RECON: TNO occultation with 500882

Event between (500882) 13JN64 and star GA0720:12766975 with event index number of 1475360

Geocentric closest approach at 2026/04/10 10:31:08 UTC

J2000 position of star is 17:39:54.3 -16:23:49
Equinox of date position of star is 17:41:01.0 -16:24:22
Stellar brightness G=15.9, use SENSEUP=128
Star is 30 degrees from the moon. Moon is 48% illuminated.
TNO apparent brightness V=24.4

[RECON map]
TNO is 39.7 AU from the Sun and 39.3 AU from the Earth.
The TNO is moving 7.5 km/sec on the sky relative to the star, or, 1.0 arcsec/hr.
The 1-sigma error in the time of the event is 1108 seconds.
The 1-sigma cross-track error in the shadow position is 5102 km.
The sky-plane scale is 28468.4 km/arcsec.

The TNO has an absolute magnitude Hv=8.3
Diameter=131.8 km assuming a 5% albedo -- 17.5 sec chord
Diameter=53.8 km assuming a 30% albedo -- 7.1 sec chord
Dynamical classification is 7:3EEEE
 
 
 
 
 
 

Star training set for 500882, (2026/04/10 10:31UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:01.4 -26:29:17  0.9 19.20  43
35Eta Oph      17:11:53.2 -15:45:20  2.6  7.12  37
PPM 233351     17:39:06.7 -15:35:05  6.2  0.99  31
PPM 233369     17:39:54.2 -16:33:29 10.0  0.39  30
500882         17:41:25.4 -16:24:33 15.9        30
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 0.8 sigma about the mid-time.
The median site spacing is 10.3 km RECON observability=1.0 and success probability=5.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 10:39:58 -22.3 Dark Down 19.9 153.7 Really Low 10:24:58 - 10:54:58 3125
Penticton 10:39:59 -22.7 Dark Up 20.2 153.5 Low 10:24:59 - 10:54:59 3098
Summerland 10:40:01 -22.6 Dark Down 20.1 153.4 Low 10:25:01 - 10:55:01 3097
Okanagan Falls 10:40:01 -22.8 Dark Up 20.4 153.5 Low 10:25:01 - 10:55:01 3085
Oliver 10:40:01 -22.9 Dark Up 20.5 153.5 Low 10:25:01 - 10:55:01 3077
Anarchist Mountain Observatory 10:39:59 -22.9 Dark Up 20.7 153.6 Low 10:24:59 - 10:54:59 3073
Oroville 10:39:59 -23.0 Dark Up 20.8 153.5 Low 10:24:59 - 10:54:59 3066
Niwot 10:37:59 -20.8 Dark Up 32.4 166.4 Up 10:22:59 - 10:52:59 3053
Tonasket 10:39:59 -23.2 Dark Up 21.0 153.5 Low 10:24:59 - 10:54:59 3052
SwRI 10:38:01 -20.9 Dark Up 32.5 166.3 Up 10:23:01 - 10:53:01 3043
Okanogan 10:40:02 -23.5 Dark Up 21.3 153.3 Low 10:25:02 - 10:55:02 3027
Brewster 10:40:03 -23.8 Dark Up 21.4 153.1 Low 10:25:03 - 10:55:03 3003
Manson/Chelan 10:40:06 -24.1 Dark Up 21.5 152.7 Low 10:25:06 - 10:55:06 2977
Entiat 10:40:08 -24.3 Dark Up 21.7 152.6 Low 10:25:08 - 10:55:08 2961
Wenatchee 10:40:06 -24.5 Dark Up 21.9 152.4 Low 10:25:06 - 10:55:06 2942
Pasco 10:40:02 -24.8 Dark Up 23.3 153.4 Low 10:25:02 - 10:55:02 2913
Ellensburg 10:40:11 -24.9 Dark Up 22.2 152.2 Low 10:25:11 - 10:55:11 2908
PNWRO 10:40:01 -24.8 Dark Up 23.6 153.5 Low 10:25:01 - 10:55:01 2906
George/Umatilla 10:40:05 -25.1 Dark Up 23.5 153.1 Low 10:25:05 - 10:55:05 2884
Yakima 10:40:11 -25.2 Dark Up 22.5 152.1 Low 10:25:11 - 10:55:11 2882
Toppenish/White Swan 10:40:12 -25.3 Dark Up 22.8 152.2 Low 10:25:12 - 10:55:12 2874
Goldendale 10:40:15 -25.9 Dark Up 23.1 151.7 Low 10:25:15 - 10:55:15 2823
The Dalles 10:40:19 -26.2 Dark Up 23.2 151.3 Low 10:25:19 - 10:55:19 2795
Maupin 10:40:18 -26.5 Dark Up 23.6 151.3 Low 10:25:18 - 10:55:18 2772
Madras/Culver 10:40:16 -26.9 Dark Up 24.1 151.1 Low 10:25:16 - 10:55:16 2734
Redmond 10:40:18 -27.2 Dark Up 24.4 151.0 Low 10:25:18 - 10:55:18 2708
Sisters 10:40:23 -27.3 Dark Up 24.2 150.6 Low 10:25:23 - 10:55:23 2695
Bend 10:40:21 -27.4 Dark Up 24.5 150.8 Low 10:25:21 - 10:55:21 2689
