RECON: TNO occultation with 459865

Event between (459865) 13XZ8 and star GA0660:22870460 with event index number of 2284272

Geocentric closest approach at 2026/06/05 08:40:52 UTC

J2000 position of star is 18:04:58.7 -22:05:04
Equinox of date position of star is 18:06:27.2 -22:04:52
Stellar brightness G=11.8, use SENSEUP=8 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 39 degrees from the moon. Moon is 79% illuminated.
Apparent brightness V=19.7

[RECON map]
Object is 10.5 AU from the Sun and 9.5 AU from the Earth.
Apparent velocity is 19.6 km/sec on the sky relative to the star, or, 10.2 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 516 km.
The sky-plane scale is 6922.6 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, (2026/06/05 08:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:01.9 -26:29:18  0.9 22.18  60
Nunki          18:56:54.1 -26:15:41  2.0 12.21  27
PPM 267709     18:03:30.5 -22:46:44  5.8  0.99  39
PPM 267872     18:08:25.1 -22:02:30  7.8  0.43  38
PPM 267839     18:07:26.7 -22:12:01  9.4  0.23  38
459865         18:06:34.3 -22:04:50 11.8        38
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 10.6 km RECON observability=0.8 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 08:41:27 -12.3 AT Up 15.6 186.7 Really Low 08:37:18 - 08:45:35 4062
Kamloops 08:42:15 -16.2 AT Up 17.0 173.0 Really Low 08:38:07 - 08:46:24 3829
Kelowna 08:42:13 -16.9 AT Up 17.8 173.8 Really Low 08:38:04 - 08:46:21 3815
Peachland 08:42:13 -17.0 AT Up 17.9 173.5 Really Low 08:38:05 - 08:46:22 3807
Summerland 08:42:13 -17.1 AT Up 18.1 173.6 Really Low 08:38:05 - 08:46:22 3803
Penticton 08:42:13 -17.2 AT Up 18.2 173.7 Really Low 08:38:04 - 08:46:21 3802
Oliver 08:42:13 -17.5 AT Up 18.5 173.7 Really Low 08:38:04 - 08:46:21 3789
Anarchist Mountain Observatory 08:42:12 -17.7 AT Up 18.7 173.9 Really Low 08:38:04 - 08:46:21 3786
Okanogan 08:42:13 -18.3 Dark Up 19.3 173.6 Really Low 08:38:05 - 08:46:22 3757
Brewster 08:42:14 -18.6 Dark Up 19.6 173.4 Really Low 08:38:05 - 08:46:22 3743
Manson/Chelan 08:42:15 -18.9 Dark Up 19.7 173.1 Really Low 08:38:07 - 08:46:24 3729
Wenatchee 08:42:16 -19.4 Dark Up 20.2 172.9 Low 08:38:07 - 08:46:24 3707
Victoria 08:42:27 -18.6 Dark Up 18.8 170.0 Really Low 08:38:18 - 08:46:35 3696
Ellensburg 08:42:17 -19.8 Dark Up 20.6 172.6 Low 08:38:08 - 08:46:25 3686
PNWRO 08:42:11 -20.6 Dark Up 21.7 174.2 Low 08:38:02 - 08:46:19 3674
Yakima 08:42:17 -20.2 Dark Up 21.0 172.6 Low 08:38:08 - 08:46:25 3669
Toppenish/White Swan 08:42:16 -20.4 Dark Up 21.2 172.8 Low 08:38:08 - 08:46:25 3663
The Dalles 08:42:19 -21.3 Dark Up 21.9 172.0 Low 08:38:11 - 08:46:28 3615
Dunrhomin 08:41:14 -22.8 Dark Up 27.3 188.0 Low 08:37:05 - 08:45:22 3611
