RECON: TNO occultation with 444745

Event between (444745) 07JF43 and star GA0780:05960988 with event index number of 2409545

Geocentric closest approach at 2026/06/22 04:20:06 UTC

J2000 position of star is 17:11:00.3 -10:49:43
Equinox of date position of star is 17:12:21.7 -10:51:25
Stellar brightness G=13.8, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 75 degrees from the moon. Moon is 53% illuminated.
Apparent brightness V=21.0

[RECON map]
Object is 35.9 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 63 seconds.
The 1-sigma cross-track error in the shadow position is 1269 km.
The sky-plane scale is 25338.7 km/arcsec.

The object has an absolute magnitude Hv=5.4
Diameter=494.3 km assuming a 5% albedo -- 21.2 sec chord
Diameter=201.8 km assuming a 30% albedo -- 8.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 444745, (2026/06/22 04:19UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:02.1 -26:29:18  0.9 18.43  66
35Eta Oph      17:11:53.9 -15:45:21  2.6  4.90  75
PPM 232685     17:11:15.9 -10:33:20  5.6  0.42  74
PPM 232755     17:13:59.3 -10:18:29  7.8  0.67  75
PPM 232704     17:12:04.7 -10:54:30  8.8  0.11  75
444745         17:12:28.3 -10:51:33 13.8        75
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 0.0 km RECON observability=0.2 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 04:21:39 -6.4 NT Up 22.7 150.1 Low 04:15:56 - 04:27:22 6412
Kamloops 04:22:16 -1.3 CT Up 18.4 136.0 Really Low 04:16:33 - 04:27:59 6170
Kelowna 04:22:16 -2.3 CT Up 19.4 136.6 Really Low 04:16:33 - 04:27:59 6131
Peachland 04:22:17 -2.2 CT Up 19.4 136.3 Really Low 04:16:34 - 04:28:00 6121
Summerland 04:22:17 -2.4 CT Up 19.5 136.4 Really Low 04:16:34 - 04:28:00 6113
Penticton 04:22:17 -2.5 CT Up 19.6 136.4 Really Low 04:16:34 - 04:28:00 6110
Oliver 04:22:18 -2.7 CT Up 19.9 136.4 Really Low 04:16:35 - 04:28:01 6088
Anarchist Mountain Observatory 04:22:18 -2.9 CT Up 20.1 136.5 Low 04:16:35 - 04:28:01 6080
Okanogan 04:22:19 -3.3 CT Up 20.4 136.1 Low 04:16:36 - 04:28:02 6036
Brewster 04:22:21 -3.3 CT Up 20.5 135.9 Low 04:16:38 - 04:28:04 6015
Manson/Chelan 04:22:22 -3.3 CT Up 20.5 135.5 Low 04:16:39 - 04:28:05 5997
Victoria 04:22:28 -1.2 CT Up 18.5 132.7 Really Low 04:16:45 - 04:28:11 5996
Wenatchee 04:22:24 -3.5 CT Up 20.8 135.2 Low 04:16:41 - 04:28:07 5964
Ellensburg 04:22:24 -3.7 CT Up 21.0 134.9 Low 04:16:41 - 04:28:07 5934
Yakima 04:22:25 -3.9 CT Up 21.3 134.8 Low 04:16:42 - 04:28:08 5906
Toppenish/White Swan 04:22:26 -4.2 CT Up 21.5 134.9 Low 04:16:43 - 04:28:09 5894
PNWRO 04:22:23 -5.2 CT Up 22.5 136.1 Low 04:16:40 - 04:28:06 5889
The Dalles 04:22:29 -4.3 CT Up 21.6 134.0 Low 04:16:46 - 04:28:12 5830
