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 16:06:35.5 -21:38:12
Stellar brightness R=15.5, use SENSEUP=128
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 296 seconds.
The 1-sigma cross-track error in the shadow position is 2750 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 3.0 sigma about the mid-time.
The median site spacing is 10.4 km RECON observability=1.0 and success probability=7.1%
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 06:15:51 - 06:45:51 1468
Tonasket 06:30:51 -15.5 AT Down 19.7 179.4 Really Low 06:15:51 - 06:45:51 1459
Okanogan 06:30:52 -15.7 AT Down 20.0 179.3 Low 06:15:52 - 06:45:52 1444
Brewster 06:30:53 -15.9 AT Down 20.3 179.1 Low 06:15:53 - 06:45:53 1431
Manson/Chelan 06:30:54 -16.0 AT Down 20.5 178.7 Low 06:15:54 - 06:45:54 1418
Entiat 06:30:54 -16.2 AT Down 20.7 178.6 Low 06:15:54 - 06:45:54 1409
Wenatchee 06:30:55 -16.4 AT Down 21.0 178.5 Low 06:15:55 - 06:45:55 1397
Ellensburg 06:30:55 -16.8 AT Down 21.4 178.3 Low 06:15:55 - 06:45:55 1377
Pasco 06:30:50 -17.8 AT Down 22.2 179.7 Low 06:15:50 - 06:45:50 1367
Yakima 06:30:55 -17.1 AT Down 21.8 178.3 Low 06:15:55 - 06:45:55 1361
PNWRO 06:30:49 -18.1 Dark Down 22.4 179.9 Low 06:15:49 - 06:45:49 1360
Toppenish/White Swan 06:30:55 -17.4 AT Down 22.0 178.5 Low 06:15:55 - 06:45:55 1354
George/Umatilla 06:30:51 -18.1 Dark Down 22.5 179.5 Low 06:15:51 - 06:45:51 1350
Goldendale 06:30:56 -17.8 AT Down 22.6 178.0 Low 06:15:56 - 06:45:56 1325
The Dalles 06:30:57 -17.9 AT Down 22.8 177.7 Low 06:15:57 - 06:45:57 1310
Maupin 06:30:57 -18.3 Dark Down 23.2 177.8 Low 06:15:57 - 06:45:57 1293
Madras/Culver 06:30:57 -18.8 Dark Down 23.7 177.7 Low 06:15:57 - 06:45:57 1268
Redmond 06:30:57 -19.1 Dark Down 24.1 177.6 Low 06:15:57 - 06:45:57 1252
Sisters 06:30:58 -19.0 Dark Down 24.1 177.2 Low 06:15:58 - 06:45:58 1246
Niwot 06:29:54 -26.2 Dark Down 27.0 194.0 Low 06:14:54 - 06:44:54 1243
Bend 06:30:57 -19.3 Dark Down 24.3 177.5 Low 06:15:57 - 06:45:57 1240
Oregon Observatory 06:30:58 -19.4 Dark Down 24.5 177.4 Low 06:15:58 - 06:45:58 1230
La Pine/Gilchrist 06:30:58 -19.6 Dark Down 24.7 177.3 Low 06:15:58 - 06:45:58 1219
North Lake 06:30:55 -20.1 Dark Down 25.1 177.9 Low 06:15:55 - 06:45:55 1208
Paisley 06:30:54 -20.8 Dark Down 25.7 178.3 Low 06:15:54 - 06:45:54 1188
Lakeview 06:30:53 -21.3 Dark Down 26.2 178.4 Low 06:15:53 - 06:45:53 1166
Chiloquin 06:30:59 -20.5 Dark Down 25.8 176.9 Low 06:15:59 - 06:45:59 1161
Klamath Falls 06:30:59 -20.8 Dark Down 26.1 177.0 Low 06:15:59 - 06:45:59 1145
Tulelake 06:30:58 -21.2 Dark Down 26.4 177.3 Low 06:15:58 - 06:45:58 1137
