RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1180:11927920 with event index number of 1510524

Geocentric closest approach at 2026/07/16 07:27:01 UTC

J2000 position of star is 19:56:38.9 +28:04:09
Equinox of date position of star is 19:57:30.0 +28:07:33
Stellar brightness G=15.7, use SENSEUP=128
Star is 131 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=22.2

[RECON map]
TNO is 16.1 AU from the Sun and 15.4 AU from the Earth.
The TNO is moving 30.4 km/sec on the sky relative to the star, or, 9.8 arcsec/hr.
The 1-sigma error in the time of the event is 31 seconds.
The 1-sigma cross-track error in the shadow position is 2332 km.
The sky-plane scale is 11186.1 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=83.2 km assuming a 5% albedo -- 2.0 sec chord
Diameter=34.0 km assuming a 30% albedo -- 0.8 sec chord
Dynamical classification is CENTAURR

Star training set for 342842, (2026/07/16 07:27UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:20.3 +45:22:35  1.3 19.37 118
53Eps Cyg      20:47:17.0 +34:04:13  2.5 12.14 129
15 Vul         20:02:11.6 +27:49:42  4.6  1.03 131
PPM 110065     19:57:38.6 +28:41:54  8.2  0.56 130
PPM 110059     19:57:25.2 +28:21:04  9.9  0.22 130
342842         19:57:44.0 +28:08:29 15.7       131
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 25.4 km RECON observability=1.0 and success probability=11.7%

Site Site mid-time
(UT) Sun alt
(deg) Sky Moon Star alt
(deg) Star az
(deg) Target Observing Time
(UT) X-track
(km)

Clarence Fulton 07:27:09 -18.0 AT Down 65.9 152.1 Up 07:24:04 - 07:30:14 4751

Kelowna 07:27:10 -18.3 Dark Down 66.2 151.4 Up 07:24:05 - 07:30:15 4719

Peachland 07:27:11 -18.4 Dark Down 66.2 150.6 Up 07:24:06 - 07:30:16 4716

Victoria 07:27:21 -19.2 Dark Down 65.9 142.0 Up 07:24:16 - 07:30:26 4701

Summerland 07:27:11 -18.6 Dark Down 66.3 150.7 Up 07:24:06 - 07:30:16 4700

Penticton 07:27:11 -18.6 Dark Down 66.4 150.8 Up 07:24:06 - 07:30:16 4691

Oliver 07:27:11 -19.0 Dark Down 66.7 150.4 Up 07:24:06 - 07:30:16 4658

Anarchist Mountain Observatory 07:27:11 -19.2 Dark Down 66.9 150.6 Up 07:24:06 - 07:30:16 4636

Tonasket 07:27:12 -19.5 Dark Down 67.2 150.1 Up 07:24:07 - 07:30:17 4609

Okanogan 07:27:13 -19.8 Dark Down 67.4 149.4 Up 07:24:08 - 07:30:18 4581

Brewster 07:27:14 -20.0 Dark Down 67.6 148.7 Up 07:24:09 - 07:30:19 4561

Manson/Chelan 07:27:15 -20.2 Dark Down 67.6 147.6 Up 07:24:10 - 07:30:20 4551

Entiat 07:27:15 -20.4 Dark Down 67.8 147.2 Up 07:24:10 - 07:30:20 4532

Wenatchee 07:27:16 -20.7 Dark Down 68.0 146.6 Up 07:24:11 - 07:30:21 4511

Ellensburg 07:27:17 -21.0 Dark Down 68.2 145.6 Up 07:24:12 - 07:30:22 4478

Yakima 07:27:18 -21.4 Dark Down 68.6 145.0 Up 07:24:13 - 07:30:23 4439

Toppenish/White Swan 07:27:17 -21.7 Dark Down 68.8 145.0 Up 07:24:12 - 07:30:22 4414

