RECON: TNO occultation with 12DQ106

Event between 12DQ106 and star GA0800:04356508 with event index number of 2143691

Geocentric closest approach at 2026/05/24 06:45:45 UTC

J2000 position of star is 13:20:27.6 -09:38:50
Equinox of date position of star is 13:21:37.9 -09:45:49
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 39 degrees from the moon. Moon is 59% illuminated.
TNO apparent brightness V=23.0

[RECON map]
TNO is 37.6 AU from the Sun and 36.8 AU from the Earth.
The TNO is moving 17.4 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 326 seconds.
The 1-sigma cross-track error in the shadow position is 3339 km.
The sky-plane scale is 26725.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=215.8 km assuming a 5% albedo -- 12.4 sec chord
Diameter=88.1 km assuming a 30% albedo -- 5.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 12DQ106, (2026/05/24 06:46UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:35.3 -11:17:54  1.0  1.91  41
50 Vir         13:11:08.4 -10:28:10  5.8  2.72  37
PPM 196428     13:22:35.4 -10:08:11  7.4  0.40  39
PPM 196394     13:21:00.0 -09:55:46  9.2  0.25  39
12DQ106        13:21:50.9 -09:47:06 14.9        40
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 2.8 sigma about the mid-time.
The median site spacing is 10.6 km RECON observability=1.0 and success probability=4.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 06:45:43 -17.1 AT Up 20.5 219.6 Low 06:30:43 - 07:00:43 6789
Kamloops 06:46:25 -16.8 AT Up 26.5 205.5 Low 06:31:25 - 07:01:25 6479
Kelowna 06:46:20 -17.7 AT Up 26.9 206.6 Low 06:31:20 - 07:01:20 6466
Peachland 06:46:21 -17.8 AT Up 27.1 206.3 Low 06:31:21 - 07:01:21 6456
Summerland 06:46:19 -18.0 AT Up 27.2 206.4 Low 06:31:19 - 07:01:19 6452
Penticton 06:46:18 -18.0 Dark Up 27.3 206.6 Low 06:31:18 - 07:01:18 6452
Oliver 06:46:18 -18.4 Dark Up 27.6 206.7 Low 06:31:18 - 07:01:18 6437
Anarchist Mountain Observatory 06:46:17 -18.6 Dark Up 27.7 206.9 Low 06:31:17 - 07:01:17 6435
Tonasket 06:46:15 -18.9 Dark Up 28.0 206.9 Low 06:31:15 - 07:01:15 6420
Okanogan 06:46:15 -19.2 Dark Up 28.3 206.8 Low 06:31:15 - 07:01:15 6403
Brewster 06:46:15 -19.4 Dark Up 28.6 206.7 Low 06:31:15 - 07:01:15 6386
Manson/Chelan 06:46:17 -19.5 Dark Up 28.9 206.3 Low 06:31:17 - 07:01:17 6369
Wenatchee 06:46:14 -19.9 Dark Up 29.4 206.2 Low 06:31:14 - 07:01:14 6345
Victoria 06:46:31 -18.2 Dark Up 29.2 202.7 Low 06:31:31 - 07:01:31 6323
Ellensburg 06:46:15 -20.3 Dark Up 29.8 206.1 Low 06:31:15 - 07:01:15 6321
Dunrhomin 06:44:54 -28.9 Dark Up 29.1 223.8 Low 06:29:54 - 06:59:54 6319
PNWRO 06:46:04 -21.5 Dark Up 30.2 208.1 Up 06:31:04 - 07:01:04 6314
CU-SBO 06:44:53 -29.1 Dark Up 29.3 223.8 Low 06:29:53 - 06:59:53 6304
Yakima 06:46:13 -20.6 Dark Up 30.2 206.2 Up 06:31:13 - 07:01:13 6303
Toppenish/White Swan 06:46:12 -20.9 Dark Up 30.3 206.4 Up 06:31:12 - 07:01:12 6296
Goldendale 06:46:12 -21.3 Dark Up 31.0 206.1 Up 06:31:12 - 07:01:12 6261
The Dalles 06:46:14 -21.4 Dark Up 31.3 205.8 Up 06:31:14 - 07:01:14 6241
Maupin 06:46:10 -21.9 Dark Up 31.6 206.0 Up 06:31:10 - 07:01:10 6224
