RECON: TNO occultation with 10JG210

Event between 10JG210 and star GA0800:11141133 with event index number of 1580185

Geocentric closest approach at 2026/08/11 05:58:46 UTC

J2000 position of star is 18:38:48.9 -08:24:38
Equinox of date position of star is 18:39:56.2 -08:23:28
Stellar brightness G=13.8, use SENSEUP=64
Star is 155 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=22.6

[RECON map]
TNO is 17.6 AU from the Sun and 16.8 AU from the Earth.
The TNO is moving 17.1 km/sec on the sky relative to the star, or, 5.0 arcsec/hr.
The 1-sigma error in the time of the event is 177 seconds.
The 1-sigma cross-track error in the shadow position is 2096 km.
The sky-plane scale is 12192.3 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=115.3 km assuming a 5% albedo -- 3.5 sec chord
Diameter=47.1 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10JG210, (2026/08/11 05:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:02.6 -26:29:19  0.9 35.57 131
Nunki          18:56:54.8 -26:15:40  2.0 18.31 164
PPM 202008     18:41:27.0 -07:45:53  5.7  0.69 155
PPM 202020     18:42:15.2 -08:41:32  8.0  0.58 155
PPM 201980     18:39:54.6 -08:22:28  9.4  0.09 155
10JG210        18:40:15.9 -08:23:07 13.8       155
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 5.1 sigma about the mid-time.
The median site spacing is 17.1 km RECON observability=1.0 and success probability=11.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Victoria 05:55:45 -18.7 Dark Down 32.9 186.5 Up 05:40:45 - 06:10:45 3930
Clarence Fulton 05:55:28 -18.8 Dark Down 30.8 191.0 Up 05:40:28 - 06:10:28 3869
Peachland 05:55:30 -19.1 Dark Down 31.3 190.6 Up 05:40:30 - 06:10:30 3858
Kelowna 05:55:29 -19.1 Dark Down 31.2 190.9 Up 05:40:29 - 06:10:29 3853
Summerland 05:55:30 -19.2 Dark Down 31.4 190.7 Up 05:40:30 - 06:10:30 3846
Penticton 05:55:30 -19.3 Dark Down 31.5 190.8 Up 05:40:30 - 06:10:30 3838
Oliver 05:55:30 -19.6 Dark Down 31.8 190.9 Up 05:40:30 - 06:10:30 3818
Anarchist Mountain Observatory 05:55:31 -19.8 Dark Down 32.0 191.1 Up 05:40:31 - 06:10:31 3801
Tonasket 05:55:30 -20.1 Dark Down 32.3 191.1 Up 05:40:30 - 06:10:30 3785
Okanogan 05:55:32 -20.3 Dark Down 32.6 191.0 Up 05:40:32 - 06:10:32 3771
Manson/Chelan 05:55:33 -20.5 Dark Down 33.2 190.4 Up 05:40:33 - 06:10:33 3765
Brewster 05:55:32 -20.5 Dark Down 32.9 190.8 Up 05:40:32 - 06:10:32 3763
Entiat 05:55:34 -20.6 Dark Down 33.4 190.3 Up 05:40:34 - 06:10:34 3755
Wenatchee 05:55:36 -20.8 Dark Down 33.7 190.2 Up 05:40:36 - 06:10:36 3744
Ellensburg 05:55:37 -21.1 Dark Down 34.1 190.0 Up 05:40:37 - 06:10:37 3728
Yakima 05:55:37 -21.4 Dark Down 34.5 190.0 Up 05:40:37 - 06:10:37 3704
Toppenish/White Swan 05:55:37 -21.7 Dark Down 34.7 190.3 Up 05:40:37 - 06:10:37 3684
The Dalles 05:55:40 -22.0 Dark Down 35.5 189.4 Up 05:40:40 - 06:10:40 3669
Goldendale 05:55:40 -22.0 Dark Down 35.3 189.8 Up 05:40:40 - 06:10:40 3668
Maupin 05:55:42 -22.4 Dark Down 35.9 189.6 Up 05:40:42 - 06:10:42 3639
Pasco 05:55:33 -22.2 Dark Down 34.6 191.8 Up 05:40:33 - 06:10:33 3625
Sisters 05:55:44 -22.9 Dark Down 36.9 189.1 Up 05:40:44 - 06:10:44 3606
PNWRO 05:55:32 -22.5 Dark Down 34.9 192.1 Up 05:40:32 - 06:10:32 3600
Redmond 05:55:43 -23.1 Dark Down 36.8 189.6 Up 05:40:43 - 06:10:43 3587
Bend 05:55:44 -23.2 Dark Down 37.1 189.5 Up 05:40:44 - 06:10:44 3580
Oregon Observatory 05:55:46 -23.3 Dark Down 37.3 189.3 Up 05:40:46 - 06:10:46 3574
La Pine/Gilchrist 05:55:45 -23.4 Dark Down 37.5 189.3 Up 05:40:45 - 06:10:45 3564
