RECON: TNO occultation with 523753

Event between (523753) 14WV508 and star GA1080:03403092 with event index number of 2614978

Geocentric closest approach at 2023/03/12 09:20:59 UTC

J2000 position of star is 11:51:13.3 +18:23:49
Equinox of date position of star is 11:52:24.7 +18:16:07
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 59 degrees from the moon. Moon is 78% illuminated.
Apparent brightness V=21.5

[RECON map]
Object is 16.1 AU from the Sun and 15.2 AU from the Earth.
Apparent velocity is 20.9 km/sec on the sky relative to the star, or, 6.8 arcsec/hr.
The 1-sigma error in the time of the event is 39 seconds.
The 1-sigma cross-track error in the shadow position is 741 km.
The sky-plane scale is 11007.0 km/arcsec.

The object has an absolute magnitude Hv=9.4
Diameter=79.8 km assuming a 5% albedo -- 3.8 sec chord
Diameter=32.6 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523753, (2023/03/12 09:22UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:36.3 +11:51:11  1.3 25.61  78
Denebola       11:50:14.5 +14:26:33  2.1  3.86  57
PPM 128581     11:50:26.6 +16:06:49  6.3  2.21  58
PPM 128570     11:50:03.0 +18:41:39  8.0  0.70  60
PPM 128598     11:52:00.3 +18:29:47  9.1  0.25  59
523753         11:52:24.9 +18:16:05 16.6        59
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 21.6 km RECON observability=1.0 and success probability=18.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 09:20:32 -34.6 Dark Up 50.6 221.2 Up 09:16:49 - 09:24:16 2898
Kamloops 09:21:11 -40.4 Dark Up 56.4 200.7 Up 09:17:27 - 09:24:54 2408
Kelowna 09:21:06 -41.0 Dark Up 56.9 202.6 Up 09:17:23 - 09:24:50 2362
Peachland 09:21:07 -41.1 Dark Up 57.1 202.2 Up 09:17:23 - 09:24:50 2345
Summerland 09:21:06 -41.3 Dark Up 57.2 202.4 Up 09:17:22 - 09:24:49 2335
Penticton 09:21:05 -41.3 Dark Up 57.2 202.6 Up 09:17:22 - 09:24:49 2332
Oliver 09:21:05 -41.6 Dark Up 57.6 202.8 Up 09:17:21 - 09:24:48 2302
Anarchist Mountain Observatory 09:21:04 -41.7 Dark Up 57.7 203.3 Up 09:17:21 - 09:24:48 2293
Okanogan 09:21:03 -42.4 Dark Up 58.3 203.3 Up 09:17:19 - 09:24:46 2231
Brewster 09:21:04 -42.7 Dark Up 58.6 203.1 Up 09:17:20 - 09:24:47 2202
Manson/Chelan 09:21:04 -43.0 Dark Up 58.9 202.6 Up 09:17:21 - 09:24:48 2175
Victoria 09:21:16 -43.2 Dark Up 59.0 196.5 Up 09:17:32 - 09:24:59 2146
Wenatchee 09:21:04 -43.4 Dark Up 59.4 202.6 Up 09:17:20 - 09:24:47 2129
Ellensburg 09:21:03 -43.9 Dark Up 59.8 202.5 Up 09:17:20 - 09:24:47 2087
Yakima 09:21:03 -44.2 Dark Up 60.2 202.7 Up 09:17:19 - 09:24:46 2051
PNWRO 09:20:56 -44.3 Dark Up 60.3 206.1 Up 09:17:12 - 09:24:39 2044
Toppenish/White Swan 09:21:02 -44.4 Dark Up 60.4 203.2 Up 09:17:18 - 09:24:45 2036
Dunrhomin 09:19:56 -42.9 Dark Up 58.3 234.4 Up 09:16:12 - 09:23:39 1966
