RECON: TNO occultation with 16TT94

Event between 16TT94 and star GA0720:00205261 with event index number of 1892357

Geocentric closest approach at 2021/10/03 10:22:45 UTC

J2000 position of star is 02:46:56.2 -16:50:54
Equinox of date position of star is 02:47:55.4 -16:45:39
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 116 degrees from the moon. Moon is 12% illuminated.
TNO apparent brightness V=23.1

[RECON map]
TNO is 39.2 AU from the Sun and 38.4 AU from the Earth.
The TNO is moving 23.3 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 313 seconds.
The 1-sigma cross-track error in the shadow position is 5075 km.
The sky-plane scale is 27859.8 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=228.0 km assuming a 5% albedo -- 9.8 sec chord
Diameter=93.1 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is SCATEXTD

Star training set for 16TT94, (2021/10/03 10:23UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:35.1 -08:10:41  0.1 36.98  79
68Omi Cet      02:20:26.8 -02:52:48  2.0 15.44 120
1Tau1Eri       02:46:07.1 -18:28:54  4.6  1.78 117
PPM 212025     02:49:40.8 -16:43:18  8.3  0.41 116
PPM 211991     02:48:27.0 -16:31:31  9.7  0.26 116
16TT94         02:47:57.2 -16:45:29 15.7       116
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 2.9 sigma about the mid-time.
The median site spacing is 13.8 km RECON observability=1.0 and success probability=6.6%

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

Victoria 10:20:25 -36.8 Dark Down 24.6 182.4 Low 10:05:25 - 10:35:25 -2943

Clarence Fulton 10:20:13 -33.7 Dark Up 22.7 186.6 Low 10:05:13 - 10:35:13 -3036

Peachland 10:20:14 -34.2 Dark Up 23.2 186.2 Low 10:05:14 - 10:35:14 -3038

Kelowna 10:20:14 -34.0 Dark Up 23.1 186.5 Low 10:05:14 - 10:35:14 -3046

Summerland 10:20:14 -34.3 Dark Up 23.3 186.3 Low 10:05:14 - 10:35:14 -3048

Penticton 10:20:14 -34.3 Dark Up 23.4 186.4 Low 10:05:14 - 10:35:14 -3056

Oliver 10:20:14 -34.5 Dark Up 23.7 186.4 Low 10:05:14 - 10:35:14 -3071

Anarchist Mountain Observatory 10:20:14 -34.5 Dark Up 23.9 186.6 Low 10:05:14 - 10:35:14 -3086

Tonasket 10:20:14 -34.8 Dark Up 24.2 186.5 Low 10:05:14 - 10:35:14 -3097

Manson/Chelan 10:20:17 -35.6 Dark Up 25.1 185.8 Low 10:05:17 - 10:35:17 -3103

Okanogan 10:20:15 -35.0 Dark Up 24.6 186.4 Low 10:05:15 - 10:35:15 -3105

Brewster 10:20:15 -35.3 Dark Up 24.8 186.2 Low 10:05:15 - 10:35:15 -3109

Wenatchee 10:20:18 -36.0 Dark Up 25.6 185.7 Low 10:05:18 - 10:35:18 -3117

Ellensburg 10:20:18 -36.4 Dark Down 26.0 185.5 Low 10:05:18 - 10:35:18 -3126

Yakima 10:20:19 -36.7 Dark Down 26.4 185.5 Low 10:05:19 - 10:35:19 -3144

Toppenish/White Swan 10:20:19 -36.8 Dark Down 26.6 185.7 Low 10:05:19 - 10:35:19 -3162

The Dalles 10:20:21 -37.7 Dark Down 27.4 184.9 Low 10:05:21 - 10:35:21 -3164

Goldendale 10:20:20 -37.3 Dark Down 27.2 185.2 Low 10:05:20 - 10:35:20 -3169

Maupin 10:20:21 -37.9 Dark Down 27.8 185.0 Low 10:05:21 - 10:35:21 -3188

Sisters 10:20:24 -38.7 Dark Down 28.7 184.5 Low 10:05:24 - 10:35:24 -3208

Pasco 10:20:15 -36.2 Dark Up 26.6 187.0 Low 10:05:15 - 10:35:15 -3222

Redmond 10:20:22 -38.5 Dark Down 28.7 184.9 Low 10:05:22 - 10:35:22 -3227

Bend 10:20:23 -38.7 Dark Down 29.0 184.8 Low 10:05:23 - 10:35:23 -3231

Oregon Observatory 10:20:24 -38.9 Dark Down 29.1 184.7 Low 10:05:24 - 10:35:24 -3234

La Pine/Gilchrist 10:20:24 -39.1 Dark Down 29.3 184.6 Low 10:05:24 - 10:35:24 -3241