North Lake 05:55:44 -24.0 Dark Down 37.8 190.1 Up 05:40:44 - 06:10:44 3510
Klamath Falls 05:55:48 -24.5 Dark Down 38.9 189.2 Up 05:40:48 - 06:10:48 3483
Paisley 05:55:43 -24.6 Dark Down 38.3 190.6 Up 05:40:43 - 06:10:43 3459
Lakeview 05:55:44 -25.1 Dark Down 38.8 190.9 Up 05:40:44 - 06:10:44 3417
Fall River/Burney 05:55:50 -25.6 Dark Down 40.1 189.8 Up 05:40:50 - 06:10:50 3388
Cedarville 05:55:44 -25.7 Dark Down 39.4 191.3 Up 05:40:44 - 06:10:44 3366
Susanville 05:55:47 -26.4 Dark Down 40.6 190.8 Up 05:40:47 - 06:10:47 3312
Greenville 05:55:49 -26.5 Dark Down 40.9 190.5 Up 05:40:49 - 06:10:49 3307
Gimple 05:55:49 -26.6 Dark Down 40.9 190.6 Up 05:40:49 - 06:10:49 3303
Quincy 05:55:49 -26.7 Dark Down 41.1 190.6 Up 05:40:49 - 06:10:49 3293
Portola 05:55:48 -27.0 Dark Down 41.1 191.2 Up 05:40:48 - 06:10:48 3263
Reno 05:55:45 -27.5 Dark Down 41.3 192.1 Up 05:40:45 - 06:10:45 3215
Carson City 05:55:46 -27.8 Dark Down 41.6 192.2 Up 05:40:46 - 06:10:46 3189
Gardnerville 05:55:46 -28.0 Dark Down 41.9 192.3 Up 05:40:46 - 06:10:46 3170
Yerington 05:55:43 -28.3 Dark Down 41.7 193.0 Up 05:40:43 - 06:10:43 3146
Hawthorne 05:55:42 -28.9 Dark Down 42.1 193.8 Up 05:40:42 - 06:10:42 3089
Lee Vining 05:55:45 -29.1 Dark Down 42.7 193.3 Up 05:40:45 - 06:10:45 3071
Bishop 05:55:43 -29.9 Dark Down 43.2 194.4 Up 05:40:43 - 06:10:43 2994
Tonopah 05:55:37 -29.9 Dark Down 42.3 195.7 Up 05:40:37 - 06:10:37 2989
CPSLO 05:55:57 -30.6 Dark Down 45.6 191.8 Up 05:40:57 - 06:10:57 2951
Beatty 05:55:38 -31.0 Dark Down 43.3 196.6 Up 05:40:38 - 06:10:38 2883
Indian Springs 05:55:33 -31.8 Dark Down 43.3 198.1 Up 05:40:33 - 06:10:33 2807
Wildwood 05:55:50 -32.5 Dark Down 46.4 195.0 Up 05:40:50 - 06:10:50 2761
Henderson 05:55:31 -32.5 Dark Down 43.7 199.2 Up 05:40:31 - 06:10:31 2733
Searchlight/Boulder City 05:55:32 -33.0 Dark Down 44.2 199.5 Up 05:40:32 - 06:10:32 2686
Laughlin/Bullhead City 05:55:31 -33.4 Dark Down 44.4 200.0 Up 05:40:31 - 06:10:31 2646
Idyllwild 05:55:43 -33.7 Dark Down 46.3 197.7 Up 05:40:43 - 06:10:43 2641
Patrick 05:55:28 -33.5 Dark Down 43.9 200.9 Up 05:40:28 - 06:10:28 2631
Mohave Valley 05:55:32 -33.7 Dark Down 44.6 200.1 Up 05:40:32 - 06:10:32 2625
Kingman/Dolan Springs 05:55:29 -33.6 Dark Down 44.2 200.7 Up 05:40:29 - 06:10:29 2623
Niwot 05:54:47 -32.2 Dark Down 36.8 209.6 Up 05:39:47 - 06:09:47 2591
SwRI 05:54:47 -32.3 Dark Down 37.0 209.5 Up 05:39:47 - 06:09:47 2587
Lake Havasu City 05:55:30 -34.1 Dark Down 44.9 200.6 Up 05:40:30 - 06:10:30 2582
DCO 05:55:25 -34.1 Dark Down 44.0 201.9 Up 05:40:25 - 06:10:25 2573
Parker 05:55:31 -34.4 Dark Down 45.3 200.8 Up 05:40:31 - 06:10:31 2553
Calipatria 05:55:38 -34.8 Dark Down 46.6 199.5 Up 05:40:38 - 06:10:38 2534
Blythe 05:55:34 -34.8 Dark Down 45.8 200.6 Up 05:40:34 - 06:10:34 2527
Yuma 05:55:36 -35.5 Dark Down 46.7 200.9 Up 05:40:36 - 06:10:36 2456
George/Scottsdale 05:55:21 -35.8 Dark Down 44.9 204.1 Up 05:40:21 - 06:10:21 2400

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 10JG210, (2026/08/11 05:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 35.57 131
Nunki          18:55:15.9 -26:17:49  2.0 18.31 164
PPM 202008     18:40:00.4 -07:47:28  5.7  0.69 155
PPM 202020     18:40:48.1 -08:43:08  8.0  0.58 155
PPM 201980     18:38:27.6 -08:23:58  9.4  0.09 155
10JG210        18:38:48.9 -08:24:38 13.8       155
Positions are for J2000

Event circumstances last updated at 2020/07/25 21:31:03 UT

Marc W. Buie, Southwest Research Institute

RECON