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 09:31:57 UTC

J2000 position of star is 18:07:59.3 +04:58:11
Equinox of date position of star is 18:08:56.8 +04:58:25
Stellar brightness G=15.0, use SENSEUP=128
Star is 114 degrees from the moon. Moon is 74% illuminated.
TNO apparent brightness V=22.0

[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 262 seconds.
The 1-sigma cross-track error in the shadow position is 5387 km.
The sky-plane scale is 26332.5 km/arcsec.

The TNO has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 21.3 sec chord
Diameter=141.6 km assuming a 30% albedo -- 8.7 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 +38:48:32  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     18:09:53.7 +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 3.4 sigma about the mid-time.
The median site spacing is 14.6 km RECON observability=1.0 and success probability=7.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 09:36:58 -22.7 Dark Up 37.3 137.4 Up 09:21:58 - 09:51:58 -384
Summerland 09:36:59 -23.1 Dark Up 37.4 136.9 Up 09:21:59 - 09:51:59 -421
Penticton 09:36:58 -23.1 Dark Up 37.5 137.0 Up 09:21:58 - 09:51:58 -422
Okanagan Falls 09:36:58 -23.3 Dark Up 37.6 136.9 Up 09:21:58 - 09:51:58 -440
Oliver 09:36:58 -23.4 Dark Up 37.8 136.8 Up 09:21:58 - 09:51:58 -453
Anarchist Mountain Observatory 09:36:57 -23.5 Dark Up 38.0 136.9 Up 09:21:57 - 09:51:57 -459
Niwot 09:35:52 -25.1 Dark Up 51.0 149.3 Up 09:20:52 - 09:50:52 -462
Oroville 09:36:57 -23.6 Dark Up 38.0 136.8 Up 09:21:57 - 09:51:57 -469
SwRI 09:35:51 -25.2 Dark Up 51.1 149.1 Up 09:20:51 - 09:50:51 -475
Tonasket 09:36:57 -23.8 Dark Up 38.2 136.7 Up 09:21:57 - 09:51:57 -489
Okanogan 09:36:56 -24.1 Dark Up 38.3 136.3 Up 09:21:56 - 09:51:56 -525
Brewster 09:36:56 -24.4 Dark Up 38.4 135.9 Up 09:21:56 - 09:51:56 -557
Manson/Chelan 09:36:57 -24.7 Dark Up 38.4 135.4 Up 09:21:57 - 09:51:57 -592
Entiat 09:36:57 -25.0 Dark Up 38.5 135.2 Up 09:21:57 - 09:51:57 -614
Wenatchee 09:36:57 -25.2 Dark Up 38.7 135.0 Up 09:21:57 - 09:51:57 -641
Ellensburg 09:36:57 -25.6 Dark Up 38.9 134.5 Up 09:21:57 - 09:51:57 -687
Pasco 09:36:51 -25.9 Dark Up 40.1 135.6 Up 09:21:51 - 09:51:51 -688
PNWRO 09:36:50 -26.0 Dark Up 40.3 135.7 Up 09:21:50 - 09:51:50 -699
Yakima 09:36:56 -26.0 Dark Up 39.1 134.2 Up 09:21:56 - 09:51:56 -724
George/Umatilla 09:36:51 -26.2 Dark Up 40.2 135.2 Up 09:21:51 - 09:51:51 -727
Toppenish/White Swan 09:36:54 -26.2 Dark Up 39.4 134.3 Up 09:21:54 - 09:51:54 -735
Goldendale 09:36:55 -26.8 Dark Up 39.5 133.5 Up 09:21:55 - 09:51:55 -804
The Dalles 09:36:55 -27.1 Dark Up 39.5 132.9 Up 09:21:55 - 09:51:55 -840
Maupin 09:36:54 -27.4 Dark Up 39.8 132.8 Up 09:21:54 - 09:51:54 -873
Madras/Culver 09:36:53 -28.0 Dark Up 40.2 132.4 Up 09:21:53 - 09:51:53 -924
Redmond 09:36:52 -28.3 Dark Up 40.4 132.1 Up 09:21:52 - 09:51:52 -958
Sisters 09:36:53 -28.4 Dark Up 40.2 131.7 Up 09:21:53 - 09:51:53 -974
Bend 09:36:52 -28.5 Dark Up 40.5 131.8 Up 09:21:52 - 09:51:52 -984
Oregon Observatory 09:36:53 -28.7 Dark Up 40.5 131.6 Up 09:21:53 - 09:51:53 -1005
La Pine/Gilchrist 09:36:53 -28.9 Dark Up 40.6 131.4 Up 09:21:53 - 09:51:53 -1026
