RECON: TNO occultation with 134340

Event between (134340) Pluto and star UC4-343-188444 with event index number of 58192

Geocentric closest approach at 2017/06/23 08:13:22 UTC

J2000 position of star is 19:18:46.6 -21:24:12
Equinox of date position of star is 19:19:48.8 -21:22:13
Stellar brightness R=15.9, use SENSEUP=128
Star is 153 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=14.8

[RECON map]
TNO is 33.4 AU from the Sun and 32.4 AU from the Earth.
The TNO is moving 22.9 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 52 seconds.
The 1-sigma cross-track error in the shadow position is 1175 km.
The sky-plane scale is 23482.1 km/arcsec.

The TNO has an absolute magnitude Hv=-0.4
Diameter=7244.6 km assuming a 5% albedo -- 315.8 sec chord
Diameter=2957.6 km assuming a 30% albedo -- 128.9 sec chord
Dynamical classification is 3:2E

Star training set for 134340, (2017/06/23 08:13UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:28.9 -26:28:10  0.9 38.86 165
Nunki          18:56:20.9 -26:16:25  2.0  7.27 157
PPM 269651     19:21:40.9 -22:22:07  5.8  1.09 152
PPM 269603     19:19:50.2 -21:22:40  8.5  0.01 153
134340         19:19:48.9 -21:22:13 15.9       152
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 12.9 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 08:13:14 -17.6 AT Down 18.5 166.1 Really Low 08:08:24 - 08:18:05 4717

Tonasket 08:13:14 -17.8 AT Down 18.8 166.1 Really Low 08:08:23 - 08:18:04 4709

Okanogan 08:13:15 -18.2 Dark Down 19.1 165.9 Really Low 08:08:24 - 08:18:05 4698

Brewster 08:13:15 -18.4 Dark Down 19.3 165.7 Really Low 08:08:25 - 08:18:06 4690

Manson/Chelan 08:13:17 -18.7 Dark Down 19.4 165.4 Really Low 08:08:26 - 08:18:07 4686

Entiat 08:13:18 -18.9 Dark Down 19.6 165.3 Really Low 08:08:27 - 08:18:08 4678

Wenatchee 08:13:19 -19.1 Dark Down 19.9 165.2 Really Low 08:08:28 - 08:18:09 4670

Ellensburg 08:13:19 -19.6 Dark Down 20.2 164.9 Low 08:08:29 - 08:18:10 4657

Yakima 08:13:20 -20.0 Dark Down 20.6 164.8 Low 08:08:29 - 08:18:10 4642

Toppenish/White Swan 08:13:19 -20.2 Dark Down 20.9 165.0 Low 08:08:29 - 08:18:10 4632

Pasco 08:13:15 -20.3 Dark Down 21.2 166.2 Low 08:08:25 - 08:18:06 4617

Goldendale 08:13:22 -20.7 Dark Down 21.3 164.5 Low 08:08:32 - 08:18:13 4614

The Dalles 08:13:22 -21.0 Dark Down 21.5 164.1 Low 08:08:32 - 08:18:13 4608

PNWRO 08:13:15 -20.5 Dark Down 21.5 166.4 Low 08:08:25 - 08:18:06 4606

George/Umatilla 08:13:17 -20.6 Dark Down 21.5 166.0 Low 08:08:26 - 08:18:07 4606

Maupin 08:13:24 -21.4 Dark Down 21.9 164.2 Low 08:08:33 - 08:18:14 4590

Madras/Culver 08:13:24 -21.9 Dark Down 22.4 164.1 Low 08:08:34 - 08:18:15 4569

Sisters 08:13:26 -22.3 Dark Down 22.6 163.6 Low 08:08:36 - 08:18:17 4559

Redmond 08:13:25 -22.3 Dark Down 22.7 164.0 Low 08:08:34 - 08:18:15 4555

Bend 08:13:26 -22.5 Dark Down 22.9 163.9 Low 08:08:35 - 08:18:16 4547

Oregon Observatory 08:13:26 -22.7 Dark Down 23.1 163.7 Low 08:08:36 - 08:18:17 4541

La Pine/Gilchrist 08:13:27 -22.9 Dark Down 23.3 163.6 Low 08:08:36 - 08:18:17 4532

