RECON: TNO occultation with 06QJ181

Event between 06QJ181 and star GA1000:02307457 with event index number of 2014452

Geocentric closest approach at 2026/01/04 10:36:50 UTC

J2000 position of star is 06:52:41.6 +11:05:50
Equinox of date position of star is 06:53:54.9 +11:04:08
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=22.0

[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=7.0
Diameter=241.0 km assuming a 5% albedo -- 10.0 sec chord
Diameter=98.4 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is 3:1EE+3:1II
 
 
 
 
 
 

Star training set for 06QJ181, (2026/01/04 10:27UT)
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  21
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
06QJ181        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=14.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 10:34:42 -41.1 Dark Up 30.6 246.7 Up 10:19:42 - 10:49:42 4040
Kamloops 10:35:07 -49.8 Dark Up 39.1 233.2 Up 10:20:07 - 10:50:07 3777
Kelowna 10:35:03 -49.7 Dark Up 39.1 234.6 Up 10:20:03 - 10:50:03 3719
Peachland 10:35:04 -50.0 Dark Up 39.3 234.4 Up 10:20:04 - 10:50:04 3708
Summerland 10:35:03 -50.0 Dark Up 39.3 234.6 Up 10:20:03 - 10:50:03 3696
Penticton 10:35:03 -50.0 Dark Up 39.3 234.8 Up 10:20:03 - 10:50:03 3692
Oliver 10:35:02 -50.1 Dark Up 39.5 235.0 Up 10:20:02 - 10:50:02 3663
Anarchist Mountain Observatory 10:35:01 -50.1 Dark Up 39.5 235.3 Up 10:20:01 - 10:50:01 3651
Tonasket 10:35:01 -50.3 Dark Up 39.7 235.5 Up 10:20:01 - 10:50:01 3624
Okanogan 10:35:00 -50.5 Dark Up 40.0 235.5 Up 10:20:00 - 10:50:00 3594
Victoria 10:35:10 -52.6 Dark Up 41.9 231.3 Up 10:20:10 - 10:50:10 3570
Brewster 10:35:00 -50.8 Dark Up 40.3 235.5 Up 10:20:00 - 10:50:00 3570
Manson/Chelan 10:35:01 -51.1 Dark Up 40.6 235.2 Up 10:20:01 - 10:50:01 3548
Wenatchee 10:35:00 -51.4 Dark Up 41.0 235.4 Up 10:20:00 - 10:50:00 3506
Ellensburg 10:34:59 -51.7 Dark Up 41.3 235.5 Up 10:19:59 - 10:49:59 3469
Yakima 10:34:59 -51.9 Dark Up 41.6 235.7 Up 10:19:59 - 10:49:59 3434
Toppenish/White Swan 10:34:58 -51.9 Dark Up 41.6 236.1 Up 10:19:58 - 10:49:58 3417
PNWRO 10:34:53 -51.1 Dark Up 40.9 237.9 Up 10:19:53 - 10:49:53 3401
Goldendale 10:34:58 -52.4 Dark Up 42.1 236.0 Up 10:19:58 - 10:49:58 3364
The Dalles 10:34:58 -52.7 Dark Up 42.5 235.8 Up 10:19:58 - 10:49:58 3341
Maupin 10:34:57 -52.8 Dark Up 42.7 236.2 Up 10:19:57 - 10:49:57 3305
Sisters 10:34:56 -53.5 Dark Up 43.4 236.4 Up 10:19:56 - 10:49:56 3223
Bend 10:34:55 -53.5 Dark Up 43.4 236.8 Up 10:19:55 - 10:49:55 3204
Oregon Observatory 10:34:55 -53.6 Dark Up 43.6 236.8 Up 10:19:55 - 10:49:55 3187
North Lake 10:34:53 -53.5 Dark Up 43.6 237.9 Up 10:19:53 - 10:49:53 3136
Chiloquin 10:34:54 -54.4 Dark Up 44.6 237.5 Up 10:19:54 - 10:49:54 3064
