RECON: TNO occultation with 04VZ130

Event between 04VZ130 and star GA1200:01707148 with event index number of 1978891

Geocentric closest approach at 2024/02/03 04:47:06 UTC

J2000 position of star is 05:33:25.2 +31:47:30
Equinox of date position of star is 05:34:54.8 +31:48:22
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 142 degrees from the moon. Moon is 48% illuminated.
Apparent brightness V=24.0

[RECON map]
Object is 33.4 AU from the Sun and 32.8 AU from the Earth.
Apparent velocity is 14.8 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 317 seconds.
The 1-sigma cross-track error in the shadow position is 1672 km.
The sky-plane scale is 23788.4 km/arcsec.

The object has an absolute magnitude Hv=8.7
Diameter=109.1 km assuming a 5% albedo -- 7.4 sec chord
Diameter=44.6 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04VZ130, (2024/02/03 04:42UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:18.3 +16:33:21  0.8 20.10 155
Alnath         05:27:49.0 +28:37:32  1.6  3.54 144
25Chi Aur      05:34:17.9 +32:12:27  4.8  0.43 142
PPM 070525     05:34:33.6 +31:53:13  7.5  0.12 142
04VZ130        05:34:59.1 +31:48:24 16.9       141
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 2.8 sigma about the mid-time.
The median site spacing is 30.1 km RECON observability=1.0 and success probability=32.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:45:28 -43.7 Dark Down 67.0 214.1 Up 04:30:28 - 05:00:28 432
Kamloops 04:46:34 -36.5 Dark Down 71.1 182.1 Up 04:31:34 - 05:01:34 431
Kelowna 04:46:32 -37.3 Dark Down 71.9 184.6 Up 04:31:32 - 05:01:32 333
Peachland 04:46:33 -37.2 Dark Down 72.0 183.8 Up 04:31:33 - 05:01:33 326
Summerland 04:46:33 -37.3 Dark Down 72.2 184.1 Up 04:31:33 - 05:01:33 310
Penticton 04:46:33 -37.3 Dark Down 72.2 184.5 Up 04:31:33 - 05:01:33 301
Oliver 04:46:33 -37.5 Dark Down 72.6 184.5 Up 04:31:33 - 05:01:33 264
Victoria 04:46:52 -35.3 Dark Down 73.2 173.6 Up 04:31:52 - 05:01:52 258
Anarchist Mountain Observatory 04:46:33 -37.6 Dark Down 72.7 185.1 Up 04:31:33 - 05:01:33 244
Okanogan 04:46:34 -37.7 Dark Down 73.4 184.7 Up 04:31:34 - 05:01:34 180
Brewster 04:46:36 -37.7 Dark Down 73.7 184.2 Up 04:31:36 - 05:01:36 154
Manson/Chelan 04:46:38 -37.5 Dark Down 73.9 183.1 Up 04:31:38 - 05:01:38 138
Wenatchee 04:46:39 -37.6 Dark Down 74.4 182.7 Up 04:31:39 - 05:01:39 91
Ellensburg 04:46:41 -37.5 Dark Down 74.8 182.1 Up 04:31:41 - 05:01:41 51
Yakima 04:46:42 -37.7 Dark Down 75.2 182.1 Up 04:31:42 - 05:01:42 9
Toppenish/White Swan 04:46:41 -37.8 Dark Down 75.4 182.7 Up 04:31:41 - 05:01:41 -17
PNWRO 04:46:34 -38.9 Dark Down 75.7 187.8 Up 04:31:34 - 05:01:34 -79
The Dalles 04:46:46 -37.5 Dark Down 76.2 180.1 Up 04:31:46 - 05:01:46 -85
Maupin 04:46:46 -37.7 Dark Down 76.6 180.5 Up 04:31:46 - 05:01:46 -131