PNWRO 10:20:14 -36.2 Dark Up 26.8 187.3 Low 10:05:14 - 10:35:14 -3243

Chiloquin 10:20:26 -40.0 Dark Down 30.5 184.3 Up 10:05:26 - 10:35:26 -3281

North Lake 10:20:23 -39.0 Dark Down 29.7 185.3 Low 10:05:23 - 10:35:23 -3290

Klamath Falls 10:20:26 -40.2 Dark Down 30.8 184.4 Up 10:05:26 - 10:35:26 -3302

Paisley 10:20:22 -39.2 Dark Down 30.3 185.7 Up 10:05:22 - 10:35:22 -3334

Lakeview 10:20:23 -39.4 Dark Down 30.8 186.0 Up 10:05:23 - 10:35:23 -3369

Fall River/Burney 10:20:27 -40.7 Dark Down 32.0 184.9 Up 10:05:27 - 10:35:27 -3381

Cedarville 10:20:23 -39.7 Dark Down 31.4 186.2 Up 10:05:23 - 10:35:23 -3411

Susanville 10:20:25 -40.6 Dark Down 32.5 185.7 Up 10:05:25 - 10:35:25 -3449

Greenville 10:20:27 -41.0 Dark Down 32.8 185.4 Up 10:05:27 - 10:35:27 -3450

Gimple 10:20:26 -40.9 Dark Down 32.8 185.5 Up 10:05:26 - 10:35:26 -3454

Quincy 10:20:26 -41.1 Dark Down 33.0 185.5 Up 10:05:26 - 10:35:26 -3461

Portola 10:20:25 -40.9 Dark Down 33.1 186.0 Up 10:05:25 - 10:35:25 -3490

Reno 10:20:24 -40.7 Dark Down 33.3 186.8 Up 10:05:24 - 10:35:24 -3536

Carson City 10:20:24 -40.9 Dark Down 33.7 186.8 Up 10:05:24 - 10:35:24 -3557

Gardnerville 10:20:24 -41.0 Dark Down 33.9 186.9 Up 10:05:24 - 10:35:24 -3573

Yerington 10:20:22 -40.6 Dark Down 33.8 187.5 Up 10:05:22 - 10:35:22 -3599

Hawthorne 10:20:21 -40.5 Dark Down 34.2 188.2 Up 10:05:21 - 10:35:21 -3652

Lee Vining 10:20:23 -41.1 Dark Down 34.8 187.7 Up 10:05:23 - 10:35:23 -3660

Bishop 10:20:22 -41.0 Dark Down 35.4 188.6 Up 10:05:22 - 10:35:22 -3732

CPSLO 10:20:31 -43.6 Dark Down 37.6 186.1 Up 10:05:31 - 10:35:31 -3743

Tonopah 10:20:17 -39.8 Dark Down 34.5 189.9 Up 10:05:17 - 10:35:17 -3748

Beatty 10:20:17 -40.1 Dark Down 35.6 190.5 Up 10:05:17 - 10:35:17 -3841

Indian Springs 10:20:15 -39.5 Dark Down 35.7 191.8 Up 10:05:15 - 10:35:15 -3916

Wildwood 10:20:27 -42.8 Dark Down 38.6 188.7 Up 10:05:27 - 10:35:27 -3922

Henderson 10:20:13 -39.3 Dark Down 36.2 192.7 Up 10:05:13 - 10:35:13 -3986

Idyllwild 10:20:21 -41.7 Dark Down 38.7 191.0 Up 10:05:21 - 10:35:21 -4043

Laughlin/Bullhead City 10:20:13 -39.4 Dark Down 36.9 193.3 Up 10:05:13 - 10:35:13 -4063

Mohave Valley 10:20:13 -39.6 Dark Down 37.2 193.4 Up 10:05:13 - 10:35:13 -4081

Patrick 10:20:10 -38.8 Dark Up 36.6 194.1 Up 10:05:10 - 10:35:10 -4083

Kingman/Dolan Springs 10:20:10 -39.1 Dark Up 36.8 193.9 Up 10:05:10 - 10:35:10 -4088

Lake Havasu City 10:20:13 -39.6 Dark Down 37.5 193.7 Up 10:05:13 - 10:35:13 -4120

