RECON: TNO occultation with 10NG146

Event between 10NG146 and star GA0820:22331163 with event index number of 1577978

Geocentric closest approach at 2020/09/13 08:31:34 UTC

J2000 position of star is 22:28:05.6 -07:13:02
Equinox of date position of star is 22:29:10.5 -07:06:40
Stellar brightness G=16.9, use SENSEUP=128
Star is 140 degrees from the moon. Moon is 21% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 22.1 AU from the Sun and 21.1 AU from the Earth.
The TNO is moving 22.6 km/sec on the sky relative to the star, or, 5.3 arcsec/hr.
The 1-sigma error in the time of the event is 52 seconds.
The 1-sigma cross-track error in the shadow position is 937 km.
The sky-plane scale is 15319.0 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=97.7 km assuming a 5% albedo -- 2.7 sec chord
Diameter=39.9 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR

Star training set for 10NG146, (2020/09/13 08:32UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:47.4 -29:30:44  1.2 23.46 139
PPM 206458     22:32:23.4 -06:26:56  6.3  1.04 139
PPM 206367     22:27:39.8 -07:16:18  7.3  0.41 140
PPM 206394     22:29:11.4 -06:55:23  9.6  0.19 140
10NG146        22:29:10.6 -07:06:40 16.9       139
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=1.0 and success probability=41.0%

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 08:29:05 -35.6 Dark Up 29.0 207.2 Low 08:24:17 - 08:33:53 232

Victoria 08:29:16 -37.7 Dark Down 31.6 203.1 Up 08:24:28 - 08:34:04 220

Peachland 08:29:06 -36.2 Dark Up 29.5 206.8 Low 08:24:18 - 08:33:54 210

Kelowna 08:29:06 -36.0 Dark Up 29.3 207.1 Low 08:24:18 - 08:33:54 210

Summerland 08:29:06 -36.3 Dark Up 29.6 206.9 Low 08:24:18 - 08:33:54 197

Penticton 08:29:06 -36.4 Dark Up 29.7 207.1 Low 08:24:18 - 08:33:54 189

Oliver 08:29:05 -36.7 Dark Up 30.0 207.2 Low 08:24:17 - 08:33:53 165

Anarchist Mountain Observatory 08:29:05 -36.9 Dark Up 30.1 207.4 Up 08:24:17 - 08:33:53 148

Tonasket 08:29:05 -37.2 Dark Up 30.4 207.4 Up 08:24:17 - 08:33:53 128

Okanogan 08:29:05 -37.5 Dark Up 30.7 207.3 Up 08:24:17 - 08:33:53 108

Brewster 08:29:06 -37.8 Dark Up 31.0 207.2 Up 08:24:18 - 08:33:54 94

Manson/Chelan 08:29:07 -38.1 Dark Up 31.3 206.9 Up 08:24:19 - 08:33:55 89

Entiat 08:29:07 -38.3 Dark Down 31.5 206.8 Up 08:24:19 - 08:33:55 75

Wenatchee 08:29:07 -38.5 Dark Down 31.8 206.8 Up 08:24:19 - 08:33:55 59

Ellensburg 08:29:08 -39.0 Dark Down 32.2 206.7 Up 08:24:20 - 08:33:56 35

Yakima 08:29:07 -39.4 Dark Down 32.6 206.8 Up 08:24:19 - 08:33:55 6

Toppenish/White Swan 08:29:07 -39.6 Dark Down 32.7 207.0 Up 08:24:19 - 08:33:55 -14

Goldendale 08:29:08 -40.2 Dark Down 33.4 206.7 Up 08:24:20 - 08:33:56 -43

The Dalles 08:29:09 -40.4 Dark Down 33.7 206.4 Up 08:24:21 - 08:33:57 -50

Pasco 08:29:03 -39.5 Dark Down 32.4 208.5 Up 08:24:15 - 08:33:51 -59

PNWRO 08:29:02 -39.7 Dark Down 32.6 208.8 Up 08:24:14 - 08:33:50 -83

Maupin 08:29:09 -40.8 Dark Down 34.0 206.6 Up 08:24:21 - 08:33:57 -84

Sisters 08:29:10 -41.8 Dark Down 35.0 206.3 Up 08:24:22 - 08:33:58 -135

Redmond 08:29:09 -41.7 Dark Down 34.9 206.8 Up 08:24:21 - 08:33:57 -148

Bend 08:29:09 -42.0 Dark Down 35.1 206.7 Up 08:24:21 - 08:33:57 -161

Oregon Observatory 08:29:10 -42.1 Dark Down 35.3 206.6 Up 08:24:22 - 08:33:58 -170

La Pine/Gilchrist 08:29:10 -42.4 Dark Down 35.5 206.6 Up 08:24:22 - 08:33:58 -184

