RECON: TNO occultation with 470309

Event between (470309) 07JK43 and star GA0960:06359805 with event index number of 2228296

Geocentric closest approach at 2022/03/11 10:11:57 UTC

J2000 position of star is 18:14:43.7 +07:55:54
Equinox of date position of star is 18:15:47.0 +07:56:23
Stellar brightness G=13.8, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 146 degrees from the moon. Moon is 59% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 25.3 AU from the Sun and 25.5 AU from the Earth.
The TNO is moving 23.1 km/sec on the sky relative to the star, or, 4.5 arcsec/hr.
The 1-sigma error in the time of the event is 44 seconds.
The 1-sigma cross-track error in the shadow position is 1038 km.
The sky-plane scale is 18468.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.3
Diameter=209.9 km assuming a 5% albedo -- 9.1 sec chord
Diameter=85.7 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is CENTAURS
 
 
 
 
 
 

Star training set for 470309, (2022/03/11 10:12UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:41.4 +38:48:19  0.0 31.26 114
60Bet Oph      17:44:34.2 +04:33:35  2.8  8.46 148
71 Oph         18:08:22.1 +08:44:18  5.6  2.00 145
PPM 165413     18:14:25.0 +07:47:48  8.3  0.37 146
PPM 165450     18:15:29.5 +07:52:38 10.2  0.10 146
470309         18:15:47.8 +07:56:24 13.8       146
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 10.7 km RECON observability=0.3 and success probability=0.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
CPSLO 10:12:00 -48.0 Dark Up 19.0 93.7 Really Low 10:07:52 - 10:16:08 4403
Fall River/Burney 10:12:30 -44.3 Dark Up 18.1 95.3 Really Low 10:08:22 - 10:16:38 4391
Quincy 10:12:23 -44.9 Dark Up 18.5 95.2 Really Low 10:08:15 - 10:16:31 4390
Greenville 10:12:23 -44.8 Dark Up 18.5 95.2 Really Low 10:08:15 - 10:16:31 4389
Klamath Falls 10:12:33 -43.6 Dark Up 17.7 95.4 Really Low 10:08:25 - 10:16:41 4387
Gimple 10:12:24 -44.7 Dark Up 18.5 95.3 Really Low 10:08:16 - 10:16:32 4386
Chiloquin 10:12:35 -43.4 Dark Up 17.6 95.4 Really Low 10:08:27 - 10:16:43 4384
Portola 10:12:23 -44.7 Dark Up 18.9 95.5 Really Low 10:08:15 - 10:16:31 4378
Susanville 10:12:26 -44.4 Dark Up 18.7 95.5 Really Low 10:08:18 - 10:16:34 4378
Gardnerville 10:12:18 -44.9 Dark Up 19.5 95.6 Really Low 10:08:10 - 10:16:26 4365
Carson City 10:12:21 -44.8 Dark Up 19.4 95.7 Really Low 10:08:13 - 10:16:29 4364
Reno 10:12:23 -44.6 Dark Up 19.4 95.8 Really Low 10:08:15 - 10:16:31 4362
La Pine/Gilchrist 10:12:40 -42.4 Dark Up 17.8 96.1 Really Low 10:08:32 - 10:16:48 4359
Oregon Observatory 10:12:42 -42.2 Dark Up 17.8 96.2 Really Low 10:08:34 - 10:16:50 4354
Cedarville 10:12:31 -43.3 Dark Up 18.9 96.3 Really Low 10:08:23 - 10:16:39 4353
Lee Vining 10:12:14 -45.3 Dark Up 20.1 95.7 Low 10:08:06 - 10:16:22 4352
Sisters 10:12:45 -41.9 Dark Up 17.7 96.2 Really Low 10:08:37 - 10:16:53 4350
North Lake 10:12:38 -42.4 Dark Up 18.2 96.4 Really Low 10:08:30 - 10:16:46 4350
Lakeview 10:12:34 -42.9 Dark Up 18.8 96.4 Really Low 10:08:26 - 10:16:42 4350
Paisley 10:12:36 -42.7 Dark Up 18.6 96.4 Really Low 10:08:28 - 10:16:44 4348
Bend 10:12:42 -42.0 Dark Up 17.9 96.3 Really Low 10:08:34 - 10:16:50 4347
Yerington 10:12:20 -44.6 Dark Up 20.0 96.0 Really Low 10:08:12 - 10:16:28 4347
Redmond 10:12:44 -41.8 Dark Up 18.0 96.5 Really Low 10:08:36 - 10:16:52 4340
Maupin 10:13:05 -41.0 Dark Up 18.0 96.9 Really Low 10:08:57 - 10:17:13 4339
Wildwood 10:11:56 -47.5 Dark Down 20.8 94.5 Low 10:07:48 - 10:16:04 4339
Hawthorne 10:12:18 -44.6 Dark Up 20.4 96.2 Low 10:08:10 - 10:16:26 4334
