RECON: TNO occultation with 505624

Event between (505624) 14GU53 and star GA0900:04876174 with event index number of 2451489

Geocentric closest approach at 2026/08/03 07:20:57 UTC

J2000 position of star is 16:55:16.9 +00:40:35
Equinox of date position of star is 16:56:31.8 +00:38:20
Stellar brightness G=14.2, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 110 degrees from the moon. Moon is 79% illuminated.
Apparent brightness V=21.7

[RECON map]
Object is 37.4 AU from the Sun and 36.9 AU from the Earth.
Apparent velocity is 13.7 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 121 seconds.
The 1-sigma cross-track error in the shadow position is 1384 km.
The sky-plane scale is 26773.9 km/arcsec.

The object has an absolute magnitude Hv=5.8
Diameter=398.1 km assuming a 5% albedo -- 29.7 sec chord
Diameter=162.5 km assuming a 30% albedo -- 12.1 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 505624, (2026/08/03 07:23UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:02.5 -26:29:19  0.9 27.82 116
1Del Oph       16:15:44.5 -03:45:38  2.7 11.12 121
19 Oph         16:48:30.3 +02:01:07  6.1  2.46 112
PPM 163235     16:54:44.9 +01:18:23  8.0  0.82 111
PPM 163283     16:57:29.8 +01:04:20  9.8  0.49 110
PPM 163289     16:57:50.3 +00:38:50 10.7  0.30 110
505624         16:56:38.3 +00:38:08 14.2       110
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 30.1 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 07:14:33 -20.9 Dark Up 26.5 234.0 Low 07:03:58 - 07:25:09 -4806
Kelowna 07:14:28 -21.8 Dark Up 26.5 235.1 Low 07:03:53 - 07:25:04 -4908
Peachland 07:14:33 -21.8 Dark Up 26.8 234.9 Low 07:03:57 - 07:25:08 -4910
Victoria 07:14:42 -22.4 Dark Up 29.4 231.9 Low 07:04:06 - 07:25:17 -4919
Summerland 07:14:32 -22.0 Dark Up 26.8 235.0 Low 07:03:56 - 07:25:07 -4927
Penticton 07:14:32 -22.1 Dark Up 26.8 235.2 Low 07:03:56 - 07:25:07 -4936
Oliver 07:14:32 -22.4 Dark Up 27.0 235.3 Low 07:03:56 - 07:25:07 -4970
Anarchist Mountain Observatory 07:14:30 -22.6 Dark Up 27.0 235.6 Low 07:03:54 - 07:25:05 -4992
Sleaford 07:14:01 -20.4 Dark Up 18.1 246.5 Really Low 07:03:26 - 07:24:37 -5009
Okanogan 07:14:30 -23.2 Dark Up 27.5 235.6 Low 07:03:54 - 07:25:05 -5047
Brewster 07:14:32 -23.5 Dark Up 27.7 235.6 Low 07:03:56 - 07:25:07 -5067
Manson/Chelan 07:14:33 -23.6 Dark Up 28.0 235.3 Low 07:03:58 - 07:25:09 -5077
Wenatchee 07:14:33 -24.0 Dark Up 28.4 235.4 Low 07:03:58 - 07:25:09 -5117
Ellensburg 07:14:33 -24.4 Dark Up 28.8 235.3 Low 07:03:58 - 07:25:09 -5150
Yakima 07:14:33 -24.8 Dark Up 29.0 235.5 Low 07:03:58 - 07:25:09 -5189
Toppenish/White Swan 07:14:33 -25.0 Dark Up 29.0 235.8 Low 07:03:58 - 07:25:09 -5215
The Dalles 07:14:34 -25.6 Dark Up 29.9 235.4 Low 07:03:59 - 07:25:10 -5265
PNWRO 07:14:26 -25.6 Dark Up 28.4 237.3 Low 07:03:51 - 07:25:02 -5296
