RECON: TNO occultation with 523706

Event between (523706) 14HF200 and star GA0580:11463965 with event index number of 2378820

Geocentric closest approach at 2024/05/03 10:31:38 UTC

J2000 position of star is 16:47:16.6 -30:18:32
Equinox of date position of star is 16:48:48.7 -30:21:01
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 85 degrees from the moon. Moon is 28% illuminated.
Apparent brightness V=21.4

[RECON map]
Object is 36.2 AU from the Sun and 35.3 AU from the Earth.
Apparent velocity is 19.5 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 757 seconds.
The 1-sigma cross-track error in the shadow position is 3851 km.
The sky-plane scale is 25627.1 km/arcsec.

The object has an absolute magnitude Hv=5.8
Diameter=398.1 km assuming a 5% albedo -- 21.2 sec chord
Diameter=162.5 km assuming a 30% albedo -- 8.7 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 523706, (2024/05/03 10:32UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.2 -26:29:02  0.9  5.52  89
23Tau Sco      16:37:24.1 -28:15:52  2.8  3.25  88
PPM 295639     16:56:09.4 -30:37:30  6.5  1.60  83
PPM 295444     16:46:52.2 -30:50:59  6.9  0.65  85
PPM 295468     16:48:05.3 -30:18:46  9.9  0.16  85
523706         16:48:49.6 -30:21:02 16.8        84
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 1.2 sigma about the mid-time.
The median site spacing is 18.6 km RECON observability=0.3 and success probability=1.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 10:31:07 -15.5 AT Down 8.8 186.5 Really Low 10:16:07 - 10:46:07 5482
Kelowna 10:31:04 -15.8 AT Down 9.5 187.3 Really Low 10:16:04 - 10:46:04 5462
Peachland 10:31:05 -16.0 AT Down 9.6 187.0 Really Low 10:16:05 - 10:46:05 5462
Summerland 10:31:05 -16.1 AT Down 9.8 187.1 Really Low 10:16:05 - 10:46:05 5458
Penticton 10:31:04 -16.1 AT Down 9.8 187.2 Really Low 10:16:04 - 10:46:04 5456
Victoria 10:31:18 -18.4 Dark Down 11.1 183.9 Really Low 10:16:18 - 10:46:18 5454
Oliver 10:31:03 -16.3 AT Down 10.2 187.2 Really Low 10:16:03 - 10:46:03 5449
Anarchist Mountain Observatory 10:31:03 -16.4 AT Down 10.3 187.4 Really Low 10:16:03 - 10:46:03 5444
Okanogan 10:31:03 -17.0 AT Down 11.0 187.2 Really Low 10:16:03 - 10:46:03 5431
Brewster 10:31:04 -17.3 AT Down 11.3 187.0 Really Low 10:16:04 - 10:46:04 5426
Manson/Chelan 10:31:06 -17.6 AT Down 11.5 186.7 Really Low 10:16:06 - 10:46:06 5424
Wenatchee 10:31:05 -18.0 Dark Down 12.0 186.6 Really Low 10:16:05 - 10:46:05 5413
Ellensburg 10:31:06 -18.5 Dark Down 12.4 186.4 Really Low 10:16:06 - 10:46:06 5405
Yakima 10:31:07 -18.8 Dark Down 12.8 186.4 Really Low 10:16:07 - 10:46:07 5395
Toppenish/White Swan 10:31:05 -18.9 Dark Down 13.0 186.5 Really Low 10:16:05 - 10:46:05 5388
The Dalles 10:31:08 -19.8 Dark Down 13.9 185.9 Really Low 10:16:08 - 10:46:08 5372
PNWRO 10:30:59 -18.5 Dark Down 13.3 187.8 Really Low 10:15:59 - 10:45:59 5369
Sleaford 10:30:20 -8.3 NT Up 5.4 198.7 Really Low 10:15:20 - 10:45:20 5368
