RECON: TNO occultation with 13KY18

Event between 13KY18 and star GA0660:15403620 with event index number of 357818

Geocentric closest approach at 2020/06/13 06:41:23 UTC

J2000 position of star is 17:36:04.2 -23:19:45
Equinox of date position of star is 17:37:16.4 -23:20:25
Stellar brightness G=15.4, use SENSEUP=128
Star is 88 degrees from the moon. Moon is 50% illuminated.
TNO apparent brightness V=21.4

[RECON map]
TNO is 29.8 AU from the Sun and 28.8 AU from the Earth.
The TNO is moving 23.9 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 252 seconds.
The 1-sigma cross-track error in the shadow position is 1601 km.
The sky-plane scale is 20867.9 km/arcsec.

The TNO has an absolute magnitude Hv=6.7
Diameter=272.9 km assuming a 5% albedo -- 11.4 sec chord
Diameter=111.4 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is 1:1
 
 
 
 
 
 

Star training set for 13KY18, (2020/06/13 06:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.9 -26:28:32  0.9 15.42 103
35Eta Oph      17:11:33.1 -15:44:56  2.6  9.72  95
51 Oph         17:32:39.9 -23:58:36  4.8  1.24  89
PPM 267094     17:39:18.0 -22:35:33  8.4  0.88  88
PPM 267042     17:36:46.6 -23:33:30  9.5  0.25  88
13KY18         17:37:18.8 -23:20:26 15.4        88
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 3.6 sigma about the mid-time.
The median site spacing is 12.4 km RECON observability=0.6 and success probability=8.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 06:42:28 -14.7 AT Down 14.2 160.5 Really Low 06:27:28 - 06:57:28 1299
Kelowna 06:42:29 -15.0 AT Down 14.5 160.3 Really Low 06:27:29 - 06:57:29 1283
Summerland 06:42:30 -15.2 AT Down 14.7 160.1 Really Low 06:27:30 - 06:57:30 1272
Penticton 06:42:29 -15.3 AT Down 14.8 160.2 Really Low 06:27:29 - 06:57:29 1271
Oliver 06:42:30 -15.6 AT Down 15.1 160.2 Really Low 06:27:30 - 06:57:30 1258
Anarchist Mountain Observatory 06:42:30 -15.8 AT Down 15.3 160.3 Really Low 06:27:30 - 06:57:30 1255
Tonasket 06:42:30 -16.1 AT Down 15.6 160.2 Really Low 06:27:30 - 06:57:30 1242
Okanogan 06:42:31 -16.4 AT Down 15.9 160.1 Really Low 06:27:31 - 06:57:31 1228
Brewster 06:42:32 -16.6 AT Down 16.1 159.8 Really Low 06:27:32 - 06:57:32 1215
Manson/Chelan 06:42:33 -16.7 AT Down 16.2 159.5 Really Low 06:27:33 - 06:57:33 1203
Entiat 06:42:34 -16.9 AT Down 16.4 159.4 Really Low 06:27:34 - 06:57:34 1194
Victoria 06:42:42 -15.4 AT Down 14.8 156.6 Really Low 06:27:42 - 06:57:42 1187
Wenatchee 06:42:35 -17.2 AT Down 16.6 159.3 Really Low 06:27:35 - 06:57:35 1183
Ellensburg 06:42:36 -17.5 AT Down 17.0 159.0 Really Low 06:27:36 - 06:57:36 1164
Pasco 06:42:32 -18.5 Dark Down 18.0 160.3 Really Low 06:27:32 - 06:57:32 1150
Yakima 06:42:36 -17.9 AT Down 17.3 159.0 Really Low 06:27:36 - 06:57:36 1147
PNWRO 06:42:32 -18.8 Dark Down 18.3 160.5 Really Low 06:27:32 - 06:57:32 1143
Toppenish/White Swan 06:42:36 -18.1 Dark Down 17.6 159.1 Really Low 06:27:36 - 06:57:36 1140
Goldendale 06:42:38 -18.5 Dark Down 18.0 158.7 Really Low 06:27:38 - 06:57:38 1112
The Dalles 06:42:39 -18.7 Dark Down 18.1 158.3 Really Low 06:27:39 - 06:57:39 1097
Maupin 06:42:39 -19.1 Dark Down 18.5 158.4 Really Low 06:27:39 - 06:57:39 1081
Redmond 06:42:41 -19.9 Dark Down 19.3 158.2 Really Low 06:27:41 - 06:57:41 1040
Sisters 06:42:42 -19.8 Dark Down 19.2 157.8 Really Low 06:27:42 - 06:57:42 1036
Bend 06:42:41 -20.1 Dark Down 19.5 158.0 Really Low 06:27:41 - 06:57:41 1029
Oregon Observatory 06:42:42 -20.2 Dark Down 19.6 157.9 Really Low 06:27:42 - 06:57:42 1019
