RECON: TNO occultation with 523760

Event between (523760) 14WQ509 and star GA1200:03086217 with event index number of 2362315

Geocentric closest approach at 2024/11/22 12:44:02 UTC

J2000 position of star is 07:50:21.2 +30:39:50
Equinox of date position of star is 07:51:52.4 +30:36:04
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 31 degrees from the moon. Moon is 55% illuminated.
Apparent brightness V=22.2

[RECON map]
Object is 43.0 AU from the Sun and 42.4 AU from the Earth.
Apparent velocity is 14.5 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 269 seconds.
The 1-sigma cross-track error in the shadow position is 1692 km.
The sky-plane scale is 30724.2 km/arcsec.

The object has an absolute magnitude Hv=5.8
Diameter=411.2 km assuming a 5% albedo -- 29.1 sec chord
Diameter=167.9 km assuming a 30% albedo -- 11.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 523760, (2024/11/22 12:55UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:50.3 +27:57:50  1.1  2.86  32
75Sig Gem      07:44:51.8 +28:49:17  5.3  2.35  32
PPM 073179     07:53:04.0 +30:27:54  8.2  0.28  31
PPM 073143     07:50:58.0 +30:39:14  9.2  0.21  32
PPM 073160     07:52:09.8 +30:34:49 10.2  0.06  31
523760         07:51:55.2 +30:35:57 16.9        31
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 3.3 sigma about the mid-time.
The median site spacing is 17.6 km RECON observability=0.9 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 12:43:19 -16.9 AT Up 59.7 236.5 Up 12:28:19 - 12:58:19 12268
Kamloops 12:44:04 -25.5 Dark Up 67.1 215.0 Up 12:29:04 - 12:59:04 11571
Kelowna 12:43:53 -25.0 Dark Up 67.4 217.8 Up 12:28:53 - 12:58:53 11540
Peachland 12:43:58 -25.1 Dark Up 67.6 217.5 Up 12:28:58 - 12:58:58 11519
Summerland 12:43:54 -25.1 Dark Up 67.7 217.8 Up 12:28:54 - 12:58:54 11511
Penticton 12:43:53 -25.0 Dark Up 67.7 218.1 Up 12:28:53 - 12:58:53 11510
Oliver 12:43:51 -25.0 Dark Up 68.0 218.7 Up 12:28:51 - 12:58:51 11481
Anarchist Mountain Observatory 12:43:51 -24.9 Dark Up 68.0 219.3 Up 12:28:51 - 12:58:51 11475
Dunrhomin 12:42:07 -13.8 AT Up 64.1 257.7 Up 12:27:07 - 12:57:07 11439
Nikitin 12:42:09 -13.8 AT Up 64.1 258.0 Up 12:27:09 - 12:57:09 11423
CU-SBO 12:42:03 -13.9 AT Up 64.2 258.1 Up 12:27:03 - 12:57:03 11414
Okanogan 12:43:49 -25.0 Dark Up 68.6 219.9 Up 12:28:49 - 12:58:49 11412
Brewster 12:43:48 -25.1 Dark Up 68.9 219.9 Up 12:28:48 - 12:58:48 11381
Manson/Chelan 12:43:49 -25.4 Dark Up 69.2 219.5 Up 12:28:49 - 12:58:49 11348
Wenatchee 12:43:48 -25.4 Dark Up 69.7 219.9 Up 12:28:48 - 12:58:48 11301
Victoria 12:44:05 -27.5 Dark Up 69.9 211.5 Up 12:29:05 - 12:59:05 11270
Ellensburg 12:43:48 -25.6 Dark Up 70.1 220.2 Up 12:28:48 - 12:58:48 11257
PNWRO 12:43:34 -24.4 Dark Up 70.1 225.4 Up 12:28:34 - 12:58:34 11244
