RECON: TNO occultation with 612533

Event between (612533) 02XV93 and star GA1240:03218199 with event index number of 2814636

Geocentric closest approach at 2026/11/11 05:52:37 UTC

J2000 position of star is 07:26:42.0 +35:32:01
Equinox of date position of star is 07:28:10.5 +35:29:15
Stellar brightness G=13.0, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 142 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=20.8

[RECON map]
TNO is 37.6 AU from the Sun and 37.1 AU from the Earth.
The TNO is moving 12.2 km/sec on the sky relative to the star, or, 1.6 arcsec/hr.
The 1-sigma error in the time of the event is 458 seconds.
The 1-sigma cross-track error in the shadow position is 3844 km.
The sky-plane scale is 26939.2 km/arcsec.

The TNO has an absolute magnitude Hv=4.9
Diameter=633.9 km assuming a 5% albedo -- 51.8 sec chord
Diameter=258.8 km assuming a 30% albedo -- 21.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 612533, (2026/11/11 05:53UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:57.6 +27:57:33  1.1  8.48 138
65 Aur         07:23:50.1 +36:42:27  5.1  1.55 143
PPM 072855     07:31:16.8 +35:06:22  8.4  0.68 142
PPM 072800     07:28:52.4 +35:26:48  9.6  0.09 142
612533         07:28:28.4 +35:28:41 13.0       142
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 2.0 sigma about the mid-time.
The median site spacing is 28.1 km RECON observability=1.0 and success probability=13.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:00:26 -50.7 Dark Down 25.8 64.7 Low 05:45:26 - 06:15:26 2649
Victoria 06:00:36 -50.9 Dark Down 23.1 61.9 Low 05:45:36 - 06:15:36 2550
Kelowna 06:00:27 -51.7 Dark Down 26.0 64.9 Low 05:45:27 - 06:15:27 2540
Peachland 06:00:26 -51.7 Dark Down 25.8 64.6 Low 05:45:26 - 06:15:26 2539
Summerland 06:00:29 -51.8 Dark Down 25.8 64.6 Low 05:45:29 - 06:15:29 2522
Penticton 06:00:28 -51.9 Dark Down 25.8 64.7 Low 05:45:28 - 06:15:28 2511
Oliver 06:00:28 -52.2 Dark Down 25.7 64.5 Low 05:45:28 - 06:15:28 2477
Anarchist Mountain Observatory 06:00:28 -52.4 Dark Down 25.7 64.6 Low 05:45:28 - 06:15:28 2453
Tonasket 06:00:31 -52.6 Dark Down 25.5 64.4 Low 05:45:31 - 06:15:31 2425
Okanogan 06:00:30 -52.8 Dark Down 25.3 64.2 Low 05:45:30 - 06:15:30 2397
Sleaford 05:59:46 -54.1 Dark Down 34.7 74.8 Up 05:44:46 - 06:14:46 2397
Brewster 06:00:31 -52.9 Dark Down 25.1 63.9 Low 05:45:31 - 06:15:31 2378
Manson/Chelan 06:00:32 -52.9 Dark Down 24.8 63.6 Low 05:45:32 - 06:15:32 2370
Wenatchee 06:00:35 -53.1 Dark Down 24.4 63.3 Low 05:45:35 - 06:15:35 2330
Ellensburg 06:00:36 -53.3 Dark Down 24.1 63.0 Low 05:45:36 - 06:15:36 2297
Yakima 06:00:35 -53.6 Dark Down 23.9 62.9 Low 05:45:35 - 06:15:35 2258
Toppenish/White Swan 06:00:37 -53.8 Dark Down 23.9 62.9 Low 05:45:37 - 06:15:37 2231
Goldendale 06:00:39 -54.0 Dark Down 23.4 62.4 Low 05:45:39 - 06:15:39 2192
The Dalles 06:00:42 -54.0 Dark Down 23.1 62.1 Low 05:45:42 - 06:15:42 2184
PNWRO 06:00:35 -54.8 Dark Down 24.7 63.6 Low 05:45:35 - 06:15:35 2140
Maupin 06:00:41 -54.3 Dark Down 23.0 62.0 Low 05:45:41 - 06:15:41 2139
Sisters 06:00:42 -54.6 Dark Down 22.3 61.4 Low 05:45:42 - 06:15:42 2072
Bend 06:00:42 -54.9 Dark Down 22.3 61.5 Low 05:45:42 - 06:15:42 2039
