RECON: TNO occultation with 456826

Event between (456826) 07TH422 and star GA1120:02276528 with event index number of 1446920

Geocentric closest approach at 2025/12/05 05:20:55 UTC

J2000 position of star is 06:35:28.7 +23:44:34
Equinox of date position of star is 06:36:39.0 +23:43:34
Stellar brightness G=15.4, use SENSEUP=128
Star is 22 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=22.6

[RECON map]
TNO is 30.7 AU from the Sun and 29.8 AU from the Earth.
The TNO is moving 22.5 km/sec on the sky relative to the star, or, 3.7 arcsec/hr.
The 1-sigma error in the time of the event is 277 seconds.
The 1-sigma cross-track error in the shadow position is 3274 km.
The sky-plane scale is 21613.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.7
Diameter=173.8 km assuming a 5% albedo -- 7.7 sec chord
Diameter=70.9 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is 3:2E+6:4II

Star training set for 456826, (2025/12/05 05:21UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:54.2 +27:57:41  1.1 16.26  36
Alhena         06:39:12.5 +16:22:30  1.9  7.36  25
PPM 096264     06:39:02.6 +24:34:01  6.5  0.96  22
PPM 096281     06:39:27.1 +23:34:50  7.7  0.57  22
PPM 096207     06:36:24.8 +23:21:36 10.0  0.39  22
PPM 096213     06:36:39.8 +23:57:33 10.1  0.26  21
456826         06:37:03.4 +23:43:13 15.4        22
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 3.2 sigma about the mid-time.
The median site spacing is 22.3 km RECON observability=1.0 and success probability=12.5%

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

Kelowna 05:24:09 -50.7 Dark Up 35.2 94.1 Up 05:09:09 - 05:39:09 4068

Summerland 05:24:09 -50.6 Dark Up 35.0 93.7 Up 05:09:09 - 05:39:09 4045

Penticton 05:24:09 -50.7 Dark Up 35.1 93.8 Up 05:09:09 - 05:39:09 4037

Okanagan Falls 05:24:11 -50.8 Dark Up 35.1 93.6 Up 05:09:11 - 05:39:11 4019

Oliver 05:24:10 -50.9 Dark Up 35.1 93.5 Up 05:09:10 - 05:39:10 4003

Anarchist Mountain Observatory 05:24:11 -51.1 Dark Up 35.3 93.5 Up 05:09:11 - 05:39:11 3983

Oroville 05:24:11 -51.1 Dark Up 35.2 93.4 Up 05:09:11 - 05:39:11 3978

Tonasket 05:24:11 -51.2 Dark Up 35.2 93.3 Up 05:09:11 - 05:39:11 3955

Okanogan 05:24:13 -51.3 Dark Up 35.2 92.9 Up 05:09:13 - 05:39:13 3926

Brewster 05:24:14 -51.3 Dark Up 35.0 92.6 Up 05:09:14 - 05:39:14 3904

Manson/Chelan 05:24:15 -51.2 Dark Up 34.8 92.2 Up 05:09:15 - 05:39:15 3892

Entiat 05:24:16 -51.3 Dark Up 34.8 92.0 Up 05:09:16 - 05:39:16 3872

Wenatchee 05:24:16 -51.3 Dark Up 34.7 91.7 Up 05:09:16 - 05:39:16 3850

Ellensburg 05:24:19 -51.4 Dark Up 34.6 91.3 Up 05:09:19 - 05:39:19 3814

Yakima 05:24:19 -51.6 Dark Up 34.6 91.0 Up 05:09:19 - 05:39:19 3775

Toppenish/White Swan 05:24:19 -51.8 Dark Up 34.7 90.9 Up 05:09:19 - 05:39:19 3751