North Lake 09:36:50 -29.1 Dark Up 41.2 131.7 Up 09:21:50 - 09:51:50 -1037
Paisley 09:36:47 -29.5 Dark Up 41.8 131.8 Up 09:21:47 - 09:51:47 -1069
Lakeview 09:36:46 -29.9 Dark Up 42.2 131.6 Up 09:21:46 - 09:51:46 -1105
Chiloquin 09:36:51 -30.0 Dark Up 41.1 130.2 Up 09:21:51 - 09:51:51 -1143
Cedarville 09:36:43 -30.4 Dark Up 42.7 131.4 Up 09:21:43 - 09:51:43 -1155
Klamath Falls 09:36:51 -30.3 Dark Up 41.4 130.1 Up 09:21:51 - 09:51:51 -1170
Tulelake 09:36:48 -30.5 Dark Up 41.7 130.2 Up 09:21:48 - 09:51:48 -1180
Fall River/Burney 09:36:46 -31.3 Dark Up 42.4 129.7 Up 09:21:46 - 09:51:46 -1258
Susanville 09:36:43 -31.6 Dark Up 43.2 130.0 Up 09:21:43 - 09:51:43 -1279
Tonopah 09:36:26 -32.3 Dark Up 46.7 132.1 Up 09:21:26 - 09:51:26 -1310
Gimple 09:36:43 -31.9 Dark Up 43.2 129.6 Up 09:21:43 - 09:51:43 -1314
Reno 09:36:38 -32.0 Dark Up 44.2 130.3 Up 09:21:38 - 09:51:38 -1314
Greenville 09:36:43 -31.9 Dark Up 43.2 129.5 Up 09:21:43 - 09:51:43 -1318
Portola 09:36:41 -32.0 Dark Up 43.7 129.8 Up 09:21:41 - 09:51:41 -1323
Yerington 09:36:35 -32.3 Dark Up 45.0 130.6 Up 09:21:35 - 09:51:35 -1330
Quincy 09:36:43 -32.1 Dark Up 43.3 129.4 Up 09:21:43 - 09:51:43 -1336
DCO 09:36:04 -32.9 Dark Up 51.1 134.5 Up 09:21:04 - 09:51:04 -1337
Hawthorne 09:36:31 -32.5 Dark Up 45.6 130.9 Up 09:21:31 - 09:51:31 -1343
Carson City 09:36:37 -32.3 Dark Up 44.5 130.1 Up 09:21:37 - 09:51:37 -1345
Patrick 09:36:07 -33.0 Dark Up 50.4 133.9 Up 09:21:07 - 09:51:07 -1352
Indian Springs 09:36:16 -32.9 Dark Up 48.6 132.7 Up 09:21:16 - 09:51:16 -1355
Henderson 09:36:13 -33.0 Dark Up 49.4 133.1 Up 09:21:13 - 09:51:13 -1362
Gardnerville 09:36:36 -32.5 Dark Up 44.7 129.9 Up 09:21:36 - 09:51:36 -1365
Kingman/Dolan Springs 09:36:07 -33.3 Dark Up 50.5 133.5 Up 09:21:07 - 09:51:07 -1382
Beatty 09:36:21 -33.1 Dark Up 47.7 131.7 Up 09:21:21 - 09:51:21 -1386
Searchlight/Boulder City 09:36:11 -33.5 Dark Up 49.8 132.7 Up 09:21:11 - 09:51:11 -1408
Laughlin/Bullhead City 09:36:09 -33.6 Dark Up 50.2 132.8 Up 09:21:09 - 09:51:09 -1414
Lee Vining 09:36:31 -33.2 Dark Up 45.7 129.9 Up 09:21:31 - 09:51:31 -1419
Bishop 09:36:27 -33.4 Dark Up 46.5 130.2 Up 09:21:27 - 09:51:27 -1434
Mohave Valley 09:36:08 -33.8 Dark Up 50.4 132.6 Up 09:21:08 - 09:51:08 -1437
Lake Havasu City 09:36:06 -34.0 Dark Up 50.8 132.5 Up 09:21:06 - 09:51:06 -1457
Lone Pine 09:36:24 -33.9 Dark Up 47.2 130.0 Up 09:21:24 - 09:51:24 -1483
Parker 09:36:04 -34.3 Dark Up 51.0 132.2 Up 09:21:04 - 09:51:04 -1486
Blythe 09:36:04 -34.8 Dark Up 51.2 131.4 Up 09:21:04 - 09:51:04 -1548
Yuma 09:36:01 -35.6 Dark Up 51.8 130.4 Up 09:21:01 - 09:51:01 -1631
Calipatria 09:36:06 -35.7 Dark Up 50.9 129.8 Up 09:21:06 - 09:51:06 -1646
Idyllwild 09:36:12 -35.7 Dark Up 49.8 129.0 Up 09:21:12 - 09:51:12 -1661
Wildwood 09:36:18 -36.3 Dark Up 48.4 127.1 Up 09:21:18 - 09:51:18 -1735
CPSLO 09:36:29 -36.1 Dark Up 46.3 126.0 Up 09:21:29 - 09:51:29 -1738

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 +04:34:05  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 2019/06/02 20:13:05 UT

Marc W. Buie, Southwest Research Institute

RECON