Nikitin 09:19:56 -43.1 Dark Up 58.4 234.6 Up 09:16:12 - 09:23:39 1950
The Dalles 09:21:03 -45.3 Dark Up 61.3 202.2 Up 09:17:19 - 09:24:46 1945
CU-SBO 09:19:55 -43.2 Dark Up 58.5 234.6 Up 09:16:12 - 09:23:39 1941
Maupin 09:21:01 -45.7 Dark Up 61.7 202.7 Up 09:17:18 - 09:24:45 1911
Sisters 09:21:01 -46.6 Dark Up 62.6 202.4 Up 09:17:17 - 09:24:44 1818
Bend 09:21:00 -46.8 Dark Up 62.8 203.1 Up 09:17:16 - 09:24:43 1803
Oregon Observatory 09:21:00 -47.0 Dark Up 63.0 202.9 Up 09:17:16 - 09:24:43 1784
Chiloquin 09:20:59 -48.3 Dark Up 64.3 203.1 Up 09:17:15 - 09:24:42 1651
Klamath Falls 09:20:58 -48.6 Dark Up 64.6 203.6 Up 09:17:14 - 09:24:41 1622
Cedarville 09:20:50 -48.7 Dark Up 64.7 207.5 Up 09:17:07 - 09:24:34 1604
Fall River/Burney 09:20:54 -49.5 Dark Up 65.5 205.4 Up 09:17:11 - 09:24:38 1523
Gimple 09:20:50 -50.2 Dark Up 66.2 207.4 Up 09:17:07 - 09:24:34 1454
Greenville 09:20:51 -50.2 Dark Up 66.2 207.2 Up 09:17:07 - 09:24:34 1451
Portola 09:20:48 -50.3 Dark Up 66.3 208.6 Up 09:17:05 - 09:24:32 1435
Quincy 09:20:50 -50.4 Dark Up 66.4 207.5 Up 09:17:06 - 09:24:33 1432
Reno 09:20:45 -50.3 Dark Up 66.3 210.3 Up 09:17:02 - 09:24:29 1430
Yerington 09:20:41 -50.6 Dark Up 66.5 212.3 Up 09:16:58 - 09:24:25 1398
Carson City 09:20:44 -50.6 Dark Up 66.6 210.8 Up 09:17:01 - 09:24:28 1396
Gardnerville 09:20:44 -50.8 Dark Up 66.8 211.2 Up 09:17:00 - 09:24:27 1375
Hawthorne 09:20:39 -50.8 Dark Up 66.7 214.0 Up 09:16:55 - 09:24:22 1370
Lee Vining 09:20:39 -51.4 Dark Up 67.4 213.7 Up 09:16:56 - 09:24:23 1302
Beatty 09:20:28 -51.3 Dark Up 67.1 220.2 Up 09:16:45 - 09:24:12 1276
Bishop 09:20:35 -51.7 Dark Up 67.5 216.1 Up 09:16:52 - 09:24:19 1267
Patrick 09:20:14 -51.1 Dark Up 66.6 228.1 Up 09:16:30 - 09:23:57 1231
Laughlin/Bullhead City 09:20:16 -51.7 Dark Up 67.2 227.2 Up 09:16:32 - 09:23:59 1183
George/Scottsdale 09:20:02 -51.3 Dark Up 66.4 234.6 Up 09:16:18 - 09:23:45 1140
Lake Havasu City 09:20:13 -52.1 Dark Up 67.5 228.9 Up 09:16:30 - 09:23:57 1128
Idyllwild 09:20:21 -53.9 Dark Up 69.4 225.6 Up 09:16:37 - 09:24:04 974
Calipatria 09:20:15 -53.8 Dark Up 69.1 229.2 Up 09:16:31 - 09:23:58 955
Wildwood 09:20:29 -54.5 Dark Up 70.2 220.8 Up 09:16:45 - 09:24:12 946
Yuma 09:20:10 -53.6 Dark Up 68.8 231.7 Up 09:16:27 - 09:23:54 944

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 523753, (2023/03/12 09:22UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 25.61  78
Denebola       11:49:02.8 +14:34:17  2.1  3.86  57
PPM 128581     11:49:14.8 +16:14:33  6.3  2.21  58
PPM 128570     11:48:51.2 +18:49:23  8.0  0.70  60
PPM 128598     11:50:48.6 +18:37:32  9.1  0.25  59
523753         11:51:13.3 +18:23:49 16.6        59
Positions are for J2000

Event circumstances last updated at 2023/02/10 03:58:52 UT

Marc W. Buie, Southwest Research Institute

RECON