RECON: TNO occultation with 579246

Event between (579246) 14OX415 and star GA0800:06940314 with event index number of 2558250

Geocentric closest approach at 2025/02/23 12:25:24 UTC

J2000 position of star is 17:46:56.3 -09:24:02
Equinox of date position of star is 17:48:08.3 -09:24:26
Stellar brightness G=15.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 22 degrees from the moon. Moon is 24% illuminated.
TNO apparent brightness V=22.6

[RECON map]
TNO is 28.8 AU from the Sun and 29.2 AU from the Earth.
The TNO is moving 18.4 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 314 seconds.
The 1-sigma cross-track error in the shadow position is 1952 km.
The sky-plane scale is 21153.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.8
Diameter=162.2 km assuming a 5% albedo -- 8.8 sec chord
Diameter=66.2 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 579246, (2025/02/23 12:25UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:57.2 -26:29:08  0.9 25.03  27
35Eta Oph      17:11:49.3 -15:45:15  2.6 10.93  23
PPM 233705     17:54:27.4 -10:54:13  6.1  2.13  20
PPM 201003     17:46:30.9 -09:49:26  8.4  0.61  22
PPM 201044     17:48:27.5 -09:34:21  9.7  0.17  22
579246         17:48:19.2 -09:24:29 15.3        22
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 2.9 sigma about the mid-time.
The median site spacing is 16.2 km RECON observability=0.7 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)
Clarence Fulton 12:24:03 -24.3 Dark Down 18.0 131.3 Really Low 12:09:03 - 12:39:03 11311
Kelowna 12:24:02 -24.5 Dark Down 18.2 131.1 Really Low 12:09:02 - 12:39:02 11295
Peachland 12:23:59 -24.7 Dark Down 18.1 130.8 Really Low 12:08:59 - 12:38:59 11292
Summerland 12:23:59 -24.7 Dark Down 18.3 130.8 Really Low 12:08:59 - 12:38:59 11285
Penticton 12:24:00 -24.6 Dark Down 18.4 130.9 Really Low 12:09:00 - 12:39:00 11282
Oliver 12:23:59 -24.7 Dark Down 18.6 130.8 Really Low 12:08:59 - 12:38:59 11267
Anarchist Mountain Observatory 12:23:58 -24.6 Dark Down 18.8 130.9 Really Low 12:08:58 - 12:38:58 11259
Victoria 12:23:45 -27.4 Dark Down 17.0 127.2 Really Low 12:08:45 - 12:38:45 11253
Tonasket 12:23:57 -24.8 Dark Down 19.0 130.8 Really Low 12:08:57 - 12:38:57 11245
Okanogan 12:23:55 -24.9 Dark Down 19.1 130.6 Really Low 12:08:55 - 12:38:55 11230
Brewster 12:23:52 -25.1 Dark Down 19.2 130.3 Really Low 12:08:52 - 12:38:52 11219
Manson/Chelan 12:23:51 -25.4 Dark Down 19.1 129.9 Really Low 12:08:51 - 12:38:51 11211
Wenatchee 12:23:50 -25.7 Dark Down 19.3 129.6 Really Low 12:08:50 - 12:38:50 11190
Ellensburg 12:23:46 -25.9 Dark Down 19.5 129.3 Really Low 12:08:46 - 12:38:46 11172
Yakima 12:23:45 -26.0 Dark Down 19.7 129.2 Really Low 12:08:45 - 12:38:45 11152
Toppenish/White Swan 12:23:44 -26.0 Dark Down 20.0 129.2 Really Low 12:08:44 - 12:38:44 11141
Pasco 12:23:47 -25.1 Dark Down 20.7 130.4 Low 12:08:47 - 12:38:47 11128
Goldendale 12:23:41 -26.4 Dark Down 20.1 128.7 Low 12:08:41 - 12:38:41 11116
PNWRO 12:23:49 -25.0 Dark Down 21.0 130.5 Low 12:08:49 - 12:38:49 11115
The Dalles 12:23:39 -26.7 Dark Down 20.0 128.3 Really Low 12:08:39 - 12:38:39 11106
Maupin 12:23:38 -26.8 Dark Down 20.3 128.3 Low 12:08:38 - 12:38:38 11085
Sisters 12:23:31 -27.3 Dark Down 20.6 127.6 Low 12:08:31 - 12:38:31 11042
Redmond 12:23:33 -27.0 Dark Down 20.8 127.9 Low 12:08:33 - 12:38:33 11039
Bend 12:23:32 -27.2 Dark Down 20.9 127.7 Low 12:08:32 - 12:38:32 11029
