RECON: TNO occultation with 00WT169

Event between 00WT169 and star GA1120:01863355 with event index number of 1022105

Geocentric closest approach at 2020/12/11 12:18:57 UTC

J2000 position of star is 06:10:23.9 +22:51:19
Equinox of date position of star is 06:11:37.0 +22:51:00
Stellar brightness G=13.2, use SENSEUP=32
Star is 124 degrees from the moon. Moon is 14% illuminated.
TNO apparent brightness V=26.5

[RECON map]
TNO is 45.1 AU from the Sun and 44.1 AU from the Earth.
The TNO is moving 25.1 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 306 seconds.
The 1-sigma cross-track error in the shadow position is 1615 km.
The sky-plane scale is 31996.6 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=361.4 km assuming a 5% albedo -- 2.4 sec chord
Diameter=147.5 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 00WT169, (2020/12/11 12:19UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:18.4 +07:24:33  0.4 15.88 127
Alhena         06:38:55.3 +16:22:47  1.9  9.11 117
3 Gem          06:11:00.4 +23:06:29  5.5  0.30 124
6 Gem          06:13:35.4 +22:54:07  8.4  0.45 123
3 Gem          06:11:00.4 +23:06:29  5.5  0.30 124
PPM 095558     06:12:14.9 +22:48:42 11.0  0.14 124
00WT169        06:11:40.1 +22:50:59 13.2       124
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 21.9 km RECON observability=1.0 and success probability=13.1%
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 12:16:50 -32.4 Dark Up 40.8 256.4 Up 12:01:50 - 12:31:50 3412
Peachland 12:16:50 -32.7 Dark Up 41.2 256.4 Up 12:01:50 - 12:31:50 3359
Summerland 12:16:49 -32.6 Dark Up 41.2 256.6 Up 12:01:49 - 12:31:49 3349
Penticton 12:16:49 -32.6 Dark Up 41.1 256.8 Up 12:01:49 - 12:31:49 3346
Oliver 12:16:48 -32.6 Dark Up 41.2 257.1 Up 12:01:48 - 12:31:48 3316
Anarchist Mountain Observatory 12:16:47 -32.4 Dark Up 41.1 257.4 Up 12:01:47 - 12:31:47 3306
Tonasket 12:16:46 -32.5 Dark Up 41.2 257.6 Up 12:01:46 - 12:31:46 3277
Okanogan 12:16:46 -32.6 Dark Up 41.4 257.7 Up 12:01:46 - 12:31:46 3245
Brewster 12:16:45 -32.7 Dark Up 41.6 257.8 Up 12:01:45 - 12:31:45 3216
Manson/Chelan 12:16:46 -33.0 Dark Up 41.9 257.6 Up 12:01:46 - 12:31:46 3189
Victoria 12:16:53 -35.1 Dark Up 43.8 254.2 Up 12:01:53 - 12:31:53 3170
Entiat 12:16:44 -33.1 Dark Up 42.0 257.8 Up 12:01:44 - 12:31:44 3168
Wenatchee 12:16:45 -33.1 Dark Up 42.1 257.9 Up 12:01:45 - 12:31:45 3144
Ellensburg 12:16:44 -33.3 Dark Up 42.3 258.1 Up 12:01:44 - 12:31:44 3102
Pasco 12:16:39 -32.3 Dark Up 41.5 259.9 Up 12:01:39 - 12:31:39 3071
Yakima 12:16:43 -33.3 Dark Up 42.4 258.4 Up 12:01:43 - 12:31:43 3066
PNWRO 12:16:38 -32.2 Dark Up 41.4 260.3 Up 12:01:38 - 12:31:38 3055
Toppenish/White Swan 12:16:42 -33.2 Dark Up 42.4 258.8 Up 12:01:42 - 12:31:42 3050
Goldendale 12:16:41 -33.5 Dark Up 42.8 258.9 Up 12:01:41 - 12:31:41 2991
The Dalles 12:16:41 -33.8 Dark Up 43.1 258.8 Up 12:01:41 - 12:31:41 2962
Maupin 12:16:40 -33.7 Dark Up 43.1 259.3 Up 12:01:40 - 12:31:40 2926
Niwot 12:16:01 -21.6 Dark Up 31.8 274.3 Up 12:01:01 - 12:31:01 2919
SwRI 12:16:01 -21.7 Dark Up 31.8 274.3 Up 12:01:01 - 12:31:01 2907
Redmond 12:16:38 -33.8 Dark Up 43.3 260.0 Up 12:01:38 - 12:31:38 2842
Sisters 12:16:39 -34.0 Dark Up 43.6 259.7 Up 12:01:39 - 12:31:39 2834
Bend 12:16:38 -33.9 Dark Up 43.4 260.1 Up 12:01:38 - 12:31:38 2819
Oregon Observatory 12:16:38 -33.9 Dark Up 43.6 260.2 Up 12:01:38 - 12:31:38 2800
