RECON: TNO occultation with 05GF187

Event between 05GF187 and star GA0680:12351995 with event index number of 1081065

Geocentric closest approach at 2022/05/30 06:41:59 UTC

J2000 position of star is 17:28:15.7 -20:17:04
Equinox of date position of star is 17:29:34.9 -20:18:04
Stellar brightness G=15.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 164 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 29.4 AU from the Sun and 28.4 AU from the Earth.
The TNO is moving 22.3 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 376 seconds.
The 1-sigma cross-track error in the shadow position is 1545 km.
The sky-plane scale is 20612.6 km/arcsec.

The TNO has an absolute magnitude Hv=8.1
Diameter=142.6 km assuming a 5% albedo -- 6.4 sec chord
Diameter=58.2 km assuming a 30% albedo -- 2.6 sec chord
Dynamical classification is 3:2E

Star training set for 05GF187, (2022/05/30 06:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.1 -26:28:47  0.9 14.83 175
35Eta Oph      17:11:39.9 -15:45:04  2.6  6.23 166
PPM 266825     17:26:02.6 -21:27:38  6.1  1.43 165
PPM 266907     17:29:36.5 -20:58:49  8.3  0.68 164
PPM 266908     17:29:43.7 -20:22:51  8.9  0.09 164
05GF187        17:29:35.6 -20:18:05 15.3       163
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 2.4 sigma about the mid-time.
The median site spacing is 15.6 km RECON observability=0.5 and success probability=2.3%

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

Sleaford 06:43:09 -16.0 AT Down 15.7 161.1 Really Low 06:28:09 - 06:58:09 4818

Kamloops 06:43:55 -15.7 AT Down 13.1 147.7 Really Low 06:28:55 - 06:58:55 4554

Kelowna 06:43:54 -16.6 AT Down 14.1 148.4 Really Low 06:28:54 - 06:58:54 4533

Peachland 06:43:55 -16.7 AT Down 14.1 148.1 Really Low 06:28:55 - 06:58:55 4523

Summerland 06:43:55 -16.8 AT Down 14.2 148.2 Really Low 06:28:55 - 06:58:55 4518

Penticton 06:43:55 -16.9 AT Down 14.3 148.3 Really Low 06:28:55 - 06:58:55 4517

Oliver 06:43:55 -17.3 AT Down 14.6 148.2 Really Low 06:28:55 - 06:58:55 4501

Anarchist Mountain Observatory 06:43:55 -17.5 AT Down 14.8 148.4 Really Low 06:28:55 - 06:58:55 4497

Tonasket 06:43:56 -17.7 AT Down 15.1 148.3 Really Low 06:28:56 - 06:58:56 4480

Okanogan 06:43:57 -18.0 Dark Down 15.3 148.1 Really Low 06:28:57 - 06:58:57 4462

Brewster 06:43:59 -18.3 Dark Down 15.5 147.9 Really Low 06:28:59 - 06:58:59 4445

Manson/Chelan 06:44:00 -18.4 Dark Down 15.5 147.5 Really Low 06:29:00 - 06:59:00 4429

Wenatchee 06:44:01 -18.8 Dark Down 15.9 147.3 Really Low 06:29:01 - 06:59:01 4402

Victoria 06:44:07 -17.1 AT Down 13.8 144.8 Really Low 06:29:07 - 06:59:07 4400

Ellensburg 06:44:02 -19.1 Dark Down 16.1 147.1 Really Low 06:29:02 - 06:59:02 4378

PNWRO 06:44:00 -20.4 Dark Down 17.6 148.4 Really Low 06:29:00 - 06:59:00 4358

Yakima 06:44:03 -19.5 Dark Down 16.5 147.0 Really Low 06:29:03 - 06:59:03 4357

Toppenish/White Swan 06:44:03 -19.8 Dark Down 16.7 147.1 Really Low 06:29:03 - 06:59:03 4349

Goldendale 06:44:06 -20.2 Dark Down 17.0 146.6 Really Low 06:29:06 - 06:59:06 4313

The Dalles 06:44:07 -20.3 Dark Down 17.1 146.3 Really Low 06:29:07 - 06:59:07 4294

