RECON: TNO occultation with 04QQ26

Event between 04QQ26 and star GA0880:07552941 with event index number of 293732

Geocentric closest approach at 2020/05/20 08:04:44 UTC

J2000 position of star is 18:17:14.0 -01:44:57
Equinox of date position of star is 18:18:14.5 -01:44:27
Stellar brightness G=16.5, use SENSEUP=128
Star is 118 degrees from the moon. Moon is 6% illuminated.
TNO apparent brightness V=23.0

[RECON map]
TNO is 21.9 AU from the Sun and 21.2 AU from the Earth.
The TNO is moving 18.8 km/sec on the sky relative to the star, or, 4.4 arcsec/hr.
The 1-sigma error in the time of the event is 977 seconds.
The 1-sigma cross-track error in the shadow position is 5484 km.
The sky-plane scale is 15347.7 km/arcsec.

The TNO has an absolute magnitude Hv=9.5
Diameter=74.5 km assuming a 5% albedo -- 4.0 sec chord
Diameter=30.4 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR

Star training set for 04QQ26, (2020/05/20 08:05UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.6 -26:28:32  0.9 35.77 142
60Bet Oph      17:44:28.8 +04:33:37  2.8 10.54 125
PPM 201570     18:17:57.2 -03:00:01  5.9  1.26 118
PPM 180286     18:18:46.2 -01:27:20  7.7  0.31 118
PPM 180282     18:18:13.9 -01:48:51  9.2  0.08 118
PPM 180283     18:18:22.3 -01:43:07 10.3  0.03 118
04QQ26         18:18:17.5 -01:44:25 16.5       118
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 0.9 sigma about the mid-time.
The median site spacing is 18.4 km RECON observability=1.0 and success probability=5.6%

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

Kelowna 08:08:04 -19.9 Dark Down 31.0 140.3 Up 07:53:04 - 08:23:04 6410

Summerland 08:08:06 -20.2 Dark Down 31.1 139.9 Up 07:53:06 - 08:23:06 6380

Penticton 08:08:05 -20.3 Dark Down 31.2 140.0 Up 07:53:05 - 08:23:05 6377

Okanagan Falls 08:08:06 -20.5 Dark Down 31.4 139.9 Up 07:53:06 - 08:23:06 6361

Oliver 08:08:06 -20.7 Dark Down 31.5 139.8 Up 07:53:06 - 08:23:06 6348

Anarchist Mountain Observatory 08:08:05 -20.8 Dark Down 31.7 140.0 Up 07:53:05 - 08:23:05 6338

Oroville 08:08:05 -20.9 Dark Down 31.7 139.8 Up 07:53:05 - 08:23:05 6331

Tonasket 08:08:08 -21.1 Dark Down 31.9 139.8 Up 07:53:08 - 08:23:08 6312

Okanogan 08:08:06 -21.5 Dark Down 32.1 139.5 Up 07:53:06 - 08:23:06 6281

Brewster 08:08:08 -21.7 Dark Down 32.2 139.1 Up 07:53:08 - 08:23:08 6254

Manson/Chelan 08:08:10 -22.0 Dark Down 32.2 138.7 Up 07:53:10 - 08:23:10 6228

Entiat 08:08:10 -22.2 Dark Down 32.4 138.5 Up 07:53:10 - 08:23:10 6208

Wenatchee 08:08:10 -22.5 Dark Down 32.5 138.3 Up 07:53:10 - 08:23:10 6185

Ellensburg 08:08:11 -22.9 Dark Down 32.7 137.9 Up 07:53:11 - 08:23:11 6145

Pasco 08:08:07 -23.6 Dark Down 33.9 139.1 Up 07:53:07 - 08:23:07 6113

Yakima 08:08:11 -23.3 Dark Down 33.0 137.7 Up 07:53:11 - 08:23:11 6110

PNWRO 08:08:07 -23.8 Dark Down 34.2 139.2 Up 07:53:07 - 08:23:07 6097

Toppenish/White Swan 08:08:11 -23.5 Dark Down 33.2 137.8 Up 07:53:11 - 08:23:11 6095

