RECON: TNO occultation with 523761

Event between (523761) 14WU509 and star GA0920:01613655 with event index number of 2681470

Geocentric closest approach at 2029/01/21 03:38:17 UTC

J2000 position of star is 06:38:01.7 +03:04:32
Equinox of date position of star is 06:39:18.7 +03:03:09
Stellar brightness G=12.5, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 89 degrees from the moon. Moon is 35% illuminated.
Apparent brightness V=22.1

[RECON map]
Object is 40.1 AU from the Sun and 39.2 AU from the Earth.
Apparent velocity is 23.8 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 381 seconds.
The 1-sigma cross-track error in the shadow position is 2309 km.
The sky-plane scale is 28454.3 km/arcsec.

The object has an absolute magnitude Hv=6.0
Diameter=398.1 km assuming a 5% albedo -- 15.9 sec chord
Diameter=162.5 km assuming a 30% albedo -- 6.5 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 523761, (2029/01/21 03:38UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:44.7 +07:24:36  0.4 11.51  78
Alhena         06:39:23.4 +16:22:19  1.9 13.32  86
PPM 150897     06:39:11.4 +02:40:37  6.2  0.38  89
PPM 150937     06:40:04.9 +02:53:32  8.2  0.20  89
PPM 150881     06:38:48.3 +02:57:59  9.2  0.20  89
PPM 150928     06:39:52.5 +03:04:00 10.9  0.08  89
523761         06:39:33.1 +03:02:54 12.5        89
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 2.4 sigma about the mid-time.
The median site spacing is 30.5 km RECON observability=1.0 and success probability=4.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 03:40:21 -37.6 Dark Up 35.2 143.0 Up 03:25:21 - 03:55:21 5916
Kamloops 03:40:55 -29.1 Dark Up 29.9 127.1 Low 03:25:55 - 03:55:55 5655
Kelowna 03:40:55 -29.7 Dark Up 30.8 127.6 Up 03:25:55 - 03:55:55 5594
Peachland 03:40:56 -29.5 Dark Up 30.7 127.3 Up 03:25:56 - 03:55:56 5582
Summerland 03:40:56 -29.6 Dark Up 30.9 127.3 Up 03:25:56 - 03:55:56 5570
Penticton 03:40:56 -29.7 Dark Up 31.0 127.4 Up 03:25:56 - 03:55:56 5565
Oliver 03:40:56 -29.7 Dark Up 31.2 127.2 Up 03:25:56 - 03:55:56 5534
Anarchist Mountain Observatory 03:40:57 -29.9 Dark Up 31.4 127.3 Up 03:25:57 - 03:55:57 5521
Okanogan 03:40:58 -29.8 Dark Up 31.7 126.8 Up 03:25:58 - 03:55:58 5463
Victoria 03:41:06 -27.2 Dark Up 29.5 123.2 Low 03:26:06 - 03:56:06 5443
Brewster 03:40:59 -29.6 Dark Up 31.7 126.5 Up 03:25:59 - 03:55:59 5437
Manson/Chelan 03:41:00 -29.4 Dark Up 31.6 126.0 Up 03:26:00 - 03:56:00 5415
Wenatchee 03:41:01 -29.3 Dark Up 31.8 125.6 Up 03:26:01 - 03:56:01 5372
Ellensburg 03:41:02 -29.2 Dark Up 31.9 125.2 Up 03:26:02 - 03:56:02 5333
Yakima 03:41:02 -29.2 Dark Up 32.2 124.9 Up 03:26:02 - 03:56:02 5296
Toppenish/White Swan 03:41:03 -29.3 Dark Up 32.4 125.0 Up 03:26:03 - 03:56:03 5278
PNWRO 03:41:00 -30.3 Dark Up 33.4 126.3 Up 03:26:00 - 03:56:00 5260
The Dalles 03:41:05 -28.8 Dark Up 32.4 123.8 Up 03:26:05 - 03:56:05 5201
