RECON: TNO occultation with 547893

Event between (547893) 10WN75 and star GA0860:00972319 with event index number of 2398965

Geocentric closest approach at 2022/09/14 11:35:23 UTC

J2000 position of star is 06:10:58.4 -03:15:06
Equinox of date position of star is 06:12:05.0 -03:15:28
Stellar brightness G=14.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 55 degrees from the moon. Moon is 81% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 37.2 AU from the Sun and 37.4 AU from the Earth.
The TNO is moving 16.1 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 95 seconds.
The 1-sigma cross-track error in the shadow position is 1910 km.
The sky-plane scale is 27130.4 km/arcsec.

The TNO has an absolute magnitude Hv=5.7
Diameter=436.5 km assuming a 5% albedo -- 27.1 sec chord
Diameter=178.2 km assuming a 30% albedo -- 11.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 547893, (2022/09/14 11:35UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:24.1 +07:24:34  0.4 11.36  48
Saiph          05:48:50.0 -09:39:48  2.1  8.63  52
PPM 188936     06:15:02.0 -03:44:57  5.8  0.88  56
PPM 188902     06:13:14.4 -03:46:37  8.5  0.59  55
PPM 188889     06:12:26.1 -03:25:28  9.0  0.19  55
547893         06:12:06.5 -03:15:29 14.4        55
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 19.0 km RECON observability=0.9 and success probability=1.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 11:29:47 -10.8 NT Up 28.1 142.2 Low 11:21:21 - 11:38:12 8223
Kamloops 11:29:19 -19.6 Dark Up 22.6 127.3 Low 11:20:54 - 11:37:45 7487
Kelowna 11:29:20 -19.5 Dark Up 23.6 127.9 Low 11:20:55 - 11:37:46 7448
Peachland 11:29:17 -19.8 Dark Up 23.5 127.5 Low 11:20:52 - 11:37:43 7426
Summerland 11:29:18 -19.8 Dark Up 23.6 127.6 Low 11:20:53 - 11:37:44 7416
Penticton 11:29:22 -19.7 Dark Up 23.7 127.7 Low 11:20:56 - 11:37:47 7414
Oliver 11:29:21 -19.9 Dark Up 24.0 127.5 Low 11:20:55 - 11:37:46 7382
Anarchist Mountain Observatory 11:29:23 -19.9 Dark Up 24.2 127.7 Low 11:20:57 - 11:37:48 7375
Tonasket 11:29:22 -20.1 Dark Up 24.3 127.5 Low 11:20:56 - 11:37:47 7343
Dunrhomin 11:30:06 -14.0 AT Up 37.6 138.2 Up 11:21:41 - 11:38:32 7323
Okanogan 11:29:22 -20.4 Dark Up 24.4 127.2 Low 11:20:56 - 11:37:47 7306
CU-SBO 11:30:06 -14.2 AT Up 37.7 138.0 Up 11:21:41 - 11:38:32 7297
Brewster 11:29:23 -20.6 Dark Up 24.5 126.9 Low 11:20:57 - 11:37:48 7273
Manson/Chelan 11:29:22 -20.9 Dark Up 24.4 126.5 Low 11:20:56 - 11:37:47 7239
Wenatchee 11:29:23 -21.3 Dark Up 24.6 126.2 Low 11:20:57 - 11:37:48 7188
Victoria 11:29:16 -22.4 Dark Up 22.3 123.8 Low 11:20:51 - 11:37:42 7168
Ellensburg 11:29:23 -21.6 Dark Up 24.7 125.8 Low 11:20:57 - 11:37:48 7141
PNWRO 11:29:27 -21.1 Dark Up 26.2 127.0 Low 11:21:01 - 11:37:52 7120
Yakima 11:29:23 -21.8 Dark Up 25.0 125.7 Low 11:20:58 - 11:37:49 7103
Toppenish/White Swan 11:29:20 -21.9 Dark Up 25.2 125.7 Low 11:20:55 - 11:37:46 7090
Goldendale 11:29:23 -22.4 Dark Up 25.3 125.1 Low 11:20:58 - 11:37:49 7020
The Dalles 11:29:23 -22.7 Dark Up 25.2 124.7 Low 11:20:57 - 11:37:48 6984
Maupin 11:29:23 -22.9 Dark Up 25.5 124.7 Low 11:20:58 - 11:37:49 6949
