RECON: TNO occultation with 250112

Event between (250112) 02KY14 and star GA0960:02923724 with event index number of 1009222

Geocentric closest approach at 2020/12/07 08:18:46 UTC

J2000 position of star is 07:26:48.4 +07:01:20
Equinox of date position of star is 07:27:56.0 +06:58:44
Stellar brightness G=16.2, use SENSEUP=128
Star is 49 degrees from the moon. Moon is 58% illuminated.
TNO apparent brightness V=21.2

[RECON map]
TNO is 13.9 AU from the Sun and 13.1 AU from the Earth.
The TNO is moving 18.5 km/sec on the sky relative to the star, or, 7.0 arcsec/hr.
The 1-sigma error in the time of the event is 76 seconds.
The 1-sigma cross-track error in the shadow position is 764 km.
The sky-plane scale is 9537.5 km/arcsec.

The TNO has an absolute magnitude Hv=9.6
Diameter=72.4 km assuming a 5% albedo -- 3.9 sec chord
Diameter=29.6 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 250112, (2020/12/07 08:19UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:35.6 +27:58:26  1.1 21.45  44
Alhena         06:38:55.3 +16:22:47  1.9 15.23  59
5Eta CMi       07:29:09.6 +06:53:52  5.4  0.32  48
PPM 152664     07:28:17.1 +07:17:30  8.4  0.32  48
PPM 152625     07:27:01.1 +07:06:09  9.2  0.26  49
PPM 152674     07:28:31.9 +06:46:27 10.9  0.25  49
250112         07:27:56.0 +06:58:44 16.2        48
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 18.1 km RECON observability=1.0 and success probability=0.0%
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 08:19:51 -61.8 Dark Up 40.3 140.2 Up 08:12:59 - 08:26:43 5298
Kelowna 08:19:52 -62.2 Dark Up 40.5 139.8 Up 08:13:00 - 08:26:44 5272
Peachland 08:19:54 -62.3 Dark Up 40.5 139.4 Up 08:13:02 - 08:26:46 5269
Summerland 08:19:53 -62.4 Dark Up 40.6 139.4 Up 08:13:01 - 08:26:45 5257
Penticton 08:19:53 -62.5 Dark Up 40.7 139.5 Up 08:13:01 - 08:26:45 5251
Victoria 08:20:09 -64.0 Dark Up 39.8 134.5 Up 08:13:17 - 08:27:01 5239
Oliver 08:19:55 -62.8 Dark Up 41.0 139.3 Up 08:13:03 - 08:26:47 5225
Anarchist Mountain Observatory 08:19:54 -63.0 Dark Up 41.2 139.5 Up 08:13:02 - 08:26:46 5210
Tonasket 08:19:56 -63.3 Dark Up 41.4 139.2 Up 08:13:04 - 08:26:48 5189
Okanogan 08:19:57 -63.6 Dark Up 41.6 138.8 Up 08:13:05 - 08:26:49 5166
Brewster 08:19:59 -63.9 Dark Up 41.7 138.4 Up 08:13:07 - 08:26:51 5150
Manson/Chelan 08:20:01 -64.2 Dark Up 41.7 137.9 Up 08:13:09 - 08:26:53 5141
Entiat 08:20:01 -64.4 Dark Up 41.8 137.7 Up 08:13:09 - 08:26:53 5125
Wenatchee 08:20:03 -64.7 Dark Up 42.0 137.4 Up 08:13:11 - 08:26:55 5108
Ellensburg 08:20:05 -65.1 Dark Up 42.2 136.9 Up 08:13:13 - 08:26:57 5081
Yakima 08:20:06 -65.5 Dark Up 42.5 136.6 Up 08:13:14 - 08:26:58 5051
Toppenish/White Swan 08:20:06 -65.7 Dark Up 42.7 136.7 Up 08:13:14 - 08:26:58 5032
Pasco 08:20:01 -65.5 Dark Up 43.4 138.1 Up 08:13:09 - 08:26:53 5001
Goldendale 08:20:09 -66.3 Dark Up 42.9 135.9 Up 08:13:17 - 08:27:01 4997
The Dalles 08:20:11 -66.6 Dark Up 42.9 135.3 Up 08:13:19 - 08:27:03 4986
PNWRO 08:20:02 -65.7 Dark Up 43.7 138.3 Up 08:13:10 - 08:26:54 4978
Maupin 08:20:12 -66.9 Dark Up 43.3 135.1 Up 08:13:20 - 08:27:04 4952
Sisters 08:20:16 -67.9 Dark Up 43.6 134.0 Up 08:13:24 - 08:27:08 4893
Redmond 08:20:15 -67.8 Dark Up 43.9 134.4 Up 08:13:23 - 08:27:07 4884
Bend 08:20:16 -68.1 Dark Up 43.9 134.1 Up 08:13:24 - 08:27:08 4869
Oregon Observatory 08:20:17 -68.3 Dark Up 44.0 133.9 Up 08:13:25 - 08:27:09 4858
La Pine/Gilchrist 08:20:18 -68.5 Dark Up 44.1 133.6 Up 08:13:26 - 08:27:10 4843
