RECON: TNO occultation with 523758

Event between (523758) 14WJ509 and star GA1180:03479838 with event index number of 2748749

Geocentric closest approach at 2029/04/04 09:19:37 UTC

J2000 position of star is 10:02:04.6 +28:03:47
Equinox of date position of star is 10:03:27.5 +27:56:44
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 124 degrees from the moon. Moon is 65% illuminated.
Apparent brightness V=21.6

[RECON map]
Object is 38.5 AU from the Sun and 37.9 AU from the Earth.
Apparent velocity is 14.7 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 147 seconds.
The 1-sigma cross-track error in the shadow position is 1446 km.
The sky-plane scale is 27513.5 km/arcsec.

The object has an absolute magnitude Hv=5.6
Diameter=438.5 km assuming a 5% albedo -- 31.0 sec chord
Diameter=179.0 km assuming a 30% albedo -- 12.7 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 523758, (2029/04/04 09:20UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:55.7 +11:49:23  1.3 16.16 117
PPM 100009     10:01:17.1 +29:30:14  5.7  1.67 124
PPM 100021     10:02:20.1 +28:01:52  8.5  0.33 124
523758         10:03:44.7 +27:55:16 16.5       123
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=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)
Sleaford 09:15:23 -25.9 Dark Up 30.5 277.6 Up 09:02:40 - 09:28:07 12067
Kamloops 09:15:41 -31.4 Dark Up 39.4 267.6 Up 09:02:57 - 09:28:24 11514
Kelowna 09:15:34 -32.0 Dark Up 38.9 268.9 Up 09:02:51 - 09:28:18 11477
Peachland 09:15:34 -32.1 Dark Up 39.1 268.8 Up 09:02:51 - 09:28:18 11459
Summerland 09:15:34 -32.3 Dark Up 39.0 269.0 Up 09:02:50 - 09:28:17 11450
Penticton 09:15:33 -32.3 Dark Up 39.0 269.1 Up 09:02:50 - 09:28:17 11448
Oliver 09:15:30 -32.6 Dark Up 39.0 269.4 Up 09:02:47 - 09:28:14 11420
Anarchist Mountain Observatory 09:15:30 -32.7 Dark Up 38.8 269.7 Up 09:02:46 - 09:28:13 11412
Okanogan 09:15:27 -33.4 Dark Up 39.0 270.0 Up 09:02:43 - 09:28:10 11353
Brewster 09:15:24 -33.7 Dark Up 39.1 270.1 Up 09:02:41 - 09:28:08 11324
Manson/Chelan 09:15:25 -34.0 Dark Up 39.4 270.0 Up 09:02:42 - 09:28:09 11296
Wenatchee 09:15:23 -34.5 Dark Up 39.5 270.2 Up 09:02:40 - 09:28:07 11251
Victoria 09:15:37 -34.1 Dark Up 41.5 267.0 Up 09:02:53 - 09:28:20 11246
Dunrhomin 09:14:17 -35.0 Dark Up 27.9 284.4 Low 09:01:34 - 09:27:01 11212
Ellensburg 09:15:21 -34.9 Dark Up 39.7 270.4 Up 09:02:38 - 09:28:05 11210
Nikitin 09:14:16 -35.1 Dark Up 27.9 284.5 Low 09:01:33 - 09:27:00 11196
CU-SBO 09:14:16 -35.2 Dark Up 27.9 284.5 Low 09:01:33 - 09:27:00 11188
PNWRO 09:15:13 -35.4 Dark Up 38.5 272.4 Up 09:02:29 - 09:27:56 11182
Yakima 09:15:20 -35.3 Dark Up 39.7 270.7 Up 09:02:36 - 09:28:03 11175
