RECON: TNO occultation with 523717

Event between (523717) 14KY101 and star GA0680:12654134 with event index number of 2616844

Geocentric closest approach at 2024/08/13 03:55:52 UTC

J2000 position of star is 17:29:30.8 -21:11:11
Equinox of date position of star is 17:30:58.5 -21:12:14
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 27 degrees from the moon. Moon is 55% illuminated.
Apparent brightness V=22.2

[RECON map]
Object is 36.1 AU from the Sun and 35.5 AU from the Earth.
Apparent velocity is 10.6 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 788 seconds.
The 1-sigma cross-track error in the shadow position is 2532 km.
The sky-plane scale is 25748.2 km/arcsec.

The object has an absolute magnitude Hv=6.5
Diameter=316.2 km assuming a 5% albedo -- 28.7 sec chord
Diameter=129.1 km assuming a 30% albedo -- 11.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 523717, (2024/08/13 03:56UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:55.3 -26:29:04  0.9 14.70  13
35Eta Oph      17:11:47.5 -15:45:13  2.6  7.10  24
PPM 266825     17:26:10.5 -21:27:44  6.1  1.15  26
PPM 266907     17:29:44.4 -20:58:55  8.3  0.37  26
PPM 266927     17:30:44.5 -21:15:49  9.7  0.08  27
523717         17:30:59.1 -21:12:15 16.5        27
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 19.3 km RECON observability=0.2 and success probability=4.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 03:55:02 -4.9 CT Up 18.1 178.1 Really Low 03:40:02 - 04:10:02 1127
Kelowna 03:54:57 -5.8 CT Up 18.9 179.0 Really Low 03:39:57 - 04:09:57 1092
Peachland 03:54:59 -5.7 CT Up 19.1 178.7 Really Low 03:39:59 - 04:09:59 1091
Summerland 03:54:58 -5.9 CT Up 19.2 178.8 Really Low 03:39:58 - 04:09:58 1085
Penticton 03:54:58 -6.0 CT Up 19.3 178.9 Really Low 03:39:58 - 04:09:58 1081
Victoria 03:55:25 -4.3 CT Up 20.2 175.2 Low 03:40:25 - 04:10:25 1069
Oliver 03:54:58 -6.1 NT Up 19.6 178.9 Really Low 03:39:58 - 04:09:58 1068
Anarchist Mountain Observatory 03:54:57 -6.3 NT Up 19.8 179.1 Really Low 03:39:57 - 04:09:57 1061
Okanogan 03:54:59 -6.5 NT Up 20.4 178.9 Low 03:39:59 - 04:09:59 1038
Sleaford 03:53:32 -11.2 NT Up 16.0 191.8 Really Low 03:38:32 - 04:08:32 1036
Brewster 03:55:00 -6.6 NT Up 20.7 178.7 Low 03:40:00 - 04:10:00 1029
Manson/Chelan 03:55:03 -6.5 NT Up 20.9 178.3 Low 03:40:03 - 04:10:03 1024
Wenatchee 03:55:04 -6.6 NT Up 21.4 178.1 Low 03:40:04 - 04:10:04 1006
Ellensburg 03:55:06 -6.7 NT Up 21.8 177.9 Low 03:40:06 - 04:10:06 991
Yakima 03:55:07 -6.9 NT Up 22.2 177.9 Low 03:40:07 - 04:10:07 974
Toppenish/White Swan 03:55:05 -7.1 NT Up 22.4 178.1 Low 03:40:05 - 04:10:05 964
PNWRO 03:54:55 -8.1 NT Up 22.8 179.5 Low 03:39:55 - 04:09:55 937
The Dalles 03:55:12 -7.0 NT Up 23.2 177.3 Low 03:40:12 - 04:10:12 937
