RECON: TNO occultation with 14KD102

Event between 14KD102 and star GA0740:20518634 with event index number of 1417588

Geocentric closest approach at 2025/07/03 09:09:46 UTC

J2000 position of star is 18:35:35.0 -15:44:09
Equinox of date position of star is 18:36:48.0 -15:43:02
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 81 degrees from the moon. Moon is 56% illuminated.
TNO apparent brightness V=22.3

[RECON map]
TNO is 31.1 AU from the Sun and 30.1 AU from the Earth.
The TNO is moving 23.4 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 1523 seconds.
The 1-sigma cross-track error in the shadow position is 3006 km.
The sky-plane scale is 21844.8 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=200.5 km assuming a 5% albedo -- 8.6 sec chord
Diameter=81.8 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 14KD102, (2025/07/03 09:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:58.5 -26:29:11  0.9 31.21  52
Nunki          18:56:50.7 -26:15:46  2.0 11.51  84
PPM 234707     18:35:06.4 -14:49:57  6.1  1.00  81
PPM 234786     18:38:15.6 -15:55:20  7.2  0.36  81
PPM 234758     18:37:10.0 -15:42:01  9.5  0.03  81
14KD102        18:37:02.9 -15:42:48 15.0        81
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 0.6 sigma about the mid-time.
The median site spacing is 15.5 km RECON observability=1.0 and success probability=8.8%
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 09:08:29 -15.3 AT Down 21.6 201.3 Low 08:53:29 - 09:23:29 3380
Kelowna 09:08:29 -15.7 AT Down 22.0 201.2 Low 08:53:29 - 09:23:29 3362
Peachland 09:08:30 -15.9 AT Down 22.1 200.9 Low 08:53:30 - 09:23:30 3360
Summerland 09:08:29 -16.0 AT Down 22.3 201.1 Low 08:53:29 - 09:23:29 3352
Penticton 09:08:29 -16.1 AT Down 22.3 201.2 Low 08:53:29 - 09:23:29 3347
Victoria 09:08:40 -17.7 AT Down 24.1 197.4 Low 08:53:40 - 09:23:40 3337
Oliver 09:08:29 -16.4 AT Down 22.6 201.2 Low 08:53:29 - 09:23:29 3330
Anarchist Mountain Observatory 09:08:28 -16.5 AT Down 22.7 201.4 Low 08:53:28 - 09:23:28 3319
Tonasket 09:08:28 -16.9 AT Down 23.0 201.4 Low 08:53:28 - 09:23:28 3304
Okanogan 09:08:28 -17.2 AT Down 23.4 201.3 Low 08:53:28 - 09:23:28 3288
Brewster 09:08:29 -17.5 AT Down 23.7 201.2 Low 08:53:29 - 09:23:29 3276
Manson/Chelan 09:08:29 -17.8 AT Down 24.0 200.8 Low 08:53:29 - 09:23:29 3270
Wenatchee 09:08:29 -18.3 Dark Down 24.5 200.7 Low 08:53:29 - 09:23:29 3247
Ellensburg 09:08:29 -18.7 Dark Down 24.9 200.6 Low 08:53:29 - 09:23:29 3227
Yakima 09:08:29 -19.1 Dark Down 25.3 200.6 Low 08:53:29 - 09:23:29 3205
Toppenish/White Swan 09:08:28 -19.3 Dark Down 25.5 200.8 Low 08:53:28 - 09:23:28 3191
Pasco 09:08:24 -19.1 Dark Down 25.2 202.1 Low 08:53:24 - 09:23:24 3170
Goldendale 09:08:29 -19.9 Dark Down 26.1 200.5 Low 08:53:29 - 09:23:29 3166
The Dalles 09:08:30 -20.2 Dark Down 26.4 200.1 Low 08:53:30 - 09:23:30 3157
PNWRO 09:08:23 -19.3 Dark Down 25.4 202.4 Low 08:53:23 - 09:23:23 3153
Maupin 09:08:29 -20.5 Dark Down 26.7 200.3 Low 08:53:29 - 09:23:29 3133
Sisters 09:08:30 -21.5 Dark Down 27.7 200.0 Low 08:53:30 - 09:23:30 3088
Redmond 09:08:29 -21.4 Dark Down 27.6 200.4 Low 08:53:29 - 09:23:29 3082
Bend 09:08:29 -21.7 Dark Down 27.8 200.3 Low 08:53:29 - 09:23:29 3072
Oregon Observatory 09:08:29 -21.9 Dark Down 28.0 200.2 Low 08:53:29 - 09:23:29 3063
La Pine/Gilchrist 09:08:29 -22.1 Dark Down 28.3 200.1 Low 08:53:29 - 09:23:29 3052
