RECON: TNO occultation with 14WC509

Event between 14WC509 and star GA1100:02985564 with event index number of 2683701

Geocentric closest approach at 2026/03/30 08:35:59 UTC

J2000 position of star is 08:02:45.4 +21:09:41
Equinox of date position of star is 08:04:03.1 +21:05:54
Stellar brightness G=13.9, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 39 degrees from the moon. Moon is 92% illuminated.
TNO apparent brightness V=22.5

[RECON map]
TNO is 33.7 AU from the Sun and 33.3 AU from the Earth.
The TNO is moving 5.0 km/sec on the sky relative to the star, or, 0.7 arcsec/hr.
The 1-sigma error in the time of the event is 613 seconds.
The 1-sigma cross-track error in the shadow position is 1630 km.
The sky-plane scale is 24182.6 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 46.0 sec chord
Diameter=93.5 km assuming a 30% albedo -- 18.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 14WC509, (2026/03/30 08:21UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:55.3 +27:57:38  1.1  7.93  44
10Mu 2Cnc      08:09:18.3 +21:30:13  5.3  1.24  38
PPM 098305     08:06:00.2 +20:55:57  7.8  0.43  38
PPM 098259     08:04:23.6 +20:52:13 10.0  0.22  39
14WC509        08:04:17.7 +21:05:11 13.9        38
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 1.5 sigma about the mid-time.
The median site spacing is 24.1 km RECON observability=0.9 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)
Sleaford 08:22:08 -31.9 Dark Up 18.6 280.9 Really Low 08:07:08 - 08:37:08 4862
Kamloops 08:22:26 -35.4 Dark Up 27.3 270.6 Low 08:07:26 - 08:37:26 4412
Kelowna 08:22:13 -36.1 Dark Up 26.8 271.7 Low 08:07:13 - 08:37:13 4368
Peachland 08:22:14 -36.3 Dark Up 27.0 271.5 Low 08:07:14 - 08:37:14 4352
Summerland 08:22:09 -36.4 Dark Up 26.9 271.6 Low 08:07:09 - 08:37:09 4342
Penticton 08:22:09 -36.5 Dark Up 26.8 271.7 Low 08:07:09 - 08:37:09 4339
Oliver 08:22:01 -36.8 Dark Up 26.8 271.9 Low 08:07:01 - 08:37:01 4311
Anarchist Mountain Observatory 08:21:58 -37.0 Dark Up 26.7 272.1 Low 08:06:58 - 08:36:58 4302
Tonasket 08:21:54 -37.3 Dark Up 26.8 272.2 Low 08:06:54 - 08:36:54 4275
Okanogan 08:21:53 -37.6 Dark Up 26.8 272.3 Low 08:06:53 - 08:36:53 4244
Brewster 08:21:53 -37.9 Dark Up 27.0 272.3 Low 08:06:53 - 08:36:53 4216
Manson/Chelan 08:21:53 -38.2 Dark Up 27.2 272.1 Low 08:06:53 - 08:36:53 4190
Victoria 08:22:11 -37.7 Dark Up 29.3 269.4 Low 08:07:11 - 08:37:11 4165
Wenatchee 08:21:53 -38.6 Dark Up 27.3 272.2 Low 08:06:53 - 08:36:53 4147
Ellensburg 08:21:53 -39.1 Dark Up 27.4 272.3 Low 08:06:53 - 08:36:53 4108
Yakima 08:21:53 -39.5 Dark Up 27.4 272.5 Low 08:06:53 - 08:36:53 4074
PNWRO 08:21:53 -39.9 Dark Up 26.2 273.9 Low 08:06:53 - 08:36:53 4070
Toppenish/White Swan 08:21:53 -39.7 Dark Up 27.3 272.7 Low 08:06:53 - 08:36:53 4060
Goldendale 08:21:53 -40.3 Dark Up 27.6 272.7 Low 08:06:53 - 08:36:53 4004
The Dalles 08:21:53 -40.5 Dark Up 27.8 272.6 Low 08:06:53 - 08:36:53 3975
Dunrhomin 08:19:07 -42.8 Dark Up 15.9 284.5 Really Low 08:04:07 - 08:34:07 3960
Maupin 08:21:53 -40.9 Dark Up 27.7 272.8 Low 08:06:53 - 08:36:53 3944
Sisters 08:21:53 -41.8 Dark Up 28.0 273.0 Low 08:06:53 - 08:36:53 3858