North Lake 08:29:08 -42.7 Dark Down 35.7 207.4 Up 08:24:20 - 08:33:56 -234

Klamath Falls 08:29:10 -43.8 Dark Down 36.9 206.8 Up 08:24:22 - 08:33:58 -288

Paisley 08:29:07 -43.2 Dark Down 36.0 208.0 Up 08:24:19 - 08:33:55 -288

Lakeview 08:29:06 -43.7 Dark Down 36.4 208.4 Up 08:24:18 - 08:33:54 -333

Cedarville 08:29:05 -44.3 Dark Down 36.9 208.8 Up 08:24:17 - 08:33:53 -390

Fall River/Burney 08:29:09 -44.9 Dark Down 37.8 207.6 Up 08:24:21 - 08:33:57 -392

Susanville 08:29:07 -45.5 Dark Down 38.1 208.7 Up 08:24:19 - 08:33:55 -465

Greenville 08:29:08 -45.8 Dark Down 38.4 208.5 Up 08:24:20 - 08:33:56 -478

Gimple 08:29:08 -45.8 Dark Down 38.4 208.6 Up 08:24:20 - 08:33:56 -481

Quincy 08:29:08 -46.0 Dark Down 38.6 208.5 Up 08:24:20 - 08:33:56 -494

Portola 08:29:06 -46.0 Dark Down 38.6 209.1 Up 08:24:18 - 08:33:54 -519

Reno 08:29:04 -46.2 Dark Down 38.5 210.0 Up 08:24:16 - 08:33:52 -561

Carson City 08:29:04 -46.5 Dark Down 38.8 210.2 Up 08:24:16 - 08:33:52 -591

Gardnerville 08:29:04 -46.8 Dark Down 39.0 210.3 Up 08:24:16 - 08:33:52 -612

Yerington 08:29:02 -46.6 Dark Down 38.8 211.0 Up 08:24:14 - 08:33:50 -626

Hawthorne 08:29:01 -47.0 Dark Down 38.9 211.8 Up 08:24:13 - 08:33:49 -681

Lee Vining 08:29:02 -47.6 Dark Down 39.6 211.5 Up 08:24:14 - 08:33:50 -713

Tonopah 08:28:56 -47.1 Dark Down 38.7 213.6 Up 08:24:08 - 08:33:44 -765

Bishop 08:29:00 -48.0 Dark Down 39.8 212.6 Up 08:24:12 - 08:33:48 -787

Beatty 08:28:54 -48.1 Dark Down 39.5 214.6 Up 08:24:06 - 08:33:42 -878

CPSLO 08:29:07 -50.5 Dark Down 42.5 210.9 Up 08:24:19 - 08:33:55 -890

Indian Springs 08:28:51 -48.2 Dark Down 39.3 216.0 Up 08:24:03 - 08:33:39 -941

Niwot 08:28:21 -41.5 Dark Up 31.3 225.2 Up 08:23:33 - 08:33:09 -953

SwRI 08:28:21 -41.6 Dark Up 31.4 225.2 Up 08:23:33 - 08:33:09 -960

Henderson 08:28:49 -48.5 Dark Down 39.4 217.0 Up 08:24:01 - 08:33:37 -1009

Searchlight/Boulder City 08:28:49 -49.0 Dark Down 39.8 217.4 Up 08:24:01 - 08:33:37 -1061

Wildwood 08:29:01 -51.2 Dark Down 42.7 213.9 Up 08:24:13 - 08:33:49 -1062

Laughlin/Bullhead City 08:28:47 -49.2 Dark Down 39.9 217.9 Up 08:23:59 - 08:33:35 -1099

Patrick 08:28:45 -48.8 Dark Down 39.3 218.6 Up 08:23:57 - 08:33:33 -1100

Kingman/Dolan Springs 08:28:46 -49.0 Dark Down 39.6 218.5 Up 08:23:58 - 08:33:34 -1114

Mohave Valley 08:28:47 -49.4 Dark Down 40.1 218.1 Up 08:23:59 - 08:33:35 -1124

DCO 08:28:43 -48.8 Dark Down 39.2 219.5 Up 08:23:55 - 08:33:31 -1150

Idyllwild 08:28:54 -51.1 Dark Down 42.1 216.3 Up 08:24:06 - 08:33:42 -1156

Lake Havasu City 08:28:46 -49.7 Dark Down 40.3 218.6 Up 08:23:58 - 08:33:34 -1167

Parker 08:28:47 -50.1 Dark Down 40.5 218.8 Up 08:23:59 - 08:33:35 -1200

Blythe 08:28:48 -50.6 Dark Down 41.1 218.7 Up 08:24:00 - 08:33:36 -1237

Calipatria 08:28:51 -51.4 Dark Down 42.0 218.0 Up 08:24:03 - 08:33:39 -1250

George/Scottsdale 08:28:39 -49.6 Dark Down 39.6 221.6 Up 08:23:51 - 08:33:27 -1317

