RECON: TNO occultation with 579062

Event between (579062) 14KF113 and star GA0940:04993495 with event index number of 2557502

Geocentric closest approach at 2025/07/12 04:45:54 UTC

J2000 position of star is 17:27:23.9 +05:48:16
Equinox of date position of star is 17:28:33.4 +05:47:10
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 54 degrees from the moon. Moon is 98% illuminated.
Apparent brightness V=22.4

[RECON map]
Object is 35.2 AU from the Sun and 34.4 AU from the Earth.
Apparent velocity is 21.4 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 167 seconds.
The 1-sigma cross-track error in the shadow position is 1346 km.
The sky-plane scale is 24962.7 km/arcsec.

The object has an absolute magnitude Hv=6.9
Diameter=250.0 km assuming a 5% albedo -- 11.8 sec chord
Diameter=102.1 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 579062, (2025/07/12 04:46UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:58.6 -26:29:11  0.9 35.17  56
60Bet Oph      17:44:44.1 +04:33:31  2.8  4.19  50
49Sig Oph      17:27:47.0 +04:07:12  4.3  1.68  54
PPM 163977     17:27:03.3 +04:38:29  8.5  1.21  54
PPM 164039     17:29:10.7 +05:52:09  9.2  0.16  54
579062         17:28:38.9 +05:47:05 16.5        54
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 20.9 km RECON observability=0.3 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 04:45:59 -5.0 CT Down 42.0 152.2 Up 04:31:32 - 05:00:26 -2094
Kelowna 04:45:58 -6.0 CT Down 43.0 153.0 Up 04:31:31 - 05:00:25 -2168
Peachland 04:46:00 -5.9 CT Down 43.0 152.6 Up 04:31:33 - 05:00:27 -2169
Victoria 04:46:12 -5.0 CT Down 42.9 147.4 Up 04:31:45 - 05:00:39 -2177
Summerland 04:46:00 -6.0 NT Down 43.2 152.7 Up 04:31:33 - 05:00:27 -2182
Penticton 04:45:59 -6.1 NT Down 43.3 152.8 Up 04:31:32 - 05:00:26 -2189
Oliver 04:46:00 -6.4 NT Down 43.6 152.6 Up 04:31:33 - 05:00:27 -2213
Anarchist Mountain Observatory 04:46:00 -6.6 NT Down 43.8 152.8 Up 04:31:33 - 05:00:27 -2229
Okanogan 04:46:02 -7.0 NT Down 44.3 152.2 Up 04:31:35 - 05:00:29 -2270
Brewster 04:46:03 -7.1 NT Down 44.5 151.8 Up 04:31:36 - 05:00:30 -2285
Sleaford 04:45:13 -9.6 NT Up 43.4 171.6 Up 04:30:46 - 04:59:40 -2285
Manson/Chelan 04:46:05 -7.0 NT Down 44.5 151.3 Up 04:31:38 - 05:00:32 -2291
Wenatchee 04:46:07 -7.3 NT Down 44.9 150.8 Up 04:31:40 - 05:00:34 -2322
Ellensburg 04:46:08 -7.5 NT Down 45.2 150.3 Up 04:31:41 - 05:00:35 -2346
Yakima 04:46:09 -7.7 NT Down 45.5 150.1 Up 04:31:42 - 05:00:36 -2376
Toppenish/White Swan 04:46:09 -8.0 NT Down 45.8 150.2 Up 04:31:42 - 05:00:36 -2395
The Dalles 04:46:12 -8.1 NT Down 46.2 148.8 Up 04:31:45 - 05:00:39 -2435
PNWRO 04:46:05 -9.0 NT Down 46.6 152.1 Up 04:31:38 - 05:00:32 -2455
Maupin 04:46:12 -8.5 NT Down 46.6 148.7 Up 04:31:45 - 05:00:39 -2468