Maupin 03:41:06 -28.8 Dark Up 32.7 123.7 Up 03:26:06 - 03:56:06 5163
Sisters 03:41:09 -28.5 Dark Up 32.9 122.8 Up 03:26:09 - 03:56:09 5078
Bend 03:41:08 -28.7 Dark Up 33.2 122.9 Up 03:26:08 - 03:56:08 5059
Oregon Observatory 03:41:09 -28.6 Dark Up 33.2 122.7 Up 03:26:09 - 03:56:09 5041
Chiloquin 03:41:11 -28.3 Dark Up 33.6 121.6 Up 03:26:11 - 03:56:11 4914
Dunrhomin 03:40:29 -40.7 Dark Up 44.7 137.5 Up 03:25:29 - 03:55:29 4895
Klamath Falls 03:41:11 -28.3 Dark Up 33.9 121.4 Up 03:26:11 - 03:56:11 4883
Nikitin 03:40:29 -40.8 Dark Up 44.8 137.4 Up 03:25:29 - 03:55:29 4878
CU-SBO 03:40:29 -40.7 Dark Up 44.8 137.2 Up 03:25:29 - 03:55:29 4871
Cedarville 03:41:09 -29.5 Dark Up 35.2 122.5 Up 03:26:09 - 03:56:09 4833
Fall River/Burney 03:41:12 -28.6 Dark Up 34.7 121.1 Up 03:26:12 - 03:56:12 4774
Gimple 03:41:12 -28.9 Dark Up 35.5 121.1 Up 03:26:12 - 03:56:12 4692
Greenville 03:41:13 -28.9 Dark Up 35.5 121.0 Up 03:26:13 - 03:56:13 4692
Quincy 03:41:13 -28.9 Dark Up 35.6 120.9 Up 03:26:13 - 03:56:13 4672
Portola 03:41:11 -29.2 Dark Up 36.0 121.2 Up 03:26:11 - 03:56:11 4665
Reno 03:41:11 -29.7 Dark Up 36.5 121.7 Up 03:26:11 - 03:56:11 4646
Carson City 03:41:12 -29.7 Dark Up 36.7 121.5 Up 03:26:12 - 03:56:12 4612
Yerington 03:41:10 -30.2 Dark Up 37.2 121.9 Up 03:26:10 - 03:56:10 4599
Gardnerville 03:41:12 -29.7 Dark Up 36.9 121.3 Up 03:26:12 - 03:56:12 4588
Hawthorne 03:41:09 -30.6 Dark Up 37.8 122.1 Up 03:26:09 - 03:56:09 4560
Lee Vining 03:41:10 -30.2 Dark Up 37.8 121.3 Up 03:26:10 - 03:56:10 4500
Bishop 03:41:09 -30.7 Dark Up 38.6 121.6 Up 03:26:09 - 03:56:09 4449
Beatty 03:41:05 -32.0 Dark Up 40.0 122.8 Up 03:26:05 - 03:56:05 4422
Patrick 03:40:58 -34.3 Dark Up 42.7 124.5 Up 03:25:58 - 03:55:58 4310
Laughlin/Bullhead City 03:41:00 -33.7 Dark Up 42.4 123.6 Up 03:26:00 - 03:56:00 4277
Lake Havasu City 03:41:00 -33.9 Dark Up 42.9 123.4 Up 03:26:00 - 03:56:00 4213
George/Scottsdale 03:40:54 -35.9 Dark Up 45.0 125.2 Up 03:25:54 - 03:55:54 4167
Wildwood 03:41:13 -30.4 Dark Up 40.1 119.1 Up 03:26:13 - 03:56:13 4120
Idyllwild 03:41:08 -31.9 Dark Up 41.7 120.5 Up 03:26:08 - 03:56:08 4106
Calipatria 03:41:04 -32.8 Dark Up 42.8 121.1 Up 03:26:04 - 03:56:04 4059
Yuma 03:41:02 -33.6 Dark Up 43.7 121.6 Up 03:26:02 - 03:56:02 4027

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 523761, (2029/01/21 03:38UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 11.51  78
Alhena         06:37:42.8 +16:23:56  1.9 13.32  86
PPM 150897     06:37:40.3 +02:42:14  6.2  0.38  89
PPM 150937     06:38:33.6 +02:55:12  8.2  0.20  89
PPM 150881     06:37:16.9 +02:59:35  9.2  0.20  89
PPM 150928     06:38:21.1 +03:05:39 10.9  0.08  89
523761         06:38:01.7 +03:04:32 12.5        89
Positions are for J2000

Event circumstances last updated at 2024/06/25 21:30:44 UT

Marc W. Buie, Southwest Research Institute

RECON