RECON: TNO occultation with 13KY18

Event between 13KY18 and star GA0640:23066818 with event index number of 2063553

Geocentric closest approach at 2023/06/03 10:16:49 UTC

J2000 position of star is 18:07:34.3 -24:13:47
Equinox of date position of star is 18:08:55.9 -24:13:31
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 29 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=21.4

[RECON map]
TNO is 29.4 AU from the Sun and 28.4 AU from the Earth.
The TNO is moving 22.1 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 96 seconds.
The 1-sigma cross-track error in the shadow position is 1066 km.
The sky-plane scale is 20602.8 km/arcsec.

The TNO has an absolute magnitude Hv=6.7
Diameter=271.7 km assuming a 5% albedo -- 12.3 sec chord
Diameter=110.9 km assuming a 30% albedo -- 5.0 sec chord
Dynamical classification is 1:1
 
 
 
 
 
 

Star training set for 13KY18, (2023/06/03 10:24UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:50.8 -26:28:55  0.9 22.26   7
Nunki          18:56:42.9 -26:15:56  2.0 10.97  39
11 Sgr         18:13:09.1 -23:41:40  4.5  1.09  30
PPM 267848     18:07:30.8 -24:11:30  8.1  0.34  28
PPM 267918     18:09:41.6 -24:24:32  9.2  0.24  29
13KY18         18:09:00.4 -24:13:30 16.4        29
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 17.5 km RECON observability=0.6 and success probability=17.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 10:15:53 -11.1 NT Up 14.2 192.5 Really Low 10:07:25 - 10:24:22 2
Kelowna 10:15:50 -11.5 NT Up 14.8 193.4 Really Low 10:07:22 - 10:24:19 -33
Peachland 10:15:51 -11.7 NT Up 15.0 193.1 Really Low 10:07:22 - 10:24:19 -33
Summerland 10:15:50 -11.7 NT Up 15.1 193.2 Really Low 10:07:22 - 10:24:19 -39
Victoria 10:16:02 -13.9 AT Up 16.7 189.8 Really Low 10:07:33 - 10:24:30 -39
Penticton 10:15:50 -11.8 NT Up 15.2 193.3 Really Low 10:07:22 - 10:24:19 -42
Oliver 10:15:50 -12.1 AT Up 15.5 193.4 Really Low 10:07:21 - 10:24:18 -54
Anarchist Mountain Observatory 10:15:49 -12.1 AT Up 15.7 193.5 Really Low 10:07:20 - 10:24:17 -61
Tonasket 10:15:49 -12.4 AT Up 16.0 193.5 Really Low 10:07:20 - 10:24:17 -72
Okanogan 10:15:49 -12.8 AT Up 16.3 193.4 Really Low 10:07:21 - 10:24:18 -82
Brewster 10:15:50 -13.1 AT Up 16.6 193.2 Really Low 10:07:21 - 10:24:18 -89
Manson/Chelan 10:15:51 -13.4 AT Up 16.9 192.9 Really Low 10:07:22 - 10:24:19 -93
Wenatchee 10:15:51 -13.8 AT Up 17.4 192.8 Really Low 10:07:22 - 10:24:19 -108
Ellensburg 10:15:51 -14.3 AT Up 17.8 192.6 Really Low 10:07:23 - 10:24:20 -121
Yakima 10:15:51 -14.6 AT Up 18.2 192.6 Really Low 10:07:23 - 10:24:20 -136
Sleaford 10:15:14 -4.5 CT Down 9.9 205.4 Really Low 10:06:45 - 10:23:42 -140
Toppenish/White Swan 10:15:50 -14.7 AT Up 18.4 192.8 Really Low 10:07:22 - 10:24:19 -147
Goldendale 10:15:51 -15.4 AT Up 19.0 192.4 Really Low 10:07:23 - 10:24:20 -163
The Dalles 10:15:52 -15.7 AT Up 19.3 192.1 Really Low 10:07:24 - 10:24:21 -169
PNWRO 10:15:45 -14.5 AT Up 18.5 194.2 Really Low 10:07:17 - 10:24:14 -178
Maupin 10:15:52 -16.0 AT Up 19.6 192.2 Really Low 10:07:23 - 10:24:20 -187
Sisters 10:15:53 -16.9 AT Up 20.6 191.8 Low 10:07:24 - 10:24:21 -217
Bend 10:15:52 -17.0 AT Up 20.8 192.1 Low 10:07:23 - 10:24:20 -230
