RECON: TNO occultation with 612167

Event between (612167) 00OU69 and star GA0740:32080540 with event index number of 2808535

Geocentric closest approach at 2022/08/29 05:23:57 UTC

J2000 position of star is 22:13:42.9 -15:36:07
Equinox of date position of star is 22:14:55.3 -15:29:26
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 152 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=22.9

[RECON map]
TNO is 41.2 AU from the Sun and 40.2 AU from the Earth.
The TNO is moving 24.5 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 129 seconds.
The 1-sigma cross-track error in the shadow position is 1908 km.
The sky-plane scale is 29172.2 km/arcsec.

The TNO has an absolute magnitude Hv=6.8
Diameter=264.2 km assuming a 5% albedo -- 10.8 sec chord
Diameter=107.9 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is CLASSICAL

Star training set for 612167, (2022/08/29 05:24UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:53.9 -29:30:06  1.2 17.28 151
PPM 239990     22:15:51.7 -15:42:27  6.5  0.31 152
PPM 239992     22:15:57.8 -15:35:19  7.9  0.27 152
PPM 239985     22:15:43.9 -15:27:51  9.6  0.19 152
612167         22:14:56.3 -15:29:20 16.8       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 15.7 km RECON observability=0.7 and success probability=10.3%

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

Kamloops 05:24:06 -20.9 Dark Down 16.8 144.4 Really Low 05:12:52 - 05:35:20 1613

Kelowna 05:24:06 -21.8 Dark Down 17.8 145.1 Really Low 05:12:52 - 05:35:20 1580

Peachland 05:24:07 -21.8 Dark Down 17.8 144.8 Really Low 05:12:53 - 05:35:21 1580

Victoria 05:24:19 -21.1 Dark Down 17.4 141.2 Really Low 05:13:05 - 05:35:33 1576

Summerland 05:24:07 -22.0 Dark Down 18.0 144.8 Really Low 05:12:53 - 05:35:21 1574

Penticton 05:24:07 -22.1 Dark Down 18.1 144.9 Really Low 05:12:53 - 05:35:21 1571

Oliver 05:24:08 -22.3 Dark Down 18.4 144.9 Really Low 05:12:54 - 05:35:22 1560

Anarchist Mountain Observatory 05:24:08 -22.5 Dark Down 18.6 145.0 Really Low 05:12:54 - 05:35:22 1553

Tonasket 05:24:09 -22.7 Dark Down 18.8 144.9 Really Low 05:12:55 - 05:35:23 1543

Okanogan 05:24:10 -22.9 Dark Down 19.0 144.7 Really Low 05:12:56 - 05:35:24 1534

Brewster 05:24:11 -23.0 Dark Down 19.2 144.5 Really Low 05:12:57 - 05:35:25 1527

Manson/Chelan 05:24:12 -23.0 Dark Down 19.2 144.1 Really Low 05:12:58 - 05:35:26 1524

Wenatchee 05:24:15 -23.3 Dark Down 19.5 143.8 Really Low 05:13:01 - 05:35:29 1509

Ellensburg 05:24:16 -23.5 Dark Down 19.8 143.5 Really Low 05:13:02 - 05:35:30 1498

Yakima 05:24:18 -23.8 Dark Down 20.1 143.4 Low 05:13:04 - 05:35:32 1483

Toppenish/White Swan 05:24:18 -24.0 Dark Down 20.3 143.5 Low 05:13:04 - 05:35:32 1474

Sleaford 05:23:28 -24.8 Dark Down 19.9 158.4 Really Low 05:12:14 - 05:34:42 1466

Goldendale 05:24:20 -24.2 Dark Down 20.6 143.0 Low 05:13:06 - 05:35:34 1458

The Dalles 05:24:21 -24.2 Dark Down 20.6 142.7 Low 05:13:07 - 05:35:35 1453

PNWRO 05:24:14 -25.0 Dark Down 21.2 144.9 Low 05:13:00 - 05:35:28 1443

Maupin 05:24:22 -24.6 Dark Down 21.0 142.7 Low 05:13:08 - 05:35:36 1436

Sisters 05:24:26 -24.9 Dark Down 21.5 142.0 Low 05:13:12 - 05:35:40 1407

Bend 05:24:26 -25.2 Dark Down 21.8 142.2 Low 05:13:12 - 05:35:40 1395

Oregon Observatory 05:24:26 -25.3 Dark Down 21.9 142.0 Low 05:13:12 - 05:35:40 1390

