RECON: TNO occultation with 459865

Event between (459865) 13XZ8 and star GA0680:21232295 with event index number of 2284345

Geocentric closest approach at 2026/07/01 09:35:13 UTC

J2000 position of star is 17:57:07.8 -21:45:09
Equinox of date position of star is 17:58:36.1 -21:45:14
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 26 degrees from the moon. Moon is 98% illuminated.
Apparent brightness V=19.6

[RECON map]
Object is 10.6 AU from the Sun and 9.6 AU from the Earth.
Apparent velocity is 20.3 km/sec on the sky relative to the star, or, 10.5 arcsec/hr.
The 1-sigma error in the time of the event is 43 seconds.
The 1-sigma cross-track error in the shadow position is 481 km.
The sky-plane scale is 6937.0 km/arcsec.

The object has an absolute magnitude Hv=9.5
Diameter=70.8 km assuming a 5% albedo -- 3.7 sec chord
Diameter=28.9 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 459865, (2026/07/01 09:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:02.2 -26:29:18  0.9 20.53  45
35Eta Oph      17:11:54.0 -15:45:21  2.6 12.60  38
PPM 267709     18:03:30.8 -22:46:43  5.8  1.51  25
PPM 267533     17:57:57.1 -21:57:30  7.3  0.27  26
PPM 267534     17:57:57.8 -21:48:58  9.6  0.19  26
459865         17:58:43.4 -21:45:14 16.5        26
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=0.4 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 09:34:18 -13.7 AT Up 11.8 211.5 Really Low 09:30:14 - 09:38:21 7797
Kelowna 09:34:12 -14.2 AT Up 12.2 212.3 Really Low 09:30:08 - 09:38:15 7769
Peachland 09:34:13 -14.4 AT Up 12.4 212.1 Really Low 09:30:09 - 09:38:16 7767
Summerland 09:34:12 -14.5 AT Up 12.5 212.2 Really Low 09:30:09 - 09:38:16 7762
Penticton 09:34:12 -14.5 AT Up 12.5 212.3 Really Low 09:30:08 - 09:38:15 7759
Oliver 09:34:11 -14.9 AT Up 12.8 212.3 Really Low 09:30:07 - 09:38:14 7748
Anarchist Mountain Observatory 09:34:09 -15.0 AT Up 12.9 212.5 Really Low 09:30:06 - 09:38:13 7742
Sleaford 09:33:43 -8.3 NT Up 5.3 223.6 Really Low 09:29:40 - 09:37:47 7739
Victoria 09:34:21 -16.4 AT Up 14.7 209.0 Really Low 09:30:17 - 09:38:24 7738
Okanogan 09:34:09 -15.6 AT Up 13.5 212.4 Really Low 09:30:05 - 09:38:12 7720
Brewster 09:34:08 -15.9 AT Up 13.8 212.3 Really Low 09:30:05 - 09:38:12 7712
Manson/Chelan 09:34:09 -16.2 AT Up 14.1 212.0 Really Low 09:30:05 - 09:38:12 7706
Wenatchee 09:34:08 -16.7 AT Up 14.6 211.9 Really Low 09:30:05 - 09:38:12 7690
Ellensburg 09:34:08 -17.1 AT Up 15.0 211.7 Really Low 09:30:05 - 09:38:12 7676
Yakima 09:34:07 -17.5 AT Up 15.4 211.8 Really Low 09:30:04 - 09:38:11 7661
Toppenish/White Swan 09:34:06 -17.7 AT Up 15.5 212.0 Really Low 09:30:03 - 09:38:10 7652
PNWRO 09:34:01 -17.6 AT Up 15.3 213.3 Really Low 09:29:57 - 09:38:04 7632
The Dalles 09:34:07 -18.6 Dark Up 16.5 211.4 Really Low 09:30:04 - 09:38:11 7625
