RECON: TNO occultation with 13KY18

Event between 13KY18 and star GA0640:24307804 with event index number of 2064581

Geocentric closest approach at 2024/07/21 07:10:34 UTC

J2000 position of star is 18:12:10.5 -24:31:05
Equinox of date position of star is 18:13:32.4 -24:30:40
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 25 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=21.4

[RECON map]
TNO is 29.2 AU from the Sun and 28.3 AU from the Earth.
The TNO is moving 20.8 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 106 seconds.
The 1-sigma cross-track error in the shadow position is 1115 km.
The sky-plane scale is 20516.6 km/arcsec.

The TNO has an absolute magnitude Hv=6.7
Diameter=271.7 km assuming a 5% albedo -- 13.1 sec chord
Diameter=110.9 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is 1:1
 
 
 
 
 
 

Star training set for 13KY18, (2024/07/21 07:11UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:55.0 -26:29:04  0.9 23.23  47
Nunki          18:56:47.2 -26:15:50  2.0  9.89  15
11 Sgr         18:13:13.3 -23:41:39  4.5  0.82  25
PPM 268072     18:14:53.4 -25:08:36  8.4  0.69  24
PPM 268019     18:13:11.9 -24:26:43  9.4  0.13  25
13KY18         18:13:40.9 -24:30:37 16.0        24
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 16.2 km RECON observability=0.6 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)
Kamloops 07:09:39 -17.8 AT Up 13.9 192.7 Really Low 07:00:19 - 07:18:59 12072
Kelowna 07:09:36 -18.7 Dark Up 14.5 193.6 Really Low 07:00:16 - 07:18:56 12038
Peachland 07:09:36 -18.8 Dark Up 14.7 193.3 Really Low 07:00:16 - 07:18:56 12037
Summerland 07:09:35 -19.0 Dark Up 14.8 193.4 Really Low 07:00:15 - 07:18:55 12031
Victoria 07:09:48 -19.4 Dark Up 16.4 190.0 Really Low 07:00:28 - 07:19:08 12030
Penticton 07:09:35 -19.0 Dark Up 14.9 193.5 Really Low 07:00:15 - 07:18:55 12028
Oliver 07:09:35 -19.4 Dark Up 15.2 193.5 Really Low 07:00:15 - 07:18:55 12016
Anarchist Mountain Observatory 07:09:35 -19.6 Dark Up 15.3 193.7 Really Low 07:00:15 - 07:18:55 12009
Tonasket 07:09:35 -19.9 Dark Up 15.6 193.7 Really Low 07:00:15 - 07:18:55 11999
Okanogan 07:09:35 -20.2 Dark Up 16.0 193.5 Really Low 07:00:15 - 07:18:55 11989
Brewster 07:09:35 -20.4 Dark Up 16.3 193.4 Really Low 07:00:15 - 07:18:55 11982
Manson/Chelan 07:09:36 -20.6 Dark Up 16.5 193.0 Really Low 07:00:16 - 07:18:56 11978
Wenatchee 07:09:36 -21.0 Dark Up 17.0 192.9 Really Low 07:00:16 - 07:18:56 11963
Ellensburg 07:09:37 -21.3 Dark Up 17.5 192.7 Really Low 07:00:17 - 07:18:57 11950
Yakima 07:09:36 -21.7 Dark Up 17.9 192.7 Really Low 07:00:16 - 07:18:56 11935
Sleaford 07:08:57 -17.6 AT Up 9.6 205.5 Really Low 06:59:37 - 07:18:17 11933
Toppenish/White Swan 07:09:36 -22.0 Dark Up 18.1 192.9 Really Low 07:00:16 - 07:18:56 11925
Goldendale 07:09:37 -22.4 Dark Up 18.7 192.6 Really Low 07:00:17 - 07:18:57 11908
The Dalles 07:09:37 -22.6 Dark Up 18.9 192.2 Really Low 07:00:17 - 07:18:57 11903
PNWRO 07:09:31 -22.6 Dark Up 18.2 194.3 Really Low 07:00:11 - 07:18:51 11895
Maupin 07:09:38 -23.0 Dark Up 19.3 192.4 Really Low 07:00:18 - 07:18:58 11886
Sisters 07:09:38 -23.8 Dark Up 20.3 192.0 Low 07:00:18 - 07:18:58 11855
Bend 07:09:38 -24.0 Dark Up 20.5 192.2 Low 07:00:18 - 07:18:58 11843
