RECON: TNO occultation with 13KZ18

Event between 13KZ18 and star GA1200:15815469 with event index number of 1167933

Geocentric closest approach at 2021/10/20 07:35:21 UTC

J2000 position of star is 23:29:08.0 +30:32:46
Equinox of date position of star is 23:30:05.7 +30:39:12
Stellar brightness G=14.9, use SENSEUP=128
Star is 38 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=21.9

[RECON map]
TNO is 19.7 AU from the Sun and 18.9 AU from the Earth.
The TNO is moving 20.6 km/sec on the sky relative to the star, or, 5.4 arcsec/hr.
The 1-sigma error in the time of the event is 117 seconds.
The 1-sigma cross-track error in the shadow position is 2481 km.
The sky-plane scale is 13676.9 km/arcsec.

The TNO has an absolute magnitude Hv=8.9
Diameter=97.7 km assuming a 5% albedo -- 4.7 sec chord
Diameter=39.9 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 13KZ18, (2021/10/20 07:35UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:10.6 +45:21:33  1.3 35.71  73
Scheat         23:04:50.0 +28:12:05  2.4  6.05  41
72 Peg         23:35:02.4 +31:26:45  6.3  1.29  37
PPM 088866     23:30:33.6 +30:33:10  8.4  0.14  38
13KZ18         23:30:12.8 +30:39:59 14.9        38
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 24.6 km RECON observability=1.0 and success probability=14.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:32:53 -50.5 Dark Up 60.1 241.3 Up 07:22:36 - 07:43:10 4201
Summerland 07:32:55 -50.8 Dark Up 60.4 241.4 Up 07:22:38 - 07:43:12 4176
Penticton 07:32:54 -50.9 Dark Up 60.3 241.6 Up 07:22:37 - 07:43:11 4166
Okanagan Falls 07:32:55 -51.0 Dark Up 60.4 241.9 Up 07:22:38 - 07:43:12 4147
Oliver 07:32:54 -51.2 Dark Up 60.5 242.1 Up 07:22:37 - 07:43:11 4129
Anarchist Mountain Observatory 07:32:54 -51.4 Dark Up 60.5 242.7 Up 07:22:37 - 07:43:11 4107
Oroville 07:32:54 -51.5 Dark Up 60.5 242.7 Up 07:22:37 - 07:43:11 4100
Tonasket 07:32:54 -51.7 Dark Up 60.6 243.1 Up 07:22:37 - 07:43:11 4076
Okanogan 07:32:55 -52.0 Dark Up 60.9 243.4 Up 07:22:38 - 07:43:12 4043
Brewster 07:32:57 -52.3 Dark Up 61.1 243.6 Up 07:22:40 - 07:43:14 4019
Manson/Chelan 07:32:58 -52.5 Dark Up 61.4 243.5 Up 07:22:41 - 07:43:15 4004
Entiat 07:32:59 -52.7 Dark Up 61.6 243.7 Up 07:22:42 - 07:43:16 3982
Wenatchee 07:32:59 -52.9 Dark Up 61.7 244.0 Up 07:22:42 - 07:43:16 3958
Ellensburg 07:33:00 -53.3 Dark Up 62.1 244.5 Up 07:22:43 - 07:43:17 3919
Yakima 07:33:01 -53.7 Dark Up 62.2 245.1 Up 07:22:44 - 07:43:18 3876
Toppenish/White Swan 07:33:00 -54.0 Dark Up 62.2 245.7 Up 07:22:43 - 07:43:17 3849
Pasco 07:32:57 -54.2 Dark Up 61.5 247.5 Up 07:22:40 - 07:43:14 3809
Goldendale 07:33:02 -54.5 Dark Up 62.7 246.2 Up 07:22:45 - 07:43:19 3800
The Dalles 07:33:04 -54.7 Dark Up 63.0 246.1 Up 07:22:47 - 07:43:21 3785
George/Umatilla 07:32:58 -54.5 Dark Up 61.7 247.8 Up 07:22:41 - 07:43:15 3778
PNWRO 07:32:57 -54.4 Dark Up 61.4 248.2 Up 07:22:40 - 07:43:14 3777
Maupin 07:33:04 -55.1 Dark Up 63.1 247.0 Up 07:22:47 - 07:43:21 3738
Madras/Culver 07:33:05 -55.6 Dark Up 63.4 248.0 Up 07:22:48 - 07:43:22 3681
Sisters 07:33:07 -55.9 Dark Up 63.8 248.0 Up 07:22:50 - 07:43:24 3656
Redmond 07:33:06 -56.0 Dark Up 63.5 248.6 Up 07:22:49 - 07:43:23 3644
Bend 07:33:08 -56.2 Dark Up 63.7 248.8 Up 07:22:51 - 07:43:25 3625
Oregon Observatory 07:33:07 -56.4 Dark Up 63.8 249.0 Up 07:22:50 - 07:43:24 3610
La Pine/Gilchrist 07:33:08 -56.5 Dark Up 64.0 249.3 Up 07:22:51 - 07:43:25 3589