Maupin 06:44:07 -20.7 Dark Down 17.5 146.3 Really Low 06:29:07 - 06:59:07 4274

Dunrhomin 06:43:24 -27.9 Dark Down 27.0 160.4 Low 06:28:24 - 06:58:24 4269

CU-SBO 06:43:24 -28.1 Dark Down 27.2 160.2 Low 06:28:24 - 06:58:24 4253

Sisters 06:44:11 -21.5 Dark Down 18.0 145.7 Really Low 06:29:11 - 06:59:11 4217

Bend 06:44:10 -21.7 Dark Down 18.3 145.9 Really Low 06:29:10 - 06:59:10 4209

Oregon Observatory 06:44:11 -21.9 Dark Down 18.4 145.8 Really Low 06:29:11 - 06:59:11 4197

North Lake 06:44:10 -22.6 Dark Down 19.1 146.1 Really Low 06:29:10 - 06:59:10 4172

Lakeview 06:44:10 -23.7 Dark Down 20.2 146.4 Low 06:29:10 - 06:59:10 4123

Chiloquin 06:44:14 -23.0 Dark Down 19.3 145.1 Really Low 06:29:14 - 06:59:14 4115

Klamath Falls 06:44:15 -23.4 Dark Down 19.6 145.1 Really Low 06:29:15 - 06:59:15 4096

Cedarville 06:44:11 -24.4 Dark Down 20.9 146.4 Low 06:29:11 - 06:59:11 4088

Fall River/Burney 06:44:16 -24.6 Dark Down 20.8 145.2 Low 06:29:16 - 06:59:16 4034

Susanville 06:44:15 -25.3 Dark Down 21.6 145.8 Low 06:29:15 - 06:59:15 4011

Gimple 06:44:16 -25.6 Dark Down 21.7 145.5 Low 06:29:16 - 06:59:16 3990

Greenville 06:44:16 -25.5 Dark Down 21.7 145.4 Low 06:29:16 - 06:59:16 3988

Portola 06:44:15 -26.0 Dark Down 22.2 145.8 Low 06:29:15 - 06:59:15 3978

Quincy 06:44:16 -25.7 Dark Down 21.9 145.4 Low 06:29:16 - 06:59:16 3976

Reno 06:44:13 -26.4 Dark Down 22.7 146.3 Low 06:29:13 - 06:59:13 3975

Yerington 06:44:12 -27.1 Dark Down 23.4 146.8 Low 06:29:12 - 06:59:12 3954

Carson City 06:44:14 -26.7 Dark Down 23.0 146.3 Low 06:29:14 - 06:59:14 3953

Gardnerville 06:44:14 -27.0 Dark Down 23.2 146.2 Low 06:29:14 - 06:59:14 3939

Hawthorne 06:44:11 -27.6 Dark Down 24.0 147.2 Low 06:29:11 - 06:59:11 3935

Tonopah 06:44:07 -28.4 Dark Down 25.0 148.3 Low 06:29:07 - 06:59:07 3934

Lee Vining 06:44:13 -28.1 Dark Down 24.3 146.6 Low 06:29:13 - 06:59:13 3890

Beatty 06:44:07 -29.6 Dark Down 26.2 148.5 Low 06:29:07 - 06:59:07 3868

Indian Springs 06:44:04 -30.2 Dark Down 26.9 149.4 Low 06:29:04 - 06:59:04 3868

Bishop 06:44:12 -28.8 Dark Down 25.1 147.1 Low 06:29:12 - 06:59:12 3866

Henderson 06:44:02 -30.8 Dark Down 27.6 149.9 Low 06:29:02 - 06:59:02 3846

Patrick 06:43:59 -31.6 Dark Down 28.6 150.8 Low 06:28:59 - 06:58:59 3826

Kingman/Dolan Springs 06:44:00 -31.8 Dark Down 28.8 150.6 Low 06:29:00 - 06:59:00 3808

Laughlin/Bullhead City 06:44:02 -31.7 Dark Down 28.6 150.1 Low 06:29:02 - 06:59:02 3796

Mohave Valley 06:44:02 -32.0 Dark Down 28.8 150.0 Low 06:29:02 - 06:59:02 3778

Lake Havasu City 06:44:02 -32.5 Dark Down 29.3 150.1 Low 06:29:02 - 06:59:02 3755

George/Scottsdale 06:43:54 -33.7 Dark Down 30.9 152.3 Up 06:28:54 - 06:58:54 3749