Goldendale 07:27:19 -22.2 Dark Down 69.1 143.3 Up 07:24:14 - 07:30:24 4373

Pasco 07:27:15 -21.9 Dark Down 69.4 147.7 Up 07:24:10 - 07:30:20 4367

The Dalles 07:27:20 -22.3 Dark Down 69.1 142.1 Up 07:24:15 - 07:30:25 4362

PNWRO 07:27:15 -22.2 Dark Down 69.7 147.8 Up 07:24:10 - 07:30:20 4337

Maupin 07:27:21 -22.8 Dark Down 69.5 141.7 Up 07:24:16 - 07:30:26 4319

Sisters 07:27:23 -23.6 Dark Down 69.9 139.1 Up 07:24:18 - 07:30:28 4249

Redmond 07:27:23 -23.6 Dark Down 70.2 139.9 Up 07:24:18 - 07:30:28 4234

Bend 07:27:23 -23.8 Dark Down 70.3 139.2 Up 07:24:18 - 07:30:28 4218

Oregon Observatory 07:27:24 -24.0 Dark Down 70.3 138.6 Up 07:24:19 - 07:30:29 4205

La Pine/Gilchrist 07:27:24 -24.2 Dark Down 70.4 138.1 Up 07:24:19 - 07:30:29 4187

North Lake 07:27:23 -24.7 Dark Down 71.1 138.7 Up 07:24:18 - 07:30:28 4127

Paisley 07:27:23 -25.3 Dark Down 71.6 138.4 Up 07:24:18 - 07:30:28 4062

Klamath Falls 07:27:27 -25.6 Dark Down 71.4 134.7 Up 07:24:22 - 07:30:32 4054

Lakeview 07:27:24 -25.8 Dark Down 72.1 137.8 Up 07:24:19 - 07:30:29 4007

Cedarville 07:27:24 -26.5 Dark Down 72.7 136.8 Up 07:24:19 - 07:30:29 3937

Fall River/Burney 07:27:28 -26.8 Dark Down 72.4 132.9 Up 07:24:23 - 07:30:33 3927