North Lake 08:20:17 -68.8 Dark Up 44.7 134.1 Up 08:13:25 - 08:27:09 4798
Paisley 08:20:17 -69.2 Dark Up 45.3 134.1 Up 08:13:25 - 08:27:09 4748
Klamath Falls 08:20:23 -69.9 Dark Up 45.0 132.3 Up 08:13:31 - 08:27:15 4732
Lakeview 08:20:18 -69.7 Dark Up 45.8 133.9 Up 08:13:26 - 08:27:10 4703
Cedarville 08:20:20 -70.2 Dark Up 46.3 133.7 Up 08:13:28 - 08:27:12 4646
Fall River/Burney 08:20:26 -71.0 Dark Up 46.0 131.9 Up 08:13:34 - 08:27:18 4629
Susanville 08:20:24 -71.4 Dark Up 46.8 132.3 Up 08:13:32 - 08:27:16 4563
Greenville 08:20:26 -71.7 Dark Up 46.8 131.7 Up 08:13:34 - 08:27:18 4546
Gimple 08:20:26 -71.7 Dark Up 46.9 131.8 Up 08:13:34 - 08:27:18 4544
Quincy 08:20:27 -71.9 Dark Up 47.0 131.5 Up 08:13:35 - 08:27:19 4528
Portola 08:20:25 -71.9 Dark Up 47.3 132.0 Up 08:13:33 - 08:27:17 4509
Reno 08:20:24 -72.0 Dark Up 47.9 132.6 Up 08:13:32 - 08:27:16 4475
Carson City 08:20:24 -72.3 Dark Up 48.1 132.3 Up 08:13:32 - 08:27:16 4444
Gardnerville 08:20:25 -72.5 Dark Up 48.3 132.2 Up 08:13:33 - 08:27:17 4422
Yerington 08:20:22 -72.3 Dark Up 48.6 132.9 Up 08:13:30 - 08:27:14 4415
Hawthorne 08:20:22 -72.5 Dark Up 49.2 133.2 Up 08:13:30 - 08:27:14 4366
Lee Vining 08:20:25 -73.2 Dark Up 49.3 132.1 Up 08:13:33 - 08:27:17 4327
Tonopah 08:20:18 -72.4 Dark Up 50.4 134.5 Up 08:13:26 - 08:27:10 4299
Bishop 08:20:24 -73.5 Dark Up 50.2 132.5 Up 08:13:32 - 08:27:16 4260
Niwot 08:19:18 -64.6 Dark Up 54.1 153.1 Up 08:12:26 - 08:26:10 4257
SwRI 08:19:18 -64.8 Dark Up 54.2 152.9 Up 08:12:26 - 08:26:10 4250
Beatty 08:20:18 -73.2 Dark Up 51.4 134.1 Up 08:13:26 - 08:27:10 4188
Indian Springs 08:20:15 -72.9 Dark Up 52.3 135.2 Up 08:13:23 - 08:27:07 4138
CPSLO 08:20:38 -76.1 Dark Up 50.1 127.9 Up 08:13:46 - 08:27:30 4122
Henderson 08:20:13 -73.0 Dark Up 53.0 135.7 Up 08:13:21 - 08:27:05 4077
Searchlight/Boulder City 08:20:14 -73.3 Dark Up 53.5 135.2 Up 08:13:22 - 08:27:06 4025
Patrick 08:20:10 -72.8 Dark Up 54.1 136.6 Up 08:13:18 - 08:27:02 3999
Laughlin/Bullhead City 08:20:14 -73.4 Dark Up 53.9 135.4 Up 08:13:22 - 08:27:06 3990
Kingman/Dolan Springs 08:20:11 -73.1 Dark Up 54.2 136.1 Up 08:13:19 - 08:27:03 3983
Wildwood 08:20:33 -76.3 Dark Up 52.2 129.2 Up 08:13:41 - 08:27:25 3973
Mohave Valley 08:20:14 -73.6 Dark Up 54.1 135.1 Up 08:13:22 - 08:27:06 3966
DCO 08:20:07 -72.6 Dark Up 54.7 137.3 Up 08:13:15 - 08:26:59 3958
Lake Havasu City 08:20:14 -73.7 Dark Up 54.5 135.1 Up 08:13:22 - 08:27:06 3924
Idyllwild 08:20:26 -75.6 Dark Up 53.6 131.2 Up 08:13:34 - 08:27:18 3903
Parker 08:20:14 -73.9 Dark Up 54.8 134.8 Up 08:13:22 - 08:27:06 3891
Blythe 08:20:17 -74.4 Dark Up 55.0 133.8 Up 08:13:25 - 08:27:09 3849
Calipatria 08:20:22 -75.3 Dark Up 54.7 132.1 Up 08:13:30 - 08:27:14 3822
George/Scottsdale 08:20:05 -72.6 Dark Up 56.5 137.8 Up 08:13:13 - 08:26:57 3804
Yuma 08:20:19 -75.0 Dark Up 55.6 132.8 Up 08:13:27 - 08:27:11 3764

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 250112, (2020/12/07 08:19UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 21.45  44
Alhena         06:37:42.8 +16:23:57  1.9 15.23  59
5Eta CMi       07:28:02.1 +06:56:30  5.4  0.32  48
PPM 152664     07:27:09.4 +07:20:07  8.4  0.32  48
PPM 152625     07:25:53.5 +07:08:44  9.2  0.26  49
PPM 152674     07:27:24.4 +06:49:04 10.9  0.25  49
250112         07:26:48.4 +07:01:20 16.2        49
Positions are for J2000

Event circumstances last updated at 2020/12/04 19:29:16 UT

Marc W. Buie, Southwest Research Institute

RECON