North Lake 05:24:27 -26.0 Dark Down 22.6 142.4 Low 05:13:13 - 05:35:41 1357

Chiloquin 05:24:31 -26.0 Dark Down 22.7 141.3 Low 05:13:17 - 05:35:45 1339

Klamath Falls 05:24:31 -26.3 Dark Down 23.0 141.3 Low 05:13:17 - 05:35:45 1323

Lakeview 05:24:28 -27.1 Dark Down 23.7 142.6 Low 05:13:14 - 05:35:42 1306

Cedarville 05:24:29 -27.6 Dark Down 24.3 142.6 Low 05:13:15 - 05:35:43 1274

Fall River/Burney 05:24:34 -27.3 Dark Down 24.1 141.4 Low 05:13:20 - 05:35:48 1266

Susanville 05:24:33 -28.2 Dark Down 25.0 141.9 Low 05:13:19 - 05:35:47 1229

Greenville 05:24:35 -28.2 Dark Down 25.1 141.5 Low 05:13:21 - 05:35:49 1219

Gimple 05:24:35 -28.2 Dark Down 25.1 141.6 Low 05:13:21 - 05:35:49 1218

Quincy 05:24:36 -28.3 Dark Down 25.2 141.5 Low 05:13:22 - 05:35:50 1209

Portola 05:24:34 -28.7 Dark Down 25.5 141.9 Low 05:13:20 - 05:35:48 1198

Reno 05:24:33 -29.2 Dark Down 26.1 142.4 Low 05:13:19 - 05:35:47 1177

Carson City 05:24:34 -29.5 Dark Down 26.4 142.3 Low 05:13:20 - 05:35:48 1159

Gardnerville 05:24:34 -29.7 Dark Down 26.6 142.3 Low 05:13:20 - 05:35:48 1147

Yerington 05:24:33 -30.0 Dark Down 26.8 142.8 Low 05:13:19 - 05:35:47 1142

Hawthorne 05:24:32 -30.6 Dark Down 27.4 143.2 Low 05:13:18 - 05:35:46 1111

Lee Vining 05:24:35 -30.7 Dark Down 27.7 142.6 Low 05:13:21 - 05:35:49 1090

Tonopah 05:24:29 -31.7 Dark Down 28.5 144.4 Low 05:13:15 - 05:35:43 1068

Bishop 05:24:34 -31.6 Dark Down 28.5 143.0 Low 05:13:20 - 05:35:48 1048

Beatty 05:24:30 -32.8 Dark Down 29.6 144.5 Low 05:13:16 - 05:35:44 1000

Dunrhomin 05:23:48 -35.5 Dark Down 31.1 157.1 Up 05:12:34 - 05:35:02 972

Indian Springs 05:24:28 -33.6 Dark Down 30.4 145.4 Up 05:13:14 - 05:35:42 967

CU-SBO 05:23:49 -35.7 Dark Down 31.3 157.0 Up 05:12:35 - 05:35:03 961

Henderson 05:24:27 -34.4 Dark Down 31.1 145.9 Up 05:13:13 - 05:35:41 926

Patrick 05:24:25 -35.5 Dark Down 32.2 146.8 Up 05:13:11 - 05:35:39 873

Laughlin/Bullhead City 05:24:28 -35.3 Dark Down 32.0 146.0 Up 05:13:14 - 05:35:42 870

Wildwood 05:24:43 -33.7 Dark Down 31.0 141.7 Up 05:13:29 - 05:35:57 870

Kingman/Dolan Springs 05:24:26 -35.5 Dark Down 32.3 146.5 Up 05:13:12 - 05:35:40 863

