RECON: TNO occultation with 534626

Event between (534626) 14UT224 and star GA1120:01130340 with event index number of 1614706

Geocentric closest approach at 2025/12/14 07:03:22 UTC

J2000 position of star is 05:22:22.6 +23:07:39
Equinox of date position of star is 05:23:33.6 +23:08:42
Stellar brightness G=14.9, use SENSEUP=128
Star is 118 degrees from the moon. Moon is 27% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 36.3 AU from the Sun and 35.3 AU from the Earth.
The TNO is moving 24.8 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 260 seconds.
The 1-sigma cross-track error in the shadow position is 1558 km.
The sky-plane scale is 25587.5 km/arcsec.

The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 11.6 sec chord
Diameter=117.7 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 534626, (2025/12/14 07:03UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:24.7 +16:33:35  0.8 12.77 129
Alnath         05:27:56.1 +28:37:38  1.6  5.55 117
109 Tau        05:20:50.3 +22:07:16  4.9  1.26 119
PPM 094385     05:29:30.0 +23:18:45  8.4  1.28 117
PPM 094343     05:26:25.0 +22:59:36  9.7  0.59 118
PPM 094301     05:23:32.9 +22:58:38 10.1  0.20 118
534626         05:23:57.0 +23:09:02 14.9       118
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 3.5 sigma about the mid-time.
The median site spacing is 24.3 km RECON observability=1.0 and success probability=30.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:03:49 -61.7 Dark Down 61.9 158.5 Up 06:48:49 - 07:18:49 175
Summerland 07:03:50 -61.9 Dark Down 62.1 157.8 Up 06:48:50 - 07:18:50 148
Penticton 07:03:49 -62.0 Dark Down 62.2 157.9 Up 06:48:49 - 07:18:49 141
Okanagan Falls 07:03:50 -62.2 Dark Down 62.4 157.7 Up 06:48:50 - 07:18:50 123
Oliver 07:03:50 -62.3 Dark Down 62.5 157.7 Up 06:48:50 - 07:18:50 106
Anarchist Mountain Observatory 07:03:49 -62.5 Dark Down 62.8 157.9 Up 06:48:49 - 07:18:49 88
Oroville 07:03:50 -62.6 Dark Down 62.8 157.7 Up 06:48:50 - 07:18:50 81
Tonasket 07:03:50 -62.8 Dark Down 63.0 157.5 Up 06:48:50 - 07:18:50 58
Okanogan 07:03:51 -63.0 Dark Down 63.3 157.0 Up 06:48:51 - 07:18:51 26
Brewster 07:03:51 -63.2 Dark Down 63.5 156.4 Up 06:48:51 - 07:18:51 1
Manson/Chelan 07:03:53 -63.3 Dark Down 63.6 155.5 Up 06:48:53 - 07:18:53 -16
Wenatchee 07:03:54 -63.7 Dark Down 64.0 154.8 Up 06:48:54 - 07:18:54 -62
Ellensburg 07:03:55 -64.0 Dark Down 64.3 154.0 Up 06:48:55 - 07:18:55 -101
Yakima 07:03:55 -64.3 Dark Down 64.6 153.6 Up 06:48:55 - 07:18:55 -142
Toppenish/White Swan 07:03:55 -64.6 Dark Down 64.9 153.7 Up 06:48:55 - 07:18:55 -165
Pasco 07:03:51 -65.1 Dark Down 65.4 156.2 Up 06:48:51 - 07:18:51 -190
Goldendale 07:03:56 -64.9 Dark Down 65.2 152.3 Up 06:48:56 - 07:18:56 -217
PNWRO 07:03:50 -65.4 Dark Down 65.6 156.5 Up 06:48:50 - 07:18:50 -217
George/Umatilla 07:03:52 -65.3 Dark Down 65.6 155.4 Up 06:48:52 - 07:18:52 -221
The Dalles 07:03:58 -65.0 Dark Down 65.3 151.3 Up 06:48:58 - 07:18:58 -236
Maupin 07:03:58 -65.4 Dark Down 65.7 151.1 Up 06:48:58 - 07:18:58 -279
Madras/Culver 07:03:58 -65.8 Dark Down 66.2 150.4 Up 06:48:58 - 07:18:58 -334
Sisters 07:04:00 -65.9 Dark Down 66.3 149.1 Up 06:49:00 - 07:19:00 -363
Redmond 07:03:59 -66.1 Dark Down 66.5 149.9 Up 06:48:59 - 07:18:59 -370
Bend 07:04:00 -66.2 Dark Down 66.6 149.4 Up 06:49:00 - 07:19:00 -391
Oregon Observatory 07:04:00 -66.3 Dark Down 66.7 148.9 Up 06:49:00 - 07:19:00 -407
La Pine/Gilchrist 07:04:00 -66.5 Dark Down 66.9 148.5 Up 06:49:00 - 07:19:00 -427