Bend 08:21:53 -42.0 Dark Up 27.8 273.3 Low 08:06:53 - 08:36:53 3846
Oregon Observatory 08:21:53 -42.2 Dark Up 27.9 273.3 Low 08:06:53 - 08:36:53 3828
North Lake 08:21:53 -42.8 Dark Up 27.5 274.0 Low 08:06:53 - 08:36:53 3791
Lakeview 08:21:53 -43.8 Dark Up 27.0 274.9 Low 08:06:53 - 08:36:53 3721
Chiloquin 08:21:53 -43.6 Dark Up 28.1 273.7 Low 08:06:53 - 08:36:53 3707
Klamath Falls 08:21:53 -43.9 Dark Up 28.1 273.9 Low 08:06:53 - 08:36:53 3682
Cedarville 08:21:53 -44.5 Dark Up 26.8 275.3 Low 08:06:53 - 08:36:53 3673
Fall River/Burney 08:21:53 -45.1 Dark Up 27.7 274.8 Low 08:06:53 - 08:36:53 3597
Susanville 08:21:53 -45.6 Dark Up 27.1 275.6 Low 08:06:53 - 08:36:53 3569
Gimple 08:21:53 -45.9 Dark Up 27.2 275.6 Low 08:06:53 - 08:36:53 3540
Greenville 08:21:53 -45.9 Dark Up 27.3 275.5 Low 08:06:53 - 08:36:53 3538
Portola 08:21:53 -46.2 Dark Up 26.9 276.0 Low 08:06:53 - 08:36:53 3527
Reno 08:21:53 -46.4 Dark Up 26.3 276.5 Low 08:06:53 - 08:36:53 3527
Quincy 08:21:53 -46.1 Dark Up 27.2 275.7 Low 08:06:53 - 08:36:53 3521
Yerington 08:21:53 -46.9 Dark Up 25.8 277.2 Low 08:06:53 - 08:36:53 3505
Carson City 08:21:53 -46.8 Dark Up 26.3 276.7 Low 08:06:53 - 08:36:53 3499
Tonopah 08:21:53 -47.6 Dark Up 24.1 278.7 Low 08:06:53 - 08:36:53 3499
Hawthorne 08:21:53 -47.3 Dark Up 25.3 277.7 Low 08:06:53 - 08:36:53 3486
Gardnerville 08:21:53 -47.0 Dark Up 26.2 276.9 Low 08:06:53 - 08:36:53 3482
Lee Vining 08:21:53 -47.9 Dark Up 25.6 277.7 Low 08:06:53 - 08:36:53 3427
Indian Springs 08:18:52 -48.9 Dark Up 23.3 279.8 Low 08:03:52 - 08:33:52 3315
Beatty 08:19:04 -48.8 Dark Up 24.1 279.1 Low 08:04:04 - 08:34:04 3314
Bishop 08:19:16 -48.5 Dark Up 25.5 278.0 Low 08:04:16 - 08:34:16 3309
Henderson 08:18:44 -49.3 Dark Up 22.7 280.4 Low 08:03:44 - 08:33:44 3287
Patrick 08:18:32 -49.7 Dark Up 21.7 281.2 Low 08:03:32 - 08:33:32 3262
Kingman/Dolan Springs 08:18:30 -50.0 Dark Up 21.8 281.2 Low 08:03:30 - 08:33:30 3236
Laughlin/Bullhead City 08:18:33 -50.1 Dark Up 22.2 280.9 Low 08:03:33 - 08:33:33 3218
Mohave Valley 08:18:30 -50.4 Dark Up 22.2 281.0 Low 08:03:30 - 08:33:30 3192
George/Scottsdale 08:18:05 -50.9 Dark Up 19.8 282.8 Really Low 08:03:05 - 08:33:05 3167
Lake Havasu City 08:18:23 -50.7 Dark Up 21.9 281.3 Low 08:03:23 - 08:33:23 3162
Parker 08:18:19 -51.1 Dark Up 21.8 281.4 Low 08:03:19 - 08:33:19 3130
Idyllwild 08:18:26 -51.9 Dark Up 23.7 280.4 Low 08:03:26 - 08:33:26 3017
Calipatria 08:18:16 -52.3 Dark Up 22.6 281.2 Low 08:03:16 - 08:33:16 2995
Wildwood 08:18:42 -51.8 Dark Up 25.3 279.4 Low 08:03:42 - 08:33:42 2994
Yuma 08:18:05 -52.6 Dark Up 21.9 281.8 Low 08:03:05 - 08:33:05 2982

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 14WC509, (2026/03/30 08:21UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1  7.93  44
10Mu 2Cnc      08:07:45.9 +21:34:53  5.3  1.24  38
PPM 098305     08:04:28.0 +21:00:30  7.8  0.43  38
PPM 098259     08:02:51.4 +20:56:44 10.0  0.22  39
14WC509        08:02:45.4 +21:09:41 13.9        39
Positions are for J2000

Event circumstances last updated at 2022/02/02 01:34:59 UT

Marc W. Buie, Southwest Research Institute

RECON