Maupin 07:14:33 -26.1 Dark Up 30.1 235.7 Up 07:03:57 - 07:25:08 -5309
Sisters 07:14:36 -26.8 Dark Up 30.9 235.7 Up 07:04:00 - 07:25:11 -5379
Bend 07:14:34 -27.1 Dark Up 30.9 236.0 Up 07:03:58 - 07:25:09 -5410
Oregon Observatory 07:14:35 -27.3 Dark Up 31.0 236.0 Up 07:04:00 - 07:25:11 -5423
Chiloquin 07:14:37 -28.4 Dark Up 32.0 236.3 Up 07:04:01 - 07:25:12 -5538
Klamath Falls 07:14:36 -28.8 Dark Up 32.1 236.5 Up 07:04:01 - 07:25:12 -5574
Cedarville 07:14:30 -29.8 Dark Up 31.5 238.3 Up 07:03:54 - 07:25:05 -5696
Fall River/Burney 07:14:38 -30.0 Dark Up 32.5 237.5 Up 07:04:02 - 07:25:13 -5703
Greenville 07:14:33 -31.0 Dark Up 32.7 238.4 Up 07:03:58 - 07:25:09 -5808
Gimple 07:14:35 -31.0 Dark Up 32.7 238.5 Up 07:04:00 - 07:25:11 -5811
Quincy 07:14:33 -31.2 Dark Up 32.9 238.5 Up 07:03:58 - 07:25:09 -5828
Portola 07:14:33 -31.4 Dark Up 32.6 239.0 Up 07:03:58 - 07:25:09 -5856
Reno 07:14:32 -31.8 Dark Up 32.3 239.7 Up 07:03:56 - 07:25:07 -5905
Carson City 07:14:32 -32.1 Dark Up 32.5 239.9 Up 07:03:56 - 07:25:07 -5941
Gardnerville 07:14:32 -32.4 Dark Up 32.6 240.1 Up 07:03:56 - 07:25:07 -5967
Yerington 07:14:28 -32.4 Dark Up 32.2 240.6 Up 07:03:53 - 07:25:04 -5982
Hawthorne 07:14:28 -33.0 Dark Up 32.0 241.3 Up 07:03:53 - 07:25:04 -6047
Lee Vining 07:14:29 -33.4 Dark Up 32.6 241.2 Up 07:03:54 - 07:25:05 -6087
Bishop 07:14:27 -34.1 Dark Up 32.4 242.1 Up 07:03:52 - 07:25:03 -6172
Dunrhomin 07:13:49 -32.3 Dark Up 21.9 251.1 Low 07:03:13 - 07:24:24 -6249
Nikitin 07:13:49 -32.4 Dark Up 22.0 251.1 Low 07:03:14 - 07:24:25 -6268
CU-SBO 07:13:47 -32.5 Dark Up 22.1 251.1 Low 07:03:11 - 07:24:22 -6273
Beatty 07:14:24 -34.9 Dark Up 31.5 243.8 Up 07:03:49 - 07:25:00 -6273
Wildwood 07:14:32 -37.3 Dark Up 34.0 243.9 Up 07:03:56 - 07:25:07 -6498
Patrick 07:14:14 -36.7 Dark Up 30.0 246.8 Low 07:03:38 - 07:24:49 -6519
Laughlin/Bullhead City 07:14:15 -36.9 Dark Up 30.6 246.4 Up 07:03:39 - 07:24:50 -6522
Idyllwild 07:14:23 -38.0 Dark Up 32.8 245.6 Up 07:03:47 - 07:24:58 -6599
Lake Havasu City 07:14:16 -37.6 Dark Up 30.7 247.0 Up 07:03:40 - 07:24:51 -6600
Calipatria 07:14:23 -38.8 Dark Up 32.1 246.8 Up 07:03:47 - 07:24:58 -6702
George/Scottsdale 07:14:08 -38.6 Dark Up 29.1 249.2 Low 07:03:32 - 07:24:43 -6758
Yuma 07:14:21 -39.3 Dark Up 31.6 247.8 Up 07:03:45 - 07:24:56 -6777

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 505624, (2026/08/03 07:23UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 27.82 116
1Del Oph       16:14:20.7 -03:41:43  2.7 11.12 121
19 Oph         16:47:09.7 +02:03:52  6.1  2.46 112
PPM 163235     16:53:23.9 +01:20:54  8.0  0.82 111
PPM 163283     16:56:08.7 +01:06:46  9.8  0.49 110
PPM 163289     16:56:28.9 +00:41:14 10.7  0.30 110
505624         16:55:16.9 +00:40:35 14.2       110
Positions are for J2000

Event circumstances last updated at 2024/06/19 21:32:19 UT

Marc W. Buie, Southwest Research Institute

RECON