472
Tonasket 06:30:51 -15.5 AT Down 19.7 179.4 Really Low 06:18:06 - 06:43:36 1463
Okanogan 06:30:52 -15.7 AT Down 20.0 179.3 Low 06:18:07 - 06:43:37 1449
Brewster 06:30:52 -15.9 AT Down 20.3 179.1 Low 06:18:07 - 06:43:37 1435
Manson/Chelan 06:30:54 -16.0 AT Down 20.5 178.7 Low 06:18:09 - 06:43:39 1423
Entiat 06:30:54 -16.2 AT Down 20.7 178.6 Low 06:18:09 - 06:43:39 1413
Wenatchee 06:30:54 -16.4 AT Down 21.0 178.5 Low 06:18:09 - 06:43:39 1401
Ellensburg 06:30:55 -16.8 AT Down 21.4 178.3 Low 06:18:10 - 06:43:40 1382
Pasco 06:30:50 -17.8 AT Down 22.2 179.7 Low 06:18:05 - 06:43:35 1371
Yakima 06:30:55 -17.1 AT Down 21.8 178.3 Low 06:18:10 - 06:43:40 1365
PNWRO 06:30:49 -18.1 Dark Down 22.4 179.9 Low 06:18:04 - 06:43:34 1364
Toppenish/White Swan 06:30:54 -17.4 AT Down 22.0 178.5 Low 06:18:09 - 06:43:39 1359
George/Umatilla 06:30:51 -18.1 Dark Down 22.5 179.5 Low 06:18:06 - 06:43:36 1354
Goldendale 06:30:56 -17.8 AT Down 22.6 178.0 Low 06:18:11 - 06:43:41 1329
The Dalles 06:30:57 -17.9 AT Down 22.8 177.7 Low 06:18:12 - 06:43:42 1314
Maupin 06:30:56 -18.3 Dark Down 23.2 177.8 Low 06:18:11 - 06:43:41 1298
Madras/Culver 06:30:56 -18.8 Dark Down 23.7 177.7 Low 06:18:11 - 06:43:41 1273
Redmond 06:30:56 -19.1 Dark Down 24.1 177.6 Low 06:18:11 - 06:43:41 1257
Sisters 06:30:58 -19.0 Dark Down 24.1 177.2 Low 06:18:13 - 06:43:43 1252
Niwot 06:29:54 -26.2 Dark Down 27.0 194.0 Low 06:17:09 - 06:42:39 1247
Bend 06:30:57 -19.3 Dark Down 24.3 177.5 Low 06:18:12 - 06:43:42 1245
Oregon Observatory 06:30:58 -19.4 Dark Down 24.5 177.4 Low 06:18:13 - 06:43:43 1235
La Pine/Gilchrist 06:30:58 -19.6 Dark Down 24.7 177.3 Low 06:18:13 - 06:43:43 1225
North Lake 06:30:55 -20.1 Dark Down 25.1 177.9 Low 06:18:10 - 06:43:40 1214
Paisley 06:30:54 -20.8 Dark Down 25.7 178.3 Low 06:18:09 - 06:43:39 1193
Lakeview 06:30:53 -21.3 Dark Down 26.2 178.4 Low 06:18:08 - 06:43:38 1172
Chiloquin 06:30:59 -20.5 Dark Down 25.8 176.9 Low 06:18:14 - 06:43:44 1166
Klamath Falls 06:30:59 -20.8 Dark Down 26.1 177.0 Low 06:18:14 - 06:43:44 1151
Tulelake 06:30:57 -21.2 Dark Down 26.4 177.3 Low 06:18:12 - 06:43:42 1143
Cedarville 06:30:52 -21.9 Dark Down 26.9 178.6 Low 06:18:07 - 06:43:37 1142
Fall River/Burney 06:30:56 -22.0 Dark Down 27.3 177.3 Low 06:18:11 - 06:43:41 1098
Susanville 06:30:54 -22.8 Dark Down 28.0 178.1 Low 06:18:09 - 06:43:39 1078
Greenville 06:30:55 -23.0 Dark Down 28.2 177.8 Low 06:18:10 - 06:43:40 1059
Portola 06:30:52 -23.4 Dark Down 28.6 178.3 Low 06:18:07 - 06:43:37 1050