North Lake 09:08:27 -22.4 Dark Down 28.5 200.8 Low 08:53:27 - 09:23:27 3019
Chiloquin 09:08:30 -23.2 Dark Down 29.4 200.0 Low 08:53:30 - 09:23:30 2989
Paisley 09:08:26 -22.8 Dark Down 28.9 201.3 Low 08:53:26 - 09:23:26 2981
Klamath Falls 09:08:29 -23.5 Dark Down 29.7 200.1 Low 08:53:29 - 09:23:29 2967
Lakeview 09:08:24 -23.3 Dark Down 29.4 201.6 Low 08:53:24 - 09:23:24 2948
Cedarville 09:08:23 -23.9 Dark Down 29.9 202.0 Low 08:53:23 - 09:23:23 2905
Fall River/Burney 09:08:27 -24.6 Dark Down 30.7 200.8 Up 08:53:27 - 09:23:27 2889
Susanville 09:08:24 -25.1 Dark Down 31.1 201.7 Up 08:53:24 - 09:23:24 2840
Greenville 09:08:25 -25.4 Dark Down 31.4 201.4 Up 08:53:25 - 09:23:25 2826
Gimple 09:08:25 -25.4 Dark Down 31.4 201.5 Up 08:53:25 - 09:23:25 2825
Quincy 09:08:25 -25.6 Dark Down 31.6 201.5 Up 08:53:25 - 09:23:25 2813
Portola 09:08:23 -25.6 Dark Down 31.6 202.0 Up 08:53:23 - 09:23:23 2799
Reno 09:08:20 -25.7 Dark Down 31.6 202.8 Up 08:53:20 - 09:23:20 2773
Carson City 09:08:20 -26.1 Dark Down 32.0 202.9 Up 08:53:20 - 09:23:20 2749
Gardnerville 09:08:19 -26.3 Dark Down 32.2 203.0 Up 08:53:19 - 09:23:19 2732
Yerington 09:08:18 -26.1 Dark Down 32.0 203.6 Up 08:53:18 - 09:23:18 2727
Hawthorne 09:08:16 -26.4 Dark Down 32.2 204.3 Up 08:53:16 - 09:23:16 2689
Lee Vining 09:08:17 -27.1 Dark Down 32.9 203.9 Up 08:53:17 - 09:23:17 2658
Tonopah 09:08:11 -26.5 Dark Down 32.2 205.9 Up 08:53:11 - 09:23:11 2638
Bishop 09:08:14 -27.5 Dark Down 33.2 204.8 Up 08:53:14 - 09:23:14 2606
Dunrhomin 09:07:35 -20.7 Dark Down 25.5 217.1 Low 08:52:35 - 09:22:35 2595
Beatty 09:08:08 -27.5 Dark Down 33.1 206.7 Up 08:53:08 - 09:23:08 2550
Indian Springs 09:08:04 -27.5 Dark Down 33.0 207.9 Up 08:53:04 - 09:23:04 2511
CPSLO 09:08:20 -30.0 Dark Down 35.8 202.9 Up 08:53:20 - 09:23:20 2491
Henderson 09:08:01 -27.8 Dark Down 33.2 208.8 Up 08:53:01 - 09:23:01 2462
Patrick 09:07:56 -28.0 Dark Down 33.3 210.2 Up 08:52:56 - 09:22:56 2399
Laughlin/Bullhead City 09:07:59 -28.5 Dark Down 33.8 209.5 Up 08:52:59 - 09:22:59 2392
Kingman/Dolan Springs 09:07:57 -28.3 Dark Down 33.5 210.0 Up 08:52:57 - 09:22:57 2386
Wildwood 09:08:12 -30.6 Dark Down 36.2 205.6 Up 08:53:12 - 09:23:12 2374
Mohave Valley 09:07:59 -28.7 Dark Down 34.0 209.6 Up 08:52:59 - 09:22:59 2372
Lake Havasu City 09:07:57 -29.0 Dark Down 34.3 210.0 Up 08:52:57 - 09:22:57 2338
Idyllwild 09:08:05 -30.5 Dark Down 35.9 207.7 Up 08:53:05 - 09:23:05 2320
Parker 09:07:57 -29.3 Dark Down 34.5 210.1 Up 08:52:57 - 09:22:57 2312
Blythe 09:07:58 -29.9 Dark Down 35.1 210.0 Up 08:52:58 - 09:22:58 2277
Calipatria 09:08:00 -30.7 Dark Down 35.9 209.2 Up 08:53:00 - 09:23:00 2255
George/Scottsdale 09:07:48 -28.9 Dark Down 33.9 212.8 Up 08:52:48 - 09:22:48 2240
Yuma 09:07:57 -30.8 Dark Down 35.9 210.3 Up 08:52:57 - 09:22:57 2207

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 14KD102, (2025/07/03 09:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 31.21  52
Nunki          18:55:15.9 -26:17:49  2.0 11.51  84
PPM 234707     18:33:39.1 -14:51:14  6.1  1.00  81
PPM 234786     18:36:47.5 -15:56:43  7.2  0.36  81
PPM 234758     18:35:42.1 -15:43:22  9.5  0.03  81
14KD102        18:35:35.0 -15:44:09 15.0        81
Positions are for J2000

Event circumstances last updated at 2021/03/09 01:05:20 UT

Marc W. Buie, Southwest Research Institute

RECON