RECON: TNO occultation with 459865

Event between (459865) 13XZ8 and star GA0660:24408757 with event index number of 2284113

Geocentric closest approach at 2026/04/03 11:37:04 UTC

J2000 position of star is 18:13:55.5 -22:54:06
Equinox of date position of star is 18:15:24.5 -22:53:35
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 64 degrees from the moon. Moon is 98% illuminated.
Apparent brightness V=20.1

[RECON map]
Object is 10.4 AU from the Sun and 10.2 AU from the Earth.
Apparent velocity is 5.6 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 128 seconds.
The 1-sigma cross-track error in the shadow position is 723 km.
The sky-plane scale is 7385.8 km/arcsec.

The object has an absolute magnitude Hv=9.5
Diameter=70.8 km assuming a 5% albedo -- 13.7 sec chord
Diameter=28.9 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 459865, (2026/04/03 11:22UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:01.3 -26:29:16  0.9 23.96  40
Nunki          18:56:53.5 -26:15:42  2.0  9.99  73
11 Sgr         18:13:19.5 -23:41:37  4.5  0.95  63
PPM 268070     18:14:55.3 -22:49:29  8.5  0.15  64
459865         18:15:31.0 -22:53:33 16.9        64
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 27.0 km RECON observability=0.5 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)
Victoria 11:46:15 -19.4 Dark Up 14.2 153.0 Really Low 11:35:05 - 11:57:25 5664
Chiloquin 11:45:27 -21.7 Dark Up 19.9 153.4 Really Low 11:34:17 - 11:56:37 5594
Sisters 11:45:50 -20.6 Dark Up 18.5 154.1 Really Low 11:34:40 - 11:57:00 5589
Klamath Falls 11:45:27 -21.9 Dark Up 20.2 153.5 Low 11:34:17 - 11:56:37 5588
Oregon Observatory 11:45:48 -20.8 Dark Up 18.9 154.1 Really Low 11:34:38 - 11:56:58 5582
Bend 11:45:50 -20.6 Dark Up 18.8 154.3 Really Low 11:34:40 - 11:57:00 5576
The Dalles 11:46:08 -19.7 Dark Up 17.4 154.7 Really Low 11:34:58 - 11:57:18 5575
Maupin 11:46:06 -19.8 Dark Up 17.9 154.7 Really Low 11:34:56 - 11:57:16 5569
Fall River/Burney 11:45:17 -22.2 Dark Up 21.4 153.6 Low 11:34:07 - 11:56:27 5561
Yakima 11:46:25 -18.8 Dark Up 16.7 155.4 Really Low 11:35:15 - 11:57:35 5549
Ellensburg 11:46:29 -18.5 Dark Up 16.4 155.5 Really Low 11:35:19 - 11:57:39 5548
Toppenish/White Swan 11:46:23 -18.8 Dark Up 17.0 155.5 Really Low 11:35:13 - 11:57:33 5541
Wenatchee 11:46:37 -18.2 Dark Up 16.1 155.8 Really Low 11:35:27 - 11:57:47 5539
Kamloops 11:47:06 -16.5 AT Up 13.1 156.2 Really Low 11:35:56 - 11:58:16 5532
Manson/Chelan 11:46:43 -17.8 AT Up 15.7 156.0 Really Low 11:35:33 - 11:57:53 5531
Greenville 11:45:11 -22.4 Dark Up 22.4 153.8 Low 11:34:01 - 11:56:21 5531
Quincy 11:45:15 -22.5 Dark Up 22.5 153.8 Low 11:34:05 - 11:56:25 5529
Gimple 11:45:16 -22.3 Dark Up 22.4 153.9 Low 11:34:06 - 11:56:26 5527