Oregon Observatory 07:09:38 -24.2 Dark Up 20.6 192.1 Low 07:00:18 - 07:18:58 11837
North Lake 07:09:36 -24.9 Dark Up 21.2 192.7 Low 07:00:16 - 07:18:56 11804
Chiloquin 07:09:38 -25.4 Dark Up 22.0 191.8 Low 07:00:18 - 07:18:58 11784
Klamath Falls 07:09:37 -25.7 Dark Up 22.3 191.9 Low 07:00:17 - 07:18:57 11768
Lakeview 07:09:33 -26.0 Dark Up 22.1 193.3 Low 07:00:13 - 07:18:53 11751
Cedarville 07:09:32 -26.7 Dark Up 22.7 193.5 Low 07:00:12 - 07:18:52 11719
Fall River/Burney 07:09:35 -26.9 Dark Up 23.4 192.4 Low 07:00:15 - 07:18:55 11709
Susanville 07:09:32 -27.7 Dark Up 23.9 193.2 Low 07:00:12 - 07:18:52 11671
Greenville 07:09:33 -27.9 Dark Up 24.2 192.9 Low 07:00:13 - 07:18:53 11661
Gimple 07:09:33 -27.9 Dark Up 24.2 193.0 Low 07:00:13 - 07:18:53 11660
Quincy 07:09:33 -28.1 Dark Up 24.4 192.9 Low 07:00:13 - 07:18:53 11651
Portola 07:09:32 -28.3 Dark Up 24.5 193.4 Low 07:00:12 - 07:18:52 11640
Reno 07:09:29 -28.7 Dark Up 24.6 194.1 Low 07:00:09 - 07:18:49 11619
Carson City 07:09:29 -29.0 Dark Up 25.0 194.1 Low 07:00:09 - 07:18:49 11601
Gardnerville 07:09:28 -29.3 Dark Up 25.2 194.2 Low 07:00:08 - 07:18:48 11588
Yerington 07:09:25 -29.3 Dark Up 25.0 194.8 Low 07:00:05 - 07:18:45 11583
Hawthorne 07:09:23 -29.9 Dark Up 25.4 195.3 Low 07:00:03 - 07:18:43 11552
Lee Vining 07:09:25 -30.3 Dark Up 26.0 194.9 Low 07:00:05 - 07:18:45 11530
Tonopah 07:09:17 -30.6 Dark Up 25.5 196.8 Low 06:59:57 - 07:18:37 11510
Bishop 07:09:22 -31.1 Dark Up 26.4 195.7 Low 07:00:02 - 07:18:42 11488
Beatty 07:09:15 -31.8 Dark Up 26.5 197.4 Low 06:59:55 - 07:18:35 11440
Dunrhomin 07:08:35 -29.4 Dark Up 20.0 207.5 Low 06:59:15 - 07:17:55 11425
CU-SBO 07:08:35 -29.6 Dark Up 20.3 207.5 Low 06:59:15 - 07:17:55 11414
Indian Springs 07:09:10 -32.3 Dark Up 26.6 198.4 Low 06:59:50 - 07:18:30 11407
Henderson 07:09:07 -32.9 Dark Up 26.9 199.2 Low 06:59:47 - 07:18:27 11366
Patrick 07:09:02 -33.7 Dark Up 27.2 200.4 Low 06:59:42 - 07:18:22 11313
Laughlin/Bullhead City 07:09:04 -33.8 Dark Up 27.6 199.7 Low 06:59:44 - 07:18:24 11309
Wildwood 07:09:20 -34.2 Dark Up 29.6 196.0 Low 07:00:00 - 07:18:40 11305
Kingman/Dolan Springs 07:09:02 -33.9 Dark Up 27.4 200.2 Low 06:59:42 - 07:18:22 11303
Mohave Valley 07:09:04 -34.1 Dark Up 27.9 199.8 Low 06:59:44 - 07:18:24 11293
Lake Havasu City 07:09:03 -34.5 Dark Up 28.2 200.1 Low 06:59:43 - 07:18:23 11266
Idyllwild 07:09:12 -34.9 Dark Up 29.5 197.9 Low 06:59:52 - 07:18:32 11258
Parker 07:09:03 -34.9 Dark Up 28.5 200.2 Low 06:59:43 - 07:18:23 11244
Calipatria 07:09:07 -35.7 Dark Up 29.8 199.2 Low 06:59:47 - 07:18:27 11202
George/Scottsdale 07:08:52 -35.6 Dark Up 28.2 202.6 Low 06:59:32 - 07:18:12 11178
Yuma 07:09:03 -36.3 Dark Up 29.9 200.1 Low 06:59:43 - 07:18:23 11161

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, (2024/07/21 07:11UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 23.23  47
Nunki          18:55:15.9 -26:17:49  2.0  9.89  15
11 Sgr         18:11:43.4 -23:42:05  4.5  0.82  25
PPM 268072     18:13:22.6 -25:09:06  8.4  0.69  24
PPM 268019     18:11:41.5 -24:27:10  9.4  0.13  25
13KY18         18:12:10.5 -24:31:05 16.0        25
Positions are for J2000

Event circumstances last updated at 2022/03/28 23:29:01 UT

Marc W. Buie, Southwest Research Institute

RECON