RECON: TNO occultation with 523699

Event between (523699) 14GH54 and star GA0600:07352786 with event index number of 2620925

Geocentric closest approach at 2024/05/20 08:47:40 UTC

J2000 position of star is 15:13:07.0 -29:33:43
Equinox of date position of star is 15:14:32.6 -29:38:55
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 32 degrees from the moon. Moon is 90% illuminated.
Apparent brightness V=21.9

[RECON map]
Object is 37.2 AU from the Sun and 36.2 AU from the Earth.
Apparent velocity is 24.2 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 82 seconds.
The 1-sigma cross-track error in the shadow position is 1877 km.
The sky-plane scale is 26250.6 km/arcsec.

The object has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 14.3 sec chord
Diameter=141.6 km assuming a 30% albedo -- 5.8 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 523699, (2024/05/20 08:48UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.4 -26:29:02  0.9 17.11  47
7Del Sco       16:01:46.8 -22:41:21  2.3 12.66  40
2 Lup          15:19:19.3 -30:14:12  3.7  1.18  34
PPM 263858     15:10:11.3 -29:27:26  8.2  0.98  31
PPM 263941     15:14:07.0 -29:44:41  9.7  0.14  32
523699         15:14:35.8 -29:39:07 14.9        33
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 24.5 km RECON observability=0.1 and success probability=1.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 08:47:28 -18.4 Dark Up 7.5 199.0 Really Low 08:40:07 - 08:54:49 2769
Kelowna 08:47:24 -19.0 Dark Up 8.1 199.7 Really Low 08:40:03 - 08:54:45 2756
Peachland 08:47:24 -19.2 Dark Up 8.2 199.5 Really Low 08:40:03 - 08:54:45 2754
Summerland 08:47:24 -19.3 Dark Up 8.4 199.6 Really Low 08:40:03 - 08:54:45 2751
Penticton 08:47:24 -19.4 Dark Up 8.4 199.7 Really Low 08:40:03 - 08:54:45 2750
Oliver 08:47:24 -19.7 Dark Up 8.7 199.7 Really Low 08:40:03 - 08:54:45 2744
Anarchist Mountain Observatory 08:47:22 -19.9 Dark Up 8.9 199.9 Really Low 08:40:01 - 08:54:43 2741
Okanogan 08:47:22 -20.5 Dark Up 9.5 199.7 Really Low 08:40:01 - 08:54:43 2728
Victoria 08:47:33 -20.9 Dark Up 10.1 196.5 Really Low 08:40:12 - 08:54:54 2728
Sleaford 08:46:53 -14.1 AT Up 2.5 210.8 Really Low 08:39:32 - 08:54:14 2726
Brewster 08:47:23 -20.8 Dark Up 9.8 199.6 Really Low 08:40:02 - 08:54:44 2723
Manson/Chelan 08:47:23 -21.1 Dark Up 10.1 199.3 Really Low 08:40:02 - 08:54:44 2719
Wenatchee 08:47:23 -21.6 Dark Up 10.6 199.1 Really Low 08:40:02 - 08:54:44 2709
Ellensburg 08:47:23 -22.0 Dark Up 11.0 199.0 Really Low 08:40:02 - 08:54:44 2700
Yakima 08:47:23 -22.4 Dark Up 11.4 199.0 Really Low 08:40:02 - 08:54:44 2691
Toppenish/White Swan 08:47:22 -22.6 Dark Up 11.6 199.1 Really Low 08:40:01 - 08:54:43 2686
PNWRO 08:47:17 -22.7 Dark Up 11.6 200.4 Really Low 08:39:56 - 08:54:38 2676
The Dalles 08:47:23 -23.5 Dark Up 12.5 198.5 Really Low 08:40:02 - 08:54:44 2666
Maupin 08:47:22 -23.9 Dark Up 12.9 198.6 Really Low 08:40:01 - 08:54:43 2656