Yakima 12:43:44 -25.6 Dark Up 70.4 220.8 Up 12:28:44 - 12:58:44 11222
Toppenish/White Swan 12:43:41 -25.5 Dark Up 70.5 221.6 Up 12:28:41 - 12:58:41 11211
The Dalles 12:43:44 -26.0 Dark Up 71.4 221.3 Up 12:28:44 - 12:58:44 11110
Maupin 12:43:39 -25.9 Dark Up 71.7 222.4 Up 12:28:39 - 12:58:39 11079
Sisters 12:43:37 -26.2 Dark Up 72.6 223.1 Up 12:28:37 - 12:58:37 10981
Bend 12:43:36 -26.0 Dark Up 72.6 224.2 Up 12:28:36 - 12:58:36 10972
Oregon Observatory 12:43:36 -26.1 Dark Up 72.8 224.3 Up 12:28:36 - 12:58:36 10951
Chiloquin 12:43:32 -26.3 Dark Up 74.0 226.4 Up 12:28:32 - 12:58:32 10817
Cedarville 12:43:18 -25.0 Dark Up 73.7 232.9 Up 12:28:18 - 12:58:18 10802
Klamath Falls 12:43:28 -26.2 Dark Up 74.2 227.4 Up 12:28:28 - 12:58:28 10790
Fall River/Burney 12:43:23 -25.8 Dark Up 74.7 231.5 Up 12:28:23 - 12:58:23 10703
Gimple 12:43:17 -25.4 Dark Up 75.0 235.4 Up 12:28:17 - 12:58:17 10647
Reno 12:43:05 -24.5 Dark Up 74.6 239.4 Up 12:28:05 - 12:58:05 10644
Greenville 12:43:16 -25.4 Dark Up 75.0 235.2 Up 12:28:16 - 12:58:16 10643
Portola 12:43:11 -25.1 Dark Up 74.9 237.2 Up 12:28:11 - 12:58:11 10636
Yerington 12:43:04 -24.0 Dark Up 74.5 242.4 Up 12:28:04 - 12:58:04 10626
Quincy 12:43:16 -25.4 Dark Up 75.1 235.8 Up 12:28:16 - 12:58:16 10625
Carson City 12:43:09 -24.5 Dark Up 74.8 240.6 Up 12:28:09 - 12:58:09 10613
Hawthorne 12:42:58 -23.5 Dark Up 74.3 244.9 Up 12:27:58 - 12:57:58 10611
Gardnerville 12:43:05 -24.4 Dark Up 74.9 241.5 Up 12:28:05 - 12:58:05 10593
Patrick 12:42:23 -19.4 Dark Up 71.7 261.0 Up 12:27:23 - 12:57:23 10581
Beatty 12:42:44 -21.9 Dark Up 73.6 253.1 Up 12:27:44 - 12:57:44 10561
George/Scottsdale 12:42:02 -17.4 AT Up 70.3 267.4 Up 12:27:02 - 12:57:02 10542
Lee Vining 12:42:58 -23.8 Dark Up 74.9 245.9 Up 12:27:58 - 12:57:58 10537
Laughlin/Bullhead City 12:42:21 -19.9 Dark Up 72.3 261.0 Up 12:27:21 - 12:57:21 10522
Bishop 12:42:51 -23.2 Dark Up 74.6 249.1 Up 12:27:51 - 12:57:51 10519
Lake Havasu City 12:42:21 -19.5 Dark Up 72.2 263.3 Up 12:27:21 - 12:57:21 10477
Yuma 12:42:13 -19.5 Dark Up 72.6 268.8 Up 12:27:13 - 12:57:13 10302
Calipatria 12:42:21 -20.3 Dark Up 73.3 266.8 Up 12:27:21 - 12:57:21 10292
Idyllwild 12:42:25 -21.3 Dark Up 74.2 263.8 Up 12:27:25 - 12:57:25 10283
Wildwood 12:42:39 -22.9 Dark Up 75.7 260.7 Up 12:27:39 - 12:57:39 10217

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 523760, (2024/11/22 12:55UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1  2.86  32
75Sig Gem      07:43:18.8 +28:52:56  5.3  2.35  32
PPM 073179     07:51:30.2 +30:31:49  8.2  0.28  31
PPM 073143     07:49:23.9 +30:43:05  9.2  0.21  32
PPM 073160     07:50:35.9 +30:38:42 10.2  0.06  31
523760         07:50:21.2 +30:39:50 16.9        31
Positions are for J2000

Event circumstances last updated at 2024/03/04 05:28:59 UT

Marc W. Buie, Southwest Research Institute

RECON