George/Umatilla 08:08:08 -23.9 Dark Down 34.1 138.7 Up 07:53:08 - 08:23:08 6080

Goldendale 08:08:13 -24.1 Dark Down 33.5 137.1 Up 07:53:13 - 08:23:13 6038

The Dalles 08:08:15 -24.3 Dark Down 33.4 136.6 Up 07:53:15 - 08:23:15 6011

Maupin 08:08:15 -24.7 Dark Down 33.8 136.5 Up 07:53:15 - 08:23:15 5977

Niwot 08:07:19 -27.6 Dark Down 44.6 152.5 Up 07:52:19 - 08:22:19 5935

Madras/Culver 08:08:15 -25.2 Dark Down 34.2 136.2 Up 07:53:15 - 08:23:15 5928

SwRI 08:07:20 -27.7 Dark Down 44.7 152.3 Up 07:52:20 - 08:22:20 5923

Redmond 08:08:16 -25.6 Dark Down 34.4 136.0 Up 07:53:16 - 08:23:16 5896

Sisters 08:08:18 -25.6 Dark Down 34.2 135.6 Up 07:53:18 - 08:23:18 5888

Bend 08:08:16 -25.8 Dark Down 34.5 135.8 Up 07:53:16 - 08:23:16 5873

Oregon Observatory 08:08:17 -26.0 Dark Down 34.6 135.6 Up 07:53:17 - 08:23:17 5855

La Pine/Gilchrist 08:08:17 -26.2 Dark Down 34.7 135.4 Up 07:53:17 - 08:23:17 5836

North Lake 08:08:16 -26.6 Dark Down 35.3 135.8 Up 07:53:16 - 08:23:16 5811

Paisley 08:08:15 -27.2 Dark Down 35.9 135.9 Up 07:53:15 - 08:23:15 5770

Lakeview 08:08:15 -27.7 Dark Down 36.3 135.9 Up 07:53:15 - 08:23:15 5729

Chiloquin 08:08:19 -27.3 Dark Down 35.3 134.5 Up 07:53:19 - 08:23:19 5728

Klamath Falls 08:08:19 -27.7 Dark Down 35.6 134.4 Up 07:53:19 - 08:23:19 5699

Tulelake 08:08:18 -27.9 Dark Down 35.9 134.6 Up 07:53:18 - 08:23:18 5682

Cedarville 08:08:14 -28.3 Dark Down 36.9 135.7 Up 07:53:14 - 08:23:14 5674

Fall River/Burney 08:08:19 -28.8 Dark Down 36.6 134.2 Up 07:53:19 - 08:23:19 5601