Sisters 08:47:22 -24.8 Dark Up 13.8 198.3 Really Low 08:40:01 - 08:54:43 2633
Bend 08:47:21 -25.0 Dark Up 14.0 198.5 Really Low 08:40:00 - 08:54:42 2627
Oregon Observatory 08:47:21 -25.2 Dark Up 14.2 198.4 Really Low 08:40:00 - 08:54:42 2622
Chiloquin 08:47:21 -26.5 Dark Up 15.5 198.2 Really Low 08:40:00 - 08:54:42 2583
Klamath Falls 08:47:20 -26.9 Dark Up 15.8 198.3 Really Low 08:39:59 - 08:54:41 2572
Cedarville 08:47:14 -27.3 Dark Up 16.1 199.7 Really Low 08:39:53 - 08:54:35 2551
Fall River/Burney 08:47:18 -27.9 Dark Up 16.9 198.7 Really Low 08:39:57 - 08:54:39 2534
Greenville 08:47:15 -28.8 Dark Up 17.6 199.2 Really Low 08:39:54 - 08:54:36 2504
Gimple 08:47:14 -28.8 Dark Up 17.6 199.2 Really Low 08:39:53 - 08:54:35 2504
Quincy 08:47:14 -29.0 Dark Up 17.8 199.2 Really Low 08:39:53 - 08:54:35 2496
Portola 08:47:13 -29.0 Dark Up 17.8 199.6 Really Low 08:39:52 - 08:54:34 2493
Reno 08:47:10 -29.1 Dark Up 17.9 200.2 Really Low 08:39:49 - 08:54:31 2483
Carson City 08:47:10 -29.5 Dark Up 18.2 200.3 Really Low 08:39:49 - 08:54:31 2470
Yerington 08:47:07 -29.6 Dark Up 18.2 200.8 Really Low 08:39:46 - 08:54:28 2462
Gardnerville 08:47:10 -29.7 Dark Up 18.4 200.3 Really Low 08:39:49 - 08:54:31 2461
Hawthorne 08:47:05 -29.9 Dark Up 18.5 201.3 Really Low 08:39:44 - 08:54:26 2444
Lee Vining 08:47:06 -30.6 Dark Up 19.2 201.0 Really Low 08:39:45 - 08:54:27 2424
Dunrhomin 08:46:26 -24.5 Dark Up 12.3 212.1 Really Low 08:39:05 - 08:53:47 2423
Nikitin 08:46:25 -24.7 Dark Up 12.5 212.1 Really Low 08:39:04 - 08:53:46 2417
CU-SBO 08:46:25 -24.7 Dark Up 12.6 212.1 Really Low 08:39:04 - 08:53:46 2416
Bishop 08:47:03 -31.0 Dark Up 19.5 201.7 Really Low 08:39:42 - 08:54:24 2398
Beatty 08:46:57 -31.1 Dark Up 19.5 203.1 Really Low 08:39:36 - 08:54:18 2376
Patrick 08:46:44 -31.7 Dark Up 19.9 205.8 Really Low 08:39:23 - 08:54:05 2302
Laughlin/Bullhead City 08:46:46 -32.1 Dark Up 20.3 205.2 Low 08:39:25 - 08:54:07 2294
Lake Havasu City 08:46:44 -32.7 Dark Up 20.9 205.5 Low 08:39:23 - 08:54:05 2263
Wildwood 08:46:59 -34.2 Dark Up 22.6 201.9 Low 08:39:38 - 08:54:20 2257
Idyllwild 08:46:52 -34.1 Dark Up 22.4 203.6 Low 08:39:31 - 08:54:13 2238
George/Scottsdale 08:46:35 -32.7 Dark Up 20.6 207.7 Low 08:39:14 - 08:53:56 2213
Calipatria 08:46:47 -34.3 Dark Up 22.5 204.7 Low 08:39:26 - 08:54:08 2204
Yuma 08:46:43 -34.5 Dark Up 22.6 205.6 Low 08:39:22 - 08:54:04 2179

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 523699, (2024/05/20 08:48UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 17.11  47
7Del Sco       16:00:20.0 -22:37:19  2.3 12.66  40
2 Lup          15:17:49.8 -30:08:55  3.7  1.18  34
PPM 263858     15:08:42.8 -29:21:55  8.2  0.98  31
PPM 263941     15:12:38.1 -29:39:16  9.7  0.14  32
523699         15:13:07.0 -29:33:43 14.9        32
Positions are for J2000

Event circumstances last updated at 2023/07/04 04:10:39 UT

Marc W. Buie, Southwest Research Institute

RECON