RECON: TNO occultation with 386968

Event between (386968) 12BR61 and star GA0640:14440113 with event index number of 2212857

Geocentric closest approach at 2025/05/13 06:46:13 UTC

J2000 position of star is 17:23:03.2 -24:57:03
Equinox of date position of star is 17:24:32.4 -24:58:20
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 23 degrees from the moon. Moon is 100% illuminated.
Apparent brightness V=21.2

[RECON map]
Object is 15.4 AU from the Sun and 14.5 AU from the Earth.
Apparent velocity is 17.7 km/sec on the sky relative to the star, or, 6.0 arcsec/hr.
The 1-sigma error in the time of the event is 45 seconds.
The 1-sigma cross-track error in the shadow position is 530 km.
The sky-plane scale is 10544.8 km/arcsec.

The object has an absolute magnitude Hv=9.3
Diameter=82.8 km assuming a 5% albedo -- 4.7 sec chord
Diameter=33.8 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 386968, (2025/05/13 06:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:58.0 -26:29:10  0.9 12.17  11
35Eta Oph      17:11:50.1 -15:45:16  2.6  9.69  22
PPM 266746     17:23:15.1 -24:55:46  6.5  0.31  22
PPM 266794     17:24:43.4 -25:07:11  7.6  0.15  23
PPM 266793     17:24:43.2 -25:01:45 10.0  0.06  23
386968         17:24:36.8 -24:58:23 16.8        23
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=0.0 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)
Sleaford 06:48:03 -19.4 Dark Up 7.6 149.8 Really Low 06:43:46 - 06:52:20 7210
Kamloops 06:49:10 -19.2 Dark Up 3.5 137.9 Really Low 06:44:53 - 06:53:27 6855
Kelowna 06:49:11 -20.2 Dark Up 4.5 138.6 Really Low 06:44:54 - 06:53:28 6842
Peachland 06:49:12 -20.2 Dark Up 4.5 138.4 Really Low 06:44:55 - 06:53:29 6831
Summerland 06:49:12 -20.4 Dark Up 4.6 138.4 Really Low 06:44:55 - 06:53:29 6827
Penticton 06:49:12 -20.5 Dark Up 4.7 138.5 Really Low 06:44:55 - 06:53:29 6826
Oliver 06:49:13 -20.8 Dark Up 5.0 138.5 Really Low 06:44:56 - 06:53:30 6811
Anarchist Mountain Observatory 06:49:13 -21.0 Dark Up 5.2 138.6 Really Low 06:44:56 - 06:53:30 6809
Okanogan 06:49:16 -21.6 Dark Up 5.6 138.4 Really Low 06:44:59 - 06:53:33 6775
Brewster 06:49:17 -21.8 Dark Up 5.7 138.3 Really Low 06:45:00 - 06:53:34 6758
Manson/Chelan 06:49:19 -21.9 Dark Up 5.7 138.0 Really Low 06:45:02 - 06:53:36 6740
Dunrhomin 06:48:49 -31.3 Dark Up 18.1 149.2 Really Low 06:44:32 - 06:53:06 6715
Wenatchee 06:49:21 -22.4 Dark Up 6.0 137.8 Really Low 06:45:04 - 06:53:38 6714
Nikitin 06:48:50 -31.4 Dark Up 18.3 149.2 Really Low 06:44:33 - 06:53:07 6705
CU-SBO 06:48:50 -31.5 Dark Up 18.3 149.1 Really Low 06:44:33 - 06:53:07 6700
Ellensburg 06:49:23 -22.7 Dark Up 6.2 137.6 Really Low 06:45:06 - 06:53:40 6689
Victoria 06:49:25 -20.6 Dark Up 3.8 135.4 Really Low 06:45:08 - 06:53:42 6688
PNWRO 06:49:21 -24.0 Dark Up 7.7 138.8 Really Low 06:45:04 - 06:53:38 6683
Yakima 06:49:24 -23.1 Dark Up 6.5 137.6 Really Low 06:45:07 - 06:53:41 6669
