RECON: TNO occultation with 02CW224

Event between 02CW224 and star GA1180:02556739 with event index number of 1651847

Geocentric closest approach at 2027/01/21 09:43:50 UTC

J2000 position of star is 06:34:01.2 +29:00:33
Equinox of date position of star is 06:35:18.3 +28:59:32
Stellar brightness G=16.0, use SENSEUP=128
Star is 8 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=25.2

[RECON map]
TNO is 32.9 AU from the Sun and 32.0 AU from the Earth.
The TNO is moving 22.4 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 846 seconds.
The 1-sigma cross-track error in the shadow position is 1677 km.
The sky-plane scale is 23197.8 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=227.0 km assuming a 5% albedo -- 2.7 sec chord
Diameter=92.7 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 02CW224, (2027/01/21 09:44UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:58.4 +27:57:31  1.1 15.67   9
Alhena         06:39:16.5 +16:22:26  1.9 12.64  12
53 Aur         06:40:05.9 +28:57:30  5.5  0.95   7
PPM 096107     06:33:25.2 +28:21:39  8.3  0.81   9
PPM 096171     06:35:38.2 +28:50:33  9.0  0.15   8
02CW224        06:35:44.2 +28:59:11 16.0         8
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 1.1 sigma about the mid-time.
The median site spacing is 21.4 km RECON observability=1.0 and success probability=11.3%
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 09:41:35 -54.5 Dark Up 48.3 258.0 Up 09:26:35 - 09:56:35 3834
Kelowna 09:41:34 -54.9 Dark Up 48.4 258.2 Up 09:26:34 - 09:56:34 3795
Peachland 09:41:34 -55.1 Dark Up 48.7 258.1 Up 09:26:34 - 09:56:34 3777
Summerland 09:41:34 -55.1 Dark Up 48.6 258.3 Up 09:26:34 - 09:56:34 3766
Penticton 09:41:33 -55.2 Dark Up 48.6 258.5 Up 09:26:33 - 09:56:33 3763
Oliver 09:41:32 -55.4 Dark Up 48.6 258.9 Up 09:26:32 - 09:56:32 3730
Anarchist Mountain Observatory 09:41:31 -55.5 Dark Up 48.6 259.3 Up 09:26:31 - 09:56:31 3720
Tonasket 09:41:30 -55.7 Dark Up 48.7 259.5 Up 09:26:30 - 09:56:30 3690
Okanogan 09:41:30 -56.1 Dark Up 48.8 259.8 Up 09:26:30 - 09:56:30 3655
Brewster 09:41:30 -56.3 Dark Up 49.0 259.9 Up 09:26:30 - 09:56:30 3625
Manson/Chelan 09:41:30 -56.7 Dark Up 49.3 259.8 Up 09:26:30 - 09:56:30 3596
Entiat 09:41:30 -56.9 Dark Up 49.4 260.0 Up 09:26:30 - 09:56:30 3573
Victoria 09:41:39 -57.5 Dark Up 51.2 256.1 Up 09:26:39 - 09:56:39 3571
Wenatchee 09:41:29 -57.1 Dark Up 49.5 260.2 Up 09:26:29 - 09:56:29 3547
Ellensburg 09:41:29 -57.5 Dark Up 49.7 260.5 Up 09:26:29 - 09:56:29 3503
Pasco 09:41:24 -57.4 Dark Up 48.8 262.6 Up 09:26:24 - 09:56:24 3472
Yakima 09:41:28 -57.8 Dark Up 49.8 261.0 Up 09:26:28 - 09:56:28 3464
PNWRO 09:41:22 -57.5 Dark Up 48.7 263.0 Up 09:26:22 - 09:56:22 3456
Toppenish/White Swan 09:41:27 -57.9 Dark Up 49.7 261.4 Up 09:26:27 - 09:56:27 3449
Goldendale 09:41:26 -58.5 Dark Up 50.1 261.6 Up 09:26:26 - 09:56:26 3385
Niwot 09:40:37 -52.4 Dark Up 38.8 277.9 Up 09:25:37 - 09:55:37 3356
The Dalles 09:41:27 -58.9 Dark Up 50.4 261.6 Up 09:26:27 - 09:56:27 3354
SwRI 09:40:38 -52.5 Dark Up 38.8 277.9 Up 09:25:38 - 09:55:38 3342
Maupin 09:41:25 -59.1 Dark Up 50.3 262.2 Up 09:26:25 - 09:56:25 3317
Redmond 09:41:23 -59.8 Dark Up 50.5 263.2 Up 09:26:23 - 09:56:23 3228
Sisters 09:41:24 -60.0 Dark Up 50.8 262.8 Up 09:26:24 - 09:56:24 3219
Bend 09:41:23 -60.1 Dark Up 50.7 263.3 Up 09:26:23 - 09:56:23 3204