Susanville 08:08:17 -29.4 Dark Down 37.4 134.6 Up 07:53:17 - 08:23:17 5561

Gimple 08:08:18 -29.7 Dark Down 37.5 134.2 Up 07:53:18 - 08:23:18 5531

Greenville 08:08:18 -29.7 Dark Down 37.5 134.1 Up 07:53:18 - 08:23:18 5529

Portola 08:08:16 -30.0 Dark Down 38.0 134.5 Up 07:53:16 - 08:23:16 5510

Quincy 08:08:18 -29.9 Dark Down 37.6 134.0 Up 07:53:18 - 08:23:18 5510

Reno 08:08:14 -30.3 Dark Down 38.5 135.0 Up 07:53:14 - 08:23:14 5502

Carson City 08:08:14 -30.6 Dark Down 38.8 134.8 Up 07:53:14 - 08:23:14 5469

Yerington 08:08:12 -30.8 Dark Down 39.2 135.4 Up 07:53:12 - 08:23:12 5467

Gardnerville 08:08:14 -30.9 Dark Down 39.0 134.7 Up 07:53:14 - 08:23:14 5448

Hawthorne 08:08:11 -31.2 Dark Down 39.9 135.7 Up 07:53:11 - 08:23:11 5438

Tonopah 08:08:05 -31.6 Dark Down 41.0 136.9 Up 07:53:05 - 08:23:05 5431

Lee Vining 08:08:12 -31.8 Dark Down 40.0 134.8 Up 07:53:12 - 08:23:12 5373

Bishop 08:08:10 -32.4 Dark Down 40.8 135.2 Up 07:53:10 - 08:23:10 5335

Beatty 08:08:04 -32.7 Dark Down 42.0 136.8 Up 07:53:04 - 08:23:04 5335

Indian Springs 08:08:00 -32.9 Dark Down 42.9 137.8 Up 07:53:00 - 08:23:00 5333

Henderson 08:07:57 -33.4 Dark Down 43.6 138.2 Up 07:52:57 - 08:22:57 5302

Patrick 08:07:53 -33.8 Dark Down 44.7 139.1 Up 07:52:53 - 08:22:53 5274

Lone Pine 08:08:09 -33.1 Dark Down 41.5 135.1 Up 07:53:09 - 08:23:09 5273

DCO 08:07:50 -34.0 Dark Down 45.3 139.7 Up 07:52:50 - 08:22:50 5265

Searchlight/Boulder City 08:07:57 -33.9 Dark Down 44.1 137.9 Up 07:52:57 - 08:22:57 5250

Kingman/Dolan Springs 08:07:54 -34.1 Dark Down 44.8 138.7 Up 07:52:54 - 08:22:54 5248

Laughlin/Bullhead City 08:07:56 -34.2 Dark Down 44.5 138.1 Up 07:52:56 - 08:22:56 5231