Sisters 04:46:50 -37.6 Dark Down 77.5 178.6 Up 04:31:50 - 05:01:50 -216
Bend 04:46:49 -37.8 Dark Down 77.7 179.6 Up 04:31:49 - 05:01:49 -246
Oregon Observatory 04:46:51 -37.8 Dark Down 77.9 179.1 Up 04:31:51 - 05:01:51 -262
Chiloquin 04:46:55 -37.8 Dark Down 79.2 177.2 Up 04:31:55 - 05:01:55 -394
Klamath Falls 04:46:55 -38.0 Dark Down 79.6 177.5 Up 04:31:55 - 05:01:55 -432
Cedarville 04:46:48 -39.3 Dark Down 80.2 185.2 Up 04:31:48 - 05:01:48 -535
Fall River/Burney 04:46:54 -38.5 Dark Down 80.7 179.2 Up 04:31:54 - 05:01:54 -565
Greenville 04:46:54 -39.0 Dark Down 81.6 181.7 Up 04:31:54 - 05:01:54 -670
Gimple 04:46:53 -39.1 Dark Down 81.6 182.2 Up 04:31:53 - 05:01:53 -672
Quincy 04:46:54 -39.0 Dark Down 81.9 181.8 Up 04:31:54 - 05:01:54 -692
Portola 04:46:52 -39.4 Dark Down 82.0 184.7 Up 04:31:52 - 05:01:52 -714
Reno 04:46:48 -40.0 Dark Down 82.2 188.8 Up 04:31:48 - 05:01:48 -754
Carson City 04:46:49 -40.0 Dark Down 82.5 189.4 Up 04:31:49 - 05:01:49 -794
Gardnerville 04:46:49 -40.1 Dark Down 82.8 190.0 Up 04:31:49 - 05:01:49 -821
Yerington 04:46:45 -40.6 Dark Down 82.6 193.7 Up 04:31:45 - 05:01:45 -826
Dunrhomin 04:45:27 -50.1 Dark Down 74.8 241.2 Up 04:30:27 - 05:00:27 -851
Nikitin 04:45:27 -50.2 Dark Down 74.9 241.8 Up 04:30:27 - 05:00:27 -871
CU-SBO 04:45:27 -50.2 Dark Down 75.0 241.8 Up 04:30:27 - 05:00:27 -878
Hawthorne 04:46:43 -41.1 Dark Down 82.9 198.1 Up 04:31:43 - 05:01:43 -885
Lee Vining 04:46:47 -40.8 Dark Down 83.6 196.2 Up 04:31:47 - 05:01:47 -938
Bishop 04:46:43 -41.5 Dark Down 84.0 203.3 Up 04:31:43 - 05:01:43 -1015
Beatty 04:46:34 -42.8 Dark Down 83.7 216.7 Up 04:31:34 - 05:01:34 -1092
Patrick 04:46:20 -45.4 Dark Down 83.0 241.1 Up 04:31:20 - 05:01:20 -1297
Laughlin/Bullhead City 04:46:23 -44.9 Dark Down 83.6 240.1 Up 04:31:23 - 05:01:23 -1314
Wildwood 04:46:49 -41.9 Dark Down 86.8 224.4 Up 04:31:49 - 05:01:49 -1367
Lake Havasu City 04:46:23 -45.2 Dark Down 83.7 246.5 Up 04:31:23 - 05:01:23 -1391
Idyllwild 04:46:38 -43.4 Dark Down 85.8 243.9 Up 04:31:38 - 05:01:38 -1438
George/Scottsdale 04:46:09 -47.3 Dark Down 82.0 258.6 Up 04:31:09 - 05:01:09 -1510
Calipatria 04:46:31 -44.5 Dark Down 85.1 255.8 Up 04:31:31 - 05:01:31 -1524
Yuma 04:46:27 -45.3 Dark Down 84.4 262.4 Up 04:31:27 - 05:01:27 -1584

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, (2024/02/03 04:42UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 20.10 155
Alnath         05:26:17.6 +28:36:23  1.6  3.54 144
25Chi Aur      05:32:43.7 +32:11:31  4.8  0.43 142
PPM 070525     05:32:59.7 +31:52:18  7.5  0.12 142
04VZ130        05:33:25.2 +31:47:30 16.9       142
Positions are for J2000

Event circumstances last updated at 2022/12/24 04:01:30 UT

Marc W. Buie, Southwest Research Institute

RECON