RECON: TNO occultation with 15874

Event between (15874) 96TL66 and star GA0920:00954052 with event index number of 1497497

Geocentric closest approach at 2025/12/10 11:17:48 UTC

J2000 position of star is 05:55:54.8 +03:56:17
Equinox of date position of star is 05:57:10.9 +03:56:24
Stellar brightness G=14.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 65 degrees from the moon. Moon is 64% illuminated.
Apparent brightness V=21.4

[RECON map]
Object is 40.1 AU from the Sun and 39.1 AU from the Earth.
Apparent velocity is 24.6 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 95 seconds.
The 1-sigma cross-track error in the shadow position is 1494 km.
The sky-plane scale is 28385.5 km/arcsec.

The object has an absolute magnitude Hv=5.4
Diameter=487.5 km assuming a 5% albedo -- 20.1 sec chord
Diameter=199.0 km assuming a 30% albedo -- 8.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 15874, (2025/12/10 11:17UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:34.6 +07:24:35  0.4  3.47  65
34Del Ori      05:33:20.0 -00:16:55  2.2  7.32  72
PPM 149639     05:56:18.7 +05:51:49  6.4  1.94  65
PPM 149620     05:55:37.6 +03:13:43  7.4  0.82  66
PPM 149661     05:57:36.5 +03:52:07  9.0  0.11  65
15874          05:57:17.0 +03:56:24 14.8        65
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 29.7 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 11:15:25 -33.3 Dark Up 24.8 241.9 Low 11:06:59 - 11:23:51 -2819
Kamloops 11:15:41 -42.4 Dark Up 33.0 228.5 Up 11:07:15 - 11:24:07 -2879
Kelowna 11:15:38 -42.1 Dark Up 33.1 229.8 Up 11:07:12 - 11:24:04 -2950
Peachland 11:15:38 -42.3 Dark Up 33.3 229.5 Up 11:07:12 - 11:24:04 -2958
Summerland 11:15:37 -42.3 Dark Up 33.4 229.7 Up 11:07:11 - 11:24:03 -2970
Penticton 11:15:37 -42.2 Dark Up 33.3 229.9 Up 11:07:11 - 11:24:03 -2977
Oliver 11:15:36 -42.3 Dark Up 33.6 230.0 Up 11:07:10 - 11:24:02 -3006
Anarchist Mountain Observatory 11:15:36 -42.2 Dark Up 33.6 230.3 Up 11:07:10 - 11:24:02 -3021
Victoria 11:15:44 -44.9 Dark Up 35.9 226.3 Up 11:07:18 - 11:24:10 -3043
Okanogan 11:15:35 -42.5 Dark Up 34.1 230.4 Up 11:07:09 - 11:24:01 -3074
Brewster 11:15:35 -42.7 Dark Up 34.4 230.4 Up 11:07:09 - 11:24:01 -3096
Manson/Chelan 11:15:36 -43.0 Dark Up 34.7 230.1 Up 11:07:10 - 11:24:02 -3112
Wenatchee 11:15:35 -43.2 Dark Up 35.1 230.2 Up 11:07:09 - 11:24:01 -3152
Ellensburg 11:15:35 -43.5 Dark Up 35.5 230.2 Up 11:07:09 - 11:24:01 -3187
Yakima 11:15:35 -43.6 Dark Up 35.8 230.4 Up 11:07:09 - 11:24:01 -3222
Toppenish/White Swan 11:15:34 -43.5 Dark Up 35.8 230.7 Up 11:07:08 - 11:24:00 -3241
PNWRO 11:15:30 -42.6 Dark Up 35.2 232.4 Up 11:07:04 - 11:23:56 -3280
The Dalles 11:15:35 -44.2 Dark Up 36.7 230.3 Up 11:07:09 - 11:24:01 -3305
Maupin 11:15:34 -44.2 Dark Up 36.9 230.6 Up 11:07:08 - 11:24:00 -3343
