RECON: TNO occultation with 149349

Event between (149349) 02VA131 and star GA1080:00553234 with event index number of 1641027

Geocentric closest approach at 2026/12/22 08:46:56 UTC

J2000 position of star is 04:23:01.0 +18:39:25
Equinox of date position of star is 04:24:18.9 +18:42:27
Stellar brightness G=13.5, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 8 degrees from the moon. Moon is 95% illuminated.
TNO apparent brightness V=21.9

[RECON map]
TNO is 34.6 AU from the Sun and 33.7 AU from the Earth.
The TNO is moving 22.4 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 983 seconds.
The 1-sigma cross-track error in the shadow position is 2700 km.
The sky-plane scale is 24472.7 km/arcsec.

The TNO has an absolute magnitude Hv=6.5
Diameter=302.0 km assuming a 5% albedo -- 13.5 sec chord
Diameter=123.3 km assuming a 30% albedo -- 5.5 sec chord
Dynamical classification is 5:3EE
 
 
 
 
 
 

Star training set for 149349, (2026/12/22 08:47UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:28.3 +16:33:42  0.8  3.75  11
44Zet Per      03:55:50.1 +31:57:41  2.8 14.74   7
PPM 119867     04:26:31.6 +19:06:07  6.4  0.60   8
PPM 119815     04:23:06.3 +18:28:46  7.4  0.42   8
PPM 119829     04:24:10.5 +18:53:52 11.7  0.20   8
149349         04:24:35.1 +18:43:05 13.5         8
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 0.9 sigma about the mid-time.
The median site spacing is 29.1 km RECON observability=1.0 and success probability=21.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:44:15 -55.3 Dark Up 38.6 248.9 Up 08:29:15 - 08:59:15 540
Kamloops 08:44:46 -61.4 Dark Up 47.2 235.0 Up 08:29:46 - 08:59:46 311
Kelowna 08:44:43 -61.9 Dark Up 47.1 236.7 Up 08:29:43 - 08:59:43 236
Peachland 08:44:43 -62.1 Dark Up 47.4 236.5 Up 08:29:43 - 08:59:43 224
Summerland 08:44:43 -62.2 Dark Up 47.4 236.7 Up 08:29:43 - 08:59:43 210
Penticton 08:44:42 -62.3 Dark Up 47.4 236.9 Up 08:29:42 - 08:59:42 204
Oliver 08:44:42 -62.6 Dark Up 47.6 237.2 Up 08:29:42 - 08:59:42 170
Anarchist Mountain Observatory 08:44:41 -62.7 Dark Up 47.6 237.6 Up 08:29:41 - 08:59:41 154
Tonasket 08:44:41 -63.0 Dark Up 47.8 237.8 Up 08:29:41 - 08:59:41 123
Victoria 08:44:51 -64.1 Dark Up 50.0 233.3 Up 08:29:51 - 08:59:51 92
Okanogan 08:44:41 -63.3 Dark Up 48.0 238.0 Up 08:29:41 - 08:59:41 90
Brewster 08:44:41 -63.6 Dark Up 48.3 238.0 Up 08:29:41 - 08:59:41 62
Manson/Chelan 08:44:42 -63.9 Dark Up 48.6 237.8 Up 08:29:42 - 08:59:42 40
Wenatchee 08:44:41 -64.4 Dark Up 49.0 238.0 Up 08:29:41 - 08:59:41 -7
Ellensburg 08:44:41 -64.8 Dark Up 49.3 238.2 Up 08:29:41 - 08:59:41 -49
Yakima 08:44:41 -65.2 Dark Up 49.5 238.6 Up 08:29:41 - 08:59:41 -90
Toppenish/White Swan 08:44:40 -65.4 Dark Up 49.5 239.0 Up 08:29:40 - 08:59:40 -111
PNWRO 08:44:35 -65.2 Dark Up 48.8 241.0 Up 08:29:35 - 08:59:35 -141
Goldendale 08:44:41 -66.0 Dark Up 50.1 239.0 Up 08:29:41 - 08:59:41 -168
The Dalles 08:44:41 -66.3 Dark Up 50.4 238.9 Up 08:29:41 - 08:59:41 -192
Maupin 08:44:41 -66.7 Dark Up 50.6 239.4 Up 08:29:41 - 08:59:41 -234
Sisters 08:44:41 -67.6 Dark Up 51.3 239.8 Up 08:29:41 - 08:59:41 -325
Bend 08:44:40 -67.7 Dark Up 51.3 240.3 Up 08:29:40 - 08:59:40 -348