North Lake 08:13:26 -23.3 Dark Down 23.8 164.2 Low 08:08:35 - 08:18:16 4509

Chiloquin 08:13:29 -24.0 Dark Down 24.2 163.2 Low 08:08:39 - 08:18:20 4486

Paisley 08:13:25 -23.9 Dark Down 24.4 164.5 Low 08:08:35 - 08:18:16 4482

Klamath Falls 08:13:30 -24.3 Dark Down 24.6 163.2 Low 08:08:39 - 08:18:20 4470

Lakeview 08:13:25 -24.4 Dark Down 24.9 164.6 Low 08:08:35 - 08:18:16 4457

Tulelake 08:13:29 -24.6 Dark Down 24.9 163.5 Low 08:08:39 - 08:18:20 4456

Cedarville 08:13:25 -25.0 Dark Down 25.6 164.7 Low 08:08:34 - 08:18:15 4426

Fall River/Burney 08:13:30 -25.5 Dark Down 25.8 163.4 Low 08:08:39 - 08:18:20 4412

Susanville 08:13:28 -26.1 Dark Down 26.6 164.1 Low 08:08:38 - 08:18:19 4376

Greenville 08:13:30 -26.4 Dark Down 26.8 163.7 Low 08:08:39 - 08:18:20 4365

Gimple 08:13:29 -26.4 Dark Down 26.8 163.8 Low 08:08:39 - 08:18:20 4364

Quincy 08:13:30 -26.6 Dark Down 27.0 163.7 Low 08:08:39 - 08:18:20 4355

Portola 08:13:28 -26.7 Dark Down 27.2 164.2 Low 08:08:37 - 08:18:18 4345

Reno 08:13:26 -27.0 Dark Down 27.6 164.8 Low 08:08:36 - 08:18:17 4326

Carson City 08:13:27 -27.3 Dark Down 27.9 164.8 Low 08:08:36 - 08:18:17 4308

Gardnerville 08:13:27 -27.6 Dark Down 28.2 164.8 Low 08:08:37 - 08:18:18 4295

Yerington 08:13:24 -27.5 Dark Down 28.2 165.4 Low 08:08:34 - 08:18:15 4292

Hawthorne 08:13:23 -27.9 Dark Down 28.8 165.9 Low 08:08:32 - 08:18:13 4263

Lee Vining 08:13:26 -28.5 Dark Down 29.2 165.3 Low 08:08:35 - 08:18:16 4239

Tonopah 08:13:19 -28.3 Dark Down 29.5 167.3 Low 08:08:28 - 08:18:09 4225

Bishop 08:13:23 -29.1 Dark Down 30.0 166.0 Low 08:08:33 - 08:18:14 4199

Niwot 08:12:33 -24.4 Dark Down 28.5 180.0 Low 08:07:43 - 08:17:24 4167

Beatty 08:13:19 -29.4 Dark Down 30.7 167.6 Up 08:08:28 - 08:18:09 4156

Lone Pine 08:13:24 -29.8 Dark Down 30.8 166.2 Up 08:08:33 - 08:18:14 4154

Indian Springs 08:13:14 -29.6 Dark Down 31.2 168.7 Up 08:08:24 - 08:18:05 4126

CPSLO 08:13:35 -31.2 Dark Down 31.5 163.3 Up 08:08:45 - 08:18:26 4105

Henderson 08:13:12 -30.1 Dark Down 31.8 169.4 Up 08:08:21 - 08:18:02 4087

Searchlight/Boulder City 08:13:12 -30.7 Dark Down 32.4 169.4 Up 08:08:22 - 08:18:03 4054

Patrick 08:13:08 -30.6 Dark Down 32.6 170.5 Up 08:08:18 - 08:17:59 4038

Laughlin/Bullhead City 08:13:11 -30.9 Dark Down 32.7 169.7 Up 08:08:21 - 08:18:02 4032

Kingman/Dolan Springs 08:13:10 -30.8 Dark Down 32.8 170.3 Up 08:08:19 - 08:18:00 4027

