RECON: TNO occultation with 04VZ130

Event between 04VZ130 and star GA1220:02292830 with event index number of 1979155

Geocentric closest approach at 2026/01/04 08:59:04 UTC

J2000 position of star is 05:54:35.1 +32:30:17
Equinox of date position of star is 05:56:05.4 +32:30:27
Stellar brightness G=14.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 29 degrees from the moon. Moon is 99% illuminated.
Apparent brightness V=24.0

[RECON map]
Object is 34.0 AU from the Sun and 33.0 AU from the Earth.
Apparent velocity is 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 332 seconds.
The 1-sigma cross-track error in the shadow position is 1821 km.
The sky-plane scale is 23967.2 km/arcsec.

The object has an absolute magnitude Hv=8.7
Diameter=109.1 km assuming a 5% albedo -- 4.5 sec chord
Diameter=44.6 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04VZ130, (2026/01/04 08:53UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:25.0 +16:33:35  0.8 23.92  48
Alnath         05:27:56.3 +28:37:37  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 2.7 sigma about the mid-time.
The median site spacing is 29.8 km RECON observability=1.0 and success probability=12.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:57:09 -54.0 Dark Up 53.0 255.5 Up 08:42:09 - 09:12:09 -2635
Kamloops 08:57:40 -60.3 Dark Up 61.8 241.2 Up 08:42:40 - 09:12:40 -3065
Kelowna 08:57:36 -60.8 Dark Up 61.7 243.7 Up 08:42:36 - 09:12:36 -3132
Peachland 08:57:37 -61.0 Dark Up 61.9 243.5 Up 08:42:37 - 09:12:37 -3148
Summerland 08:57:37 -61.1 Dark Up 61.9 243.8 Up 08:42:37 - 09:12:37 -3162
Penticton 08:57:36 -61.1 Dark Up 61.9 244.1 Up 08:42:36 - 09:12:36 -3166
Oliver 08:57:35 -61.4 Dark Up 62.0 244.7 Up 08:42:35 - 09:12:35 -3202
Anarchist Mountain Observatory 08:57:35 -61.5 Dark Up 62.0 245.2 Up 08:42:35 - 09:12:35 -3216
Okanogan 08:57:34 -62.2 Dark Up 62.4 246.1 Up 08:42:34 - 09:12:34 -3286
Brewster 08:57:34 -62.5 Dark Up 62.6 246.3 Up 08:42:34 - 09:12:34 -3318
Victoria 08:57:45 -63.0 Dark Up 64.6 240.7 Up 08:42:45 - 09:12:45 -3334
Manson/Chelan 08:57:35 -62.8 Dark Up 62.9 246.2 Up 08:42:35 - 09:12:35 -3346
Wenatchee 08:57:34 -63.2 Dark Up 63.2 246.8 Up 08:42:34 - 09:12:34 -3397
Ellensburg 08:57:34 -63.7 Dark Up 63.5 247.3 Up 08:42:34 - 09:12:34 -3444
Yakima 08:57:34 -64.0 Dark Up 63.7 248.0 Up 08:42:34 - 09:12:34 -3486
Toppenish/White Swan 08:57:33 -64.2 Dark Up 63.7 248.7 Up 08:42:33 - 09:12:33 -3506
PNWRO 08:57:29 -64.0 Dark Up 62.8 251.1 Up 08:42:29 - 09:12:29 -3516
The Dalles 08:57:34 -65.1 Dark Up 64.5 249.2 Up 08:42:34 - 09:12:34 -3601