Maupin 10:31:08 -20.1 Dark Down 14.3 186.0 Really Low 10:16:08 - 10:46:08 5360
Sisters 10:31:09 -21.0 Dark Down 15.2 185.6 Really Low 10:16:09 - 10:46:09 5338
Bend 10:31:08 -21.1 Dark Down 15.4 185.8 Really Low 10:16:08 - 10:46:08 5329
Oregon Observatory 10:31:08 -21.3 Dark Down 15.6 185.7 Really Low 10:16:08 - 10:46:08 5325
Chiloquin 10:31:10 -22.5 Dark Down 16.9 185.3 Really Low 10:16:10 - 10:46:10 5285
Klamath Falls 10:31:09 -22.7 Dark Down 17.3 185.4 Really Low 10:16:09 - 10:46:09 5273
Cedarville 10:31:02 -22.5 Dark Down 17.8 186.9 Really Low 10:16:02 - 10:46:02 5240
Fall River/Burney 10:31:07 -23.5 Dark Down 18.4 185.8 Really Low 10:16:07 - 10:46:07 5230
Greenville 10:31:05 -24.0 Dark Down 19.3 186.2 Really Low 10:16:05 - 10:46:05 5194
Gimple 10:31:05 -23.9 Dark Down 19.3 186.3 Really Low 10:16:05 - 10:46:05 5194
Quincy 10:31:05 -24.1 Dark Down 19.5 186.2 Really Low 10:16:05 - 10:46:05 5187
Portola 10:31:02 -24.0 Dark Down 19.6 186.7 Really Low 10:16:02 - 10:46:02 5179
Reno 10:31:00 -23.8 Dark Down 19.8 187.3 Really Low 10:16:00 - 10:46:00 5164
Carson City 10:31:00 -24.1 Dark Down 20.1 187.3 Low 10:16:00 - 10:46:00 5150
Gardnerville 10:31:00 -24.3 Dark Down 20.4 187.4 Low 10:16:00 - 10:46:00 5140
Yerington 10:30:57 -23.9 Dark Down 20.2 187.9 Low 10:15:57 - 10:45:57 5138
Hawthorne 10:30:55 -24.0 Dark Down 20.6 188.4 Low 10:15:55 - 10:45:55 5115
Lee Vining 10:30:57 -24.7 Dark Down 21.3 188.0 Low 10:15:57 - 10:45:57 5096
Bishop 10:30:53 -24.7 Dark Up 21.8 188.7 Low 10:15:53 - 10:45:53 5065
Beatty 10:30:45 -24.2 Dark Up 22.0 190.2 Low 10:15:45 - 10:45:45 5030
Dunrhomin 10:30:00 -15.3 AT Up 16.5 200.0 Really Low 10:15:00 - 10:45:00 5013
Nikitin 10:30:00 -15.4 AT Up 16.6 200.0 Really Low 10:15:00 - 10:45:00 5006
CU-SBO 10:30:00 -15.5 AT Up 16.7 199.9 Really Low 10:15:00 - 10:45:00 5005
Patrick 10:30:32 -23.6 Dark Up 23.0 192.9 Low 10:15:32 - 10:45:32 4931
Laughlin/Bullhead City 10:30:35 -24.2 Dark Up 23.4 192.3 Low 10:15:35 - 10:45:35 4927
Wildwood 10:30:52 -27.2 Dark Up 25.0 188.7 Low 10:15:52 - 10:45:52 4917
Lake Havasu City 10:30:33 -24.5 Dark Up 24.0 192.6 Low 10:15:33 - 10:45:33 4892
Idyllwild 10:30:44 -26.4 Dark Up 25.1 190.5 Low 10:15:44 - 10:45:44 4883
Calipatria 10:30:38 -26.1 Dark Up 25.5 191.6 Low 10:15:38 - 10:45:38 4838
George/Scottsdale 10:30:22 -23.5 Dark Up 24.3 194.9 Low 10:15:22 - 10:45:22 4823
Yuma 10:30:33 -25.9 Dark Up 25.8 192.5 Low 10:15:33 - 10:45:33 4806

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, (2024/05/03 10:32UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  5.52  89
23Tau Sco      16:35:52.9 -28:12:58  2.8  3.25  88
PPM 295639     16:54:36.0 -30:35:14  6.5  1.60  83
PPM 295444     16:45:19.0 -30:48:25  6.9  0.65  85
PPM 295468     16:46:32.4 -30:16:14  9.9  0.16  85
523706         16:47:16.6 -30:18:32 16.8        85
Positions are for J2000

Event circumstances last updated at 2024/02/12 04:21:28 UT

Marc W. Buie, Southwest Research Institute

RECON