Yuma 08:28:47 -51.5 Dark Down 41.8 219.2 Up 08:23:59 - 08:33:35 -1319

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 10NG146, (2020/09/13 08:32UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 23.46 139
PPM 206458     22:31:18.5 -06:33:21  6.3  1.04 139
PPM 206367     22:26:34.8 -07:22:40  7.3  0.41 140
PPM 206394     22:28:06.4 -07:01:46  9.6  0.19 140
10NG146        22:28:05.6 -07:13:02 16.9       140
Positions are for J2000

Event circumstances last updated at 2020/08/30 20:56:54 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	08:29:05	-35.6	Dark	Up	29.0	207.2	Low	08:24:17 - 08:33:53	232
Victoria	08:29:16	-37.7	Dark	Down	31.6	203.1	Up	08:24:28 - 08:34:04	220
Peachland	08:29:06	-36.2	Dark	Up	29.5	206.8	Low	08:24:18 - 08:33:54	210
Kelowna	08:29:06	-36.0	Dark	Up	29.3	207.1	Low	08:24:18 - 08:33:54	210
Summerland	08:29:06	-36.3	Dark	Up	29.6	206.9	Low	08:24:18 - 08:33:54	197
Penticton	08:29:06	-36.4	Dark	Up	29.7	207.1	Low	08:24:18 - 08:33:54	189
Oliver	08:29:05	-36.7	Dark	Up	30.0	207.2	Low	08:24:17 - 08:33:53	165
Anarchist Mountain Observatory	08:29:05	-36.9	Dark	Up	30.1	207.4	Up	08:24:17 - 08:33:53	148
Tonasket	08:29:05	-37.2	Dark	Up	30.4	207.4	Up	08:24:17 - 08:33:53	128
Okanogan	08:29:05	-37.5	Dark	Up	30.7	207.3	Up	08:24:17 - 08:33:53	108
Brewster	08:29:06	-37.8	Dark	Up	31.0	207.2	Up	08:24:18 - 08:33:54	94
Manson/Chelan	08:29:07	-38.1	Dark	Up	31.3	206.9	Up	08:24:19 - 08:33:55	89
Entiat	08:29:07	-38.3	Dark	Down	31.5	206.8	Up	08:24:19 - 08:33:55	75
Wenatchee	08:29:07	-38.5	Dark	Down	31.8	206.8	Up	08:24:19 - 08:33:55	59
Ellensburg	08:29:08	-39.0	Dark	Down	32.2	206.7	Up	08:24:20 - 08:33:56	35
Yakima	08:29:07	-39.4	Dark	Down	32.6	206.8	Up	08:24:19 - 08:33:55	6
Toppenish/White Swan	08:29:07	-39.6	Dark	Down	32.7	207.0	Up	08:24:19 - 08:33:55	-14
Goldendale	08:29:08	-40.2	Dark	Down	33.4	206.7	Up	08:24:20 - 08:33:56	-43
The Dalles	08:29:09	-40.4	Dark	Down	33.7	206.4	Up	08:24:21 - 08:33:57	-50
Pasco	08:29:03	-39.5	Dark	Down	32.4	208.5	Up	08:24:15 - 08:33:51	-59
PNWRO	08:29:02	-39.7	Dark	Down	32.6	208.8	Up	08:24:14 - 08:33:50	-83
Maupin	08:29:09	-40.8	Dark	Down	34.0	206.6	Up	08:24:21 - 08:33:57	-84
Sisters	08:29:10	-41.8	Dark	Down	35.0	206.3	Up	08:24:22 - 08:33:58	-135
Redmond	08:29:09	-41.7	Dark	Down	34.9	206.8	Up	08:24:21 - 08:33:57	-148
Bend	08:29:09	-42.0	Dark	Down	35.1	206.7	Up	08:24:21 - 08:33:57	-161
Oregon Observatory	08:29:10	-42.1	Dark	Down	35.3	206.6	Up	08:24:22 - 08:33:58	-170
La Pine/Gilchrist	08:29:10	-42.4	Dark	Down	35.5	206.6	Up	08:24:22 - 08:33:58	-184
North Lake	08:29:08	-42.7	Dark	Down	35.7	207.4	Up	08:24:20 - 08:33:56	-234
Klamath Falls	08:29:10	-43.8	Dark	Down	36.9	206.8	Up	08:24:22 - 08:33:58	-288
Paisley	08:29:07	-43.2	Dark	Down	36.0	208.0	Up	08:24:19 - 08:33:55	-288
