RECON: TNO occultation with 523700

Event between (523700) 14GM54 and star GA1080:14220771 with event index number of 2088586

Geocentric closest approach at 2022/07/14 08:11:27 UTC

J2000 position of star is 19:53:49.0 +19:46:24
Equinox of date position of star is 19:54:47.9 +19:49:57
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 45 degrees from the moon. Moon is 99% 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 23.8 km/sec on the sky relative to the star, or, 4.4 arcsec/hr.
The 1-sigma error in the time of the event is 87 seconds.
The 1-sigma cross-track error in the shadow position is 1442 km.
The sky-plane scale is 19566.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 9.6 sec chord
Diameter=93.5 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 523700, (2022/07/14 08:11UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:42.1 +38:48:21  0.0 25.23  67
Tarazed        19:47:19.8 +10:40:11  2.7  9.34  36
9 Sge          19:53:22.0 +18:43:52  6.1  1.15  44
PPM 109951     19:54:23.8 +20:23:14  7.5  0.56  45
PPM 109977     19:54:59.5 +20:04:11  8.7  0.24  45
PPM 137166     19:54:30.6 +19:41:05 10.3  0.16  45
523700         19:54:48.8 +19:50:00 15.6        45
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 27.8 km RECON observability=1.0 and success probability=12.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 08:11:06 -17.7 AT Up 59.0 172.9 Up 08:03:22 - 08:18:50 4014
Sleaford 08:10:25 -15.1 AT Up 56.7 198.0 Up 08:02:41 - 08:18:09 3929
Kelowna 08:11:05 -18.5 Dark Up 59.8 174.4 Up 08:03:21 - 08:18:49 3923
Peachland 08:11:06 -18.6 Dark Up 59.9 173.9 Up 08:03:22 - 08:18:50 3918
Summerland 08:11:06 -18.7 Dark Up 60.1 174.0 Up 08:03:22 - 08:18:50 3903
Penticton 08:11:05 -18.8 Dark Up 60.1 174.2 Up 08:03:21 - 08:18:49 3894
Victoria 08:11:18 -19.8 Dark Up 60.7 166.7 Up 08:03:34 - 08:19:02 3875
Oliver 08:11:06 -19.1 Dark Up 60.5 174.2 Up 08:03:22 - 08:18:50 3862
Anarchist Mountain Observatory 08:11:06 -19.3 Dark Up 60.7 174.5 Up 08:03:22 - 08:18:50 3842
Tonasket 08:11:06 -19.6 Dark Up 61.0 174.3 Up 08:03:22 - 08:18:50 3815
Okanogan 08:11:07 -20.0 Dark Up 61.3 174.0 Up 08:03:23 - 08:18:51 3786
Brewster 08:11:08 -20.2 Dark Up 61.6 173.5 Up 08:03:24 - 08:18:52 3764
Manson/Chelan 08:11:09 -20.4 Dark Up 61.7 172.8 Up 08:03:25 - 08:18:53 3752
Wenatchee 08:11:10 -20.9 Dark Up 62.2 172.3 Up 08:03:26 - 08:18:54 3710
Ellensburg 08:11:11 -21.3 Dark Up 62.6 171.8 Up 08:03:27 - 08:18:55 3675
Yakima 08:11:12 -21.7 Dark Up 63.0 171.6 Up 08:03:28 - 08:18:56 3637
Toppenish/White Swan 08:11:12 -22.0 Dark Up 63.2 171.9 Up 08:03:28 - 08:18:56 3613
Goldendale 08:11:14 -22.5 Dark Up 63.7 170.9 Up 08:03:30 - 08:18:58 3569
The Dalles 08:11:16 -22.7 Dark Up 63.9 170.0 Up 08:03:32 - 08:19:00 3555
PNWRO 08:11:08 -22.3 Dark Up 63.7 174.9 Up 08:03:24 - 08:18:52 3549
Maupin 08:11:15 -23.2 Dark Up 64.3 170.1 Up 08:03:31 - 08:18:59 3512
Sisters 08:11:18 -24.0 Dark Up 65.1 168.7 Up 08:03:34 - 08:19:02 3438
Bend 08:11:17 -24.3 Dark Up 65.4 169.2 Up 08:03:33 - 08:19:01 3410
Oregon Observatory 08:11:18 -24.5 Dark Up 65.5 168.8 Up 08:03:34 - 08:19:02 3396
