RECON: TNO occultation with 511553

Event between (511553) 14UK225 and star GA1080:00322481 with event index number of 2242602

Geocentric closest approach at 2026/12/02 03:29:28 UTC

J2000 position of star is 03:04:39.7 +18:12:15
Equinox of date position of star is 03:05:55.4 +18:17:24
Stellar brightness G=12.4, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 122 degrees from the moon. Moon is 41% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 38.0 AU from the Sun and 37.1 AU from the Earth.
The TNO is moving 23.1 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 357 seconds.
The 1-sigma cross-track error in the shadow position is 2751 km.
The sky-plane scale is 26910.9 km/arcsec.

The TNO has an absolute magnitude Hv=7.6
Diameter=181.1 km assuming a 5% albedo -- 7.8 sec chord
Diameter=74.0 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 511553, (2026/12/02 03:29UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:28.1 +16:33:41  0.8 21.83 101
Menkar         03:03:41.4 +04:11:38  2.5 14.13 125
46Rho3Ari      02:57:57.5 +18:07:45  5.6  1.96 124
PPM 118805     03:07:18.7 +18:16:58  8.5  0.27 122
511553         03:06:11.0 +18:18:28 12.4       122
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 2.5 sigma about the mid-time.
The median site spacing is 21.0 km RECON observability=1.0 and success probability=15.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 03:30:30 -32.5 Dark Down 43.0 117.7 Up 03:15:30 - 03:45:30 2101
Victoria 03:30:37 -30.6 Dark Down 42.2 112.9 Up 03:15:37 - 03:45:37 2065
Peachland 03:30:32 -32.9 Dark Down 43.8 117.6 Up 03:15:32 - 03:45:32 2023
Kelowna 03:30:31 -33.1 Dark Down 43.9 118.0 Up 03:15:31 - 03:45:31 2021
Summerland 03:30:33 -33.0 Dark Down 43.9 117.6 Up 03:15:33 - 03:45:33 2010
Penticton 03:30:33 -33.1 Dark Down 44.0 117.6 Up 03:15:33 - 03:45:33 2002
Oliver 03:30:34 -33.1 Dark Down 44.2 117.3 Up 03:15:34 - 03:45:34 1979
Anarchist Mountain Observatory 03:30:35 -33.3 Dark Down 44.4 117.4 Up 03:15:35 - 03:45:35 1962
Tonasket 03:30:35 -33.2 Dark Down 44.5 117.1 Up 03:15:35 - 03:45:35 1943
Okanogan 03:30:37 -33.2 Dark Down 44.6 116.6 Up 03:15:37 - 03:45:37 1925
Brewster 03:30:37 -33.0 Dark Down 44.6 116.2 Up 03:15:37 - 03:45:37 1914
Manson/Chelan 03:30:37 -32.8 Dark Down 44.4 115.6 Up 03:15:37 - 03:45:37 1913
Wenatchee 03:30:37 -32.7 Dark Down 44.5 115.0 Up 03:15:37 - 03:45:37 1888
Ellensburg 03:30:37 -32.6 Dark Down 44.6 114.4 Up 03:15:37 - 03:45:37 1871
Yakima 03:30:37 -32.6 Dark Down 44.7 114.0 Up 03:15:37 - 03:45:37 1847
Toppenish/White Swan 03:30:37 -32.7 Dark Down 44.9 114.0 Up 03:15:37 - 03:45:37 1827
The Dalles 03:30:37 -32.2 Dark Down 44.7 112.5 Up 03:15:37 - 03:45:37 1814
Goldendale 03:30:37 -32.4 Dark Down 44.9 113.1 Up 03:15:37 - 03:45:37 1812
Maupin 03:30:37 -32.3 Dark Down 45.0 112.2 Up 03:15:37 - 03:45:37 1787
Sleaford 03:29:55 -40.9 Dark Down 49.4 135.7 Up 03:14:55 - 03:44:55 1766
PNWRO 03:30:37 -33.8 Dark Down 46.0 115.2 Up 03:15:37 - 03:45:37 1747
Sisters 03:30:55 -32.0 Dark Down 45.0 111.0 Up 03:15:55 - 03:45:55 1710
Bend 03:30:55 -32.1 Dark Down 45.3 111.0 Up 03:15:55 - 03:45:55 1684