Lakeview	08:29:06	-43.7	Dark	Down	36.4	208.4	Up	08:24:18 - 08:33:54	-333
Cedarville	08:29:05	-44.3	Dark	Down	36.9	208.8	Up	08:24:17 - 08:33:53	-390
Fall River/Burney	08:29:09	-44.9	Dark	Down	37.8	207.6	Up	08:24:21 - 08:33:57	-392
Susanville	08:29:07	-45.5	Dark	Down	38.1	208.7	Up	08:24:19 - 08:33:55	-465
Greenville	08:29:08	-45.8	Dark	Down	38.4	208.5	Up	08:24:20 - 08:33:56	-478
Gimple	08:29:08	-45.8	Dark	Down	38.4	208.6	Up	08:24:20 - 08:33:56	-481
Quincy	08:29:08	-46.0	Dark	Down	38.6	208.5	Up	08:24:20 - 08:33:56	-494
Portola	08:29:06	-46.0	Dark	Down	38.6	209.1	Up	08:24:18 - 08:33:54	-519
Reno	08:29:04	-46.2	Dark	Down	38.5	210.0	Up	08:24:16 - 08:33:52	-561
Carson City	08:29:04	-46.5	Dark	Down	38.8	210.2	Up	08:24:16 - 08:33:52	-591
Gardnerville	08:29:04	-46.8	Dark	Down	39.0	210.3	Up	08:24:16 - 08:33:52	-612
Yerington	08:29:02	-46.6	Dark	Down	38.8	211.0	Up	08:24:14 - 08:33:50	-626
Hawthorne	08:29:01	-47.0	Dark	Down	38.9	211.8	Up	08:24:13 - 08:33:49	-681
Lee Vining	08:29:02	-47.6	Dark	Down	39.6	211.5	Up	08:24:14 - 08:33:50	-713
Tonopah	08:28:56	-47.1	Dark	Down	38.7	213.6	Up	08:24:08 - 08:33:44	-765
Bishop	08:29:00	-48.0	Dark	Down	39.8	212.6	Up	08:24:12 - 08:33:48	-787
Beatty	08:28:54	-48.1	Dark	Down	39.5	214.6	Up	08:24:06 - 08:33:42	-878
CPSLO	08:29:07	-50.5	Dark	Down	42.5	210.9	Up	08:24:19 - 08:33:55	-890
Indian Springs	08:28:51	-48.2	Dark	Down	39.3	216.0	Up	08:24:03 - 08:33:39	-941
Niwot	08:28:21	-41.5	Dark	Up	31.3	225.2	Up	08:23:33 - 08:33:09	-953
SwRI	08:28:21	-41.6	Dark	Up	31.4	225.2	Up	08:23:33 - 08:33:09	-960
Henderson	08:28:49	-48.5	Dark	Down	39.4	217.0	Up	08:24:01 - 08:33:37	-1009
Searchlight/Boulder City	08:28:49	-49.0	Dark	Down	39.8	217.4	Up	08:24:01 - 08:33:37	-1061
Wildwood	08:29:01	-51.2	Dark	Down	42.7	213.9	Up	08:24:13 - 08:33:49	-1062
Laughlin/Bullhead City	08:28:47	-49.2	Dark	Down	39.9	217.9	Up	08:23:59 - 08:33:35	-1099
Patrick	08:28:45	-48.8	Dark	Down	39.3	218.6	Up	08:23:57 - 08:33:33	-1100
Kingman/Dolan Springs	08:28:46	-49.0	Dark	Down	39.6	218.5	Up	08:23:58 - 08:33:34	-1114
Mohave Valley	08:28:47	-49.4	Dark	Down	40.1	218.1	Up	08:23:59 - 08:33:35	-1124
DCO	08:28:43	-48.8	Dark	Down	39.2	219.5	Up	08:23:55 - 08:33:31	-1150
Idyllwild	08:28:54	-51.1	Dark	Down	42.1	216.3	Up	08:24:06 - 08:33:42	-1156
Lake Havasu City	08:28:46	-49.7	Dark	Down	40.3	218.6	Up	08:23:58 - 08:33:34	-1167
Parker	08:28:47	-50.1	Dark	Down	40.5	218.8	Up	08:23:59 - 08:33:35	-1200
Blythe	08:28:48	-50.6	Dark	Down	41.1	218.7	Up	08:24:00 - 08:33:36	-1237
Calipatria	08:28:51	-51.4	Dark	Down	42.0	218.0	Up	08:24:03 - 08:33:39	-1250
George/Scottsdale	08:28:39	-49.6	Dark	Down	39.6	221.6	Up	08:23:51 - 08:33:27	-1317
Yuma	08:28:47	-51.5	Dark	Down	41.8	219.2	Up	08:23:59 - 08:33:35	-1319