Maupin 09:34:05 -19.0 Dark Up 16.8 211.5 Really Low 09:30:02 - 09:38:09 7608
Sisters 09:34:05 -19.9 Dark Up 17.7 211.2 Really Low 09:30:01 - 09:38:08 7575
Bend 09:34:03 -20.1 Dark Up 17.8 211.5 Really Low 09:30:00 - 09:38:07 7564
Oregon Observatory 09:34:04 -20.3 Dark Up 18.0 211.4 Really Low 09:30:00 - 09:38:07 7557
Chiloquin 09:34:02 -21.6 Dark Up 19.3 211.3 Really Low 09:29:59 - 09:38:06 7501
Klamath Falls 09:34:01 -21.9 Dark Up 19.6 211.4 Really Low 09:29:57 - 09:38:04 7486
Cedarville 09:33:54 -22.1 Dark Up 19.5 212.9 Really Low 09:29:50 - 09:37:57 7448
Fall River/Burney 09:33:57 -22.9 Dark Up 20.4 211.9 Low 09:29:53 - 09:38:00 7430
Greenville 09:33:53 -23.7 Dark Up 21.0 212.5 Low 09:29:49 - 09:37:56 7385
Gimple 09:33:53 -23.6 Dark Up 21.0 212.6 Low 09:29:49 - 09:37:56 7384
Quincy 09:33:52 -23.8 Dark Up 21.2 212.6 Low 09:29:49 - 09:37:56 7375
Portola 09:33:50 -23.8 Dark Up 21.1 213.0 Low 09:29:47 - 09:37:54 7367
Reno 09:33:48 -23.9 Dark Up 21.1 213.6 Low 09:29:44 - 09:37:51 7351
Carson City 09:33:47 -24.2 Dark Up 21.3 213.7 Low 09:29:43 - 09:37:50 7333
Gardnerville 09:33:46 -24.4 Dark Up 21.5 213.8 Low 09:29:42 - 09:37:49 7320
Yerington 09:33:44 -24.2 Dark Up 21.2 214.3 Low 09:29:40 - 09:37:47 7320
Hawthorne 09:33:41 -24.5 Dark Up 21.4 214.9 Low 09:29:37 - 09:37:44 7293
Lee Vining 09:33:42 -25.1 Dark Up 22.1 214.6 Low 09:29:38 - 09:37:45 7267
Dunrhomin 09:33:02 -17.8 AT Up 13.4 225.5 Really Low 09:28:59 - 09:37:06 7258
Nikitin 09:33:01 -18.0 AT Up 13.6 225.5 Really Low 09:28:58 - 09:37:05 7249
CU-SBO 09:33:02 -18.1 Dark Up 13.7 225.4 Really Low 09:28:58 - 09:37:05 7246
Bishop 09:33:37 -25.4 Dark Up 22.2 215.3 Low 09:29:34 - 09:37:41 7231
Beatty 09:33:31 -25.3 Dark Up 21.9 216.8 Low 09:29:27 - 09:37:34 7195
Patrick 09:33:17 -25.6 Dark Up 21.6 219.6 Low 09:29:13 - 09:37:20 7090
Laughlin/Bullhead City 09:33:19 -26.1 Dark Up 22.2 219.1 Low 09:29:15 - 09:37:22 7081
Wildwood 09:33:31 -28.5 Dark Up 25.0 216.0 Low 09:29:28 - 09:37:35 7047
Lake Havasu City 09:33:16 -26.6 Dark Up 22.6 219.4 Low 09:29:12 - 09:37:19 7040
Idyllwild 09:33:23 -28.1 Dark Up 24.4 217.7 Low 09:29:19 - 09:37:26 7014
George/Scottsdale 09:33:05 -26.2 Dark Up 21.8 221.6 Low 09:29:02 - 09:37:09 6972
Calipatria 09:33:17 -28.2 Dark Up 24.2 218.8 Low 09:29:13 - 09:37:20 6968
Yuma 09:33:13 -28.3 Dark Up 24.1 219.7 Low 09:29:09 - 09:37:16 6934

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, (2026/07/01 09:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.53  45
35Eta Oph      17:10:22.7 -15:43:29  2.6 12.60  38
PPM 267709     18:01:54.4 -22:46:50  5.8  1.51  25
PPM 267533     17:56:21.3 -21:57:23  7.3  0.27  26
PPM 267534     17:56:22.1 -21:48:52  9.6  0.19  26
459865         17:57:07.8 -21:45:09 16.5        26
Positions are for J2000

Event circumstances last updated at 2024/06/19 21:29:55 UT

Marc W. Buie, Southwest Research Institute

RECON