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 05:33:37 UTC

J2000 position of star is 19:22:10.5 -21:58:49
Equinox of date position of star is 19:23:14.6 -21:56:42
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 -- 442.1 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 10.8 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 - 05:38:23 3042
Tonasket 05:32:41 -19.0 Dark Down 19.3 176.8 Really Low 05:26:59 - 05:38:24 3034
Okanogan 05:32:42 -19.2 Dark Down 19.6 176.7 Really Low 05:27:00 - 05:38:25 3024
Brewster 05:32:43 -19.4 Dark Down 19.9 176.5 Really Low 05:27:01 - 05:38:26 3018
Manson/Chelan 05:32:44 -19.4 Dark Down 20.0 176.1 Low 05:27:02 - 05:38:27 3015
Entiat 05:32:45 -19.5 Dark Down 20.3 176.0 Low 05:27:02 - 05:38:27 3008
Wenatchee 05:32:45 -19.7 Dark Down 20.5 175.9 Low 05:27:03 - 05:38:28 3001
Ellensburg 05:32:47 -19.9 Dark Down 20.9 175.7 Low 05:27:04 - 05:38:29 2988
Yakima 05:32:47 -20.2 Dark Down 21.3 175.7 Low 05:27:04 - 05:38:29 2973
Toppenish/White Swan 05:32:47 -20.4 Dark Down 21.5 175.9 Low 05:27:04 - 05:38:29 2962
Goldendale 05:32:48 -20.7 Dark Down 22.1 175.4 Low 05:27:06 - 05:38:31 2947
The Dalles 05:32:50 -20.7 Dark Down 22.3 175.0 Low 05:27:08 - 05:38:33 2943
Pasco 05:32:41 -21.1 Dark Down 21.7 177.1 Low 05:26:59 - 05:38:24 2938
George/Umatilla 05:32:43 -21.2 Dark Down 22.0 176.9 Low 05:27:00 - 05:38:25 2929
PNWRO 05:32:41 -21.4 Dark Down 22.0 177.3 Low 05:26:58 - 05:38:23 2925
Maupin 05:32:50 -21.0 Dark Down 22.7 175.1 Low 05:27:07 - 05:38:32 2925
Madras/Culver 05:32:50 -21.4 Dark Down 23.2 175.1 Low 05:27:08 - 05:38:33 2903
Sisters 05:32:53 -21.5 Dark Down 23.5 174.6 Low 05:27:10 - 05:38:35 2896
Redmond 05:32:51 -21.7 Dark Down 23.6 175.0 Low 05:27:08 - 05:38:33 2889
Bend 05:32:52 -21.8 Dark Down 23.8 174.9 Low 05:27:09 - 05:38:34 2882
Oregon Observatory 05:32:53 -21.9 Dark Down 24.0 174.7 Low 05:27:10 - 05:38:35 2876
La Pine/Gilchrist 05:32:53 -22.0 Dark Down 24.2 174.7 Low 05:27:11 - 05:38:36 2868
North Lake 05:32:51 -22.6 Dark Down 24.6 175.3 Low 05:27:08 - 05:38:33 2840
Chiloquin 05:32:55 -22.6 Dark Down 25.2 174.3 Low 05:27:13 - 05:38:38 2825
Paisley 05:32:50 -23.2 Dark Down 25.2 175.6 Low 05:27:07 - 05:38:32 2810
Klamath Falls 05:32:55 -22.9 Dark Down 25.6 174.3 Low 05:27:13 - 05:38:38 2808
Tulelake 05:32:54 -23.3 Dark Down 25.9 174.6 Low 05:27:12 - 05:38:37 2791
Lakeview 05:32:50 -23.7 Dark Down 25.7 175.8 Low 05:27:07 - 05:38:32 2784
Cedarville 05:32:50 -24.2 Dark Down 26.4 175.9 Low 05:27:07 - 05:38:32 2750
Fall River/Burney 05:32:55 -24.0 Dark Down 26.8 174.7 Low 05:27:12 - 05:38:37 2747