Cedarville 06:30:52 -21.9 Dark Down 26.9 178.6 Low 06:15:52 - 06:45:52 1137
Fall River/Burney 06:30:57 -22.0 Dark Down 27.3 177.4 Low 06:15:57 - 06:45:57 1093
Susanville 06:30:54 -22.8 Dark Down 28.0 178.1 Low 06:15:54 - 06:45:54 1073
Gimple 06:30:55 -23.0 Dark Down 28.2 177.9 Low 06:15:55 - 06:45:55 1055
Greenville 06:30:55 -23.0 Dark Down 28.2 177.8 Low 06:15:55 - 06:45:55 1053
Portola 06:30:53 -23.4 Dark Down 28.6 178.3 Low 06:15:53 - 06:45:53 1044
Quincy 06:30:55 -23.2 Dark Down 28.4 177.8 Low 06:15:55 - 06:45:55 1043
Reno 06:30:51 -23.9 Dark Down 28.9 179.0 Low 06:15:51 - 06:45:51 1040
Carson City 06:30:50 -24.2 Dark Down 29.2 179.0 Low 06:15:50 - 06:45:50 1022
Yerington 06:30:48 -24.6 Dark Down 29.4 179.6 Low 06:15:48 - 06:45:48 1021
Gardnerville 06:30:50 -24.5 Dark Down 29.5 179.0 Low 06:15:50 - 06:45:50 1009
Hawthorne 06:30:45 -25.2 Dark Down 29.9 180.2 Low 06:15:45 - 06:45:45 1004
Tonopah 06:30:40 -26.0 Dark Down 30.3 181.7 Up 06:15:40 - 06:45:40 1000
Lee Vining 06:30:47 -25.5 Dark Down 30.4 179.7 Up 06:15:47 - 06:45:47 966
Bishop 06:30:44 -26.3 Dark Down 31.0 180.5 Up 06:15:44 - 06:45:44 944
Beatty 06:30:37 -27.2 Dark Down 31.5 182.2 Up 06:15:37 - 06:45:37 942
Indian Springs 06:30:33 -27.8 Dark Down 31.8 183.4 Up 06:15:33 - 06:45:33 939
Henderson 06:30:30 -28.5 Dark Down 32.3 184.1 Up 06:15:30 - 06:45:30 918
Lone Pine 06:30:42 -27.1 Dark Down 31.8 180.8 Up 06:15:42 - 06:45:42 906
Patrick 06:30:24 -29.3 Dark Down 32.8 185.4 Up 06:15:24 - 06:45:24 897
DCO 06:30:21 -29.8 Dark Down 33.1 186.2 Up 06:15:21 - 06:45:21 889
Searchlight/Boulder City 06:30:29 -29.0 Dark Down 32.8 184.2 Up 06:15:29 - 06:45:29 886
Kingman/Dolan Springs 06:30:25 -29.5 Dark Down 33.0 185.2 Up 06:15:25 - 06:45:25 882
Laughlin/Bullhead City 06:30:27 -29.4 Dark Down 33.1 184.6 Up 06:15:27 - 06:45:27 873
Mohave Valley 06:30:27 -29.6 Dark Down 33.4 184.6 Up 06:15:27 - 06:45:27 857
Lake Havasu City 06:30:26 -30.1 Dark Down 33.8 184.9 Up 06:15:26 - 06:45:26 837
Parker 06:30:26 -30.4 Dark Down 34.1 185.0 Up 06:15:26 - 06:45:26 816
CPSLO 06:30:52 -27.5 Dark Down 33.1 178.0 Up 06:15:52 - 06:45:52 787
Blythe 06:30:26 -30.9 Dark Down 34.7 184.7 Up 06:15:26 - 06:45:26 780
Idyllwild 06:30:35 -30.2 Dark Down 34.6 182.3 Up 06:15:35 - 06:45:35 756
Wildwood 06:30:43 -29.3 Dark Down 34.3 180.2 Up 06:15:43 - 06:45:43 748
Calipatria 06:30:30 -31.1 Dark Down 35.2 183.7 Up 06:15:30 - 06:45:30 736
Yuma 06:30:26 -31.7 Dark Down 35.6 184.7 Up 06:15:26 - 06:45:26 721

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 -26:25:56  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 2017/12/04 18:44:37 UT

Marc W. Buie, Southwest Research Institute

RECON