RECON: TNO occultation with 11HJ103

Event between 11HJ103 and star UC4-348-174235 with event index number of 202365

Geocentric closest approach at 2018/07/20 08:31:48 UTC

J2000 position of star is 19:12:30.7 -20:34:45
Equinox of date position of star is 19:13:34.4 -20:32:53
Stellar brightness R=16.4, use SENSEUP=128
Star is 73 degrees from the moon. Moon is 56% illuminated.
TNO apparent brightness V=25.3

[RECON map]
TNO is 40.0 AU from the Sun and 39.0 AU from the Earth.
The TNO is moving 23.8 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 460 seconds.
The 1-sigma cross-track error in the shadow position is 4309 km.
The sky-plane scale is 28307.0 km/arcsec.

The TNO has an absolute magnitude Hv=9.3
Diameter=82.0 km assuming a 5% albedo -- 3.4 sec chord
Diameter=33.5 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 11HJ103, (2018/07/20 08:32UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:32.9 -26:28:18  0.9 37.69  37
Nunki          18:56:24.8 -26:16:20  2.0  6.95  69
PPM 235581     19:10:53.7 -19:46:22  6.4  1.00  72
PPM 269477     19:14:15.0 -20:23:22  8.2  0.22  73
11HJ103        19:13:36.6 -20:32:49 16.4        73
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 2.0 sigma about the mid-time.
The median site spacing is 15.1 km RECON observability=0.9 and success probability=0.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 08:30:20 -20.2 Dark Down 18.6 197.9 Really Low 08:15:20 - 08:45:20 13545
Tonasket 08:30:19 -20.4 Dark Down 18.9 197.9 Really Low 08:15:19 - 08:45:19 13535
Okanogan 08:30:21 -20.8 Dark Down 19.2 197.8 Really Low 08:15:21 - 08:45:21 13522
Brewster 08:30:21 -21.0 Dark Down 19.5 197.6 Really Low 08:15:21 - 08:45:21 13514
Manson/Chelan 08:30:21 -21.3 Dark Down 19.8 197.3 Really Low 08:15:21 - 08:45:21 13511
Entiat 08:30:22 -21.5 Dark Down 20.0 197.2 Low 08:15:22 - 08:45:22 13502
Wenatchee 08:30:22 -21.8 Dark Down 20.3 197.2 Low 08:15:22 - 08:45:22 13493
Ellensburg 08:30:21 -22.2 Dark Down 20.7 197.0 Low 08:15:21 - 08:45:21 13477
Yakima 08:30:21 -22.6 Dark Down 21.1 197.0 Low 08:15:21 - 08:45:21 13459
Toppenish/White Swan 08:30:20 -22.8 Dark Down 21.3 197.2 Low 08:15:20 - 08:45:20 13445
Goldendale 08:30:22 -23.4 Dark Down 21.9 196.9 Low 08:15:22 - 08:45:22 13427
The Dalles 08:30:22 -23.6 Dark Down 22.2 196.5 Low 08:15:22 - 08:45:22 13423
Pasco 08:30:17 -22.8 Dark Down 21.1 198.5 Low 08:15:17 - 08:45:17 13415
George/Umatilla 08:30:18 -23.2 Dark Down 21.5 198.3 Low 08:15:18 - 08:45:18 13403
Maupin 08:30:23 -24.0 Dark Down 22.6 196.7 Low 08:15:23 - 08:45:23 13400
PNWRO 08:30:17 -23.0 Dark Down 21.3 198.7 Low 08:15:17 - 08:45:17 13399
Madras/Culver 08:30:22 -24.6 Dark Down 23.1 196.7 Low 08:15:22 - 08:45:22 13373
Sisters 08:30:23 -24.9 Dark Down 23.5 196.3 Low 08:15:23 - 08:45:23 13365
Redmond 08:30:22 -24.9 Dark Down 23.4 196.7 Low 08:15:22 - 08:45:22 13356
Bend 08:30:22 -25.2 Dark Down 23.7 196.6 Low 08:15:22 - 08:45:22 13348
Oregon Observatory 08:30:22 -25.3 Dark Down 23.9 196.5 Low 08:15:22 - 08:45:22 13342
La Pine/Gilchrist 08:30:23 -25.5 Dark Down 24.1 196.5 Low 08:15:23 - 08:45:23 13332
North Lake 08:30:22 -25.9 Dark Down 24.4 197.1 Low 08:15:22 - 08:45:22 13298
Chiloquin 08:30:23 -26.7 Dark Down 25.2 196.2 Low 08:15:23 - 08:45:23 13280
Paisley 08:30:19 -26.5 Dark Down 24.8 197.5 Low 08:15:19 - 08:45:19 13261