Oregon Observatory 10:40:22 -27.6 Dark Up 24.6 150.7 Low 10:25:22 - 10:55:22 2672
La Pine/Gilchrist 10:40:20 -27.8 Dark Up 24.8 150.6 Low 10:25:20 - 10:55:20 2656
North Lake 10:40:18 -27.8 Dark Up 25.4 151.0 Low 10:25:18 - 10:55:18 2650
Paisley 10:40:16 -28.0 Dark Up 26.0 151.3 Low 10:25:16 - 10:55:16 2626
Lakeview 10:40:15 -28.2 Dark Up 26.5 151.3 Low 10:25:15 - 10:55:15 2599
Chiloquin 10:40:25 -28.7 Dark Up 25.6 150.0 Low 10:25:25 - 10:55:25 2566
Cedarville 10:40:15 -28.6 Dark Up 27.1 151.3 Low 10:25:15 - 10:55:15 2561
Klamath Falls 10:40:27 -28.9 Dark Up 26.0 150.0 Low 10:25:27 - 10:55:27 2546
Tulelake 10:40:24 -29.0 Dark Up 26.3 150.2 Low 10:25:24 - 10:55:24 2539
Fall River/Burney 10:40:23 -29.6 Dark Up 27.1 150.0 Low 10:25:23 - 10:55:23 2478
Susanville 10:40:16 -29.6 Dark Up 27.9 150.6 Low 10:25:16 - 10:55:16 2463
Tonopah 10:39:50 -29.3 Dark Up 31.2 153.4 Up 10:24:50 - 10:54:50 2435
Reno 10:40:09 -29.8 Dark Up 29.0 151.2 Low 10:25:09 - 10:55:09 2435
Gimple 10:40:20 -29.9 Dark Up 28.1 150.3 Low 10:25:20 - 10:55:20 2435
Greenville 10:40:21 -30.0 Dark Up 28.1 150.2 Low 10:25:21 - 10:55:21 2432
Portola 10:40:17 -30.0 Dark Up 28.5 150.6 Low 10:25:17 - 10:55:17 2428
Yerington 10:40:08 -29.8 Dark Up 29.7 151.7 Low 10:25:08 - 10:55:08 2422
Quincy 10:40:22 -30.1 Dark Up 28.2 150.2 Low 10:25:22 - 10:55:22 2418
Hawthorne 10:40:02 -29.8 Dark Up 30.3 152.1 Up 10:25:02 - 10:55:02 2411
Carson City 10:40:09 -30.0 Dark Up 29.3 151.1 Low 10:25:09 - 10:55:09 2410
Gardnerville 10:40:10 -30.2 Dark Up 29.6 151.1 Low 10:25:10 - 10:55:10 2395
Indian Springs 10:39:35 -29.3 Dark Up 33.1 154.5 Up 10:24:35 - 10:54:35 2392
DCO 10:39:08 -28.6 Dark Up 35.2 156.7 Up 10:24:08 - 10:54:08 2392
Patrick 10:39:16 -28.9 Dark Up 34.7 156.1 Up 10:24:16 - 10:54:16 2384
Henderson 10:39:29 -29.2 Dark Up 33.8 155.1 Up 10:24:29 - 10:54:29 2383
Beatty 10:39:43 -29.8 Dark Up 32.4 153.5 Up 10:24:43 - 10:54:43 2371
Kingman/Dolan Springs 10:39:17 -29.2 Dark Up 34.9 155.8 Up 10:24:17 - 10:54:17 2360
Lee Vining 10:40:05 -30.5 Dark Up 30.6 151.4 Up 10:25:05 - 10:55:05 2349
Searchlight/Boulder City 10:39:27 -29.5 Dark Up 34.3 155.0 Up 10:24:27 - 10:54:27 2343
Bishop 10:39:59 -30.4 Dark Up 31.4 152.0 Up 10:24:59 - 10:54:59 2336
Laughlin/Bullhead City 10:39:22 -29.5 Dark Up 34.7 155.2 Up 10:24:22 - 10:54:22 2336
Mohave Valley 10:39:24 -29.7 Dark Up 35.0 155.2 Up 10:24:24 - 10:54:24 2316
Lake Havasu City 10:39:18 -29.7 Dark Up 35.4 155.3 Up 10:24:18 - 10:54:18 2297
Lone Pine 10:39:57 -30.7 Dark Up 32.2 152.1 Up 10:24:57 - 10:54:57 2294
Parker 10:39:20 -29.9 Dark Up 35.7 155.2 Up 10:24:20 - 10:54:20 2272
Blythe 10:39:21 -30.4 Dark Up 36.1 154.8 Up 10:24:21 - 10:54:21 2220
Yuma 10:39:21 -31.0 Dark Up 36.9 154.4 Up 10:24:21 - 10:54:21 2148
Calipatria 10:39:30 -31.3 Dark Up 36.2 153.6 Up 10:24:30 - 10:54:30 2142
Idyllwild 10:39:42 -31.7 Dark Up 35.3 152.6 Up 10:24:42 - 10:54:42 2137
CPSLO 10:40:19 -33.1 Dark Up 32.4 149.1 Up 10:25:19 - 10:55:19 2086
Wildwood 10:40:01 -32.7 Dark Up 34.2 150.8 Up 10:25:01 - 10:55:01 2082

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 500882, (2026/04/10 10:31UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 19.20  43
35Eta Oph      17:10:22.7 -15:43:29  2.6  7.12  37
PPM 233351     17:37:36.2 -15:34:15  6.2  0.99  31
PPM 233369     17:38:23.0 -16:32:41 10.0  0.39  30
500882         17:39:54.3 -16:23:49 15.9        30
Positions are for J2000

Event circumstances last updated at 2019/03/25 02:17:07 UT

Marc W. Buie, Southwest Research Institute

RECON