RECON: TNO occultation with 523706

Event between (523706) 14HF200 and star GA0580:11546527 with event index number of 2378818

Geocentric closest approach at 2024/04/26 10:31:45 UTC

J2000 position of star is 16:47:50.3 -30:18:17
Equinox of date position of star is 16:49:22.4 -30:20:45
Stellar brightness G=12.6, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 10 degrees from the moon. Moon is 94% illuminated.
Apparent brightness V=21.5

[RECON map]
Object is 36.2 AU from the Sun and 35.4 AU from the Earth.
Apparent velocity is 17.5 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 844 seconds.
The 1-sigma cross-track error in the shadow position is 3950 km.
The sky-plane scale is 25678.5 km/arcsec.

The object has an absolute magnitude Hv=5.8
Diameter=398.1 km assuming a 5% albedo -- 23.6 sec chord
Diameter=162.5 km assuming a 30% albedo -- 9.6 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 523706, (2024/04/26 10:32UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.2 -26:29:02  0.9  5.61   5
23Tau Sco      16:37:24.0 -28:15:52  2.8  3.34   7
PPM 295639     16:56:09.3 -30:37:30  6.5  1.48  12
PPM 295476     16:48:31.7 -31:02:23  8.5  0.72  11
PPM 295468     16:48:05.2 -30:18:46  9.9  0.28  10
523706         16:49:23.2 -30:20:46 12.6        11
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 1.1 sigma about the mid-time.
The median site spacing is 17.4 km RECON observability=0.3 and success probability=2.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 10:31:23 -17.5 AT Up 9.0 180.4 Really Low 10:16:23 - 10:46:23 2531
Kelowna 10:31:20 -17.8 AT Up 9.8 181.2 Really Low 10:16:20 - 10:46:20 2513
Peachland 10:31:21 -18.0 AT Up 9.9 180.9 Really Low 10:16:21 - 10:46:21 2512
Summerland 10:31:21 -18.1 Dark Up 10.1 181.0 Really Low 10:16:21 - 10:46:21 2509
Penticton 10:31:20 -18.1 Dark Up 10.2 181.1 Really Low 10:16:20 - 10:46:20 2507
Oliver 10:31:20 -18.3 Dark Up 10.5 181.1 Really Low 10:16:20 - 10:46:20 2500
Victoria 10:31:36 -20.4 Dark Up 11.1 177.8 Really Low 10:16:36 - 10:46:36 2499
Anarchist Mountain Observatory 10:31:19 -18.4 Dark Up 10.7 181.3 Really Low 10:16:19 - 10:46:19 2496
Okanogan 10:31:20 -19.0 Dark Up 11.3 181.1 Really Low 10:16:20 - 10:46:20 2483
Brewster 10:31:21 -19.3 Dark Up 11.6 180.9 Really Low 10:16:21 - 10:46:21 2478
Manson/Chelan 10:31:22 -19.6 Dark Up 11.8 180.6 Really Low 10:16:22 - 10:46:22 2475
Wenatchee 10:31:24 -20.0 Dark Up 12.3 180.4 Really Low 10:16:24 - 10:46:24 2464
Ellensburg 10:31:24 -20.4 Dark Up 12.7 180.2 Really Low 10:16:24 - 10:46:24 2456
Yakima 10:31:25 -20.8 Dark Up 13.1 180.2 Really Low 10:16:25 - 10:46:25 2445
Toppenish/White Swan 10:31:24 -20.9 Dark Up 13.3 180.4 Really Low 10:16:24 - 10:46:24 2439
Sleaford 10:30:29 -10.2 NT Up 6.6 192.7 Really Low 10:15:29 - 10:45:29 2437
PNWRO 10:31:17 -20.5 Dark Up 13.7 181.7 Really Low 10:16:17 - 10:46:17 2422
The Dalles 10:31:28 -21.8 Dark Up 14.1 179.7 Really Low 10:16:28 - 10:46:28 2422
