RECON: TNO occultation with 133067

Event between (133067) 03FB128 and star GA0740:06102610 with event index number of 1382930

Geocentric closest approach at 2025/06/09 04:40:09 UTC

J2000 position of star is 16:32:16.7 -15:59:52
Equinox of date position of star is 16:33:40.6 -16:02:53
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 17 degrees from the moon. Moon is 96% illuminated.
Apparent brightness V=23.0

[RECON map]
Object is 37.8 AU from the Sun and 36.8 AU from the Earth.
Apparent velocity is 24.2 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 126 seconds.
The 1-sigma cross-track error in the shadow position is 1495 km.
The sky-plane scale is 26664.7 km/arcsec.

The object has an absolute magnitude Hv=7.2
Diameter=251.2 km assuming a 5% albedo -- 9.0 sec chord
Diameter=102.6 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 133067, (2025/06/09 04:40UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:58.3 -26:29:10  0.9 10.46  15
13Zet Oph      16:38:33.7 -10:37:00  2.6  5.56  21
8Phi Oph       16:32:36.0 -16:39:58  4.0  0.67  17
PPM 231822     16:34:05.4 -16:02:26  7.5  0.09  17
133067         16:33:44.0 -16:03:00 16.6        18
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 5.0 sigma about the mid-time.
The median site spacing is 18.8 km RECON observability=0.2 and success probability=25.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:41:56 -8.9 NT Up 18.4 154.0 Really Low 04:30:55 - 04:52:58 1747
Kamloops 04:42:31 -4.4 CT Up 14.7 140.3 Really Low 04:31:30 - 04:53:33 1397
Kelowna 04:42:31 -5.4 CT Up 15.7 141.0 Really Low 04:31:30 - 04:53:33 1369
Peachland 04:42:32 -5.3 CT Up 15.6 140.7 Really Low 04:31:30 - 04:53:33 1356
Summerland 04:42:32 -5.5 CT Up 15.8 140.7 Really Low 04:31:30 - 04:53:33 1349
Penticton 04:42:32 -5.6 CT Up 15.9 140.8 Really Low 04:31:30 - 04:53:33 1348
Oliver 04:42:32 -5.8 CT Up 16.2 140.8 Really Low 04:31:31 - 04:53:34 1327
Anarchist Mountain Observatory 04:42:32 -6.1 NT Up 16.4 140.9 Really Low 04:31:31 - 04:53:34 1321
Okanogan 04:42:34 -6.4 NT Up 16.8 140.6 Really Low 04:31:32 - 04:53:35 1277
Brewster 04:42:35 -6.5 NT Up 16.9 140.4 Really Low 04:31:34 - 04:53:37 1257
Manson/Chelan 04:42:36 -6.5 NT Up 16.9 140.0 Really Low 04:31:35 - 04:53:38 1236
Victoria 04:42:42 -4.5 CT Up 15.0 137.3 Really Low 04:31:41 - 04:53:44 1204
Wenatchee 04:42:37 -6.8 NT Up 17.2 139.8 Really Low 04:31:36 - 04:53:39 1203
Ellensburg 04:42:39 -7.0 NT Up 17.4 139.5 Really Low 04:31:37 - 04:53:40 1172
Yakima 04:42:39 -7.2 NT Up 17.7 139.4 Really Low 04:31:38 - 04:53:41 1146
PNWRO 04:42:37 -8.5 NT Up 18.9 140.8 Really Low 04:31:35 - 04:53:38 1146
Toppenish/White Swan 04:42:39 -7.5 NT Up 18.0 139.5 Really Low 04:31:38 - 04:53:41 1136