Parker 10:20:13 -39.7 Dark Down 37.9 193.8 Up 10:05:13 - 10:35:13 -4144

Calipatria 10:20:18 -41.1 Dark Down 39.1 192.6 Up 10:05:18 - 10:35:18 -4146

Blythe 10:20:14 -40.2 Dark Down 38.4 193.6 Up 10:05:14 - 10:35:14 -4163

Dunrhomin 10:19:41 -30.6 Dark Up 29.8 202.6 Low 10:04:41 - 10:34:41 -4212

Yuma 10:20:15 -40.6 Dark Down 39.3 193.7 Up 10:05:15 - 10:35:15 -4223

George/Scottsdale 10:20:06 -38.1 Dark Up 37.8 196.8 Up 10:05:06 - 10:35:06 -4302

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 16TT94, (2021/10/03 10:23UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1 36.98  79
68Omi Cet      02:19:20.8 -02:58:45  2.0 15.44 120
1Tau1Eri       02:45:06.7 -18:34:21  4.6  1.78 117
PPM 212025     02:48:39.7 -16:48:41  8.3  0.41 116
PPM 211991     02:47:25.9 -16:36:55  9.7  0.26 116
16TT94         02:46:56.2 -16:50:54 15.7       116
Positions are for J2000

Event circumstances last updated at 2021/02/01 21:21:39 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)
Victoria	10:20:25	-36.8	Dark	Down	24.6	182.4	Low	10:05:25 - 10:35:25	-2943
Clarence Fulton	10:20:13	-33.7	Dark	Up	22.7	186.6	Low	10:05:13 - 10:35:13	-3036
Peachland	10:20:14	-34.2	Dark	Up	23.2	186.2	Low	10:05:14 - 10:35:14	-3038
Kelowna	10:20:14	-34.0	Dark	Up	23.1	186.5	Low	10:05:14 - 10:35:14	-3046
Summerland	10:20:14	-34.3	Dark	Up	23.3	186.3	Low	10:05:14 - 10:35:14	-3048
Penticton	10:20:14	-34.3	Dark	Up	23.4	186.4	Low	10:05:14 - 10:35:14	-3056
Oliver	10:20:14	-34.5	Dark	Up	23.7	186.4	Low	10:05:14 - 10:35:14	-3071
Anarchist Mountain Observatory	10:20:14	-34.5	Dark	Up	23.9	186.6	Low	10:05:14 - 10:35:14	-3086
Tonasket	10:20:14	-34.8	Dark	Up	24.2	186.5	Low	10:05:14 - 10:35:14	-3097
Manson/Chelan	10:20:17	-35.6	Dark	Up	25.1	185.8	Low	10:05:17 - 10:35:17	-3103
Okanogan	10:20:15	-35.0	Dark	Up	24.6	186.4	Low	10:05:15 - 10:35:15	-3105
Brewster	10:20:15	-35.3	Dark	Up	24.8	186.2	Low	10:05:15 - 10:35:15	-3109
Wenatchee	10:20:18	-36.0	Dark	Up	25.6	185.7	Low	10:05:18 - 10:35:18	-3117
Ellensburg	10:20:18	-36.4	Dark	Down	26.0	185.5	Low	10:05:18 - 10:35:18	-3126
Yakima	10:20:19	-36.7	Dark	Down	26.4	185.5	Low	10:05:19 - 10:35:19	-3144
Toppenish/White Swan	10:20:19	-36.8	Dark	Down	26.6	185.7	Low	10:05:19 - 10:35:19	-3162
The Dalles	10:20:21	-37.7	Dark	Down	27.4	184.9	Low	10:05:21 - 10:35:21	-3164
Goldendale	10:20:20	-37.3	Dark	Down	27.2	185.2	Low	10:05:20 - 10:35:20	-3169
Maupin	10:20:21	-37.9	Dark	Down	27.8	185.0	Low	10:05:21 - 10:35:21	-3188
Sisters	10:20:24	-38.7	Dark	Down	28.7	184.5	Low	10:05:24 - 10:35:24	-3208
Pasco	10:20:15	-36.2	Dark	Up	26.6	187.0	Low	10:05:15 - 10:35:15	-3222
Redmond	10:20:22	-38.5	Dark	Down	28.7	184.9	Low	10:05:22 - 10:35:22	-3227
Bend	10:20:23	-38.7	Dark	Down	29.0	184.8	Low	10:05:23 - 10:35:23	-3231
Oregon Observatory	10:20:24	-38.9	Dark	Down	29.1	184.7	Low	10:05:24 - 10:35:24	-3234
La Pine/Gilchrist	10:20:24	-39.1	Dark	Down	29.3	184.6	Low	10:05:24 - 10:35:24	-3241