Oregon Observatory 08:44:40 -67.9 Dark Up 51.4 240.4 Up 08:29:40 - 08:59:40 -366
North Lake 08:44:38 -68.3 Dark Up 51.4 241.7 Up 08:29:38 - 08:59:38 -429
Chiloquin 08:44:40 -69.3 Dark Up 52.3 241.4 Up 08:29:40 - 08:59:40 -503
Lakeview 08:44:35 -69.1 Dark Up 51.5 243.5 Up 08:29:35 - 08:59:35 -536
Klamath Falls 08:44:39 -69.5 Dark Up 52.5 241.8 Up 08:29:39 - 08:59:39 -538
Cedarville 08:44:33 -69.6 Dark Up 51.7 244.4 Up 08:29:33 - 08:59:33 -603
Dunrhomin 08:43:49 -62.3 Dark Up 41.5 259.1 Up 08:28:49 - 08:58:49 -612
CU-SBO 08:43:49 -62.5 Dark Up 41.6 259.3 Up 08:28:49 - 08:58:49 -639
Fall River/Burney 08:44:37 -70.5 Dark Up 52.7 243.6 Up 08:29:37 - 08:59:37 -659
Susanville 08:44:34 -70.7 Dark Up 52.5 245.2 Up 08:29:34 - 08:59:34 -721
Gimple 08:44:34 -71.0 Dark Up 52.8 245.3 Up 08:29:34 - 08:59:34 -751
Greenville 08:44:34 -71.1 Dark Up 52.8 245.2 Up 08:29:34 - 08:59:34 -751
Quincy 08:44:34 -71.2 Dark Up 52.9 245.4 Up 08:29:34 - 08:59:34 -772
Portola 08:44:32 -71.2 Dark Up 52.6 246.1 Up 08:29:32 - 08:59:32 -784
Reno 08:44:30 -71.1 Dark Up 52.3 247.1 Up 08:29:30 - 08:59:30 -808
Carson City 08:44:29 -71.4 Dark Up 52.4 247.5 Up 08:29:29 - 08:59:29 -846
Yerington 08:44:27 -71.3 Dark Up 52.0 248.4 Up 08:29:27 - 08:59:27 -863
Gardnerville 08:44:29 -71.6 Dark Up 52.5 247.9 Up 08:29:29 - 08:59:29 -872
Hawthorne 08:44:25 -71.4 Dark Up 51.8 249.4 Up 08:29:25 - 08:59:25 -910
Tonopah 08:44:20 -71.0 Dark Up 51.0 251.3 Up 08:29:20 - 08:59:20 -951
Lee Vining 08:44:26 -72.0 Dark Up 52.4 249.6 Up 08:29:26 - 08:59:26 -972
Bishop 08:44:23 -72.1 Dark Up 52.1 251.1 Up 08:29:23 - 08:59:23 -1031
Beatty 08:44:18 -71.5 Dark Up 51.0 253.1 Up 08:29:18 - 08:59:18 -1070
Indian Springs 08:44:14 -71.1 Dark Up 50.2 254.4 Up 08:29:14 - 08:59:14 -1098
Henderson 08:44:11 -71.0 Dark Up 49.8 255.6 Up 08:29:11 - 08:59:11 -1150
Patrick 08:44:07 -70.6 Dark Up 49.1 257.2 Up 08:29:07 - 08:59:07 -1208
Kingman/Dolan Springs 08:44:07 -70.9 Dark Up 49.3 257.3 Up 08:29:07 - 08:59:07 -1233
Laughlin/Bullhead City 08:44:09 -71.3 Dark Up 49.7 256.9 Up 08:29:09 - 08:59:09 -1240
Mohave Valley 08:44:08 -71.4 Dark Up 49.8 257.2 Up 08:29:08 - 08:59:08 -1269
Lake Havasu City 08:44:07 -71.5 Dark Up 49.7 257.9 Up 08:29:07 - 08:59:07 -1310
Parker 08:44:07 -71.6 Dark Up 49.7 258.3 Up 08:29:07 - 08:59:07 -1347
George/Scottsdale 08:43:59 -70.1 Dark Up 47.9 260.5 Up 08:28:59 - 08:58:59 -1372
Wildwood 08:44:20 -74.5 Dark Up 53.2 255.0 Up 08:29:20 - 08:59:20 -1382
Idyllwild 08:44:14 -73.5 Dark Up 51.8 256.9 Up 08:29:14 - 08:59:14 -1409
Calipatria 08:44:10 -73.0 Dark Up 50.9 258.6 Up 08:29:10 - 08:59:10 -1466
Yuma 08:44:06 -72.6 Dark Up 50.3 259.8 Up 08:29:06 - 08:59:06 -1506

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 149349, (2026/12/22 08:47UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  3.75  11
44Zet Per      03:54:07.9 +31:53:01  2.8 14.74   7
PPM 119867     04:24:57.3 +19:02:31  6.4  0.60   8
PPM 119815     04:21:32.4 +18:25:03  7.4  0.42   8
PPM 119829     04:22:36.3 +18:50:11 11.7  0.20   8
149349         04:23:01.0 +18:39:25 13.5         8
Positions are for J2000

Event circumstances last updated at 2022/04/26 23:00:58 UT

Marc W. Buie, Southwest Research Institute

RECON