RECON: TNO occultation with 13KY18

Event between 13KY18 and star GA0640:26015769 with event index number of 2064402

Geocentric closest approach at 2024/06/11 06:55:07 UTC

J2000 position of star is 18:16:55.2 -24:27:50
Equinox of date position of star is 18:18:17.0 -24:27:16
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 135 degrees from the moon. Moon is 23% illuminated.
TNO apparent brightness V=21.3

[RECON map]
TNO is 29.2 AU from the Sun and 28.2 AU from the Earth.
The TNO is moving 23.0 km/sec on the sky relative to the star, or, 4.0 arcsec/hr.
The 1-sigma error in the time of the event is 113 seconds.
The 1-sigma cross-track error in the shadow position is 1050 km.
The sky-plane scale is 20475.7 km/arcsec.

The TNO has an absolute magnitude Hv=6.7
Diameter=271.7 km assuming a 5% albedo -- 11.8 sec chord
Diameter=110.9 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is 1:1
 
 
 
 
 
 

Star training set for 13KY18, (2024/06/11 07:04UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.6 -26:29:03  0.9 24.31 111
Nunki          18:56:46.8 -26:15:51  2.0  8.85 144
PPM 268291     18:23:01.7 -24:54:07  6.0  1.14 136
PPM 268162     18:18:03.9 -23:53:33  8.1  0.57 135
PPM 268172     18:18:27.7 -24:40:11  9.7  0.22 135
13KY18         18:18:25.2 -24:27:12 16.8       136
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 15.5 km RECON observability=0.4 and success probability=8.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 06:55:38 -14.8 AT Up 12.2 165.0 Really Low 06:45:45 - 07:05:31 1946
Kamloops 06:56:20 -14.8 AT Up 10.2 152.1 Really Low 06:46:27 - 07:06:13 1802
Kelowna 06:56:19 -15.8 AT Up 11.2 152.8 Really Low 06:46:26 - 07:06:12 1786
Peachland 06:56:21 -15.8 AT Up 11.2 152.5 Really Low 06:46:28 - 07:06:14 1779
Summerland 06:56:21 -16.0 AT Up 11.4 152.6 Really Low 06:46:28 - 07:06:14 1775
Penticton 06:56:20 -16.1 AT Up 11.5 152.7 Really Low 06:46:27 - 07:06:13 1774
Oliver 06:56:21 -16.4 AT Up 11.8 152.7 Really Low 06:46:28 - 07:06:14 1763
Anarchist Mountain Observatory 06:56:21 -16.6 AT Up 12.0 152.8 Really Low 06:46:28 - 07:06:14 1760
Tonasket 06:56:21 -16.9 AT Up 12.2 152.7 Really Low 06:46:28 - 07:06:14 1748
Okanogan 06:56:23 -17.2 AT Up 12.5 152.6 Really Low 06:46:30 - 07:06:16 1735
Brewster 06:56:24 -17.4 AT Up 12.7 152.4 Really Low 06:46:31 - 07:06:17 1723
Manson/Chelan 06:56:25 -17.6 AT Up 12.7 152.0 Really Low 06:46:32 - 07:06:18 1712
Victoria 06:56:33 -16.3 AT Up 11.1 149.3 Really Low 06:46:40 - 07:06:26 1694
Wenatchee 06:56:27 -18.0 AT Up 13.1 151.8 Really Low 06:46:34 - 07:06:20 1692
Ellensburg 06:56:28 -18.3 Dark Up 13.4 151.6 Really Low 06:46:35 - 07:06:21 1675
Yakima 06:56:29 -18.7 Dark Up 13.8 151.5 Really Low 06:46:36 - 07:06:22 1659
PNWRO 06:56:25 -19.6 Dark Up 14.8 152.9 Really Low 06:46:32 - 07:06:18 1656
Toppenish/White Swan 06:56:29 -19.0 Dark Up 14.0 151.7 Really Low 06:46:36 - 07:06:22 1653
Goldendale 06:56:31 -19.4 Dark Up 14.3 151.2 Really Low 06:46:38 - 07:06:24 1626
The Dalles 06:56:32 -19.6 Dark Up 14.4 150.9 Really Low 06:46:39 - 07:06:25 1613
Maupin 06:56:33 -20.0 Dark Up 14.8 150.9 Really Low 06:46:40 - 07:06:26 1597
Sisters 06:56:36 -20.7 Dark Up 15.4 150.4 Really Low 06:46:43 - 07:06:29 1555
Bend 06:56:36 -21.0 Dark Up 15.7 150.6 Really Low 06:46:43 - 07:06:29 1549