North Lake 07:33:06 -57.0 Dark Up 63.7 250.8 Up 07:22:49 - 07:43:23 3529
Chiloquin 07:33:10 -57.6 Dark Up 64.6 251.0 Up 07:22:53 - 07:43:27 3481
Paisley 07:33:06 -57.6 Dark Up 63.6 252.3 Up 07:22:49 - 07:43:23 3462
Klamath Falls 07:33:11 -58.0 Dark Up 64.6 251.8 Up 07:22:54 - 07:43:28 3442
Tulelake 07:33:11 -58.3 Dark Up 64.5 252.7 Up 07:22:54 - 07:43:28 3406
Lakeview 07:33:06 -58.1 Dark Up 63.6 253.5 Up 07:22:49 - 07:43:23 3403
Cedarville 07:33:06 -58.8 Dark Up 63.7 255.0 Up 07:22:49 - 07:43:23 3329
Fall River/Burney 07:33:12 -59.2 Dark Up 64.7 254.6 Up 07:22:55 - 07:43:29 3308
Susanville 07:33:09 -59.9 Dark Up 64.3 256.7 Up 07:22:52 - 07:43:26 3222
Greenville 07:33:11 -60.1 Dark Up 64.6 257.0 Up 07:22:54 - 07:43:28 3201
Gimple 07:33:10 -60.1 Dark Up 64.5 257.1 Up 07:22:53 - 07:43:27 3198
Quincy 07:33:11 -60.3 Dark Up 64.6 257.4 Up 07:22:54 - 07:43:28 3179
Portola 07:33:10 -60.5 Dark Up 64.3 258.1 Up 07:22:53 - 07:43:27 3154
Reno 07:33:08 -60.8 Dark Up 63.9 259.3 Up 07:22:51 - 07:43:25 3109
Carson City 07:33:08 -61.2 Dark Up 63.9 260.0 Up 07:22:51 - 07:43:25 3071
Gardnerville 07:33:08 -61.4 Dark Up 63.9 260.5 Up 07:22:51 - 07:43:25 3044
Yerington 07:33:07 -61.4 Dark Up 63.5 260.9 Up 07:22:50 - 07:43:24 3035
Hawthorne 07:33:05 -61.9 Dark Up 63.1 262.3 Up 07:22:48 - 07:43:22 2972
Lee Vining 07:33:08 -62.4 Dark Up 63.6 263.0 Up 07:22:51 - 07:43:25 2924
Niwot 07:32:17 -58.6 Dark Up 52.8 269.4 Up 07:22:00 - 07:42:34 2920
SwRI 07:32:18 -58.7 Dark Up 52.9 269.5 Up 07:22:01 - 07:42:35 2909
Tonopah 07:33:01 -62.4 Dark Up 62.1 264.3 Up 07:22:44 - 07:43:18 2890
Bishop 07:33:07 -63.1 Dark Up 63.1 264.8 Up 07:22:50 - 07:43:24 2843
Beatty 07:33:00 -63.5 Dark Up 61.8 266.8 Up 07:22:43 - 07:43:17 2756
Lone Pine 07:33:06 -63.8 Dark Up 62.9 266.5 Up 07:22:49 - 07:43:23 2754
Indian Springs 07:32:57 -63.8 Dark Up 61.0 268.1 Up 07:22:40 - 07:43:14 2698
CPSLO 07:33:17 -64.9 Dark Up 65.0 267.4 Up 07:23:00 - 07:43:34 2682
Henderson 07:32:55 -64.3 Dark Up 60.4 269.5 Up 07:22:38 - 07:43:12 2626
Searchlight/Boulder City 07:32:57 -64.9 Dark Up 60.4 270.5 Up 07:22:40 - 07:43:14 2563
Patrick 07:32:52 -64.9 Dark Up 59.5 271.2 Up 07:22:35 - 07:43:09 2536
Laughlin/Bullhead City 07:32:55 -65.2 Dark Up 60.1 271.3 Up 07:22:38 - 07:43:12 2524
Kingman/Dolan Springs 07:32:53 -65.1 Dark Up 59.7 271.5 Up 07:22:36 - 07:43:10 2516
Wildwood 07:33:12 -66.3 Dark Up 63.3 271.1 Up 07:22:55 - 07:43:29 2501
Mohave Valley 07:32:56 -65.4 Dark Up 60.1 271.7 Up 07:22:39 - 07:43:13 2495
DCO 07:32:50 -65.1 Dark Up 59.0 272.1 Up 07:22:33 - 07:43:07 2490
Lake Havasu City 07:32:55 -65.8 Dark Up 59.9 272.6 Up 07:22:38 - 07:43:12 2447
Idyllwild 07:33:05 -66.7 Dark Up 61.8 272.8 Up 07:22:48 - 07:43:22 2418
Parker 07:32:56 -66.2 Dark Up 59.8 273.2 Up 07:22:39 - 07:43:13 2409
Blythe 07:32:57 -66.7 Dark Up 60.0 273.9 Up 07:22:40 - 07:43:14 2359
Calipatria 07:33:01 -67.3 Dark Up 60.8 274.4 Up 07:22:44 - 07:43:18 2327
Yuma 07:32:59 -67.6 Dark Up 60.0 275.5 Up 07:22:42 - 07:43:16 2262

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 13KZ18, (2021/10/20 07:35UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 35.71  73
Scheat         23:03:46.7 +28:05:01  2.4  6.05  41
72 Peg         23:33:57.3 +31:19:31  6.3  1.29  37
PPM 088866     23:29:28.8 +30:25:57  8.4  0.14  38
13KZ18         23:29:08.0 +30:32:46 14.9        38
Positions are for J2000

Event circumstances last updated at 2019/06/08 02:32:01 UT

Marc W. Buie, Southwest Research Institute

RECON