Bishop 10:12:12 -45.2 Dark Up 20.7 95.9 Low 10:08:04 - 10:16:20 4331
The Dalles 10:13:05 -40.7 Dark Up 17.8 97.0 Really Low 10:08:57 - 10:17:13 4329
Goldendale 10:13:05 -40.4 Dark Up 18.1 97.3 Really Low 10:08:57 - 10:17:13 4314
Victoria 10:13:05 -39.4 Dark Up 16.0 96.2 Really Low 10:08:57 - 10:17:13 4302
Tonopah 10:12:14 -44.1 Dark Down 21.6 96.9 Low 10:08:06 - 10:16:22 4291
Toppenish/White Swan 10:13:05 -39.8 Dark Up 18.3 97.8 Really Low 10:08:57 - 10:17:13 4288
Yakima 10:13:05 -39.7 Dark Up 18.2 97.8 Really Low 10:08:57 - 10:17:13 4287
Beatty 10:12:10 -44.5 Dark Down 22.0 96.8 Low 10:08:02 - 10:16:18 4279
Ellensburg 10:13:05 -39.4 Dark Up 18.1 97.9 Really Low 10:08:57 - 10:17:13 4276
Idyllwild 10:11:54 -46.5 Dark Down 22.4 95.5 Low 10:07:46 - 10:16:02 4275
Wenatchee 10:13:05 -39.0 Dark Up 18.2 98.2 Really Low 10:08:57 - 10:17:13 4259
PNWRO 10:13:05 -39.4 Dark Up 19.4 98.8 Really Low 10:08:57 - 10:17:13 4258
Pasco 10:13:05 -39.3 Dark Up 19.2 98.8 Really Low 10:08:57 - 10:17:13 4258
Manson/Chelan 10:13:05 -38.5 Dark Up 18.2 98.5 Really Low 10:08:57 - 10:17:13 4243
Indian Springs 10:12:09 -44.1 Dark Down 22.9 97.3 Low 10:08:01 - 10:16:17 4242
Calipatria 10:11:52 -46.0 Dark Down 23.4 95.9 Low 10:07:44 - 10:16:00 4229
Brewster 10:13:05 -38.2 Dark Up 18.5 98.9 Really Low 10:08:57 - 10:17:13 4228
Henderson 10:12:07 -43.9 Dark Down 23.6 97.5 Low 10:07:59 - 10:16:15 4218
Okanogan 10:13:05 -37.9 Dark Up 18.5 99.1 Really Low 10:08:57 - 10:17:13 4217
Tonasket 10:13:05 -37.6 Dark Up 18.6 99.3 Really Low 10:08:57 - 10:17:13 4205
Laughlin/Bullhead City 10:12:02 -44.2 Dark Down 24.0 97.4 Low 10:07:54 - 10:16:10 4201
Mohave Valley 10:12:00 -44.4 Dark Down 24.0 97.3 Low 10:07:52 - 10:16:08 4200
Blythe 10:11:55 -45.1 Dark Down 24.1 96.7 Low 10:07:47 - 10:16:03 4196
Anarchist Mountain Observatory 10:13:07 -37.3 Dark Up 18.6 99.5 Really Low 10:08:59 - 10:17:15 4196
Oliver 10:13:07 -37.3 Dark Up 18.4 99.4 Really Low 10:08:59 - 10:17:15 4196
Yuma 10:11:51 -45.7 Dark Down 24.2 96.2 Low 10:07:43 - 10:15:59 4193
Lake Havasu City 10:12:00 -44.4 Dark Down 24.3 97.2 Low 10:07:52 - 10:16:08 4190
Summerland 10:13:08 -37.0 Dark Up 18.3 99.5 Really Low 10:09:00 - 10:17:16 4188
Parker 10:11:58 -44.6 Dark Down 24.3 97.1 Low 10:07:50 - 10:16:06 4188
Penticton 10:13:10 -37.0 Dark Up 18.4 99.5 Really Low 10:09:02 - 10:17:18 4187
Peachland 10:13:09 -36.9 Dark Up 18.2 99.4 Really Low 10:09:01 - 10:17:17 4187
Kingman/Dolan Springs 10:12:02 -43.8 Dark Down 24.4 97.7 Low 10:07:54 - 10:16:10 4183
Kelowna 10:13:10 -36.7 Dark Up 18.4 99.7 Really Low 10:09:02 - 10:17:18 4177
Patrick 10:12:05 -43.6 Dark Down 24.5 98.0 Low 10:07:57 - 10:16:13 4176
Kamloops 10:13:14 -36.5 Dark Up 17.7 99.3 Really Low 10:09:06 - 10:17:22 4176
George/Scottsdale 10:11:58 -43.1 Dark Down 26.4 98.4 Low 10:07:50 - 10:16:06 4091
Dunrhomin 10:12:32 -35.1 Dark Down 30.3 106.6 Up 10:08:24 - 10:16:40 3820
Sleaford 10:13:26 -29.0 Dark Up 26.0 112.1 Low 10:09:18 - 10:17:34 3715

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 470309, (2022/03/11 10:12UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 31.26 114
60Bet Oph      17:43:28.3 +04:34:06  2.8  8.46 148
71 Oph         18:07:18.4 +08:44:03  5.6  2.00 145
PPM 165413     18:13:20.8 +07:47:21  8.3  0.37 146
PPM 165450     18:14:25.4 +07:52:09 10.2  0.10 146
470309         18:14:43.7 +07:55:54 13.8       146
Positions are for J2000

Event circumstances last updated at 2021/12/06 01:47:37 UT

Marc W. Buie, Southwest Research Institute

RECON