North Lake 07:03:59 -67.1 Dark Down 67.5 149.3 Up 06:48:59 - 07:18:59 -478
Chiloquin 07:04:02 -67.2 Dark Down 67.7 146.3 Up 06:49:02 - 07:19:02 -537
Paisley 07:03:58 -67.7 Dark Down 68.1 149.4 Up 06:48:58 - 07:18:58 -539
Klamath Falls 07:04:02 -67.5 Dark Down 68.0 146.1 Up 06:49:02 - 07:19:02 -574
Lakeview 07:03:58 -68.2 Dark Down 68.6 149.2 Up 06:48:58 - 07:18:58 -593
Tulelake 07:04:02 -67.9 Dark Down 68.3 146.3 Up 06:49:02 - 07:19:02 -605
Cedarville 07:03:58 -68.8 Dark Down 69.2 148.7 Up 06:48:58 - 07:18:58 -663
Fall River/Burney 07:04:02 -68.6 Dark Down 69.1 145.2 Up 06:49:02 - 07:19:02 -700
Susanville 07:04:00 -69.5 Dark Down 70.0 146.0 Up 06:49:00 - 07:19:00 -774
Greenville 07:04:02 -69.6 Dark Down 70.1 144.9 Up 06:49:02 - 07:19:02 -800
Gimple 07:04:01 -69.6 Dark Down 70.1 145.0 Up 06:49:01 - 07:19:01 -801
Quincy 07:04:02 -69.7 Dark Down 70.2 144.5 Up 06:49:02 - 07:19:02 -821
Portola 07:04:00 -70.0 Dark Down 70.5 145.5 Up 06:49:00 - 07:19:00 -840
Reno 07:03:58 -70.6 Dark Down 71.0 146.6 Up 06:48:58 - 07:18:58 -875
Carson City 07:03:59 -70.9 Dark Down 71.3 146.1 Up 06:48:59 - 07:18:59 -913
SwRI 07:03:09 -73.2 Dark Down 72.9 189.9 Up 06:48:09 - 07:18:09 -921
Gardnerville 07:03:59 -71.1 Dark Down 71.6 145.8 Up 06:48:59 - 07:18:59 -939
Yerington 07:03:56 -71.3 Dark Down 71.8 147.4 Up 06:48:56 - 07:18:56 -940
Hawthorne 07:03:55 -71.9 Dark Down 72.4 148.0 Up 06:48:55 - 07:18:55 -994
Lee Vining 07:03:57 -72.1 Dark Down 72.6 145.7 Up 06:48:57 - 07:18:57 -1049
Tonopah 07:03:50 -72.9 Dark Down 73.3 151.2 Up 06:48:50 - 07:18:50 -1058
Bishop 07:03:55 -73.0 Dark Down 73.5 146.6 Up 06:48:55 - 07:18:55 -1120
Beatty 07:03:50 -74.1 Dark Down 74.5 150.6 Up 06:48:50 - 07:18:50 -1185
Lone Pine 07:03:54 -73.7 Dark Down 74.2 146.1 Up 06:48:54 - 07:18:54 -1205
Indian Springs 07:03:46 -74.8 Dark Down 75.2 153.5 Up 06:48:46 - 07:18:46 -1230
Henderson 07:03:44 -75.6 Dark Down 75.9 154.9 Up 06:48:44 - 07:18:44 -1293
CPSLO 07:04:04 -73.3 Dark Down 73.9 136.1 Up 06:49:04 - 07:19:04 -1315
Searchlight/Boulder City 07:03:44 -76.1 Dark Down 76.5 154.1 Up 06:48:44 - 07:18:44 -1356
Patrick 07:03:40 -76.5 Dark Down 76.9 157.9 Up 06:48:40 - 07:18:40 -1370
Laughlin/Bullhead City 07:03:43 -76.5 Dark Down 76.9 154.8 Up 06:48:43 - 07:18:43 -1391
Kingman/Dolan Springs 07:03:41 -76.7 Dark Down 77.0 156.8 Up 06:48:41 - 07:18:41 -1393
Mohave Valley 07:03:43 -76.7 Dark Down 77.1 154.4 Up 06:48:43 - 07:18:43 -1420
Lake Havasu City 07:03:42 -77.2 Dark Down 77.6 154.5 Up 06:48:42 - 07:18:42 -1466
Wildwood 07:03:58 -75.3 Dark Down 76.0 138.8 Up 06:48:58 - 07:18:58 -1469
Parker 07:03:42 -77.5 Dark Down 77.9 154.0 Up 06:48:42 - 07:18:42 -1504
Idyllwild 07:03:51 -76.6 Dark Down 77.2 144.0 Up 06:48:51 - 07:18:51 -1527
Blythe 07:03:43 -77.8 Dark Down 78.2 151.6 Up 06:48:43 - 07:18:43 -1558
Calipatria 07:03:47 -77.7 Dark Down 78.3 146.7 Up 06:48:47 - 07:18:47 -1604
Yuma 07:03:44 -78.5 Dark Down 79.0 149.2 Up 06:48:44 - 07:18:44 -1658

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 534626, (2025/12/14 07:03UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 12.77 129
Alnath         05:26:17.5 +28:36:23  1.6  5.55 117
109 Tau        05:19:16.6 +22:05:46  4.9  1.26 119
PPM 094385     05:27:55.4 +23:17:34  8.4  1.28 117
PPM 094343     05:24:50.7 +22:58:19  9.7  0.59 118
PPM 094301     05:21:58.6 +22:57:14 10.1  0.20 118
534626         05:22:22.6 +23:07:39 14.9       118
Positions are for J2000

Event circumstances last updated at 2019/07/08 22:55:43 UT

Marc W. Buie, Southwest Research Institute

RECON