RECON: TNO occultation with 386723

Event between (386723) 09YE7 and star GA0840:00465490 with event index number of 2292175

Geocentric closest approach at 2022/09/25 09:58:22 UTC

J2000 position of star is 04:52:48.1 -05:42:48
Equinox of date position of star is 04:53:51.9 -05:40:43
Stellar brightness G=12.9, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 105 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=21.9

[RECON map]
TNO is 50.7 AU from the Sun and 50.3 AU from the Earth.
The TNO is moving 14.3 km/sec on the sky relative to the star, or, 1.4 arcsec/hr.
The 1-sigma error in the time of the event is 203 seconds.
The 1-sigma cross-track error in the shadow position is 3034 km.
The sky-plane scale is 36500.1 km/arcsec.

The TNO has an absolute magnitude Hv=4.7
Diameter=701.5 km assuming a 5% albedo -- 49.0 sec chord
Diameter=286.4 km assuming a 30% albedo -- 20.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 386723, (2022/09/25 09:58UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:37.9 -08:10:37  0.1  5.94 100
67Bet Eri      05:08:58.1 -05:03:31  2.8  3.80 102
61Ome Eri      04:54:00.8 -05:24:59  4.5  0.26 105
PPM 187431     04:53:53.3 -05:15:00  8.0  0.43 105
61Ome Eri      04:54:00.8 -05:24:59  4.5  0.26 105
386723         04:53:55.1 -05:40:37 12.9       105
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 4.4 sigma about the mid-time.
The median site spacing is 4.4 km RECON observability=1.0 and success probability=5.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Klamath Falls 09:54:51 -41.2 Dark Down 28.7 130.5 Low 09:39:51 - 10:09:51 -4332
Chiloquin 09:54:51 -41.0 Dark Down 28.4 130.6 Low 09:39:51 - 10:09:51 -4333
CPSLO 09:55:31 -45.5 Dark Down 33.9 128.5 Up 09:40:31 - 10:10:31 -4334
Fall River/Burney 09:54:58 -41.9 Dark Down 29.7 130.4 Low 09:39:58 - 10:09:58 -4337
Quincy 09:55:02 -42.5 Dark Down 30.7 130.4 Up 09:40:02 - 10:10:02 -4349
Greenville 09:55:03 -42.3 Dark Down 30.6 130.5 Up 09:40:03 - 10:10:03 -4351
Gimple 09:55:03 -42.3 Dark Down 30.6 130.5 Up 09:40:03 - 10:10:03 -4356
La Pine/Gilchrist 09:54:40 -39.9 Dark Down 27.9 131.3 Low 09:39:40 - 10:09:40 -4370
Susanville 09:54:58 -42.0 Dark Down 30.5 130.8 Up 09:39:58 - 10:09:58 -4370
Portola 09:55:02 -42.3 Dark Down 31.0 130.8 Up 09:40:02 - 10:10:02 -4375
Oregon Observatory 09:54:43 -39.8 Dark Down 27.8 131.5 Low 09:39:43 - 10:09:43 -4376
Sisters 09:54:39 -39.5 Dark Down 27.4 131.5 Low 09:39:39 - 10:09:39 -4376
Victoria 09:54:17 -36.9 Dark Down 23.6 131.2 Low 09:39:17 - 10:09:17 -4378
Bend 09:54:40 -39.6 Dark Down 27.7 131.7 Low 09:39:40 - 10:09:40 -4386
North Lake 09:54:41 -40.0 Dark Down 28.5 131.7 Low 09:39:41 - 10:09:41 -4394
Redmond 09:54:37 -39.3 Dark Down 27.6 131.9 Low 09:39:37 - 10:09:37 -4397
Paisley 09:54:45 -40.2 Dark Down 29.1 131.9 Low 09:39:45 - 10:09:45 -4405
Carson City 09:55:05 -42.4 Dark Down 31.9 131.1 Up 09:40:05 - 10:10:05 -4407
Gardnerville 09:55:05 -42.5 Dark Down 32.0 131.1 Up 09:40:05 - 10:10:05 -4408
Lakeview 09:54:50 -40.5 Dark Down 29.5 131.9 Low 09:39:50 - 10:09:50 -4409
Reno 09:55:02 -42.1 Dark Down 31.6 131.3 Up 09:40:02 - 10:10:02 -4409
Cedarville 09:54:53 -40.9 Dark Down 30.1 131.8 Up 09:39:53 - 10:09:53 -4411
Maupin 09:54:29 -38.6 Dark Down 27.1 132.3 Low 09:39:29 - 10:09:29 -4419
The Dalles 09:54:31 -38.3 Dark Down 26.7 132.3 Low 09:39:31 - 10:09:31 -4421
Lee Vining 09:55:10 -42.9 Dark Down 33.1 131.2 Up 09:40:10 - 10:10:10 -4437