La Pine/Gilchrist 06:42:42 -20.4 Dark Down 19.8 157.8 Really Low 06:27:42 - 06:57:42 1009
North Lake 06:42:41 -21.0 Dark Down 20.4 158.3 Low 06:27:41 - 06:57:41 997
Niwot 06:41:49 -26.5 Dark Down 26.3 173.2 Low 06:26:49 - 06:56:49 994
SwRI 06:41:49 -26.6 Dark Down 26.4 173.0 Low 06:26:49 - 06:56:49 988
Paisley 06:42:41 -21.6 Dark Down 21.0 158.5 Low 06:27:41 - 06:57:41 976
Lakeview 06:42:41 -22.1 Dark Down 21.5 158.6 Low 06:27:41 - 06:57:41 954
Klamath Falls 06:42:45 -21.7 Dark Down 21.1 157.3 Low 06:27:45 - 06:57:45 937
Cedarville 06:42:41 -22.8 Dark Down 22.2 158.7 Low 06:27:41 - 06:57:41 924
Fall River/Burney 06:42:45 -22.9 Dark Down 22.3 157.5 Low 06:27:45 - 06:57:45 883
Susanville 06:42:44 -23.7 Dark Down 23.1 158.1 Low 06:27:44 - 06:57:44 861
Gimple 06:42:45 -23.9 Dark Down 23.3 157.9 Low 06:27:45 - 06:57:45 844
Greenville 06:42:45 -23.9 Dark Down 23.2 157.8 Low 06:27:45 - 06:57:45 843
Portola 06:42:44 -24.3 Dark Down 23.7 158.2 Low 06:27:44 - 06:57:44 833
Quincy 06:42:45 -24.1 Dark Down 23.4 157.8 Low 06:27:45 - 06:57:45 832
Reno 06:42:42 -24.7 Dark Down 24.1 158.8 Low 06:27:42 - 06:57:42 827
Carson City 06:42:42 -25.1 Dark Down 24.4 158.7 Low 06:27:42 - 06:57:42 808
Yerington 06:42:40 -25.4 Dark Down 24.8 159.3 Low 06:27:40 - 06:57:40 806
Gardnerville 06:42:42 -25.3 Dark Down 24.7 158.7 Low 06:27:42 - 06:57:42 796
Hawthorne 06:42:39 -26.0 Dark Down 25.4 159.7 Low 06:27:39 - 06:57:39 788
Tonopah 06:42:35 -26.8 Dark Down 26.2 161.0 Low 06:27:35 - 06:57:35 781
Lee Vining 06:42:41 -26.4 Dark Down 25.8 159.2 Low 06:27:41 - 06:57:41 751
Bishop 06:42:39 -27.1 Dark Down 26.5 159.8 Low 06:27:39 - 06:57:39 727
Beatty 06:42:34 -28.0 Dark Down 27.4 161.3 Low 06:27:34 - 06:57:34 721
Indian Springs 06:42:30 -28.5 Dark Down 28.0 162.3 Low 06:27:30 - 06:57:30 715
Henderson 06:42:28 -29.2 Dark Down 28.7 162.9 Low 06:27:28 - 06:57:28 692
Patrick 06:42:25 -30.0 Dark Down 29.5 163.9 Low 06:27:25 - 06:57:25 668
Searchlight/Boulder City 06:42:29 -29.8 Dark Down 29.2 162.9 Low 06:27:29 - 06:57:29 660
DCO 06:42:23 -30.5 Dark Down 30.0 164.6 Low 06:27:23 - 06:57:23 658
Kingman/Dolan Springs 06:42:26 -30.2 Dark Down 29.7 163.7 Low 06:27:26 - 06:57:26 653
Laughlin/Bullhead City 06:42:28 -30.1 Dark Down 29.6 163.2 Low 06:27:28 - 06:57:28 645
Mohave Valley 06:42:28 -30.4 Dark Down 29.8 163.1 Low 06:27:28 - 06:57:28 629
Lake Havasu City 06:42:27 -30.8 Dark Down 30.3 163.3 Up 06:27:27 - 06:57:27 608
Parker 06:42:27 -31.2 Dark Down 30.6 163.3 Up 06:27:27 - 06:57:27 587
George/Scottsdale 06:42:19 -32.0 Dark Down 31.6 165.7 Up 06:27:19 - 06:57:19 586
CPSLO 06:42:49 -28.5 Dark Down 27.8 157.2 Low 06:27:49 - 06:57:49 575
Blythe 06:42:29 -31.6 Dark Down 31.1 162.9 Up 06:27:29 - 06:57:29 551
Idyllwild 06:42:36 -31.0 Dark Down 30.4 160.8 Up 06:27:36 - 06:57:36 535
Wildwood 06:42:43 -30.2 Dark Down 29.5 158.9 Low 06:27:43 - 06:57:43 531
Calipatria 06:42:33 -31.9 Dark Down 31.3 161.8 Up 06:27:33 - 06:57:33 510
Yuma 06:42:29 -32.5 Dark Down 31.9 162.7 Up 06:27:29 - 06:57:29 493

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, (2020/06/13 06:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 15.42 103
35Eta Oph      17:10:22.7 -15:43:29  2.6  9.72  95
51 Oph         17:31:25.0 -23:57:46  4.8  1.24  89
PPM 267094     17:38:03.8 -22:34:55  8.4  0.88  88
PPM 267042     17:35:31.9 -23:32:47  9.5  0.25  88
13KY18         17:36:04.2 -23:19:45 15.4        88
Positions are for J2000

Event circumstances last updated at 2019/10/16 21:12:25 UT

Marc W. Buie, Southwest Research Institute

RECON