RECON: TNO occultation with 613469

Event between (613469) 06QJ181 and star GA1000:02420803 with event index number of 2809947

Geocentric closest approach at 2026/01/04 10:36:48 UTC

J2000 position of star is 06:52:41.6 +11:05:50
Equinox of date position of star is 06:53:56.0 +11:04:07
Stellar brightness G=13.8, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 21 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 31.6 AU from the Sun and 30.7 AU from the Earth.
The TNO is moving 24.1 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 184 seconds.
The 1-sigma cross-track error in the shadow position is 2035 km.
The sky-plane scale is 22256.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=231.2 km assuming a 5% albedo -- 9.6 sec chord
Diameter=94.4 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is 3:1EE+3:1II
 
 
 
 
 
 

Star training set for 613469, (2026/01/04 10:37UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:34.8 +07:24:35  0.4 14.66  35
Alhena         06:39:12.8 +16:22:29  1.9  6.43  22
PPM 151572     06:57:51.7 +09:55:14  5.9  1.46  21
PPM 123208     06:54:48.9 +10:57:43  7.4  0.20  21
613469         06:54:08.2 +11:03:50 13.8        21
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 4.9 sigma about the mid-time.
The median site spacing is 26.4 km RECON observability=1.0 and success probability=14.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 10:34:40 -41.1 Dark Up 30.6 246.7 Up 10:19:40 - 10:49:40 3975
Kamloops 10:35:05 -49.8 Dark Up 39.1 233.2 Up 10:20:05 - 10:50:05 3713
Kelowna 10:35:02 -49.7 Dark Up 39.1 234.6 Up 10:20:02 - 10:50:02 3655
Peachland 10:35:02 -50.0 Dark Up 39.3 234.4 Up 10:20:02 - 10:50:02 3643
Summerland 10:35:01 -50.0 Dark Up 39.3 234.6 Up 10:20:01 - 10:50:01 3632
Penticton 10:35:00 -50.0 Dark Up 39.3 234.8 Up 10:20:00 - 10:50:00 3627
Oliver 10:35:00 -50.1 Dark Up 39.5 235.0 Up 10:20:00 - 10:50:00 3598
Anarchist Mountain Observatory 10:34:59 -50.1 Dark Up 39.5 235.3 Up 10:19:59 - 10:49:59 3586
Tonasket 10:34:59 -50.3 Dark Up 39.7 235.4 Up 10:19:59 - 10:49:59 3560
Okanogan 10:34:58 -50.5 Dark Up 40.0 235.5 Up 10:19:58 - 10:49:58 3530
Victoria 10:35:08 -52.6 Dark Up 41.9 231.3 Up 10:20:08 - 10:50:08 3505
Brewster 10:34:58 -50.8 Dark Up 40.3 235.5 Up 10:19:58 - 10:49:58 3505
Manson/Chelan 10:34:58 -51.1 Dark Up 40.6 235.2 Up 10:19:58 - 10:49:58 3484
Wenatchee 10:34:58 -51.4 Dark Up 41.0 235.4 Up 10:19:58 - 10:49:58 3442
Ellensburg 10:34:57 -51.7 Dark Up 41.3 235.4 Up 10:19:57 - 10:49:57 3404
Yakima 10:34:57 -51.9 Dark Up 41.6 235.7 Up 10:19:57 - 10:49:57 3369
Toppenish/White Swan 10:34:56 -51.9 Dark Up 41.6 236.1 Up 10:19:56 - 10:49:56 3352
PNWRO 10:34:51 -51.1 Dark Up 40.9 237.9 Up 10:19:51 - 10:49:51 3336
Goldendale 10:34:56 -52.4 Dark Up 42.2 236.0 Up 10:19:56 - 10:49:56 3300
The Dalles 10:34:56 -52.7 Dark Up 42.5 235.8 Up 10:19:56 - 10:49:56 3276
Maupin 10:34:55 -52.8 Dark Up 42.7 236.2 Up 10:19:55 - 10:49:55 3241
Sisters 10:34:54 -53.5 Dark Up 43.4 236.4 Up 10:19:54 - 10:49:54 3158
Bend 10:34:53 -53.5 Dark Up 43.4 236.8 Up 10:19:53 - 10:49:53 3140
