RECON: TNO occultation with 523703

Event between (523703) 14HX199 and star GA0740:08950313 with event index number of 2743177

Geocentric closest approach at 2029/04/23 09:24:34 UTC

J2000 position of star is 17:30:08.7 -15:56:19
Equinox of date position of star is 17:31:29.6 -15:57:18
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 120 degrees from the moon. Moon is 67% illuminated.
Apparent brightness V=22.2

[RECON map]
Object is 30.9 AU from the Sun and 30.2 AU from the Earth.
Apparent velocity is 13.2 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 330 seconds.
The 1-sigma cross-track error in the shadow position is 1754 km.
The sky-plane scale is 21932.3 km/arcsec.

The object has an absolute magnitude Hv=7.2
Diameter=221.8 km assuming a 5% albedo -- 17.0 sec chord
Diameter=90.6 km assuming a 30% albedo -- 6.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 523703, (2029/04/23 09:17UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:12.6 -26:29:40  0.9 17.60 106
35Eta Oph      17:12:03.7 -15:45:33  2.6  4.76 115
PPM 233351     17:39:17.2 -15:35:11  6.2  1.83 121
PPM 233141     17:31:10.9 -16:03:20  7.5  0.18 120
PPM 233151     17:31:39.1 -15:56:02  8.6  0.05 120
523703         17:31:49.9 -15:57:33 16.0       120
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 2.7 sigma about the mid-time.
The median site spacing is 19.3 km RECON observability=0.9 and success probability=0.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 09:27:05 -18.1 Dark Up 20.7 164.6 Low 09:12:05 - 09:42:05 6360
Kamloops 09:28:14 -23.8 Dark Up 18.7 150.4 Really Low 09:13:14 - 09:43:14 6035
Kelowna 09:28:11 -24.3 Dark Up 19.6 151.1 Really Low 09:13:11 - 09:43:11 6009
Peachland 09:28:13 -24.4 Dark Up 19.6 150.8 Really Low 09:13:13 - 09:43:13 5997
Summerland 09:28:12 -24.6 Dark Up 19.8 150.9 Really Low 09:13:12 - 09:43:12 5991
Penticton 09:28:13 -24.6 Dark Up 19.9 151.0 Really Low 09:13:13 - 09:43:13 5989
Oliver 09:28:13 -24.9 Dark Up 20.2 150.9 Low 09:13:13 - 09:43:13 5970
Anarchist Mountain Observatory 09:28:13 -25.0 Dark Up 20.4 151.1 Low 09:13:13 - 09:43:13 5965
Okanogan 09:28:15 -25.7 Dark Up 20.9 150.7 Low 09:13:15 - 09:43:15 5924
Brewster 09:28:16 -26.0 Dark Up 21.1 150.5 Low 09:13:16 - 09:43:16 5904
Manson/Chelan 09:28:20 -26.2 Dark Up 21.2 150.1 Low 09:13:20 - 09:43:20 5884
Victoria 09:28:32 -26.5 Dark Up 19.5 147.2 Really Low 09:13:32 - 09:43:32 5854
Wenatchee 09:28:21 -26.7 Dark Up 21.5 149.9 Low 09:13:21 - 09:43:21 5853
Ellensburg 09:28:23 -27.2 Dark Up 21.8 149.6 Low 09:13:23 - 09:43:23 5824
PNWRO 09:28:17 -27.6 Dark Up 23.2 151.0 Low 09:13:17 - 09:43:17 5800
Yakima 09:28:23 -27.5 Dark Up 22.1 149.5 Low 09:13:23 - 09:43:23 5800
Toppenish/White Swan 09:28:23 -27.7 Dark Up 22.4 149.6 Low 09:13:23 - 09:43:23 5790
The Dalles 09:28:29 -28.6 Dark Up 22.8 148.7 Low 09:13:29 - 09:43:29 5726
