RECON: TNO occultation with 13KZ18

Event between 13KZ18 and star GA1200:15815469 with event index number of 2067656

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 23:30:12.6 +30:39:59
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 38 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=21.8

[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=8.8
Diameter=97.7 km assuming a 5% albedo -- 5.1 sec chord
Diameter=39.9 km assuming a 30% albedo -- 2.1 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         23:04:50.1 +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 26.7 km RECON observability=1.0 and success probability=14.6%
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 07:32:53 -50.2 Dark Up 59.8 240.8 Up 07:22:36 - 07:43:10 4241
Kelowna 07:32:54 -50.5 Dark Up 60.1 241.2 Up 07:22:37 - 07:43:11 4203
Peachland 07:32:55 -50.6 Dark Up 60.3 241.0 Up 07:22:38 - 07:43:12 4197
Summerland 07:32:55 -50.8 Dark Up 60.4 241.4 Up 07:22:38 - 07:43:12 4179
Penticton 07:32:54 -50.9 Dark Up 60.3 241.6 Up 07:22:37 - 07:43:11 4170
Victoria 07:33:08 -51.6 Dark Up 63.0 238.0 Up 07:22:51 - 07:43:25 4148
Oliver 07:32:54 -51.2 Dark Up 60.5 242.1 Up 07:22:37 - 07:43:11 4133
Anarchist Mountain Observatory 07:32:54 -51.4 Dark Up 60.5 242.7 Up 07:22:37 - 07:43:11 4110
Tonasket 07:32:55 -51.7 Dark Up 60.6 243.1 Up 07:22:38 - 07:43:12 4079
Okanogan 07:32:56 -52.0 Dark Up 60.9 243.4 Up 07:22:39 - 07:43:13 4047
Brewster 07:32:57 -52.3 Dark Up 61.1 243.6 Up 07:22:40 - 07:43:14 4022
Manson/Chelan 07:32:58 -52.5 Dark Up 61.4 243.5 Up 07:22:41 - 07:43:15 4008
Wenatchee 07:32:59 -52.9 Dark Up 61.7 244.0 Up 07:22:42 - 07:43:16 3961
Ellensburg 07:33:00 -53.3 Dark Up 62.1 244.5 Up 07:22:43 - 07:43:17 3922
Yakima 07:33:01 -53.7 Dark Up 62.2 245.1 Up 07:22:44 - 07:43:18 3879
Toppenish/White Swan 07:33:01 -54.0 Dark Up 62.2 245.7 Up 07:22:44 - 07:43:18 3853
Pasco 07:32:57 -54.2 Dark Up 61.5 247.5 Up 07:22:40 - 07:43:14 3812
Goldendale 07:33:02 -54.5 Dark Up 62.7 246.2 Up 07:22:45 - 07:43:19 3804
The Dalles 07:33:04 -54.7 Dark Up 63.0 246.1 Up 07:22:47 - 07:43:21 3788
PNWRO 07:32:57 -54.4 Dark Up 61.4 248.2 Up 07:22:40 - 07:43:14 3781
Maupin 07:33:04 -55.1 Dark Up 63.1 247.0 Up 07:22:47 - 07:43:21 3741
Sisters 07:33:07 -55.9 Dark Up 63.8 248.0 Up 07:22:50 - 07:43:24 3660
Redmond 07:33:06 -56.0 Dark Up 63.5 248.6 Up 07:22:49 - 07:43:23 3648
Bend 07:33:07 -56.2 Dark Up 63.7 248.8 Up 07:22:50 - 07:43:24 3628
Oregon Observatory 07:33:07 -56.4 Dark Up 63.8 249.0 Up 07:22:50 - 07:43:24 3613
La Pine/Gilchrist 07:33:08 -56.5 Dark Up 64.0 249.3 Up 07:22:51 - 07:43:25 3593
North Lake 07:33:07 -57.0 Dark Up 63.7 250.8 Up 07:22:50 - 07:43:24 3532
Chiloquin 07:33:10 -57.6 Dark Up 64.6 251.0 Up 07:22:53 - 07:43:27 3484