Oregon Observatory 10:34:53 -53.6 Dark Up 43.6 236.8 Up 10:19:53 - 10:49:53 3123
North Lake 10:34:51 -53.5 Dark Up 43.6 237.9 Up 10:19:51 - 10:49:51 3072
Chiloquin 10:34:52 -54.4 Dark Up 44.6 237.5 Up 10:19:52 - 10:49:52 3000
Dunrhomin 10:34:07 -43.0 Dark Up 34.2 254.3 Up 10:19:07 - 10:49:07 2999
Lakeview 10:34:47 -53.5 Dark Up 43.8 239.3 Up 10:19:47 - 10:49:47 2982
CU-SBO 10:34:06 -43.1 Dark Up 34.3 254.4 Up 10:19:06 - 10:49:06 2975
Klamath Falls 10:34:51 -54.5 Dark Up 44.7 237.8 Up 10:19:51 - 10:49:51 2970
Cedarville 10:34:45 -53.6 Dark Up 44.1 240.1 Up 10:19:45 - 10:49:45 2924
Fall River/Burney 10:34:47 -54.7 Dark Up 45.1 239.2 Up 10:19:47 - 10:49:47 2865
Susanville 10:34:44 -54.4 Dark Up 44.9 240.5 Up 10:19:44 - 10:49:44 2815
Gimple 10:34:44 -54.6 Dark Up 45.2 240.5 Up 10:19:44 - 10:49:44 2787
Greenville 10:34:45 -54.6 Dark Up 45.3 240.5 Up 10:19:45 - 10:49:45 2786
Quincy 10:34:44 -54.7 Dark Up 45.4 240.6 Up 10:19:44 - 10:49:44 2767
Portola 10:34:42 -54.4 Dark Up 45.1 241.2 Up 10:19:42 - 10:49:42 2761
Reno 10:34:40 -54.0 Dark Up 44.8 242.1 Up 10:19:40 - 10:49:40 2744
Carson City 10:34:39 -54.1 Dark Up 44.9 242.4 Up 10:19:39 - 10:49:39 2710
Yerington 10:34:38 -53.7 Dark Up 44.6 243.2 Up 10:19:38 - 10:49:38 2700
Gardnerville 10:34:39 -54.1 Dark Up 45.0 242.7 Up 10:19:39 - 10:49:39 2688
Hawthorne 10:34:35 -53.4 Dark Up 44.4 244.1 Up 10:19:35 - 10:49:35 2662
Tonopah 10:34:31 -52.4 Dark Up 43.6 245.9 Up 10:19:31 - 10:49:31 2636
Lee Vining 10:34:35 -53.9 Dark Up 45.0 244.2 Up 10:19:35 - 10:49:35 2603
Bishop 10:34:32 -53.5 Dark Up 44.8 245.4 Up 10:19:32 - 10:49:32 2554
Beatty 10:34:27 -52.3 Dark Up 43.8 247.3 Up 10:19:27 - 10:49:27 2531
Indian Springs 10:34:24 -51.6 Dark Up 43.1 248.5 Up 10:19:24 - 10:49:24 2513
Henderson 10:34:20 -51.1 Dark Up 42.8 249.6 Up 10:19:20 - 10:49:20 2471
Patrick 10:34:17 -50.3 Dark Up 42.2 251.0 Up 10:19:17 - 10:49:17 2425
Kingman/Dolan Springs 10:34:17 -50.5 Dark Up 42.4 251.1 Up 10:19:17 - 10:49:17 2401
Laughlin/Bullhead City 10:34:18 -50.9 Dark Up 42.8 250.7 Up 10:19:18 - 10:49:18 2392
Mohave Valley 10:34:17 -50.9 Dark Up 42.9 250.9 Up 10:19:17 - 10:49:17 2365
Lake Havasu City 10:34:16 -50.8 Dark Up 42.8 251.4 Up 10:19:16 - 10:49:16 2330
Parker 10:34:15 -50.8 Dark Up 42.9 251.8 Up 10:19:15 - 10:49:15 2296
George/Scottsdale 10:34:08 -48.8 Dark Up 41.1 254.0 Up 10:19:08 - 10:49:08 2288
Wildwood 10:34:27 -54.3 Dark Up 46.2 248.2 Up 10:19:27 - 10:49:27 2234
Idyllwild 10:34:21 -52.8 Dark Up 44.9 250.2 Up 10:19:21 - 10:49:21 2224
Calipatria 10:34:17 -51.9 Dark Up 44.2 251.7 Up 10:19:17 - 10:49:17 2179
Yuma 10:34:14 -51.2 Dark Up 43.6 252.8 Up 10:19:14 - 10:49:14 2149

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 613469, (2026/01/04 10:37UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 14.66  35
Alhena         06:37:42.8 +16:23:56  1.9  6.43  22
PPM 151572     06:56:25.8 +09:57:23  5.9  1.46  21
PPM 123208     06:53:22.4 +10:59:45  7.4  0.20  21
613469         06:52:41.6 +11:05:50 13.8        21
Positions are for J2000

Event circumstances last updated at 2022/05/04 23:14:56 UT

Marc W. Buie, Southwest Research Institute

RECON