RECON: TNO occultation with 04VZ130

Event between 04VZ130 and star GA1220:02489548 with event index number of 1742306

Geocentric closest approach at 2026/12/04 05:00:26 UTC

J2000 position of star is 06:07:18.7 +32:43:07
Equinox of date position of star is 06:08:39.6 +32:42:52
Stellar brightness G=13.9, use SENSEUP=64
Star is 107 degrees from the moon. Moon is 21% illuminated.
TNO apparent brightness V=25.4

[RECON map]
TNO is 34.2 AU from the Sun and 33.3 AU from the Earth.
The TNO is moving 23.4 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 1043 seconds.
The 1-sigma cross-track error in the shadow position is 3166 km.
The sky-plane scale is 24172.6 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=100.0 km assuming a 5% albedo -- 2.6 sec chord
Diameter=40.8 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04VZ130, (2026/12/04 05:00UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:57.9 +27:57:32  1.1 21.60  85
Alnath         05:27:59.8 +28:37:40  1.6  9.73 115
PPM 071196     06:07:20.7 +33:35:42  6.1  0.95 107
PPM 071236     06:08:56.7 +32:11:41  8.5  0.52 106
PPM 071231     06:08:51.3 +33:03:03  9.5  0.34 107
PPM 071227     06:08:38.2 +32:38:16 11.1  0.12 107
04VZ130        06:09:04.6 +32:42:47 13.9       106
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 0.9 sigma about the mid-time.
The median site spacing is 21.3 km RECON observability=1.0 and success probability=5.6%
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 05:03:17 -47.5 Dark Down 41.7 86.6 Up 04:48:17 - 05:18:17 7499
Victoria 05:03:28 -45.8 Dark Down 38.9 82.2 Up 04:48:28 - 05:18:28 7475
Kelowna 05:03:18 -47.6 Dark Down 41.6 86.1 Up 04:48:18 - 05:18:18 7469
Peachland 05:03:19 -47.5 Dark Down 41.4 85.8 Up 04:48:19 - 05:18:19 7468
Summerland 05:03:19 -47.6 Dark Down 41.5 85.7 Up 04:48:19 - 05:18:19 7452
Penticton 05:03:19 -47.7 Dark Down 41.5 85.7 Up 04:48:19 - 05:18:19 7442
Oliver 05:03:20 -47.8 Dark Down 41.5 85.4 Up 04:48:20 - 05:18:20 7410
Anarchist Mountain Observatory 05:03:20 -48.0 Dark Down 41.6 85.4 Up 04:48:20 - 05:18:20 7389
Tonasket 05:03:21 -48.1 Dark Down 41.6 85.1 Up 04:48:21 - 05:18:21 7363
Okanogan 05:03:22 -48.2 Dark Down 41.4 84.7 Up 04:48:22 - 05:18:22 7337
Brewster 05:03:24 -48.2 Dark Down 41.3 84.3 Up 04:48:24 - 05:18:24 7319
Manson/Chelan 05:03:25 -48.0 Dark Down 41.0 83.9 Up 04:48:25 - 05:18:25 7312
Entiat 05:03:25 -48.1 Dark Down 40.9 83.7 Up 04:48:25 - 05:18:25 7294
Wenatchee 05:03:26 -48.1 Dark Down 40.8 83.4 Up 04:48:26 - 05:18:26 7274
Ellensburg 05:03:28 -48.1 Dark Down 40.7 82.9 Up 04:48:28 - 05:18:28 7244
Yakima 05:03:29 -48.2 Dark Down 40.6 82.5 Up 04:48:29 - 05:18:29 7207
Toppenish/White Swan 05:03:29 -48.4 Dark Down 40.7 82.5 Up 04:48:29 - 05:18:29 7182
Goldendale 05:03:31 -48.4 Dark Down 40.3 81.7 Up 04:48:31 - 05:18:31 7145
The Dalles 05:03:33 -48.2 Dark Down 40.0 81.3 Up 04:48:33 - 05:18:33 7137
Pasco 05:03:27 -49.3 Dark Down 41.5 83.2 Up 04:48:27 - 05:18:27 7129
PNWRO 05:03:28 -49.5 Dark Down 41.7 83.1 Up 04:48:28 - 05:18:28 7098
Maupin 05:03:33 -48.4 Dark Down 40.1 81.0 Up 04:48:33 - 05:18:33 7095
Sisters 05:03:36 -48.4 Dark Down 39.6 80.0 Up 04:48:36 - 05:18:36 7031
Redmond 05:03:36 -48.6 Dark Down 39.8 80.2 Up 04:48:36 - 05:18:36 7014
Bend 05:03:37 -48.6 Dark Down 39.7 80.0 Up 04:48:37 - 05:18:37 6999
Oregon Observatory 05:03:37 -48.6 Dark Down 39.6 79.8 Up 04:48:37 - 05:18:37 6988
La Pine/Gilchrist 05:03:39 -48.6 Dark Down 39.5 79.6 Up 04:48:39 - 05:18:39 6971