Yerington 09:55:07 -42.2 Dark Down 32.4 131.6 Up 09:40:07 - 10:10:07 -4443
Goldendale 09:54:26 -38.0 Dark Down 26.8 132.8 Low 09:39:26 - 10:09:26 -4444
Wildwood 09:55:35 -45.1 Dark Down 36.0 129.8 Up 09:40:35 - 10:10:35 -4459
Hawthorne 09:55:06 -42.2 Dark Down 33.0 131.9 Up 09:40:06 - 10:10:06 -4471
Yakima 09:54:20 -37.3 Dark Down 26.4 133.3 Low 09:39:20 - 10:09:20 -4473
Toppenish/White Swan 09:54:25 -37.4 Dark Down 26.6 133.4 Low 09:39:25 - 10:09:25 -4477
Bishop 09:55:13 -42.9 Dark Down 33.9 131.6 Up 09:40:13 - 10:10:13 -4478
Ellensburg 09:54:21 -37.0 Dark Down 26.1 133.4 Low 09:39:21 - 10:09:21 -4481
Wenatchee 09:54:17 -36.6 Dark Down 25.9 133.8 Low 09:39:17 - 10:09:17 -4501
Manson/Chelan 09:54:15 -36.1 Dark Down 25.7 134.1 Low 09:39:15 - 10:09:15 -4519
Pasco 09:54:21 -36.9 Dark Down 27.3 134.5 Low 09:39:21 - 10:09:21 -4540
Brewster 09:54:15 -35.8 Dark Down 25.7 134.5 Low 09:39:15 - 10:09:15 -4543
PNWRO 09:54:22 -37.0 Dark Down 27.6 134.7 Low 09:39:22 - 10:09:22 -4547
Tonopah 09:55:06 -41.7 Dark Down 34.1 133.1 Up 09:40:06 - 10:10:06 -4554
Okanogan 09:54:08 -35.5 Dark Down 25.6 134.8 Low 09:39:08 - 10:09:08 -4558
Tonasket 09:54:09 -35.2 Dark Down 25.4 135.0 Low 09:39:09 - 10:09:09 -4574
Beatty 09:55:12 -42.2 Dark Down 35.2 133.0 Up 09:40:12 - 10:10:12 -4578
Oliver 09:54:05 -34.9 Dark Down 25.0 135.1 Low 09:39:05 - 10:09:05 -4578
Idyllwild 09:55:33 -44.1 Dark Down 37.4 131.4 Up 09:40:33 - 10:10:33 -4579
Peachland 09:54:01 -34.5 Dark Down 24.5 135.0 Low 09:39:01 - 10:09:01 -4581
Summerland 09:54:01 -34.6 Dark Down 24.6 135.1 Low 09:39:01 - 10:09:01 -4582
Anarchist Mountain Observatory 09:54:05 -35.0 Dark Down 25.2 135.2 Low 09:39:05 - 10:09:05 -4583
Penticton 09:54:03 -34.6 Dark Down 24.8 135.2 Low 09:39:03 - 10:09:03 -4586
Kelowna 09:54:01 -34.3 Dark Down 24.6 135.4 Low 09:39:01 - 10:09:01 -4598
Clarence Fulton 09:54:00 -34.0 Dark Down 24.3 135.6 Low 09:39:00 - 10:09:00 -4616
Indian Springs 09:55:12 -41.7 Dark Down 36.0 133.9 Up 09:40:12 - 10:10:12 -4645
Calipatria 09:55:33 -43.7 Dark Down 38.5 132.2 Up 09:40:33 - 10:10:33 -4661
Henderson 09:55:18 -41.6 Dark Down 36.8 134.3 Up 09:40:18 - 10:10:18 -4691
Laughlin/Bullhead City 09:55:17 -41.9 Dark Down 37.7 134.2 Up 09:40:17 - 10:10:17 -4718
Mohave Valley 09:55:19 -42.1 Dark Down 37.9 134.1 Up 09:40:19 - 10:10:19 -4719
Blythe 09:55:28 -42.8 Dark Down 38.8 133.4 Up 09:40:28 - 10:10:28 -4721
Yuma 09:55:34 -43.4 Dark Down 39.4 132.8 Up 09:40:34 - 10:10:34 -4722
Lake Havasu City 09:55:22 -42.1 Dark Down 38.3 134.1 Up 09:40:22 - 10:10:22 -4737
Parker 09:55:24 -42.3 Dark Down 38.6 134.0 Up 09:40:24 - 10:10:24 -4739
Kingman/Dolan Springs 09:55:17 -41.5 Dark Down 38.0 134.8 Up 09:40:17 - 10:10:17 -4752
Patrick 09:55:14 -41.3 Dark Down 37.9 135.1 Up 09:40:14 - 10:10:14 -4764
George/Scottsdale 09:55:22 -40.9 Dark Down 40.3 136.3 Up 09:40:22 - 10:10:22 -4908
Dunrhomin 09:54:23 -33.0 Dark Down 38.4 146.8 Up 09:39:23 - 10:09:23 -5338

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 386723, (2022/09/25 09:58UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1  5.94 100
67Bet Eri      05:07:50.8 -05:05:13  2.8  3.80 102
61Ome Eri      04:52:53.7 -05:27:09  4.5  0.26 105
PPM 187431     04:52:46.1 -05:17:11  8.0  0.43 105
61Ome Eri      04:52:53.7 -05:27:09  4.5  0.26 105
386723         04:52:48.1 -05:42:48 12.9       105
Positions are for J2000

Event circumstances last updated at 2021/09/01 01:01:14 UT

Marc W. Buie, Southwest Research Institute

RECON