RECON: TNO occultation with 13KZ18

Event between 13KZ18 and star GA1360:00447472 with event index number of 1585020

Geocentric closest approach at 2026/09/12 11:42:03 UTC

J2000 position of star is 01:05:28.1 +46:29:18
Equinox of date position of star is 01:06:36.0 +46:35:34
Stellar brightness G=12.3, use SENSEUP=16
Star is 138 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 21.4 AU from the Sun and 20.8 AU from the Earth.
The TNO is moving 19.0 km/sec on the sky relative to the star, or, 4.5 arcsec/hr.
The 1-sigma error in the time of the event is 422 seconds.
The 1-sigma cross-track error in the shadow position is 5955 km.
The sky-plane scale is 15106.2 km/arcsec.

The TNO has an absolute magnitude Hv=8.9
Diameter=97.7 km assuming a 5% albedo -- 5.2 sec chord
Diameter=39.9 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 13KZ18, (2026/09/12 11:42UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:20.6 +45:22:37  1.3 44.58 118
57Gam1And      02:05:33.0 +42:27:24  2.3 11.21 136
42Phi And      01:11:03.9 +47:23:01  4.2  1.02 137
PPM 043683     01:10:30.2 +46:05:05  7.7  0.81 138
PPM 043633     01:07:25.1 +46:27:23 10.0  0.19 138
13KZ18         01:07:01.0 +46:37:51 12.3       138
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 2.1 sigma about the mid-time.
The median site spacing is 15.5 km RECON observability=1.0 and success probability=6.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 11:40:26 -17.4 AT Down 69.3 272.4 Up 11:25:26 - 11:55:26 1476
Summerland 11:40:26 -17.7 AT Down 69.5 273.0 Up 11:25:26 - 11:55:26 1438
Penticton 11:40:26 -17.7 AT Down 69.4 273.3 Up 11:25:26 - 11:55:26 1437
Okanagan Falls 11:40:25 -17.8 AT Down 69.4 273.8 Up 11:25:25 - 11:55:25 1419
Oliver 11:40:25 -17.8 AT Down 69.4 274.2 Up 11:25:25 - 11:55:25 1406
Anarchist Mountain Observatory 11:40:23 -17.8 AT Down 69.2 274.8 Up 11:25:23 - 11:55:23 1399
Oroville 11:40:23 -17.9 AT Down 69.3 274.9 Up 11:25:23 - 11:55:23 1389
Tonasket 11:40:22 -18.0 Dark Down 69.3 275.6 Up 11:25:22 - 11:55:22 1368
SwRI 11:39:12 -12.1 AT Down 57.3 296.4 Up 11:24:12 - 11:54:12 1343
Okanogan 11:40:22 -18.3 Dark Down 69.3 276.4 Up 11:25:22 - 11:55:22 1332
Brewster 11:40:21 -18.5 Dark Down 69.4 277.0 Up 11:25:21 - 11:55:21 1299
Manson/Chelan 11:40:22 -18.8 Dark Down 69.7 277.3 Up 11:25:22 - 11:55:22 1265
Wenatchee 11:40:20 -19.2 Dark Down 69.7 278.5 Up 11:25:20 - 11:55:20 1215
Ellensburg 11:40:20 -19.5 Dark Down 69.8 279.5 Up 11:25:20 - 11:55:20 1169
Pasco 11:40:13 -19.0 Dark Down 68.7 282.0 Up 11:25:13 - 11:55:13 1164
PNWRO 11:40:12 -19.0 Dark Down 68.5 282.7 Up 11:25:12 - 11:55:12 1152
Yakima 11:40:18 -19.7 Dark Down 69.7 280.6 Up 11:25:18 - 11:55:18 1131
George/Umatilla 11:40:12 -19.3 Dark Down 68.8 282.8 Up 11:25:12 - 11:55:12 1124
Toppenish/White Swan 11:40:17 -19.7 Dark Down 69.6 281.2 Up 11:25:17 - 11:55:17 1119
Goldendale 11:40:17 -20.3 Dark Down 69.8 282.5 Up 11:25:17 - 11:55:17 1050
The Dalles 11:40:17 -20.6 Dark Down 70.0 283.0 Up 11:25:17 - 11:55:17 1014
Maupin 11:40:15 -20.7 Dark Down 69.8 284.2 Up 11:25:15 - 11:55:15 981
Madras/Culver 11:40:14 -21.0 Dark Down 69.7 285.6 Up 11:25:14 - 11:55:14 929
Redmond 11:40:13 -21.2 Dark Down 69.6 286.5 Up 11:25:13 - 11:55:13 894
Sisters 11:40:14 -21.5 Dark Down 69.9 286.4 Up 11:25:14 - 11:55:14 878
Bend 11:40:12 -21.4 Dark Down 69.7 287.0 Up 11:25:12 - 11:55:12 868
Oregon Observatory 11:40:12 -21.6 Dark Down 69.7 287.5 Up 11:25:12 - 11:55:12 846