Mohave Valley 08:13:11 -31.2 Dark Down 33.0 169.7 Up 08:08:21 - 08:18:02 4016

Wildwood 08:13:28 -32.3 Dark Down 33.1 165.3 Up 08:08:37 - 08:18:18 4015

DCO 08:13:06 -30.8 Dark Down 33.0 171.2 Up 08:08:15 - 08:17:56 4011

Lake Havasu City 08:13:11 -31.5 Dark Down 33.4 169.9 Up 08:08:21 - 08:18:02 3989

Idyllwild 08:13:21 -32.6 Dark Down 33.8 167.2 Up 08:08:31 - 08:18:12 3974

Parker 08:13:11 -31.9 Dark Down 33.8 169.9 Up 08:08:21 - 08:18:02 3968

Blythe 08:13:13 -32.4 Dark Down 34.3 169.5 Up 08:08:23 - 08:18:04 3940

Calipatria 08:13:18 -33.0 Dark Down 34.6 168.4 Up 08:08:27 - 08:18:08 3921

Yuma 08:13:14 -33.4 Dark Down 35.2 169.4 Up 08:08:24 - 08:18:05 3883

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, (2017/06/23 08:13UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 38.86 165
Nunki          18:55:15.9 -26:17:49  2.0  7.27 157
PPM 269651     19:20:38.2 -22:24:09  5.8  1.09 152
PPM 269603     19:18:47.9 -21:24:38  8.5  0.01 153
134340         19:18:46.6 -21:24:12 15.9       153
Positions are for J2000

