RECON: TNO occultation with 15874

Event between (15874) 96TL66 and star GA0920:01029602 with event index number of 1643296

Geocentric closest approach at 2026/12/07 09:02:12 UTC

J2000 position of star is 06:02:45.8 +03:31:52
Equinox of date position of star is 06:04:01.7 +03:31:45
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 139 degrees from the moon. Moon is 3% illuminated.
Apparent brightness V=21.5

[RECON map]
Object is 40.4 AU from the Sun and 39.5 AU from the Earth.
Apparent velocity is 24.2 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 108 seconds.
The 1-sigma cross-track error in the shadow position is 1561 km.
The sky-plane scale is 28668.5 km/arcsec.

The object has an absolute magnitude Hv=5.4
Diameter=487.5 km assuming a 5% albedo -- 20.4 sec chord
Diameter=199.0 km assuming a 30% albedo -- 8.3 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 15874, (2026/12/07 09:01UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:37.8 +07:24:35  0.4  4.31 142
34Del Ori      05:33:23.0 -00:16:53  2.2  8.59 142
66 Ori         06:06:23.8 +04:09:18  5.6  0.83 138
PPM 149826     06:04:51.4 +03:51:33  8.0  0.37 138
PPM 149794     06:03:14.0 +03:18:30  9.2  0.32 139
15874          06:04:10.9 +03:31:44 16.7       138
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 27.1 km RECON observability=1.0 and success probability=4.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 09:01:41 -58.9 Dark Down 42.9 180.7 Up 08:52:12 - 09:11:10 3134
Sleaford 09:01:01 -51.9 Dark Down 39.9 199.4 Up 08:51:32 - 09:10:30 3091
Kelowna 09:01:39 -59.3 Dark Down 43.7 181.9 Up 08:52:10 - 09:11:08 3063
Peachland 09:01:40 -59.5 Dark Down 43.8 181.5 Up 08:52:11 - 09:11:09 3058
Summerland 09:01:39 -59.6 Dark Down 43.9 181.7 Up 08:52:10 - 09:11:08 3045
Penticton 09:01:39 -59.6 Dark Down 44.0 181.8 Up 08:52:10 - 09:11:08 3039
Oliver 09:01:39 -59.9 Dark Down 44.3 181.8 Up 08:52:10 - 09:11:08 3012
Victoria 09:01:51 -61.8 Dark Down 45.0 176.5 Up 08:52:22 - 09:11:20 3006
Anarchist Mountain Observatory 09:01:39 -59.9 Dark Down 44.5 182.1 Up 08:52:10 - 09:11:08 2997
Okanogan 09:01:40 -60.6 Dark Down 45.2 181.8 Up 08:52:11 - 09:11:09 2949
Brewster 09:01:41 -60.8 Dark Down 45.4 181.6 Up 08:52:12 - 09:11:10 2930
Manson/Chelan 09:01:42 -61.2 Dark Down 45.6 181.0 Up 08:52:13 - 09:11:11 2918
Wenatchee 09:01:43 -61.6 Dark Down 46.1 180.8 Up 08:52:14 - 09:11:12 2882
Ellensburg 09:01:44 -62.0 Dark Down 46.5 180.5 Up 08:52:15 - 09:11:13 2852
Yakima 09:01:44 -62.4 Dark Down 46.9 180.5 Up 08:52:15 - 09:11:13 2820
Toppenish/White Swan 09:01:43 -62.5 Dark Down 47.2 180.7 Up 08:52:14 - 09:11:12 2800
PNWRO 09:01:39 -62.1 Dark Down 47.5 182.9 Up 08:52:10 - 09:11:08 2752
The Dalles 09:01:46 -63.4 Dark Down 47.9 179.6 Up 08:52:17 - 09:11:15 2747
Maupin 09:01:46 -63.7 Dark Down 48.4 179.7 Up 08:52:17 - 09:11:15 2712