La Pine/Gilchrist 11:40:12 -21.7 Dark Down 69.7 288.0 Up 11:25:12 - 11:55:12 825
North Lake 11:40:08 -21.6 Dark Down 69.1 289.1 Up 11:25:08 - 11:55:08 812
Paisley 11:40:05 -21.6 Dark Down 68.7 290.5 Up 11:25:05 - 11:55:05 779
Lakeview 11:40:03 -21.7 Dark Down 68.4 291.7 Up 11:25:03 - 11:55:03 741
Chiloquin 11:40:09 -22.5 Dark Down 69.6 290.8 Up 11:25:09 - 11:55:09 707
Cedarville 11:40:01 -21.9 Dark Down 68.0 293.2 Up 11:25:01 - 11:55:01 690
Klamath Falls 11:40:08 -22.6 Dark Down 69.4 291.7 Up 11:25:08 - 11:55:08 679
Tulelake 11:40:06 -22.6 Dark Down 69.1 292.3 Up 11:25:06 - 11:55:06 668
Fall River/Burney 11:40:03 -22.9 Dark Down 68.7 294.5 Up 11:25:03 - 11:55:03 588
Susanville 11:39:59 -22.8 Dark Down 67.9 295.8 Up 11:24:59 - 11:54:59 565
Gimple 11:39:59 -23.0 Dark Down 67.9 296.4 Up 11:24:59 - 11:54:59 530
Reno 11:39:53 -22.6 Dark Down 67.0 297.5 Up 11:24:53 - 11:54:53 526
Greenville 11:39:59 -23.1 Dark Down 68.0 296.4 Up 11:24:59 - 11:54:59 526
Tonopah 11:39:40 -21.4 Dark Down 64.5 299.9 Up 11:24:40 - 11:54:40 523
Portola 11:39:56 -22.9 Dark Down 67.5 297.1 Up 11:24:56 - 11:54:56 519
Yerington 11:39:49 -22.4 Dark Down 66.3 298.5 Up 11:24:49 - 11:54:49 509
Quincy 11:39:58 -23.2 Dark Down 67.9 296.9 Up 11:24:58 - 11:54:58 507
Carson City 11:39:52 -22.7 Dark Down 66.8 298.2 Up 11:24:52 - 11:54:52 495
Hawthorne 11:39:46 -22.2 Dark Down 65.7 299.3 Up 11:24:46 - 11:54:46 493
Gardnerville 11:39:51 -22.8 Dark Down 66.6 298.7 Up 11:24:51 - 11:54:51 475
Indian Springs 11:39:30 -20.9 Dark Down 62.7 302.1 Up 11:24:30 - 11:54:30 473
Patrick 11:39:20 -20.0 Dark Down 60.9 303.5 Up 11:24:20 - 11:54:20 470
Henderson 11:39:26 -20.6 Dark Down 62.0 302.8 Up 11:24:26 - 11:54:26 463
Beatty 11:39:35 -21.6 Dark Down 63.6 301.8 Up 11:24:35 - 11:54:35 444
Kingman/Dolan Springs 11:39:20 -20.2 Dark Down 60.9 303.9 Up 11:24:20 - 11:54:20 440
Lee Vining 11:39:46 -22.8 Dark Down 65.7 300.5 Up 11:24:46 - 11:54:46 417
Searchlight/Boulder City 11:39:24 -20.8 Dark Down 61.6 303.7 Up 11:24:24 - 11:54:24 416
Laughlin/Bullhead City 11:39:22 -20.6 Dark Down 61.2 304.1 Up 11:24:22 - 11:54:22 409
Bishop 11:39:42 -22.5 Dark Down 64.9 301.4 Up 11:24:42 - 11:54:42 400
Mohave Valley 11:39:21 -20.7 Dark Down 61.1 304.5 Up 11:24:21 - 11:54:21 385
Lake Havasu City 11:39:19 -20.7 Dark Down 60.7 305.0 Up 11:24:19 - 11:54:19 364
Lone Pine 11:39:38 -22.6 Dark Down 64.3 302.7 Up 11:24:38 - 11:54:38 349
Parker 11:39:18 -20.8 Dark Down 60.5 305.5 Up 11:24:18 - 11:54:18 335
Blythe 11:39:17 -21.2 Dark Down 60.4 306.3 Up 11:24:17 - 11:54:17 272
Yuma 11:39:15 -21.5 Dark Down 59.8 307.6 Up 11:24:15 - 11:54:15 188
Calipatria 11:39:19 -22.1 Dark Down 60.7 307.3 Up 11:24:19 - 11:54:19 176
Idyllwild 11:39:25 -22.8 Dark Down 61.8 306.9 Up 11:24:25 - 11:54:25 164
CPSLO 11:39:43 -25.1 Dark Down 65.3 306.0 Up 11:24:43 - 11:54:43 96
Wildwood 11:39:32 -24.1 Dark Down 63.3 307.1 Up 11:24:32 - 11:54:32 94

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 13KZ18, (2026/09/12 11:42UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 44.58 118
57Gam1And      02:03:54.0 +42:19:46  2.3 11.21 136
42Phi And      01:09:30.1 +47:14:31  4.2  1.02 137
PPM 043683     01:08:57.0 +45:56:34  7.7  0.81 138
PPM 043633     01:05:52.2 +46:18:50 10.0  0.19 138
13KZ18         01:05:28.1 +46:29:18 12.3       138
Positions are for J2000

Event circumstances last updated at 2019/07/10 22:53:04 UT

Marc W. Buie, Southwest Research Institute

RECON