Sisters 11:15:33 -44.7 Dark Up 37.8 230.6 Up 11:07:07 - 11:23:59 -3418
Bend 11:15:32 -44.6 Dark Up 37.8 231.0 Up 11:07:06 - 11:23:58 -3440
Oregon Observatory 11:15:33 -44.7 Dark Up 38.0 231.0 Up 11:07:07 - 11:23:59 -3455
Chiloquin 11:15:32 -45.3 Dark Up 39.0 231.4 Up 11:07:06 - 11:23:58 -3572
Klamath Falls 11:15:32 -45.3 Dark Up 39.2 231.7 Up 11:07:06 - 11:23:58 -3604
Cedarville 11:15:26 -44.2 Dark Up 38.7 233.8 Up 11:07:00 - 11:23:52 -3676
Fall River/Burney 11:15:29 -45.2 Dark Up 39.7 232.8 Up 11:07:03 - 11:23:55 -3714
Greenville 11:15:26 -45.0 Dark Up 40.0 233.9 Up 11:07:00 - 11:23:52 -3801
Gimple 11:15:26 -44.9 Dark Up 39.9 234.0 Up 11:07:00 - 11:23:52 -3802
Quincy 11:15:26 -45.0 Dark Up 40.1 234.0 Up 11:07:00 - 11:23:52 -3820
Portola 11:15:25 -44.6 Dark Up 39.9 234.6 Up 11:06:59 - 11:23:51 -3834
Dunrhomin 11:14:49 -33.1 Dark Up 29.5 248.0 Low 11:06:23 - 11:23:15 -3850
Reno 11:15:25 -44.2 Dark Up 39.6 235.4 Up 11:06:59 - 11:23:51 -3864
Nikitin 11:14:49 -33.1 Dark Up 29.5 248.1 Low 11:06:23 - 11:23:15 -3867
CU-SBO 11:14:49 -33.1 Dark Up 29.6 248.0 Low 11:06:23 - 11:23:15 -3873
Carson City 11:15:25 -44.2 Dark Up 39.8 235.7 Up 11:06:59 - 11:23:51 -3898
Yerington 11:15:25 -43.7 Dark Up 39.5 236.5 Up 11:06:59 - 11:23:51 -3921
Gardnerville 11:15:25 -44.2 Dark Up 39.9 235.9 Up 11:06:59 - 11:23:51 -3921
Hawthorne 11:15:25 -43.3 Dark Up 39.4 237.3 Up 11:06:59 - 11:23:51 -3970
Lee Vining 11:15:25 -43.8 Dark Up 40.0 237.2 Up 11:06:59 - 11:23:51 -4020
Bishop 11:15:25 -43.2 Dark Up 39.9 238.3 Up 11:06:59 - 11:23:51 -4085
Beatty 11:15:25 -41.9 Dark Up 39.0 240.2 Up 11:06:59 - 11:23:51 -4147
Patrick 11:15:01 -39.7 Dark Up 37.7 243.7 Up 11:06:35 - 11:23:27 -4290
Laughlin/Bullhead City 11:15:03 -40.2 Dark Up 38.3 243.3 Up 11:06:37 - 11:23:29 -4312
Lake Havasu City 11:15:02 -40.0 Dark Up 38.4 244.0 Up 11:06:36 - 11:23:28 -4380
Wildwood 11:15:25 -43.4 Dark Up 41.7 240.6 Up 11:06:59 - 11:23:51 -4409
Idyllwild 11:15:07 -41.9 Dark Up 40.5 242.5 Up 11:06:41 - 11:23:33 -4444
George/Scottsdale 11:14:53 -37.9 Dark Up 36.9 246.6 Up 11:06:27 - 11:23:19 -4467
Calipatria 11:15:03 -40.9 Dark Up 39.9 244.0 Up 11:06:37 - 11:23:29 -4511
Yuma 11:15:00 -40.2 Dark Up 39.4 245.0 Up 11:06:34 - 11:23:26 -4559

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, (2025/12/10 11:17UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  3.47  65
34Del Ori      05:32:00.4 -00:17:57  2.2  7.32  72
PPM 149639     05:54:55.4 +05:51:39  6.4  1.94  65
PPM 149620     05:54:15.9 +03:13:31  7.4  0.82  66
PPM 149661     05:56:14.4 +03:52:00  9.0  0.11  65
15874          05:55:54.8 +03:56:17 14.8        65
Positions are for J2000

Event circumstances last updated at 2024/01/08 05:17:46 UT

Marc W. Buie, Southwest Research Institute

RECON