RECON: TNO occultation with 04VZ130

Event between 04VZ130 and star GA1220:02292830 with event index number of 1742189

Geocentric closest approach at 2026/01/04 08:56:33 UTC

J2000 position of star is 05:54:35.1 +32:30:17
Equinox of date position of star is 05:55:55.8 +32:30:26
Stellar brightness G=14.7, use SENSEUP=128
Star is 29 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=25.3

[RECON map]
TNO is 34.0 AU from the Sun and 33.0 AU from the Earth.
The TNO is moving 24.0 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 805 seconds.
The 1-sigma cross-track error in the shadow position is 3147 km.
The sky-plane scale is 23967.4 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=100.0 km assuming a 5% albedo -- 2.5 sec chord
Diameter=40.8 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04VZ130, (2026/01/04 08:57UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:25.0 +16:33:35  0.8 23.92  48
Alnath         05:27:56.3 +28:37:38  1.6  7.23  34
PPM 071002     05:56:40.4 +31:42:11  5.9  0.81  28
PPM 071039     05:58:58.6 +32:41:41  8.1  0.60  28
PPM 070991     05:56:10.2 +32:30:27  9.4  0.02  29
04VZ130        05:56:17.3 +32:30:28 14.7        28
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 1.1 sigma about the mid-time.
The median site spacing is 21.6 km RECON observability=1.0 and success probability=15.2%
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 08:55:07 -60.6 Dark Up 61.8 242.4 Up 08:40:07 - 09:10:07 22
Kelowna 08:55:07 -61.0 Dark Up 62.0 242.9 Up 08:40:07 - 09:10:07 -20
Peachland 08:55:07 -61.1 Dark Up 62.3 242.7 Up 08:40:07 - 09:10:07 -36
Summerland 08:55:07 -61.3 Dark Up 62.3 243.0 Up 08:40:07 - 09:10:07 -50
Penticton 08:55:06 -61.3 Dark Up 62.2 243.3 Up 08:40:06 - 09:10:06 -55
Oliver 08:55:06 -61.6 Dark Up 62.4 243.9 Up 08:40:06 - 09:10:06 -91
Anarchist Mountain Observatory 08:55:05 -61.7 Dark Up 62.4 244.4 Up 08:40:05 - 09:10:05 -105
Tonasket 08:55:05 -62.0 Dark Up 62.5 244.9 Up 08:40:05 - 09:10:05 -138
Okanogan 08:55:05 -62.3 Dark Up 62.8 245.3 Up 08:40:05 - 09:10:05 -175
Brewster 08:55:05 -62.6 Dark Up 63.0 245.5 Up 08:40:05 - 09:10:05 -206
Victoria 08:55:15 -63.2 Dark Up 64.9 239.8 Up 08:40:15 - 09:10:15 -221
Manson/Chelan 08:55:06 -62.9 Dark Up 63.3 245.4 Up 08:40:06 - 09:10:06 -234
Entiat 08:55:05 -63.2 Dark Up 63.5 245.7 Up 08:40:05 - 09:10:05 -258
Wenatchee 08:55:05 -63.4 Dark Up 63.6 246.0 Up 08:40:05 - 09:10:05 -286
Ellensburg 08:55:05 -63.9 Dark Up 63.9 246.5 Up 08:40:05 - 09:10:05 -332
Yakima 08:55:05 -64.2 Dark Up 64.1 247.3 Up 08:40:05 - 09:10:05 -375
Pasco 08:55:00 -64.1 Dark Up 63.3 249.7 Up 08:40:00 - 09:10:00 -384
Toppenish/White Swan 08:55:04 -64.4 Dark Up 64.1 247.9 Up 08:40:04 - 09:10:04 -394
PNWRO 08:54:59 -64.2 Dark Up 63.2 250.4 Up 08:39:59 - 09:09:59 -406
Goldendale 08:55:04 -65.0 Dark Up 64.5 248.4 Up 08:40:04 - 09:10:04 -459
The Dalles 08:55:05 -65.3 Dark Up 64.9 248.4 Up 08:40:05 - 09:10:05 -489
Maupin 08:55:04 -65.7 Dark Up 65.0 249.4 Up 08:40:04 - 09:10:04 -531
Redmond 08:55:03 -66.5 Dark Up 65.3 251.1 Up 08:40:03 - 09:10:03 -628
Sisters 08:55:05 -66.6 Dark Up 65.6 250.6 Up 08:40:05 - 09:10:05 -632
Bend 08:55:03 -66.7 Dark Up 65.5 251.4 Up 08:40:03 - 09:10:03 -653
Oregon Observatory 08:55:03 -66.9 Dark Up 65.6 251.6 Up 08:40:03 - 09:10:03 -673
Niwot 08:54:12 -61.2 Dark Up 54.3 271.8 Up 08:39:12 - 09:09:12 -682