Toppenish/White Swan 09:15:17 -35.4 Dark Up 39.6 271.0 Up 09:02:34 - 09:28:01 11163
The Dalles 09:15:17 -36.4 Dark Up 40.1 271.1 Up 09:02:34 - 09:28:01 11071
Maupin 09:15:14 -36.7 Dark Up 40.0 271.5 Up 09:02:31 - 09:27:58 11039
Sisters 09:15:11 -37.7 Dark Up 40.3 271.9 Up 09:02:28 - 09:27:55 10947
Bend 09:15:10 -37.8 Dark Up 40.2 272.3 Up 09:02:26 - 09:27:53 10936
Oregon Observatory 09:15:08 -38.0 Dark Up 40.2 272.3 Up 09:02:24 - 09:27:51 10916
Chiloquin 09:15:04 -39.4 Dark Up 40.5 273.2 Up 09:02:20 - 09:27:47 10787
Klamath Falls 09:15:01 -39.7 Dark Up 40.4 273.5 Up 09:02:18 - 09:27:45 10760
Cedarville 09:14:53 -39.9 Dark Up 39.2 275.1 Up 09:02:10 - 09:27:37 10755
Fall River/Burney 09:14:55 -40.7 Dark Up 40.1 274.7 Up 09:02:12 - 09:27:39 10669
Gimple 09:14:49 -41.4 Dark Up 39.6 275.8 Up 09:02:06 - 09:27:33 10607
Greenville 09:14:50 -41.4 Dark Up 39.7 275.7 Up 09:02:07 - 09:27:34 10604
Portola 09:14:48 -41.6 Dark Up 39.3 276.3 Up 09:02:04 - 09:27:31 10592
Reno 09:14:44 -41.6 Dark Up 38.8 276.9 Up 09:02:00 - 09:27:27 10592
Quincy 09:14:49 -41.6 Dark Up 39.7 275.9 Up 09:02:06 - 09:27:33 10586
Yerington 09:14:40 -41.9 Dark Up 38.2 277.7 Up 09:01:56 - 09:27:23 10566
Carson City 09:14:42 -41.9 Dark Up 38.7 277.2 Up 09:01:59 - 09:27:26 10560
Hawthorne 09:14:36 -42.1 Dark Up 37.7 278.3 Up 09:01:53 - 09:27:20 10545
Gardnerville 09:14:41 -42.1 Dark Up 38.6 277.4 Up 09:01:58 - 09:27:25 10540
Lee Vining 09:14:35 -42.8 Dark Up 38.0 278.5 Up 09:01:51 - 09:27:18 10476
Beatty 09:14:24 -42.9 Dark Up 36.0 280.4 Up 09:01:41 - 09:27:08 10470
Patrick 09:14:10 -43.0 Dark Up 33.5 282.8 Up 09:01:27 - 09:26:54 10451
Bishop 09:14:31 -43.1 Dark Up 37.4 279.3 Up 09:01:47 - 09:27:14 10449
Laughlin/Bullhead City 09:14:12 -43.5 Dark Up 34.0 282.6 Up 09:01:28 - 09:26:55 10400
George/Scottsdale 09:13:59 -43.4 Dark Up 31.5 284.7 Up 09:01:15 - 09:26:42 10381
Lake Havasu City 09:14:08 -44.0 Dark Up 33.7 283.2 Up 09:01:25 - 09:26:52 10350
Idyllwild 09:14:11 -45.6 Dark Up 35.4 282.7 Up 09:01:28 - 09:26:55 10184
Calipatria 09:14:06 -45.7 Dark Up 34.3 283.6 Up 09:01:23 - 09:26:50 10175
Yuma 09:14:02 -45.6 Dark Up 33.5 284.2 Up 09:01:18 - 09:26:45 10173
Wildwood 09:14:17 -46.1 Dark Up 37.0 281.6 Up 09:01:34 - 09:27:01 10141

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 523758, (2029/04/04 09:20UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 16.16 117
PPM 100009     09:59:36.0 +29:38:42  5.7  1.67 124
PPM 100021     10:00:39.8 +28:10:22  8.5  0.33 124
523758         10:02:04.6 +28:03:47 16.5       124
Positions are for J2000

Event circumstances last updated at 2024/03/19 04:10:49 UT

Marc W. Buie, Southwest Research Institute

RECON