RECON: TNO occultation with 459865

Event between (459865) 13XZ8 and star GA0680:20739393 with event index number of 2284384

Geocentric closest approach at 2026/07/07 07:49:30 UTC

J2000 position of star is 17:55:24.1 -21:40:45
Equinox of date position of star is 17:56:52.3 -21:40:53
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 100 degrees from the moon. Moon is 55% illuminated.
Apparent brightness V=19.7

[RECON map]
Object is 10.6 AU from the Sun and 9.6 AU from the Earth.
Apparent velocity is 19.6 km/sec on the sky relative to the star, or, 10.1 arcsec/hr.
The 1-sigma error in the time of the event is 44 seconds.
The 1-sigma cross-track error in the shadow position is 495 km.
The sky-plane scale is 6960.6 km/arcsec.

The object has an absolute magnitude Hv=9.5
Diameter=70.8 km assuming a 5% albedo -- 3.9 sec chord
Diameter=28.9 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 459865, (2026/07/07 07:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:02.3 -26:29:18  0.9 20.17 120
35Eta Oph      17:11:54.0 -15:45:21  2.6 12.20 111
PPM 267640     18:01:34.8 -20:20:21  6.0  1.72  99
PPM 267533     17:57:57.1 -21:57:30  7.3  0.35 100
PPM 267534     17:57:57.9 -21:48:58  9.6  0.26 100
459865         17:56:59.7 -21:40:54 16.8       100
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 14.7 km RECON observability=0.7 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 07:48:54 -14.8 AT Up 12.4 206.3 Really Low 07:44:45 - 07:53:03 5057
Kamloops 07:49:39 -16.7 AT Up 16.7 193.1 Really Low 07:45:30 - 07:53:48 4974
Kelowna 07:49:35 -17.5 AT Up 17.3 194.0 Really Low 07:45:26 - 07:53:44 4954
Peachland 07:49:35 -17.6 AT Up 17.5 193.7 Really Low 07:45:26 - 07:53:44 4949
Summerland 07:49:35 -17.8 AT Up 17.6 193.8 Really Low 07:45:26 - 07:53:44 4945
Penticton 07:49:35 -17.8 AT Up 17.7 193.9 Really Low 07:45:26 - 07:53:44 4943
Oliver 07:49:34 -18.2 Dark Up 18.0 193.9 Really Low 07:45:25 - 07:53:43 4931
Anarchist Mountain Observatory 07:49:33 -18.4 Dark Up 18.1 194.1 Really Low 07:45:24 - 07:53:42 4928
Okanogan 07:49:33 -19.0 Dark Up 18.8 194.0 Really Low 07:45:24 - 07:53:42 4903
Brewster 07:49:33 -19.3 Dark Up 19.1 193.8 Really Low 07:45:24 - 07:53:42 4893
Manson/Chelan 07:49:35 -19.5 Dark Up 19.4 193.5 Really Low 07:45:26 - 07:53:44 4883
Victoria 07:49:47 -18.6 Dark Up 19.2 190.3 Really Low 07:45:38 - 07:53:56 4881
Wenatchee 07:49:35 -19.9 Dark Up 19.8 193.3 Really Low 07:45:26 - 07:53:44 4865
Ellensburg 07:49:35 -20.3 Dark Up 20.3 193.2 Low 07:45:26 - 07:53:44 4848
Yakima 07:49:34 -20.7 Dark Up 20.7 193.2 Low 07:45:25 - 07:53:43 4832
Toppenish/White Swan 07:49:34 -21.0 Dark Up 20.9 193.4 Low 07:45:25 - 07:53:43 4825
PNWRO 07:49:27 -21.4 Dark Up 21.0 194.8 Low 07:45:18 - 07:53:36 4821
The Dalles 07:49:36 -21.7 Dark Up 21.7 192.7 Low 07:45:27 - 07:53:45 4789
