RECON: TNO occultation with 523711

Event between (523711) 14JH80 and star GA1000:19173592 with event index number of 2619931

Geocentric closest approach at 2028/07/14 06:33:56 UTC

J2000 position of star is 21:35:35.2 +10:20:17
Equinox of date position of star is 21:36:42.4 +10:26:29
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 48 degrees from the moon. Moon is 56% illuminated.
TNO apparent brightness V=22.3

[RECON map]
TNO is 34.0 AU from the Sun and 33.2 AU from the Earth.
The TNO is moving 21.9 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 109 seconds.
The 1-sigma cross-track error in the shadow position is 4215 km.
The sky-plane scale is 24089.0 km/arcsec.

The TNO has an absolute magnitude Hv=6.9
Diameter=244.4 km assuming a 5% albedo -- 11.4 sec chord
Diameter=99.8 km assuming a 30% albedo -- 4.6 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 523711, (2028/07/14 06:36UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:24.3 +45:23:01  1.3 36.82  63
Markab         23:06:11.1 +15:21:34  2.5 22.27  26
PPM 140523     21:43:56.6 +10:57:21  5.9  1.78  46
PPM 140320     21:35:49.8 +10:33:46  8.4  0.30  48
PPM 140355     21:37:20.9 +10:22:43 10.2  0.13  48
523711         21:36:58.9 +10:28:00 16.6        47
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 31.9 km RECON observability=1.0 and success probability=4.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Nikitin 06:35:18 29.1 Sun up Down -3.2 207.1 Not Up 06:25:41 - 06:44:54 11843
Sleaford 06:36:16 -16.0 AT Up 38.1 129.5 Up 06:26:40 - 06:45:53 9661
Kamloops 06:36:53 -15.0 AT Up 31.3 114.2 Up 06:27:17 - 06:46:30 9551
Kelowna 06:36:53 -16.0 AT Up 32.1 114.6 Up 06:27:17 - 06:46:30 9475
Peachland 06:36:54 -16.0 AT Up 32.0 114.3 Up 06:27:18 - 06:46:31 9466
Summerland 06:36:55 -16.2 AT Up 32.1 114.3 Up 06:27:18 - 06:46:31 9453
Penticton 06:36:54 -16.3 AT Up 32.2 114.3 Up 06:27:18 - 06:46:31 9446
Oliver 06:36:55 -16.6 AT Up 32.4 114.1 Up 06:27:19 - 06:46:32 9414
Anarchist Mountain Observatory 06:36:55 -16.8 AT Up 32.6 114.2 Up 06:27:19 - 06:46:32 9399
Victoria 06:37:05 -16.2 AT Down 30.3 110.3 Up 06:27:29 - 06:46:42 9368
Okanogan 06:36:57 -17.4 AT Up 32.7 113.6 Up 06:27:20 - 06:46:33 9340
Brewster 06:36:58 -17.6 AT Up 32.7 113.3 Up 06:27:22 - 06:46:35 9316
Manson/Chelan 06:37:00 -17.7 AT Up 32.5 112.9 Up 06:27:23 - 06:46:36 9298
Wenatchee 06:37:01 -18.1 Dark Up 32.6 112.4 Up 06:27:24 - 06:46:37 9255
Ellensburg 06:37:03 -18.4 Dark Up 32.6 112.0 Up 06:27:26 - 06:46:39 9217
Yakima 06:37:03 -18.8 Dark Up 32.8 111.7 Up 06:27:27 - 06:46:40 9179
Toppenish/White Swan 06:37:03 -19.0 Dark Up 33.0 111.8 Up 06:27:27 - 06:46:40 9159
PNWRO 06:37:00 -19.7 Dark Up 34.1 112.9 Up 06:27:23 - 06:46:36 9119
The Dalles 06:37:06 -19.5 Dark Down 32.8 110.6 Up 06:27:30 - 06:46:43 9088