PNWRO	10:20:14	-36.2	Dark	Up	26.8	187.3	Low	10:05:14 - 10:35:14	-3243
Chiloquin	10:20:26	-40.0	Dark	Down	30.5	184.3	Up	10:05:26 - 10:35:26	-3281
North Lake	10:20:23	-39.0	Dark	Down	29.7	185.3	Low	10:05:23 - 10:35:23	-3290
Klamath Falls	10:20:26	-40.2	Dark	Down	30.8	184.4	Up	10:05:26 - 10:35:26	-3302
Paisley	10:20:22	-39.2	Dark	Down	30.3	185.7	Up	10:05:22 - 10:35:22	-3334
Lakeview	10:20:23	-39.4	Dark	Down	30.8	186.0	Up	10:05:23 - 10:35:23	-3369
Fall River/Burney	10:20:27	-40.7	Dark	Down	32.0	184.9	Up	10:05:27 - 10:35:27	-3381
Cedarville	10:20:23	-39.7	Dark	Down	31.4	186.2	Up	10:05:23 - 10:35:23	-3411
Susanville	10:20:25	-40.6	Dark	Down	32.5	185.7	Up	10:05:25 - 10:35:25	-3449
Greenville	10:20:27	-41.0	Dark	Down	32.8	185.4	Up	10:05:27 - 10:35:27	-3450
Gimple	10:20:26	-40.9	Dark	Down	32.8	185.5	Up	10:05:26 - 10:35:26	-3454
Quincy	10:20:26	-41.1	Dark	Down	33.0	185.5	Up	10:05:26 - 10:35:26	-3461
Portola	10:20:25	-40.9	Dark	Down	33.1	186.0	Up	10:05:25 - 10:35:25	-3490
Reno	10:20:24	-40.7	Dark	Down	33.3	186.8	Up	10:05:24 - 10:35:24	-3536
Carson City	10:20:24	-40.9	Dark	Down	33.7	186.8	Up	10:05:24 - 10:35:24	-3557
Gardnerville	10:20:24	-41.0	Dark	Down	33.9	186.9	Up	10:05:24 - 10:35:24	-3573
Yerington	10:20:22	-40.6	Dark	Down	33.8	187.5	Up	10:05:22 - 10:35:22	-3599
Hawthorne	10:20:21	-40.5	Dark	Down	34.2	188.2	Up	10:05:21 - 10:35:21	-3652
Lee Vining	10:20:23	-41.1	Dark	Down	34.8	187.7	Up	10:05:23 - 10:35:23	-3660
Bishop	10:20:22	-41.0	Dark	Down	35.4	188.6	Up	10:05:22 - 10:35:22	-3732
CPSLO	10:20:31	-43.6	Dark	Down	37.6	186.1	Up	10:05:31 - 10:35:31	-3743
Tonopah	10:20:17	-39.8	Dark	Down	34.5	189.9	Up	10:05:17 - 10:35:17	-3748
Beatty	10:20:17	-40.1	Dark	Down	35.6	190.5	Up	10:05:17 - 10:35:17	-3841
Indian Springs	10:20:15	-39.5	Dark	Down	35.7	191.8	Up	10:05:15 - 10:35:15	-3916
Wildwood	10:20:27	-42.8	Dark	Down	38.6	188.7	Up	10:05:27 - 10:35:27	-3922
Henderson	10:20:13	-39.3	Dark	Down	36.2	192.7	Up	10:05:13 - 10:35:13	-3986
Idyllwild	10:20:21	-41.7	Dark	Down	38.7	191.0	Up	10:05:21 - 10:35:21	-4043
Laughlin/Bullhead City	10:20:13	-39.4	Dark	Down	36.9	193.3	Up	10:05:13 - 10:35:13	-4063
Mohave Valley	10:20:13	-39.6	Dark	Down	37.2	193.4	Up	10:05:13 - 10:35:13	-4081
Patrick	10:20:10	-38.8	Dark	Up	36.6	194.1	Up	10:05:10 - 10:35:10	-4083
Kingman/Dolan Springs	10:20:10	-39.1	Dark	Up	36.8	193.9	Up	10:05:10 - 10:35:10	-4088
Lake Havasu City	10:20:13	-39.6	Dark	Down	37.5	193.7	Up	10:05:13 - 10:35:13	-4120
Parker	10:20:13	-39.7	Dark	Down	37.9	193.8	Up	10:05:13 - 10:35:13	-4144
Calipatria	10:20:18	-41.1	Dark	Down	39.1	192.6	Up	10:05:18 - 10:35:18	-4146
Blythe	10:20:14	-40.2	Dark	Down	38.4	193.6	Up	10:05:14 - 10:35:14	-4163
Dunrhomin	10:19:41	-30.6	Dark	Up	29.8	202.6	Low	10:04:41 - 10:34:41	-4212
Yuma	10:20:15	-40.6	Dark	Down	39.3	193.7	Up	10:05:15 - 10:35:15	-4223
George/Scottsdale	10:20:06	-38.1	Dark	Up	37.8	196.8	Up	10:05:06 - 10:35:06	-4302