RECON: TNO occultation with 13ME14

Event between 13ME14 and star GA1060:17811107 with event index number of 2068456

Geocentric closest approach at 2025/08/25 07:48:03 UTC

J2000 position of star is 22:14:41.6 +17:29:24
Equinox of date position of star is 22:15:43.5 +17:35:49
Stellar brightness G=13.6, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 151 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=22.9

[RECON map]
TNO is 22.8 AU from the Sun and 21.9 AU from the Earth.
The TNO is moving 23.6 km/sec on the sky relative to the star, or, 5.3 arcsec/hr.
The 1-sigma error in the time of the event is 155 seconds.
The 1-sigma cross-track error in the shadow position is 4494 km.
The sky-plane scale is 15899.8 km/arcsec.

The TNO has an absolute magnitude Hv=9.3
Diameter=82.0 km assuming a 5% albedo -- 3.5 sec chord
Diameter=33.5 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 13ME14, (2025/08/25 07:48UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:18.4 +45:22:23  1.3 33.92 119
Markab         23:06:02.4 +15:20:38  2.5 12.22 161
PPM 141171     22:13:05.7 +16:10:04  6.5  1.60 151
PPM 141287     22:18:55.1 +17:32:38  8.2  0.72 152
PPM 141219     22:15:57.2 +17:53:51  9.3  0.28 151
13ME14         22:15:55.7 +17:37:05 13.6       151
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 25.5 km RECON observability=1.0 and success probability=8.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 07:47:46 -29.1 Dark Down 57.2 176.1 Up 07:34:21 - 08:01:10 6091
Kelowna 07:47:47 -29.5 Dark Down 57.6 175.8 Up 07:34:22 - 08:01:11 6058
Peachland 07:47:48 -29.6 Dark Down 57.7 175.3 Up 07:34:23 - 08:01:12 6051
Summerland 07:47:47 -29.7 Dark Down 57.8 175.4 Up 07:34:23 - 08:01:12 6036
Penticton 07:47:47 -29.8 Dark Down 57.9 175.6 Up 07:34:22 - 08:01:11 6029
Oliver 07:47:47 -30.1 Dark Down 58.2 175.6 Up 07:34:23 - 08:01:12 5996
Victoria 07:48:00 -30.5 Dark Down 58.6 168.5 Up 07:34:35 - 08:01:24 5991
Anarchist Mountain Observatory 07:47:47 -30.3 Dark Down 58.4 175.9 Up 07:34:22 - 08:01:11 5978
Tonasket 07:47:47 -30.6 Dark Down 58.7 175.7 Up 07:34:23 - 08:01:12 5950
Okanogan 07:47:48 -30.9 Dark Down 59.1 175.4 Up 07:34:24 - 08:01:13 5921
Brewster 07:47:50 -31.2 Dark Down 59.3 175.0 Up 07:34:25 - 08:01:14 5898
Manson/Chelan 07:47:50 -31.4 Dark Down 59.5 174.3 Up 07:34:26 - 08:01:15 5884
Wenatchee 07:47:52 -31.9 Dark Down 60.0 173.9 Up 07:34:27 - 08:01:16 5842
Ellensburg 07:47:52 -32.3 Dark Down 60.4 173.4 Up 07:34:28 - 08:01:17 5806
Yakima 07:47:53 -32.7 Dark Down 60.8 173.3 Up 07:34:29 - 08:01:18 5767
Toppenish/White Swan 07:47:52 -32.9 Dark Down 61.0 173.6 Up 07:34:28 - 08:01:17 5744
Pasco 07:47:49 -33.1 Dark Down 61.2 176.0 Up 07:34:24 - 08:01:13 5714
Goldendale 07:47:54 -33.4 Dark Down 61.5 172.6 Up 07:34:30 - 08:01:19 5698
PNWRO 07:47:48 -33.3 Dark Down 61.4 176.4 Up 07:34:24 - 08:01:13 5688
The Dalles 07:47:56 -33.6 Dark Down 61.7 171.8 Up 07:34:31 - 08:01:20 5682
Maupin 07:47:56 -34.0 Dark Down 62.1 171.9 Up 07:34:32 - 08:01:21 5640
Sisters 07:47:58 -34.9 Dark Down 62.9 170.7 Up 07:34:34 - 08:01:23 5564
Redmond 07:47:57 -34.9 Dark Down 63.0 171.5 Up 07:34:32 - 08:01:21 5555
Bend 07:47:58 -35.1 Dark Down 63.2 171.2 Up 07:34:33 - 08:01:22 5536
Oregon Observatory 07:47:58 -35.3 Dark Down 63.4 170.8 Up 07:34:34 - 08:01:23 5522
La Pine/Gilchrist 07:47:58 -35.5 Dark Down 63.6 170.6 Up 07:34:34 - 08:01:23 5503