Maupin 06:37:08 -19.9 Dark Down 33.0 110.4 Up 06:27:31 - 06:46:44 9048
Sisters 06:37:11 -20.6 Dark Down 33.0 109.5 Up 06:27:34 - 06:46:47 8967
Bend 06:37:11 -20.9 Dark Down 33.2 109.6 Up 06:27:35 - 06:46:48 8943
Oregon Observatory 06:37:11 -21.0 Dark Down 33.2 109.4 Up 06:27:35 - 06:46:48 8927
Chiloquin 06:37:15 -22.1 Dark Down 33.3 108.2 Up 06:27:38 - 06:46:51 8801
Klamath Falls 06:37:15 -22.5 Dark Down 33.5 108.1 Up 06:27:39 - 06:46:52 8768
Cedarville 06:37:12 -23.6 Dark Down 34.8 108.9 Up 06:27:36 - 06:46:49 8694
Fall River/Burney 06:37:16 -23.7 Dark Down 34.1 107.6 Up 06:27:39 - 06:46:52 8651
Greenville 06:37:18 -24.6 Dark Down 34.7 107.4 Up 06:27:42 - 06:46:55 8559
Gimple 06:37:17 -24.7 Dark Down 34.8 107.5 Up 06:27:40 - 06:46:53 8559
Dunrhomin 06:36:34 -27.8 Dark Up 45.5 121.8 Up 06:26:58 - 06:46:11 8552
Quincy 06:37:18 -24.8 Dark Down 34.8 107.3 Up 06:27:41 - 06:46:54 8539
CU-SBO 06:36:35 -28.0 Dark Up 45.6 121.5 Up 06:26:59 - 06:46:12 8527
Portola 06:37:16 -25.1 Dark Down 35.2 107.6 Up 06:27:39 - 06:46:52 8525
Reno 06:37:17 -25.5 Dark Down 35.7 107.9 Up 06:27:41 - 06:46:54 8496
Carson City 06:37:17 -25.9 Dark Down 35.9 107.7 Up 06:27:40 - 06:46:53 8460
Yerington 06:37:15 -26.2 Dark Down 36.4 108.0 Up 06:27:38 - 06:46:51 8438
Gardnerville 06:37:17 -26.1 Dark Down 36.0 107.5 Up 06:27:41 - 06:46:54 8435
Hawthorne 06:37:16 -26.8 Dark Down 36.9 108.1 Up 06:27:39 - 06:46:52 8389
Lee Vining 06:37:17 -27.2 Dark Down 36.7 107.3 Up 06:27:40 - 06:46:53 8334
Bishop 06:37:17 -28.0 Dark Down 37.5 107.5 Up 06:27:41 - 06:46:54 8271
Beatty 06:37:12 -28.8 Dark Up 38.8 108.4 Up 06:27:36 - 06:46:49 8219
Patrick 06:37:07 -31.0 Dark Up 41.5 109.6 Up 06:27:30 - 06:46:43 8060
Laughlin/Bullhead City 06:37:09 -31.1 Dark Up 41.0 108.8 Up 06:27:32 - 06:46:45 8036
Lake Havasu City 06:37:09 -31.8 Dark Up 41.5 108.5 Up 06:27:32 - 06:46:45 7965
Wildwood 06:37:21 -30.9 Dark Down 38.2 104.9 Up 06:27:45 - 06:46:58 7935
Idyllwild 06:37:17 -31.8 Dark Up 39.8 106.0 Up 06:27:41 - 06:46:54 7892
George/Scottsdale 06:37:02 -33.1 Dark Up 43.6 109.8 Up 06:27:25 - 06:46:38 7881
Calipatria 06:37:15 -32.7 Dark Up 40.9 106.4 Up 06:27:38 - 06:46:51 7825
Yuma 06:37:12 -33.4 Dark Up 41.8 106.7 Up 06:27:36 - 06:46:49 7778

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 523711, (2028/07/14 06:36UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 36.82  63
Markab         23:04:45.8 +15:12:18  2.5 22.27  26
PPM 140523     21:42:33.0 +10:49:28  5.9  1.78  46
PPM 140320     21:34:26.2 +10:26:05  8.4  0.30  48
PPM 140355     21:35:57.2 +10:15:00 10.2  0.13  48
523711         21:35:35.2 +10:20:17 16.6        48
Positions are for J2000

Event circumstances last updated at 2022/12/04 03:36:38 UT

Marc W. Buie, Southwest Research Institute

RECON