RECON: TNO occultation with 15VZ184

Event between 15VZ184 and star GA1240:01006640 with event index number of 2727129

Geocentric closest approach at 2026/12/15 05:03:45 UTC

J2000 position of star is 04:05:39.0 +34:58:01
Equinox of date position of star is 04:07:11.8 +35:01:48
Stellar brightness G=13.4, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 96 degrees from the moon. Moon is 31% illuminated.
Apparent brightness V=22.4

[RECON map]
Object is 28.9 AU from the Sun and 27.9 AU from the Earth.
Apparent velocity is 22.8 km/sec on the sky relative to the star, or, 4.0 arcsec/hr.
The 1-sigma error in the time of the event is 91 seconds.
The 1-sigma cross-track error in the shadow position is 1280 km.
The sky-plane scale is 20268.6 km/arcsec.

The object has an absolute magnitude Hv=7.8
Diameter=166.0 km assuming a 5% albedo -- 7.4 sec chord
Diameter=67.8 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 15VZ184, (2026/12/15 05:04UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:28.2 +16:33:41  0.8 19.66 100
44Zet Per      03:55:50.0 +31:57:41  2.8  3.91  93
PPM 069097     04:08:39.8 +33:31:00  6.4  1.54  96
PPM 069048     04:04:57.9 +34:54:22  8.2  0.52  95
PPM 069083     04:07:21.8 +35:14:11  9.5  0.20  96
15VZ184        04:07:24.1 +35:02:18 13.4        96
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 5.0 sigma about the mid-time.
The median site spacing is 32.6 km RECON observability=1.0 and success probability=4.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 05:04:29 -47.0 Dark Up 67.8 126.6 Up 04:56:22 - 05:12:36 3859
Victoria 05:04:43 -45.9 Dark Up 67.2 117.4 Up 04:56:36 - 05:12:50 3764
Kelowna 05:04:29 -47.9 Dark Up 68.7 126.5 Up 04:56:22 - 05:12:36 3755
Peachland 05:04:30 -47.7 Dark Up 68.6 125.7 Up 04:56:23 - 05:12:37 3755
Summerland 05:04:30 -47.8 Dark Up 68.8 125.6 Up 04:56:23 - 05:12:37 3738
Penticton 05:04:30 -47.9 Dark Up 68.8 125.6 Up 04:56:23 - 05:12:37 3728
Oliver 05:04:32 -48.1 Dark Up 69.1 124.9 Up 04:56:25 - 05:12:39 3695
Anarchist Mountain Observatory 05:04:31 -48.3 Dark Up 69.3 124.9 Up 04:56:24 - 05:12:38 3673
Okanogan 05:04:33 -48.4 Dark Up 69.5 123.1 Up 04:56:26 - 05:12:40 3620
Brewster 05:04:34 -48.3 Dark Up 69.5 122.1 Up 04:56:27 - 05:12:41 3601
Sleaford 05:03:48 -53.8 Dark Down 72.1 159.6 Up 04:55:41 - 05:11:55 3597
Manson/Chelan 05:04:36 -48.2 Dark Up 69.4 121.0 Up 04:56:29 - 05:12:43 3594
Wenatchee 05:04:37 -48.3 Dark Up 69.6 119.7 Up 04:56:30 - 05:12:44 3556
Ellensburg 05:04:39 -48.3 Dark Up 69.7 118.3 Up 04:56:32 - 05:12:46 3524
Yakima 05:04:41 -48.4 Dark Up 69.8 117.4 Up 04:56:34 - 05:12:48 3487
Toppenish/White Swan 05:04:40 -48.6 Dark Up 70.0 117.1 Up 04:56:33 - 05:12:47 3461
The Dalles 05:04:45 -48.3 Dark Up 69.9 114.0 Up 04:56:38 - 05:12:52 3415
PNWRO 05:04:37 -49.7 Dark Up 71.1 118.6 Up 04:56:30 - 05:12:44 3374
