RECON: TNO occultation with 04VZ130

Event between 04VZ130 and star GA1220:02489548 with event index number of 1979271

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

J2000 position of star is 06:07:18.7 +32:43:07
Equinox of date position of star is 06:08:49.1 +32:42:50
Stellar brightness G=13.9, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 107 degrees from the moon. Moon is 21% illuminated.
Apparent brightness V=24.1

[RECON map]
Object is 34.2 AU from the Sun and 33.3 AU from the Earth.
Apparent velocity is 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 457 seconds.
The 1-sigma cross-track error in the shadow position is 1989 km.
The sky-plane scale is 24172.4 km/arcsec.

The object has an absolute magnitude Hv=8.7
Diameter=109.1 km assuming a 5% albedo -- 4.7 sec chord
Diameter=44.6 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04VZ130, (2026/12/04 04:56UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:57.8 +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 2.0 sigma about the mid-time.
The median site spacing is 31.1 km RECON observability=1.0 and success probability=17.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 05:06:49 -47.2 Dark Down 41.7 86.8 Up 04:51:49 - 05:21:49 3627
Victoria 05:07:00 -46.3 Dark Down 39.5 82.8 Up 04:52:00 - 05:22:00 3531
Kelowna 05:06:50 -48.1 Dark Down 42.2 86.7 Up 04:51:50 - 05:21:50 3527
Peachland 05:06:51 -48.0 Dark Down 42.0 86.4 Up 04:51:51 - 05:21:51 3526
Summerland 05:06:51 -48.1 Dark Down 42.0 86.4 Up 04:51:51 - 05:21:51 3510
Penticton 05:06:51 -48.2 Dark Down 42.1 86.4 Up 04:51:51 - 05:21:51 3501
Oliver 05:06:52 -48.4 Dark Down 42.1 86.1 Up 04:51:52 - 05:21:52 3469
Anarchist Mountain Observatory 05:06:52 -48.6 Dark Down 42.2 86.1 Up 04:51:52 - 05:21:52 3447
Okanogan 05:06:54 -48.7 Dark Down 42.0 85.3 Up 04:51:54 - 05:21:54 3395
Sleaford 05:06:19 -53.7 Dark Down 50.5 100.0 Up 04:51:19 - 05:21:19 3379
Brewster 05:06:55 -48.7 Dark Down 41.9 84.9 Up 04:51:55 - 05:21:55 3377
Manson/Chelan 05:06:56 -48.6 Dark Down 41.6 84.5 Up 04:51:56 - 05:21:56 3369
Wenatchee 05:06:58 -48.6 Dark Down 41.4 84.0 Up 04:51:58 - 05:21:58 3331
Ellensburg 05:07:00 -48.7 Dark Down 41.3 83.5 Up 04:52:00 - 05:22:00 3301
Yakima 05:07:00 -48.8 Dark Down 41.2 83.1 Up 04:52:00 - 05:22:00 3264
Toppenish/White Swan 05:07:01 -49.0 Dark Down 41.3 83.0 Up 04:52:01 - 05:22:01 3238
The Dalles 05:07:04 -48.8 Dark Down 40.7 81.9 Up 04:52:04 - 05:22:04 3193
PNWRO 05:06:59 -50.1 Dark Down 42.3 83.7 Up 04:51:59 - 05:21:59 3155
Maupin 05:07:05 -49.0 Dark Down 40.7 81.6 Up 04:52:05 - 05:22:05 3150
Sisters 05:07:08 -49.0 Dark Down 40.2 80.5 Up 04:52:08 - 05:22:08 3086
Bend 05:07:08 -49.2 Dark Down 40.3 80.5 Up 04:52:08 - 05:22:08 3054
Oregon Observatory 05:07:09 -49.2 Dark Down 40.2 80.3 Up 04:52:09 - 05:22:09 3043
Chiloquin 05:07:13 -49.3 Dark Down 39.7 79.0 Up 04:52:13 - 05:22:13 2934
Klamath Falls 05:07:13 -49.4 Dark Down 39.7 78.7 Up 04:52:13 - 05:22:13 2899
Cedarville 05:07:12 -50.8 Dark Down 40.7 79.0 Up 04:52:12 - 05:22:12 2776
Fall River/Burney 05:07:16 -50.0 Dark Down 39.7 78.0 Up 04:52:16 - 05:22:16 2774
Greenville 05:07:17 -50.6 Dark Down 39.9 77.5 Up 04:52:17 - 05:22:17 2671
Gimple 05:07:17 -50.7 Dark Down 39.9 77.5 Up 04:52:17 - 05:22:17 2668
Quincy 05:07:17 -50.7 Dark Down 39.8 77.3 Up 04:52:17 - 05:22:17 2651
Portola 05:07:16 -51.0 Dark Down 40.2 77.5 Up 04:52:16 - 05:22:16 2622
Reno 05:07:16 -51.6 Dark Down 40.6 77.6 Up 04:52:16 - 05:22:16 2573
Carson City 05:07:17 -51.7 Dark Down 40.5 77.3 Up 04:52:17 - 05:22:17 2537
Gardnerville 05:07:18 -51.8 Dark Down 40.5 77.1 Up 04:52:18 - 05:22:18 2512
Yerington 05:07:16 -52.2 Dark Down 41.0 77.4 Up 04:52:16 - 05:22:16 2495
Hawthorne 05:07:16 -52.7 Dark Down 41.3 77.3 Up 04:52:16 - 05:22:16 2431
Lee Vining 05:07:18 -52.5 Dark Down 40.8 76.6 Up 04:52:18 - 05:22:18 2394
Bishop 05:07:18 -53.2 Dark Down 41.2 76.4 Up 04:52:18 - 05:22:18 2308
Beatty 05:07:16 -54.6 Dark Down 42.4 76.7 Up 04:52:16 - 05:22:16 2204
Dunrhomin 05:06:41 -61.6 Dark Down 51.7 86.0 Up 04:51:41 - 05:21:41 2179
Nikitin 05:06:42 -61.7 Dark Down 51.7 85.7 Up 04:51:42 - 05:21:42 2161
CU-SBO 05:06:42 -61.6 Dark Down 51.6 85.6 Up 04:51:42 - 05:21:42 2156
Wildwood 05:07:25 -53.7 Dark Down 40.2 73.6 Up 04:52:25 - 05:22:25 1993
Laughlin/Bullhead City 05:07:14 -56.7 Dark Down 43.7 76.0 Up 04:52:14 - 05:22:14 1953
Patrick 05:07:12 -57.2 Dark Down 44.3 76.5 Up 04:52:12 - 05:22:12 1953
Idyllwild 05:07:21 -55.3 Dark Down 41.6 74.0 Up 04:52:21 - 05:22:21 1886
Lake Havasu City 05:07:14 -57.0 Dark Down 43.7 75.5 Up 04:52:14 - 05:22:14 1876
Calipatria 05:07:20 -56.3 Dark Down 42.4 73.8 Up 04:52:20 - 05:22:20 1781
George/Scottsdale 05:07:09 -59.2 Dark Down 45.5 75.6 Up 04:52:09 - 05:22:09 1711
Yuma 05:07:18 -57.1 Dark Down 43.0 73.8 Up 04:52:18 - 05:22:18 1704

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 04:56UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 21.60  85
Alnath         05:26:17.6 +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 2022/12/25 03:54:36 UT

Marc W. Buie, Southwest Research Institute

RECON