RECON: TNO occultation with 523718

Event between (523718) 14KZ101 and star GA0840:07139544 with event index number of 2329820

Geocentric closest approach at 2024/06/20 04:26:43 UTC

J2000 position of star is 18:08:40.1 -05:25:34
Equinox of date position of star is 18:09:58.4 -05:25:14
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 34 degrees from the moon. Moon is 96% illuminated.
Apparent brightness V=22.0

[RECON map]
Object is 35.4 AU from the Sun and 34.4 AU from the Earth.
Apparent velocity is 22.9 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 276 seconds.
The 1-sigma cross-track error in the shadow position is 1451 km.
The sky-plane scale is 24970.3 km/arcsec.

The object has an absolute magnitude Hv=6.5
Diameter=316.2 km assuming a 5% albedo -- 13.2 sec chord
Diameter=129.1 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 523718, (2024/06/20 04:27UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.7 -26:29:03  0.9 31.65   3
60Bet Oph      17:44:40.9 +04:33:32  2.8 11.81  37
PPM 201278     18:00:54.8 -04:49:17  5.8  2.33  32
PPM 201453     18:10:55.2 -05:38:53  7.6  0.33  34
PPM 201435     18:10:06.1 -05:37:25  9.0  0.21  34
523718         18:09:58.5 -05:25:14 15.9        34
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 3.3 sigma about the mid-time.
The median site spacing is 33.2 km RECON observability=0.2 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:28:32 -7.1 NT Up 22.3 133.9 Low 04:13:32 - 04:43:32 6331
Kamloops 04:29:05 -2.2 CT Up 16.0 120.4 Really Low 04:14:05 - 04:44:05 6190
Kelowna 04:29:06 -3.2 CT Up 16.9 121.0 Really Low 04:14:06 - 04:44:06 6141
Peachland 04:29:07 -3.1 CT Up 16.8 120.7 Really Low 04:14:07 - 04:44:07 6133
Summerland 04:29:07 -3.2 CT Up 17.0 120.7 Really Low 04:14:07 - 04:44:07 6124
Penticton 04:29:07 -3.3 CT Up 17.1 120.8 Really Low 04:14:07 - 04:44:07 6120
Oliver 04:29:08 -3.6 CT Up 17.2 120.7 Really Low 04:14:08 - 04:44:08 6097
Anarchist Mountain Observatory 04:29:08 -3.8 CT Up 17.4 120.8 Really Low 04:14:08 - 04:44:08 6087
Okanogan 04:29:11 -4.1 CT Up 17.7 120.5 Really Low 04:14:11 - 04:44:11 6042
Victoria 04:29:17 -2.1 CT Up 15.4 117.3 Really Low 04:14:17 - 04:44:17 6034
Brewster 04:29:12 -4.2 CT Up 17.7 120.2 Really Low 04:14:12 - 04:44:12 6023
Manson/Chelan 04:29:13 -4.2 CT Up 17.6 119.9 Really Low 04:14:13 - 04:44:13 6007
Wenatchee 04:29:15 -4.4 CT Up 17.7 119.6 Really Low 04:14:15 - 04:44:15 5974
Ellensburg 04:29:16 -4.6 CT Up 17.8 119.3 Really Low 04:14:16 - 04:44:16 5944
Yakima 04:29:18 -4.9 CT Up 18.0 119.2 Really Low 04:14:18 - 04:44:18 5916
Toppenish/White Swan 04:29:18 -5.1 CT Up 18.2 119.3 Really Low 04:14:18 - 04:44:18 5901
PNWRO 04:29:16 -6.1 NT Up 19.3 120.4 Really Low 04:14:16 - 04:44:16 5883
The Dalles 04:29:22 -5.2 CT Up 18.1 118.4 Really Low 04:14:22 - 04:44:22 5842