Susanville 07:27:27 -27.5 Dark Down 73.2 133.1 Up 07:24:22 - 07:30:32 3841

Greenville 07:27:28 -27.7 Dark Down 73.3 131.8 Up 07:24:23 - 07:30:33 3823

Gimple 07:27:28 -27.7 Dark Down 73.3 132.0 Up 07:24:23 - 07:30:33 3820

Quincy 07:27:28 -27.9 Dark Down 73.4 131.3 Up 07:24:23 - 07:30:33 3803

Portola 07:27:28 -28.1 Dark Down 73.7 132.1 Up 07:24:23 - 07:30:33 3775

Reno 07:27:26 -28.5 Dark Down 74.3 133.0 Up 07:24:21 - 07:30:31 3729

Carson City 07:27:26 -28.8 Dark Down 74.5 132.1 Up 07:24:21 - 07:30:31 3692

Gardnerville 07:27:27 -29.1 Dark Down 74.7 131.6 Up 07:24:22 - 07:30:32 3666

Yerington 07:27:25 -29.1 Dark Down 75.0 133.2 Up 07:24:20 - 07:30:30 3653

Hawthorne 07:27:25 -29.6 Dark Down 75.7 133.3 Up 07:24:20 - 07:30:30 3590

Lee Vining 07:27:27 -30.1 Dark Down 75.8 130.4 Up 07:24:22 - 07:30:32 3548

Tonopah 07:27:21 -30.2 Dark Down 76.8 136.0 Up 07:24:16 - 07:30:26 3499

Bishop 07:27:26 -30.8 Dark Down 76.6 130.5 Up 07:24:21 - 07:30:31 3465

Niwot 07:26:47 -28.4 Dark Down 77.9 186.4 Up 07:23:42 - 07:29:52 3398

SwRI 07:26:47 -28.5 Dark Down 78.0 186.1 Up 07:23:42 - 07:29:52 3389

Beatty 07:27:22 -31.4 Dark Down 77.8 133.8 Up 07:24:17 - 07:30:27 3367

CPSLO 07:27:35 -32.5 Dark Down 76.2 117.9 Up 07:24:30 - 07:30:40 3329

Indian Springs 07:27:19 -31.9 Dark Down 78.7 136.2 Up 07:24:14 - 07:30:24 3301

Henderson 07:27:18 -32.4 Dark Down 79.5 136.8 Up 07:24:13 - 07:30:23 3226

Searchlight/Boulder City 07:27:19 -33.0 Dark Down 79.9 134.8 Up 07:24:14 - 07:30:24 3164

Wildwood 07:27:30 -34.0 Dark Down 78.3 117.8 Up 07:24:25 - 07:30:35 3138

Patrick 07:27:16 -33.1 Dark Down 80.5 138.8 Up 07:24:11 - 07:30:21 3128

Laughlin/Bullhead City 07:27:18 -33.3 Dark Down 80.3 135.0 Up 07:24:13 - 07:30:23 3123

Kingman/Dolan Springs 07:27:16 -33.4 Dark Down 80.6 137.1 Up 07:24:11 - 07:30:21 3110

Mohave Valley 07:27:18 -33.6 Dark Down 80.5 133.8 Up 07:24:13 - 07:30:23 3095

DCO 07:27:14 -33.5 Dark Down 81.1 140.7 Up 07:24:09 - 07:30:19 3076

Lake Havasu City 07:27:18 -34.0 Dark Down 80.9 133.1 Up 07:24:13 - 07:30:23 3046

Idyllwild 07:27:26 -34.6 Dark Down 79.8 121.2 Up 07:24:21 - 07:30:31 3041

Parker 07:27:18 -34.4 Dark Down 81.2 131.5 Up 07:24:13 - 07:30:23 3008

Blythe 07:27:20 -34.9 Dark Down 81.3 127.7 Up 07:24:15 - 07:30:25 2963

Calipatria 07:27:23 -35.3 Dark Down 81.0 121.8 Up 07:24:18 - 07:30:28 2940

George/Scottsdale 07:27:12 -34.9 Dark Down 82.9 141.1 Up 07:24:07 - 07:30:17 2893

Yuma 07:27:21 -35.8 Dark Down 81.8 122.5 Up 07:24:16 - 07:30:26 2868

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 342842, (2026/07/16 07:27UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 19.37 118
53Eps Cyg      20:46:13.3 +33:58:20  2.5 12.14 129
15 Vul         20:01:06.1 +27:45:13  4.6  1.03 131
PPM 110065     19:56:33.9 +28:37:34  8.2  0.56 130
PPM 110059     19:56:20.3 +28:16:44  9.9  0.22 130
342842         19:56:38.9 +28:04:09 15.7       131
Positions are for J2000

