RECON: TNO occultation with 10JG210

Event between 10JG210 and star GA0800:11714644 with event index number of 1580154

Geocentric closest approach at 2026/07/21 06:47:25 UTC

J2000 position of star is 18:41:43.8 -08:04:32
Equinox of date position of star is 18:42:47.7 -08:03:20
Stellar brightness G=15.5, use SENSEUP=128
Star is 76 degrees from the moon. Moon is 48% illuminated.
TNO apparent brightness V=21.2

[RECON map]
TNO is 17.6 AU from the Sun and 16.7 AU from the Earth.
The TNO is moving 20.9 km/sec on the sky relative to the star, or, 6.2 arcsec/hr.
The 1-sigma error in the time of the event is 372 seconds.
The 1-sigma cross-track error in the shadow position is 3672 km.
The sky-plane scale is 12086.2 km/arcsec.

The TNO has an absolute magnitude Hv=8.7
Diameter=109.1 km assuming a 5% albedo -- 5.2 sec chord
Diameter=44.6 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10JG210, (2026/07/21 06:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:02.4 -26:29:19  0.9 36.35  43
Nunki          18:56:54.6 -26:15:40  2.0 18.50  76
Eps Sct        18:44:58.0 -08:14:49  4.9  0.49  76
PPM 202030     18:42:57.4 -08:29:51  8.5  0.45  76
PPM 202035     18:43:05.4 -08:01:38  9.3  0.03  76
10JG210        18:43:10.4 -08:02:54 15.5        76
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 2.4 sigma about the mid-time.
The median site spacing is 15.7 km RECON observability=1.0 and success probability=8.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:45:57 -17.6 AT Down 32.0 180.8 Up 06:30:57 - 07:00:57 3800
Summerland 06:45:58 -17.8 AT Down 32.3 180.5 Up 06:30:58 - 07:00:58 3790
Penticton 06:45:58 -17.9 AT Down 32.4 180.7 Up 06:30:58 - 07:00:58 3784
Okanagan Falls 06:45:58 -18.0 Dark Down 32.6 180.6 Up 06:30:58 - 07:00:58 3773
Oliver 06:45:58 -18.2 Dark Down 32.7 180.7 Up 06:30:58 - 07:00:58 3764
Anarchist Mountain Observatory 06:45:57 -18.4 Dark Down 32.9 180.9 Up 06:30:57 - 07:00:57 3749
Oroville 06:45:58 -18.5 Dark Down 33.0 180.8 Up 06:30:58 - 07:00:58 3747
Tonasket 06:45:58 -18.7 Dark Down 33.2 180.8 Up 06:30:58 - 07:00:58 3733
Okanogan 06:45:59 -19.0 Dark Down 33.6 180.6 Up 06:30:59 - 07:00:59 3717
Brewster 06:46:00 -19.2 Dark Down 33.8 180.4 Up 06:31:00 - 07:01:00 3707
Manson/Chelan 06:46:01 -19.3 Dark Down 34.0 180.0 Up 06:31:01 - 07:01:01 3704
Wenatchee 06:46:03 -19.7 Dark Down 34.5 179.8 Up 06:31:03 - 07:01:03 3680
Ellensburg 06:46:04 -20.0 Dark Down 34.9 179.5 Up 06:31:04 - 07:01:04 3661
Yakima 06:46:04 -20.4 Dark Down 35.3 179.5 Up 06:31:04 - 07:01:04 3637
Toppenish/White Swan 06:46:04 -20.6 Dark Down 35.6 179.7 Up 06:31:04 - 07:01:04 3620
Goldendale 06:46:06 -21.1 Dark Down 36.1 179.2 Up 06:31:06 - 07:01:06 3597
The Dalles 06:46:08 -21.2 Dark Down 36.3 178.7 Up 06:31:08 - 07:01:08 3593
Pasco 06:46:00 -21.1 Dark Down 35.7 181.2 Up 06:31:00 - 07:01:00 3579
Maupin 06:46:08 -21.6 Dark Down 36.7 178.9 Up 06:31:08 - 07:01:08 3564
PNWRO 06:45:59 -21.3 Dark Down 35.9 181.5 Up 06:30:59 - 07:00:59 3558
Madras/Culver 06:46:08 -22.1 Dark Down 37.3 178.8 Up 06:31:08 - 07:01:08 3531
Sisters 06:46:10 -22.3 Dark Down 37.6 178.2 Up 06:31:10 - 07:01:10 3522
Redmond 06:46:09 -22.4 Dark Down 37.6 178.7 Up 06:31:09 - 07:01:09 3510
Bend 06:46:09 -22.6 Dark Down 37.9 178.6 Up 06:31:09 - 07:01:09 3500
Oregon Observatory 06:46:10 -22.7 Dark Down 38.0 178.4 Up 06:31:10 - 07:01:10 3493
La Pine/Gilchrist 06:46:11 -22.9 Dark Down 38.2 178.3 Up 06:31:11 - 07:01:11 3481