Maupin 04:22:29 -4.6 CT Up 22.0 133.9 Low 04:16:46 - 04:28:12 5803
Sisters 04:22:33 -4.9 CT Up 22.4 133.2 Low 04:16:50 - 04:28:16 5735
Bend 04:22:33 -5.2 CT Up 22.6 133.4 Low 04:16:50 - 04:28:16 5722
Oregon Observatory 04:22:33 -5.2 CT Up 22.7 133.2 Low 04:16:50 - 04:28:16 5708
Dunrhomin 04:21:54 -16.1 AT Up 33.1 147.8 Up 04:16:11 - 04:27:37 5660
Nikitin 04:21:54 -16.3 AT Up 33.2 147.7 Up 04:16:11 - 04:27:37 5646
CU-SBO 04:21:54 -16.3 AT Up 33.3 147.6 Up 04:16:11 - 04:27:37 5640
Chiloquin 04:22:37 -5.9 CT Up 23.4 132.5 Low 04:16:54 - 04:28:20 5607
Klamath Falls 04:22:37 -6.1 NT Up 23.7 132.4 Low 04:16:54 - 04:28:20 5583
Cedarville 04:22:34 -7.5 NT Up 25.0 133.6 Low 04:16:51 - 04:28:17 5555
Fall River/Burney 04:22:39 -7.1 NT Up 24.7 132.4 Low 04:16:56 - 04:28:22 5501
Gimple 04:22:39 -8.0 NT Up 25.6 132.5 Low 04:16:56 - 04:28:22 5440
Greenville 04:22:39 -7.9 NT Up 25.5 132.5 Low 04:16:56 - 04:28:22 5438
Quincy 04:22:40 -8.1 NT Up 25.7 132.4 Low 04:16:57 - 04:28:23 5423
Portola 04:22:39 -8.4 NT Up 26.0 132.8 Low 04:16:56 - 04:28:22 5421
Reno 04:22:38 -9.0 NT Up 26.6 133.3 Low 04:16:55 - 04:28:21 5410
Carson City 04:22:38 -9.2 NT Up 26.8 133.2 Low 04:16:55 - 04:28:21 5382
Yerington 04:22:36 -9.7 NT Up 27.3 133.6 Low 04:16:53 - 04:28:19 5377
Gardnerville 04:22:38 -9.4 NT Up 27.0 133.1 Low 04:16:55 - 04:28:21 5364
Hawthorne 04:22:36 -10.3 NT Up 27.9 133.9 Low 04:16:53 - 04:28:19 5348
Lee Vining 04:22:38 -10.4 NT Up 28.1 133.3 Low 04:16:55 - 04:28:21 5297
Bishop 04:22:37 -11.3 NT Up 28.9 133.7 Low 04:16:54 - 04:28:20 5260
Beatty 04:22:33 -12.5 AT Up 30.1 135.0 Up 04:16:50 - 04:28:16 5247
Patrick 04:22:27 -15.2 AT Up 32.8 137.1 Up 04:16:44 - 04:28:10 5170
Laughlin/Bullhead City 04:22:30 -15.0 AT Up 32.6 136.3 Up 04:16:47 - 04:28:13 5139
Lake Havasu City 04:22:30 -15.6 AT Up 33.2 136.3 Up 04:16:47 - 04:28:13 5088
George/Scottsdale 04:22:23 -17.6 AT Up 35.2 138.3 Up 04:16:40 - 04:28:06 5060
Wildwood 04:22:43 -13.3 AT Up 31.0 132.2 Up 04:17:00 - 04:28:26 4990
Idyllwild 04:22:39 -14.7 AT Up 32.4 133.7 Up 04:16:56 - 04:28:22 4989
Calipatria 04:22:35 -15.8 AT Up 33.5 134.5 Up 04:16:52 - 04:28:18 4955
Yuma 04:22:33 -16.7 AT Up 34.3 135.1 Up 04:16:50 - 04:28:16 4933

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 444745, (2026/06/22 04:19UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.43  66
35Eta Oph      17:10:22.7 -15:43:29  2.6  4.90  75
PPM 232685     17:09:48.0 -10:31:26  5.6  0.42  74
PPM 232755     17:12:31.6 -10:16:41  7.8  0.67  75
PPM 232704     17:10:36.7 -10:52:38  8.8  0.11  75
444745         17:11:00.3 -10:49:43 13.8        75
Positions are for J2000

Event circumstances last updated at 2024/06/19 21:29:33 UT

Marc W. Buie, Southwest Research Institute

RECON