Oregon Observatory 03:30:57 -32.1 Dark Down 45.2 110.8 Up 03:15:57 - 03:45:57 1676
North Lake 03:30:57 -32.4 Dark Down 45.8 110.7 Up 03:15:57 - 03:45:57 1611
Chiloquin 03:31:02 -31.7 Dark Down 45.4 109.1 Up 03:16:02 - 03:46:02 1596
Klamath Falls 03:31:03 -31.8 Dark Down 45.6 108.9 Up 03:16:03 - 03:46:03 1568
Lakeview 03:31:00 -32.8 Dark Down 46.6 110.2 Up 03:16:00 - 03:46:00 1514
Fall River/Burney 03:31:06 -32.0 Dark Down 46.2 108.1 Up 03:16:06 - 03:46:06 1466
Cedarville 03:31:01 -33.0 Dark Down 46.9 109.7 Up 03:16:01 - 03:46:01 1458
Susanville 03:31:06 -32.6 Dark Down 47.0 108.1 Up 03:16:06 - 03:46:06 1391
Greenville 03:31:08 -32.4 Dark Down 46.9 107.6 Up 03:16:08 - 03:46:08 1381
Gimple 03:31:08 -32.4 Dark Down 46.9 107.7 Up 03:16:08 - 03:46:08 1377
Quincy 03:31:09 -32.3 Dark Down 46.9 107.4 Up 03:16:09 - 03:46:09 1365
Portola 03:31:08 -32.7 Dark Down 47.3 107.7 Up 03:16:08 - 03:46:08 1338
Reno 03:31:07 -33.2 Dark Down 47.9 108.0 Up 03:16:07 - 03:46:07 1293
Carson City 03:31:08 -33.2 Dark Down 48.0 107.6 Up 03:16:08 - 03:46:08 1264
Gardnerville 03:31:09 -33.2 Dark Down 48.1 107.4 Up 03:16:09 - 03:46:09 1243
Yerington 03:31:08 -33.7 Dark Down 48.5 108.0 Up 03:16:08 - 03:46:08 1225
Hawthorne 03:31:08 -34.1 Dark Down 49.1 108.0 Up 03:16:08 - 03:46:08 1168
Lee Vining 03:31:11 -33.7 Dark Down 48.9 106.9 Up 03:16:11 - 03:46:11 1142
Tonopah 03:31:06 -35.2 Dark Down 50.3 108.7 Up 03:16:06 - 03:46:06 1078
Bishop 03:31:11 -34.2 Dark Down 49.6 106.9 Up 03:16:11 - 03:46:11 1066
Beatty 03:31:08 -35.5 Dark Down 51.0 107.8 Up 03:16:08 - 03:46:08 966
Indian Springs 03:31:06 -36.3 Dark Down 51.9 108.4 Up 03:16:06 - 03:46:06 897
Henderson 03:31:06 -36.9 Dark Down 52.6 108.4 Up 03:16:06 - 03:46:06 825
Dunrhomin 03:30:27 -44.2 Dark Down 57.5 124.6 Up 03:15:27 - 03:45:27 816
Wildwood 03:31:22 -33.9 Dark Down 50.3 103.0 Up 03:16:22 - 03:46:22 804
CU-SBO 03:30:28 -44.2 Dark Down 57.6 124.2 Up 03:15:28 - 03:45:28 798
Laughlin/Bullhead City 03:31:08 -37.2 Dark Down 53.2 107.7 Up 03:16:08 - 03:46:08 736
Patrick 03:31:05 -37.8 Dark Down 53.6 108.6 Up 03:16:05 - 03:46:05 729
Kingman/Dolan Springs 03:31:06 -37.6 Dark Down 53.6 108.2 Up 03:16:06 - 03:46:06 718
Mohave Valley 03:31:08 -37.2 Dark Down 53.3 107.3 Up 03:16:08 - 03:46:08 712
Idyllwild 03:31:18 -35.4 Dark Down 51.9 104.1 Up 03:16:18 - 03:46:18 699
Lake Havasu City 03:31:09 -37.4 Dark Down 53.6 107.0 Up 03:16:09 - 03:46:09 668
Parker 03:31:10 -37.4 Dark Down 53.7 106.6 Up 03:16:10 - 03:46:10 637
Calipatria 03:31:16 -36.3 Dark Down 53.0 104.3 Up 03:16:16 - 03:46:16 599
Yuma 03:31:15 -37.0 Dark Down 53.8 104.4 Up 03:16:15 - 03:46:15 525
George/Scottsdale 03:31:04 -39.4 Dark Down 55.7 108.2 Up 03:16:04 - 03:46:04 504

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 511553, (2026/12/02 03:29UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 21.83 101
Menkar         03:02:16.8 +04:05:21  2.5 14.13 125
46Rho3Ari      02:56:26.6 +18:01:19  5.6  1.96 124
PPM 118805     03:05:47.4 +18:10:47  8.5  0.27 122
511553         03:04:39.7 +18:12:15 12.4       122
Positions are for J2000

Event circumstances last updated at 2022/04/25 23:02:56 UT

Marc W. Buie, Southwest Research Institute

RECON