Pasco 05:24:17 -52.6 Dark Up 35.6 91.8 Up 05:09:17 - 05:39:17 3713

Goldendale 05:24:21 -51.7 Dark Up 34.4 90.3 Up 05:09:21 - 05:39:21 3706

The Dalles 05:24:23 -51.6 Dark Up 34.2 89.8 Up 05:09:23 - 05:39:23 3692

George/Umatilla 05:24:19 -52.6 Dark Up 35.4 91.4 Up 05:09:19 - 05:39:19 3685

PNWRO 05:24:17 -52.9 Dark Up 35.7 91.8 Up 05:09:17 - 05:39:17 3684

Maupin 05:24:23 -51.9 Dark Up 34.2 89.6 Up 05:09:23 - 05:39:23 3649

Madras/Culver 05:24:25 -52.0 Dark Up 34.2 89.2 Up 05:09:25 - 05:39:25 3597

Sisters 05:24:26 -51.9 Dark Up 33.9 88.7 Up 05:09:26 - 05:39:26 3574

Redmond 05:24:26 -52.2 Dark Up 34.2 89.0 Up 05:09:26 - 05:39:26 3563

Bend 05:24:26 -52.1 Dark Up 34.1 88.7 Up 05:09:26 - 05:39:26 3545

Oregon Observatory 05:24:27 -52.1 Dark Up 34.0 88.5 Up 05:09:27 - 05:39:27 3531

La Pine/Gilchrist 05:24:27 -52.2 Dark Up 33.9 88.3 Up 05:09:27 - 05:39:27 3512

North Lake 05:24:27 -52.7 Dark Up 34.3 88.5 Up 05:09:27 - 05:39:27 3456

Chiloquin 05:24:31 -52.3 Dark Up 33.6 87.4 Up 05:09:31 - 05:39:31 3410

Paisley 05:24:28 -53.2 Dark Up 34.6 88.3 Up 05:09:28 - 05:39:28 3393

Klamath Falls 05:24:31 -52.5 Dark Up 33.7 87.2 Up 05:09:31 - 05:39:31 3374

Tulelake 05:24:31 -52.8 Dark Up 33.9 87.2 Up 05:09:31 - 05:39:31 3340

Lakeview 05:24:28 -53.5 Dark Up 34.7 88.1 Up 05:09:28 - 05:39:28 3338

Cedarville 05:24:30 -53.9 Dark Up 34.8 87.8 Up 05:09:30 - 05:39:30 3268

Fall River/Burney 05:24:33 -53.2 Dark Up 33.9 86.7 Up 05:09:33 - 05:39:33 3248

Susanville 05:24:33 -53.9 Dark Up 34.4 86.7 Up 05:09:33 - 05:39:33 3167

Greenville 05:24:34 -53.8 Dark Up 34.2 86.3 Up 05:09:34 - 05:39:34 3146

Gimple 05:24:34 -53.8 Dark Up 34.2 86.4 Up 05:09:34 - 05:39:34 3144

Quincy 05:24:34 -53.8 Dark Up 34.2 86.2 Up 05:09:34 - 05:39:34 3125

Portola 05:24:34 -54.2 Dark Up 34.5 86.4 Up 05:09:34 - 05:39:34 3102

Reno 05:24:33 -54.8 Dark Up 35.0 86.6 Up 05:09:33 - 05:39:33 3060

Carson City 05:24:34 -54.9 Dark Up 35.0 86.4 Up 05:09:34 - 05:39:34 3023

Gardnerville 05:24:34 -55.0 Dark Up 35.0 86.2 Up 05:09:34 - 05:39:34 2997

Yerington 05:24:33 -55.4 Dark Up 35.5 86.6 Up 05:09:33 - 05:39:33 2988

Hawthorne 05:24:33 -56.0 Dark Up 35.9 86.6 Up 05:09:33 - 05:39:33 2929