North Lake 06:46:09 -23.4 Dark Down 38.7 179.1 Up 06:31:09 - 07:01:09 3437
Chiloquin 06:46:14 -23.8 Dark Up 39.3 177.8 Up 06:31:14 - 07:01:14 3419
Klamath Falls 06:46:14 -24.2 Dark Up 39.7 177.9 Up 06:31:14 - 07:01:14 3394
Paisley 06:46:08 -24.1 Dark Down 39.2 179.5 Up 06:31:08 - 07:01:08 3391
Tulelake 06:46:13 -24.5 Dark Up 40.0 178.3 Up 06:31:13 - 07:01:13 3368
Lakeview 06:46:08 -24.6 Dark Down 39.7 179.8 Up 06:31:08 - 07:01:08 3352
Fall River/Burney 06:46:13 -25.4 Dark Up 40.9 178.4 Up 06:31:13 - 07:01:13 3305
Cedarville 06:46:08 -25.2 Dark Down 40.4 180.0 Up 06:31:08 - 07:01:08 3303
Susanville 06:46:12 -26.2 Dark Up 41.5 179.4 Up 06:31:12 - 07:01:12 3240
Greenville 06:46:13 -26.3 Dark Up 41.8 179.0 Up 06:31:13 - 07:01:13 3230
Gimple 06:46:13 -26.3 Dark Up 41.8 179.1 Up 06:31:13 - 07:01:13 3227
Quincy 06:46:13 -26.5 Dark Up 42.0 179.0 Up 06:31:13 - 07:01:13 3216
Portola 06:46:11 -26.8 Dark Up 42.1 179.6 Up 06:31:11 - 07:01:11 3193
Reno 06:46:09 -27.2 Dark Up 42.4 180.5 Up 06:31:09 - 07:01:09 3156
Carson City 06:46:10 -27.5 Dark Up 42.7 180.5 Up 06:31:10 - 07:01:10 3130
Gardnerville 06:46:10 -27.8 Dark Up 43.0 180.6 Up 06:31:10 - 07:01:10 3111
Yerington 06:46:08 -27.9 Dark Down 42.9 181.3 Up 06:31:08 - 07:01:08 3097
Hawthorne 06:46:06 -28.5 Dark Down 43.4 182.1 Up 06:31:06 - 07:01:06 3048
Lee Vining 06:46:09 -28.9 Dark Up 44.0 181.4 Up 06:31:09 - 07:01:09 3022
Tonopah 06:46:01 -29.3 Dark Down 43.8 184.0 Up 06:31:01 - 07:01:01 2972
Bishop 06:46:07 -29.6 Dark Down 44.5 182.4 Up 06:31:07 - 07:01:07 2956
Lone Pine 06:46:06 -30.4 Dark Down 45.3 182.9 Up 06:31:06 - 07:01:06 2890
Beatty 06:46:01 -30.5 Dark Down 44.9 184.7 Up 06:31:01 - 07:01:01 2872
CPSLO 06:46:18 -30.9 Dark Up 46.6 179.3 Up 06:31:18 - 07:01:18 2871
Indian Springs 06:45:57 -31.1 Dark Down 45.2 186.2 Up 06:30:57 - 07:00:57 2814
SwRI 06:45:14 -29.3 Dark Down 40.0 199.1 Up 06:30:14 - 07:00:14 2755
Henderson 06:45:55 -31.7 Dark Down 45.6 187.3 Up 06:30:55 - 07:00:55 2752
Wildwood 06:46:11 -32.6 Dark Up 47.8 182.3 Up 06:31:11 - 07:01:11 2714
Searchlight/Boulder City 06:45:55 -32.3 Dark Down 46.2 187.4 Up 06:30:55 - 07:00:55 2706
Laughlin/Bullhead City 06:45:54 -32.7 Dark Down 46.4 187.9 Up 06:30:54 - 07:00:54 2672
Patrick 06:45:50 -32.6 Dark Down 46.1 188.9 Up 06:30:50 - 07:00:50 2668
Kingman/Dolan Springs 06:45:52 -32.8 Dark Down 46.4 188.7 Up 06:30:52 - 07:00:52 2657
Mohave Valley 06:45:54 -32.9 Dark Down 46.7 188.0 Up 06:30:54 - 07:00:54 2650
Idyllwild 06:46:04 -33.5 Dark Down 48.1 185.1 Up 06:31:04 - 07:01:04 2627
Lake Havasu City 06:45:54 -33.4 Dark Down 47.1 188.4 Up 06:30:54 - 07:00:54 2611
Parker 06:45:54 -33.7 Dark Down 47.4 188.5 Up 06:30:54 - 07:00:54 2582
Blythe 06:45:56 -34.1 Dark Down 48.0 188.2 Up 06:30:56 - 07:00:56 2550
Calipatria 06:46:00 -34.4 Dark Down 48.6 186.9 Up 06:31:00 - 07:01:00 2540
Yuma 06:45:57 -35.0 Dark Down 48.9 188.3 Up 06:30:57 - 07:00:57 2477
George/Scottsdale 06:45:45 -34.6 Dark Down 47.5 192.1 Up 06:30:45 - 07:00:45 2469

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, (2026/07/21 06:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 36.35  43
Nunki          18:55:15.9 -26:17:49  2.0 18.50  76
Eps Sct        18:43:31.3 -08:16:31  4.9  0.49  76
PPM 202030     18:41:30.5 -08:31:29  8.5  0.45  76
PPM 202035     18:41:38.8 -08:03:16  9.3  0.03  76
10JG210        18:41:43.8 -08:04:32 15.5        76
Positions are for J2000

Event circumstances last updated at 2019/08/06 22:50:19 UT

Marc W. Buie, Southwest Research Institute

RECON