Toppenish/White Swan 06:49:24 -23.3 Dark Up 6.7 137.7 Really Low 06:45:07 - 06:53:41 6663
The Dalles 06:49:29 -23.9 Dark Up 6.9 137.0 Really Low 06:45:12 - 06:53:46 6605
Maupin 06:49:30 -24.3 Dark Up 7.3 137.1 Really Low 06:45:13 - 06:53:47 6587
Sisters 06:49:34 -25.1 Dark Up 7.7 136.6 Really Low 06:45:17 - 06:53:51 6529
Bend 06:49:34 -25.3 Dark Up 8.0 136.8 Really Low 06:45:17 - 06:53:51 6524
Oregon Observatory 06:49:35 -25.5 Dark Up 8.1 136.7 Really Low 06:45:18 - 06:53:52 6512
Chiloquin 06:49:41 -26.6 Dark Up 8.8 136.2 Really Low 06:45:24 - 06:53:58 6430
Cedarville 06:49:39 -28.0 Dark Up 10.4 137.4 Really Low 06:45:22 - 06:53:56 6419
Klamath Falls 06:49:41 -27.0 Dark Up 9.1 136.3 Really Low 06:45:24 - 06:53:58 6413
Fall River/Burney 06:49:44 -28.2 Dark Up 10.2 136.4 Really Low 06:45:27 - 06:54:01 6358
Gimple 06:49:45 -29.2 Dark Up 11.1 136.7 Really Low 06:45:28 - 06:54:02 6320
Greenville 06:49:45 -29.1 Dark Up 11.1 136.7 Really Low 06:45:28 - 06:54:02 6318
Reno 06:49:43 -30.0 Dark Up 12.1 137.4 Really Low 06:45:26 - 06:54:00 6316
Portola 06:49:45 -29.6 Dark Up 11.6 137.0 Really Low 06:45:28 - 06:54:02 6313
Quincy 06:49:46 -29.3 Dark Up 11.2 136.6 Really Low 06:45:29 - 06:54:03 6307
Yerington 06:49:43 -30.7 Dark Up 12.8 137.8 Really Low 06:45:26 - 06:54:00 6301
Carson City 06:49:44 -30.3 Dark Up 12.4 137.4 Really Low 06:45:27 - 06:54:01 6295
Hawthorne 06:49:42 -31.2 Dark Up 13.5 138.2 Really Low 06:45:25 - 06:53:59 6289
Gardnerville 06:49:45 -30.6 Dark Up 12.6 137.4 Really Low 06:45:28 - 06:54:02 6282
Beatty 06:49:40 -33.2 Dark Up 15.7 139.3 Really Low 06:45:23 - 06:53:57 6242
Lee Vining 06:49:45 -31.7 Dark Up 13.6 137.7 Really Low 06:45:28 - 06:54:02 6241
Patrick 06:49:33 -35.2 Dark Up 18.3 141.3 Really Low 06:45:16 - 06:53:50 6228
Bishop 06:49:45 -32.4 Dark Up 14.5 138.2 Really Low 06:45:28 - 06:54:02 6225
Laughlin/Bullhead City 06:49:36 -35.3 Dark Up 18.1 140.7 Really Low 06:45:19 - 06:53:53 6193
George/Scottsdale 06:49:29 -37.2 Dark Up 20.6 142.5 Low 06:45:12 - 06:53:46 6174
Lake Havasu City 06:49:37 -36.0 Dark Up 18.8 140.7 Really Low 06:45:20 - 06:53:54 6158
Idyllwild 06:49:48 -36.3 Dark Up 18.1 138.7 Really Low 06:45:31 - 06:54:05 6042
Calipatria 06:49:44 -37.1 Dark Up 19.2 139.5 Really Low 06:45:27 - 06:54:01 6035
Yuma 06:49:42 -37.7 Dark Up 20.0 140.1 Really Low 06:45:25 - 06:53:59 6031
Wildwood 06:49:53 -35.5 Dark Up 16.8 137.4 Really Low 06:45:36 - 06:54:10 6011

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, (2025/05/13 06:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 12.17  11
35Eta Oph      17:10:22.7 -15:43:29  2.6  9.69  22
PPM 266746     17:21:41.5 -24:54:23  6.5  0.31  22
PPM 266794     17:23:09.7 -25:05:51  7.6  0.15  23
PPM 266793     17:23:09.6 -25:00:26 10.0  0.06  23
386968         17:23:03.2 -24:57:03 16.8        23
Positions are for J2000

Event circumstances last updated at 2024/03/04 05:32:21 UT

Marc W. Buie, Southwest Research Institute

RECON