RECON: TNO occultation with 523713

Event between (523713) 14JX80 and star GA0940:05198874 with event index number of 2377165

Geocentric closest approach at 2023/08/04 08:42:21 UTC

J2000 position of star is 17:37:55.5 +04:22:43
Equinox of date position of star is 17:39:05.4 +04:21:59
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 87 degrees from the moon. Moon is 90% illuminated.
Apparent brightness V=21.9

[RECON map]
Object is 36.5 AU from the Sun and 35.8 AU from the Earth.
Apparent velocity is 16.7 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 88 seconds.
The 1-sigma cross-track error in the shadow position is 1383 km.
The sky-plane scale is 25991.9 km/arcsec.

The object has an absolute magnitude Hv=6.2
Diameter=340.4 km assuming a 5% albedo -- 21.1 sec chord
Diameter=139.0 km assuming a 30% albedo -- 8.6 sec chord
Dynamical classification is 5:2EEE+5:2EII
 
 
 
 
 
 

Star training set for 523713, (2023/08/04 08:44UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.5 -26:28:56  0.9 34.99  99
60Bet Oph      17:44:38.3 +04:33:33  2.8  1.40  86
PPM 164135     17:32:32.4 +02:42:32  6.5  2.33  88
PPM 164330     17:39:21.3 +04:28:45  8.0  0.13  87
523713         17:39:05.6 +04:21:59 16.6        87
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 38.6 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)
Kamloops 08:37:03 -21.8 Dark Up 23.7 246.1 Low 08:29:15 - 08:44:51 4563
Sleaford 08:36:41 -18.1 Dark Up 14.8 257.8 Really Low 08:28:53 - 08:44:29 4542
Kelowna 08:37:00 -22.5 Dark Up 23.5 247.2 Low 08:29:12 - 08:44:48 4467
Peachland 08:37:00 -22.6 Dark Up 23.8 247.0 Low 08:29:12 - 08:44:48 4460
Summerland 08:36:59 -22.8 Dark Up 23.8 247.1 Low 08:29:11 - 08:44:47 4444
Penticton 08:37:00 -22.8 Dark Up 23.7 247.3 Low 08:29:12 - 08:44:48 4435
Oliver 08:36:59 -23.2 Dark Up 23.9 247.4 Low 08:29:11 - 08:44:47 4399
Victoria 08:37:07 -24.1 Dark Up 26.4 244.3 Low 08:29:19 - 08:44:55 4398
Anarchist Mountain Observatory 08:36:59 -23.3 Dark Up 23.8 247.6 Low 08:29:11 - 08:44:47 4379
Okanogan 08:36:58 -24.0 Dark Up 24.2 247.7 Low 08:29:10 - 08:44:46 4317
Brewster 08:36:58 -24.3 Dark Up 24.4 247.7 Low 08:29:10 - 08:44:46 4292
Manson/Chelan 08:36:59 -24.5 Dark Up 24.7 247.4 Low 08:29:11 - 08:44:47 4277
Wenatchee 08:36:59 -25.0 Dark Up 25.0 247.5 Low 08:29:11 - 08:44:47 4232
Ellensburg 08:36:59 -25.4 Dark Up 25.3 247.5 Low 08:29:11 - 08:44:47 4193
Yakima 08:36:57 -25.8 Dark Up 25.5 247.6 Low 08:29:09 - 08:44:45 4152
Toppenish/White Swan 08:36:58 -26.0 Dark Up 25.4 247.9 Low 08:29:10 - 08:44:46 4126
PNWRO 08:36:54 -26.2 Dark Up 24.6 249.3 Low 08:29:06 - 08:44:42 4063
The Dalles 08:36:57 -26.9 Dark Up 26.3 247.5 Low 08:29:09 - 08:44:45 4060
Maupin 08:36:58 -27.3 Dark Up 26.3 247.8 Low 08:29:10 - 08:44:46 4015
