RECON: TNO occultation with 386968

Event between (386968) 12BR61 and star GA0640:21076073 with event index number of 2213648

Geocentric closest approach at 2026/04/30 11:46:14 UTC

J2000 position of star is 17:52:14.2 -25:17:29
Equinox of date position of star is 17:53:43.8 -25:17:44
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 62 degrees from the moon. Moon is 98% illuminated.
Apparent brightness V=21.5

[RECON map]
Object is 16.1 AU from the Sun and 15.4 AU from the Earth.
Apparent velocity is 11.8 km/sec on the sky relative to the star, or, 3.8 arcsec/hr.
The 1-sigma error in the time of the event is 82 seconds.
The 1-sigma cross-track error in the shadow position is 578 km.
The sky-plane scale is 11173.6 km/arcsec.

The object has an absolute magnitude Hv=9.3
Diameter=82.8 km assuming a 5% albedo -- 7.0 sec chord
Diameter=33.8 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 386968, (2026/04/30 11:48UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:01.6 -26:29:17  0.9 18.65  43
34Ups Sco      17:32:33.4 -37:18:51  2.7 12.84  58
PPM 267497     17:56:31.4 -24:53:23  6.4  0.73  63
PPM 267390     17:52:06.9 -24:51:31  7.8  0.59  62
PPM 267410     17:53:06.8 -25:18:49  9.4  0.17  62
386968         17:53:51.8 -25:17:45 15.7        62
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)
Kamloops 11:45:09 -8.0 NT Up 13.8 185.9 Really Low 11:37:48 - 11:52:31 8785
Kelowna 11:45:03 -8.0 NT Up 14.6 186.7 Really Low 11:37:42 - 11:52:25 8755
Peachland 11:45:05 -8.2 NT Up 14.7 186.4 Really Low 11:37:43 - 11:52:26 8754
Summerland 11:45:04 -8.2 NT Up 14.9 186.5 Really Low 11:37:43 - 11:52:26 8749
Penticton 11:45:03 -8.2 NT Up 14.9 186.6 Really Low 11:37:41 - 11:52:24 8746
Victoria 11:45:27 -10.8 NT Up 16.1 183.1 Really Low 11:38:06 - 11:52:49 8741
Oliver 11:45:03 -8.4 NT Up 15.3 186.6 Really Low 11:37:42 - 11:52:25 8735
Anarchist Mountain Observatory 11:45:02 -8.4 NT Up 15.4 186.8 Really Low 11:37:41 - 11:52:24 8729
Okanogan 11:45:03 -8.9 NT Up 16.1 186.6 Really Low 11:37:42 - 11:52:25 8710
Brewster 11:45:05 -9.2 NT Up 16.4 186.5 Really Low 11:37:43 - 11:52:26 8703
Manson/Chelan 11:45:06 -9.5 NT Up 16.6 186.1 Really Low 11:37:44 - 11:52:27 8699
Wenatchee 11:45:07 -9.8 NT Up 17.1 186.0 Really Low 11:37:45 - 11:52:28 8684
Sleaford 11:43:53 0.4 Sun up Down 10.6 198.7 Really Low 11:36:31 - 11:51:14 8673
Ellensburg 11:45:08 -10.2 NT Up 17.5 185.8 Really Low 11:37:46 - 11:52:29 8672
Yakima 11:45:08 -10.4 NT Up 17.9 185.8 Really Low 11:37:46 - 11:52:29 8658
Toppenish/White Swan 11:45:07 -10.5 NT Up 18.1 186.0 Really Low 11:37:46 - 11:52:29 8649
The Dalles 11:45:12 -11.4 NT Up 18.9 185.2 Really Low 11:37:50 - 11:52:33 8627
PNWRO 11:44:57 -9.8 NT Up 18.4 187.4 Really Low 11:37:36 - 11:52:19 8624
