RECON: TNO occultation with 523706

Event between (523706) 14HF200 and star GA0580:17396085 with event index number of 2380343

Geocentric closest approach at 2027/07/05 07:49:39 UTC

J2000 position of star is 17:08:51.2 -31:26:55
Equinox of date position of star is 17:10:26.0 -31:28:42
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 138 degrees from the moon. Moon is 2% illuminated.
Apparent brightness V=21.4

[RECON map]
Object is 35.8 AU from the Sun and 34.9 AU from the Earth.
Apparent velocity is 21.0 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 1153 seconds.
The 1-sigma cross-track error in the shadow position is 5134 km.
The sky-plane scale is 25313.8 km/arcsec.

The object has an absolute magnitude Hv=5.8
Diameter=398.1 km assuming a 5% albedo -- 19.7 sec chord
Diameter=162.5 km assuming a 30% albedo -- 8.0 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 523706, (2027/07/05 07:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:05.9 -26:29:26  0.9  9.98 130
26Eps Sco      16:51:57.3 -34:20:25  2.3  4.85 134
PPM 295967     17:10:33.2 -30:26:15  5.8  1.04 138
PPM 295941     17:09:30.4 -31:06:43  7.1  0.44 138
PPM 295966     17:10:33.6 -31:19:17  9.6  0.16 138
523706         17:10:37.8 -31:28:55 16.5       139
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 0.8 sigma about the mid-time.
The median site spacing is 30.3 km RECON observability=0.1 and success probability=0.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 07:49:09 -16.4 AT Down 5.4 199.4 Really Low 07:34:09 - 08:04:09 9703
Kelowna 07:49:05 -17.3 AT Down 6.0 200.2 Really Low 07:34:05 - 08:04:05 9686
Peachland 07:49:07 -17.4 AT Down 6.2 199.9 Really Low 07:34:07 - 08:04:07 9686
Summerland 07:49:06 -17.5 AT Down 6.3 200.0 Really Low 07:34:06 - 08:04:06 9684
Penticton 07:49:06 -17.6 AT Down 6.3 200.1 Really Low 07:34:06 - 08:04:06 9682
Victoria 07:49:15 -18.4 Dark Down 8.1 196.9 Really Low 07:34:15 - 08:04:15 9680
Oliver 07:49:04 -18.0 AT Down 6.7 200.1 Really Low 07:34:04 - 08:04:04 9676
Anarchist Mountain Observatory 07:49:03 -18.1 Dark Down 6.8 200.3 Really Low 07:34:03 - 08:04:03 9673
Okanogan 07:49:04 -18.8 Dark Down 7.4 200.1 Really Low 07:34:04 - 08:04:04 9662
Brewster 07:49:03 -19.0 Dark Down 7.7 200.0 Really Low 07:34:03 - 08:04:03 9658
Manson/Chelan 07:49:04 -19.2 Dark Down 8.0 199.7 Really Low 07:34:04 - 08:04:04 9656
Wenatchee 07:49:04 -19.7 Dark Down 8.5 199.5 Really Low 07:34:04 - 08:04:04 9647
Ellensburg 07:49:05 -20.1 Dark Down 9.0 199.4 Really Low 07:34:05 - 08:04:05 9640
Yakima 07:49:03 -20.5 Dark Down 9.3 199.4 Really Low 07:34:03 - 08:04:03 9632
Toppenish/White Swan 07:49:03 -20.7 Dark Down 9.5 199.5 Really Low 07:34:03 - 08:04:03 9626
The Dalles 07:49:04 -21.5 Dark Down 10.4 198.9 Really Low 07:34:04 - 08:04:04 9612
PNWRO 07:48:57 -21.2 Dark Down 9.5 200.8 Really Low 07:33:57 - 08:03:57 9610
Maupin 07:49:02 -21.9 Dark Down 10.8 199.0 Really Low 07:34:02 - 08:04:02 9602
Sleaford 07:48:31 -14.6 AT Down 0.4 211.0 Really Low 07:33:31 - 08:03:31 9593