Maupin 05:04:45 -48.5 Dark Up 70.1 113.1 Up 04:56:38 - 05:12:52 3372
Sisters 05:04:49 -48.4 Dark Up 70.1 110.1 Up 04:56:42 - 05:12:56 3307
Bend 05:04:49 -48.7 Dark Up 70.4 109.9 Up 04:56:42 - 05:12:56 3275
Oregon Observatory 05:04:50 -48.6 Dark Up 70.4 109.2 Up 04:56:43 - 05:12:57 3263
Chiloquin 05:04:54 -48.7 Dark Up 70.5 105.2 Up 04:56:47 - 05:13:01 3154
Klamath Falls 05:04:55 -48.8 Dark Up 70.6 104.3 Up 04:56:48 - 05:13:02 3118
Cedarville 05:04:52 -50.1 Dark Up 71.9 104.3 Up 04:56:45 - 05:12:59 2991
Fall River/Burney 05:04:56 -49.3 Dark Up 71.2 101.5 Up 04:56:49 - 05:13:03 2991
Greenville 05:04:57 -49.9 Dark Up 71.7 99.3 Up 04:56:50 - 05:13:04 2886
Gimple 05:04:57 -49.9 Dark Up 71.7 99.4 Up 04:56:50 - 05:13:04 2883
Quincy 05:04:58 -49.9 Dark Up 71.7 98.7 Up 04:56:51 - 05:13:05 2866
Portola 05:04:56 -50.3 Dark Up 72.1 98.8 Up 04:56:49 - 05:13:03 2836
Reno 05:04:55 -50.8 Dark Up 72.6 98.6 Up 04:56:48 - 05:13:02 2785
Carson City 05:04:56 -50.9 Dark Up 72.7 97.5 Up 04:56:49 - 05:13:03 2749
Gardnerville 05:04:56 -51.0 Dark Up 72.8 96.8 Up 04:56:49 - 05:13:03 2723
Yerington 05:04:54 -51.4 Dark Up 73.2 97.5 Up 04:56:47 - 05:13:01 2706
Hawthorne 05:04:54 -51.9 Dark Up 73.7 96.4 Up 04:56:47 - 05:13:01 2640
Lee Vining 05:04:56 -51.7 Dark Up 73.3 94.1 Up 04:56:49 - 05:13:03 2603
Bishop 05:04:55 -52.3 Dark Up 73.9 92.6 Up 04:56:48 - 05:13:02 2516
Beatty 05:04:51 -53.7 Dark Up 75.3 92.1 Up 04:56:44 - 05:12:58 2408
Dunrhomin 05:04:05 -61.0 Dark Down 82.5 132.9 Up 04:55:58 - 05:12:12 2371
Nikitin 05:04:05 -61.1 Dark Down 82.6 131.7 Up 04:55:58 - 05:12:12 2352
CU-SBO 05:04:06 -61.1 Dark Down 82.6 131.0 Up 04:55:59 - 05:12:13 2347
Wildwood 05:05:03 -52.6 Dark Up 73.6 81.3 Up 04:56:56 - 05:13:10 2200
Laughlin/Bullhead City 05:04:47 -55.7 Dark Up 77.0 86.3 Up 04:56:40 - 05:12:54 2152
Patrick 05:04:44 -56.2 Dark Up 77.6 87.6 Up 04:56:37 - 05:12:51 2151
Idyllwild 05:04:57 -54.2 Dark Up 75.1 80.2 Up 04:56:50 - 05:13:04 2089
Lake Havasu City 05:04:48 -56.0 Dark Up 77.1 83.4 Up 04:56:41 - 05:12:55 2075
Calipatria 05:04:54 -55.3 Dark Up 75.9 77.8 Up 04:56:47 - 05:13:01 1982
George/Scottsdale 05:04:40 -58.2 Dark Up 79.0 79.7 Up 04:56:33 - 05:12:47 1906
Yuma 05:04:52 -56.0 Dark Up 76.6 75.9 Up 04:56:45 - 05:12:59 1904

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 15VZ184, (2026/12/15 05:04UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 19.66 100
44Zet Per      03:54:07.9 +31:53:01  2.8  3.91  93
PPM 069097     04:06:55.8 +33:26:46  6.4  1.54  96
PPM 069048     04:03:13.0 +34:50:00  8.2  0.52  95
PPM 069083     04:05:36.6 +35:09:54  9.5  0.20  96
15VZ184        04:05:39.0 +34:58:01 13.4        96
Positions are for J2000

Event circumstances last updated at 2023/10/27 01:58:33 UT

Marc W. Buie, Southwest Research Institute

RECON