RECON: TNO occultation with 445473

Event between (445473) 10VZ98 and star GA1080:00569130 with event index number of 2245587

Geocentric closest approach at 2027/02/07 04:19:54 UTC

J2000 position of star is 04:26:47.1 +18:16:55
Equinox of date position of star is 04:28:02.1 +18:19:45
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 104 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=20.6

[RECON map]
TNO is 34.4 AU from the Sun and 34.0 AU from the Earth.
The TNO is moving 4.4 km/sec on the sky relative to the star, or, 0.6 arcsec/hr.
The 1-sigma error in the time of the event is 487 seconds.
The 1-sigma cross-track error in the shadow position is 2646 km.
The sky-plane scale is 24667.9 km/arcsec.

The TNO has an absolute magnitude Hv=5.1
Diameter=572.8 km assuming a 5% albedo -- 130.8 sec chord
Diameter=233.9 km assuming a 30% albedo -- 53.4 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 445473, (2027/02/07 04:20UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:28.7 +16:33:42  0.8  2.81 106
44Zet Per      03:55:50.6 +31:57:43  2.8 15.47  99
68Del3Tau      04:27:03.7 +17:59:16  4.4  0.47 104
PPM 119881     04:27:26.6 +18:55:25  8.0  0.62 104
68Del3Tau      04:27:03.7 +17:59:16  4.4  0.47 104
445473         04:28:21.5 +18:20:28 15.5       104
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 1.8 sigma about the mid-time.
The median site spacing is 20.1 km RECON observability=1.0 and success probability=11.2%
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 04:20:59 -32.3 Dark Down 55.5 208.1 Up 04:05:59 - 04:35:59 -2222
Kelowna 04:20:59 -32.3 Dark Down 55.9 208.1 Up 04:05:59 - 04:35:59 -2259
Peachland 04:20:59 -32.2 Dark Down 56.1 207.7 Up 04:05:59 - 04:35:59 -2274
Summerland 04:20:59 -32.3 Dark Down 56.2 207.9 Up 04:05:59 - 04:35:59 -2285
Penticton 04:20:59 -32.3 Dark Down 56.2 208.2 Up 04:05:59 - 04:35:59 -2289
Oliver 04:20:59 -32.4 Dark Down 56.5 208.4 Up 04:05:59 - 04:35:59 -2320
Anarchist Mountain Observatory 04:20:59 -32.6 Dark Down 56.6 208.9 Up 04:05:59 - 04:35:59 -2332
Tonasket 04:20:59 -32.6 Dark Down 56.9 209.0 Up 04:05:59 - 04:35:59 -2361
Okanogan 04:20:59 -32.6 Dark Down 57.2 209.0 Up 04:05:59 - 04:35:59 -2394
Brewster 04:20:59 -32.6 Dark Down 57.5 208.8 Up 04:05:59 - 04:35:59 -2422
Manson/Chelan 04:20:59 -32.4 Dark Down 57.8 208.4 Up 04:05:59 - 04:35:59 -2448
Victoria 04:20:59 -30.1 Dark Down 58.2 202.4 Up 04:05:59 - 04:35:59 -2462
Wenatchee 04:20:59 -32.4 Dark Down 58.3 208.5 Up 04:05:59 - 04:35:59 -2494
Ellensburg 04:20:59 -32.3 Dark Down 58.7 208.4 Up 04:05:59 - 04:35:59 -2536
Pasco 04:19:22 -33.2 Dark Down 59.0 210.8 Up 04:04:22 - 04:34:22 -2542
Yakima 04:19:51 -32.2 Dark Down 59.2 208.2 Up 04:04:51 - 04:34:51 -2553
PNWRO 04:19:17 -33.4 Dark Down 59.2 211.3 Up 04:04:17 - 04:34:17 -2557
Toppenish/White Swan 04:19:42 -32.3 Dark Down 59.3 208.6 Up 04:04:42 - 04:34:42 -2567
Goldendale 04:19:49 -32.2 Dark Down 60.0 208.4 Up 04:04:49 - 04:34:49 -2627
Dunrhomin 04:14:49 -43.8 Dark Down 56.8 237.0 Up 03:59:49 - 04:29:49 -2630
The Dalles 04:19:47 -32.0 Dark Down 60.3 207.9 Up 04:04:47 - 04:34:47 -2657
Maupin 04:19:44 -32.1 Dark Down 60.6 208.4 Up 04:04:44 - 04:34:44 -2691
Redmond 04:19:38 -32.2 Dark Down 61.4 209.0 Up 04:04:38 - 04:34:38 -2774
Sisters 04:19:42 -31.9 Dark Down 61.6 208.2 Up 04:04:42 - 04:34:42 -2783
Bend 04:19:37 -32.1 Dark Down 61.7 208.9 Up 04:04:37 - 04:34:37 -2797