Sisters 07:49:03 -22.7 Dark Down 11.7 198.7 Really Low 07:34:03 - 08:04:03 9583
Bend 07:49:02 -23.0 Dark Down 11.9 198.9 Really Low 07:34:02 - 08:04:02 9576
Oregon Observatory 07:49:02 -23.1 Dark Down 12.1 198.8 Really Low 07:34:02 - 08:04:02 9572
Chiloquin 07:49:02 -24.4 Dark Down 13.4 198.6 Really Low 07:34:02 - 08:04:02 9537
Klamath Falls 07:49:01 -24.8 Dark Down 13.8 198.6 Really Low 07:34:01 - 08:04:01 9527
Cedarville 07:48:54 -25.6 Dark Down 14.0 200.0 Really Low 07:33:54 - 08:03:54 9498
Fall River/Burney 07:48:57 -26.0 Dark Down 14.8 199.1 Really Low 07:33:57 - 08:03:57 9489
Greenville 07:48:55 -26.9 Dark Down 15.5 199.5 Really Low 07:33:55 - 08:03:55 9457
Gimple 07:48:54 -26.9 Dark Down 15.5 199.6 Really Low 07:33:54 - 08:03:54 9457
Quincy 07:48:55 -27.1 Dark Down 15.7 199.5 Really Low 07:33:55 - 08:03:55 9450
Portola 07:48:53 -27.3 Dark Down 15.7 199.9 Really Low 07:33:53 - 08:03:53 9444
Reno 07:48:50 -27.6 Dark Down 15.8 200.5 Really Low 07:33:50 - 08:03:50 9431
Carson City 07:48:49 -27.9 Dark Down 16.1 200.6 Really Low 07:33:49 - 08:03:49 9418
Gardnerville 07:48:50 -28.2 Dark Down 16.3 200.6 Really Low 07:33:50 - 08:03:50 9410
Yerington 07:48:47 -28.1 Dark Down 16.1 201.1 Really Low 07:33:47 - 08:03:47 9408
Hawthorne 07:48:45 -28.6 Dark Down 16.4 201.6 Really Low 07:33:45 - 08:03:45 9387
Lee Vining 07:48:44 -29.2 Dark Down 17.1 201.2 Really Low 07:33:44 - 08:03:44 9370
Bishop 07:48:41 -29.8 Dark Down 17.4 201.9 Really Low 07:33:41 - 08:03:41 9342
Beatty 07:48:34 -30.3 Dark Down 17.4 203.3 Really Low 07:33:34 - 08:03:34 9311
Dunrhomin 07:48:00 -26.2 Dark Down 10.3 212.0 Really Low 07:33:00 - 08:03:00 9290
Nikitin 07:48:00 -26.4 Dark Down 10.4 212.0 Really Low 07:33:00 - 08:03:00 9284
CU-SBO 07:47:59 -26.4 Dark Down 10.5 212.0 Really Low 07:32:59 - 08:02:59 9283
Patrick 07:48:20 -31.8 Dark Down 17.8 205.8 Really Low 07:33:20 - 08:03:20 9221
Laughlin/Bullhead City 07:48:23 -32.0 Dark Down 18.2 205.3 Really Low 07:33:23 - 08:03:23 9218
Wildwood 07:48:38 -33.1 Dark Down 20.5 202.1 Low 07:33:38 - 08:03:38 9207
Lake Havasu City 07:48:20 -32.7 Dark Down 18.8 205.6 Really Low 07:33:20 - 08:03:20 9186
Idyllwild 07:48:29 -33.5 Dark Down 20.3 203.7 Low 07:33:29 - 08:03:29 9176
Calipatria 07:48:23 -34.1 Dark Down 20.4 204.8 Low 07:33:23 - 08:03:23 9136
George/Scottsdale 07:48:10 -33.4 Dark Down 18.6 207.7 Really Low 07:33:10 - 08:03:10 9122
Yuma 07:48:20 -34.5 Dark Down 20.5 205.6 Low 07:33:20 - 08:03:20 9106

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, (2027/07/05 07:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  9.98 130
26Eps Sco      16:50:08.7 -34:17:41  2.3  4.85 134
PPM 295967     17:08:47.5 -30:24:15  5.8  1.04 138
PPM 295941     17:07:44.2 -31:04:41  7.1  0.44 138
PPM 295966     17:08:47.2 -31:17:17  9.6  0.16 138
523706         17:08:51.2 -31:26:55 16.5       138
Positions are for J2000

Event circumstances last updated at 2024/06/21 21:29:39 UT

Marc W. Buie, Southwest Research Institute

RECON