Dunrhomin 04:42:07 -19.1 Dark Up 29.2 152.4 Low 04:31:05 - 04:53:08 1071
The Dalles 04:42:43 -7.6 NT Up 18.2 138.6 Really Low 04:31:41 - 04:53:44 1068
Nikitin 04:42:07 -19.3 Dark Up 29.3 152.3 Low 04:31:05 - 04:53:08 1058
CU-SBO 04:42:07 -19.3 Dark Up 29.4 152.2 Low 04:31:06 - 04:53:09 1052
Maupin 04:42:43 -8.0 NT Up 18.6 138.6 Really Low 04:31:42 - 04:53:45 1043
Sisters 04:42:46 -8.3 NT Up 19.0 138.0 Really Low 04:31:44 - 04:53:47 974
Bend 04:42:46 -8.6 NT Up 19.3 138.2 Really Low 04:31:44 - 04:53:47 964
Oregon Observatory 04:42:46 -8.7 NT Up 19.4 138.0 Really Low 04:31:45 - 04:53:48 949
Chiloquin 04:42:49 -9.4 NT Up 20.2 137.4 Low 04:31:48 - 04:53:51 848
Klamath Falls 04:42:50 -9.7 NT Up 20.4 137.3 Low 04:31:48 - 04:53:51 826
Cedarville 04:42:47 -11.0 NT Up 21.8 138.6 Low 04:31:45 - 04:53:48 816
Fall River/Burney 04:42:51 -10.7 NT Up 21.5 137.4 Low 04:31:49 - 04:53:52 752
Gimple 04:42:51 -11.6 NT Up 22.4 137.6 Low 04:31:49 - 04:53:52 699
Greenville 04:42:51 -11.6 NT Up 22.4 137.5 Low 04:31:49 - 04:53:52 697
Portola 04:42:50 -12.1 AT Up 22.9 137.9 Low 04:31:49 - 04:53:52 686
Quincy 04:42:51 -11.7 NT Up 22.6 137.5 Low 04:31:50 - 04:53:53 683
Reno 04:42:49 -12.6 AT Up 23.4 138.4 Low 04:31:47 - 04:53:50 682
Yerington 04:42:48 -13.4 AT Up 24.2 138.8 Low 04:31:46 - 04:53:49 658
Carson City 04:42:49 -12.9 AT Up 23.7 138.3 Low 04:31:48 - 04:53:51 656
Gardnerville 04:42:50 -13.1 AT Up 23.9 138.2 Low 04:31:48 - 04:53:51 640
Hawthorne 04:42:47 -14.0 AT Up 24.8 139.1 Low 04:31:46 - 04:53:49 637
Lee Vining 04:42:49 -14.1 AT Up 25.0 138.5 Low 04:31:48 - 04:53:51 583
Beatty 04:42:44 -16.2 AT Up 27.0 140.3 Low 04:31:43 - 04:53:46 562
Bishop 04:42:48 -14.9 AT Up 25.8 139.0 Low 04:31:47 - 04:53:50 556
Patrick 04:42:37 -18.8 Dark Up 29.6 142.4 Low 04:31:36 - 04:53:39 521
Laughlin/Bullhead City 04:42:40 -18.6 Dark Up 29.4 141.7 Low 04:31:38 - 04:53:41 484
George/Scottsdale 04:42:33 -21.2 Dark Up 31.9 143.7 Up 04:31:31 - 04:53:34 439
Lake Havasu City 04:42:40 -19.3 Dark Up 30.1 141.7 Up 04:31:38 - 04:53:41 438
Idyllwild 04:42:47 -18.5 Dark Up 29.4 139.2 Low 04:31:46 - 04:53:49 317
Calipatria 04:42:45 -19.6 Dark Up 30.5 140.1 Up 04:31:43 - 04:53:46 299
Wildwood 04:42:53 -17.1 AT Up 28.1 137.7 Low 04:31:51 - 04:53:54 296
Yuma 04:42:42 -20.4 Dark Up 31.3 140.7 Up 04:31:41 - 04:53:44 287

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 133067, (2025/06/09 04:40UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 10.46  15
13Zet Oph      16:37:09.6 -10:34:01  2.6  5.56  21
8Phi Oph       16:31:08.3 -16:36:47  4.0  0.67  17
PPM 231822     16:32:38.1 -15:59:18  7.5  0.09  17
133067         16:32:16.7 -15:59:52 16.6        17
Positions are for J2000

Event circumstances last updated at 2024/06/09 02:45:56 UT

Marc W. Buie, Southwest Research Institute

RECON