RECON: TNO occultation with 10MR116

Event between 10MR116 and star GA1180:00290352 with event index number of 1568908

Geocentric closest approach at 2026/10/06 03:32:08 UTC

J2000 position of star is 02:03:24.9 +28:10:31
Equinox of date position of star is 02:04:32.4 +28:16:08
Stellar brightness G=15.9, use SENSEUP=128
Star is 98 degrees from the moon. Moon is 22% illuminated.
TNO apparent brightness V=23.1

[RECON map]
TNO is 42.8 AU from the Sun and 42.0 AU from the Earth.
The TNO is moving 22.5 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 273 seconds.
The 1-sigma cross-track error in the shadow position is 4368 km.
The sky-plane scale is 30433.5 km/arcsec.

The TNO has an absolute magnitude Hv=6.7
Diameter=275.4 km assuming a 5% albedo -- 12.2 sec chord
Diameter=112.4 km assuming a 30% albedo -- 5.0 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 10MR116, (2026/10/06 03:32UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:27.5 +16:33:40  0.8 36.96  67
Hamal          02:08:41.2 +23:35:17  2.0  4.79  99
10 Ari         02:05:10.9 +26:03:48  6.1  2.24  98
PPM 091301     02:03:40.2 +28:31:42  7.6  0.36  98
PPM 091308     02:04:10.2 +28:14:14  9.5  0.18  98
10MR116        02:04:57.1 +28:18:11 15.9        97
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 3.3 sigma about the mid-time.
The median site spacing is 16.9 km RECON observability=1.0 and success probability=9.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 03:34:38 -21.2 Dark Down 26.3 76.6 Low 03:19:38 - 03:49:38 543
Summerland 03:34:39 -21.1 Dark Down 26.0 76.3 Low 03:19:39 - 03:49:39 536
Penticton 03:34:40 -21.2 Dark Down 26.1 76.3 Low 03:19:40 - 03:49:40 529
Okanagan Falls 03:34:40 -21.2 Dark Down 26.0 76.2 Low 03:19:40 - 03:49:40 519
Oliver 03:34:41 -21.3 Dark Down 26.0 76.2 Low 03:19:41 - 03:49:41 509
Anarchist Mountain Observatory 03:34:42 -21.5 Dark Down 26.1 76.2 Low 03:19:42 - 03:49:42 493
Oroville 03:34:42 -21.5 Dark Down 26.0 76.1 Low 03:19:42 - 03:49:42 491
Tonasket 03:34:43 -21.5 Dark Down 26.0 76.0 Low 03:19:43 - 03:49:43 478
Okanogan 03:34:44 -21.5 Dark Down 25.8 75.8 Low 03:19:44 - 03:49:44 465
Manson/Chelan 03:34:47 -21.3 Dark Down 25.3 75.2 Low 03:19:47 - 03:49:47 458
Brewster 03:34:46 -21.5 Dark Down 25.6 75.5 Low 03:19:46 - 03:49:46 457
Wenatchee 03:34:49 -21.4 Dark Down 25.1 74.9 Low 03:19:49 - 03:49:49 437
Ellensburg 03:34:50 -21.3 Dark Down 24.8 74.5 Low 03:19:50 - 03:49:50 421
Yakima 03:34:52 -21.4 Dark Down 24.7 74.3 Low 03:19:52 - 03:49:52 399
Toppenish/White Swan 03:34:53 -21.6 Dark Down 24.8 74.4 Low 03:19:53 - 03:49:53 380
The Dalles 03:34:56 -21.3 Dark Down 24.0 73.5 Low 03:19:56 - 03:49:56 363
Goldendale 03:34:55 -21.5 Dark Down 24.3 73.9 Low 03:19:55 - 03:49:55 363
Maupin 03:34:57 -21.5 Dark Down 24.0 73.4 Low 03:19:57 - 03:49:57 335
Pasco 03:34:53 -22.5 Dark Down 25.6 75.1 Low 03:19:53 - 03:49:53 325
Madras/Culver 03:35:00 -21.6 Dark Down 23.8 73.2 Low 03:20:00 - 03:50:00 303
PNWRO 03:34:54 -22.7 Dark Down 25.7 75.1 Low 03:19:54 - 03:49:54 301
Sisters 03:35:01 -21.4 Dark Down 23.4 72.8 Low 03:20:01 - 03:50:01 300
Redmond 03:35:01 -21.7 Dark Down 23.7 73.0 Low 03:20:01 - 03:50:01 283
Bend 03:35:02 -21.6 Dark Down 23.5 72.8 Low 03:20:02 - 03:50:02 276
Oregon Observatory 03:35:03 -21.6 Dark Down 23.4 72.7 Low 03:20:03 - 03:50:03 270
La Pine/Gilchrist 03:35:03 -21.6 Dark Down 23.3 72.5 Low 03:20:03 - 03:50:03 260
North Lake 03:35:05 -22.1 Dark Down 23.6 72.7 Low 03:20:05 - 03:50:05 209
