RECON: TNO occultation with 523713

Event between (523713) 14JX80 and star GA0940:06156588 with event index number of 1470261

Geocentric closest approach at 2026/04/26 09:31:31 UTC

J2000 position of star is 18:07:59.3 +04:58:11
Equinox of date position of star is 18:09:00.1 +04:58:26
Stellar brightness G=15.0, use SENSEUP=128
Star is 114 degrees from the moon. Moon is 74% illuminated.
TNO apparent brightness V=25.8

[RECON map]
TNO is 36.8 AU from the Sun and 36.3 AU from the Earth.
The TNO is moving 16.3 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 167 seconds.
The 1-sigma cross-track error in the shadow position is 3421 km.
The sky-plane scale is 26332.5 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=346.7 km assuming a 5% albedo -- 3.7 sec chord
Diameter=141.6 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is 5:2EEE+5:2EII
 
 
 
 
 
 

Star training set for 523713, (2026/04/26 09:32UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:49.7 +38:48:33  0.0 34.45 108
60Bet Oph      17:44:46.4 +04:33:29  2.8  6.12 108
73 Oph         18:10:52.5 +04:00:00  6.0  1.05 115
PPM 165293     18:11:03.0 +04:36:36  7.6  0.57 114
PPM 165248     18:09:53.8 +05:16:45  9.5  0.34 114
PPM 165232     18:09:25.8 +05:09:17 10.7  0.18 114
523713         18:09:17.2 +04:58:31 15.0       114
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 14.5 km RECON observability=1.0 and success probability=10.9%
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 09:36:35 -22.4 Dark Up 37.0 137.5 Up 09:22:10 - 09:51:00 -772
Kelowna 09:36:35 -22.8 Dark Up 37.3 137.1 Up 09:22:10 - 09:51:00 -812
Peachland 09:36:36 -23.0 Dark Up 37.2 136.8 Up 09:22:11 - 09:51:01 -835
Summerland 09:36:34 -23.1 Dark Up 37.4 136.8 Up 09:22:09 - 09:50:59 -843
Penticton 09:36:34 -23.1 Dark Up 37.5 136.9 Up 09:22:09 - 09:50:59 -844
Oliver 09:36:34 -23.4 Dark Up 37.7 136.7 Up 09:22:09 - 09:50:59 -875
Anarchist Mountain Observatory 09:36:33 -23.5 Dark Up 37.9 136.8 Up 09:22:08 - 09:50:58 -881
Niwot 09:35:29 -25.1 Dark Up 51.0 149.2 Up 09:21:04 - 09:49:54 -885
SwRI 09:35:29 -25.2 Dark Up 51.0 149.0 Up 09:21:04 - 09:49:54 -899
Tonasket 09:36:33 -23.8 Dark Up 38.1 136.6 Up 09:22:08 - 09:50:58 -911
Okanogan 09:36:33 -24.2 Dark Up 38.3 136.2 Up 09:22:08 - 09:50:58 -947
Brewster 09:36:33 -24.5 Dark Up 38.4 135.8 Up 09:22:08 - 09:50:58 -980
Manson/Chelan 09:36:33 -24.8 Dark Up 38.4 135.3 Up 09:22:08 - 09:50:58 -1014
Entiat 09:36:33 -25.0 Dark Up 38.5 135.1 Up 09:22:08 - 09:50:58 -1037
Wenatchee 09:36:32 -25.2 Dark Up 38.6 134.8 Up 09:22:07 - 09:50:57 -1063
Victoria 09:36:43 -25.1 Dark Up 36.4 132.1 Up 09:22:18 - 09:51:08 -1097
Ellensburg 09:36:32 -25.7 Dark Up 38.8 134.4 Up 09:22:07 - 09:50:57 -1109
Pasco 09:36:26 -25.9 Dark Up 40.0 135.5 Up 09:22:01 - 09:50:51 -1110
PNWRO 09:36:26 -26.1 Dark Up 40.3 135.6 Up 09:22:01 - 09:50:51 -1121
Yakima 09:36:32 -26.0 Dark Up 39.1 134.1 Up 09:22:07 - 09:50:57 -1146
Toppenish/White Swan 09:36:32 -26.2 Dark Up 39.3 134.2 Up 09:22:07 - 09:50:57 -1158
Goldendale 09:36:32 -26.8 Dark Up 39.5 133.4 Up 09:22:07 - 09:50:57 -1226
The Dalles 09:36:32 -27.1 Dark Up 39.4 132.8 Up 09:22:07 - 09:50:57 -1262
Maupin 09:36:30 -27.5 Dark Up 39.8 132.7 Up 09:22:05 - 09:50:55 -1295
Redmond 09:36:30 -28.3 Dark Up 40.3 132.0 Up 09:22:05 - 09:50:55 -1380
Sisters 09:36:31 -28.4 Dark Up 40.1 131.6 Up 09:22:06 - 09:50:56 -1397
Bend 09:36:30 -28.6 Dark Up 40.4 131.7 Up 09:22:05 - 09:50:55 -1406
