RECON: TNO occultation with 482824

Event between (482824) 13XC26 and star GA1240:03349389 with event index number of 2317617

Geocentric closest approach at 2026/02/20 04:19:32 UTC

J2000 position of star is 09:25:26.2 +35:19:16
Equinox of date position of star is 09:26:55.8 +35:12:52
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 124 degrees from the moon. Moon is 8% illuminated.
Apparent brightness V=20.1

[RECON map]
Object is 35.8 AU from the Sun and 34.9 AU from the Earth.
Apparent velocity is 23.6 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 68 seconds.
The 1-sigma cross-track error in the shadow position is 1316 km.
The sky-plane scale is 25307.2 km/arcsec.

The object has an absolute magnitude Hv=4.5
Diameter=731.2 km assuming a 5% albedo -- 32.0 sec chord
Diameter=298.5 km assuming a 30% albedo -- 13.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 482824, (2026/02/20 04:21UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:54.9 +27:57:39  1.1 22.45 108
40Alp Lyn      09:22:38.5 +34:16:50  3.1  1.29 124
PPM 074497     09:27:21.0 +35:09:15  8.5  0.08 124
482824         09:27:01.9 +35:12:26 16.8       124
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 31.1 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)
Kamloops 04:21:56 -28.3 Dark Up 53.7 96.9 Up 04:15:44 - 04:28:08 4291
Sleaford 04:21:18 -35.7 Dark Down 61.9 114.0 Up 04:15:06 - 04:27:30 4242
Kelowna 04:21:54 -29.1 Dark Up 54.3 96.6 Up 04:15:42 - 04:28:06 4190
Peachland 04:21:56 -28.9 Dark Up 54.2 96.2 Up 04:15:44 - 04:28:08 4184
Summerland 04:21:56 -29.0 Dark Up 54.2 96.0 Up 04:15:44 - 04:28:08 4167
Penticton 04:21:56 -29.1 Dark Up 54.3 96.0 Up 04:15:44 - 04:28:08 4158
Victoria 04:21:59 -27.0 Dark Up 51.9 91.6 Up 04:15:47 - 04:28:11 4135
Oliver 04:21:56 -29.2 Dark Up 54.4 95.5 Up 04:15:44 - 04:28:08 4122
Anarchist Mountain Observatory 04:21:56 -29.4 Dark Up 54.5 95.5 Up 04:15:44 - 04:28:08 4100
Okanogan 04:21:58 -29.5 Dark Up 54.4 94.4 Up 04:15:46 - 04:28:10 4037
Brewster 04:21:58 -29.4 Dark Up 54.3 93.9 Up 04:15:46 - 04:28:10 4013
Manson/Chelan 04:21:59 -29.3 Dark Up 54.1 93.3 Up 04:15:47 - 04:28:11 3998
Wenatchee 04:21:59 -29.3 Dark Up 54.0 92.5 Up 04:15:47 - 04:28:11 3952
Ellensburg 04:21:59 -29.3 Dark Up 53.8 91.7 Up 04:15:47 - 04:28:11 3914
Yakima 04:21:59 -29.4 Dark Up 53.8 91.2 Up 04:15:47 - 04:28:11 3872
Toppenish/White Swan 04:21:59 -29.5 Dark Up 54.0 91.0 Up 04:15:47 - 04:28:11 3846
The Dalles 04:21:59 -29.2 Dark Up 53.4 89.4 Up 04:15:47 - 04:28:11 3784
PNWRO 04:21:59 -30.6 Dark Up 55.0 91.6 Up 04:15:47 - 04:28:11 3776
Maupin 04:21:59 -29.4 Dark Up 53.5 88.9 Up 04:15:47 - 04:28:11 3738