Oregon Observatory 10:15:52 -17.2 AT Up 21.0 192.0 Low 10:07:24 - 10:24:21 -236
North Lake 10:15:50 -17.6 AT Up 21.5 192.5 Low 10:07:21 - 10:24:18 -269
Chiloquin 10:15:53 -18.5 Dark Up 22.3 191.7 Low 10:07:24 - 10:24:21 -289
Klamath Falls 10:15:52 -18.8 Dark Up 22.6 191.8 Low 10:07:24 - 10:24:21 -306
Lakeview 10:15:47 -18.2 Dark Up 22.5 193.1 Low 10:07:19 - 10:24:16 -323
Cedarville 10:15:46 -18.7 Dark Up 23.1 193.4 Low 10:07:18 - 10:24:15 -356
Fall River/Burney 10:15:50 -19.6 Dark Up 23.7 192.2 Low 10:07:22 - 10:24:19 -365
Susanville 10:15:47 -19.8 Dark Up 24.2 193.0 Low 10:07:19 - 10:24:16 -404
Greenville 10:15:48 -20.2 Dark Up 24.5 192.8 Low 10:07:20 - 10:24:17 -414
Gimple 10:15:48 -20.2 Dark Up 24.5 192.8 Low 10:07:19 - 10:24:16 -415
Quincy 10:15:48 -20.4 Dark Up 24.7 192.8 Low 10:07:20 - 10:24:17 -424
Portola 10:15:46 -20.3 Dark Up 24.8 193.3 Low 10:07:18 - 10:24:15 -436
Reno 10:15:44 -20.2 Dark Up 24.9 193.9 Low 10:07:15 - 10:24:12 -457
Carson City 10:15:43 -20.5 Dark Up 25.3 194.0 Low 10:07:15 - 10:24:12 -476
Gardnerville 10:15:43 -20.7 Dark Up 25.5 194.0 Low 10:07:14 - 10:24:11 -489
Yerington 10:15:41 -20.4 Dark Up 25.3 194.6 Low 10:07:12 - 10:24:09 -494
Hawthorne 10:15:39 -20.5 Dark Up 25.7 195.2 Low 10:07:10 - 10:24:07 -525
Lee Vining 10:15:40 -21.2 Dark Up 26.3 194.8 Low 10:07:12 - 10:24:09 -548
Tonopah 10:15:33 -20.3 Dark Up 25.8 196.6 Low 10:07:05 - 10:24:02 -568
Bishop 10:15:37 -21.4 Dark Up 26.8 195.6 Low 10:07:08 - 10:24:05 -590
Beatty 10:15:30 -21.0 Dark Up 26.8 197.2 Low 10:07:02 - 10:23:59 -639
Dunrhomin 10:14:53 -12.6 AT Up 20.3 207.4 Low 10:06:24 - 10:23:21 -657
CU-SBO 10:14:53 -12.8 AT Up 20.6 207.4 Low 10:06:24 - 10:23:21 -669
Indian Springs 10:15:26 -20.7 Dark Up 26.9 198.3 Low 10:06:58 - 10:23:55 -673
Henderson 10:15:23 -20.8 Dark Up 27.2 199.1 Low 10:06:55 - 10:23:52 -715
Patrick 10:15:18 -20.7 Dark Up 27.5 200.3 Low 10:06:50 - 10:23:47 -769
Laughlin/Bullhead City 10:15:21 -21.3 Dark Up 27.9 199.6 Low 10:06:52 - 10:23:49 -772
Wildwood 10:15:36 -24.1 Dark Up 30.0 195.8 Low 10:07:07 - 10:24:04 -775
Kingman/Dolan Springs 10:15:19 -21.0 Dark Up 27.8 200.1 Low 10:06:50 - 10:23:47 -778
Mohave Valley 10:15:21 -21.5 Dark Up 28.2 199.7 Low 10:06:52 - 10:23:49 -788
Lake Havasu City 10:15:19 -21.7 Dark Up 28.5 200.0 Low 10:06:51 - 10:23:48 -816
Idyllwild 10:15:28 -23.5 Dark Up 29.9 197.8 Low 10:07:00 - 10:23:57 -823
Parker 10:15:19 -21.9 Dark Up 28.8 200.1 Low 10:06:50 - 10:23:47 -838
Calipatria 10:15:23 -23.4 Dark Up 30.1 199.1 Up 10:06:54 - 10:23:51 -880
George/Scottsdale 10:15:09 -20.9 Dark Up 28.5 202.5 Low 10:06:41 - 10:23:38 -905
Yuma 10:15:19 -23.2 Dark Up 30.3 200.0 Up 10:06:51 - 10:23:48 -921

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, (2023/06/03 10:24UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 22.26   7
Nunki          18:55:15.9 -26:17:49  2.0 10.97  39
11 Sgr         18:11:43.4 -23:42:05  4.5  1.09  30
PPM 267848     18:06:04.7 -24:11:44  8.1  0.34  28
PPM 267918     18:08:15.4 -24:24:51  9.2  0.24  29
13KY18         18:07:34.3 -24:13:47 16.4        29
Positions are for J2000

Event circumstances last updated at 2022/03/12 02:00:43 UT

Marc W. Buie, Southwest Research Institute

RECON