Maupin 03:55:11 -7.3 NT Up 23.6 177.4 Low 03:40:11 - 04:10:11 918
Sisters 03:55:16 -7.4 NT Up 24.5 176.9 Low 03:40:16 - 04:10:16 883
Bend 03:55:14 -7.7 NT Up 24.7 177.1 Low 03:40:14 - 04:10:14 870
Oregon Observatory 03:55:15 -7.7 NT Up 24.9 177.0 Low 03:40:15 - 04:10:15 863
Chiloquin 03:55:19 -8.1 NT Up 26.2 176.5 Low 03:40:19 - 04:10:19 804
Klamath Falls 03:55:19 -8.3 NT Up 26.5 176.6 Low 03:40:19 - 04:10:19 787
Cedarville 03:55:08 -9.6 NT Up 27.3 178.2 Low 03:40:08 - 04:10:08 740
Fall River/Burney 03:55:17 -9.1 NT Up 27.7 177.0 Low 03:40:17 - 04:10:17 725
Greenville 03:55:14 -9.8 NT Up 28.6 177.4 Low 03:40:14 - 04:10:14 675
Gimple 03:55:14 -9.9 NT Up 28.6 177.5 Low 03:40:14 - 04:10:14 674
Quincy 03:55:15 -9.9 NT Up 28.8 177.4 Low 03:40:15 - 04:10:15 664
Portola 03:55:11 -10.3 NT Up 29.0 177.9 Low 03:40:11 - 04:10:11 654
Reno 03:55:06 -10.8 NT Up 29.3 178.6 Low 03:40:06 - 04:10:06 634
Carson City 03:55:06 -11.0 NT Up 29.6 178.6 Low 03:40:06 - 04:10:06 615
Gardnerville 03:55:06 -11.2 NT Up 29.9 178.6 Low 03:40:06 - 04:10:06 601
Yerington 03:55:01 -11.5 NT Up 29.8 179.2 Low 03:40:01 - 04:10:01 598
Hawthorne 03:54:57 -12.1 AT Up 30.3 179.8 Up 03:39:57 - 04:09:57 568
Lee Vining 03:55:02 -12.1 AT Up 30.8 179.3 Up 03:40:02 - 04:10:02 541
Bishop 03:54:56 -12.8 AT Up 31.5 180.1 Up 03:39:56 - 04:09:56 500
Dunrhomin 03:53:14 -19.4 Dark Up 27.4 193.5 Low 03:38:14 - 04:08:14 495
Nikitin 03:53:13 -19.5 Dark Up 27.6 193.5 Low 03:38:13 - 04:08:13 485
CU-SBO 03:53:14 -19.5 Dark Up 27.7 193.4 Low 03:38:14 - 04:08:14 482
Beatty 03:54:43 -14.2 AT Up 31.9 181.8 Up 03:39:43 - 04:09:43 456
Patrick 03:54:20 -16.9 AT Up 33.2 184.9 Up 03:39:20 - 04:09:20 334
Laughlin/Bullhead City 03:54:26 -16.5 AT Up 33.5 184.2 Up 03:39:26 - 04:09:26 327
Wildwood 03:55:00 -14.3 AT Up 34.7 179.8 Up 03:40:00 - 04:10:00 305
Lake Havasu City 03:54:24 -17.1 AT Up 34.2 184.5 Up 03:39:24 - 04:09:24 282
Idyllwild 03:54:44 -15.8 AT Up 35.1 181.9 Up 03:39:44 - 04:09:44 263
Calipatria 03:54:35 -16.9 AT Up 35.6 183.2 Up 03:39:35 - 04:09:35 209
George/Scottsdale 03:54:04 -19.1 Dark Up 34.8 187.2 Up 03:39:04 - 04:09:04 202
Yuma 03:54:27 -17.8 AT Up 36.0 184.3 Up 03:39:27 - 04:09:27 171

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 523717, (2024/08/13 03:56UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 14.70  13
35Eta Oph      17:10:22.7 -15:43:29  2.6  7.10  24
PPM 266825     17:24:42.0 -21:26:30  6.1  1.15  26
PPM 266907     17:28:16.2 -20:57:49  8.3  0.37  26
PPM 266927     17:29:16.1 -21:14:44  9.7  0.08  27
523717         17:29:30.8 -21:11:11 16.5        27
Positions are for J2000

Event circumstances last updated at 2024/06/11 03:49:56 UT

Marc W. Buie, Southwest Research Institute

RECON