Event circumstances last updated at 2020/10/30 21:41:48 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)
Clarence Fulton	07:27:09	-18.0	AT	Down	65.9	152.1	Up	07:24:04 - 07:30:14	4751
Kelowna	07:27:10	-18.3	Dark	Down	66.2	151.4	Up	07:24:05 - 07:30:15	4719
Peachland	07:27:11	-18.4	Dark	Down	66.2	150.6	Up	07:24:06 - 07:30:16	4716
Victoria	07:27:21	-19.2	Dark	Down	65.9	142.0	Up	07:24:16 - 07:30:26	4701
Summerland	07:27:11	-18.6	Dark	Down	66.3	150.7	Up	07:24:06 - 07:30:16	4700
Penticton	07:27:11	-18.6	Dark	Down	66.4	150.8	Up	07:24:06 - 07:30:16	4691
Oliver	07:27:11	-19.0	Dark	Down	66.7	150.4	Up	07:24:06 - 07:30:16	4658
Anarchist Mountain Observatory	07:27:11	-19.2	Dark	Down	66.9	150.6	Up	07:24:06 - 07:30:16	4636
Tonasket	07:27:12	-19.5	Dark	Down	67.2	150.1	Up	07:24:07 - 07:30:17	4609
Okanogan	07:27:13	-19.8	Dark	Down	67.4	149.4	Up	07:24:08 - 07:30:18	4581
Brewster	07:27:14	-20.0	Dark	Down	67.6	148.7	Up	07:24:09 - 07:30:19	4561
Manson/Chelan	07:27:15	-20.2	Dark	Down	67.6	147.6	Up	07:24:10 - 07:30:20	4551
Entiat	07:27:15	-20.4	Dark	Down	67.8	147.2	Up	07:24:10 - 07:30:20	4532
Wenatchee	07:27:16	-20.7	Dark	Down	68.0	146.6	Up	07:24:11 - 07:30:21	4511
Ellensburg	07:27:17	-21.0	Dark	Down	68.2	145.6	Up	07:24:12 - 07:30:22	4478
Yakima	07:27:18	-21.4	Dark	Down	68.6	145.0	Up	07:24:13 - 07:30:23	4439
Toppenish/White Swan	07:27:17	-21.7	Dark	Down	68.8	145.0	Up	07:24:12 - 07:30:22	4414
Goldendale	07:27:19	-22.2	Dark	Down	69.1	143.3	Up	07:24:14 - 07:30:24	4373
Pasco	07:27:15	-21.9	Dark	Down	69.4	147.7	Up	07:24:10 - 07:30:20	4367
The Dalles	07:27:20	-22.3	Dark	Down	69.1	142.1	Up	07:24:15 - 07:30:25	4362
PNWRO	07:27:15	-22.2	Dark	Down	69.7	147.8	Up	07:24:10 - 07:30:20	4337
Maupin	07:27:21	-22.8	Dark	Down	69.5	141.7	Up	07:24:16 - 07:30:26	4319
Sisters	07:27:23	-23.6	Dark	Down	69.9	139.1	Up	07:24:18 - 07:30:28	4249
Redmond	07:27:23	-23.6	Dark	Down	70.2	139.9	Up	07:24:18 - 07:30:28	4234
Bend	07:27:23	-23.8	Dark	Down	70.3	139.2	Up	07:24:18 - 07:30:28	4218
Oregon Observatory	07:27:24	-24.0	Dark	Down	70.3	138.6	Up	07:24:19 - 07:30:29	4205
La Pine/Gilchrist	07:27:24	-24.2	Dark	Down	70.4	138.1	Up	07:24:19 - 07:30:29	4187
North Lake	07:27:23	-24.7	Dark	Down	71.1	138.7	Up	07:24:18 - 07:30:28	4127
Paisley	07:27:23	-25.3	Dark	Down	71.6	138.4	Up	07:24:18 - 07:30:28	4062
Klamath Falls	07:27:27	-25.6	Dark	Down	71.4	134.7	Up	07:24:22 - 07:30:32	4054
Lakeview	07:27:24	-25.8	Dark	Down	72.1	137.8	Up	07:24:19 - 07:30:29	4007
Cedarville	07:27:24	-26.5	Dark	Down	72.7	136.8	Up	07:24:19 - 07:30:29	3937