Maupin 07:49:35 -22.1 Dark Up 22.1 192.8 Low 07:45:26 - 07:53:44 4773
Sisters 07:49:35 -23.0 Dark Up 23.1 192.4 Low 07:45:26 - 07:53:44 4733
Bend 07:49:34 -23.2 Dark Up 23.3 192.7 Low 07:45:25 - 07:53:43 4725
Oregon Observatory 07:49:35 -23.4 Dark Up 23.5 192.6 Low 07:45:26 - 07:53:44 4717
Chiloquin 07:49:35 -24.7 Dark Up 24.8 192.3 Low 07:45:26 - 07:53:44 4655
Klamath Falls 07:49:33 -25.0 Dark Up 25.1 192.4 Low 07:45:24 - 07:53:42 4640
Cedarville 07:49:26 -25.8 Dark Up 25.5 194.1 Low 07:45:17 - 07:53:35 4621
Dunrhomin 07:48:25 -26.4 Dark Up 22.7 208.6 Low 07:44:16 - 07:52:34 4610
Nikitin 07:48:24 -26.6 Dark Up 22.8 208.6 Low 07:44:15 - 07:52:33 4601
CU-SBO 07:48:25 -26.7 Dark Up 22.9 208.6 Low 07:44:16 - 07:52:34 4598
Fall River/Burney 07:49:30 -26.2 Dark Up 26.2 192.9 Low 07:45:21 - 07:53:39 4588
Gimple 07:49:28 -27.1 Dark Up 27.0 193.5 Low 07:45:19 - 07:53:37 4548
Greenville 07:49:28 -27.1 Dark Up 27.0 193.4 Low 07:45:19 - 07:53:37 4548
Quincy 07:49:28 -27.3 Dark Up 27.2 193.5 Low 07:45:19 - 07:53:37 4538
Portola 07:49:25 -27.5 Dark Up 27.3 194.0 Low 07:45:16 - 07:53:34 4536
Reno 07:49:22 -27.8 Dark Up 27.4 194.6 Low 07:45:13 - 07:53:31 4527
Carson City 07:49:22 -28.1 Dark Up 27.7 194.7 Low 07:45:13 - 07:53:31 4509
Yerington 07:49:19 -28.4 Dark Up 27.8 195.4 Low 07:45:10 - 07:53:28 4504
Gardnerville 07:49:21 -28.4 Dark Up 28.0 194.8 Low 07:45:12 - 07:53:30 4497
Hawthorne 07:49:16 -28.9 Dark Up 28.1 196.0 Low 07:45:07 - 07:53:25 4484
Lee Vining 07:49:17 -29.4 Dark Up 28.8 195.6 Low 07:45:08 - 07:53:26 4451
Bishop 07:49:13 -30.0 Dark Up 29.2 196.4 Low 07:45:04 - 07:53:22 4424
Beatty 07:49:05 -30.5 Dark Up 29.3 198.1 Low 07:44:56 - 07:53:14 4409
Patrick 07:48:51 -32.0 Dark Up 29.9 201.3 Low 07:44:42 - 07:53:00 4341
Laughlin/Bullhead City 07:48:53 -32.2 Dark Up 30.3 200.6 Up 07:44:44 - 07:53:02 4323
Lake Havasu City 07:48:51 -32.9 Dark Up 30.9 201.0 Up 07:44:42 - 07:53:00 4285
George/Scottsdale 07:48:39 -33.6 Dark Up 30.9 203.7 Up 07:44:30 - 07:52:48 4250
Wildwood 07:49:10 -33.3 Dark Up 32.4 196.7 Up 07:45:01 - 07:53:19 4236
Idyllwild 07:49:01 -33.7 Dark Up 32.3 198.7 Up 07:44:52 - 07:53:10 4229
Calipatria 07:48:55 -34.3 Dark Up 32.5 200.1 Up 07:44:46 - 07:53:04 4198
Yuma 07:48:50 -34.7 Dark Up 32.7 201.1 Up 07:44:41 - 07:52:59 4176

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 459865, (2026/07/07 07:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.17 120
35Eta Oph      17:10:22.8 -15:43:29  2.6 12.20 111
PPM 267640     18:00:00.1 -20:20:23  6.0  1.72  99
PPM 267533     17:56:21.3 -21:57:23  7.3  0.35 100
PPM 267534     17:56:22.1 -21:48:52  9.6  0.26 100
459865         17:55:24.1 -21:40:45 16.8       100
Positions are for J2000

Event circumstances last updated at 2024/06/19 21:30:12 UT

Marc W. Buie, Southwest Research Institute

RECON