North Lake 05:03:38 -49.1 Dark Down 39.9 79.6 Up 04:48:38 - 05:18:38 6909
Klamath Falls 05:03:42 -48.8 Dark Down 39.0 78.2 Up 04:48:42 - 05:18:42 6845
Paisley 05:03:39 -49.6 Dark Down 40.0 79.3 Up 04:48:39 - 05:18:39 6845
Lakeview 05:03:40 -49.8 Dark Down 40.1 79.0 Up 04:48:40 - 05:18:40 6790
Cedarville 05:03:41 -50.1 Dark Down 40.1 78.6 Up 04:48:41 - 05:18:41 6722
Fall River/Burney 05:03:44 -49.4 Dark Down 39.1 77.5 Up 04:48:44 - 05:18:44 6720
Susanville 05:03:44 -50.1 Dark Down 39.5 77.4 Up 04:48:44 - 05:18:44 6633
Greenville 05:03:45 -49.9 Dark Down 39.2 77.0 Up 04:48:45 - 05:18:45 6618
Gimple 05:03:45 -50.0 Dark Down 39.3 77.1 Up 04:48:45 - 05:18:45 6614
Quincy 05:03:46 -50.0 Dark Down 39.2 76.9 Up 04:48:46 - 05:18:46 6598
Portola 05:03:45 -50.4 Dark Down 39.5 77.0 Up 04:48:45 - 05:18:45 6569
Reno 05:03:45 -50.9 Dark Down 39.9 77.1 Up 04:48:45 - 05:18:45 6519
Carson City 05:03:45 -51.0 Dark Down 39.9 76.8 Up 04:48:45 - 05:18:45 6484
Gardnerville 05:03:46 -51.1 Dark Down 39.9 76.7 Up 04:48:46 - 05:18:46 6459
Yerington 05:03:45 -51.6 Dark Down 40.3 77.0 Up 04:48:45 - 05:18:45 6442
Hawthorne 05:03:44 -52.1 Dark Down 40.6 76.8 Up 04:48:44 - 05:18:44 6377
Lee Vining 05:03:47 -51.8 Dark Down 40.1 76.2 Up 04:48:47 - 05:18:47 6341
Tonopah 05:03:43 -53.3 Dark Down 41.6 77.1 Up 04:48:43 - 05:18:43 6281
Bishop 05:03:47 -52.5 Dark Down 40.5 76.0 Up 04:48:47 - 05:18:47 6255
Beatty 05:03:44 -53.9 Dark Down 41.7 76.3 Up 04:48:44 - 05:18:44 6150
CPSLO 05:03:55 -51.1 Dark Down 38.2 73.4 Up 04:48:55 - 05:18:55 6140
Niwot 05:03:11 -61.1 Dark Down 51.0 85.3 Up 04:48:11 - 05:18:11 6103
SwRI 05:03:11 -61.1 Dark Down 50.9 85.1 Up 04:48:11 - 05:18:11 6095
Indian Springs 05:03:42 -54.8 Dark Down 42.4 76.5 Up 04:48:42 - 05:18:42 6079
Henderson 05:03:42 -55.5 Dark Down 42.8 76.3 Up 04:48:42 - 05:18:42 6001
Searchlight/Boulder City 05:03:43 -55.6 Dark Down 42.8 75.8 Up 04:48:43 - 05:18:43 5941
Wildwood 05:03:54 -52.9 Dark Down 39.5 73.3 Up 04:48:54 - 05:18:54 5941
Laughlin/Bullhead City 05:03:42 -56.0 Dark Down 43.0 75.7 Up 04:48:42 - 05:18:42 5899
Patrick 05:03:41 -56.5 Dark Down 43.6 76.2 Up 04:48:41 - 05:18:41 5898
Kingman/Dolan Springs 05:03:42 -56.4 Dark Down 43.4 75.9 Up 04:48:42 - 05:18:42 5883
Mohave Valley 05:03:43 -56.0 Dark Down 42.9 75.4 Up 04:48:43 - 05:18:43 5871
DCO 05:03:40 -57.1 Dark Down 44.1 76.2 Up 04:48:40 - 05:18:40 5843
Idyllwild 05:03:50 -54.5 Dark Down 40.9 73.7 Up 04:48:50 - 05:18:50 5833
Lake Havasu City 05:03:44 -56.3 Dark Down 43.0 75.2 Up 04:48:44 - 05:18:44 5822
Parker 05:03:44 -56.4 Dark Down 42.9 74.9 Up 04:48:44 - 05:18:44 5785
Blythe 05:03:45 -56.3 Dark Down 42.6 74.3 Up 04:48:45 - 05:18:45 5743
Calipatria 05:03:48 -55.6 Dark Down 41.7 73.5 Up 04:48:48 - 05:18:48 5728
George/Scottsdale 05:03:39 -58.5 Dark Down 44.8 75.3 Up 04:48:39 - 05:18:39 5656
Yuma 05:03:47 -56.4 Dark Down 42.3 73.5 Up 04:48:47 - 05:18:47 5651

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 04VZ130, (2026/12/04 05:00UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 21.60  85
Alnath         05:26:17.5 +28:36:23  1.6  9.73 115
PPM 071196     06:05:34.0 +33:35:57  6.1  0.95 107
PPM 071236     06:07:11.3 +32:12:00  8.5  0.52 106
PPM 071231     06:07:05.2 +33:03:21  9.5  0.34 107
PPM 071227     06:06:52.4 +32:38:34 11.1  0.12 107
04VZ130        06:07:18.7 +32:43:07 13.9       106
Positions are for J2000

Event circumstances last updated at 2020/07/26 21:36:41 UT

Marc W. Buie, Southwest Research Institute

RECON