Parker 06:44:02 -32.8 Dark Down 29.6 150.0 Low 06:29:02 - 06:59:02 3732

Idyllwild 06:44:11 -32.7 Dark Down 28.9 147.6 Low 06:29:11 - 06:59:11 3657

Wildwood 06:44:17 -31.9 Dark Down 27.8 146.0 Low 06:29:17 - 06:59:17 3641

Calipatria 06:44:07 -33.5 Dark Down 29.9 148.6 Low 06:29:07 - 06:59:07 3637

Yuma 06:44:05 -34.1 Dark Down 30.7 149.3 Up 06:29:05 - 06:59:05 3624

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 05GF187, (2022/05/30 06:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 14.83 175
35Eta Oph      17:10:22.7 -15:43:29  2.6  6.23 166
PPM 266825     17:24:42.0 -21:26:30  6.1  1.43 165
PPM 266907     17:28:16.2 -20:57:49  8.3  0.68 164
PPM 266908     17:28:23.8 -20:21:50  8.9  0.09 164
05GF187        17:28:15.7 -20:17:04 15.3       164
Positions are for J2000

Event circumstances last updated at 2022/03/13 02:13:22 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)
Sleaford	06:43:09	-16.0	AT	Down	15.7	161.1	Really Low	06:28:09 - 06:58:09	4818
Kamloops	06:43:55	-15.7	AT	Down	13.1	147.7	Really Low	06:28:55 - 06:58:55	4554
Kelowna	06:43:54	-16.6	AT	Down	14.1	148.4	Really Low	06:28:54 - 06:58:54	4533
Peachland	06:43:55	-16.7	AT	Down	14.1	148.1	Really Low	06:28:55 - 06:58:55	4523
Summerland	06:43:55	-16.8	AT	Down	14.2	148.2	Really Low	06:28:55 - 06:58:55	4518
Penticton	06:43:55	-16.9	AT	Down	14.3	148.3	Really Low	06:28:55 - 06:58:55	4517
Oliver	06:43:55	-17.3	AT	Down	14.6	148.2	Really Low	06:28:55 - 06:58:55	4501
Anarchist Mountain Observatory	06:43:55	-17.5	AT	Down	14.8	148.4	Really Low	06:28:55 - 06:58:55	4497
Tonasket	06:43:56	-17.7	AT	Down	15.1	148.3	Really Low	06:28:56 - 06:58:56	4480
Okanogan	06:43:57	-18.0	Dark	Down	15.3	148.1	Really Low	06:28:57 - 06:58:57	4462
Brewster	06:43:59	-18.3	Dark	Down	15.5	147.9	Really Low	06:28:59 - 06:58:59	4445
Manson/Chelan	06:44:00	-18.4	Dark	Down	15.5	147.5	Really Low	06:29:00 - 06:59:00	4429
Wenatchee	06:44:01	-18.8	Dark	Down	15.9	147.3	Really Low	06:29:01 - 06:59:01	4402
Victoria	06:44:07	-17.1	AT	Down	13.8	144.8	Really Low	06:29:07 - 06:59:07	4400
Ellensburg	06:44:02	-19.1	Dark	Down	16.1	147.1	Really Low	06:29:02 - 06:59:02	4378
PNWRO	06:44:00	-20.4	Dark	Down	17.6	148.4	Really Low	06:29:00 - 06:59:00	4358
Yakima	06:44:03	-19.5	Dark	Down	16.5	147.0	Really Low	06:29:03 - 06:59:03	4357
Toppenish/White Swan	06:44:03	-19.8	Dark	Down	16.7	147.1	Really Low	06:29:03 - 06:59:03	4349
Goldendale	06:44:06	-20.2	Dark	Down	17.0	146.6	Really Low	06:29:06 - 06:59:06	4313
The Dalles	06:44:07	-20.3	Dark	Down	17.1	146.3	Really Low	06:29:07 - 06:59:07	4294
Maupin	06:44:07	-20.7	Dark	Down	17.5	146.3	Really Low	06:29:07 - 06:59:07	4274
Dunrhomin	06:43:24	-27.9	Dark	Down	27.0	160.4	Low	06:28:24 - 06:58:24	4269
CU-SBO	06:43:24	-28.1	Dark	Down	27.2	160.2	Low	06:28:24 - 06:58:24	4253