Oregon Observatory 09:36:29 -28.8 Dark Up 40.5 131.5 Up 09:22:04 - 09:50:54 -1427
La Pine/Gilchrist 09:36:29 -29.0 Dark Up 40.6 131.3 Up 09:22:04 - 09:50:54 -1449
North Lake 09:36:26 -29.2 Dark Up 41.2 131.6 Up 09:22:01 - 09:50:51 -1459
Paisley 09:36:24 -29.5 Dark Up 41.7 131.7 Up 09:21:59 - 09:50:49 -1491
Lakeview 09:36:22 -29.9 Dark Up 42.2 131.5 Up 09:21:57 - 09:50:47 -1527
Cedarville 09:36:21 -30.4 Dark Up 42.7 131.3 Up 09:21:56 - 09:50:46 -1578
Klamath Falls 09:36:26 -30.4 Dark Up 41.3 130.0 Up 09:22:01 - 09:50:51 -1593
Fall River/Burney 09:36:23 -31.3 Dark Up 42.3 129.6 Up 09:21:58 - 09:50:48 -1681
Susanville 09:36:19 -31.6 Dark Up 43.1 129.9 Up 09:21:54 - 09:50:44 -1701
Tonopah 09:36:02 -32.4 Dark Up 46.7 132.0 Up 09:21:37 - 09:50:27 -1733
Gimple 09:36:18 -31.9 Dark Up 43.2 129.5 Up 09:21:53 - 09:50:43 -1736
Reno 09:36:15 -32.1 Dark Up 44.2 130.2 Up 09:21:50 - 09:50:40 -1737
Greenville 09:36:19 -32.0 Dark Up 43.1 129.4 Up 09:21:54 - 09:50:44 -1740
Portola 09:36:17 -32.1 Dark Up 43.6 129.7 Up 09:21:52 - 09:50:42 -1746
Yerington 09:36:11 -32.3 Dark Up 44.9 130.5 Up 09:21:46 - 09:50:36 -1753
Quincy 09:36:19 -32.1 Dark Up 43.3 129.3 Up 09:21:54 - 09:50:44 -1759
DCO 09:35:40 -33.0 Dark Up 51.0 134.4 Up 09:21:15 - 09:50:05 -1761
Hawthorne 09:36:09 -32.5 Dark Up 45.5 130.8 Up 09:21:44 - 09:50:34 -1766
Carson City 09:36:14 -32.4 Dark Up 44.4 130.0 Up 09:21:49 - 09:50:39 -1768
Patrick 09:35:44 -33.1 Dark Up 50.4 133.8 Up 09:21:19 - 09:50:09 -1776
Indian Springs 09:35:54 -32.9 Dark Up 48.5 132.6 Up 09:21:29 - 09:50:19 -1778
Henderson 09:35:49 -33.1 Dark Up 49.3 133.0 Up 09:21:24 - 09:50:14 -1786
Gardnerville 09:36:12 -32.6 Dark Up 44.6 129.8 Up 09:21:47 - 09:50:37 -1787
George/Scottsdale 09:35:31 -33.4 Dark Up 52.7 134.8 Up 09:21:06 - 09:49:56 -1802
Kingman/Dolan Springs 09:35:44 -33.3 Dark Up 50.4 133.4 Up 09:21:19 - 09:50:09 -1806
Beatty 09:35:57 -33.1 Dark Up 47.7 131.6 Up 09:21:32 - 09:50:22 -1809
Searchlight/Boulder City 09:35:48 -33.5 Dark Up 49.7 132.5 Up 09:21:23 - 09:50:13 -1832
Laughlin/Bullhead City 09:35:46 -33.6 Dark Up 50.1 132.7 Up 09:21:21 - 09:50:11 -1838
Lee Vining 09:36:08 -33.2 Dark Up 45.6 129.8 Up 09:21:43 - 09:50:33 -1842
Bishop 09:36:03 -33.4 Dark Up 46.4 130.1 Up 09:21:38 - 09:50:28 -1857
Mohave Valley 09:35:44 -33.8 Dark Up 50.3 132.5 Up 09:21:19 - 09:50:09 -1861
Lake Havasu City 09:35:42 -34.0 Dark Up 50.7 132.4 Up 09:21:17 - 09:50:07 -1881
Parker 09:35:42 -34.3 Dark Up 51.0 132.1 Up 09:21:17 - 09:50:07 -1910
Blythe 09:35:40 -34.9 Dark Up 51.1 131.2 Up 09:21:15 - 09:50:05 -1972
Yuma 09:35:38 -35.7 Dark Up 51.7 130.3 Up 09:21:13 - 09:50:03 -2054
Calipatria 09:35:42 -35.7 Dark Up 50.9 129.7 Up 09:21:17 - 09:50:07 -2069
Idyllwild 09:35:48 -35.8 Dark Up 49.7 128.8 Up 09:21:23 - 09:50:13 -2084
Wildwood 09:35:56 -36.3 Dark Up 48.3 127.0 Up 09:21:31 - 09:50:21 -2158
CPSLO 09:36:06 -36.1 Dark Up 46.2 125.9 Up 09:21:41 - 09:50:31 -2162

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 523713, (2026/04/26 09:32UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 34.45 108
60Bet Oph      17:43:28.3 +04:34:06  2.8  6.12 108
73 Oph         18:09:34.0 +03:59:36  6.0  1.05 115
PPM 165293     18:09:44.9 +04:36:12  7.6  0.57 114
PPM 165248     18:08:36.1 +05:16:24  9.5  0.34 114
PPM 165232     18:08:08.1 +05:08:57 10.7  0.18 114
523713         18:07:59.3 +04:58:11 15.0       114
Positions are for J2000

Event circumstances last updated at 2020/07/23 22:01:13 UT

Marc W. Buie, Southwest Research Institute

RECON