Mohave Valley 08:07:56 -34.4 Dark Down 44.7 137.9 Up 07:52:56 - 08:22:56 5206

Lake Havasu City 08:07:55 -34.8 Dark Down 45.1 138.0 Up 07:52:55 - 08:22:55 5175

Parker 08:07:54 -35.2 Dark Down 45.4 137.8 Up 07:52:54 - 08:22:54 5142

Blythe 08:07:56 -35.7 Dark Down 45.6 137.1 Up 07:52:56 - 08:22:56 5084

CPSLO 08:08:19 -34.6 Dark Down 40.9 131.6 Up 07:53:19 - 08:23:19 5081

Idyllwild 08:08:04 -35.8 Dark Down 44.3 134.7 Up 07:53:04 - 08:23:04 5036

Wildwood 08:08:11 -35.7 Dark Down 43.0 132.9 Up 07:53:11 - 08:23:11 5020

Calipatria 08:08:00 -36.3 Dark Down 45.5 135.6 Up 07:53:00 - 08:23:00 5011

Yuma 08:07:56 -36.6 Dark Down 46.3 136.4 Up 07:52:56 - 08:22:56 4994

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 04QQ26, (2020/05/20 08:05UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 35.77 142
60Bet Oph      17:43:28.3 +04:34:05  2.8 10.54 125
PPM 201570     18:16:53.1 -03:00:32  5.9  1.26 118
PPM 180286     18:17:42.8 -01:27:52  7.7  0.31 118
PPM 180282     18:17:10.3 -01:49:22  9.2  0.08 118
PPM 180283     18:17:18.8 -01:43:39 10.3  0.03 118
04QQ26         18:17:14.0 -01:44:57 16.5       118
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:39:52 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	08:08:04	-19.9	Dark	Down	31.0	140.3	Up	07:53:04 - 08:23:04	6410
Summerland	08:08:06	-20.2	Dark	Down	31.1	139.9	Up	07:53:06 - 08:23:06	6380
Penticton	08:08:05	-20.3	Dark	Down	31.2	140.0	Up	07:53:05 - 08:23:05	6377
Okanagan Falls	08:08:06	-20.5	Dark	Down	31.4	139.9	Up	07:53:06 - 08:23:06	6361
Oliver	08:08:06	-20.7	Dark	Down	31.5	139.8	Up	07:53:06 - 08:23:06	6348
Anarchist Mountain Observatory	08:08:05	-20.8	Dark	Down	31.7	140.0	Up	07:53:05 - 08:23:05	6338
Oroville	08:08:05	-20.9	Dark	Down	31.7	139.8	Up	07:53:05 - 08:23:05	6331
Tonasket	08:08:08	-21.1	Dark	Down	31.9	139.8	Up	07:53:08 - 08:23:08	6312
Okanogan	08:08:06	-21.5	Dark	Down	32.1	139.5	Up	07:53:06 - 08:23:06	6281
Brewster	08:08:08	-21.7	Dark	Down	32.2	139.1	Up	07:53:08 - 08:23:08	6254
Manson/Chelan	08:08:10	-22.0	Dark	Down	32.2	138.7	Up	07:53:10 - 08:23:10	6228
Entiat	08:08:10	-22.2	Dark	Down	32.4	138.5	Up	07:53:10 - 08:23:10	6208
Wenatchee	08:08:10	-22.5	Dark	Down	32.5	138.3	Up	07:53:10 - 08:23:10	6185
Ellensburg	08:08:11	-22.9	Dark	Down	32.7	137.9	Up	07:53:11 - 08:23:11	6145
Pasco	08:08:07	-23.6	Dark	Down	33.9	139.1	Up	07:53:07 - 08:23:07	6113
Yakima	08:08:11	-23.3	Dark	Down	33.0	137.7	Up	07:53:11 - 08:23:11	6110
PNWRO	08:08:07	-23.8	Dark	Down	34.2	139.2	Up	07:53:07 - 08:23:07	6097
Toppenish/White Swan	08:08:11	-23.5	Dark	Down	33.2	137.8	Up	07:53:11 - 08:23:11	6095
George/Umatilla	08:08:08	-23.9	Dark	Down	34.1	138.7	Up	07:53:08 - 08:23:08	6080
Goldendale	08:08:13	-24.1	Dark	Down	33.5	137.1	Up	07:53:13 - 08:23:13	6038
The Dalles	08:08:15	-24.3	Dark	Down	33.4	136.6	Up	07:53:15 - 08:23:15	6011
Maupin	08:08:15	-24.7	Dark	Down	33.8	136.5	Up	07:53:15 - 08:23:15	5977
Niwot	08:07:19	-27.6	Dark	Down	44.6	152.5	Up	07:52:19 - 08:22:19	5935
Madras/Culver	08:08:15	-25.2	Dark	Down	34.2	136.2	Up	07:53:15 - 08:23:15	5928
SwRI	08:07:20	-27.7	Dark	Down	44.7	152.3	Up	07:52:20 - 08:22:20	5923
Redmond	08:08:16	-25.6	Dark	Down	34.4	136.0	Up	07:53:16 - 08:23:16	5896
