RECON: TNO occultation with 547893

Event between (547893) 10WN75 and star GA0860:01334347 with event index number of 2399413

Geocentric closest approach at 2027/01/29 03:13:27 UTC

J2000 position of star is 06:30:28.8 -02:47:08
Equinox of date position of star is 06:31:42.4 -02:48:15
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 111 degrees from the moon. Moon is 53% illuminated.
Apparent brightness V=21.6

[RECON map]
Object is 37.1 AU from the Sun and 36.3 AU from the Earth.
Apparent velocity is 22.6 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 151 seconds.
The 1-sigma cross-track error in the shadow position is 1719 km.
The sky-plane scale is 26337.9 km/arcsec.

The object has an absolute magnitude Hv=5.8
Diameter=436.5 km assuming a 5% albedo -- 18.9 sec chord
Diameter=178.2 km assuming a 30% albedo -- 7.7 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 547893, (2027/01/29 03:13UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:38.3 +07:24:35  0.4 13.47 123
Saiph          05:49:02.5 -09:39:43  2.1 12.65 118
PPM 189166     06:27:30.4 -03:31:59  6.5  1.30 112
PPM 189245     06:31:48.2 -03:02:33  7.2  0.24 111
PPM 189241     06:31:39.3 -02:43:25  9.1  0.09 111
547893         06:31:50.3 -02:48:22 15.0       111
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 22.1 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)
Sleaford 03:16:08 -32.3 Dark Down 30.8 148.9 Up 03:03:06 - 03:29:11 8035
Kamloops 03:16:43 -23.6 Dark Down 26.3 133.5 Low 03:03:40 - 03:29:45 7572
Kelowna 03:16:42 -24.2 Dark Down 27.2 134.1 Low 03:03:39 - 03:29:44 7524
Peachland 03:16:43 -24.0 Dark Down 27.2 133.7 Low 03:03:40 - 03:29:45 7508
Summerland 03:16:42 -24.1 Dark Down 27.3 133.8 Low 03:03:40 - 03:29:45 7497
Penticton 03:16:42 -24.2 Dark Down 27.4 133.9 Low 03:03:40 - 03:29:45 7494
Oliver 03:16:43 -24.2 Dark Down 27.7 133.7 Low 03:03:40 - 03:29:45 7464
Anarchist Mountain Observatory 03:16:42 -24.3 Dark Down 27.9 133.9 Low 03:03:40 - 03:29:45 7455
Okanogan 03:16:43 -24.1 Dark Down 28.2 133.4 Low 03:03:41 - 03:29:46 7394
Brewster 03:16:44 -24.0 Dark Down 28.3 133.1 Low 03:03:42 - 03:29:47 7365
Manson/Chelan 03:16:45 -23.8 Dark Down 28.3 132.6 Low 03:03:43 - 03:29:48 7338
Victoria 03:16:51 -21.6 Dark Down 26.2 129.7 Low 03:03:49 - 03:29:54 7316
Wenatchee 03:16:46 -23.6 Dark Down 28.5 132.3 Low 03:03:44 - 03:29:49 7293
Ellensburg 03:16:47 -23.5 Dark Down 28.7 131.9 Low 03:03:45 - 03:29:50 7251
Yakima 03:16:46 -23.5 Dark Down 28.9 131.7 Low 03:03:43 - 03:29:48 7215
PNWRO 03:16:44 -24.6 Dark Down 30.2 133.1 Up 03:03:42 - 03:29:47 7206
Toppenish/White Swan 03:16:47 -23.6 Dark Down 29.2 131.8 Low 03:03:45 - 03:29:50 7200
The Dalles 03:16:48 -23.0 Dark Down 29.3 130.7 Low 03:03:46 - 03:29:51 7111
Dunrhomin 03:16:08 -34.7 Dark Down 41.0 145.1 Up 03:03:06 - 03:29:11 7095