Oregon Observatory 06:56:36 -21.2 Dark Up 15.8 150.5 Really Low 06:46:43 - 07:06:29 1540
North Lake 06:56:36 -21.9 Dark Up 16.6 150.8 Really Low 06:46:43 - 07:06:29 1519
Dunrhomin 06:55:48 -26.6 Dark Down 23.7 164.8 Low 06:45:55 - 07:05:41 1518
CU-SBO 06:55:49 -26.9 Dark Down 23.9 164.6 Low 06:45:56 - 07:05:42 1505
Lakeview 06:56:36 -23.0 Dark Up 17.7 151.2 Really Low 06:46:43 - 07:06:29 1479
Chiloquin 06:56:40 -22.3 Dark Up 16.8 149.9 Really Low 06:46:47 - 07:06:33 1476
Klamath Falls 06:56:40 -22.7 Dark Up 17.2 149.9 Really Low 06:46:47 - 07:06:33 1462
Cedarville 06:56:37 -23.7 Dark Up 18.3 151.2 Really Low 06:46:44 - 07:06:30 1450
Fall River/Burney 06:56:41 -23.9 Dark Up 18.3 150.1 Really Low 06:46:48 - 07:06:34 1411
Susanville 06:56:40 -24.6 Dark Up 19.1 150.6 Really Low 06:46:47 - 07:06:33 1391
Gimple 06:56:42 -24.9 Dark Up 19.3 150.4 Really Low 06:46:49 - 07:06:35 1374
Greenville 06:56:42 -24.8 Dark Up 19.3 150.3 Really Low 06:46:49 - 07:06:35 1373
Portola 06:56:41 -25.3 Dark Up 19.7 150.7 Really Low 06:46:48 - 07:06:34 1364
Quincy 06:56:42 -25.0 Dark Up 19.5 150.3 Really Low 06:46:49 - 07:06:35 1363
Reno 06:56:39 -25.7 Dark Up 20.2 151.2 Low 06:46:46 - 07:06:32 1359
Carson City 06:56:40 -26.0 Dark Up 20.5 151.2 Low 06:46:47 - 07:06:33 1341
Yerington 06:56:38 -26.3 Dark Up 20.9 151.7 Low 06:46:45 - 07:06:31 1339
Gardnerville 06:56:40 -26.3 Dark Up 20.8 151.2 Low 06:46:47 - 07:06:33 1329
Hawthorne 06:56:37 -26.9 Dark Up 21.5 152.1 Low 06:46:44 - 07:06:30 1322
Tonopah 06:56:33 -27.6 Dark Up 22.5 153.2 Low 06:46:40 - 07:06:26 1315
Lee Vining 06:56:39 -27.3 Dark Up 21.9 151.5 Low 06:46:46 - 07:06:32 1287
Bishop 06:56:38 -28.1 Dark Up 22.7 152.1 Low 06:46:45 - 07:06:31 1263
Beatty 06:56:33 -28.8 Dark Down 23.7 153.4 Low 06:46:40 - 07:06:26 1258
Indian Springs 06:56:30 -29.3 Dark Down 24.3 154.4 Low 06:46:37 - 07:06:23 1252
Henderson 06:56:28 -30.0 Dark Down 25.1 154.9 Low 06:46:35 - 07:06:21 1230
Patrick 06:56:25 -30.7 Dark Down 26.0 155.8 Low 06:46:32 - 07:06:18 1207
Kingman/Dolan Springs 06:56:26 -30.9 Dark Down 26.1 155.6 Low 06:46:33 - 07:06:19 1192
Laughlin/Bullhead City 06:56:28 -30.9 Dark Down 26.0 155.1 Low 06:46:35 - 07:06:21 1185
Mohave Valley 06:56:28 -31.2 Dark Down 26.2 155.0 Low 06:46:35 - 07:06:21 1169
Lake Havasu City 06:56:28 -31.6 Dark Down 26.7 155.2 Low 06:46:35 - 07:06:21 1149
Parker 06:56:28 -31.9 Dark Down 27.0 155.1 Low 06:46:35 - 07:06:21 1129
George/Scottsdale 06:56:20 -32.7 Dark Down 28.2 157.4 Low 06:46:27 - 07:06:13 1128
Idyllwild 06:56:37 -31.9 Dark Down 26.5 152.8 Low 06:46:44 - 07:06:30 1079
Wildwood 06:56:44 -31.2 Dark Up 25.5 151.2 Low 06:46:51 - 07:06:37 1076
Calipatria 06:56:34 -32.7 Dark Down 27.5 153.8 Low 06:46:41 - 07:06:27 1055
Yuma 06:56:31 -33.3 Dark Down 28.2 154.5 Low 06:46:38 - 07:06:24 1039

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 13KY18, (2024/06/11 07:04UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 24.31 111
Nunki          18:55:15.9 -26:17:49  2.0  8.85 144
PPM 268291     18:21:31.4 -24:54:54  6.0  1.14 136
PPM 268162     18:16:34.3 -23:54:10  8.1  0.57 135
PPM 268172     18:16:57.6 -24:40:49  9.7  0.22 135
13KY18         18:16:55.2 -24:27:50 16.8       135
Positions are for J2000

Event circumstances last updated at 2022/03/27 23:27:03 UT

Marc W. Buie, Southwest Research Institute

RECON