Sisters 06:46:10 -22.6 Dark Up 32.6 205.7 Up 06:31:10 - 07:01:10 6169
Bend 06:46:10 -22.9 Dark Up 32.7 206.0 Up 06:31:10 - 07:01:10 6164
Oregon Observatory 06:46:10 -23.0 Dark Up 32.9 205.9 Up 06:31:10 - 07:01:10 6152
North Lake 06:46:03 -23.7 Dark Up 33.3 206.7 Up 06:31:03 - 07:01:03 6133
Lakeview 06:45:59 -24.9 Dark Up 34.1 207.6 Up 06:30:59 - 07:00:59 6092
Chiloquin 06:46:08 -24.1 Dark Up 34.2 205.8 Up 06:31:08 - 07:01:08 6074
Cedarville 06:45:58 -25.5 Dark Up 34.6 208.0 Up 06:30:58 - 07:00:58 6061
Klamath Falls 06:46:04 -24.5 Dark Up 34.5 206.0 Up 06:31:04 - 07:01:04 6058
Fall River/Burney 06:46:00 -25.7 Dark Up 35.4 206.8 Up 06:31:00 - 07:01:00 6003
Susanville 06:45:55 -26.5 Dark Up 35.8 207.8 Up 06:30:55 - 07:00:55 5987
Gimple 06:45:55 -26.7 Dark Up 36.1 207.7 Up 06:30:55 - 07:00:55 5966
Greenville 06:45:56 -26.6 Dark Up 36.1 207.6 Up 06:30:56 - 07:00:56 5964
Reno 06:45:47 -27.5 Dark Up 36.2 209.0 Up 06:30:47 - 07:00:47 5960
Portola 06:45:52 -27.1 Dark Up 36.2 208.2 Up 06:30:52 - 07:00:52 5958
Quincy 06:45:55 -26.8 Dark Up 36.3 207.7 Up 06:30:55 - 07:00:55 5953
Yerington 06:45:44 -28.2 Dark Up 36.5 210.0 Up 06:30:44 - 07:00:44 5945
Tonopah 06:45:34 -29.5 Dark Up 36.5 212.5 Up 06:30:34 - 07:00:34 5940
Carson City 06:45:48 -27.8 Dark Up 36.5 209.2 Up 06:30:48 - 07:00:48 5940
Hawthorne 06:45:40 -28.7 Dark Up 36.7 210.7 Up 06:30:40 - 07:00:40 5931
Gardnerville 06:45:45 -28.1 Dark Up 36.7 209.3 Up 06:30:45 - 07:00:45 5927
Indian Springs 06:45:21 -31.2 Dark Up 37.1 214.7 Up 06:30:21 - 07:00:21 5889
Lee Vining 06:45:42 -29.1 Dark Up 37.3 210.4 Up 06:30:42 - 07:00:42 5886
Beatty 06:45:28 -30.7 Dark Up 37.3 213.4 Up 06:30:28 - 07:00:28 5882
Henderson 06:45:16 -31.9 Dark Up 37.2 215.7 Up 06:30:16 - 07:00:16 5874
Bishop 06:45:36 -29.9 Dark Up 37.6 211.4 Up 06:30:36 - 07:00:36 5869
Patrick 06:45:09 -32.7 Dark Up 37.2 217.1 Up 06:30:09 - 07:00:09 5863
Kingman/Dolan Springs 06:45:12 -32.9 Dark Up 37.4 217.0 Up 06:30:12 - 07:00:12 5845
Laughlin/Bullhead City 06:45:12 -32.8 Dark Up 37.7 216.5 Up 06:30:12 - 07:00:12 5830
Mohave Valley 06:45:12 -33.1 Dark Up 37.9 216.6 Up 06:30:12 - 07:00:12 5813
George/Scottsdale 06:44:55 -34.7 Dark Up 37.5 220.0 Up 06:29:55 - 06:59:55 5805
Lake Havasu City 06:45:09 -33.5 Dark Up 38.1 217.1 Up 06:30:09 - 07:00:09 5794
Parker 06:45:08 -33.9 Dark Up 38.4 217.3 Up 06:30:08 - 07:00:08 5773
Idyllwild 06:45:17 -33.7 Dark Up 39.9 214.8 Up 06:30:17 - 07:00:17 5687
Calipatria 06:45:10 -34.6 Dark Up 39.8 216.4 Up 06:30:10 - 07:00:10 5676
Yuma 06:45:04 -35.2 Dark Up 39.7 217.6 Up 06:30:04 - 07:00:04 5671
Wildwood 06:45:28 -32.9 Dark Up 40.4 212.5 Up 06:30:28 - 07:00:28 5659

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 12DQ106, (2026/05/24 06:46UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0  1.91  41
50 Vir         13:09:45.3 -10:19:46  5.8  2.72  37
PPM 196428     13:21:12.1 -09:59:56  7.4  0.40  39
PPM 196394     13:19:36.8 -09:47:30  9.2  0.25  39
12DQ106        13:20:27.6 -09:38:50 14.9        39
Positions are for J2000

Event circumstances last updated at 2022/04/19 23:03:02 UT

Marc W. Buie, Southwest Research Institute

RECON