RECON: TNO occultation with 386968

Event between (386968) 12BR61 and star GA0640:12895269 with event index number of 2212937

Geocentric closest approach at 2025/06/14 09:14:21 UTC

J2000 position of star is 17:16:29.8 -24:52:27
Equinox of date position of star is 17:17:58.9 -24:53:57
Stellar brightness G=15.0, 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 91% illuminated.
Apparent brightness V=21.1

[RECON map]
Object is 15.5 AU from the Sun and 14.5 AU from the Earth.
Apparent velocity is 21.3 km/sec on the sky relative to the star, or, 7.3 arcsec/hr.
The 1-sigma error in the time of the event is 37 seconds.
The 1-sigma cross-track error in the shadow position is 533 km.
The sky-plane scale is 10498.0 km/arcsec.

The object has an absolute magnitude Hv=9.3
Diameter=82.8 km assuming a 5% albedo -- 3.9 sec chord
Diameter=33.8 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 386968, (2025/06/14 09:15UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:58.3 -26:29:10  0.9 10.72  49
35Eta Oph      17:11:50.4 -15:45:17  2.6  9.26  43
PPM 266746     17:23:15.4 -24:55:46  6.5  1.18  38
PPM 266644     17:18:44.0 -24:50:24  8.5  0.16  39
PPM 266630     17:17:57.5 -25:00:28  9.1  0.11  39
386968         17:18:03.6 -24:54:01 15.0        39
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 0.0 km RECON observability=0.5 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 09:13:31 -14.4 AT Up 12.0 200.2 Really Low 09:09:58 - 09:17:04 4058
Kelowna 09:13:27 -15.0 AT Up 12.6 201.0 Really Low 09:09:54 - 09:17:00 4028
Peachland 09:13:28 -15.1 AT Up 12.8 200.8 Really Low 09:09:55 - 09:17:01 4027
Summerland 09:13:28 -15.3 AT Up 12.9 200.9 Really Low 09:09:55 - 09:17:01 4022
Penticton 09:13:27 -15.3 AT Up 12.9 201.0 Really Low 09:09:54 - 09:17:00 4019
Victoria 09:13:38 -17.0 AT Up 14.7 197.6 Really Low 09:10:05 - 09:17:11 4010
Oliver 09:13:27 -15.6 AT Up 13.2 201.0 Really Low 09:09:54 - 09:17:00 4008
Anarchist Mountain Observatory 09:13:26 -15.8 AT Up 13.4 201.2 Really Low 09:09:53 - 09:16:59 4002
Okanogan 09:13:25 -16.4 AT Up 14.0 201.0 Really Low 09:09:52 - 09:16:58 3983
Brewster 09:13:26 -16.7 AT Up 14.3 200.9 Really Low 09:09:53 - 09:16:59 3975
Manson/Chelan 09:13:27 -17.0 AT Up 14.6 200.6 Really Low 09:09:54 - 09:17:00 3971
Sleaford 09:12:53 -9.5 NT Up 6.8 212.6 Really Low 09:09:20 - 09:16:26 3957
Wenatchee 09:13:26 -17.5 AT Up 15.1 200.5 Really Low 09:09:53 - 09:16:59 3956
Ellensburg 09:13:26 -17.9 AT Up 15.5 200.3 Really Low 09:09:53 - 09:16:59 3943
Yakima 09:13:26 -18.3 Dark Up 15.9 200.3 Really Low 09:09:53 - 09:16:59 3929
Toppenish/White Swan 09:13:25 -18.5 Dark Up 16.1 200.5 Really Low 09:09:52 - 09:16:58 3920
The Dalles 09:13:27 -19.4 Dark Up 17.0 199.8 Really Low 09:09:54 - 09:17:00 3897
PNWRO 09:13:19 -18.5 Dark Up 16.0 201.9 Really Low 09:09:46 - 09:16:52 3896