Nikitin 08:41:13 -23.0 Dark Up 27.4 188.0 Low 08:37:05 - 08:45:22 3602
Maupin 08:42:19 -21.7 Dark Up 22.3 172.0 Low 08:38:10 - 08:46:27 3598
CU-SBO 08:41:14 -23.1 Dark Up 27.5 187.9 Low 08:37:05 - 08:45:22 3598
Sisters 08:42:21 -22.6 Dark Up 23.2 171.5 Low 08:38:13 - 08:46:30 3550
Bend 08:42:20 -22.8 Dark Up 23.4 171.7 Low 08:38:12 - 08:46:29 3544
Oregon Observatory 08:42:21 -23.0 Dark Up 23.6 171.6 Low 08:38:12 - 08:46:29 3533
Chiloquin 08:42:22 -24.3 Dark Up 24.8 171.1 Low 08:38:14 - 08:46:31 3462
Klamath Falls 08:42:22 -24.7 Dark Up 25.2 171.2 Low 08:38:14 - 08:46:31 3446
Cedarville 08:42:16 -25.1 Dark Up 26.1 172.7 Low 08:38:07 - 08:46:24 3443
Fall River/Burney 08:42:21 -25.8 Dark Up 26.4 171.4 Low 08:38:12 - 08:46:29 3394
Gimple 08:42:19 -26.6 Dark Up 27.4 171.9 Low 08:38:10 - 08:46:27 3357
Greenville 08:42:19 -26.6 Dark Up 27.3 171.8 Low 08:38:10 - 08:46:27 3355
Portola 08:42:17 -26.9 Dark Up 27.7 172.3 Low 08:38:09 - 08:46:26 3348
Reno 08:42:14 -27.0 Dark Up 28.1 173.0 Low 08:38:06 - 08:46:23 3346
Quincy 08:42:19 -26.8 Dark Up 27.6 171.8 Low 08:38:10 - 08:46:27 3345
Yerington 08:42:11 -27.5 Dark Up 28.7 173.6 Low 08:38:03 - 08:46:20 3329
Carson City 08:42:14 -27.4 Dark Up 28.4 173.0 Low 08:38:06 - 08:46:23 3327
Gardnerville 08:42:14 -27.6 Dark Up 28.7 173.0 Low 08:38:06 - 08:46:23 3315
Hawthorne 08:42:09 -27.8 Dark Up 29.2 174.1 Low 08:38:01 - 08:46:18 3314
Lee Vining 08:42:11 -28.5 Dark Up 29.7 173.6 Low 08:38:03 - 08:46:20 3273
Beatty 08:42:01 -29.1 Dark Up 30.9 176.0 Up 08:37:52 - 08:46:09 3258
Bishop 08:42:08 -28.9 Dark Up 30.3 174.3 Up 08:38:00 - 08:46:17 3253
Patrick 08:41:48 -29.8 Dark Up 32.5 179.0 Up 08:37:39 - 08:45:56 3223
Laughlin/Bullhead City 08:41:51 -30.2 Dark Up 32.7 178.3 Up 08:37:42 - 08:45:59 3196
Lake Havasu City 08:41:49 -30.8 Dark Up 33.4 178.5 Up 08:37:41 - 08:45:58 3160
George/Scottsdale 08:41:38 -30.9 Dark Up 34.2 181.2 Up 08:37:29 - 08:45:46 3155
Idyllwild 08:42:00 -32.1 Dark Up 34.1 175.9 Up 08:37:51 - 08:46:08 3070
Wildwood 08:42:08 -32.1 Dark Up 33.6 173.9 Up 08:38:00 - 08:46:17 3054
Calipatria 08:41:54 -32.4 Dark Up 34.7 177.2 Up 08:37:45 - 08:46:02 3053
Yuma 08:41:50 -32.6 Dark Up 35.2 178.2 Up 08:37:41 - 08:45:58 3043

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, (2026/06/05 08:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 22.18  60
Nunki          18:55:15.9 -26:17:50  2.0 12.21  27
PPM 267709     18:01:54.4 -22:46:50  5.8  0.99  39
PPM 267872     18:06:49.5 -22:02:48  7.8  0.43  38
PPM 267839     18:05:51.0 -22:12:16  9.4  0.23  38
459865         18:04:58.7 -22:05:04 11.8        38
Positions are for J2000

Event circumstances last updated at 2024/06/19 21:25:34 UT

Marc W. Buie, Southwest Research Institute

RECON