Sisters	08:08:18	-25.6	Dark	Down	34.2	135.6	Up	07:53:18 - 08:23:18	5888
Bend	08:08:16	-25.8	Dark	Down	34.5	135.8	Up	07:53:16 - 08:23:16	5873
Oregon Observatory	08:08:17	-26.0	Dark	Down	34.6	135.6	Up	07:53:17 - 08:23:17	5855
La Pine/Gilchrist	08:08:17	-26.2	Dark	Down	34.7	135.4	Up	07:53:17 - 08:23:17	5836
North Lake	08:08:16	-26.6	Dark	Down	35.3	135.8	Up	07:53:16 - 08:23:16	5811
Paisley	08:08:15	-27.2	Dark	Down	35.9	135.9	Up	07:53:15 - 08:23:15	5770
Lakeview	08:08:15	-27.7	Dark	Down	36.3	135.9	Up	07:53:15 - 08:23:15	5729
Chiloquin	08:08:19	-27.3	Dark	Down	35.3	134.5	Up	07:53:19 - 08:23:19	5728
Klamath Falls	08:08:19	-27.7	Dark	Down	35.6	134.4	Up	07:53:19 - 08:23:19	5699
Tulelake	08:08:18	-27.9	Dark	Down	35.9	134.6	Up	07:53:18 - 08:23:18	5682
Cedarville	08:08:14	-28.3	Dark	Down	36.9	135.7	Up	07:53:14 - 08:23:14	5674
Fall River/Burney	08:08:19	-28.8	Dark	Down	36.6	134.2	Up	07:53:19 - 08:23:19	5601
Susanville	08:08:17	-29.4	Dark	Down	37.4	134.6	Up	07:53:17 - 08:23:17	5561
Gimple	08:08:18	-29.7	Dark	Down	37.5	134.2	Up	07:53:18 - 08:23:18	5531
Greenville	08:08:18	-29.7	Dark	Down	37.5	134.1	Up	07:53:18 - 08:23:18	5529
Portola	08:08:16	-30.0	Dark	Down	38.0	134.5	Up	07:53:16 - 08:23:16	5510
Quincy	08:08:18	-29.9	Dark	Down	37.6	134.0	Up	07:53:18 - 08:23:18	5510
Reno	08:08:14	-30.3	Dark	Down	38.5	135.0	Up	07:53:14 - 08:23:14	5502
Carson City	08:08:14	-30.6	Dark	Down	38.8	134.8	Up	07:53:14 - 08:23:14	5469
Yerington	08:08:12	-30.8	Dark	Down	39.2	135.4	Up	07:53:12 - 08:23:12	5467
Gardnerville	08:08:14	-30.9	Dark	Down	39.0	134.7	Up	07:53:14 - 08:23:14	5448
Hawthorne	08:08:11	-31.2	Dark	Down	39.9	135.7	Up	07:53:11 - 08:23:11	5438
Tonopah	08:08:05	-31.6	Dark	Down	41.0	136.9	Up	07:53:05 - 08:23:05	5431
Lee Vining	08:08:12	-31.8	Dark	Down	40.0	134.8	Up	07:53:12 - 08:23:12	5373
Bishop	08:08:10	-32.4	Dark	Down	40.8	135.2	Up	07:53:10 - 08:23:10	5335
Beatty	08:08:04	-32.7	Dark	Down	42.0	136.8	Up	07:53:04 - 08:23:04	5335
Indian Springs	08:08:00	-32.9	Dark	Down	42.9	137.8	Up	07:53:00 - 08:23:00	5333
Henderson	08:07:57	-33.4	Dark	Down	43.6	138.2	Up	07:52:57 - 08:22:57	5302
Patrick	08:07:53	-33.8	Dark	Down	44.7	139.1	Up	07:52:53 - 08:22:53	5274
Lone Pine	08:08:09	-33.1	Dark	Down	41.5	135.1	Up	07:53:09 - 08:23:09	5273
DCO	08:07:50	-34.0	Dark	Down	45.3	139.7	Up	07:52:50 - 08:22:50	5265
Searchlight/Boulder City	08:07:57	-33.9	Dark	Down	44.1	137.9	Up	07:52:57 - 08:22:57	5250
Kingman/Dolan Springs	08:07:54	-34.1	Dark	Down	44.8	138.7	Up	07:52:54 - 08:22:54	5248
Laughlin/Bullhead City	08:07:56	-34.2	Dark	Down	44.5	138.1	Up	07:52:56 - 08:22:56	5231
Mohave Valley	08:07:56	-34.4	Dark	Down	44.7	137.9	Up	07:52:56 - 08:22:56	5206
Lake Havasu City	08:07:55	-34.8	Dark	Down	45.1	138.0	Up	07:52:55 - 08:22:55	5175
Parker	08:07:54	-35.2	Dark	Down	45.4	137.8	Up	07:52:54 - 08:22:54	5142
Blythe	08:07:56	-35.7	Dark	Down	45.6	137.1	Up	07:52:56 - 08:22:56	5084
CPSLO	08:08:19	-34.6	Dark	Down	40.9	131.6	Up	07:53:19 - 08:23:19	5081
Idyllwild	08:08:04	-35.8	Dark	Down	44.3	134.7	Up	07:53:04 - 08:23:04	5036
Wildwood	08:08:11	-35.7	Dark	Down	43.0	132.9	Up	07:53:11 - 08:23:11	5020
Calipatria	08:08:00	-36.3	Dark	Down	45.5	135.6	Up	07:53:00 - 08:23:00	5011
Yuma	08:07:56	-36.6	Dark	Down	46.3	136.4	Up	07:52:56 - 08:22:56	4994