RECON: TNO occultation with 120061

Event between (120061) 03CO1 and star GA0580:44801126 with event index number of 2139091

Geocentric closest approach at 2026/08/20 07:01:34 UTC

J2000 position of star is 22:05:22.5 -31:41:54
Equinox of date position of star is 22:06:46.5 -31:34:47
Stellar brightness G=14.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 82 degrees from the moon. Moon is 52% illuminated.
Apparent brightness V=22.7

[RECON map]
Object is 22.9 AU from the Sun and 21.9 AU from the Earth.
Apparent velocity is 24.1 km/sec on the sky relative to the star, or, 5.5 arcsec/hr.
The 1-sigma error in the time of the event is 124 seconds.
The 1-sigma cross-track error in the shadow position is 1353 km.
The sky-plane scale is 15890.2 km/arcsec.

The object has an absolute magnitude Hv=9.1
Diameter=93.3 km assuming a 5% albedo -- 3.8 sec chord
Diameter=38.1 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 120061, (2026/08/20 07:02UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:59:06.9 -29:28:49  1.2 11.43  92
14Mu PsA       22:09:55.8 -32:51:27  4.5  1.44  82
PPM 302124     22:04:49.2 -31:18:56  6.9  0.51  81
PPM 302202     22:08:32.2 -31:34:09  9.7  0.35  82
PPM 302175     22:07:15.6 -31:36:15 10.3  0.08  82
120061         22:06:54.9 -31:34:05 14.6        82
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 26.6 km RECON observability=0.2 and success probability=1.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Victoria 07:01:02 -26.8 Dark Down 7.6 162.2 Really Low 06:50:10 - 07:11:54 2811
Kamloops 07:00:50 -25.4 Dark Down 6.1 164.8 Really Low 06:49:58 - 07:11:42 2790
Peachland 07:00:50 -26.4 Dark Down 7.1 165.3 Really Low 06:49:58 - 07:11:42 2775
Summerland 07:00:50 -26.5 Dark Down 7.3 165.3 Really Low 06:49:58 - 07:11:42 2773
Kelowna 07:00:49 -26.3 Dark Down 7.1 165.5 Really Low 06:49:57 - 07:11:41 2772
Penticton 07:00:50 -26.6 Dark Down 7.4 165.4 Really Low 06:49:58 - 07:11:42 2770
Oliver 07:00:50 -27.0 Dark Down 7.7 165.4 Really Low 06:49:58 - 07:11:42 2767
Anarchist Mountain Observatory 07:00:50 -27.2 Dark Down 7.9 165.6 Really Low 06:49:58 - 07:11:42 2763
Manson/Chelan 07:00:53 -28.1 Dark Down 8.9 164.9 Really Low 06:50:01 - 07:11:45 2762
Okanogan 07:00:51 -27.7 Dark Down 8.5 165.4 Really Low 06:49:59 - 07:11:43 2759
Brewster 07:00:52 -28.0 Dark Down 8.7 165.2 Really Low 06:50:00 - 07:11:44 2759
Wenatchee 07:00:54 -28.5 Dark Down 9.3 164.7 Really Low 06:50:02 - 07:11:46 2759
Ellensburg 07:00:56 -28.9 Dark Down 9.6 164.5 Really Low 06:50:04 - 07:11:48 2757
Yakima 07:00:55 -29.2 Dark Down 10.0 164.5 Really Low 06:50:03 - 07:11:47 2751
Toppenish/White Swan 07:00:56 -29.5 Dark Down 10.3 164.6 Really Low 06:50:04 - 07:11:48 2745
The Dalles 07:00:59 -30.0 Dark Down 10.9 163.9 Really Low 06:50:07 - 07:11:51 2745
Maupin 07:01:00 -30.5 Dark Down 11.3 164.0 Really Low 06:50:08 - 07:11:52 2737
Sisters 07:01:03 -31.2 Dark Down 12.0 163.5 Really Low 06:50:11 - 07:11:55 2729