Sisters 04:21:59 -29.3 Dark Up 53.1 87.4 Up 04:15:47 - 04:28:11 3660
Bend 04:21:59 -29.5 Dark Up 53.3 87.2 Up 04:15:47 - 04:28:11 3629
Oregon Observatory 04:21:59 -29.5 Dark Up 53.2 86.9 Up 04:15:47 - 04:28:11 3615
Chiloquin 04:21:59 -29.5 Dark Up 52.8 84.9 Up 04:15:47 - 04:28:11 3491
Klamath Falls 04:21:59 -29.6 Dark Up 52.8 84.5 Up 04:15:47 - 04:28:11 3454
Cedarville 04:21:59 -30.9 Dark Up 53.9 84.5 Up 04:15:47 - 04:28:11 3338
Fall River/Burney 04:21:59 -30.1 Dark Up 53.0 83.2 Up 04:15:47 - 04:28:11 3323
Greenville 04:21:59 -30.7 Dark Up 53.2 82.2 Up 04:15:47 - 04:28:11 3217
Gimple 04:21:59 -30.7 Dark Up 53.2 82.3 Up 04:15:47 - 04:28:11 3214
Quincy 04:21:59 -30.7 Dark Up 53.2 81.9 Up 04:15:47 - 04:28:11 3196
Portola 04:21:59 -31.1 Dark Up 53.5 82.0 Up 04:15:47 - 04:28:11 3169
Reno 04:21:59 -31.6 Dark Up 54.0 82.0 Up 04:15:47 - 04:28:11 3123
Carson City 04:21:59 -31.7 Dark Up 53.9 81.5 Up 04:15:47 - 04:28:11 3085
Gardnerville 04:21:59 -31.8 Dark Up 53.9 81.2 Up 04:15:47 - 04:28:11 3058
Yerington 04:21:59 -32.3 Dark Up 54.4 81.5 Up 04:15:47 - 04:28:11 3047
Hawthorne 04:21:59 -32.8 Dark Down 54.7 81.1 Up 04:15:47 - 04:28:11 2984
Dunrhomin 04:21:26 -42.0 Dark Down 65.1 91.4 Up 04:15:14 - 04:27:38 2950
Lee Vining 04:21:59 -32.5 Dark Up 54.3 80.1 Up 04:15:47 - 04:28:11 2939
Nikitin 04:21:26 -42.0 Dark Down 65.1 91.0 Up 04:15:14 - 04:27:38 2930
CU-SBO 04:21:26 -42.0 Dark Down 65.0 90.8 Up 04:15:14 - 04:27:38 2924
Bishop 04:21:59 -33.2 Dark Down 54.7 79.6 Up 04:15:47 - 04:28:11 2856
Beatty 04:21:59 -34.6 Dark Down 55.9 79.6 Up 04:15:47 - 04:28:11 2764
Patrick 04:21:57 -37.2 Dark Down 57.9 78.4 Up 04:15:45 - 04:28:09 2543
Laughlin/Bullhead City 04:21:59 -36.7 Dark Down 57.3 77.8 Up 04:15:47 - 04:28:11 2530
Wildwood 04:21:59 -33.7 Dark Down 53.8 75.1 Up 04:15:47 - 04:28:11 2521
Lake Havasu City 04:21:59 -37.1 Dark Down 57.4 76.8 Up 04:15:47 - 04:28:11 2452
Idyllwild 04:21:59 -35.3 Dark Down 55.3 75.1 Up 04:15:47 - 04:28:11 2426
Calipatria 04:21:59 -36.4 Dark Down 56.1 74.5 Up 04:15:47 - 04:28:11 2331
George/Scottsdale 04:21:52 -39.2 Dark Down 59.1 76.2 Up 04:15:40 - 04:28:04 2323
Yuma 04:21:59 -37.2 Dark Down 56.7 74.1 Up 04:15:47 - 04:28:11 2263

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 482824, (2026/02/20 04:21UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 22.45 108
40Alp Lyn      09:21:02.9 +34:23:34  3.1  1.29 124
PPM 074497     09:25:45.3 +35:16:06  8.5  0.08 124
482824         09:25:26.2 +35:19:16 16.8       124
Positions are for J2000

Event circumstances last updated at 2024/06/18 21:25:25 UT

Marc W. Buie, Southwest Research Institute

RECON