Oregon Observatory 04:19:35 -32.1 Dark Down 61.9 208.8 Up 04:04:35 - 04:34:35 -2817
La Pine/Gilchrist 04:19:34 -32.0 Dark Down 62.1 208.8 Up 04:04:34 - 04:34:34 -2837
North Lake 04:19:21 -32.5 Dark Down 62.3 210.3 Up 04:04:21 - 04:34:21 -2859
Paisley 04:19:08 -32.8 Dark Down 62.6 211.4 Up 04:04:08 - 04:34:08 -2898
Lakeview 04:19:00 -33.0 Dark Down 63.0 212.2 Up 04:04:00 - 04:34:00 -2939
Chiloquin 04:19:29 -31.9 Dark Down 63.2 209.2 Up 04:04:29 - 04:34:29 -2948
Klamath Falls 04:19:21 -32.0 Dark Down 63.5 209.6 Up 04:04:21 - 04:34:21 -2977
Cedarville 04:18:55 -33.2 Dark Down 63.5 213.2 Up 04:03:55 - 04:33:55 -2994
Fall River/Burney 04:19:07 -32.4 Dark Down 64.4 211.4 Up 04:04:07 - 04:34:07 -3075
Susanville 04:18:52 -33.0 Dark Down 64.6 213.5 Up 04:03:52 - 04:33:52 -3111
Gimple 04:18:52 -32.9 Dark Down 64.9 213.4 Up 04:03:52 - 04:33:52 -3143
Greenville 04:18:51 -32.8 Dark Down 65.0 213.2 Up 04:03:51 - 04:33:51 -3146
Portola 04:18:42 -33.2 Dark Down 65.1 214.5 Up 04:03:42 - 04:33:42 -3161
Quincy 04:18:46 -32.9 Dark Down 65.2 213.4 Up 04:03:46 - 04:33:46 -3164
Reno 04:18:26 -33.7 Dark Down 65.0 216.0 Up 04:03:26 - 04:33:26 -3166
Yerington 04:18:13 -34.2 Dark Down 65.2 217.9 Up 04:03:13 - 04:33:13 -3198
Carson City 04:18:24 -33.8 Dark Down 65.3 216.5 Up 04:03:24 - 04:33:24 -3199
Gardnerville 04:18:22 -33.8 Dark Down 65.5 216.9 Up 04:03:22 - 04:33:22 -3221
Tonopah 04:17:28 -35.7 Dark Down 65.0 222.6 Up 04:02:28 - 04:32:28 -3223
Hawthorne 04:17:59 -34.7 Dark Down 65.3 219.5 Up 04:02:59 - 04:32:59 -3225
Lee Vining 04:18:01 -34.4 Dark Down 66.0 219.3 Up 04:03:01 - 04:33:01 -3293
Indian Springs 04:16:50 -37.0 Dark Down 65.3 227.3 Up 04:01:50 - 04:31:50 -3313
Beatty 04:17:07 -36.2 Dark Down 65.6 225.0 Up 04:02:07 - 04:32:07 -3318
Bishop 04:17:44 -35.0 Dark Down 66.1 221.5 Up 04:02:44 - 04:32:44 -3327
Henderson 04:16:35 -37.6 Dark Down 65.3 229.3 Up 04:01:35 - 04:31:35 -3340
Patrick 04:16:09 -38.5 Dark Down 65.0 232.1 Up 04:01:09 - 04:31:09 -3362
Kingman/Dolan Springs 04:16:10 -38.4 Dark Down 65.3 232.2 Up 04:01:10 - 04:31:10 -3389
Laughlin/Bullhead City 04:16:18 -38.0 Dark Down 65.6 231.4 Up 04:01:18 - 04:31:18 -3409
Mohave Valley 04:16:13 -38.0 Dark Down 65.8 231.8 Up 04:01:13 - 04:31:13 -3435
George/Scottsdale 04:15:16 -40.2 Dark Down 64.8 237.9 Up 04:00:16 - 04:30:16 -3453
Lake Havasu City 04:16:04 -38.3 Dark Down 65.9 232.9 Up 04:01:04 - 04:31:04 -3464
Parker 04:15:57 -38.3 Dark Down 66.1 233.5 Up 04:00:57 - 04:30:57 -3497
Blythe 04:16:02 -38.2 Dark Down 66.6 234.0 Up 04:01:02 - 04:31:02 -3557
CPSLO 04:17:58 -33.4 Dark Down 68.8 220.2 Up 04:02:58 - 04:32:58 -3596
Idyllwild 04:16:37 -36.5 Dark Down 67.8 230.3 Up 04:01:37 - 04:31:37 -3617
Calipatria 04:16:11 -37.5 Dark Down 67.5 233.4 Up 04:01:11 - 04:31:11 -3636
Wildwood 04:17:16 -35.0 Dark Down 68.7 226.3 Up 04:02:16 - 04:32:16 -3646
Yuma 04:15:52 -38.2 Dark Down 67.2 235.6 Up 04:00:52 - 04:30:52 -3647

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 445473, (2027/02/07 04:20UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  2.81 106
44Zet Per      03:54:07.9 +31:53:01  2.8 15.47  99
68Del3Tau      04:25:29.5 +17:55:40  4.4  0.47 104
PPM 119881     04:25:51.9 +18:51:50  8.0  0.62 104
68Del3Tau      04:25:29.5 +17:55:40  4.4  0.47 104
445473         04:26:47.1 +18:16:55 15.5       104
Positions are for J2000

Event circumstances last updated at 2021/07/18 00:21:55 UT

Marc W. Buie, Southwest Research Institute

RECON