Sisters 09:01:48 -64.6 Dark Down 49.2 179.0 Up 08:52:19 - 09:11:17 2646
Bend 09:01:48 -64.7 Dark Down 49.5 179.4 Up 08:52:19 - 09:11:17 2623
Oregon Observatory 09:01:48 -64.9 Dark Down 49.6 179.2 Up 08:52:19 - 09:11:17 2610
Chiloquin 09:01:50 -66.1 Dark Down 51.0 178.5 Up 08:52:21 - 09:11:19 2505
Klamath Falls 09:01:50 -66.4 Dark Down 51.3 178.6 Up 08:52:21 - 09:11:19 2474
Cedarville 09:01:45 -66.1 Dark Down 52.0 181.2 Up 08:52:16 - 09:11:14 2394
Fall River/Burney 09:01:50 -67.1 Dark Down 52.5 179.2 Up 08:52:21 - 09:11:19 2368
Greenville 09:01:48 -67.5 Dark Down 53.4 179.9 Up 08:52:19 - 09:11:17 2283
Gimple 09:01:48 -67.5 Dark Down 53.4 180.1 Up 08:52:19 - 09:11:17 2281
Quincy 09:01:49 -67.7 Dark Down 53.6 179.9 Up 08:52:20 - 09:11:18 2265
Portola 09:01:47 -67.5 Dark Down 53.7 180.7 Up 08:52:18 - 09:11:16 2247
Reno 09:01:45 -67.3 Dark Down 54.0 181.8 Up 08:52:16 - 09:11:14 2215
Carson City 09:01:45 -67.6 Dark Down 54.3 181.9 Up 08:52:16 - 09:11:14 2183
Gardnerville 09:01:45 -67.7 Dark Down 54.6 182.0 Up 08:52:16 - 09:11:14 2160
Yerington 09:01:43 -67.3 Dark Down 54.5 183.0 Up 08:52:14 - 09:11:12 2156
Hawthorne 09:01:41 -67.3 Dark Down 54.9 183.9 Up 08:52:12 - 09:11:10 2107
Dunrhomin 09:00:55 -57.6 Dark Down 50.7 204.9 Up 08:51:26 - 09:10:24 2093
Nikitin 09:00:55 -57.7 Dark Down 50.9 205.0 Up 08:51:26 - 09:10:24 2076
CU-SBO 09:00:55 -57.8 Dark Down 50.9 204.9 Up 08:51:26 - 09:10:24 2072
Lee Vining 09:01:43 -68.0 Dark Down 55.5 183.1 Up 08:52:14 - 09:11:12 2063
Bishop 09:01:41 -67.9 Dark Down 56.1 184.5 Up 08:52:12 - 09:11:10 1999
Beatty 09:01:35 -67.1 Dark Down 56.4 187.4 Up 08:52:06 - 09:11:04 1933
Patrick 09:01:26 -65.8 Dark Down 57.5 193.0 Up 08:51:57 - 09:10:55 1755
Laughlin/Bullhead City 09:01:28 -66.4 Dark Down 57.8 191.8 Up 08:51:59 - 09:10:57 1741
Wildwood 09:01:44 -69.8 Dark Down 59.4 184.5 Up 08:52:15 - 09:11:13 1697
Lake Havasu City 09:01:28 -66.5 Dark Down 58.5 192.5 Up 08:51:59 - 09:10:57 1674
Idyllwild 09:01:37 -68.6 Dark Down 59.5 188.2 Up 08:52:08 - 09:11:06 1636
George/Scottsdale 09:01:19 -64.9 Dark Down 58.7 197.4 Up 08:51:50 - 09:10:48 1566
Calipatria 09:01:33 -68.0 Dark Down 60.0 190.7 Up 08:52:04 - 09:11:02 1560
Yuma 09:01:29 -67.4 Dark Down 60.3 192.6 Up 08:52:00 - 09:10:58 1506

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 15874, (2026/12/07 09:01UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  4.31 142
34Del Ori      05:32:00.4 -00:17:57  2.2  8.59 142
66 Ori         06:04:58.3 +04:09:31  5.6  0.83 138
PPM 149826     06:03:26.2 +03:51:43  8.0  0.37 138
PPM 149794     06:01:49.1 +03:18:36  9.2  0.32 139
15874          06:02:45.8 +03:31:52 16.7       138
Positions are for J2000

Event circumstances last updated at 2024/01/09 04:32:03 UT

Marc W. Buie, Southwest Research Institute

RECON