Maupin 10:31:27 -22.1 Dark Up 14.5 179.8 Really Low 10:16:27 - 10:46:27 2410
Sisters 10:31:29 -23.0 Dark Up 15.4 179.3 Really Low 10:16:29 - 10:46:29 2388
Bend 10:31:28 -23.0 Dark Up 15.6 179.6 Really Low 10:16:28 - 10:46:28 2380
Oregon Observatory 10:31:29 -23.2 Dark Up 15.8 179.4 Really Low 10:16:29 - 10:46:29 2375
Chiloquin 10:31:31 -24.4 Dark Up 17.1 179.1 Really Low 10:16:31 - 10:46:31 2336
Klamath Falls 10:31:31 -24.7 Dark Up 17.5 179.1 Really Low 10:16:31 - 10:46:31 2324
Cedarville 10:31:23 -24.4 Dark Up 18.2 180.6 Really Low 10:16:23 - 10:46:23 2294
Fall River/Burney 10:31:29 -25.4 Dark Up 18.6 179.5 Really Low 10:16:29 - 10:46:29 2282
Greenville 10:31:27 -25.9 Dark Up 19.6 179.9 Really Low 10:16:27 - 10:46:27 2247
Gimple 10:31:27 -25.8 Dark Up 19.6 180.0 Really Low 10:16:27 - 10:46:27 2247
Quincy 10:31:28 -26.0 Dark Up 19.8 179.9 Really Low 10:16:28 - 10:46:28 2240
Portola 10:31:25 -25.9 Dark Up 19.9 180.3 Really Low 10:16:25 - 10:46:25 2233
Reno 10:31:22 -25.7 Dark Up 20.1 180.9 Low 10:16:22 - 10:46:22 2220
Carson City 10:31:21 -26.0 Dark Up 20.5 180.9 Low 10:16:21 - 10:46:21 2206
Gardnerville 10:31:22 -26.1 Dark Up 20.7 181.0 Low 10:16:22 - 10:46:22 2196
Yerington 10:31:19 -25.8 Dark Up 20.7 181.5 Low 10:16:19 - 10:46:19 2195
Hawthorne 10:31:17 -25.9 Dark Up 21.1 182.0 Low 10:16:17 - 10:46:17 2173
Lee Vining 10:31:18 -26.5 Dark Up 21.7 181.5 Low 10:16:18 - 10:46:18 2154
Bishop 10:31:15 -26.6 Dark Up 22.3 182.2 Low 10:16:15 - 10:46:15 2124
Dunrhomin 10:30:13 -17.0 AT Up 18.0 193.9 Really Low 10:15:13 - 10:45:13 2093
Beatty 10:31:07 -26.0 Dark Up 22.7 183.7 Low 10:16:07 - 10:46:07 2092
Nikitin 10:30:13 -17.2 AT Up 18.2 193.9 Really Low 10:15:13 - 10:45:13 2087
CU-SBO 10:30:14 -17.2 AT Up 18.3 193.8 Really Low 10:15:14 - 10:45:14 2085
Patrick 10:30:52 -25.3 Dark Up 24.0 186.4 Low 10:15:52 - 10:45:52 2000
Laughlin/Bullhead City 10:30:56 -25.9 Dark Up 24.3 185.8 Low 10:15:56 - 10:45:56 1995
Wildwood 10:31:16 -29.0 Dark Up 25.6 182.1 Low 10:16:16 - 10:46:16 1977
Lake Havasu City 10:30:54 -26.2 Dark Up 24.9 186.1 Low 10:15:54 - 10:45:54 1960
Idyllwild 10:31:06 -28.1 Dark Up 25.8 183.9 Low 10:16:06 - 10:46:06 1947
Calipatria 10:31:00 -27.8 Dark Up 26.4 185.0 Low 10:16:00 - 10:46:00 1905
George/Scottsdale 10:30:41 -25.2 Dark Up 25.4 188.4 Low 10:15:41 - 10:45:41 1896
Yuma 10:30:55 -27.6 Dark Up 26.7 185.9 Low 10:15:55 - 10:45:55 1875

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 523706, (2024/04/26 10:32UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  5.61   5
23Tau Sco      16:35:52.9 -28:12:58  2.8  3.34   7
PPM 295639     16:54:36.0 -30:35:14  6.5  1.48  12
PPM 295476     16:46:58.4 -30:59:52  8.5  0.72  11
PPM 295468     16:46:32.4 -30:16:14  9.9  0.28  10
523706         16:47:50.3 -30:18:17 12.6        10
Positions are for J2000

Event circumstances last updated at 2024/02/12 04:20:55 UT

Marc W. Buie, Southwest Research Institute

RECON