Bend 07:01:02 -31.5 Dark Down 12.3 163.7 Really Low 06:50:10 - 07:11:54 2721
Oregon Observatory 07:01:03 -31.6 Dark Down 12.5 163.6 Really Low 06:50:11 - 07:11:55 2720
PNWRO 07:00:52 -30.1 Dark Down 10.9 165.9 Really Low 06:50:00 - 07:11:44 2717
Chiloquin 07:01:06 -32.7 Dark Down 13.6 163.2 Really Low 06:50:14 - 07:11:58 2700
Klamath Falls 07:01:06 -33.1 Dark Down 14.0 163.2 Really Low 06:50:14 - 07:11:58 2691
Fall River/Burney 07:01:07 -34.3 Dark Down 15.2 163.5 Really Low 06:50:15 - 07:11:59 2658
Cedarville 07:01:02 -34.1 Dark Down 15.0 164.5 Really Low 06:50:10 - 07:11:54 2651
Greenville 07:01:06 -35.3 Dark Down 16.2 163.8 Really Low 06:50:14 - 07:11:58 2628
Gimple 07:01:06 -35.3 Dark Down 16.2 163.8 Really Low 06:50:14 - 07:11:58 2627
Quincy 07:01:07 -35.4 Dark Down 16.4 163.8 Really Low 06:50:15 - 07:11:59 2623
Portola 07:01:05 -35.7 Dark Down 16.6 164.2 Really Low 06:50:13 - 07:11:57 2612
Reno 07:01:03 -36.1 Dark Down 17.0 164.7 Really Low 06:50:11 - 07:11:55 2594
Carson City 07:01:04 -36.4 Dark Down 17.3 164.7 Really Low 06:50:12 - 07:11:56 2584
Gardnerville 07:01:04 -36.7 Dark Down 17.6 164.7 Really Low 06:50:12 - 07:11:56 2576
Yerington 07:01:02 -36.8 Dark Down 17.6 165.2 Really Low 06:50:10 - 07:11:54 2567
Hawthorne 07:01:01 -37.4 Dark Down 18.2 165.6 Really Low 06:50:09 - 07:11:53 2544
Sleaford 07:00:10 -25.5 Dark Down 6.2 176.9 Really Low 06:49:18 - 07:11:02 2541
Lee Vining 07:01:03 -37.8 Dark Down 18.6 165.2 Really Low 06:50:11 - 07:11:55 2537
Bishop 07:01:02 -38.5 Dark Down 19.4 165.7 Really Low 06:50:10 - 07:11:54 2504
Beatty 07:00:57 -39.3 Dark Down 20.1 167.1 Low 06:50:05 - 07:11:49 2457
Wildwood 07:01:07 -41.6 Dark Down 22.5 165.3 Low 06:50:15 - 07:11:59 2394
Laughlin/Bullhead City 07:00:51 -41.4 Dark Down 22.2 168.9 Low 06:49:59 - 07:11:43 2350
Idyllwild 07:01:01 -42.4 Dark Down 23.2 166.9 Low 06:50:09 - 07:11:53 2344
Patrick 07:00:49 -41.3 Dark Down 22.0 169.6 Low 06:49:57 - 07:11:41 2343
Lake Havasu City 07:00:51 -42.1 Dark Down 22.9 169.1 Low 06:49:59 - 07:11:43 2319
Calipatria 07:00:57 -43.2 Dark Down 24.0 167.9 Low 06:50:05 - 07:11:49 2293
Dunrhomin 07:00:14 -37.3 Dark Down 18.0 177.5 Really Low 06:49:22 - 07:11:06 2283
CU-SBO 07:00:15 -37.6 Dark Down 18.2 177.4 Really Low 06:49:23 - 07:11:07 2278
Nikitin 07:00:15 -37.5 Dark Down 18.2 177.5 Really Low 06:49:23 - 07:11:07 2278
Yuma 07:00:54 -43.8 Dark Down 24.6 168.7 Low 06:50:02 - 07:11:46 2255
George/Scottsdale 07:00:43 -43.3 Dark Down 24.0 171.3 Low 06:49:51 - 07:11:35 2230

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 120061, (2026/08/20 07:02UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 11.43  92
14Mu PsA       22:08:23.2 -32:59:19  4.5  1.44  82
PPM 302124     22:03:16.8 -31:26:43  6.9  0.51  81
PPM 302202     22:07:00.0 -31:42:00  9.7  0.35  82
PPM 302175     22:05:43.3 -31:44:04 10.3  0.08  82
120061         22:05:22.5 -31:41:54 14.6        81
Positions are for J2000

Event circumstances last updated at 2024/03/21 22:31:29 UT

Marc W. Buie, Southwest Research Institute

RECON