Event circumstances last updated at 2017/06/14 16:57:51 UT

Marc W. Buie, Southwest Research Institute

RECON

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Oroville	08:13:14	-17.6	AT	Down	18.5	166.1	Really Low	08:08:24 - 08:18:05	4717
Tonasket	08:13:14	-17.8	AT	Down	18.8	166.1	Really Low	08:08:23 - 08:18:04	4709
Okanogan	08:13:15	-18.2	Dark	Down	19.1	165.9	Really Low	08:08:24 - 08:18:05	4698
Brewster	08:13:15	-18.4	Dark	Down	19.3	165.7	Really Low	08:08:25 - 08:18:06	4690
Manson/Chelan	08:13:17	-18.7	Dark	Down	19.4	165.4	Really Low	08:08:26 - 08:18:07	4686
Entiat	08:13:18	-18.9	Dark	Down	19.6	165.3	Really Low	08:08:27 - 08:18:08	4678
Wenatchee	08:13:19	-19.1	Dark	Down	19.9	165.2	Really Low	08:08:28 - 08:18:09	4670
Ellensburg	08:13:19	-19.6	Dark	Down	20.2	164.9	Low	08:08:29 - 08:18:10	4657
Yakima	08:13:20	-20.0	Dark	Down	20.6	164.8	Low	08:08:29 - 08:18:10	4642
Toppenish/White Swan	08:13:19	-20.2	Dark	Down	20.9	165.0	Low	08:08:29 - 08:18:10	4632
Pasco	08:13:15	-20.3	Dark	Down	21.2	166.2	Low	08:08:25 - 08:18:06	4617
Goldendale	08:13:22	-20.7	Dark	Down	21.3	164.5	Low	08:08:32 - 08:18:13	4614
The Dalles	08:13:22	-21.0	Dark	Down	21.5	164.1	Low	08:08:32 - 08:18:13	4608
PNWRO	08:13:15	-20.5	Dark	Down	21.5	166.4	Low	08:08:25 - 08:18:06	4606
George/Umatilla	08:13:17	-20.6	Dark	Down	21.5	166.0	Low	08:08:26 - 08:18:07	4606
Maupin	08:13:24	-21.4	Dark	Down	21.9	164.2	Low	08:08:33 - 08:18:14	4590
Madras/Culver	08:13:24	-21.9	Dark	Down	22.4	164.1	Low	08:08:34 - 08:18:15	4569
Sisters	08:13:26	-22.3	Dark	Down	22.6	163.6	Low	08:08:36 - 08:18:17	4559
Redmond	08:13:25	-22.3	Dark	Down	22.7	164.0	Low	08:08:34 - 08:18:15	4555
Bend	08:13:26	-22.5	Dark	Down	22.9	163.9	Low	08:08:35 - 08:18:16	4547
Oregon Observatory	08:13:26	-22.7	Dark	Down	23.1	163.7	Low	08:08:36 - 08:18:17	4541
La Pine/Gilchrist	08:13:27	-22.9	Dark	Down	23.3	163.6	Low	08:08:36 - 08:18:17	4532
North Lake	08:13:26	-23.3	Dark	Down	23.8	164.2	Low	08:08:35 - 08:18:16	4509
Chiloquin	08:13:29	-24.0	Dark	Down	24.2	163.2	Low	08:08:39 - 08:18:20	4486
Paisley	08:13:25	-23.9	Dark	Down	24.4	164.5	Low	08:08:35 - 08:18:16	4482
Klamath Falls	08:13:30	-24.3	Dark	Down	24.6	163.2	Low	08:08:39 - 08:18:20	4470
Lakeview	08:13:25	-24.4	Dark	Down	24.9	164.6	Low	08:08:35 - 08:18:16	4457
Tulelake	08:13:29	-24.6	Dark	Down	24.9	163.5	Low	08:08:39 - 08:18:20	4456
Cedarville	08:13:25	-25.0	Dark	Down	25.6	164.7	Low	08:08:34 - 08:18:15	4426
Fall River/Burney	08:13:30	-25.5	Dark	Down	25.8	163.4	Low	08:08:39 - 08:18:20	4412
Susanville	08:13:28	-26.1	Dark	Down	26.6	164.1	Low	08:08:38 - 08:18:19	4376
Greenville	08:13:30	-26.4	Dark	Down	26.8	163.7	Low	08:08:39 - 08:18:20	4365
Gimple	08:13:29	-26.4	Dark	Down	26.8	163.8	Low	08:08:39 - 08:18:20	4364
Quincy	08:13:30	-26.6	Dark	Down	27.0	163.7	Low	08:08:39 - 08:18:20	4355
Portola	08:13:28	-26.7	Dark	Down	27.2	164.2	Low	08:08:37 - 08:18:18	4345
Reno	08:13:26	-27.0	Dark	Down	27.6	164.8	Low	08:08:36 - 08:18:17	4326
Carson City	08:13:27	-27.3	Dark	Down	27.9	164.8	Low	08:08:36 - 08:18:17	4308
Gardnerville	08:13:27	-27.6	Dark	Down	28.2	164.8	Low	08:08:37 - 08:18:18	4295
Yerington	08:13:24	-27.5	Dark	Down	28.2	165.4	Low	08:08:34 - 08:18:15	4292
Hawthorne	08:13:23	-27.9	Dark	Down	28.8	165.9	Low	08:08:32 - 08:18:13	4263
Lee Vining	08:13:26	-28.5	Dark	Down	29.2	165.3	Low	08:08:35 - 08:18:16	4239
Tonopah	08:13:19	-28.3	Dark	Down	29.5	167.3	Low	08:08:28 - 08:18:09	4225
Bishop	08:13:23	-29.1	Dark	Down	30.0	166.0	Low	08:08:33 - 08:18:14	4199
Niwot	08:12:33	-24.4	Dark	Down	28.5	180.0	Low	08:07:43 - 08:17:24	4167
Beatty	08:13:19	-29.4	Dark	Down	30.7	167.6	Up	08:08:28 - 08:18:09	4156
Lone Pine	08:13:24	-29.8	Dark	Down	30.8	166.2	Up	08:08:33 - 08:18:14	4154
Indian Springs	08:13:14	-29.6	Dark	Down	31.2	168.7	Up	08:08:24 - 08:18:05	4126
CPSLO	08:13:35	-31.2	Dark	Down	31.5	163.3	Up	08:08:45 - 08:18:26	4105
Henderson	08:13:12	-30.1	Dark	Down	31.8	169.4	Up	08:08:21 - 08:18:02	4087
Searchlight/Boulder City	08:13:12	-30.7	Dark	Down	32.4	169.4	Up	08:08:22 - 08:18:03	4054
Patrick	08:13:08	-30.6	Dark	Down	32.6	170.5	Up	08:08:18 - 08:17:59	4038
Laughlin/Bullhead City	08:13:11	-30.9	Dark	Down	32.7	169.7	Up	08:08:21 - 08:18:02	4032
Kingman/Dolan Springs	08:13:10	-30.8	Dark	Down	32.8	170.3	Up	08:08:19 - 08:18:00	4027
Mohave Valley	08:13:11	-31.2	Dark	Down	33.0	169.7	Up	08:08:21 - 08:18:02	4016
Wildwood	08:13:28	-32.3	Dark	Down	33.1	165.3	Up	08:08:37 - 08:18:18	4015
DCO	08:13:06	-30.8	Dark	Down	33.0	171.2	Up	08:08:15 - 08:17:56	4011
Lake Havasu City	08:13:11	-31.5	Dark	Down	33.4	169.9	Up	08:08:21 - 08:18:02	3989
Idyllwild	08:13:21	-32.6	Dark	Down	33.8	167.2	Up	08:08:31 - 08:18:12	3974
Parker	08:13:11	-31.9	Dark	Down	33.8	169.9	Up	08:08:21 - 08:18:02	3968
Blythe	08:13:13	-32.4	Dark	Down	34.3	169.5	Up	08:08:23 - 08:18:04	3940
Calipatria	08:13:18	-33.0	Dark	Down	34.6	168.4	Up	08:08:27 - 08:18:08	3921
Yuma	08:13:14	-33.4	Dark	Down	35.2	169.4	Up	08:08:24 - 08:18:05	3883