RECON: TNO occultation with 134340

Event between (134340) Pluto and star UC4-341-187633 with event index number of 148325

Geocentric closest approach at 2018/08/15 05:33:38 UTC

J2000 position of star is 19:22:10.5 -21:58:49
Equinox of date position of star is 19:23:13.4 -21:56:45
Stellar brightness R=13.0, use SENSEUP=32
Star is 95 degrees from the moon. Moon is 19% illuminated.
TNO apparent brightness V=14.5

[RECON map]
TNO is 33.6 AU from the Sun and 32.8 AU from the Earth.
The TNO is moving 19.3 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 63 seconds.
The 1-sigma cross-track error in the shadow position is 1189 km.
The sky-plane scale is 23766.3 km/arcsec.

The TNO has an absolute magnitude Hv=-0.8
Diameter=8551.0 km assuming a 5% albedo -- 442.2 sec chord
Diameter=3490.9 km assuming a 30% albedo -- 180.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 134340, (2018/08/15 05:34UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:33.1 -26:28:18  0.9 39.47  56
Nunki          18:56:25.1 -26:16:19  2.0  7.50  88
PPM 269651     19:21:45.0 -22:21:59  5.8  0.55  94
PPM 269691     19:23:22.3 -22:02:14  8.4  0.10  95
PPM 269692     19:23:22.4 -21:53:08  9.7  0.06  95
134340         19:23:17.1 -21:56:37 13.0        95
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 11.0 km RECON observability=0.9 and success probability=6.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 05:32:41 -18.9 Dark Down 19.0 176.8 Really Low 05:26:58 - 05:38:24 3046
Tonasket 05:32:41 -19.0 Dark Down 19.3 176.8 Really Low 05:26:58 - 05:38:24 3038
Okanogan 05:32:42 -19.2 Dark Down 19.6 176.7 Really Low 05:26:59 - 05:38:25 3028
Brewster 05:32:43 -19.4 Dark Down 19.9 176.5 Really Low 05:27:00 - 05:38:26 3021
Manson/Chelan 05:32:44 -19.4 Dark Down 20.0 176.1 Low 05:27:01 - 05:38:27 3019
Entiat 05:32:45 -19.5 Dark Down 20.3 176.0 Low 05:27:02 - 05:38:28 3012
Wenatchee 05:32:46 -19.7 Dark Down 20.5 175.9 Low 05:27:03 - 05:38:29 3004
Ellensburg 05:32:46 -19.9 Dark Down 20.9 175.7 Low 05:27:03 - 05:38:29 2992
Yakima 05:32:47 -20.2 Dark Down 21.3 175.7 Low 05:27:04 - 05:38:30 2977
Toppenish/White Swan 05:32:46 -20.4 Dark Down 21.5 175.8 Low 05:27:03 - 05:38:29 2966
Goldendale 05:32:48 -20.7 Dark Down 22.1 175.4 Low 05:27:05 - 05:38:31 2951
The Dalles 05:32:50 -20.7 Dark Down 22.3 175.0 Low 05:27:07 - 05:38:33 2947
Pasco 05:32:41 -21.1 Dark Down 21.7 177.1 Low 05:26:58 - 05:38:24 2942
George/Umatilla 05:32:43 -21.2 Dark Down 22.0 176.9 Low 05:27:00 - 05:38:26 2932
Maupin 05:32:50 -21.0 Dark Down 22.7 175.1 Low 05:27:07 - 05:38:33 2929
PNWRO 05:32:41 -21.4 Dark Down 22.0 177.3 Low 05:26:58 - 05:38:24 2929
Madras/Culver 05:32:51 -21.4 Dark Down 23.2 175.1 Low 05:27:08 - 05:38:34 2907
Sisters 05:32:52 -21.5 Dark Down 23.5 174.6 Low 05:27:09 - 05:38:35 2900
Redmond 05:32:50 -21.7 Dark Down 23.6 175.0 Low 05:27:07 - 05:38:33 2893
Bend 05:32:52 -21.8 Dark Down 23.8 174.9 Low 05:27:09 - 05:38:35 2886
Oregon Observatory 05:32:53 -21.9 Dark Down 24.0 174.7 Low 05:27:10 - 05:38:36 2881
La Pine/Gilchrist 05:32:53 -22.0 Dark Down 24.2 174.7 Low 05:27:10 - 05:38:36 2873
North Lake 05:32:51 -22.6 Dark Down 24.6 175.3 Low 05:27:08 - 05:38:34 2845
Chiloquin 05:32:56 -22.6 Dark Down 25.2 174.3 Low 05:27:13 - 05:38:39 2829
Paisley 05:32:50 -23.2 Dark Down 25.2 175.6 Low 05:27:07 - 05:38:33 2814