Lee Vining 05:24:35 -55.8 Dark Up 35.5 85.9 Up 05:09:35 - 05:39:35 2882

Tonopah 05:24:30 -57.2 Dark Up 36.9 87.1 Up 05:09:30 - 05:39:30 2849

Niwot 05:23:58 -64.4 Dark Up 46.1 96.7 Up 05:08:58 - 05:38:58 2843

SwRI 05:23:59 -64.4 Dark Up 46.1 96.5 Up 05:08:59 - 05:38:59 2833

Bishop 05:24:34 -56.5 Dark Up 36.0 85.9 Up 05:09:34 - 05:39:34 2804

Beatty 05:24:31 -57.9 Dark Up 37.2 86.5 Up 05:09:31 - 05:39:31 2719

Lone Pine 05:24:35 -57.0 Dark Up 36.2 85.5 Up 05:09:35 - 05:39:35 2717

Indian Springs 05:24:29 -58.8 Dark Up 38.1 86.8 Up 05:09:29 - 05:39:29 2661

CPSLO 05:24:42 -55.3 Dark Up 34.0 83.3 Up 05:09:42 - 05:39:42 2644

Henderson 05:24:29 -59.5 Dark Up 38.6 86.8 Up 05:09:29 - 05:39:29 2591

Searchlight/Boulder City 05:24:30 -59.7 Dark Up 38.6 86.4 Up 05:09:30 - 05:39:30 2529

Patrick 05:24:27 -60.5 Dark Up 39.5 86.9 Up 05:09:27 - 05:39:27 2501

Laughlin/Bullhead City 05:24:30 -60.1 Dark Up 38.9 86.3 Up 05:09:30 - 05:39:30 2490

Kingman/Dolan Springs 05:24:28 -60.5 Dark Up 39.3 86.6 Up 05:09:28 - 05:39:28 2482

Wildwood 05:24:40 -57.2 Dark Up 35.5 83.5 Up 05:09:40 - 05:39:40 2468

Mohave Valley 05:24:30 -60.2 Dark Up 38.9 86.1 Up 05:09:30 - 05:39:30 2461

DCO 05:24:26 -61.2 Dark Up 40.0 87.0 Up 05:09:26 - 05:39:26 2454

Lake Havasu City 05:24:30 -60.5 Dark Up 39.1 85.9 Up 05:09:30 - 05:39:30 2414

Idyllwild 05:24:37 -58.8 Dark Up 37.0 84.1 Up 05:09:37 - 05:39:37 2386

Parker 05:24:30 -60.6 Dark Up 39.1 85.6 Up 05:09:30 - 05:39:30 2376

Blythe 05:24:32 -60.5 Dark Up 38.8 85.1 Up 05:09:32 - 05:39:32 2327

Calipatria 05:24:35 -59.8 Dark Up 38.0 84.2 Up 05:09:35 - 05:39:35 2295

Yuma 05:24:33 -60.7 Dark Up 38.7 84.3 Up 05:09:33 - 05:39:33 2230

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 456826, (2025/12/05 05:21UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 16.26  36
Alhena         06:37:42.8 +16:23:57  1.9  7.36  25
PPM 096264     06:37:27.2 +24:35:27  6.5  0.96  22
PPM 096281     06:37:52.4 +23:36:17  7.7  0.57  22
PPM 096207     06:34:50.2 +23:22:57 10.0  0.39  22
PPM 096213     06:35:04.8 +23:58:54 10.1  0.26  21
456826         06:35:28.7 +23:44:34 15.4        22
Positions are for J2000