North Lake 08:11:17 -25.1 Dark Up 66.2 169.8 Up 08:03:33 - 08:19:01 3322
Chiloquin 08:11:21 -25.8 Dark Up 66.8 167.3 Up 08:03:37 - 08:19:05 3276
Klamath Falls 08:11:21 -26.1 Dark Up 67.1 167.3 Up 08:03:37 - 08:19:05 3241
Lakeview 08:11:17 -26.1 Dark Up 67.4 170.7 Up 08:03:33 - 08:19:01 3206
Cedarville 08:11:17 -26.8 Dark Up 68.0 170.8 Up 08:03:33 - 08:19:01 3138
Fall River/Burney 08:11:21 -27.3 Dark Up 68.3 167.6 Up 08:03:37 - 08:19:05 3116
Susanville 08:11:20 -27.9 Dark Up 69.1 169.2 Up 08:03:36 - 08:19:04 3037
Greenville 08:11:21 -28.2 Dark Up 69.3 168.3 Up 08:03:37 - 08:19:05 3016
Gimple 08:11:21 -28.2 Dark Up 69.3 168.5 Up 08:03:37 - 08:19:05 3014
Quincy 08:11:21 -28.4 Dark Up 69.5 168.2 Up 08:03:37 - 08:19:05 2996
Portola 08:11:20 -28.5 Dark Up 69.7 169.4 Up 08:03:36 - 08:19:04 2973
Reno 08:11:18 -28.8 Dark Up 70.0 171.0 Up 08:03:34 - 08:19:02 2932
Carson City 08:11:19 -29.1 Dark Up 70.4 170.9 Up 08:03:35 - 08:19:03 2895
Gardnerville 08:11:18 -29.4 Dark Up 70.6 170.9 Up 08:03:34 - 08:19:02 2869
Yerington 08:11:16 -29.3 Dark Up 70.7 172.6 Up 08:03:32 - 08:19:00 2862
Hawthorne 08:11:15 -29.8 Dark Up 71.2 173.9 Up 08:03:31 - 08:18:59 2803
Lee Vining 08:11:17 -30.3 Dark Up 71.7 172.3 Up 08:03:33 - 08:19:01 2756
Dunrhomin 08:10:27 -26.3 Dark Up 67.4 208.3 Up 08:02:43 - 08:18:11 2740
Tonopah 08:11:11 -30.2 Dark Up 71.7 177.9 Up 08:03:27 - 08:18:55 2726
CU-SBO 08:10:27 -26.6 Dark Up 67.7 208.4 Up 08:02:43 - 08:18:11 2716
Bishop 08:11:16 -30.9 Dark Up 72.3 174.2 Up 08:03:32 - 08:19:00 2679
Beatty 08:11:10 -31.3 Dark Up 72.9 179.2 Up 08:03:26 - 08:18:54 2597
Indian Springs 08:11:07 -31.5 Dark Up 73.2 182.7 Up 08:03:23 - 08:18:51 2541
Henderson 08:11:05 -32.0 Dark Up 73.7 185.1 Up 08:03:21 - 08:18:49 2471
Patrick 08:11:01 -32.5 Dark Up 74.2 189.1 Up 08:03:17 - 08:18:45 2383
Laughlin/Bullhead City 08:11:04 -32.8 Dark Up 74.5 186.8 Up 08:03:20 - 08:18:48 2372
Kingman/Dolan Springs 08:11:03 -32.7 Dark Up 74.4 188.6 Up 08:03:19 - 08:18:47 2364
Wildwood 08:11:20 -34.2 Dark Up 75.6 172.3 Up 08:03:36 - 08:19:04 2346
Mohave Valley 08:11:04 -33.1 Dark Up 74.8 186.9 Up 08:03:20 - 08:18:48 2343
Lake Havasu City 08:11:04 -33.5 Dark Up 75.2 188.0 Up 08:03:20 - 08:18:48 2296
Idyllwild 08:11:13 -34.4 Dark Up 76.0 179.3 Up 08:03:29 - 08:18:57 2267
Parker 08:11:04 -33.8 Dark Up 75.5 188.3 Up 08:03:20 - 08:18:48 2259
Calipatria 08:11:10 -34.9 Dark Up 76.6 184.0 Up 08:03:26 - 08:18:54 2177
George/Scottsdale 08:10:55 -33.9 Dark Up 75.5 197.5 Up 08:03:11 - 08:18:39 2165
Yuma 08:11:07 -35.3 Dark Up 77.0 187.9 Up 08:03:23 - 08:18:51 2113

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, (2022/07/14 08:11UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 25.23  67
Tarazed        19:46:15.6 +10:36:48  2.7  9.34  36
9 Sge          19:52:21.7 +18:40:18  6.1  1.15  44
PPM 109951     19:53:24.4 +20:19:39  7.5  0.56  45
PPM 109977     19:53:59.8 +20:00:34  8.7  0.24  45
PPM 137166     19:53:30.8 +19:37:29 10.3  0.16  45
523700         19:53:49.0 +19:46:24 15.6        45
Positions are for J2000

Event circumstances last updated at 2022/03/15 01:06:35 UT

Marc W. Buie, Southwest Research Institute

RECON