Klamath Falls 05:32:55 -22.9 Dark Down 25.6 174.3 Low 05:27:12 - 05:38:38 2812
Tulelake 05:32:54 -23.3 Dark Down 25.9 174.6 Low 05:27:11 - 05:38:37 2795
Lakeview 05:32:50 -23.7 Dark Down 25.7 175.8 Low 05:27:07 - 05:38:33 2788
Cedarville 05:32:49 -24.2 Dark Down 26.4 175.9 Low 05:27:06 - 05:38:32 2755
Fall River/Burney 05:32:55 -24.0 Dark Down 26.8 174.7 Low 05:27:12 - 05:38:38 2751
Susanville 05:32:53 -24.8 Dark Down 27.5 175.4 Low 05:27:10 - 05:38:36 2709
Greenville 05:32:54 -24.9 Dark Down 27.7 175.1 Low 05:27:11 - 05:38:37 2700
Gimple 05:32:54 -24.9 Dark Down 27.7 175.2 Low 05:27:11 - 05:38:37 2698
Quincy 05:32:54 -25.0 Dark Down 27.9 175.1 Low 05:27:11 - 05:38:37 2690
Portola 05:32:52 -25.4 Dark Down 28.1 175.6 Low 05:27:09 - 05:38:35 2676
Reno 05:32:50 -25.9 Dark Down 28.4 176.2 Low 05:27:07 - 05:38:33 2651
Carson City 05:32:50 -26.2 Dark Down 28.7 176.2 Low 05:27:07 - 05:38:33 2633
Gardnerville 05:32:50 -26.4 Dark Down 29.0 176.3 Low 05:27:07 - 05:38:33 2619
Yerington 05:32:47 -26.7 Dark Down 29.0 176.9 Low 05:27:04 - 05:38:30 2612
Hawthorne 05:32:45 -27.3 Dark Down 29.5 177.4 Low 05:27:02 - 05:38:28 2578
Lee Vining 05:32:48 -27.4 Dark Down 30.0 176.9 Low 05:27:05 - 05:38:31 2557
Tonopah 05:32:39 -28.3 Dark Down 30.0 178.9 Low 05:26:56 - 05:38:22 2527
Bishop 05:32:44 -28.3 Dark Down 30.6 177.7 Up 05:27:01 - 05:38:27 2511
Lone Pine 05:32:43 -29.0 Dark Down 31.4 178.0 Up 05:27:00 - 05:38:26 2463
Beatty 05:32:38 -29.5 Dark Down 31.1 179.4 Up 05:26:55 - 05:38:21 2455
CPSLO 05:32:57 -28.6 Dark Down 32.6 175.2 Up 05:27:14 - 05:38:40 2435
Indian Springs 05:32:35 -30.2 Dark Down 31.4 180.6 Up 05:26:52 - 05:38:18 2415
Niwot 05:31:48 -31.6 Dark Down 27.1 191.3 Low 05:26:05 - 05:37:31 2379
Henderson 05:32:32 -31.0 Dark Down 32.0 181.3 Up 05:26:49 - 05:38:15 2370
Searchlight/Boulder City 05:32:32 -31.5 Dark Down 32.5 181.4 Up 05:26:49 - 05:38:15 2336
Wildwood 05:32:48 -30.6 Dark Down 33.9 177.4 Up 05:27:05 - 05:38:31 2327
Patrick 05:32:27 -32.0 Dark Down 32.6 182.5 Up 05:26:44 - 05:38:10 2310
Laughlin/Bullhead City 05:32:30 -31.9 Dark Down 32.8 181.8 Up 05:26:47 - 05:38:13 2310
Kingman/Dolan Springs 05:32:28 -32.1 Dark Down 32.8 182.3 Up 05:26:45 - 05:38:11 2301
Mohave Valley 05:32:30 -32.1 Dark Down 33.1 181.8 Up 05:26:47 - 05:38:13 2294
DCO 05:32:24 -32.6 Dark Down 32.8 183.3 Up 05:26:41 - 05:38:07 2277
Idyllwild 05:32:40 -31.9 Dark Down 34.3 179.4 Up 05:26:57 - 05:38:23 2269
Lake Havasu City 05:32:29 -32.5 Dark Down 33.5 182.1 Up 05:26:46 - 05:38:12 2265
Parker 05:32:29 -32.8 Dark Down 33.8 182.1 Up 05:26:46 - 05:38:12 2243
Blythe 05:32:31 -33.1 Dark Down 34.4 181.8 Up 05:26:48 - 05:38:14 2217
Calipatria 05:32:36 -33.0 Dark Down 34.9 180.8 Up 05:26:53 - 05:38:19 2206
Yuma 05:32:32 -33.8 Dark Down 35.3 181.8 Up 05:26:49 - 05:38:15 2160

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 134340, (2018/08/15 05:34UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 39.47  56
Nunki          18:55:15.9 -26:17:49  2.0  7.50  88
PPM 269651     19:20:38.2 -22:24:09  5.8  0.55  94
PPM 269691     19:22:15.6 -22:04:26  8.4  0.10  95
PPM 269692     19:22:15.8 -21:55:20  9.7  0.06  95
134340         19:22:10.5 -21:58:49 13.0        95
Positions are for J2000

Event circumstances last updated at 2017/08/02 16:55:41 UT

Marc W. Buie, Southwest Research Institute

RECON