Oregon Observatory 09:41:23 -60.3 Dark Up 50.8 263.4 Up 09:26:23 - 09:56:23 3183
La Pine/Gilchrist 09:41:22 -60.4 Dark Up 50.8 263.6 Up 09:26:22 - 09:56:22 3162
North Lake 09:41:20 -60.5 Dark Up 50.5 264.6 Up 09:26:20 - 09:56:20 3137
Paisley 09:41:18 -60.7 Dark Up 50.2 265.6 Up 09:26:18 - 09:56:18 3094
Lakeview 09:41:16 -60.9 Dark Up 50.1 266.3 Up 09:26:16 - 09:56:16 3051
Klamath Falls 09:41:20 -61.6 Dark Up 51.2 265.2 Up 09:26:20 - 09:56:20 3013
Cedarville 09:41:14 -61.3 Dark Up 50.1 267.2 Up 09:26:14 - 09:56:14 2992
Fall River/Burney 09:41:16 -62.3 Dark Up 51.0 266.9 Up 09:26:16 - 09:56:16 2909
Susanville 09:41:12 -62.3 Dark Up 50.5 268.2 Up 09:26:12 - 09:56:12 2869
Gimple 09:41:13 -62.6 Dark Up 50.6 268.4 Up 09:26:13 - 09:56:13 2836
Greenville 09:41:13 -62.6 Dark Up 50.7 268.4 Up 09:26:13 - 09:56:13 2833
Portola 09:41:11 -62.6 Dark Up 50.3 269.1 Up 09:26:11 - 09:56:11 2816
Quincy 09:41:12 -62.8 Dark Up 50.7 268.6 Up 09:26:12 - 09:56:12 2814
Reno 09:41:08 -62.4 Dark Up 49.9 269.8 Up 09:26:08 - 09:56:08 2809
Yerington 09:41:05 -62.3 Dark Up 49.4 270.9 Up 09:26:05 - 09:56:05 2775
Carson City 09:41:07 -62.6 Dark Up 49.8 270.2 Up 09:26:07 - 09:56:07 2775
Gardnerville 09:41:07 -62.7 Dark Up 49.8 270.6 Up 09:26:07 - 09:56:07 2752
Hawthorne 09:41:03 -62.2 Dark Up 48.9 271.7 Up 09:26:03 - 09:56:03 2746
Tonopah 09:40:58 -61.6 Dark Up 47.8 273.0 Up 09:25:58 - 09:55:58 2746
Lee Vining 09:41:03 -62.9 Dark Up 49.3 272.1 Up 09:26:03 - 09:56:03 2675
Indian Springs 09:40:51 -61.3 Dark Up 46.5 275.5 Up 09:25:51 - 09:55:51 2651
Beatty 09:40:54 -61.9 Dark Up 47.4 274.6 Up 09:25:54 - 09:55:54 2647
Bishop 09:41:00 -62.8 Dark Up 48.7 273.2 Up 09:26:00 - 09:56:00 2639
Henderson 09:40:48 -61.1 Dark Up 45.9 276.4 Up 09:25:48 - 09:55:48 2622
Patrick 09:40:44 -60.5 Dark Up 45.0 277.5 Up 09:25:44 - 09:55:44 2599
DCO 09:40:41 -60.1 Dark Up 44.3 278.2 Up 09:25:41 - 09:55:41 2595
Kingman/Dolan Springs 09:40:44 -60.8 Dark Up 45.1 277.7 Up 09:25:44 - 09:55:44 2571
Searchlight/Boulder City 09:40:46 -61.3 Dark Up 45.8 277.0 Up 09:25:46 - 09:55:46 2568
Laughlin/Bullhead City 09:40:45 -61.2 Dark Up 45.5 277.4 Up 09:25:45 - 09:55:45 2550
Mohave Valley 09:40:44 -61.3 Dark Up 45.5 277.7 Up 09:25:44 - 09:55:44 2524
George/Scottsdale 09:40:35 -59.6 Dark Up 43.1 280.0 Up 09:25:35 - 09:55:35 2506
Lake Havasu City 09:40:43 -61.2 Dark Up 45.2 278.2 Up 09:25:43 - 09:55:43 2493
Parker 09:40:42 -61.4 Dark Up 45.1 278.6 Up 09:25:42 - 09:55:42 2459
Blythe 09:40:42 -61.8 Dark Up 45.3 279.0 Up 09:25:42 - 09:55:42 2397
CPSLO 09:41:01 -65.4 Dark Up 50.4 274.4 Up 09:26:01 - 09:56:01 2361
Idyllwild 09:40:47 -63.4 Dark Up 47.0 278.0 Up 09:25:47 - 09:55:47 2334
Calipatria 09:40:43 -62.7 Dark Up 46.0 279.1 Up 09:25:43 - 09:55:43 2315
Wildwood 09:40:53 -64.6 Dark Up 48.6 276.8 Up 09:25:53 - 09:55:53 2306
Yuma 09:40:40 -62.2 Dark Up 45.2 279.9 Up 09:25:40 - 09:55:40 2304

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 02CW224, (2027/01/21 09:44UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 15.67   9
Alhena         06:37:42.8 +16:23:57  1.9 12.64  12
53 Aur         06:38:23.0 +28:59:03  5.5  0.95   7
PPM 096107     06:31:42.7 +28:22:56  8.3  0.81   9
PPM 096171     06:33:55.3 +28:51:55  9.0  0.15   8
02CW224        06:34:01.2 +29:00:33 16.0         8
Positions are for J2000

Event circumstances last updated at 2020/04/04 21:45:06 UT

Marc W. Buie, Southwest Research Institute

RECON