Quincy 06:30:55 -23.2 Dark Down 28.4 177.8 Low 06:18:10 - 06:43:40 1048
Reno 06:30:50 -23.9 Dark Down 28.9 179.0 Low 06:18:05 - 06:43:35 1046
Carson City 06:30:50 -24.2 Dark Down 29.2 179.0 Low 06:18:05 - 06:43:35 1027
Yerington 06:30:47 -24.6 Dark Down 29.4 179.6 Low 06:18:02 - 06:43:32 1027
Gardnerville 06:30:49 -24.5 Dark Down 29.5 179.0 Low 06:18:04 - 06:43:34 1015
Hawthorne 06:30:45 -25.2 Dark Down 29.9 180.2 Low 06:18:00 - 06:43:30 1010
Tonopah 06:30:40 -26.0 Dark Down 30.3 181.7 Up 06:17:55 - 06:43:25 1006
Lee Vining 06:30:46 -25.5 Dark Down 30.4 179.7 Up 06:18:01 - 06:43:31 972
Bishop 06:30:44 -26.3 Dark Down 31.0 180.5 Up 06:17:59 - 06:43:29 949
Beatty 06:30:37 -27.2 Dark Down 31.5 182.2 Up 06:17:52 - 06:43:22 947
Indian Springs 06:30:33 -27.8 Dark Down 31.8 183.4 Up 06:17:48 - 06:43:18 944
Henderson 06:30:30 -28.5 Dark Down 32.3 184.1 Up 06:17:45 - 06:43:15 923
Lone Pine 06:30:42 -27.1 Dark Down 31.8 180.8 Up 06:17:57 - 06:43:27 911
Patrick 06:30:24 -29.3 Dark Down 32.8 185.4 Up 06:17:39 - 06:43:09 902
DCO 06:30:21 -29.8 Dark Down 33.1 186.2 Up 06:17:36 - 06:43:06 893
Searchlight/Boulder City 06:30:29 -29.0 Dark Down 32.8 184.2 Up 06:17:44 - 06:43:14 891
Kingman/Dolan Springs 06:30:25 -29.5 Dark Down 33.0 185.2 Up 06:17:40 - 06:43:10 886
Laughlin/Bullhead City 06:30:27 -29.4 Dark Down 33.1 184.6 Up 06:17:42 - 06:43:12 877
Mohave Valley 06:30:27 -29.6 Dark Down 33.4 184.6 Up 06:17:42 - 06:43:12 861
Lake Havasu City 06:30:26 -30.1 Dark Down 33.8 184.9 Up 06:17:41 - 06:43:11 841
Parker 06:30:25 -30.4 Dark Down 34.1 185.0 Up 06:17:40 - 06:43:10 820
CPSLO 06:30:52 -27.5 Dark Down 33.1 178.0 Up 06:18:07 - 06:43:37 792
Blythe 06:30:26 -30.9 Dark Down 34.7 184.7 Up 06:17:41 - 06:43:11 784
Idyllwild 06:30:35 -30.2 Dark Down 34.6 182.3 Up 06:17:50 - 06:43:20 761
Wildwood 06:30:43 -29.3 Dark Down 34.3 180.2 Up 06:17:58 - 06:43:28 753
Calipatria 06:30:30 -31.1 Dark Down 35.2 183.7 Up 06:17:45 - 06:43:15 740
Yuma 06:30:26 -31.7 Dark Down 35.6 184.7 Up 06:17:41 - 06:43:11 725

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 471172, (2018/06/14 06:30UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9  7.29 159
7Del Sco       16:00:20.0 -22:37:18  2.3  1.59 153
9Ome1Sco       16:06:48.4 -20:40:10  4.1  0.97 154
PPM 265103     16:05:43.4 -21:50:20  8.2  0.25 154
PPM 265115     16:06:09.2 -21:34:35  9.5  0.14 154
471172         16:05:32.1 -21:35:21 15.5       154
Positions are for J2000

Event circumstances last updated at 2016/09/01 18:28:05 UT

Marc W. Buie, Southwest Research Institute

RECON