Sisters 08:36:59 -28.2 Dark Up 27.0 247.8 Low 08:29:11 - 08:44:47 3933
Bend 08:36:58 -28.4 Dark Up 26.9 248.2 Low 08:29:10 - 08:44:46 3903
Oregon Observatory 08:36:58 -28.6 Dark Up 27.1 248.1 Low 08:29:10 - 08:44:46 3888
Chiloquin 08:36:58 -29.9 Dark Up 27.8 248.4 Low 08:29:10 - 08:44:46 3759
Klamath Falls 08:36:58 -30.3 Dark Up 27.9 248.7 Low 08:29:10 - 08:44:46 3721
Cedarville 08:36:53 -30.8 Dark Up 27.0 250.3 Low 08:29:05 - 08:44:41 3618
Fall River/Burney 08:36:56 -31.4 Dark Up 28.1 249.5 Low 08:29:08 - 08:44:44 3590
Greenville 08:36:55 -32.3 Dark Up 28.1 250.3 Low 08:29:07 - 08:44:43 3486
Gimple 08:36:54 -32.2 Dark Up 28.0 250.4 Low 08:29:06 - 08:44:42 3484
Quincy 08:36:54 -32.5 Dark Up 28.1 250.4 Low 08:29:06 - 08:44:42 3464
Portola 08:36:53 -32.5 Dark Up 27.8 250.9 Low 08:29:05 - 08:44:41 3442
Reno 08:36:51 -32.7 Dark Up 27.4 251.5 Low 08:29:03 - 08:44:39 3401
Carson City 08:36:51 -33.1 Dark Up 27.5 251.7 Low 08:29:03 - 08:44:39 3363
Gardnerville 08:36:51 -33.3 Dark Up 27.6 251.9 Low 08:29:03 - 08:44:39 3336
Yerington 08:36:50 -33.2 Dark Up 27.1 252.3 Low 08:29:02 - 08:44:38 3330
Dunrhomin 08:36:22 -28.8 Dark Up 16.4 261.6 Really Low 08:28:34 - 08:44:10 3279
Hawthorne 08:36:48 -33.6 Dark Up 26.9 252.9 Low 08:29:00 - 08:44:36 3271
Nikitin 08:36:22 -29.0 Dark Up 16.5 261.7 Really Low 08:28:34 - 08:44:10 3259
CU-SBO 08:36:21 -29.1 Dark Up 16.6 261.6 Really Low 08:28:33 - 08:44:09 3253
Lee Vining 08:36:49 -34.2 Dark Up 27.4 252.8 Low 08:29:01 - 08:44:37 3219
Bishop 08:36:47 -34.7 Dark Up 27.0 253.6 Low 08:28:59 - 08:44:35 3142
Beatty 08:36:43 -34.9 Dark Up 25.9 255.0 Low 08:28:55 - 08:44:31 3063
Patrick 08:36:36 -35.7 Dark Up 24.0 257.6 Low 08:28:48 - 08:44:24 2854
Laughlin/Bullhead City 08:36:37 -36.1 Dark Up 24.6 257.3 Low 08:28:49 - 08:44:25 2839
Wildwood 08:36:47 -37.9 Dark Up 28.1 255.1 Low 08:28:59 - 08:44:35 2794
Lake Havasu City 08:36:37 -36.7 Dark Up 24.6 257.7 Low 08:28:49 - 08:44:25 2762
Idyllwild 08:36:43 -37.9 Dark Up 26.7 256.5 Low 08:28:55 - 08:44:31 2720
George/Scottsdale 08:36:31 -36.9 Dark Up 22.8 259.6 Low 08:28:43 - 08:44:19 2640
Calipatria 08:36:40 -38.3 Dark Up 25.9 257.6 Low 08:28:52 - 08:44:28 2633
Yuma 08:36:38 -38.5 Dark Up 25.2 258.3 Low 08:28:50 - 08:44:26 2570

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 523713, (2023/08/04 08:44UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 34.99  99
60Bet Oph      17:43:28.3 +04:34:06  2.8  1.40  86
PPM 164135     17:31:21.4 +02:43:30  6.5  2.33  88
PPM 164330     17:38:11.2 +04:29:29  8.0  0.13  87
523713         17:37:55.5 +04:22:43 16.6        87
Positions are for J2000

Event circumstances last updated at 2023/07/04 04:03:22 UT

Marc W. Buie, Southwest Research Institute

RECON