RECON: TNO occultation with 17OF69

Event between 17OF69 and star GA0840:19237938 with event index number of 2167543

Geocentric closest approach at 2022/09/12 08:43:32 UTC

J2000 position of star is 20:26:20.2 -04:52:47
Equinox of date position of star is 20:27:31.0 -04:48:19
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 69 degrees from the moon. Moon is 95% illuminated.
TNO apparent brightness V=20.7

[RECON map]
TNO is 43.1 AU from the Sun and 42.3 AU from the Earth.
The TNO is moving 18.2 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 96 seconds.
The 1-sigma cross-track error in the shadow position is 1574 km.
The sky-plane scale is 30708.8 km/arcsec.

The TNO has an absolute magnitude Hv=4.3
Diameter=843.4 km assuming a 5% albedo -- 46.3 sec chord
Diameter=344.3 km assuming a 30% albedo -- 18.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 17OF69, (2022/09/12 08:41UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:54.0 -29:30:05  1.2 43.44  44
Tarazed        19:47:20.3 +10:40:12  2.7 18.43  78
PPM 204030     20:26:53.5 -02:43:31  6.0  2.09  69
PPM 204079     20:29:10.7 -05:00:11  7.9  0.46  68
PPM 204054     20:27:59.1 -04:53:17  9.5  0.14  68
17OF69         20:27:32.1 -04:48:15 16.4        68
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 37.9 km RECON observability=0.7 and success probability=4.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 08:38:36 -34.5 Dark Up 17.8 237.9 Really Low 08:30:09 - 08:47:04 -3381
Kelowna 08:38:34 -35.2 Dark Up 17.7 238.9 Really Low 08:30:06 - 08:47:01 -3478
Peachland 08:38:35 -35.3 Dark Up 17.9 238.6 Really Low 08:30:07 - 08:47:02 -3480
Summerland 08:38:34 -35.4 Dark Up 17.9 238.8 Really Low 08:30:06 - 08:47:01 -3497
Victoria 08:38:40 -37.0 Dark Up 20.6 235.8 Low 08:30:12 - 08:47:07 -3499
Penticton 08:38:35 -35.5 Dark Up 17.9 238.9 Really Low 08:30:07 - 08:47:02 -3506
Oliver 08:38:32 -35.8 Dark Up 18.1 239.0 Really Low 08:30:05 - 08:47:00 -3538
Sleaford 08:38:19 -30.0 Dark Up 9.1 249.8 Really Low 08:29:51 - 08:46:46 -3549
Anarchist Mountain Observatory 08:38:31 -36.0 Dark Up 18.1 239.2 Really Low 08:30:04 - 08:46:59 -3559
Tonasket 08:38:32 -36.3 Dark Up 18.3 239.2 Really Low 08:30:04 - 08:46:59 -3586
Okanogan 08:38:32 -36.6 Dark Up 18.5 239.2 Really Low 08:30:05 - 08:47:00 -3614
Brewster 08:38:32 -36.9 Dark Up 18.8 239.1 Really Low 08:30:04 - 08:46:59 -3634
Manson/Chelan 08:38:32 -37.2 Dark Up 19.1 238.8 Really Low 08:30:04 - 08:46:59 -3644
Wenatchee 08:38:33 -37.7 Dark Up 19.5 238.8 Really Low 08:30:05 - 08:47:00 -3685
Ellensburg 08:38:32 -38.1 Dark Up 19.8 238.8 Really Low 08:30:05 - 08:47:00 -3718
Yakima 08:38:33 -38.5 Dark Up 20.0 238.9 Low 08:30:05 - 08:47:00 -3756
Toppenish/White Swan 08:38:30 -38.7 Dark Up 20.0 239.1 Low 08:30:02 - 08:46:57 -3781
Goldendale 08:38:31 -39.3 Dark Up 20.6 238.9 Low 08:30:04 - 08:46:59 -3822
The Dalles 08:38:31 -39.6 Dark Up 20.9 238.7 Low 08:30:04 - 08:46:59 -3833
PNWRO 08:38:27 -38.8 Dark Up 19.3 240.5 Really Low 08:30:00 - 08:46:55 -3855
Maupin 08:38:31 -40.0 Dark Up 21.1 238.9 Low 08:30:04 - 08:46:59 -3876
Sisters 08:38:31 -40.9 Dark Up 21.8 238.8 Low 08:30:04 - 08:46:59 -3946
Bend 08:38:31 -41.1 Dark Up 21.8 239.1 Low 08:30:04 - 08:46:59 -3976