Maupin 11:45:11 -11.5 NT Up 19.3 185.4 Really Low 11:37:49 - 11:52:32 8611
Sisters 11:45:14 -12.3 AT Up 20.3 184.9 Low 11:37:52 - 11:52:35 8581
Bend 11:45:12 -12.3 AT Up 20.5 185.2 Low 11:37:50 - 11:52:33 8570
Oregon Observatory 11:45:13 -12.5 AT Up 20.7 185.1 Low 11:37:51 - 11:52:34 8564
Chiloquin 11:45:15 -13.5 AT Up 22.0 184.7 Low 11:37:53 - 11:52:36 8513
Klamath Falls 11:45:14 -13.6 AT Up 22.3 184.8 Low 11:37:52 - 11:52:35 8498
Cedarville 11:45:03 -13.1 AT Up 22.9 186.3 Low 11:37:42 - 11:52:25 8455
Fall River/Burney 11:45:11 -14.1 AT Up 23.5 185.2 Low 11:37:49 - 11:52:32 8443
Greenville 11:45:08 -14.3 AT Up 24.4 185.7 Low 11:37:47 - 11:52:30 8398
Gimple 11:45:07 -14.3 AT Up 24.3 185.7 Low 11:37:46 - 11:52:29 8397
Quincy 11:45:08 -14.4 AT Up 24.6 185.7 Low 11:37:46 - 11:52:29 8388
Portola 11:45:06 -14.2 AT Up 24.6 186.1 Low 11:37:44 - 11:52:27 8379
Reno 11:45:00 -14.0 AT Up 24.9 186.8 Low 11:37:39 - 11:52:22 8360
Carson City 11:45:00 -14.1 AT Up 25.2 186.8 Low 11:37:38 - 11:52:21 8343
Gardnerville 11:45:00 -14.2 AT Up 25.4 186.9 Low 11:37:38 - 11:52:21 8331
Yerington 11:44:55 -13.8 AT Up 25.3 187.4 Low 11:37:34 - 11:52:17 8327
Hawthorne 11:44:52 -13.8 AT Up 25.7 188.0 Low 11:37:30 - 11:52:13 8299
Lee Vining 11:44:56 -14.4 AT Up 26.4 187.6 Low 11:37:34 - 11:52:17 8277
Bishop 11:44:50 -14.2 AT Up 26.9 188.3 Low 11:37:28 - 11:52:11 8238
Dunrhomin 11:43:24 -4.0 CT Down 21.6 200.5 Low 11:36:03 - 11:50:46 8202
Beatty 11:44:38 -13.4 AT Up 27.1 189.9 Low 11:37:16 - 11:51:59 8196
Nikitin 11:43:24 -4.1 CT Down 21.8 200.5 Low 11:36:03 - 11:50:46 8193
CU-SBO 11:43:24 -4.2 CT Down 21.8 200.4 Low 11:36:03 - 11:50:46 8191
Patrick 11:44:16 -12.1 AT Up 28.1 192.9 Low 11:36:54 - 11:51:37 8080
Laughlin/Bullhead City 11:44:22 -12.7 AT Up 28.5 192.2 Low 11:37:01 - 11:51:44 8075
Wildwood 11:44:49 -16.1 AT Up 30.1 188.3 Up 11:37:27 - 11:52:10 8062
Lake Havasu City 11:44:19 -12.9 AT Up 29.1 192.6 Low 11:36:57 - 11:51:40 8034
Idyllwild 11:44:36 -14.9 AT Up 30.2 190.3 Up 11:37:14 - 11:51:57 8021
Calipatria 11:44:27 -14.4 AT Up 30.7 191.5 Up 11:37:05 - 11:51:48 7970
George/Scottsdale 11:44:01 -11.5 NT Up 29.4 195.1 Low 11:36:40 - 11:51:23 7955
Yuma 11:44:19 -14.0 AT Up 30.9 192.5 Up 11:36:58 - 11:51:41 7933

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, (2026/04/30 11:48UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.65  43
34Ups Sco      17:30:45.8 -37:17:46  2.7 12.84  58
PPM 267497     17:54:54.1 -24:53:13  6.4  0.73  63
PPM 267390     17:50:29.7 -24:51:11  7.8  0.59  62
PPM 267410     17:51:29.3 -25:18:31  9.4  0.17  62
386968         17:52:14.2 -25:17:29 15.7        62
Positions are for J2000

Event circumstances last updated at 2024/03/04 05:55:24 UT

Marc W. Buie, Southwest Research Institute

RECON