Susanville 05:32:52 -24.8 Dark Down 27.5 175.4 Low 05:27:10 - 05:38:35 2705
Greenville 05:32:54 -24.9 Dark Down 27.7 175.1 Low 05:27:12 - 05:38:37 2696
Gimple 05:32:54 -24.9 Dark Down 27.7 175.2 Low 05:27:11 - 05:38:36 2694
Quincy 05:32:54 -25.0 Dark Down 27.9 175.1 Low 05:27:12 - 05:38:37 2686
Portola 05:32:52 -25.4 Dark Down 28.1 175.6 Low 05:27:09 - 05:38:34 2672
Reno 05:32:50 -25.9 Dark Down 28.4 176.2 Low 05:27:07 - 05:38:32 2647
Carson City 05:32:50 -26.2 Dark Down 28.7 176.2 Low 05:27:07 - 05:38:32 2629
Gardnerville 05:32:50 -26.4 Dark Down 29.0 176.3 Low 05:27:07 - 05:38:32 2615
Yerington 05:32:47 -26.7 Dark Down 29.0 176.9 Low 05:27:05 - 05:38:30 2608
Hawthorne 05:32:45 -27.3 Dark Down 29.5 177.4 Low 05:27:03 - 05:38:28 2574
Lee Vining 05:32:48 -27.4 Dark Down 30.0 176.9 Low 05:27:05 - 05:38:30 2553
Tonopah 05:32:40 -28.3 Dark Down 30.0 178.9 Low 05:26:57 - 05:38:22 2524
Bishop 05:32:45 -28.3 Dark Down 30.6 177.7 Up 05:27:03 - 05:38:28 2508
Lone Pine 05:32:44 -29.0 Dark Down 31.4 178.0 Up 05:27:02 - 05:38:27 2459
Beatty 05:32:38 -29.5 Dark Down 31.1 179.4 Up 05:26:56 - 05:38:21 2452
CPSLO 05:32:57 -28.6 Dark Down 32.6 175.2 Up 05:27:15 - 05:38:40 2432
Indian Springs 05:32:34 -30.2 Dark Down 31.4 180.5 Up 05:26:51 - 05:38:16 2412
Niwot 05:31:48 -31.6 Dark Down 27.1 191.3 Low 05:26:06 - 05:37:31 2376
Henderson 05:32:32 -31.0 Dark Down 32.0 181.3 Up 05:26:49 - 05:38:14 2368
Searchlight/Boulder City 05:32:31 -31.5 Dark Down 32.5 181.4 Up 05:26:49 - 05:38:14 2333
Wildwood 05:32:49 -30.6 Dark Down 33.9 177.4 Up 05:27:06 - 05:38:31 2324
Laughlin/Bullhead City 05:32:30 -31.9 Dark Down 32.8 181.8 Up 05:26:47 - 05:38:12 2308
Patrick 05:32:26 -32.0 Dark Down 32.6 182.5 Up 05:26:44 - 05:38:09 2308
Kingman/Dolan Springs 05:32:28 -32.1 Dark Down 32.8 182.3 Up 05:26:46 - 05:38:11 2299
Mohave Valley 05:32:30 -32.1 Dark Down 33.1 181.8 Up 05:26:47 - 05:38:12 2292
DCO 05:32:23 -32.6 Dark Down 32.8 183.3 Up 05:26:41 - 05:38:06 2275
Idyllwild 05:32:40 -31.9 Dark Down 34.3 179.4 Up 05:26:58 - 05:38:23 2266
Lake Havasu City 05:32:29 -32.5 Dark Down 33.5 182.0 Up 05:26:46 - 05:38:11 2263
Parker 05:32:30 -32.8 Dark Down 33.8 182.1 Up 05:26:47 - 05:38:12 2241
Blythe 05:32:31 -33.1 Dark Down 34.4 181.8 Up 05:26:49 - 05:38:14 2215
Calipatria 05:32:36 -33.0 Dark Down 34.9 180.7 Up 05:26:53 - 05:38:18 2204
Yuma 05:32:32 -33.8 Dark Down 35.3 181.8 Up 05:26:49 - 05:38:14 2159

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 2017/12/05 18:52:18 UT

Marc W. Buie, Southwest Research Institute

RECON