RECON: TNO occultation with 14WE510

Event between 14WE510 and star GA1100:01939760 with event index number of 2570982

Geocentric closest approach at 2025/12/19 13:07:07 UTC

J2000 position of star is 06:19:50.2 +20:53:00
Equinox of date position of star is 06:21:09.1 +20:52:21
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 165 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 28.3 AU from the Sun and 27.3 AU from the Earth.
The TNO is moving 24.6 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 173 seconds.
The 1-sigma cross-track error in the shadow position is 2313 km.
The sky-plane scale is 19782.6 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=160.7 km assuming a 5% albedo -- 6.5 sec chord
Diameter=65.6 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 14WE510, (2025/12/19 13:07UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:34.7 +07:24:35  0.4 14.74 158
Alhena         06:39:12.7 +16:22:30  1.9  6.17 159
16 Gem         06:29:29.4 +20:28:41  6.1  1.94 164
PPM 122302     06:21:44.4 +19:51:39  8.5  1.01 165
PPM 095807     06:22:05.2 +21:04:38  9.0  0.26 165
14WE510        06:21:23.2 +20:52:13 15.9       165
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 20.1 km RECON observability=1.0 and success probability=12.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 13:04:56 -17.7 AT Down 20.1 278.5 Low 12:50:00 - 13:19:53 4126
Kamloops 13:04:58 -26.3 Dark Down 29.0 268.1 Low 12:50:02 - 13:19:55 3664
Kelowna 13:04:55 -25.6 Dark Down 28.5 269.2 Low 12:49:58 - 13:19:51 3635
Peachland 13:04:54 -25.8 Dark Down 28.7 269.0 Low 12:49:58 - 13:19:51 3620
Summerland 13:04:54 -25.7 Dark Down 28.6 269.2 Low 12:49:57 - 13:19:50 3613
Penticton 13:04:53 -25.6 Dark Down 28.5 269.3 Low 12:49:57 - 13:19:50 3611
Oliver 13:04:52 -25.6 Dark Down 28.5 269.5 Low 12:49:56 - 13:19:49 3588
Anarchist Mountain Observatory 13:04:51 -25.5 Dark Down 28.4 269.7 Low 12:49:55 - 13:19:48 3583
Tonasket 13:04:50 -25.5 Dark Down 28.5 269.8 Low 12:49:54 - 13:19:47 3560
Okanogan 13:04:49 -25.5 Dark Down 28.6 269.9 Low 12:49:52 - 13:19:45 3533
Brewster 13:04:49 -25.6 Dark Down 28.7 269.9 Low 12:49:52 - 13:19:45 3509
Manson/Chelan 13:04:49 -25.8 Dark Down 29.0 269.7 Low 12:49:52 - 13:19:45 3484
Wenatchee 13:04:47 -25.9 Dark Down 29.1 269.9 Low 12:49:50 - 13:19:43 3446
Victoria 13:04:54 -28.1 Dark Down 31.1 266.9 Up 12:49:57 - 13:19:50 3436
Ellensburg 13:04:45 -26.0 Dark Down 29.2 269.9 Low 12:49:49 - 13:19:42 3411
Dunrhomin 13:04:13 -13.7 AT Down 17.5 282.9 Really Low 12:49:16 - 13:19:09 3404
PNWRO 13:04:40 -24.8 Dark Down 28.1 271.7 Low 12:49:44 - 13:19:37 3390
Yakima 13:04:44 -26.0 Dark Down 29.2 270.1 Low 12:49:48 - 13:19:41 3382
Toppenish/White Swan 13:04:43 -25.8 Dark Down 29.1 270.4 Low 12:49:47 - 13:19:40 3372
Goldendale 13:04:41 -26.1 Dark Down 29.4 270.4 Low 12:49:45 - 13:19:38 3320
The Dalles 13:04:41 -26.3 Dark Down 29.7 270.2 Low 12:49:44 - 13:19:37 3293
Maupin 13:04:40 -26.2 Dark Down 29.6 270.6 Low 12:49:43 - 13:19:36 3266
Sisters 13:04:37 -26.4 Dark Down 30.0 270.7 Low 12:49:40 - 13:19:33 3187
Bend 13:04:36 -26.2 Dark Down 29.8 271.0 Low 12:49:40 - 13:19:33 3178