Dunrhomin 10:34:09 -43.0 Dark Up 34.2 254.3 Up 10:19:09 - 10:49:09 3064
Lakeview 10:34:49 -53.5 Dark Up 43.8 239.3 Up 10:19:49 - 10:49:49 3046
Klamath Falls 10:34:53 -54.5 Dark Up 44.7 237.8 Up 10:19:53 - 10:49:53 3034
Cedarville 10:34:47 -53.6 Dark Up 44.0 240.1 Up 10:19:47 - 10:49:47 2988
Fall River/Burney 10:34:49 -54.7 Dark Up 45.1 239.2 Up 10:19:49 - 10:49:49 2930
Susanville 10:34:46 -54.3 Dark Up 44.9 240.5 Up 10:19:46 - 10:49:46 2880
Gimple 10:34:46 -54.6 Dark Up 45.2 240.5 Up 10:19:46 - 10:49:46 2851
Greenville 10:34:46 -54.6 Dark Up 45.3 240.5 Up 10:19:46 - 10:49:46 2851
Quincy 10:34:46 -54.7 Dark Up 45.3 240.6 Up 10:19:46 - 10:49:46 2832
Portola 10:34:44 -54.4 Dark Up 45.1 241.2 Up 10:19:44 - 10:49:44 2826
Reno 10:34:42 -54.0 Dark Up 44.8 242.1 Up 10:19:42 - 10:49:42 2808
Carson City 10:34:41 -54.1 Dark Up 44.9 242.4 Up 10:19:41 - 10:49:41 2775
Yerington 10:34:39 -53.7 Dark Up 44.6 243.2 Up 10:19:39 - 10:49:39 2764
Gardnerville 10:34:41 -54.1 Dark Up 45.0 242.7 Up 10:19:41 - 10:49:41 2752
Hawthorne 10:34:37 -53.4 Dark Up 44.4 244.1 Up 10:19:37 - 10:49:37 2727
Tonopah 10:34:32 -52.4 Dark Up 43.6 245.9 Up 10:19:32 - 10:49:32 2700
Lee Vining 10:34:37 -53.9 Dark Up 45.0 244.2 Up 10:19:37 - 10:49:37 2667
Bishop 10:34:34 -53.5 Dark Up 44.8 245.4 Up 10:19:34 - 10:49:34 2619
Beatty 10:34:29 -52.3 Dark Up 43.8 247.3 Up 10:19:29 - 10:49:29 2595
Indian Springs 10:34:25 -51.5 Dark Up 43.1 248.5 Up 10:19:25 - 10:49:25 2578
Henderson 10:34:23 -51.1 Dark Up 42.8 249.6 Up 10:19:23 - 10:49:23 2535
Patrick 10:34:18 -50.3 Dark Up 42.2 251.0 Up 10:19:18 - 10:49:18 2490
Kingman/Dolan Springs 10:34:18 -50.5 Dark Up 42.4 251.1 Up 10:19:18 - 10:49:18 2466
Laughlin/Bullhead City 10:34:20 -50.9 Dark Up 42.8 250.7 Up 10:19:20 - 10:49:20 2456
Mohave Valley 10:34:19 -50.9 Dark Up 42.9 250.9 Up 10:19:19 - 10:49:19 2430
Lake Havasu City 10:34:18 -50.7 Dark Up 42.8 251.4 Up 10:19:18 - 10:49:18 2394
Parker 10:34:17 -50.8 Dark Up 42.9 251.8 Up 10:19:17 - 10:49:17 2360
George/Scottsdale 10:34:10 -48.8 Dark Up 41.1 254.0 Up 10:19:10 - 10:49:10 2353
Wildwood 10:34:29 -54.3 Dark Up 46.2 248.2 Up 10:19:29 - 10:49:29 2299
Idyllwild 10:34:23 -52.8 Dark Up 44.9 250.2 Up 10:19:23 - 10:49:23 2288
Calipatria 10:34:19 -51.9 Dark Up 44.2 251.7 Up 10:19:19 - 10:49:19 2243
Yuma 10:34:15 -51.2 Dark Up 43.6 252.8 Up 10:19:15 - 10:49:15 2213

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 06QJ181, (2026/01/04 10:27UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 14.66  35
Alhena         06:37:42.8 +16:23:57  1.9  6.43  21
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
06QJ181        06:52:41.6 +11:05:50 13.8        21
Positions are for J2000

Event circumstances last updated at 2022/01/07 23:44:32 UT

Marc W. Buie, Southwest Research Institute

RECON