Mohave Valley 05:24:28 -35.5 Dark Down 32.3 145.9 Up 05:13:14 - 05:35:42 854

Lake Havasu City 05:24:29 -35.9 Dark Down 32.7 146.0 Up 05:13:15 - 05:35:43 827

Idyllwild 05:24:38 -35.1 Dark Down 32.2 143.4 Up 05:13:24 - 05:35:52 822

Parker 05:24:29 -36.2 Dark Down 33.0 145.9 Up 05:13:15 - 05:35:43 806

Calipatria 05:24:35 -36.2 Dark Down 33.3 144.3 Up 05:13:21 - 05:35:49 766

George/Scottsdale 05:24:22 -37.8 Dark Down 34.5 148.2 Up 05:13:08 - 05:35:36 739

Yuma 05:24:33 -37.1 Dark Down 34.1 145.1 Up 05:13:19 - 05:35:47 725

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 612167, (2022/08/29 05:24UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 17.28 151
PPM 239990     22:14:38.2 -15:49:15  6.5  0.31 152
PPM 239992     22:14:44.4 -15:42:06  7.9  0.27 152
PPM 239985     22:14:30.6 -15:34:39  9.6  0.19 152
612167         22:13:42.9 -15:36:07 16.8       152
Positions are for J2000

Event circumstances last updated at 2022/05/03 00:35:45 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)
Kamloops	05:24:06	-20.9	Dark	Down	16.8	144.4	Really Low	05:12:52 - 05:35:20	1613
Kelowna	05:24:06	-21.8	Dark	Down	17.8	145.1	Really Low	05:12:52 - 05:35:20	1580
Peachland	05:24:07	-21.8	Dark	Down	17.8	144.8	Really Low	05:12:53 - 05:35:21	1580
Victoria	05:24:19	-21.1	Dark	Down	17.4	141.2	Really Low	05:13:05 - 05:35:33	1576
Summerland	05:24:07	-22.0	Dark	Down	18.0	144.8	Really Low	05:12:53 - 05:35:21	1574
Penticton	05:24:07	-22.1	Dark	Down	18.1	144.9	Really Low	05:12:53 - 05:35:21	1571
Oliver	05:24:08	-22.3	Dark	Down	18.4	144.9	Really Low	05:12:54 - 05:35:22	1560
Anarchist Mountain Observatory	05:24:08	-22.5	Dark	Down	18.6	145.0	Really Low	05:12:54 - 05:35:22	1553
Tonasket	05:24:09	-22.7	Dark	Down	18.8	144.9	Really Low	05:12:55 - 05:35:23	1543
Okanogan	05:24:10	-22.9	Dark	Down	19.0	144.7	Really Low	05:12:56 - 05:35:24	1534
Brewster	05:24:11	-23.0	Dark	Down	19.2	144.5	Really Low	05:12:57 - 05:35:25	1527
Manson/Chelan	05:24:12	-23.0	Dark	Down	19.2	144.1	Really Low	05:12:58 - 05:35:26	1524
Wenatchee	05:24:15	-23.3	Dark	Down	19.5	143.8	Really Low	05:13:01 - 05:35:29	1509
Ellensburg	05:24:16	-23.5	Dark	Down	19.8	143.5	Really Low	05:13:02 - 05:35:30	1498
Yakima	05:24:18	-23.8	Dark	Down	20.1	143.4	Low	05:13:04 - 05:35:32	1483
Toppenish/White Swan	05:24:18	-24.0	Dark	Down	20.3	143.5	Low	05:13:04 - 05:35:32	1474
Sleaford	05:23:28	-24.8	Dark	Down	19.9	158.4	Really Low	05:12:14 - 05:34:42	1466
Goldendale	05:24:20	-24.2	Dark	Down	20.6	143.0	Low	05:13:06 - 05:35:34	1458
The Dalles	05:24:21	-24.2	Dark	Down	20.6	142.7	Low	05:13:07 - 05:35:35	1453
PNWRO	05:24:14	-25.0	Dark	Down	21.2	144.9	Low	05:13:00 - 05:35:28	1443
Maupin	05:24:22	-24.6	Dark	Down	21.0	142.7	Low	05:13:08 - 05:35:36	1436
Sisters	05:24:26	-24.9	Dark	Down	21.5	142.0	Low	05:13:12 - 05:35:40	1407
