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 18:36:42.0 -15:43:08
Stellar brightness G=15.0, use SENSEUP=128
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 2997 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 14.0 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)
Kelowna 09:08:29 -15.7 AT Down 21.9 201.3 Low 08:53:29 - 09:23:29 3363
Summerland 09:08:30 -16.0 AT Down 22.3 201.1 Low 08:53:30 - 09:23:30 3351
Penticton 09:08:29 -16.1 AT Down 22.3 201.2 Low 08:53:29 - 09:23:29 3347
Okanagan Falls 09:08:29 -16.3 AT Down 22.5 201.2 Low 08:53:29 - 09:23:29 3338
Oliver 09:08:29 -16.4 AT Down 22.6 201.2 Low 08:53:29 - 09:23:29 3329
Anarchist Mountain Observatory 09:08:28 -16.5 AT Down 22.7 201.4 Low 08:53:28 - 09:23:28 3318
Oroville 09:08:28 -16.6 AT Down 22.8 201.4 Low 08:53:28 - 09:23:28 3315
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 09:08:28 -17.5 AT Down 23.7 201.2 Low 08:53:28 - 09:23:28 3276
Manson/Chelan 09:08:29 -17.8 AT Down 24.0 200.8 Low 08:53:29 - 09:23:29 3269
Entiat 09:08:29 -18.0 AT Down 24.2 200.8 Low 08:53:29 - 09:23:29 3259
Wenatchee 09:08:29 -18.3 Dark Down 24.5 200.7 Low 08:53:29 - 09:23:29 3246
Ellensburg 09:08:30 -18.7 Dark Down 24.9 200.6 Low 08:53:30 - 09:23:30 3227
Yakima 09:08:29 -19.1 Dark Down 25.3 200.6 Low 08:53:29 - 09:23:29 3205
Toppenish/White Swan 09:08:29 -19.3 Dark Down 25.5 200.8 Low 08:53:29 - 09:23:29 3191
Pasco 09:08:25 -19.1 Dark Down 25.2 202.1 Low 08:53:25 - 09:23:25 3169
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
George/Umatilla 09:08:25 -19.5 Dark Down 25.6 202.0 Low 08:53:25 - 09:23:25 3154
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 3132
Madras/Culver 09:08:29 -21.1 Dark Down 27.3 200.4 Low 08:53:29 - 09:23:29 3102
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 3071
Oregon Observatory 09:08:29 -21.9 Dark Down 28.0 200.2 Low 08:53:29 - 09:23:29 3062
La Pine/Gilchrist 09:08:30 -22.1 Dark Down 28.3 200.1 Low 08:53:30 - 09:23:30 3051
North Lake 09:08:27 -22.4 Dark Down 28.5 200.9 Low 08:53:27 - 09:23:27 3018
Chiloquin 09:08:30 -23.2 Dark Down 29.4 200.0 Low 08:53:30 - 09:23:30 2988
Paisley 09:08:26 -22.8 Dark Down 28.9 201.3 Low 08:53:26 - 09:23:26 2980
Klamath Falls 09:08:29 -23.5 Dark Down 29.7 200.1 Low 08:53:29 - 09:23:29 2966
Lakeview 09:08:24 -23.3 Dark Down 29.4 201.6 Low 08:53:24 - 09:23:24 2947
Tulelake 09:08:28 -23.7 Dark Down 29.9 200.5 Low 08:53:28 - 09:23:28 2946
Cedarville 09:08:24 -23.9 Dark Down 29.9 202.0 Low 08:53:24 - 09:23:24 2904
Fall River/Burney 09:08:27 -24.6 Dark Down 30.7 200.8 Up 08:53:27 - 09:23:27 2888
Susanville 09:08:24 -25.1 Dark Down 31.1 201.7 Up 08:53:24 - 09:23:24 2839
Greenville 09:08:25 -25.4 Dark Down 31.4 201.4 Up 08:53:25 - 09:23:25 2825
Gimple 09:08:24 -25.4 Dark Down 31.4 201.5 Up 08:53:24 - 09:23:24 2824
Quincy 09:08:25 -25.6 Dark Down 31.6 201.5 Up 08:53:25 - 09:23:25 2812
Portola 09:08:23 -25.6 Dark Down 31.6 202.0 Up 08:53:23 - 09:23:23 2797
Reno 09:08:20 -25.7 Dark Down 31.6 202.8 Up 08:53:20 - 09:23:20 2772
Carson City 09:08:20 -26.1 Dark Down 32.0 202.9 Up 08:53:20 - 09:23:20 2748
Gardnerville 09:08:20 -26.3 Dark Down 32.2 203.0 Up 08:53:20 - 09:23:20 2731
Yerington 09:08:18 -26.1 Dark Down 32.0 203.6 Up 08:53:18 - 09:23:18 2726
Hawthorne 09:08:16 -26.4 Dark Down 32.2 204.3 Up 08:53:16 - 09:23:16 2688
Lee Vining 09:08:17 -27.1 Dark Down 32.9 203.9 Up 08:53:17 - 09:23:17 2656
Tonopah 09:08:11 -26.5 Dark Down 32.2 205.9 Up 08:53:11 - 09:23:11 2636
Bishop 09:08:14 -27.5 Dark Down 33.2 204.8 Up 08:53:14 - 09:23:14 2605
Niwot 09:07:35 -20.8 Dark Down 25.6 217.2 Low 08:52:35 - 09:22:35 2584
SwRI 09:07:35 -20.9 Dark Down 25.7 217.1 Low 08:52:35 - 09:22:35 2579
Beatty 09:08:08 -27.5 Dark Down 33.1 206.7 Up 08:53:08 - 09:23:08 2549
Lone Pine 09:08:12 -28.1 Dark Down 33.8 205.4 Up 08:53:12 - 09:23:12 2547
Indian Springs 09:08:04 -27.5 Dark Down 33.0 207.9 Up 08:53:04 - 09:23:04 2510
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 2461
Searchlight/Boulder City 09:08:00 -28.3 Dark Down 33.6 209.1 Up 08:53:00 - 09:23:00 2419
Patrick 09:07:56 -28.0 Dark Down 33.3 210.2 Up 08:52:56 - 09:22:56 2399
Laughlin/Bullhead City 09:07:58 -28.5 Dark Down 33.8 209.5 Up 08:52:58 - 09:22:58 2392
Kingman/Dolan Springs 09:07:57 -28.3 Dark Down 33.5 210.0 Up 08:52:57 - 09:22:57 2385
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
DCO 09:07:54 -28.1 Dark Down 33.2 211.0 Up 08:52:54 - 09:22:54 2365
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 2319
Parker 09:07:57 -29.3 Dark Down 34.5 210.1 Up 08:52:57 - 09:22:57 2312
Blythe 09:07:57 -29.9 Dark Down 35.1 210.0 Up 08:52:57 - 09:22:57 2277
Calipatria 09:08:00 -30.7 Dark Down 35.9 209.2 Up 08:53:00 - 09:23:00 2255
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 2019/06/08 12:35:43 UT

Marc W. Buie, Southwest Research Institute

RECON