Chiloquin 03:35:08 -21.6 Dark Down 22.7 71.9 Low 03:20:08 - 03:50:08 205
Klamath Falls 03:35:09 -21.8 Dark Down 22.7 71.8 Low 03:20:09 - 03:50:09 180
Paisley 03:35:07 -22.5 Dark Down 23.7 72.7 Low 03:20:07 - 03:50:07 160
Tulelake 03:35:10 -22.1 Dark Down 22.8 71.9 Low 03:20:10 - 03:50:10 151
Lakeview 03:35:09 -22.8 Dark Down 23.7 72.6 Low 03:20:09 - 03:50:09 120
Fall River/Burney 03:35:13 -22.3 Dark Down 22.6 71.6 Low 03:20:13 - 03:50:13 89
Cedarville 03:35:11 -23.1 Dark Down 23.6 72.5 Low 03:20:11 - 03:50:11 71
Susanville 03:35:16 -23.0 Dark Down 22.9 71.7 Low 03:20:16 - 03:50:16 17
Greenville 03:35:17 -22.9 Dark Down 22.6 71.5 Low 03:20:17 - 03:50:17 11
Gimple 03:35:17 -22.9 Dark Down 22.7 71.5 Low 03:20:17 - 03:50:17 7
Quincy 03:35:17 -22.9 Dark Down 22.6 71.4 Low 03:20:17 - 03:50:17 -3
Portola 03:35:18 -23.3 Dark Down 22.9 71.6 Low 03:20:18 - 03:50:18 -31
Reno 03:35:19 -23.9 Dark Down 23.3 71.8 Low 03:20:19 - 03:50:19 -76
Carson City 03:35:20 -24.0 Dark Down 23.2 71.7 Low 03:20:20 - 03:50:20 -101
Gardnerville 03:35:21 -24.1 Dark Down 23.1 71.6 Low 03:20:21 - 03:50:21 -120
Yerington 03:35:20 -24.5 Dark Down 23.6 72.0 Low 03:20:20 - 03:50:20 -141
Hawthorne 03:35:22 -25.0 Dark Down 23.8 72.1 Low 03:20:22 - 03:50:22 -196
Lee Vining 03:35:24 -24.8 Dark Down 23.3 71.6 Low 03:20:24 - 03:50:24 -215
Bishop 03:35:26 -25.5 Dark Down 23.7 71.7 Low 03:20:26 - 03:50:26 -288
Tonopah 03:35:23 -26.2 Dark Down 24.8 72.6 Low 03:20:23 - 03:50:23 -289
CPSLO 03:35:34 -24.2 Dark Down 21.3 69.8 Low 03:20:34 - 03:50:34 -337
Lone Pine 03:35:28 -26.0 Dark Down 23.7 71.5 Low 03:20:28 - 03:50:28 -357
Beatty 03:35:27 -26.9 Dark Down 24.8 72.3 Low 03:20:27 - 03:50:27 -392
Indian Springs 03:35:28 -27.8 Dark Down 25.5 72.7 Low 03:20:28 - 03:50:28 -464
Wildwood 03:35:37 -26.1 Dark Down 22.5 70.3 Low 03:20:37 - 03:50:37 -518
Henderson 03:35:29 -28.5 Dark Down 25.9 72.8 Low 03:20:29 - 03:50:29 -534
Searchlight/Boulder City 03:35:31 -28.7 Dark Down 25.8 72.5 Low 03:20:31 - 03:50:31 -580
Laughlin/Bullhead City 03:35:32 -29.1 Dark Down 25.9 72.6 Low 03:20:32 - 03:50:32 -618
Idyllwild 03:35:38 -27.7 Dark Down 23.8 71.0 Low 03:20:38 - 03:50:38 -631
Patrick 03:35:31 -29.5 Dark Down 26.6 73.0 Low 03:20:31 - 03:50:31 -631
Mohave Valley 03:35:33 -29.1 Dark Down 25.9 72.4 Low 03:20:33 - 03:50:33 -639
Kingman/Dolan Springs 03:35:31 -29.5 Dark Down 26.3 72.8 Low 03:20:31 - 03:50:31 -640
SwRI 03:35:07 -34.2 Dark Down 34.2 79.9 Up 03:20:07 - 03:50:07 -656
Lake Havasu City 03:35:34 -29.4 Dark Down 25.9 72.4 Low 03:20:34 - 03:50:34 -681
Parker 03:35:35 -29.6 Dark Down 25.9 72.2 Low 03:20:35 - 03:50:35 -709
Calipatria 03:35:39 -28.8 Dark Down 24.6 71.2 Low 03:20:39 - 03:50:39 -731
Blythe 03:35:37 -29.5 Dark Down 25.5 71.9 Low 03:20:37 - 03:50:37 -736
Yuma 03:35:40 -29.7 Dark Down 25.2 71.4 Low 03:20:40 - 03:50:40 -806
George/Scottsdale 03:35:35 -31.6 Dark Down 27.7 73.1 Low 03:20:35 - 03:50:35 -853

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 10MR116, (2026/10/06 03:32UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 36.96  67
Hamal          02:07:10.7 +23:27:42  2.0  4.79  99
10 Ari         02:03:39.6 +25:56:09  6.1  2.24  98
PPM 091301     02:02:08.0 +28:24:01  7.6  0.36  98
PPM 091308     02:02:38.1 +28:06:34  9.5  0.18  98
10MR116        02:03:24.9 +28:10:31 15.9        98
Positions are for J2000

Event circumstances last updated at 2019/08/06 22:56:43 UT

Marc W. Buie, Southwest Research Institute

RECON