SwRI 08:54:12 -61.3 Dark Up 54.4 271.9 Up 08:39:12 - 09:09:12 -695
La Pine/Gilchrist 08:55:04 -67.1 Dark Up 65.7 251.9 Up 08:40:04 - 09:10:04 -696
North Lake 08:55:01 -67.3 Dark Up 65.5 253.5 Up 08:40:01 - 09:10:01 -731
Paisley 08:54:59 -67.7 Dark Up 65.4 255.1 Up 08:39:59 - 09:09:59 -783
Lakeview 08:54:58 -68.0 Dark Up 65.3 256.3 Up 08:39:58 - 09:09:58 -833
Klamath Falls 08:55:03 -68.5 Dark Up 66.3 254.7 Up 08:40:03 - 09:10:03 -855
Cedarville 08:54:57 -68.5 Dark Up 65.4 257.9 Up 08:39:57 - 09:09:57 -899
Fall River/Burney 08:55:00 -69.4 Dark Up 66.4 257.7 Up 08:40:00 - 09:10:00 -973
Susanville 08:54:57 -69.7 Dark Up 65.9 259.9 Up 08:39:57 - 09:09:57 -1026
Gimple 08:54:57 -70.0 Dark Up 66.1 260.3 Up 08:39:57 - 09:09:57 -1060
Greenville 08:54:57 -70.0 Dark Up 66.2 260.2 Up 08:39:57 - 09:09:57 -1061
Quincy 08:54:57 -70.2 Dark Up 66.2 260.7 Up 08:39:57 - 09:09:57 -1083
Portola 08:54:55 -70.1 Dark Up 65.9 261.4 Up 08:39:55 - 09:09:55 -1087
Reno 08:54:53 -70.0 Dark Up 65.4 262.5 Up 08:39:53 - 09:09:53 -1103
Carson City 08:54:52 -70.3 Dark Up 65.5 263.3 Up 08:39:52 - 09:09:52 -1141
Yerington 08:54:50 -70.1 Dark Up 65.0 264.2 Up 08:39:50 - 09:09:50 -1149
Gardnerville 08:54:52 -70.5 Dark Up 65.5 263.9 Up 08:39:52 - 09:09:52 -1166
Hawthorne 08:54:48 -70.2 Dark Up 64.7 265.6 Up 08:39:48 - 09:09:48 -1187
Tonopah 08:54:43 -69.8 Dark Up 63.6 267.6 Up 08:39:43 - 09:09:43 -1206
Lee Vining 08:54:49 -70.9 Dark Up 65.1 266.5 Up 08:39:49 - 09:09:49 -1258
Bishop 08:54:46 -71.0 Dark Up 64.5 268.2 Up 08:39:46 - 09:09:46 -1306
Beatty 08:54:40 -70.4 Dark Up 63.3 270.2 Up 08:39:40 - 09:09:40 -1319
Indian Springs 08:54:36 -69.9 Dark Up 62.4 271.4 Up 08:39:36 - 09:09:36 -1329
Henderson 08:54:33 -69.8 Dark Up 61.8 272.8 Up 08:39:33 - 09:09:33 -1369
Patrick 08:54:29 -69.5 Dark Up 60.9 274.5 Up 08:39:29 - 09:09:29 -1407
DCO 08:54:27 -69.2 Dark Up 60.3 275.4 Up 08:39:27 - 09:09:27 -1422
Searchlight/Boulder City 08:54:33 -70.1 Dark Up 61.7 273.9 Up 08:39:33 - 09:09:33 -1428
Kingman/Dolan Springs 08:54:29 -69.7 Dark Up 61.0 274.8 Up 08:39:29 - 09:09:29 -1436
Laughlin/Bullhead City 08:54:31 -70.1 Dark Up 61.5 274.6 Up 08:39:31 - 09:09:31 -1451
Mohave Valley 08:54:31 -70.2 Dark Up 61.4 275.1 Up 08:39:31 - 09:09:31 -1480
Lake Havasu City 08:54:29 -70.3 Dark Up 61.2 275.9 Up 08:39:29 - 09:09:29 -1516
George/Scottsdale 08:54:20 -68.9 Dark Up 59.1 278.2 Up 08:39:20 - 09:09:20 -1534
Parker 08:54:29 -70.4 Dark Up 61.1 276.6 Up 08:39:29 - 09:09:29 -1553
CPSLO 08:54:51 -73.7 Dark Up 66.4 271.4 Up 08:39:51 - 09:09:51 -1574
Blythe 08:54:29 -70.9 Dark Up 61.3 277.4 Up 08:39:29 - 09:09:29 -1616
Idyllwild 08:54:36 -72.3 Dark Up 63.0 276.4 Up 08:39:36 - 09:09:36 -1656
Wildwood 08:54:43 -73.4 Dark Up 64.6 275.0 Up 08:39:43 - 09:09:43 -1661
Calipatria 08:54:31 -71.8 Dark Up 62.0 278.0 Up 08:39:31 - 09:09:31 -1692
Yuma 08:54:28 -71.4 Dark Up 61.2 279.1 Up 08:39:28 - 09:09:28 -1716

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, (2026/01/04 08:57UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 23.92  48
Alnath         05:26:17.5 +28:36:23  1.6  7.23  34
PPM 071002     05:54:58.9 +31:42:02  5.9  0.81  28
PPM 071039     05:57:16.3 +32:41:37  8.1  0.60  28
PPM 070991     05:54:28.1 +32:30:16  9.4  0.02  29
04VZ130        05:54:35.1 +32:30:17 14.7        29
Positions are for J2000

Event circumstances last updated at 2020/07/21 21:24:56 UT

Marc W. Buie, Southwest Research Institute

RECON