Klamath Falls 08:30:23 -27.0 Dark Down 25.5 196.4 Low 08:15:23 - 08:45:23 13260
Tulelake 08:30:21 -27.3 Dark Down 25.7 196.7 Low 08:15:21 - 08:45:21 13240
Lakeview 08:30:19 -27.0 Dark Down 25.3 197.8 Low 08:15:19 - 08:45:19 13230
Cedarville 08:30:18 -27.6 Dark Down 25.8 198.1 Low 08:15:18 - 08:45:18 13190
Fall River/Burney 08:30:20 -28.2 Dark Down 26.6 196.9 Low 08:15:20 - 08:45:20 13188
Susanville 08:30:18 -28.7 Dark Down 27.0 197.8 Low 08:15:18 - 08:45:18 13137
Greenville 08:30:19 -29.0 Dark Down 27.3 197.5 Low 08:15:19 - 08:45:19 13127
Gimple 08:30:19 -29.0 Dark Down 27.3 197.6 Low 08:15:19 - 08:45:19 13125
Quincy 08:30:19 -29.2 Dark Down 27.5 197.5 Low 08:15:19 - 08:45:19 13115
Portola 08:30:18 -29.3 Dark Down 27.5 198.0 Low 08:15:18 - 08:45:18 13098
Reno 08:30:15 -29.5 Dark Down 27.6 198.7 Low 08:15:15 - 08:45:15 13069
Carson City 08:30:15 -29.9 Dark Down 28.0 198.8 Low 08:15:15 - 08:45:15 13047
Gardnerville 08:30:14 -30.1 Dark Down 28.2 198.9 Low 08:15:14 - 08:45:14 13031
Yerington 08:30:13 -30.0 Dark Down 28.0 199.5 Low 08:15:13 - 08:45:13 13022
Hawthorne 08:30:11 -30.4 Dark Down 28.3 200.1 Low 08:15:11 - 08:45:11 12982
Lee Vining 08:30:13 -31.0 Dark Down 29.0 199.7 Low 08:15:13 - 08:45:13 12958
Tonopah 08:30:07 -30.7 Dark Down 28.3 201.6 Low 08:15:07 - 08:45:07 12922
Bishop 08:30:10 -31.6 Dark Down 29.3 200.6 Low 08:15:10 - 08:45:10 12905
Lone Pine 08:30:08 -32.3 Dark Down 29.9 201.1 Low 08:15:08 - 08:45:08 12849
Beatty 08:30:04 -31.8 Dark Down 29.3 202.3 Low 08:15:04 - 08:45:04 12839
CPSLO 08:30:16 -33.8 Dark Down 31.9 198.6 Up 08:15:16 - 08:45:16 12823
Indian Springs 08:29:59 -32.0 Dark Down 29.3 203.5 Low 08:14:59 - 08:44:59 12793
Niwot 08:29:32 -26.3 Dark Down 22.3 212.6 Low 08:14:32 - 08:44:32 12755
Henderson 08:29:57 -32.4 Dark Down 29.5 204.3 Low 08:14:57 - 08:44:57 12741
Searchlight/Boulder City 08:29:57 -32.9 Dark Down 30.0 204.5 Up 08:14:57 - 08:44:57 12702
Wildwood 08:30:09 -34.8 Dark Down 32.4 201.0 Up 08:15:09 - 08:45:09 12697
Laughlin/Bullhead City 08:29:56 -33.2 Dark Down 30.2 204.9 Up 08:14:56 - 08:44:56 12673
Patrick 08:29:54 -32.8 Dark Down 29.7 205.5 Low 08:14:54 - 08:44:54 12672
Kingman/Dolan Springs 08:29:54 -33.1 Dark Down 30.0 205.4 Low 08:14:54 - 08:44:54 12662
Mohave Valley 08:29:56 -33.4 Dark Down 30.4 205.0 Up 08:14:56 - 08:44:56 12655
DCO 08:29:51 -33.0 Dark Down 29.7 206.3 Low 08:14:51 - 08:44:51 12634
Idyllwild 08:30:02 -34.9 Dark Down 32.2 203.1 Up 08:15:02 - 08:45:02 12628
Lake Havasu City 08:29:55 -33.8 Dark Down 30.7 205.3 Up 08:14:55 - 08:44:55 12621
Parker 08:29:55 -34.1 Dark Down 31.0 205.4 Up 08:14:55 - 08:44:55 12597
Blythe 08:29:55 -34.7 Dark Down 31.6 205.3 Up 08:14:55 - 08:44:55 12568
Calipatria 08:29:57 -35.3 Dark Down 32.4 204.4 Up 08:14:57 - 08:44:57 12557
Yuma 08:29:55 -35.6 Dark Down 32.4 205.5 Up 08:14:55 - 08:44:55 12504

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 11HJ103, (2018/07/20 08:32UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 37.69  37
Nunki          18:55:15.9 -26:17:49  2.0  6.95  69
PPM 235581     19:09:48.2 -19:48:15  6.4  1.00  72
PPM 269477     19:13:09.2 -20:25:19  8.2  0.22  73
11HJ103        19:12:30.7 -20:34:45 16.4        73
Positions are for J2000

Event circumstances last updated at 2017/12/05 18:49:01 UT

Marc W. Buie, Southwest Research Institute

RECON