Maupin 04:29:23 -5.6 CT Up 18.4 118.4 Really Low 04:14:23 - 04:44:23 5813
Sisters 04:29:27 -5.9 CT Up 18.5 117.7 Really Low 04:14:27 - 04:44:27 5747
Bend 04:29:27 -6.2 NT Up 18.7 117.9 Really Low 04:14:27 - 04:44:27 5730
Oregon Observatory 04:29:27 -6.2 NT Up 18.7 117.7 Really Low 04:14:27 - 04:44:27 5717
Chiloquin 04:29:32 -6.9 NT Up 19.1 117.0 Really Low 04:14:32 - 04:44:32 5616
Klamath Falls 04:29:33 -7.1 NT Up 19.3 117.0 Really Low 04:14:33 - 04:44:33 5590
Cedarville 04:29:31 -8.5 NT Up 20.7 118.0 Low 04:14:31 - 04:44:31 5546
Dunrhomin 04:28:59 -17.0 AT Up 30.7 130.3 Up 04:13:59 - 04:43:59 5514
Fall River/Burney 04:29:35 -8.1 NT Up 20.1 116.9 Low 04:14:35 - 04:44:35 5501
Nikitin 04:29:00 -17.1 AT Up 30.8 130.2 Up 04:14:00 - 04:44:00 5499
CU-SBO 04:29:00 -17.2 AT Up 30.8 130.1 Up 04:14:00 - 04:44:00 5494
Gimple 04:29:37 -9.0 NT Up 20.9 117.0 Low 04:14:37 - 04:44:37 5433
Greenville 04:29:37 -9.0 NT Up 20.8 116.9 Low 04:14:37 - 04:44:37 5433
Quincy 04:29:38 -9.1 NT Up 20.9 116.9 Low 04:14:38 - 04:44:38 5417
Portola 04:29:37 -9.5 NT Up 21.3 117.2 Low 04:14:37 - 04:44:37 5410
Reno 04:29:36 -10.0 NT Up 21.9 117.6 Low 04:14:36 - 04:44:36 5392
Carson City 04:29:37 -10.3 NT Up 22.0 117.5 Low 04:14:37 - 04:44:37 5363
Yerington 04:29:36 -10.8 NT Up 22.6 117.9 Low 04:14:36 - 04:44:36 5351
Gardnerville 04:29:38 -10.5 NT Up 22.2 117.4 Low 04:14:38 - 04:44:38 5344
Hawthorne 04:29:36 -11.4 NT Up 23.2 118.2 Low 04:14:36 - 04:44:36 5316
Lee Vining 04:29:39 -11.5 NT Up 23.1 117.6 Low 04:14:39 - 04:44:39 5268
Bishop 04:29:39 -12.3 AT Up 23.9 117.9 Low 04:14:39 - 04:44:39 5222
Beatty 04:29:36 -13.6 AT Up 25.2 119.0 Low 04:14:36 - 04:44:36 5192
Patrick 04:29:33 -16.3 AT Up 28.0 120.6 Low 04:14:33 - 04:44:33 5082
Laughlin/Bullhead City 04:29:35 -16.1 AT Up 27.6 119.9 Low 04:14:35 - 04:44:35 5057
Lake Havasu City 04:29:36 -16.7 AT Up 28.1 119.8 Low 04:14:36 - 04:44:36 5001
George/Scottsdale 04:29:31 -18.7 Dark Up 30.3 121.4 Up 04:14:31 - 04:44:31 4947
Wildwood 04:29:47 -14.4 AT Up 25.2 116.4 Low 04:14:47 - 04:44:47 4944
Idyllwild 04:29:43 -15.8 AT Up 26.8 117.7 Low 04:14:43 - 04:44:43 4924
Calipatria 04:29:42 -17.0 AT Up 27.9 118.3 Low 04:14:42 - 04:44:42 4876
Yuma 04:29:40 -17.8 AT Up 28.8 118.8 Low 04:14:40 - 04:44:40 4843

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 523718, (2024/06/20 04:27UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 31.65   3
60Bet Oph      17:43:28.3 +04:34:06  2.8 11.81  37
PPM 201278     17:59:36.8 -04:49:18  5.8  2.33  32
PPM 201453     18:09:36.7 -05:39:15  7.6  0.33  34
PPM 201435     18:08:47.7 -05:37:45  9.0  0.21  34
523718         18:08:40.1 -05:25:34 15.9        34
Positions are for J2000

Event circumstances last updated at 2024/06/11 03:46:23 UT

Marc W. Buie, Southwest Research Institute

RECON