RECON: TNO occultation with 04VV130

Event between 04VV130 and star GA1300:03111766 with event index number of 1549965

Geocentric closest approach at 2025/12/14 06:02:16 UTC

J2000 position of star is 05:47:20.9 +40:05:35
Equinox of date position of star is 05:48:47.2 +40:05:57
Stellar brightness G=14.4, use SENSEUP=128
Star is 112 degrees from the moon. Moon is 28% illuminated.
TNO apparent brightness V=25.1

[RECON map]
TNO is 32.2 AU from the Sun and 31.3 AU from the Earth.
The TNO is moving 24.8 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 331 seconds.
The 1-sigma cross-track error in the shadow position is 3155 km.
The sky-plane scale is 22665.3 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=188.8 km assuming a 5% albedo -- 2.4 sec chord
Diameter=77.1 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04VV130, (2025/12/14 06:02UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:54.3 +27:57:41  1.1 27.07  86
34Bet Aur      06:01:26.0 +44:56:50  1.9  5.35 109
PPM 070954     05:54:28.1 +39:34:43  6.5  1.14 111
PPM 048463     05:50:46.5 +40:10:20  8.4  0.32 111
04VV130        05:49:09.8 +40:06:02 14.4       111
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 2.7 sigma about the mid-time.
The median site spacing is 24.3 km RECON observability=1.0 and success probability=8.3%
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 06:03:49 -55.8 Dark Down 65.5 102.1 Up 05:48:49 - 06:18:49 6496
Kelowna 06:03:50 -55.9 Dark Down 65.5 101.1 Up 05:48:50 - 06:18:50 6458
Peachland 06:03:51 -55.9 Dark Down 65.3 100.5 Up 05:48:51 - 06:18:51 6452
Summerland 06:03:51 -56.0 Dark Down 65.4 100.3 Up 05:48:51 - 06:18:51 6435
Penticton 06:03:51 -56.1 Dark Down 65.5 100.3 Up 05:48:51 - 06:18:51 6426
Victoria 06:04:02 -54.8 Dark Down 63.1 94.6 Up 05:49:02 - 06:19:02 6403
Oliver 06:03:51 -56.4 Dark Down 65.5 99.5 Up 05:48:51 - 06:18:51 6389
Anarchist Mountain Observatory 06:03:52 -56.6 Dark Down 65.7 99.4 Up 05:48:52 - 06:18:52 6367
Tonasket 06:03:52 -56.7 Dark Down 65.7 98.6 Up 05:48:52 - 06:18:52 6336
Okanogan 06:03:53 -56.9 Dark Down 65.6 97.7 Up 05:48:53 - 06:18:53 6304
Brewster 06:03:54 -56.9 Dark Down 65.6 97.0 Up 05:48:54 - 06:18:54 6279
Manson/Chelan 06:03:54 -56.9 Dark Down 65.3 96.2 Up 05:48:54 - 06:18:54 6265
Entiat 06:03:55 -57.0 Dark Down 65.3 95.6 Up 05:48:55 - 06:18:55 6244
Wenatchee 06:03:56 -57.1 Dark Down 65.3 95.0 Up 05:48:56 - 06:18:56 6219
Ellensburg 06:03:57 -57.2 Dark Down 65.2 93.9 Up 05:48:57 - 06:18:57 6180
Yakima 06:03:58 -57.4 Dark Down 65.2 93.0 Up 05:48:58 - 06:18:58 6138
Toppenish/White Swan 06:03:58 -57.7 Dark Down 65.3 92.7 Up 05:48:58 - 06:18:58 6112
Pasco 06:03:55 -58.4 Dark Down 66.2 93.4 Up 05:48:55 - 06:18:55 6071
Goldendale 06:04:00 -57.8 Dark Down 65.0 91.2 Up 05:49:00 - 06:19:00 6063
The Dalles 06:04:01 -57.7 Dark Down 64.8 90.4 Up 05:49:01 - 06:19:01 6047
PNWRO 06:03:54 -58.7 Dark Down 66.3 93.1 Up 05:48:54 - 06:18:54 6041
Maupin 06:04:01 -58.0 Dark Down 64.9 89.6 Up 05:49:01 - 06:19:01 6001
Sisters 06:04:03 -58.2 Dark Down 64.5 87.4 Up 05:49:03 - 06:19:03 5920
Redmond 06:04:03 -58.4 Dark Down 64.8 87.6 Up 05:49:03 - 06:19:03 5908
Bend 06:04:03 -58.4 Dark Down 64.7 87.1 Up 05:49:03 - 06:19:03 5888
Oregon Observatory 06:04:05 -58.4 Dark Down 64.6 86.7 Up 05:49:05 - 06:19:05 5873
La Pine/Gilchrist 06:04:04 -58.5 Dark Down 64.5 86.2 Up 05:49:04 - 06:19:04 5853