Oregon Observatory 13:04:35 -26.2 Dark Down 29.9 271.0 Low 12:49:39 - 13:19:32 3161
North Lake 13:04:33 -25.8 Dark Down 29.5 271.8 Low 12:49:36 - 13:19:29 3130
Lakeview 13:04:29 -25.2 Dark Down 29.0 272.7 Low 12:49:32 - 13:19:25 3068
Chiloquin 13:04:31 -26.4 Dark Down 30.2 271.5 Up 12:49:35 - 13:19:28 3049
Klamath Falls 13:04:30 -26.3 Dark Down 30.1 271.7 Up 12:49:34 - 13:19:27 3025
Cedarville 13:04:26 -25.0 Dark Down 28.9 273.2 Low 12:49:30 - 13:19:23 3023
Fall River/Burney 13:04:26 -25.8 Dark Down 29.8 272.7 Low 12:49:30 - 13:19:23 2947
Susanville 13:04:23 -25.2 Dark Down 29.2 273.5 Low 12:49:27 - 13:19:20 2922
Gimple 13:04:23 -25.3 Dark Down 29.3 273.5 Low 12:49:26 - 13:19:19 2893
Greenville 13:04:23 -25.3 Dark Down 29.4 273.5 Low 12:49:26 - 13:19:19 2890
Reno 13:04:20 -24.4 Dark Down 28.5 274.5 Low 12:49:23 - 13:19:16 2881
Portola 13:04:21 -24.9 Dark Down 29.0 273.9 Low 12:49:24 - 13:19:17 2880
Quincy 13:04:22 -25.3 Dark Down 29.4 273.6 Low 12:49:25 - 13:19:18 2874
Yerington 13:04:17 -23.8 Dark Down 27.9 275.1 Low 12:49:20 - 13:19:13 2858
Carson City 13:04:19 -24.3 Dark Down 28.5 274.7 Low 12:49:22 - 13:19:15 2853
Tonopah 13:04:12 -22.1 Dark Down 26.4 276.7 Low 12:49:16 - 13:19:09 2849
Hawthorne 13:04:15 -23.3 Dark Down 27.5 275.7 Low 12:49:19 - 13:19:12 2839
Gardnerville 13:04:17 -24.2 Dark Down 28.4 274.8 Low 12:49:21 - 13:19:14 2835
Indian Springs 13:04:06 -20.6 Dark Down 25.0 278.3 Low 12:49:10 - 13:19:03 2782
Lee Vining 13:04:14 -23.5 Dark Down 27.8 275.7 Low 12:49:17 - 13:19:10 2778
Beatty 13:04:09 -21.5 Dark Down 25.9 277.6 Low 12:49:12 - 13:19:05 2772
Henderson 13:04:04 -19.9 Dark Down 24.3 278.9 Low 12:49:07 - 13:19:00 2763
Bishop 13:04:12 -22.9 Dark Down 27.2 276.4 Low 12:49:15 - 13:19:08 2754
Patrick 13:04:01 -18.9 Dark Down 23.3 279.8 Low 12:49:05 - 13:18:58 2751
Kingman/Dolan Springs 13:04:01 -19.0 Dark Down 23.5 279.8 Low 12:49:04 - 13:18:57 2726
Laughlin/Bullhead City 13:04:01 -19.4 Dark Down 23.9 279.5 Low 12:49:05 - 13:18:58 2706
Mohave Valley 13:04:00 -19.3 Dark Down 23.8 279.6 Low 12:49:04 - 13:18:57 2684
George/Scottsdale 13:03:55 -16.8 AT Down 21.4 281.4 Low 12:48:59 - 13:18:52 2682
Lake Havasu City 13:03:59 -19.0 Dark Down 23.6 279.9 Low 12:49:03 - 13:18:56 2660
Parker 13:03:58 -18.9 Dark Down 23.5 280.1 Low 12:49:01 - 13:18:54 2632
Idyllwild 13:03:59 -20.7 Dark Down 25.4 279.1 Low 12:49:02 - 13:18:55 2514
Calipatria 13:03:56 -19.6 Dark Down 24.3 279.9 Low 12:49:00 - 13:18:53 2504
Yuma 13:03:54 -18.8 Dark Down 23.5 280.5 Low 12:48:58 - 13:18:51 2500
Wildwood 13:04:02 -22.3 Dark Down 27.0 277.9 Low 12:49:05 - 13:18:58 2478

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 14WE510, (2025/12/19 13:07UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 14.74 158
Alhena         06:37:42.8 +16:23:56  1.9  6.17 159
16 Gem         06:27:56.7 +20:29:46  6.1  1.94 164
PPM 122302     06:20:12.1 +19:52:27  8.5  1.01 165
PPM 095807     06:20:32.1 +21:05:26  9.0  0.26 165
14WE510        06:19:50.2 +20:53:00 15.9       165
Positions are for J2000

Event circumstances last updated at 2022/01/07 23:37:53 UT

Marc W. Buie, Southwest Research Institute

RECON