Sisters 04:46:12 -8.8 NT Down 47.1 147.5 Up 04:31:45 - 05:00:39 -2525
Bend 04:46:12 -9.1 NT Down 47.4 147.7 Up 04:31:45 - 05:00:39 -2549
Oregon Observatory 04:46:12 -9.1 NT Down 47.5 147.5 Up 04:31:45 - 05:00:39 -2560
Chiloquin 04:46:23 -9.8 NT Down 48.5 146.2 Up 04:31:56 - 05:00:50 -2647
Klamath Falls 04:46:24 -10.1 NT Down 48.8 146.1 Up 04:31:57 - 05:00:51 -2676
Cedarville 04:46:12 -11.4 NT Up 50.0 147.8 Up 04:31:45 - 05:00:39 -2774
Fall River/Burney 04:46:25 -11.1 NT Up 49.9 145.8 Up 04:31:58 - 05:00:52 -2778
Greenville 04:46:26 -12.0 NT Up 50.9 145.8 Up 04:31:59 - 05:00:53 -2861
Gimple 04:46:25 -12.0 AT Up 50.9 146.0 Up 04:31:58 - 05:00:52 -2864
Quincy 04:46:26 -12.1 AT Up 51.1 145.7 Up 04:31:59 - 05:00:53 -2878
Portola 04:46:25 -12.5 AT Up 51.4 146.3 Up 04:31:58 - 05:00:52 -2900
Reno 04:46:23 -13.0 AT Up 51.9 147.1 Up 04:31:56 - 05:00:50 -2937
Carson City 04:46:23 -13.3 AT Up 52.2 146.8 Up 04:31:56 - 05:00:50 -2967
Gardnerville 04:46:24 -13.5 AT Up 52.4 146.7 Up 04:31:57 - 05:00:51 -2989
Yerington 04:46:22 -13.8 AT Up 52.6 147.6 Up 04:31:55 - 05:00:49 -2999
Hawthorne 04:46:20 -14.4 AT Up 53.2 148.1 Up 04:31:53 - 05:00:47 -3051
Lee Vining 04:46:24 -14.5 AT Up 53.5 147.0 Up 04:31:57 - 05:00:51 -3086
Bishop 04:46:23 -15.3 AT Up 54.3 147.6 Up 04:31:56 - 05:00:50 -3155
Dunrhomin 04:45:28 -19.7 Dark Up 55.2 170.7 Up 04:31:01 - 04:59:55 -3236
Beatty 04:46:12 -16.6 AT Up 55.4 149.8 Up 04:31:45 - 05:00:39 -3239
Nikitin 04:45:28 -19.8 Dark Up 55.4 170.6 Up 04:31:01 - 04:59:55 -3251
CU-SBO 04:45:29 -19.9 Dark Up 55.5 170.5 Up 04:31:02 - 04:59:56 -3255
Wildwood 04:46:30 -17.5 AT Up 56.9 144.7 Up 04:32:03 - 05:00:57 -3433
Patrick 04:46:10 -19.3 Dark Up 57.8 153.5 Up 04:31:43 - 05:00:37 -3441
Laughlin/Bullhead City 04:46:12 -19.0 Dark Up 57.7 152.1 Up 04:31:45 - 05:00:39 -3445
Lake Havasu City 04:46:12 -19.7 Dark Up 58.4 152.1 Up 04:31:45 - 05:00:39 -3511
Idyllwild 04:46:23 -18.9 Dark Up 58.1 147.4 Up 04:31:56 - 05:00:50 -3515
Calipatria 04:46:20 -20.0 Dark Up 59.1 148.9 Up 04:31:53 - 05:00:47 -3602
George/Scottsdale 04:46:04 -21.6 Dark Up 60.0 155.9 Up 04:31:37 - 05:00:31 -3646
Yuma 04:46:12 -20.8 Dark Up 59.9 150.1 Up 04:31:45 - 05:00:39 -3667

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 579062, (2025/07/12 04:46UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 35.17  56
60Bet Oph      17:43:28.3 +04:34:06  2.8  4.19  50
49Sig Oph      17:26:30.9 +04:08:25  4.3  1.68  54
PPM 163977     17:25:47.5 +04:39:44  8.5  1.21  54
PPM 164039     17:27:55.6 +05:53:19  9.2  0.16  54
579062         17:27:23.9 +05:48:16 16.5        54
Positions are for J2000

Event circumstances last updated at 2023/08/21 03:01:34 UT

Marc W. Buie, Southwest Research Institute

RECON