Paisley 07:33:06 -57.6 Dark Up 63.6 252.3 Up 07:22:49 - 07:43:23 3465
Klamath Falls 07:33:11 -58.0 Dark Up 64.6 251.8 Up 07:22:54 - 07:43:28 3446
Lakeview 07:33:06 -58.1 Dark Up 63.6 253.5 Up 07:22:49 - 07:43:23 3406
Cedarville 07:33:06 -58.8 Dark Up 63.7 255.0 Up 07:22:49 - 07:43:23 3332
Fall River/Burney 07:33:11 -59.2 Dark Up 64.7 254.6 Up 07:22:54 - 07:43:28 3311
Susanville 07:33:09 -59.9 Dark Up 64.3 256.7 Up 07:22:52 - 07:43:26 3226
Greenville 07:33:11 -60.1 Dark Up 64.6 257.0 Up 07:22:54 - 07:43:28 3204
Gimple 07:33:11 -60.1 Dark Up 64.5 257.1 Up 07:22:54 - 07:43:28 3201
Quincy 07:33:11 -60.3 Dark Up 64.6 257.4 Up 07:22:54 - 07:43:28 3182
Portola 07:33:09 -60.5 Dark Up 64.3 258.1 Up 07:22:52 - 07:43:26 3157
Reno 07:33:08 -60.8 Dark Up 63.9 259.3 Up 07:22:51 - 07:43:25 3113
Carson City 07:33:09 -61.2 Dark Up 63.9 260.0 Up 07:22:52 - 07:43:26 3074
Gardnerville 07:33:08 -61.4 Dark Up 63.9 260.5 Up 07:22:51 - 07:43:25 3047
Yerington 07:33:06 -61.4 Dark Up 63.5 260.9 Up 07:22:49 - 07:43:23 3038
Hawthorne 07:33:05 -61.9 Dark Up 63.1 262.3 Up 07:22:48 - 07:43:22 2976
Dunrhomin 07:32:17 -58.4 Dark Up 52.8 269.2 Up 07:22:00 - 07:42:34 2939
Lee Vining 07:33:08 -62.4 Dark Up 63.6 263.0 Up 07:22:51 - 07:43:25 2927
Tonopah 07:33:01 -62.4 Dark Up 62.1 264.3 Up 07:22:44 - 07:43:18 2893
Bishop 07:33:06 -63.1 Dark Up 63.1 264.8 Up 07:22:49 - 07:43:23 2846
Beatty 07:33:01 -63.5 Dark Up 61.8 266.8 Up 07:22:44 - 07:43:18 2759
Indian Springs 07:32:57 -63.8 Dark Up 61.0 268.1 Up 07:22:40 - 07:43:14 2701
CPSLO 07:33:17 -64.9 Dark Up 65.0 267.4 Up 07:23:00 - 07:43:34 2685
Henderson 07:32:56 -64.3 Dark Up 60.4 269.5 Up 07:22:39 - 07:43:13 2629
Patrick 07:32:52 -64.9 Dark Up 59.5 271.2 Up 07:22:35 - 07:43:09 2540
Laughlin/Bullhead City 07:32:55 -65.2 Dark Up 60.1 271.3 Up 07:22:38 - 07:43:12 2528
Kingman/Dolan Springs 07:32:53 -65.1 Dark Up 59.7 271.5 Up 07:22:36 - 07:43:10 2519
Wildwood 07:33:12 -66.3 Dark Up 63.3 271.1 Up 07:22:55 - 07:43:29 2504
Mohave Valley 07:32:55 -65.5 Dark Up 60.1 271.7 Up 07:22:38 - 07:43:12 2498
Lake Havasu City 07:32:55 -65.8 Dark Up 59.9 272.6 Up 07:22:38 - 07:43:12 2450
Idyllwild 07:33:05 -66.7 Dark Up 61.8 272.8 Up 07:22:48 - 07:43:22 2421
Parker 07:32:55 -66.2 Dark Up 59.8 273.2 Up 07:22:38 - 07:43:12 2412
Blythe 07:32:57 -66.7 Dark Up 60.0 273.9 Up 07:22:40 - 07:43:14 2363
Calipatria 07:33:02 -67.3 Dark Up 60.8 274.4 Up 07:22:45 - 07:43:19 2330
George/Scottsdale 07:32:47 -66.3 Dark Up 57.8 275.0 Up 07:22:30 - 07:43:04 2320
Yuma 07:32:59 -67.6 Dark Up 60.0 275.5 Up 07:22:42 - 07:43:16 2265

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         23:03:46.8 +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 2021/10/04 01:47:50 UT

Marc W. Buie, Southwest Research Institute

RECON