Oregon Observatory 06:00:42 -55.0 Dark Down 22.1 61.4 Low 05:45:42 - 06:15:42 2027
North Lake 06:00:42 -55.7 Dark Down 22.2 61.4 Low 05:45:42 - 06:15:42 1944
Chiloquin 06:00:46 -55.6 Dark Down 21.2 60.7 Low 05:45:46 - 06:15:46 1916
Klamath Falls 06:00:45 -55.8 Dark Down 21.1 60.6 Low 05:45:45 - 06:15:45 1879
Lakeview 06:00:45 -56.7 Dark Down 22.0 61.4 Low 05:45:45 - 06:15:45 1819
Fall River/Burney 06:00:49 -56.8 Dark Down 20.8 60.4 Low 05:45:49 - 06:15:49 1749
Cedarville 06:00:44 -57.2 Dark Down 21.8 61.2 Low 05:45:44 - 06:15:44 1748
Susanville 06:00:45 -57.6 Dark Down 21.0 60.6 Low 05:45:45 - 06:15:45 1658
Greenville 06:00:48 -57.6 Dark Down 20.7 60.4 Low 05:45:48 - 06:15:48 1643
Gimple 06:00:48 -57.7 Dark Down 20.7 60.4 Low 05:45:48 - 06:15:48 1639
Quincy 06:00:49 -57.7 Dark Down 20.6 60.3 Low 05:45:49 - 06:15:49 1623
Portola 06:00:46 -58.1 Dark Down 20.8 60.5 Low 05:45:46 - 06:15:46 1591
Reno 06:00:46 -58.7 Dark Down 21.1 60.7 Low 05:45:46 - 06:15:46 1539
Carson City 06:00:47 -58.9 Dark Down 21.0 60.6 Low 05:45:47 - 06:15:47 1503
Gardnerville 06:00:47 -59.1 Dark Down 20.9 60.5 Low 05:45:47 - 06:15:47 1477
Yerington 06:00:44 -59.4 Dark Down 21.3 60.8 Low 05:45:44 - 06:15:44 1459
Hawthorne 06:00:43 -60.0 Dark Down 21.4 60.9 Low 05:45:43 - 06:15:43 1392
Lee Vining 06:00:45 -60.0 Dark Down 20.8 60.5 Low 05:45:45 - 06:15:45 1356
Tonopah 06:00:40 -61.2 Dark Down 22.2 61.4 Low 05:45:40 - 06:15:40 1291
Bishop 06:00:44 -60.9 Dark Down 21.0 60.7 Low 05:45:44 - 06:15:44 1268
Beatty 06:00:39 -62.2 Dark Down 21.9 61.2 Low 05:45:39 - 06:15:39 1158
Dunrhomin 06:00:00 -65.2 Dark Down 31.4 68.0 Up 05:45:00 - 06:15:00 1129
CU-SBO 06:00:00 -65.4 Dark Down 31.2 67.8 Up 05:45:00 - 06:15:00 1106
Indian Springs 06:00:36 -63.0 Dark Down 22.5 61.6 Low 05:45:36 - 06:15:36 1085
Henderson 06:00:34 -63.8 Dark Down 22.7 61.7 Low 05:45:34 - 06:15:34 1006
Wildwood 06:00:46 -62.5 Dark Down 19.2 59.5 Really Low 05:45:46 - 06:15:46 957
Laughlin/Bullhead City 06:00:34 -64.6 Dark Down 22.6 61.5 Low 05:45:34 - 06:15:34 904
Patrick 06:00:31 -64.9 Dark Down 23.2 61.9 Low 05:45:31 - 06:15:31 902
Kingman/Dolan Springs 06:00:31 -64.9 Dark Down 23.0 61.8 Low 05:45:31 - 06:15:31 887
Mohave Valley 06:00:34 -64.8 Dark Down 22.5 61.4 Low 05:45:34 - 06:15:34 876
Idyllwild 06:00:40 -64.0 Dark Down 20.4 60.2 Low 05:45:40 - 06:15:40 845
Lake Havasu City 06:00:33 -65.2 Dark Down 22.5 61.4 Low 05:45:33 - 06:15:33 827
Parker 06:00:32 -65.4 Dark Down 22.3 61.3 Low 05:45:32 - 06:15:32 791
Calipatria 06:00:36 -65.2 Dark Down 20.9 60.4 Low 05:45:36 - 06:15:36 738
Yuma 06:00:33 -66.1 Dark Down 21.4 60.6 Low 05:45:33 - 06:15:33 661
George/Scottsdale 06:00:24 -67.2 Dark Down 23.9 62.1 Low 05:45:24 - 06:15:24 661

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 612533, (2026/11/11 05:53UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1  8.48 138
65 Aur         07:22:02.4 +36:45:38  5.1  1.55 143
PPM 072855     07:29:30.9 +35:09:49  8.4  0.68 142
PPM 072800     07:27:06.1 +35:30:09  9.6  0.09 142
612533         07:26:42.0 +35:32:01 13.0       142
Positions are for J2000

Event circumstances last updated at 2022/05/05 23:06:53 UT

Marc W. Buie, Southwest Research Institute

RECON