Event circumstances last updated at 2019/03/23 22:54:49 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)
Kelowna	05:24:09	-50.7	Dark	Up	35.2	94.1	Up	05:09:09 - 05:39:09	4068
Summerland	05:24:09	-50.6	Dark	Up	35.0	93.7	Up	05:09:09 - 05:39:09	4045
Penticton	05:24:09	-50.7	Dark	Up	35.1	93.8	Up	05:09:09 - 05:39:09	4037
Okanagan Falls	05:24:11	-50.8	Dark	Up	35.1	93.6	Up	05:09:11 - 05:39:11	4019
Oliver	05:24:10	-50.9	Dark	Up	35.1	93.5	Up	05:09:10 - 05:39:10	4003
Anarchist Mountain Observatory	05:24:11	-51.1	Dark	Up	35.3	93.5	Up	05:09:11 - 05:39:11	3983
Oroville	05:24:11	-51.1	Dark	Up	35.2	93.4	Up	05:09:11 - 05:39:11	3978
Tonasket	05:24:11	-51.2	Dark	Up	35.2	93.3	Up	05:09:11 - 05:39:11	3955
Okanogan	05:24:13	-51.3	Dark	Up	35.2	92.9	Up	05:09:13 - 05:39:13	3926
Brewster	05:24:14	-51.3	Dark	Up	35.0	92.6	Up	05:09:14 - 05:39:14	3904
Manson/Chelan	05:24:15	-51.2	Dark	Up	34.8	92.2	Up	05:09:15 - 05:39:15	3892
Entiat	05:24:16	-51.3	Dark	Up	34.8	92.0	Up	05:09:16 - 05:39:16	3872
Wenatchee	05:24:16	-51.3	Dark	Up	34.7	91.7	Up	05:09:16 - 05:39:16	3850
Ellensburg	05:24:19	-51.4	Dark	Up	34.6	91.3	Up	05:09:19 - 05:39:19	3814
Yakima	05:24:19	-51.6	Dark	Up	34.6	91.0	Up	05:09:19 - 05:39:19	3775
Toppenish/White Swan	05:24:19	-51.8	Dark	Up	34.7	90.9	Up	05:09:19 - 05:39:19	3751
Pasco	05:24:17	-52.6	Dark	Up	35.6	91.8	Up	05:09:17 - 05:39:17	3713
Goldendale	05:24:21	-51.7	Dark	Up	34.4	90.3	Up	05:09:21 - 05:39:21	3706
The Dalles	05:24:23	-51.6	Dark	Up	34.2	89.8	Up	05:09:23 - 05:39:23	3692
George/Umatilla	05:24:19	-52.6	Dark	Up	35.4	91.4	Up	05:09:19 - 05:39:19	3685
PNWRO	05:24:17	-52.9	Dark	Up	35.7	91.8	Up	05:09:17 - 05:39:17	3684
Maupin	05:24:23	-51.9	Dark	Up	34.2	89.6	Up	05:09:23 - 05:39:23	3649
Madras/Culver	05:24:25	-52.0	Dark	Up	34.2	89.2	Up	05:09:25 - 05:39:25	3597
Sisters	05:24:26	-51.9	Dark	Up	33.9	88.7	Up	05:09:26 - 05:39:26	3574
Redmond	05:24:26	-52.2	Dark	Up	34.2	89.0	Up	05:09:26 - 05:39:26	3563
Bend	05:24:26	-52.1	Dark	Up	34.1	88.7	Up	05:09:26 - 05:39:26	3545
Oregon Observatory	05:24:27	-52.1	Dark	Up	34.0	88.5	Up	05:09:27 - 05:39:27	3531
La Pine/Gilchrist	05:24:27	-52.2	Dark	Up	33.9	88.3	Up	05:09:27 - 05:39:27	3512
North Lake	05:24:27	-52.7	Dark	Up	34.3	88.5	Up	05:09:27 - 05:39:27	3456
Chiloquin	05:24:31	-52.3	Dark	Up	33.6	87.4	Up	05:09:31 - 05:39:31	3410
Paisley	05:24:28	-53.2	Dark	Up	34.6	88.3	Up	05:09:28 - 05:39:28	3393
Klamath Falls	05:24:31	-52.5	Dark	Up	33.7	87.2	Up	05:09:31 - 05:39:31	3374
Tulelake	05:24:31	-52.8	Dark	Up	33.9	87.2	Up	05:09:31 - 05:39:31	3340
Lakeview	05:24:28	-53.5	Dark	Up	34.7	88.1	Up	05:09:28 - 05:39:28	3338
