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 05:55:05 UTC

J2000 position of star is 07:26:42.0 +35:32:01
Equinox of date position of star is 07:28:17.7 +35:29:01
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.
Apparent brightness V=20.7

[RECON map]
Object is 37.6 AU from the Sun and 37.1 AU from the Earth.
Apparent velocity is 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 292 seconds.
The 1-sigma cross-track error in the shadow position is 2851 km.
The sky-plane scale is 26939.1 km/arcsec.

The object has an absolute magnitude Hv=4.8
Diameter=633.9 km assuming a 5% albedo -- 53.5 sec chord
Diameter=258.8 km assuming a 30% albedo -- 21.8 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 3.1 sigma about the mid-time.
The median site spacing is 32.7 km RECON observability=1.0 and success probability=22.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:02:52 -51.0 Dark Down 26.2 65.1 Low 05:47:52 - 06:17:52 1139
Victoria 06:03:01 -51.2 Dark Down 23.5 62.3 Low 05:48:01 - 06:18:01 1037
Kelowna 06:02:51 -52.0 Dark Down 26.4 65.3 Low 05:47:51 - 06:17:51 1029
Peachland 06:02:52 -51.9 Dark Down 26.1 65.0 Low 05:47:52 - 06:17:52 1028
Summerland 06:02:52 -52.1 Dark Down 26.1 65.0 Low 05:47:52 - 06:17:52 1011
Penticton 06:02:51 -52.2 Dark Down 26.2 65.1 Low 05:47:51 - 06:17:51 1000
Oliver 06:02:53 -52.4 Dark Down 26.0 64.9 Low 05:47:53 - 06:17:53 966
Anarchist Mountain Observatory 06:02:52 -52.6 Dark Down 26.1 64.9 Low 05:47:52 - 06:17:52 942
Sleaford 06:02:11 -54.2 Dark Down 35.0 75.2 Up 05:47:11 - 06:17:11 894
Okanogan 06:02:54 -53.0 Dark Down 25.7 64.5 Low 05:47:54 - 06:17:54 886
Brewster 06:02:56 -53.2 Dark Down 25.4 64.3 Low 05:47:56 - 06:17:56 866
Manson/Chelan 06:02:57 -53.1 Dark Down 25.1 64.0 Low 05:47:57 - 06:17:57 858
Wenatchee 06:02:58 -53.4 Dark Down 24.8 63.7 Low 05:47:58 - 06:17:58 818
Ellensburg 06:03:00 -53.6 Dark Down 24.5 63.4 Low 05:48:00 - 06:18:00 785
Yakima 06:03:01 -53.9 Dark Down 24.3 63.2 Low 05:48:01 - 06:18:01 746
Toppenish/White Swan 06:03:01 -54.1 Dark Down 24.3 63.2 Low 05:48:01 - 06:18:01 718
The Dalles 06:03:03 -54.3 Dark Down 23.5 62.5 Low 05:48:03 - 06:18:03 671
PNWRO 06:02:57 -55.1 Dark Down 25.1 63.9 Low 05:47:57 - 06:17:57 629
Maupin 06:03:04 -54.6 Dark Down 23.4 62.4 Low 05:48:04 - 06:18:04 626
Sisters 06:03:07 -55.0 Dark Down 22.6 61.8 Low 05:48:07 - 06:18:07 558
Bend 06:03:07 -55.3 Dark Down 22.7 61.8 Low 05:48:07 - 06:18:07 525
Oregon Observatory 06:03:07 -55.3 Dark Down 22.5 61.7 Low 05:48:07 - 06:18:07 513
Chiloquin 06:03:10 -55.9 Dark Down 21.6 61.0 Low 05:48:10 - 06:18:10 401
Klamath Falls 06:03:11 -56.2 Dark Down 21.5 60.9 Low 05:48:11 - 06:18:11 365
Fall River/Burney 06:03:11 -57.1 Dark Down 21.2 60.7 Low 05:48:11 - 06:18:11 234
Cedarville 06:03:08 -57.5 Dark Down 22.2 61.5 Low 05:48:08 - 06:18:08 233
Greenville 06:03:11 -58.0 Dark Down 21.0 60.7 Low 05:48:11 - 06:18:11 128
Gimple 06:03:11 -58.0 Dark Down 21.1 60.7 Low 05:48:11 - 06:18:11 124
Quincy 06:03:11 -58.1 Dark Down 21.0 60.6 Low 05:48:11 - 06:18:11 108
Portola 06:03:10 -58.5 Dark Down 21.2 60.8 Low 05:48:10 - 06:18:10 76
Reno 06:03:09 -59.0 Dark Down 21.5 61.0 Low 05:48:09 - 06:18:09 24
Carson City 06:03:09 -59.3 Dark Down 21.4 60.9 Low 05:48:09 - 06:18:09 -12
Gardnerville 06:03:09 -59.4 Dark Down 21.3 60.8 Low 05:48:09 - 06:18:09 -37
Yerington 06:03:08 -59.8 Dark Down 21.7 61.1 Low 05:48:08 - 06:18:08 -56
Hawthorne 06:03:07 -60.4 Dark Down 21.8 61.2 Low 05:48:07 - 06:18:07 -122
Lee Vining 06:03:08 -60.4 Dark Down 21.2 60.8 Low 05:48:08 - 06:18:08 -159
Bishop 06:03:07 -61.2 Dark Down 21.4 60.9 Low 05:48:07 - 06:18:07 -246
Beatty 06:03:02 -62.5 Dark Down 22.3 61.5 Low 05:48:02 - 06:18:02 -355
Dunrhomin 06:02:23 -65.4 Dark Down 31.8 68.2 Up 05:47:23 - 06:17:23 -376
Nikitin 06:02:23 -65.6 Dark Down 31.8 68.1 Up 05:47:23 - 06:17:23 -395
CU-SBO 06:02:24 -65.6 Dark Down 31.7 68.1 Up 05:47:24 - 06:17:24 -400
Wildwood 06:03:08 -63.0 Dark Down 19.7 59.8 Really Low 05:48:08 - 06:18:08 -558
Laughlin/Bullhead City 06:02:57 -65.0 Dark Down 23.0 61.8 Low 05:47:57 - 06:17:57 -609
Patrick 06:02:54 -65.3 Dark Down 23.7 62.2 Low 05:47:54 - 06:17:54 -610
Idyllwild 06:03:02 -64.5 Dark Down 20.8 60.4 Low 05:48:02 - 06:18:02 -670
Lake Havasu City 06:02:55 -65.6 Dark Down 22.9 61.6 Low 05:47:55 - 06:17:55 -685
Calipatria 06:02:59 -65.6 Dark Down 21.4 60.7 Low 05:47:59 - 06:17:59 -776
George/Scottsdale 06:02:48 -67.6 Dark Down 24.3 62.3 Low 05:47:48 - 06:17:48 -851
Yuma 06:02:57 -66.5 Dark Down 21.8 60.9 Low 05:47:57 - 06:17:57 -853

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 2024/03/05 04:52:15 UT

Marc W. Buie, Southwest Research Institute

RECON