RECON: TNO occultation with 523700

Event between (523700) 14GM54 and star GA1080:14422275 with event index number of 2088570

Geocentric closest approach at 2022/07/03 06:40:06 UTC

J2000 position of star is 19:55:07.7 +19:49:26
Equinox of date position of star is 19:56:06.6 +19:53:02
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 131 degrees from the moon. Moon is 15% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 27.7 AU from the Sun and 27.0 AU from the Earth.
The TNO is moving 22.3 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 96 seconds.
The 1-sigma cross-track error in the shadow position is 1432 km.
The sky-plane scale is 19593.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 10.3 sec chord
Diameter=93.5 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 523700, (2022/07/03 06:40UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:42.0 +38:48:20  0.0 25.38 106
Tarazed        19:47:19.8 +10:40:10  2.7  9.46 136
12Gam Sge      19:59:45.5 +19:33:17  3.5  0.92 132
PPM 137273     19:58:06.2 +19:37:32  8.3  0.53 132
PPM 109977     19:54:59.4 +20:04:10  8.7  0.32 131
523700         19:56:07.4 +19:53:04 16.5       131
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 25.5 km RECON observability=1.0 and success probability=0.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:41:44 -14.1 AT Up 47.4 122.4 Up 06:33:17 - 06:50:12 6970
Kelowna 06:41:44 -15.0 AT Up 48.3 122.7 Up 06:33:17 - 06:50:12 6883
Peachland 06:41:45 -15.1 AT Up 48.2 122.2 Up 06:33:18 - 06:50:13 6879
Summerland 06:41:45 -15.2 AT Up 48.3 122.2 Up 06:33:18 - 06:50:13 6864
Penticton 06:41:45 -15.3 AT Up 48.4 122.3 Up 06:33:18 - 06:50:13 6856
Sleaford 06:41:03 -14.7 AT Down 53.0 142.0 Up 06:32:36 - 06:49:31 6847
Victoria 06:41:58 -15.4 AT Up 46.8 117.1 Up 06:33:30 - 06:50:25 6847
Oliver 06:41:46 -15.7 AT Down 48.6 121.9 Up 06:33:19 - 06:50:14 6826
Anarchist Mountain Observatory 06:41:47 -15.9 AT Down 48.8 122.0 Up 06:33:19 - 06:50:14 6808
Tonasket 06:41:47 -16.1 AT Down 48.9 121.6 Up 06:33:20 - 06:50:15 6782
Okanogan 06:41:48 -16.4 AT Down 49.0 121.1 Up 06:33:21 - 06:50:16 6755
Brewster 06:41:50 -16.6 AT Down 49.1 120.6 Up 06:33:22 - 06:50:17 6736
Manson/Chelan 06:41:51 -16.7 AT Down 48.9 120.0 Up 06:33:24 - 06:50:19 6725
Wenatchee 06:41:53 -17.2 AT Down 49.1 119.3 Up 06:33:25 - 06:50:20 6686
Ellensburg 06:41:54 -17.5 AT Down 49.2 118.7 Up 06:33:27 - 06:50:22 6654
Yakima 06:41:56 -17.9 AT Down 49.3 118.3 Up 06:33:28 - 06:50:23 6618
Toppenish/White Swan 06:41:55 -18.1 Dark Down 49.6 118.2 Up 06:33:28 - 06:50:23 6596
Goldendale 06:41:58 -18.5 Dark Down 49.6 117.2 Up 06:33:31 - 06:50:26 6555
The Dalles 06:42:00 -18.7 Dark Down 49.4 116.6 Up 06:33:32 - 06:50:27 6543
PNWRO 06:41:53 -18.8 Dark Down 50.6 119.5 Up 06:33:25 - 06:50:20 6531
Maupin 06:42:01 -19.1 Dark Down 49.7 116.3 Up 06:33:33 - 06:50:28 6503
Sisters 06:42:04 -19.8 Dark Down 49.8 114.8 Up 06:33:37 - 06:50:32 6434
Bend 06:42:04 -20.1 Dark Down 50.0 114.8 Up 06:33:37 - 06:50:32 6406
Oregon Observatory 06:42:05 -20.2 Dark Down 50.0 114.5 Up 06:33:37 - 06:50:32 6394
North Lake 06:42:05 -20.9 Dark Down 50.6 114.4 Up 06:33:38 - 06:50:33 6323