Sisters	06:44:11	-21.5	Dark	Down	18.0	145.7	Really Low	06:29:11 - 06:59:11	4217
Bend	06:44:10	-21.7	Dark	Down	18.3	145.9	Really Low	06:29:10 - 06:59:10	4209
Oregon Observatory	06:44:11	-21.9	Dark	Down	18.4	145.8	Really Low	06:29:11 - 06:59:11	4197
North Lake	06:44:10	-22.6	Dark	Down	19.1	146.1	Really Low	06:29:10 - 06:59:10	4172
Lakeview	06:44:10	-23.7	Dark	Down	20.2	146.4	Low	06:29:10 - 06:59:10	4123
Chiloquin	06:44:14	-23.0	Dark	Down	19.3	145.1	Really Low	06:29:14 - 06:59:14	4115
Klamath Falls	06:44:15	-23.4	Dark	Down	19.6	145.1	Really Low	06:29:15 - 06:59:15	4096
Cedarville	06:44:11	-24.4	Dark	Down	20.9	146.4	Low	06:29:11 - 06:59:11	4088
Fall River/Burney	06:44:16	-24.6	Dark	Down	20.8	145.2	Low	06:29:16 - 06:59:16	4034
Susanville	06:44:15	-25.3	Dark	Down	21.6	145.8	Low	06:29:15 - 06:59:15	4011
Gimple	06:44:16	-25.6	Dark	Down	21.7	145.5	Low	06:29:16 - 06:59:16	3990
Greenville	06:44:16	-25.5	Dark	Down	21.7	145.4	Low	06:29:16 - 06:59:16	3988
Portola	06:44:15	-26.0	Dark	Down	22.2	145.8	Low	06:29:15 - 06:59:15	3978
Quincy	06:44:16	-25.7	Dark	Down	21.9	145.4	Low	06:29:16 - 06:59:16	3976
Reno	06:44:13	-26.4	Dark	Down	22.7	146.3	Low	06:29:13 - 06:59:13	3975
Yerington	06:44:12	-27.1	Dark	Down	23.4	146.8	Low	06:29:12 - 06:59:12	3954
Carson City	06:44:14	-26.7	Dark	Down	23.0	146.3	Low	06:29:14 - 06:59:14	3953
Gardnerville	06:44:14	-27.0	Dark	Down	23.2	146.2	Low	06:29:14 - 06:59:14	3939
Hawthorne	06:44:11	-27.6	Dark	Down	24.0	147.2	Low	06:29:11 - 06:59:11	3935
Tonopah	06:44:07	-28.4	Dark	Down	25.0	148.3	Low	06:29:07 - 06:59:07	3934
Lee Vining	06:44:13	-28.1	Dark	Down	24.3	146.6	Low	06:29:13 - 06:59:13	3890
Beatty	06:44:07	-29.6	Dark	Down	26.2	148.5	Low	06:29:07 - 06:59:07	3868
Indian Springs	06:44:04	-30.2	Dark	Down	26.9	149.4	Low	06:29:04 - 06:59:04	3868
Bishop	06:44:12	-28.8	Dark	Down	25.1	147.1	Low	06:29:12 - 06:59:12	3866
Henderson	06:44:02	-30.8	Dark	Down	27.6	149.9	Low	06:29:02 - 06:59:02	3846
Patrick	06:43:59	-31.6	Dark	Down	28.6	150.8	Low	06:28:59 - 06:58:59	3826
Kingman/Dolan Springs	06:44:00	-31.8	Dark	Down	28.8	150.6	Low	06:29:00 - 06:59:00	3808
Laughlin/Bullhead City	06:44:02	-31.7	Dark	Down	28.6	150.1	Low	06:29:02 - 06:59:02	3796
Mohave Valley	06:44:02	-32.0	Dark	Down	28.8	150.0	Low	06:29:02 - 06:59:02	3778
Lake Havasu City	06:44:02	-32.5	Dark	Down	29.3	150.1	Low	06:29:02 - 06:59:02	3755
George/Scottsdale	06:43:54	-33.7	Dark	Down	30.9	152.3	Up	06:28:54 - 06:58:54	3749
Parker	06:44:02	-32.8	Dark	Down	29.6	150.0	Low	06:29:02 - 06:59:02	3732
Idyllwild	06:44:11	-32.7	Dark	Down	28.9	147.6	Low	06:29:11 - 06:59:11	3657
Wildwood	06:44:17	-31.9	Dark	Down	27.8	146.0	Low	06:29:17 - 06:59:17	3641
Calipatria	06:44:07	-33.5	Dark	Down	29.9	148.6	Low	06:29:07 - 06:59:07	3637
Yuma	06:44:05	-34.1	Dark	Down	30.7	149.3	Up	06:29:05 - 06:59:05	3624