North Lake 07:47:57 -36.0 Dark Down 64.0 171.8 Up 07:34:32 - 08:01:21 5451
Chiloquin 07:48:01 -36.6 Dark Down 64.6 169.5 Up 07:34:36 - 08:01:25 5400
Paisley 07:47:56 -36.5 Dark Down 64.6 172.4 Up 07:34:32 - 08:01:21 5391
Klamath Falls 07:48:01 -36.9 Dark Down 65.0 169.5 Up 07:34:36 - 08:01:25 5365
Lakeview 07:47:56 -37.1 Dark Down 65.2 172.7 Up 07:34:32 - 08:01:21 5338
Cedarville 07:47:56 -37.7 Dark Down 65.8 172.9 Up 07:34:32 - 08:01:21 5271
Fall River/Burney 07:48:01 -38.1 Dark Down 66.2 170.0 Up 07:34:36 - 08:01:25 5242
Susanville 07:47:59 -38.8 Dark Down 66.9 171.5 Up 07:34:34 - 08:01:23 5167
Greenville 07:48:00 -39.1 Dark Down 67.1 170.7 Up 07:34:36 - 08:01:25 5144
Gimple 07:48:00 -39.1 Dark Down 67.1 170.9 Up 07:34:36 - 08:01:25 5143
Quincy 07:48:00 -39.3 Dark Down 67.3 170.6 Up 07:34:36 - 08:01:25 5124
Portola 07:47:59 -39.4 Dark Down 67.5 171.7 Up 07:34:34 - 08:01:23 5104
Reno 07:47:57 -39.7 Dark Down 67.8 173.2 Up 07:34:32 - 08:01:21 5066
Carson City 07:47:57 -40.1 Dark Down 68.2 173.2 Up 07:34:33 - 08:01:22 5030
Gardnerville 07:47:57 -40.3 Dark Down 68.4 173.2 Up 07:34:33 - 08:01:22 5004
Yerington 07:47:55 -40.3 Dark Down 68.4 174.7 Up 07:34:30 - 08:01:19 5000
Dunrhomin 07:47:04 -38.1 Dark Down 65.1 207.5 Up 07:33:40 - 08:00:29 4950
Hawthorne 07:47:53 -40.8 Dark Down 68.9 176.0 Up 07:34:29 - 08:01:18 4944
Lee Vining 07:47:56 -41.3 Dark Down 69.5 174.6 Up 07:34:31 - 08:01:20 4895
Tonopah 07:47:49 -41.3 Dark Down 69.4 179.7 Up 07:34:24 - 08:01:13 4874
Bishop 07:47:53 -42.0 Dark Down 70.1 176.5 Up 07:34:29 - 08:01:18 4822
Beatty 07:47:48 -42.5 Dark Down 70.6 181.0 Up 07:34:23 - 08:01:12 4748
Indian Springs 07:47:44 -42.8 Dark Down 70.9 184.1 Up 07:34:20 - 08:01:09 4698
CPSLO 07:48:03 -43.9 Dark Down 71.9 169.2 Up 07:34:39 - 08:01:28 4647
Henderson 07:47:42 -43.3 Dark Down 71.4 186.3 Up 07:34:17 - 08:01:06 4632
Patrick 07:47:38 -43.9 Dark Down 71.9 189.9 Up 07:34:14 - 08:01:03 4551
Laughlin/Bullhead City 07:47:41 -44.2 Dark Down 72.2 187.8 Up 07:34:16 - 08:01:05 4535
Kingman/Dolan Springs 07:47:39 -44.1 Dark Down 72.1 189.4 Up 07:34:14 - 08:01:03 4530
Mohave Valley 07:47:41 -44.4 Dark Down 72.5 188.0 Up 07:34:17 - 08:01:06 4506
Wildwood 07:47:57 -45.2 Dark Down 73.3 175.2 Up 07:34:33 - 08:01:22 4486
Lake Havasu City 07:47:41 -44.8 Dark Down 72.8 189.0 Up 07:34:16 - 08:01:05 4461
Parker 07:47:41 -45.2 Dark Down 73.2 189.2 Up 07:34:16 - 08:01:05 4423
Idyllwild 07:47:50 -45.6 Dark Down 73.8 181.4 Up 07:34:26 - 08:01:15 4418
Blythe 07:47:42 -45.7 Dark Down 73.7 188.5 Up 07:34:17 - 08:01:06 4372
George/Scottsdale 07:47:32 -45.5 Dark Down 73.1 197.3 Up 07:34:07 - 08:00:56 4344
Calipatria 07:47:46 -46.2 Dark Down 74.3 185.6 Up 07:34:21 - 08:01:10 4335
Yuma 07:47:43 -46.6 Dark Down 74.6 188.9 Up 07:34:19 - 08:01:08 4275

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 13ME14, (2025/08/25 07:48UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 33.92 119
Markab         23:04:45.8 +15:12:18  2.5 12.22 161
PPM 141171     22:11:51.3 +16:02:25  6.5  1.60 151
PPM 141287     22:17:40.9 +17:24:53  8.2  0.72 152
PPM 141219     22:14:43.2 +17:46:09  9.3  0.28 151
13ME14         22:14:41.6 +17:29:24 13.6       151
Positions are for J2000

Event circumstances last updated at 2021/06/12 23:56:25 UT

Marc W. Buie, Southwest Research Institute

RECON