Chiloquin 06:42:09 -21.3 Dark Down 50.3 112.6 Up 06:33:41 - 06:50:36 6282
Klamath Falls 06:42:10 -21.6 Dark Down 50.5 112.3 Up 06:33:42 - 06:50:37 6248
Lakeview 06:42:05 -22.1 Dark Down 51.4 113.8 Up 06:33:38 - 06:50:33 6212
Cedarville 06:42:07 -22.7 Dark Down 51.8 113.2 Up 06:33:39 - 06:50:34 6147
Fall River/Burney 06:42:11 -22.8 Dark Down 51.2 111.4 Up 06:33:44 - 06:50:39 6129
Susanville 06:42:11 -23.6 Dark Down 51.9 111.4 Up 06:33:43 - 06:50:38 6052
Greenville 06:42:12 -23.8 Dark Down 51.8 110.8 Up 06:33:45 - 06:50:40 6033
Gimple 06:42:12 -23.8 Dark Down 51.9 110.9 Up 06:33:44 - 06:50:39 6031
Quincy 06:42:13 -24.0 Dark Down 51.9 110.5 Up 06:33:46 - 06:50:41 6013
Portola 06:42:12 -24.3 Dark Down 52.3 110.9 Up 06:33:44 - 06:50:39 5990
Reno 06:42:10 -24.7 Dark Down 52.8 111.2 Up 06:33:43 - 06:50:38 5950
Carson City 06:42:11 -25.0 Dark Down 53.0 110.8 Up 06:33:44 - 06:50:39 5915
Gardnerville 06:42:11 -25.3 Dark Down 53.1 110.5 Up 06:33:44 - 06:50:39 5890
Yerington 06:42:09 -25.4 Dark Down 53.5 111.1 Up 06:33:42 - 06:50:37 5881
Hawthorne 06:42:09 -26.0 Dark Down 54.1 111.1 Up 06:33:42 - 06:50:37 5824
Lee Vining 06:42:12 -26.4 Dark Down 53.9 109.9 Up 06:33:44 - 06:50:39 5781
Tonopah 06:42:05 -26.8 Dark Down 55.3 111.9 Up 06:33:38 - 06:50:33 5746
Dunrhomin 06:41:15 -26.6 Dark Down 62.0 130.3 Up 06:32:48 - 06:49:43 5721
Bishop 06:42:11 -27.1 Dark Down 54.7 109.8 Up 06:33:44 - 06:50:39 5705
CU-SBO 06:41:15 -26.8 Dark Down 62.1 129.8 Up 06:32:48 - 06:49:43 5698
Beatty 06:42:07 -28.0 Dark Down 56.0 110.8 Up 06:33:39 - 06:50:34 5622
Indian Springs 06:42:04 -28.5 Dark Down 56.9 111.5 Up 06:33:37 - 06:50:32 5564
Henderson 06:42:02 -29.2 Dark Down 57.7 111.4 Up 06:33:35 - 06:50:30 5495
Patrick 06:42:00 -30.1 Dark Down 58.7 111.6 Up 06:33:33 - 06:50:28 5407
Laughlin/Bullhead City 06:42:02 -30.1 Dark Down 58.3 110.5 Up 06:33:35 - 06:50:30 5398
Kingman/Dolan Springs 06:42:01 -30.2 Dark Down 58.7 111.1 Up 06:33:33 - 06:50:28 5389
Wildwood 06:42:18 -30.1 Dark Down 55.5 105.2 Up 06:33:51 - 06:50:46 5386
Mohave Valley 06:42:03 -30.4 Dark Down 58.4 110.1 Up 06:33:36 - 06:50:31 5371
Lake Havasu City 06:42:03 -30.8 Dark Down 58.7 109.8 Up 06:33:36 - 06:50:31 5325
Idyllwild 06:42:13 -31.0 Dark Down 57.1 106.3 Up 06:33:45 - 06:50:40 5304
Parker 06:42:04 -31.2 Dark Down 58.8 109.3 Up 06:33:36 - 06:50:31 5288
Calipatria 06:42:09 -31.9 Dark Down 58.2 106.5 Up 06:33:42 - 06:50:37 5214
George/Scottsdale 06:41:56 -32.1 Dark Down 60.9 111.1 Up 06:33:29 - 06:50:24 5191
Yuma 06:42:07 -32.5 Dark Down 59.0 106.6 Up 06:33:40 - 06:50:35 5149

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 523700, (2022/07/03 06:40UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 25.38 106
Tarazed        19:46:15.6 +10:36:48  2.7  9.46 136
12Gam Sge      19:58:45.5 +19:29:32  3.5  0.92 132
PPM 137273     19:57:06.3 +19:33:51  8.3  0.53 132
PPM 109977     19:53:59.8 +20:00:34  8.7  0.32 131
523700         19:55:07.7 +19:49:26 16.5       131
Positions are for J2000

Event circumstances last updated at 2022/03/15 01:05:56 UT

Marc W. Buie, Southwest Research Institute

RECON