Nikitin 03:16:08 -34.7 Dark Down 41.1 145.0 Up 03:03:06 - 03:29:11 7078
Maupin 03:16:50 -23.0 Dark Down 29.6 130.6 Low 03:03:47 - 03:29:52 7076
CU-SBO 03:16:08 -34.7 Dark Down 41.2 144.9 Up 03:03:06 - 03:29:11 7070
Sisters 03:16:52 -22.7 Dark Down 29.9 129.8 Low 03:03:49 - 03:29:54 6984
Bend 03:16:51 -22.8 Dark Down 30.2 129.9 Up 03:03:49 - 03:29:54 6969
Oregon Observatory 03:16:51 -22.7 Dark Down 30.3 129.7 Up 03:03:49 - 03:29:54 6950
Chiloquin 03:16:54 -22.3 Dark Down 30.9 128.7 Up 03:03:51 - 03:29:56 6818
Klamath Falls 03:16:54 -22.4 Dark Down 31.1 128.6 Up 03:03:51 - 03:29:56 6789
Cedarville 03:16:50 -23.5 Dark Down 32.5 129.8 Up 03:03:47 - 03:29:52 6767
Fall River/Burney 03:16:54 -22.6 Dark Down 32.1 128.4 Up 03:03:51 - 03:29:56 6689
Gimple 03:16:52 -22.9 Dark Down 33.0 128.5 Up 03:03:50 - 03:29:55 6618
Greenville 03:16:51 -22.8 Dark Down 32.9 128.4 Up 03:03:49 - 03:29:54 6616
Portola 03:16:52 -23.2 Dark Down 33.4 128.7 Up 03:03:49 - 03:29:54 6599
Quincy 03:16:52 -22.8 Dark Down 33.0 128.3 Up 03:03:50 - 03:29:55 6597
Reno 03:16:50 -23.6 Dark Down 33.9 129.2 Up 03:03:48 - 03:29:53 6592
Carson City 03:16:49 -23.6 Dark Down 34.2 129.0 Up 03:03:46 - 03:29:51 6558
Yerington 03:16:49 -24.1 Dark Down 34.7 129.5 Up 03:03:46 - 03:29:51 6558
Gardnerville 03:16:50 -23.6 Dark Down 34.4 128.9 Up 03:03:48 - 03:29:53 6537
Hawthorne 03:16:45 -24.5 Dark Down 35.3 129.8 Up 03:03:43 - 03:29:48 6530
Lee Vining 03:16:49 -24.0 Dark Down 35.4 129.0 Up 03:03:47 - 03:29:52 6462
Beatty 03:16:43 -25.8 Dark Down 37.5 130.7 Up 03:03:40 - 03:29:45 6430
Bishop 03:16:47 -24.6 Dark Down 36.2 129.4 Up 03:03:45 - 03:29:50 6426
Patrick 03:16:34 -28.0 Dark Down 40.2 132.7 Up 03:03:32 - 03:29:37 6378
Laughlin/Bullhead City 03:16:36 -27.4 Dark Down 39.9 131.8 Up 03:03:34 - 03:29:39 6332
George/Scottsdale 03:16:26 -29.6 Dark Down 42.5 133.7 Up 03:03:23 - 03:29:28 6281
Lake Havasu City 03:16:36 -27.6 Dark Down 40.5 131.7 Up 03:03:33 - 03:29:38 6276
Idyllwild 03:16:43 -25.6 Dark Down 39.5 128.8 Up 03:03:40 - 03:29:45 6127
Calipatria 03:16:38 -26.5 Dark Down 40.7 129.6 Up 03:03:36 - 03:29:41 6105
Wildwood 03:16:48 -24.1 Dark Down 38.1 127.2 Up 03:03:46 - 03:29:51 6104
Yuma 03:16:36 -27.2 Dark Down 41.5 130.2 Up 03:03:33 - 03:29:38 6092

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 547893, (2027/01/29 03:13UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 13.47 123
Saiph          05:47:45.4 -09:40:11  2.1 12.65 118
PPM 189166     06:26:09.4 -03:30:55  6.5  1.30 112
PPM 189245     06:30:26.8 -03:01:19  7.2  0.24 111
PPM 189241     06:30:17.7 -02:42:12  9.1  0.09 111
547893         06:30:28.8 -02:47:08 15.0       111
Positions are for J2000

Event circumstances last updated at 2024/06/21 21:25:35 UT

Marc W. Buie, Southwest Research Institute

RECON