Brewster 11:46:49 -17.5 AT Up 15.6 156.4 Really Low 11:35:39 - 11:57:59 5515
Peachland 11:47:03 -16.6 AT Up 14.1 156.7 Really Low 11:35:53 - 11:58:13 5511
Summerland 11:47:03 -16.6 AT Up 14.3 156.7 Really Low 11:35:53 - 11:58:13 5508
Cedarville 11:45:36 -21.1 Dark Up 21.4 154.9 Low 11:34:26 - 11:56:46 5507
Okanogan 11:46:50 -17.2 AT Up 15.4 156.6 Really Low 11:35:40 - 11:58:00 5506
Portola 11:45:15 -22.2 Dark Up 22.8 154.2 Low 11:34:05 - 11:56:25 5504
Oliver 11:46:59 -16.8 AT Up 14.7 156.8 Really Low 11:35:49 - 11:58:09 5504
Penticton 11:47:03 -16.6 AT Up 14.4 156.8 Really Low 11:35:53 - 11:58:13 5503
Kelowna 11:47:07 -16.4 AT Up 14.1 157.0 Really Low 11:35:57 - 11:58:17 5498
Anarchist Mountain Observatory 11:46:59 -16.8 AT Up 14.9 156.9 Really Low 11:35:49 - 11:58:09 5497
PNWRO 11:46:36 -18.0 Dark Up 17.8 156.9 Really Low 11:35:26 - 11:57:46 5474
Reno 11:45:18 -21.9 Dark Up 23.3 154.8 Low 11:34:08 - 11:56:28 5469
Carson City 11:45:18 -22.0 Dark Up 23.6 154.7 Low 11:34:08 - 11:56:28 5464
Gardnerville 11:45:15 -22.1 Dark Up 23.8 154.7 Low 11:34:05 - 11:56:25 5458
Yerington 11:45:22 -21.7 Dark Up 24.0 155.3 Low 11:34:12 - 11:56:32 5429
Lee Vining 11:45:14 -22.1 Dark Up 24.9 155.1 Low 11:34:04 - 11:56:24 5413
Hawthorne 11:45:25 -21.5 Dark Up 24.6 155.7 Low 11:34:15 - 11:56:35 5396
Bishop 11:45:14 -21.9 Dark Up 25.7 155.7 Low 11:34:04 - 11:56:24 5366
Wildwood 11:44:34 -23.5 Dark Up 28.6 154.6 Low 11:33:24 - 11:55:44 5315
Beatty 11:45:32 -20.8 Dark Up 26.7 157.2 Low 11:34:22 - 11:56:42 5270
Idyllwild 11:44:57 -22.2 Dark Up 29.6 156.5 Low 11:33:47 - 11:56:07 5204
Calipatria 11:45:02 -21.5 Dark Up 30.5 157.5 Up 11:33:52 - 11:56:12 5120
Laughlin/Bullhead City 11:45:39 -19.9 Dark Up 29.0 159.1 Low 11:34:29 - 11:56:49 5113
Lake Havasu City 11:45:34 -19.9 Dark Up 29.7 159.2 Low 11:34:24 - 11:56:44 5083
Patrick 11:45:50 -19.2 Dark Up 29.0 159.9 Low 11:34:40 - 11:57:00 5078
Yuma 11:45:11 -20.9 Dark Up 31.2 158.4 Up 11:34:01 - 11:56:21 5057
George/Scottsdale 11:45:59 -18.2 Dark Up 31.1 161.7 Up 11:34:49 - 11:57:09 4918
Sleaford 11:49:37 -7.4 NT Up 14.5 170.3 Really Low 11:38:27 - 12:00:47 4891
CU-SBO 11:48:20 -10.8 NT Up 26.4 169.9 Low 11:37:10 - 11:59:30 4673
Dunrhomin 11:48:24 -10.6 NT Up 26.2 170.0 Low 11:37:14 - 11:59:34 4672
Nikitin 11:48:21 -10.7 NT Up 26.4 170.0 Low 11:37:11 - 11:59:31 4669

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, (2026/04/03 11:22UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 23.96  40
Nunki          18:55:15.9 -26:17:49  2.0  9.99  73
11 Sgr         18:11:43.4 -23:42:05  4.5  0.95  63
PPM 268070     18:13:19.8 -22:50:02  8.5  0.15  64
459865         18:13:55.5 -22:54:06 16.9        64
Positions are for J2000

Event circumstances last updated at 2024/06/18 21:26:06 UT

Marc W. Buie, Southwest Research Institute

RECON