La Pine/Gilchrist 12:16:37 -34.0 Dark Up 43.6 260.3 Up 12:01:37 - 12:31:37 2780
North Lake 12:16:35 -33.6 Dark Up 43.3 261.2 Up 12:01:35 - 12:31:35 2755
Paisley 12:16:33 -33.3 Dark Up 43.1 262.0 Up 12:01:33 - 12:31:33 2714
Lakeview 12:16:32 -33.1 Dark Up 43.0 262.6 Up 12:01:32 - 12:31:32 2672
Klamath Falls 12:16:35 -34.2 Dark Up 44.1 261.4 Up 12:01:35 - 12:31:35 2638
Cedarville 12:16:30 -33.0 Dark Up 43.0 263.3 Up 12:01:30 - 12:31:30 2615
Fall River/Burney 12:16:31 -33.9 Dark Up 44.0 262.9 Up 12:01:31 - 12:31:31 2537
Susanville 12:16:28 -33.3 Dark Up 43.5 264.0 Up 12:01:28 - 12:31:28 2498
Gimple 12:16:28 -33.4 Dark Up 43.7 264.1 Up 12:01:28 - 12:31:28 2466
Greenville 12:16:28 -33.5 Dark Up 43.7 264.0 Up 12:01:28 - 12:31:28 2464
Portola 12:16:26 -33.1 Dark Up 43.4 264.7 Up 12:01:26 - 12:31:26 2446
Quincy 12:16:27 -33.5 Dark Up 43.8 264.2 Up 12:01:27 - 12:31:27 2445
Reno 12:16:24 -32.6 Dark Up 42.9 265.4 Up 12:01:24 - 12:31:24 2438
Carson City 12:16:23 -32.6 Dark Up 43.0 265.7 Up 12:01:23 - 12:31:23 2405
Yerington 12:16:21 -32.1 Dark Up 42.5 266.3 Up 12:01:21 - 12:31:21 2404
Gardnerville 12:16:23 -32.5 Dark Up 42.9 266.0 Up 12:01:23 - 12:31:23 2383
Hawthorne 12:16:19 -31.6 Dark Up 42.1 267.1 Up 12:01:19 - 12:31:19 2374
Tonopah 12:16:16 -30.5 Dark Up 41.0 268.4 Up 12:01:16 - 12:31:16 2370
Lee Vining 12:16:20 -31.9 Dark Up 42.5 267.3 Up 12:01:20 - 12:31:20 2307
Indian Springs 12:16:09 -29.1 Dark Up 39.8 270.6 Up 12:01:09 - 12:31:09 2273
Beatty 12:16:12 -30.0 Dark Up 40.7 269.7 Up 12:01:12 - 12:31:12 2273
Bishop 12:16:17 -31.3 Dark Up 42.0 268.3 Up 12:01:17 - 12:31:17 2270
Henderson 12:16:07 -28.5 Dark Up 39.3 271.5 Up 12:01:07 - 12:31:07 2243
Patrick 12:16:03 -27.5 Dark Up 38.4 272.6 Up 12:01:03 - 12:31:03 2217
DCO 12:16:01 -26.8 Dark Up 37.8 273.2 Up 12:01:01 - 12:31:01 2210
Kingman/Dolan Springs 12:16:03 -27.6 Dark Up 38.5 272.7 Up 12:01:03 - 12:31:03 2190
Searchlight/Boulder City 12:16:05 -28.3 Dark Up 39.2 272.0 Up 12:01:05 - 12:31:05 2190
Laughlin/Bullhead City 12:16:04 -28.0 Dark Up 38.9 272.4 Up 12:01:04 - 12:31:04 2172
Mohave Valley 12:16:03 -27.9 Dark Up 38.9 272.6 Up 12:01:03 - 12:31:03 2146
George/Scottsdale 12:15:55 -25.5 Dark Up 36.6 274.9 Up 12:00:55 - 12:30:55 2118
Lake Havasu City 12:16:02 -27.7 Dark Up 38.7 273.1 Up 12:01:02 - 12:31:02 2115
Parker 12:16:01 -27.6 Dark Up 38.6 273.4 Up 12:01:01 - 12:31:01 2082
Blythe 12:16:01 -27.7 Dark Up 38.9 273.6 Up 12:01:01 - 12:31:01 2021
CPSLO 12:16:17 -32.9 Dark Up 43.9 268.8 Up 12:01:17 - 12:31:17 2005
Idyllwild 12:16:05 -29.5 Dark Up 40.6 272.4 Up 12:01:05 - 12:31:05 1968
Wildwood 12:16:10 -31.1 Dark Up 42.2 271.1 Up 12:01:10 - 12:31:10 1946
Calipatria 12:16:02 -28.4 Dark Up 39.6 273.6 Up 12:01:02 - 12:31:02 1944
Yuma 12:15:59 -27.6 Dark Up 38.8 274.3 Up 12:00:59 - 12:30:59 1930

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 00WT169, (2020/12/11 12:19UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 15.88 127
Alhena         06:37:42.8 +16:23:57  1.9  9.11 117
3 Gem          06:09:44.0 +23:06:48  5.5  0.30 124
6 Gem          06:12:19.1 +22:54:30  8.4  0.45 123
3 Gem          06:09:44.0 +23:06:48  5.5  0.30 124
PPM 095558     06:10:58.7 +22:49:04 11.0  0.14 124
00WT169        06:10:23.9 +22:51:19 13.2       124
Positions are for J2000

Event circumstances last updated at 2020/02/06 19:24:41 UT

Marc W. Buie, Southwest Research Institute

RECON