Oregon Observatory 12:23:30 -27.3 Dark Down 20.9 127.6 Low 12:08:30 - 12:38:30 11021
La Pine/Gilchrist 12:23:30 -27.4 Dark Down 21.0 127.4 Low 12:08:30 - 12:38:30 11010
North Lake 12:23:31 -27.1 Dark Up 21.6 127.8 Low 12:08:31 - 12:38:31 10984
Paisley 12:23:28 -27.0 Dark Up 22.1 128.0 Low 12:08:28 - 12:38:28 10952
Chiloquin 12:23:26 -28.0 Dark Down 21.4 126.8 Low 12:08:26 - 12:38:26 10952
Klamath Falls 12:23:23 -28.0 Dark Up 21.7 126.7 Low 12:08:23 - 12:38:23 10932
Lakeview 12:23:26 -26.9 Dark Up 22.5 127.9 Low 12:08:26 - 12:38:26 10923
Cedarville 12:23:25 -27.0 Dark Up 23.1 127.9 Low 12:08:25 - 12:38:25 10886
Fall River/Burney 12:23:20 -28.0 Dark Up 22.6 126.7 Low 12:08:20 - 12:38:20 10864
Susanville 12:23:19 -27.5 Dark Up 23.4 127.1 Low 12:08:19 - 12:38:19 10824
Greenville 12:23:19 -27.8 Dark Up 23.4 126.7 Low 12:08:19 - 12:38:19 10809
Gimple 12:23:16 -27.8 Dark Up 23.5 126.8 Low 12:08:16 - 12:38:16 10808
Quincy 12:23:16 -27.9 Dark Up 23.5 126.6 Low 12:08:16 - 12:38:16 10797
Portola 12:23:18 -27.5 Dark Up 23.9 127.0 Low 12:08:18 - 12:38:18 10787
Reno 12:23:19 -27.1 Dark Up 24.5 127.5 Low 12:08:19 - 12:38:19 10768
Carson City 12:23:18 -27.1 Dark Up 24.7 127.4 Low 12:08:18 - 12:38:18 10746
Gardnerville 12:23:16 -27.1 Dark Up 24.9 127.3 Low 12:08:16 - 12:38:16 10731
Yerington 12:23:21 -26.7 Dark Up 25.2 127.8 Low 12:08:21 - 12:38:21 10730
Hawthorne 12:23:20 -26.3 Dark Up 25.8 128.1 Low 12:08:20 - 12:38:20 10699
Dunrhomin 12:24:16 -15.7 AT Up 32.1 141.7 Up 12:09:16 - 12:39:16 10681
Lee Vining 12:23:15 -26.8 Dark Up 25.8 127.5 Low 12:08:15 - 12:38:15 10667
Tonopah 12:23:22 -25.3 Dark Up 27.0 129.2 Low 12:08:22 - 12:38:22 10661
Bishop 12:23:17 -26.3 Dark Up 26.7 127.8 Low 12:08:17 - 12:38:17 10624
Beatty 12:23:19 -25.1 Dark Up 28.0 129.1 Low 12:08:19 - 12:38:19 10583
Indian Springs 12:23:22 -24.3 Dark Up 28.9 129.9 Low 12:08:22 - 12:38:22 10554
Henderson 12:23:23 -23.8 Dark Up 29.6 130.3 Low 12:08:23 - 12:38:23 10513
CPSLO 12:23:01 -28.5 Dark Up 26.4 125.1 Low 12:08:01 - 12:38:01 10503
Patrick 12:23:26 -22.9 Dark Up 30.8 131.0 Up 12:08:26 - 12:38:26 10463
Laughlin/Bullhead City 12:23:21 -23.5 Dark Up 30.5 130.3 Up 12:08:21 - 12:38:21 10452
Kingman/Dolan Springs 12:23:24 -23.1 Dark Up 30.8 130.7 Up 12:08:24 - 12:38:24 10449
Mohave Valley 12:23:20 -23.5 Dark Up 30.6 130.1 Up 12:08:20 - 12:38:20 10433
Wildwood 12:23:01 -27.0 Dark Up 28.5 126.3 Low 12:08:01 - 12:38:01 10409
Lake Havasu City 12:23:21 -23.4 Dark Up 31.1 130.2 Up 12:08:21 - 12:38:21 10404
Parker 12:23:18 -23.4 Dark Up 31.3 130.0 Up 12:08:18 - 12:38:18 10379
Idyllwild 12:23:08 -25.4 Dark Up 30.0 127.7 Low 12:08:08 - 12:38:08 10372
Blythe 12:23:17 -23.7 Dark Up 31.4 129.5 Up 12:08:17 - 12:38:17 10345
George/Scottsdale 12:23:27 -21.3 Dark Up 33.1 132.1 Up 12:08:27 - 12:38:27 10328
Calipatria 12:23:12 -24.5 Dark Up 31.1 128.4 Up 12:08:12 - 12:38:12 10319
Yuma 12:23:12 -23.8 Dark Up 32.0 129.0 Up 12:08:12 - 12:38:12 10281

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 579246, (2025/02/23 12:25UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 25.03  27
35Eta Oph      17:10:22.7 -15:43:29  2.6 10.93  23
PPM 233705     17:53:03.6 -10:53:59  6.1  2.13  20
PPM 201003     17:45:07.7 -09:48:55  8.4  0.61  22
PPM 201044     17:47:04.5 -09:33:54  9.7  0.17  22
579246         17:46:56.3 -09:24:02 15.3        22
Positions are for J2000

Event circumstances last updated at 2021/11/07 01:32:15 UT

Marc W. Buie, Southwest Research Institute

RECON