Bend	05:24:26	-25.2	Dark	Down	21.8	142.2	Low	05:13:12 - 05:35:40	1395
Oregon Observatory	05:24:26	-25.3	Dark	Down	21.9	142.0	Low	05:13:12 - 05:35:40	1390
North Lake	05:24:27	-26.0	Dark	Down	22.6	142.4	Low	05:13:13 - 05:35:41	1357
Chiloquin	05:24:31	-26.0	Dark	Down	22.7	141.3	Low	05:13:17 - 05:35:45	1339
Klamath Falls	05:24:31	-26.3	Dark	Down	23.0	141.3	Low	05:13:17 - 05:35:45	1323
Lakeview	05:24:28	-27.1	Dark	Down	23.7	142.6	Low	05:13:14 - 05:35:42	1306
Cedarville	05:24:29	-27.6	Dark	Down	24.3	142.6	Low	05:13:15 - 05:35:43	1274
Fall River/Burney	05:24:34	-27.3	Dark	Down	24.1	141.4	Low	05:13:20 - 05:35:48	1266
Susanville	05:24:33	-28.2	Dark	Down	25.0	141.9	Low	05:13:19 - 05:35:47	1229
Greenville	05:24:35	-28.2	Dark	Down	25.1	141.5	Low	05:13:21 - 05:35:49	1219
Gimple	05:24:35	-28.2	Dark	Down	25.1	141.6	Low	05:13:21 - 05:35:49	1218
Quincy	05:24:36	-28.3	Dark	Down	25.2	141.5	Low	05:13:22 - 05:35:50	1209
Portola	05:24:34	-28.7	Dark	Down	25.5	141.9	Low	05:13:20 - 05:35:48	1198
Reno	05:24:33	-29.2	Dark	Down	26.1	142.4	Low	05:13:19 - 05:35:47	1177
Carson City	05:24:34	-29.5	Dark	Down	26.4	142.3	Low	05:13:20 - 05:35:48	1159
Gardnerville	05:24:34	-29.7	Dark	Down	26.6	142.3	Low	05:13:20 - 05:35:48	1147
Yerington	05:24:33	-30.0	Dark	Down	26.8	142.8	Low	05:13:19 - 05:35:47	1142
Hawthorne	05:24:32	-30.6	Dark	Down	27.4	143.2	Low	05:13:18 - 05:35:46	1111
Lee Vining	05:24:35	-30.7	Dark	Down	27.7	142.6	Low	05:13:21 - 05:35:49	1090
Tonopah	05:24:29	-31.7	Dark	Down	28.5	144.4	Low	05:13:15 - 05:35:43	1068
Bishop	05:24:34	-31.6	Dark	Down	28.5	143.0	Low	05:13:20 - 05:35:48	1048
Beatty	05:24:30	-32.8	Dark	Down	29.6	144.5	Low	05:13:16 - 05:35:44	1000
Dunrhomin	05:23:48	-35.5	Dark	Down	31.1	157.1	Up	05:12:34 - 05:35:02	972
Indian Springs	05:24:28	-33.6	Dark	Down	30.4	145.4	Up	05:13:14 - 05:35:42	967
CU-SBO	05:23:49	-35.7	Dark	Down	31.3	157.0	Up	05:12:35 - 05:35:03	961
Henderson	05:24:27	-34.4	Dark	Down	31.1	145.9	Up	05:13:13 - 05:35:41	926
Patrick	05:24:25	-35.5	Dark	Down	32.2	146.8	Up	05:13:11 - 05:35:39	873
Laughlin/Bullhead City	05:24:28	-35.3	Dark	Down	32.0	146.0	Up	05:13:14 - 05:35:42	870
Wildwood	05:24:43	-33.7	Dark	Down	31.0	141.7	Up	05:13:29 - 05:35:57	870
Kingman/Dolan Springs	05:24:26	-35.5	Dark	Down	32.3	146.5	Up	05:13:12 - 05:35:40	863
Mohave Valley	05:24:28	-35.5	Dark	Down	32.3	145.9	Up	05:13:14 - 05:35:42	854
Lake Havasu City	05:24:29	-35.9	Dark	Down	32.7	146.0	Up	05:13:15 - 05:35:43	827
Idyllwild	05:24:38	-35.1	Dark	Down	32.2	143.4	Up	05:13:24 - 05:35:52	822
Parker	05:24:29	-36.2	Dark	Down	33.0	145.9	Up	05:13:15 - 05:35:43	806
Calipatria	05:24:35	-36.2	Dark	Down	33.3	144.3	Up	05:13:21 - 05:35:49	766
George/Scottsdale	05:24:22	-37.8	Dark	Down	34.5	148.2	Up	05:13:08 - 05:35:36	739
Yuma	05:24:33	-37.1	Dark	Down	34.1	145.1	Up	05:13:19 - 05:35:47	725