Maupin 09:13:26 -19.8 Dark Up 17.4 200.0 Really Low 09:09:53 - 09:16:59 3881
Sisters 09:13:26 -20.7 Dark Up 18.3 199.6 Really Low 09:09:53 - 09:16:59 3850
Bend 09:13:25 -20.9 Dark Up 18.5 199.9 Really Low 09:09:52 - 09:16:58 3839
Oregon Observatory 09:13:25 -21.1 Dark Up 18.7 199.8 Really Low 09:09:52 - 09:16:58 3833
Chiloquin 09:13:25 -22.4 Dark Up 20.0 199.6 Low 09:09:52 - 09:16:58 3781
Klamath Falls 09:13:24 -22.7 Dark Up 20.3 199.7 Low 09:09:51 - 09:16:57 3766
Cedarville 09:13:17 -23.1 Dark Up 20.6 201.2 Low 09:09:44 - 09:16:50 3724
Fall River/Burney 09:13:21 -23.8 Dark Up 21.3 200.2 Low 09:09:48 - 09:16:54 3711
Greenville 09:13:18 -24.6 Dark Up 22.1 200.7 Low 09:09:45 - 09:16:51 3666
Gimple 09:13:18 -24.5 Dark Up 22.0 200.8 Low 09:09:45 - 09:16:51 3666
Quincy 09:13:18 -24.8 Dark Up 22.2 200.7 Low 09:09:45 - 09:16:51 3657
Portola 09:13:16 -24.8 Dark Up 22.2 201.2 Low 09:09:43 - 09:16:49 3648
Reno 09:13:14 -24.9 Dark Up 22.3 201.8 Low 09:09:41 - 09:16:47 3630
Carson City 09:13:13 -25.2 Dark Up 22.6 201.9 Low 09:09:40 - 09:16:46 3612
Gardnerville 09:13:12 -25.4 Dark Up 22.8 202.0 Low 09:09:39 - 09:16:45 3600
Yerington 09:13:10 -25.2 Dark Up 22.6 202.5 Low 09:09:37 - 09:16:43 3597
Hawthorne 09:13:07 -25.5 Dark Up 22.9 203.1 Low 09:09:34 - 09:16:40 3570
Lee Vining 09:13:08 -26.2 Dark Up 23.6 202.7 Low 09:09:35 - 09:16:41 3546
Bishop 09:13:05 -26.6 Dark Up 23.9 203.5 Low 09:09:32 - 09:16:38 3508
Dunrhomin 09:12:23 -19.5 Dark Up 16.4 214.5 Really Low 09:08:50 - 09:15:56 3485
Nikitin 09:12:23 -19.6 Dark Up 16.6 214.5 Really Low 09:08:50 - 09:15:56 3476
CU-SBO 09:12:23 -19.7 Dark Up 16.7 214.4 Really Low 09:08:50 - 09:15:56 3474
Beatty 09:12:58 -26.5 Dark Up 23.8 205.1 Low 09:09:25 - 09:16:31 3468
Patrick 09:12:45 -27.0 Dark Up 24.1 207.9 Low 09:09:12 - 09:16:18 3355
Laughlin/Bullhead City 09:12:47 -27.4 Dark Up 24.6 207.4 Low 09:09:14 - 09:16:20 3349
Wildwood 09:13:01 -29.7 Dark Up 27.0 203.9 Low 09:09:28 - 09:16:34 3331
Lake Havasu City 09:12:45 -28.0 Dark Up 25.1 207.7 Low 09:09:12 - 09:16:18 3308
Idyllwild 09:12:54 -29.4 Dark Up 26.6 205.7 Low 09:09:21 - 09:16:27 3292
Calipatria 09:12:48 -29.6 Dark Up 26.8 206.9 Low 09:09:15 - 09:16:21 3242
George/Scottsdale 09:12:35 -27.8 Dark Up 24.8 210.1 Low 09:09:02 - 09:16:08 3231
Yuma 09:12:44 -29.7 Dark Up 26.8 207.8 Low 09:09:11 - 09:16:17 3206

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 386968, (2025/06/14 09:15UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 10.72  49
35Eta Oph      17:10:22.7 -15:43:29  2.6  9.26  43
PPM 266746     17:21:41.5 -24:54:23  6.5  1.18  38
PPM 266644     17:17:10.3 -24:48:51  8.5  0.16  39
PPM 266630     17:16:23.6 -24:58:53  9.1  0.11  39
386968         17:16:29.8 -24:52:27 15.0        39
Positions are for J2000

Event circumstances last updated at 2024/03/04 05:35:33 UT

Marc W. Buie, Southwest Research Institute

RECON