Fall River/Burney	07:27:28	-26.8	Dark	Down	72.4	132.9	Up	07:24:23 - 07:30:33	3927
Susanville	07:27:27	-27.5	Dark	Down	73.2	133.1	Up	07:24:22 - 07:30:32	3841
Greenville	07:27:28	-27.7	Dark	Down	73.3	131.8	Up	07:24:23 - 07:30:33	3823
Gimple	07:27:28	-27.7	Dark	Down	73.3	132.0	Up	07:24:23 - 07:30:33	3820
Quincy	07:27:28	-27.9	Dark	Down	73.4	131.3	Up	07:24:23 - 07:30:33	3803
Portola	07:27:28	-28.1	Dark	Down	73.7	132.1	Up	07:24:23 - 07:30:33	3775
Reno	07:27:26	-28.5	Dark	Down	74.3	133.0	Up	07:24:21 - 07:30:31	3729
Carson City	07:27:26	-28.8	Dark	Down	74.5	132.1	Up	07:24:21 - 07:30:31	3692
Gardnerville	07:27:27	-29.1	Dark	Down	74.7	131.6	Up	07:24:22 - 07:30:32	3666
Yerington	07:27:25	-29.1	Dark	Down	75.0	133.2	Up	07:24:20 - 07:30:30	3653
Hawthorne	07:27:25	-29.6	Dark	Down	75.7	133.3	Up	07:24:20 - 07:30:30	3590
Lee Vining	07:27:27	-30.1	Dark	Down	75.8	130.4	Up	07:24:22 - 07:30:32	3548
Tonopah	07:27:21	-30.2	Dark	Down	76.8	136.0	Up	07:24:16 - 07:30:26	3499
Bishop	07:27:26	-30.8	Dark	Down	76.6	130.5	Up	07:24:21 - 07:30:31	3465
Niwot	07:26:47	-28.4	Dark	Down	77.9	186.4	Up	07:23:42 - 07:29:52	3398
SwRI	07:26:47	-28.5	Dark	Down	78.0	186.1	Up	07:23:42 - 07:29:52	3389
Beatty	07:27:22	-31.4	Dark	Down	77.8	133.8	Up	07:24:17 - 07:30:27	3367
CPSLO	07:27:35	-32.5	Dark	Down	76.2	117.9	Up	07:24:30 - 07:30:40	3329
Indian Springs	07:27:19	-31.9	Dark	Down	78.7	136.2	Up	07:24:14 - 07:30:24	3301
Henderson	07:27:18	-32.4	Dark	Down	79.5	136.8	Up	07:24:13 - 07:30:23	3226
Searchlight/Boulder City	07:27:19	-33.0	Dark	Down	79.9	134.8	Up	07:24:14 - 07:30:24	3164
Wildwood	07:27:30	-34.0	Dark	Down	78.3	117.8	Up	07:24:25 - 07:30:35	3138
Patrick	07:27:16	-33.1	Dark	Down	80.5	138.8	Up	07:24:11 - 07:30:21	3128
Laughlin/Bullhead City	07:27:18	-33.3	Dark	Down	80.3	135.0	Up	07:24:13 - 07:30:23	3123
Kingman/Dolan Springs	07:27:16	-33.4	Dark	Down	80.6	137.1	Up	07:24:11 - 07:30:21	3110
Mohave Valley	07:27:18	-33.6	Dark	Down	80.5	133.8	Up	07:24:13 - 07:30:23	3095
DCO	07:27:14	-33.5	Dark	Down	81.1	140.7	Up	07:24:09 - 07:30:19	3076
Lake Havasu City	07:27:18	-34.0	Dark	Down	80.9	133.1	Up	07:24:13 - 07:30:23	3046
Idyllwild	07:27:26	-34.6	Dark	Down	79.8	121.2	Up	07:24:21 - 07:30:31	3041
Parker	07:27:18	-34.4	Dark	Down	81.2	131.5	Up	07:24:13 - 07:30:23	3008
Blythe	07:27:20	-34.9	Dark	Down	81.3	127.7	Up	07:24:15 - 07:30:25	2963
Calipatria	07:27:23	-35.3	Dark	Down	81.0	121.8	Up	07:24:18 - 07:30:28	2940
George/Scottsdale	07:27:12	-34.9	Dark	Down	82.9	141.1	Up	07:24:07 - 07:30:17	2893
Yuma	07:27:21	-35.8	Dark	Down	81.8	122.5	Up	07:24:16 - 07:30:26	2868