Cedarville	05:24:30	-53.9	Dark	Up	34.8	87.8	Up	05:09:30 - 05:39:30	3268
Fall River/Burney	05:24:33	-53.2	Dark	Up	33.9	86.7	Up	05:09:33 - 05:39:33	3248
Susanville	05:24:33	-53.9	Dark	Up	34.4	86.7	Up	05:09:33 - 05:39:33	3167
Greenville	05:24:34	-53.8	Dark	Up	34.2	86.3	Up	05:09:34 - 05:39:34	3146
Gimple	05:24:34	-53.8	Dark	Up	34.2	86.4	Up	05:09:34 - 05:39:34	3144
Quincy	05:24:34	-53.8	Dark	Up	34.2	86.2	Up	05:09:34 - 05:39:34	3125
Portola	05:24:34	-54.2	Dark	Up	34.5	86.4	Up	05:09:34 - 05:39:34	3102
Reno	05:24:33	-54.8	Dark	Up	35.0	86.6	Up	05:09:33 - 05:39:33	3060
Carson City	05:24:34	-54.9	Dark	Up	35.0	86.4	Up	05:09:34 - 05:39:34	3023
Gardnerville	05:24:34	-55.0	Dark	Up	35.0	86.2	Up	05:09:34 - 05:39:34	2997
Yerington	05:24:33	-55.4	Dark	Up	35.5	86.6	Up	05:09:33 - 05:39:33	2988
Hawthorne	05:24:33	-56.0	Dark	Up	35.9	86.6	Up	05:09:33 - 05:39:33	2929
Lee Vining	05:24:35	-55.8	Dark	Up	35.5	85.9	Up	05:09:35 - 05:39:35	2882
Tonopah	05:24:30	-57.2	Dark	Up	36.9	87.1	Up	05:09:30 - 05:39:30	2849
Niwot	05:23:58	-64.4	Dark	Up	46.1	96.7	Up	05:08:58 - 05:38:58	2843
SwRI	05:23:59	-64.4	Dark	Up	46.1	96.5	Up	05:08:59 - 05:38:59	2833
Bishop	05:24:34	-56.5	Dark	Up	36.0	85.9	Up	05:09:34 - 05:39:34	2804
Beatty	05:24:31	-57.9	Dark	Up	37.2	86.5	Up	05:09:31 - 05:39:31	2719
Lone Pine	05:24:35	-57.0	Dark	Up	36.2	85.5	Up	05:09:35 - 05:39:35	2717
Indian Springs	05:24:29	-58.8	Dark	Up	38.1	86.8	Up	05:09:29 - 05:39:29	2661
CPSLO	05:24:42	-55.3	Dark	Up	34.0	83.3	Up	05:09:42 - 05:39:42	2644
Henderson	05:24:29	-59.5	Dark	Up	38.6	86.8	Up	05:09:29 - 05:39:29	2591
Searchlight/Boulder City	05:24:30	-59.7	Dark	Up	38.6	86.4	Up	05:09:30 - 05:39:30	2529
Patrick	05:24:27	-60.5	Dark	Up	39.5	86.9	Up	05:09:27 - 05:39:27	2501
Laughlin/Bullhead City	05:24:30	-60.1	Dark	Up	38.9	86.3	Up	05:09:30 - 05:39:30	2490
Kingman/Dolan Springs	05:24:28	-60.5	Dark	Up	39.3	86.6	Up	05:09:28 - 05:39:28	2482
Wildwood	05:24:40	-57.2	Dark	Up	35.5	83.5	Up	05:09:40 - 05:39:40	2468
Mohave Valley	05:24:30	-60.2	Dark	Up	38.9	86.1	Up	05:09:30 - 05:39:30	2461
DCO	05:24:26	-61.2	Dark	Up	40.0	87.0	Up	05:09:26 - 05:39:26	2454
Lake Havasu City	05:24:30	-60.5	Dark	Up	39.1	85.9	Up	05:09:30 - 05:39:30	2414
Idyllwild	05:24:37	-58.8	Dark	Up	37.0	84.1	Up	05:09:37 - 05:39:37	2386
Parker	05:24:30	-60.6	Dark	Up	39.1	85.6	Up	05:09:30 - 05:39:30	2376
Blythe	05:24:32	-60.5	Dark	Up	38.8	85.1	Up	05:09:32 - 05:39:32	2327
Calipatria	05:24:35	-59.8	Dark	Up	38.0	84.2	Up	05:09:35 - 05:39:35	2295
Yuma	05:24:33	-60.7	Dark	Up	38.7	84.3	Up	05:09:33 - 05:39:33	2230