Maupin 08:57:34 -65.5 Dark Up 64.5 250.1 Up 08:42:34 - 09:12:34 -3643
Sisters 08:57:34 -66.4 Dark Up 65.2 251.3 Up 08:42:34 - 09:12:34 -3744
Bend 08:57:33 -66.5 Dark Up 65.1 252.1 Up 08:42:33 - 09:12:33 -3764
Dunrhomin 08:56:42 -60.7 Dark Up 53.9 272.0 Up 08:41:42 - 09:11:42 -3771
Oregon Observatory 08:57:33 -66.7 Dark Up 65.2 252.3 Up 08:42:33 - 09:12:33 -3784
Nikitin 08:56:41 -60.8 Dark Up 53.9 272.2 Up 08:41:41 - 09:11:41 -3790
CU-SBO 08:56:42 -60.9 Dark Up 53.9 272.3 Up 08:41:42 - 09:11:42 -3799
Chiloquin 08:57:33 -68.0 Dark Up 65.9 254.6 Up 08:42:33 - 09:12:33 -3931
Klamath Falls 08:57:32 -68.3 Dark Up 65.9 255.4 Up 08:42:32 - 09:12:32 -3966
Cedarville 08:57:26 -68.3 Dark Up 64.9 258.5 Up 08:42:26 - 09:12:26 -4009
Fall River/Burney 08:57:29 -69.2 Dark Up 65.9 258.4 Up 08:42:29 - 09:12:29 -4084
Gimple 08:57:26 -69.7 Dark Up 65.7 260.9 Up 08:42:26 - 09:12:26 -4170
Greenville 08:57:26 -69.7 Dark Up 65.7 260.8 Up 08:42:26 - 09:12:26 -4172
Quincy 08:57:26 -69.9 Dark Up 65.8 261.2 Up 08:42:26 - 09:12:26 -4193
Portola 08:57:24 -69.8 Dark Up 65.4 261.9 Up 08:42:24 - 09:12:24 -4197
Reno 08:57:23 -69.7 Dark Up 65.0 263.0 Up 08:42:23 - 09:12:23 -4213
Carson City 08:57:22 -70.0 Dark Up 65.0 263.8 Up 08:42:22 - 09:12:22 -4250
Yerington 08:57:19 -69.8 Dark Up 64.5 264.7 Up 08:42:19 - 09:12:19 -4258
Gardnerville 08:57:21 -70.2 Dark Up 65.0 264.4 Up 08:42:21 - 09:12:21 -4275
Hawthorne 08:57:17 -69.9 Dark Up 64.2 266.1 Up 08:42:17 - 09:12:17 -4296
Lee Vining 08:57:18 -70.6 Dark Up 64.6 266.9 Up 08:42:18 - 09:12:18 -4367
Bishop 08:57:15 -70.6 Dark Up 64.0 268.6 Up 08:42:15 - 09:12:15 -4415
Beatty 08:57:09 -70.0 Dark Up 62.8 270.6 Up 08:42:09 - 09:12:09 -4427
Patrick 08:56:58 -69.0 Dark Up 60.4 274.8 Up 08:41:58 - 09:11:58 -4514
Laughlin/Bullhead City 08:57:00 -69.7 Dark Up 60.9 274.9 Up 08:42:00 - 09:12:00 -4558
Lake Havasu City 08:56:59 -69.8 Dark Up 60.7 276.2 Up 08:41:59 - 09:11:59 -4623
George/Scottsdale 08:56:50 -68.4 Dark Up 58.6 278.4 Up 08:41:50 - 09:11:50 -4639
Idyllwild 08:57:05 -71.9 Dark Up 62.5 276.7 Up 08:42:05 - 09:12:05 -4763
Wildwood 08:57:12 -72.9 Dark Up 64.1 275.2 Up 08:42:12 - 09:12:12 -4769
Calipatria 08:57:01 -71.4 Dark Up 61.5 278.2 Up 08:42:01 - 09:12:01 -4799
Yuma 08:56:57 -70.9 Dark Up 60.7 279.3 Up 08:41:57 - 09:11:57 -4822

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 08:53UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 23.92  48
Alnath         05:26:17.6 +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 2022/12/25 03:29:02 UT

Marc W. Buie, Southwest Research Institute

RECON