Oregon Observatory 08:38:31 -41.3 Dark Up 22.0 239.0 Low 08:30:04 - 08:46:59 -3989
North Lake 08:38:29 -41.8 Dark Up 21.9 239.7 Low 08:30:02 - 08:46:57 -4066
Chiloquin 08:38:29 -42.6 Dark Up 22.9 239.1 Low 08:30:02 - 08:46:57 -4104
Klamath Falls 08:38:29 -43.0 Dark Up 23.0 239.3 Low 08:30:02 - 08:46:57 -4139
Lakeview 08:38:27 -42.8 Dark Up 22.1 240.5 Low 08:29:59 - 08:46:54 -4185
Cedarville 08:38:25 -43.4 Dark Up 22.3 240.9 Low 08:29:58 - 08:46:53 -4254
Fall River/Burney 08:38:28 -44.1 Dark Up 23.4 240.1 Low 08:30:01 - 08:46:56 -4266
Susanville 08:38:25 -44.5 Dark Up 23.2 240.9 Low 08:29:58 - 08:46:53 -4350
Greenville 08:38:27 -44.9 Dark Up 23.5 240.8 Low 08:29:59 - 08:46:54 -4368
Gimple 08:38:25 -44.9 Dark Up 23.5 240.8 Low 08:29:58 - 08:46:53 -4371
Quincy 08:38:26 -45.1 Dark Up 23.6 240.8 Low 08:29:58 - 08:46:53 -4388
Portola 08:38:25 -45.1 Dark Up 23.4 241.3 Low 08:29:58 - 08:46:53 -4415
Reno 08:38:23 -45.2 Dark Up 23.1 241.9 Low 08:29:55 - 08:46:50 -4460
Carson City 08:38:22 -45.6 Dark Up 23.2 242.0 Low 08:29:55 - 08:46:50 -4497
Gardnerville 08:38:23 -45.8 Dark Up 23.3 242.2 Low 08:29:55 - 08:46:50 -4523
Yerington 08:38:22 -45.6 Dark Up 22.9 242.6 Low 08:29:55 - 08:46:50 -4535
Hawthorne 08:38:19 -46.0 Dark Up 22.7 243.2 Low 08:29:51 - 08:46:46 -4597
Lee Vining 08:38:21 -46.6 Dark Up 23.3 243.0 Low 08:29:53 - 08:46:48 -4639
Tonopah 08:38:16 -46.1 Dark Up 21.9 244.4 Low 08:29:49 - 08:46:44 -4685
Bishop 08:38:19 -47.0 Dark Up 23.1 243.8 Low 08:29:51 - 08:46:46 -4721
Dunrhomin 08:37:58 -39.9 Dark Up 12.5 252.4 Really Low 08:29:30 - 08:46:25 -4758
CU-SBO 08:38:00 -40.2 Dark Up 12.6 252.4 Really Low 08:29:32 - 08:46:27 -4782
Beatty 08:38:15 -47.0 Dark Up 22.1 245.2 Low 08:29:48 - 08:46:43 -4816
Indian Springs 08:38:12 -47.0 Dark Up 21.5 246.1 Low 08:29:44 - 08:46:39 -4880
Henderson 08:38:11 -47.3 Dark Up 21.2 246.8 Low 08:29:43 - 08:46:38 -4955
Wildwood 08:38:18 -50.2 Dark Up 24.6 244.9 Low 08:29:50 - 08:46:45 -5048
Patrick 08:38:09 -47.5 Dark Up 20.6 247.8 Low 08:29:41 - 08:46:36 -5051
Laughlin/Bullhead City 08:38:11 -48.0 Dark Up 21.2 247.4 Low 08:29:43 - 08:46:38 -5057
Kingman/Dolan Springs 08:38:09 -47.8 Dark Up 20.8 247.7 Low 08:29:41 - 08:46:36 -5069
Mohave Valley 08:38:11 -48.2 Dark Up 21.3 247.5 Low 08:29:43 - 08:46:38 -5085
Lake Havasu City 08:38:09 -48.5 Dark Up 21.3 247.8 Low 08:29:41 - 08:46:36 -5134
Idyllwild 08:38:14 -50.0 Dark Up 23.4 246.4 Low 08:29:47 - 08:46:42 -5142
Parker 08:38:09 -48.8 Dark Up 21.4 247.9 Low 08:29:41 - 08:46:36 -5171
Calipatria 08:38:12 -50.2 Dark Up 22.7 247.5 Low 08:29:44 - 08:46:39 -5241
George/Scottsdale 08:38:05 -48.3 Dark Up 19.7 249.7 Really Low 08:29:37 - 08:46:32 -5283
Yuma 08:38:11 -50.2 Dark Up 22.2 248.2 Low 08:29:43 - 08:46:38 -5312

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 17OF69, (2022/09/12 08:41UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 43.44  44
Tarazed        19:46:15.6 +10:36:48  2.7 18.43  78
PPM 204030     20:25:42.5 -02:48:02  6.0  2.09  69
PPM 204079     20:27:58.7 -05:04:45  7.9  0.46  68
PPM 204054     20:26:47.2 -04:57:50  9.5  0.14  68
17OF69         20:26:20.2 -04:52:47 16.4        69
Positions are for J2000

Event circumstances last updated at 2022/05/13 23:10:04 UT

Marc W. Buie, Southwest Research Institute

RECON