Sisters 11:29:23 -23.6 Dark Up 25.7 123.9 Low 11:20:58 - 11:37:49 6846
Bend 11:29:24 -23.6 Dark Up 26.0 124.0 Low 11:20:58 - 11:37:49 6835
Oregon Observatory 11:29:24 -23.7 Dark Up 26.0 123.8 Low 11:20:59 - 11:37:50 6813
North Lake 11:29:25 -23.7 Dark Up 26.7 124.0 Low 11:21:00 - 11:37:51 6777
Lakeview 11:29:29 -23.9 Dark Up 27.6 124.1 Low 11:21:03 - 11:37:54 6703
Chiloquin 11:29:26 -24.7 Dark Up 26.5 122.9 Low 11:21:01 - 11:37:52 6671
Cedarville 11:29:31 -24.1 Dark Up 28.1 124.0 Low 11:21:05 - 11:37:56 6651
Klamath Falls 11:29:27 -24.8 Dark Up 26.7 122.8 Low 11:21:01 - 11:37:52 6643
Fall River/Burney 11:29:28 -25.1 Dark Up 27.6 122.7 Low 11:21:02 - 11:37:53 6549
Susanville 11:29:29 -24.9 Dark Up 28.4 123.0 Low 11:21:04 - 11:37:55 6525
Gimple 11:29:32 -25.2 Dark Up 28.4 122.7 Low 11:21:07 - 11:37:58 6489
Greenville 11:29:31 -25.3 Dark Up 28.4 122.7 Low 11:21:05 - 11:37:56 6486
Reno 11:29:34 -24.8 Dark Up 29.4 123.4 Low 11:21:09 - 11:38:00 6484
Portola 11:29:32 -25.1 Dark Up 28.9 122.9 Low 11:21:06 - 11:37:57 6477
Tonopah 11:29:42 -23.6 Dark Up 32.0 125.0 Up 11:21:16 - 11:38:07 6477
Quincy 11:29:33 -25.4 Dark Up 28.5 122.6 Low 11:21:07 - 11:37:58 6467
Yerington 11:29:36 -24.6 Dark Up 30.2 123.7 Up 11:21:10 - 11:38:01 6465
Carson City 11:29:36 -24.9 Dark Up 29.7 123.3 Low 11:21:10 - 11:38:01 6452
Hawthorne 11:29:38 -24.4 Dark Up 30.8 124.0 Up 11:21:12 - 11:38:03 6448
Gardnerville 11:29:37 -25.0 Dark Up 29.8 123.2 Low 11:21:11 - 11:38:02 6432
Indian Springs 11:29:48 -23.1 Dark Up 33.8 125.6 Up 11:21:23 - 11:38:14 6424
Patrick 11:29:59 -22.1 Dark Up 35.7 126.7 Up 11:21:33 - 11:38:24 6420
Henderson 11:29:55 -22.7 Dark Up 34.6 126.0 Up 11:21:29 - 11:38:20 6414
Beatty 11:29:48 -23.7 Dark Up 32.9 124.8 Up 11:21:23 - 11:38:14 6396
Kingman/Dolan Springs 11:29:59 -22.3 Dark Up 35.8 126.4 Up 11:21:33 - 11:38:24 6389
George/Scottsdale 11:30:08 -21.1 Dark Up 38.1 127.6 Up 11:21:42 - 11:38:33 6386
Lee Vining 11:29:38 -25.0 Dark Up 30.8 123.3 Up 11:21:12 - 11:38:03 6372
Laughlin/Bullhead City 11:29:55 -22.8 Dark Up 35.4 125.9 Up 11:21:30 - 11:38:21 6359
Bishop 11:29:43 -24.7 Dark Up 31.6 123.6 Up 11:21:17 - 11:38:08 6354
Mohave Valley 11:29:56 -22.9 Dark Up 35.6 125.7 Up 11:21:30 - 11:38:21 6335
Lake Havasu City 11:29:58 -22.8 Dark Up 36.0 125.7 Up 11:21:32 - 11:38:23 6314
Parker 11:30:01 -22.9 Dark Up 36.2 125.6 Up 11:21:36 - 11:38:27 6284
Yuma 11:30:04 -23.7 Dark Up 36.8 124.4 Up 11:21:39 - 11:38:30 6138
Calipatria 11:29:57 -24.2 Dark Up 35.9 123.8 Up 11:21:32 - 11:38:23 6125
Idyllwild 11:29:54 -24.9 Dark Up 34.8 123.1 Up 11:21:28 - 11:38:19 6114
Wildwood 11:29:49 -26.2 Dark Up 33.2 121.7 Up 11:21:24 - 11:38:15 6046

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, (2022/09/14 11:35UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 11.36  48
Saiph          05:47:45.4 -09:40:11  2.1  8.63  52
PPM 188936     06:13:54.2 -03:44:29  5.8  0.88  56
PPM 188902     06:12:06.6 -03:46:12  8.5  0.59  55
PPM 188889     06:11:18.0 -03:25:04  9.0  0.19  55
547893         06:10:58.4 -03:15:06 14.4        55
Positions are for J2000

Event circumstances last updated at 2022/03/16 00:58:12 UT

Marc W. Buie, Southwest Research Institute

RECON