Dunrhomin 09:27:11 -26.9 Dark Down 32.3 163.8 Up 09:12:11 - 09:42:11 5720
Nikitin 09:27:11 -27.0 Dark Down 32.4 163.8 Up 09:12:11 - 09:42:11 5707
Maupin 09:28:30 -29.0 Dark Up 23.2 148.7 Low 09:13:30 - 09:43:30 5702
CU-SBO 09:27:11 -27.1 Dark Down 32.5 163.7 Up 09:12:11 - 09:42:11 5702
Sisters 09:28:34 -29.9 Dark Up 23.7 148.0 Low 09:13:34 - 09:43:34 5637
Bend 09:28:33 -30.0 Dark Up 24.0 148.2 Low 09:13:33 - 09:43:33 5627
Oregon Observatory 09:28:33 -30.2 Dark Up 24.1 148.1 Low 09:13:33 - 09:43:33 5613
Chiloquin 09:28:40 -31.6 Dark Up 25.1 147.4 Low 09:13:40 - 09:43:40 5518
Klamath Falls 09:28:39 -31.9 Dark Up 25.4 147.4 Low 09:13:39 - 09:43:39 5497
Cedarville 09:28:32 -32.0 Dark Up 26.6 148.7 Low 09:13:32 - 09:43:32 5487
Fall River/Burney 09:28:38 -32.8 Dark Up 26.6 147.4 Low 09:13:38 - 09:43:38 5426
Gimple 09:28:38 -33.5 Dark Up 27.6 147.7 Low 09:13:38 - 09:43:38 5376
Greenville 09:28:39 -33.5 Dark Up 27.5 147.6 Low 09:13:39 - 09:43:39 5374
Portola 09:28:36 -33.6 Dark Up 28.0 148.0 Low 09:13:36 - 09:43:36 5363
Quincy 09:28:39 -33.7 Dark Up 27.7 147.6 Low 09:13:39 - 09:43:39 5360
Reno 09:28:34 -33.6 Dark Up 28.5 148.5 Low 09:13:34 - 09:43:34 5359
Yerington 09:28:31 -33.9 Dark Up 29.2 149.0 Low 09:13:31 - 09:43:31 5336
Carson City 09:28:34 -33.9 Dark Up 28.8 148.5 Low 09:13:34 - 09:43:34 5335
Gardnerville 09:28:35 -34.2 Dark Up 29.0 148.4 Low 09:13:35 - 09:43:35 5318
Hawthorne 09:28:29 -34.1 Dark Up 29.8 149.4 Low 09:13:29 - 09:43:29 5315
Lee Vining 09:28:33 -34.8 Dark Up 30.1 148.8 Up 09:13:33 - 09:43:33 5264
Beatty 09:28:21 -34.8 Dark Up 31.9 150.8 Up 09:13:21 - 09:43:21 5242
Bishop 09:28:31 -35.0 Dark Up 30.9 149.3 Up 09:13:31 - 09:43:31 5237
Patrick 09:28:05 -34.8 Dark Up 34.3 153.3 Up 09:13:05 - 09:43:05 5200
Laughlin/Bullhead City 09:28:10 -35.3 Dark Up 34.3 152.5 Up 09:13:10 - 09:43:10 5165
Lake Havasu City 09:28:10 -35.8 Dark Up 35.0 152.6 Up 09:13:10 - 09:43:10 5121
George/Scottsdale 09:27:56 -35.2 Dark Down 36.6 155.0 Up 09:12:56 - 09:42:56 5120
Idyllwild 09:28:25 -37.5 Dark Up 34.7 149.8 Up 09:13:25 - 09:43:25 5007
Calipatria 09:28:18 -37.5 Dark Up 35.7 150.9 Up 09:13:18 - 09:43:18 4988
Wildwood 09:28:35 -38.0 Dark Up 33.6 148.0 Up 09:13:35 - 09:43:35 4987
Yuma 09:28:13 -37.4 Dark Up 36.5 151.7 Up 09:13:13 - 09:43:13 4976

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 523703, (2029/04/23 09:17UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 17.60 106
35Eta Oph      17:10:22.7 -15:43:29  2.6  4.76 115
PPM 233351     17:37:36.2 -15:34:15  6.2  1.83 121
PPM 233141     17:29:29.6 -16:02:04  7.5  0.18 120
PPM 233151     17:29:57.9 -15:54:48  8.6  0.05 120
523703         17:30:08.7 -15:56:19 16.0       120
Positions are for J2000

Event circumstances last updated at 2023/06/06 04:02:09 UT

Marc W. Buie, Southwest Research Institute

RECON