North Lake 06:04:03 -59.1 Dark Down 64.9 85.6 Up 05:49:03 - 06:19:03 5793
Paisley 06:04:04 -59.6 Dark Down 65.1 84.6 Up 05:49:04 - 06:19:04 5726
Klamath Falls 06:04:07 -59.1 Dark Down 64.2 83.0 Up 05:49:07 - 06:19:07 5706
Lakeview 06:04:03 -60.0 Dark Down 65.2 83.6 Up 05:49:03 - 06:19:03 5668
Cedarville 06:04:03 -60.4 Dark Down 65.3 82.3 Up 05:49:03 - 06:19:03 5594
Fall River/Burney 06:04:08 -59.9 Dark Down 64.3 80.8 Up 05:49:08 - 06:19:08 5572
Susanville 06:04:06 -60.7 Dark Down 64.7 79.8 Up 05:49:06 - 06:19:06 5487
Greenville 06:04:08 -60.6 Dark Down 64.5 79.1 Up 05:49:08 - 06:19:08 5465
Gimple 06:04:07 -60.7 Dark Down 64.5 79.1 Up 05:49:07 - 06:19:07 5462
Quincy 06:04:08 -60.7 Dark Down 64.4 78.7 Up 05:49:08 - 06:19:08 5443
Portola 06:04:06 -61.1 Dark Down 64.8 78.6 Up 05:49:06 - 06:19:06 5418
Reno 06:04:05 -61.6 Dark Down 65.2 78.2 Up 05:49:05 - 06:19:05 5374
Carson City 06:04:05 -61.8 Dark Down 65.1 77.5 Up 05:49:05 - 06:19:05 5335
Gardnerville 06:04:06 -61.9 Dark Down 65.1 77.0 Up 05:49:06 - 06:19:06 5308
Yerington 06:04:03 -62.3 Dark Down 65.6 77.2 Up 05:49:03 - 06:19:03 5299
Hawthorne 06:04:03 -62.9 Dark Down 65.9 76.3 Up 05:49:03 - 06:19:03 5237
Lee Vining 06:04:05 -62.8 Dark Down 65.4 75.0 Up 05:49:05 - 06:19:05 5188
Niwot 06:03:18 -69.9 Dark Down 76.2 84.2 Up 05:48:18 - 06:18:18 5182
SwRI 06:03:18 -69.9 Dark Down 76.2 83.8 Up 05:48:18 - 06:18:18 5171
Tonopah 06:03:59 -64.1 Dark Down 66.8 75.6 Up 05:48:59 - 06:18:59 5155
Bishop 06:04:03 -63.6 Dark Down 65.7 73.9 Up 05:49:03 - 06:19:03 5107
Beatty 06:03:58 -64.9 Dark Down 66.9 73.0 Up 05:48:58 - 06:18:58 5021
Indian Springs 06:03:55 -65.9 Dark Down 67.6 72.3 Up 05:48:55 - 06:18:55 4962
CPSLO 06:04:12 -62.7 Dark Down 63.4 69.6 Up 05:49:12 - 06:19:12 4943
Henderson 06:03:54 -66.6 Dark Down 67.9 71.0 Up 05:48:54 - 06:18:54 4890
Searchlight/Boulder City 06:03:54 -66.9 Dark Down 67.8 69.7 Up 05:48:54 - 06:18:54 4827
Patrick 06:03:50 -67.7 Dark Down 68.6 69.4 Up 05:48:50 - 06:18:50 4800
Laughlin/Bullhead City 06:03:53 -67.3 Dark Down 67.9 69.0 Up 05:48:53 - 06:18:53 4788
Kingman/Dolan Springs 06:03:51 -67.6 Dark Down 68.3 68.9 Up 05:48:51 - 06:18:51 4779
Wildwood 06:04:07 -64.6 Dark Down 64.5 67.2 Up 05:49:07 - 06:19:07 4762
Mohave Valley 06:03:53 -67.4 Dark Down 67.8 68.3 Up 05:48:53 - 06:18:53 4758
DCO 06:03:48 -68.3 Dark Down 69.0 68.6 Up 05:48:48 - 06:18:48 4753
Lake Havasu City 06:03:52 -67.7 Dark Down 67.9 67.4 Up 05:48:52 - 06:18:52 4710
Idyllwild 06:04:01 -66.2 Dark Down 65.8 66.2 Up 05:49:01 - 06:19:01 4679
Parker 06:03:53 -67.9 Dark Down 67.8 66.6 Up 05:48:53 - 06:18:53 4671
Blythe 06:03:54 -67.9 Dark Down 67.3 65.5 Up 05:48:54 - 06:18:54 4621
Calipatria 06:03:58 -67.4 Dark Down 66.4 64.7 Up 05:48:58 - 06:18:58 4588
George/Scottsdale 06:03:45 -69.9 Dark Down 69.4 64.8 Up 05:48:45 - 06:18:45 4578
Yuma 06:03:55 -68.2 Dark Down 66.9 63.5 Up 05:48:55 - 06:18:55 4522

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 04VV130, (2025/12/14 06:02UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 27.07  86
34Bet Aur      05:59:31.6 +44:56:51  1.9  5.35 109
PPM 070954     05:52:39.6 +39:34:29  6.5  1.14 111
PPM 048463     05:48:57.5 +40:09:57  8.4  0.32 111
04VV130        05:47:20.9 +40:05:35 14.4       112
Positions are for J2000

Event circumstances last updated at 2020/07/21 21:03:30 UT

Marc W. Buie, Southwest Research Institute

RECON