RECON: TNO occultation with 13TS187

Event between 13TS187 and star GA0920:00105179 with event index number of 2465570

Geocentric closest approach at 2021/12/03 02:32:48 UTC

J2000 position of star is 01:10:59.6 +02:44:35
Equinox of date position of star is 01:12:06.8 +02:51:29
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 143 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=24.1

[RECON map]
TNO is 32.7 AU from the Sun and 32.1 AU from the Earth.
The TNO is moving 12.5 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 381 seconds.
The 1-sigma cross-track error in the shadow position is 2120 km.
The sky-plane scale is 23292.5 km/arcsec.

The TNO has an absolute magnitude Hv=8.8
Diameter=103.8 km assuming a 5% albedo -- 8.2 sec chord
Diameter=42.4 km assuming a 30% albedo -- 3.3 sec chord
Dynamical classification is 5:4E
 
 
 
 
 
 

Star training set for 13TS187, (2021/12/03 02:32UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:51.4 -29:30:20  1.2 45.43 100
68Omi Cet      02:20:27.3 -02:52:45  2.0 18.01 153
89 Psc         01:18:55.9 +03:43:45  5.2  1.91 145
33 Cet         01:11:41.4 +02:33:41  7.4  0.32 143
PPM 144332     01:11:35.6 +02:40:16  9.0  0.23 143
13TS187        01:12:07.5 +02:51:33 16.1       144
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 2.4 sigma about the mid-time.
The median site spacing is 19.5 km RECON observability=1.0 and success probability=12.8%
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 02:33:37 -24.2 Dark Down 37.5 145.8 Up 02:18:37 - 02:48:37 -1942
Kelowna 02:33:40 -24.0 Dark Down 37.7 145.5 Up 02:18:40 - 02:48:40 -1964
Peachland 02:33:42 -23.8 Dark Down 37.7 145.1 Up 02:18:42 - 02:48:42 -1965
Summerland 02:33:42 -23.9 Dark Down 37.9 145.1 Up 02:18:42 - 02:48:42 -1977
Victoria 02:34:05 -21.3 Dark Down 37.3 140.4 Up 02:19:05 - 02:49:05 -1982
Penticton 02:33:42 -23.9 Dark Down 38.0 145.3 Up 02:18:42 - 02:48:42 -1983
Oliver 02:33:43 -23.9 Dark Down 38.3 145.1 Up 02:18:43 - 02:48:43 -2006
Anarchist Mountain Observatory 02:33:43 -24.0 Dark Down 38.5 145.2 Up 02:18:43 - 02:48:43 -2020
Tonasket 02:33:45 -23.9 Dark Down 38.7 145.0 Up 02:18:45 - 02:48:45 -2039
Okanogan 02:33:47 -23.8 Dark Down 38.9 144.7 Up 02:18:47 - 02:48:47 -2059
Brewster 02:33:49 -23.6 Dark Down 39.1 144.4 Up 02:18:49 - 02:48:49 -2073
Manson/Chelan 02:33:52 -23.4 Dark Down 39.1 143.8 Up 02:18:52 - 02:48:52 -2080
Wenatchee 02:33:55 -23.2 Dark Down 39.4 143.4 Up 02:18:55 - 02:48:55 -2109
Ellensburg 02:33:58 -23.0 Dark Down 39.7 143.0 Up 02:18:58 - 02:48:58 -2133
Yakima 02:33:59 -22.9 Dark Down 40.0 142.7 Up 02:18:59 - 02:48:59 -2160
Toppenish/White Swan 02:33:59 -23.0 Dark Down 40.2 142.8 Up 02:18:59 - 02:48:59 -2178
Goldendale 02:34:04 -22.6 Dark Down 40.5 142.1 Up 02:19:04 - 02:49:04 -2209
Pasco 02:33:54 -23.8 Dark Down 40.8 144.3 Up 02:18:54 - 02:48:54 -2210
The Dalles 02:34:07 -22.4 Dark Down 40.5 141.5 Up 02:19:07 - 02:49:07 -2218
PNWRO 02:33:53 -24.0 Dark Down 41.1 144.4 Up 02:18:53 - 02:48:53 -2231
Maupin 02:34:08 -22.4 Dark Down 40.9 141.4 Up 02:19:08 - 02:49:08 -2249
Sisters 02:34:15 -21.9 Dark Down 41.4 140.4 Up 02:19:15 - 02:49:15 -2301
Redmond 02:34:13 -22.2 Dark Down 41.6 140.9 Up 02:19:13 - 02:49:13 -2311
Bend 02:34:14 -22.0 Dark Down 41.7 140.6 Up 02:19:14 - 02:49:14 -2323
Oregon Observatory 02:34:16 -21.9 Dark Down 41.8 140.3 Up 02:19:16 - 02:49:16 -2333
La Pine/Gilchrist 02:34:17 -21.8 Dark Down 41.9 140.1 Up 02:19:17 - 02:49:17 -2347
North Lake 02:34:16 -22.2 Dark Down 42.5 140.6 Up 02:19:16 - 02:49:16 -2390
Chiloquin 02:34:24 -21.4 Dark Down 42.6 139.1 Up 02:19:24 - 02:49:24 -2421
Paisley 02:34:16 -22.4 Dark Down 43.1 140.7 Up 02:19:16 - 02:49:16 -2437
Klamath Falls 02:34:25 -21.4 Dark Down 42.9 139.0 Up 02:19:25 - 02:49:25 -2448
Lakeview 02:34:17 -22.4 Dark Down 43.6 140.7 Up 02:19:17 - 02:49:17 -2479
Cedarville 02:34:19 -22.4 Dark Down 44.2 140.5 Up 02:19:19 - 02:49:19 -2531
Fall River/Burney 02:34:28 -21.5 Dark Down 44.0 138.7 Up 02:19:28 - 02:49:28 -2544
Susanville 02:34:26 -21.9 Dark Down 44.8 139.2 Up 02:19:26 - 02:49:26 -2607
Greenville 02:34:29 -21.6 Dark Down 44.9 138.7 Up 02:19:29 - 02:49:29 -2622
Gimple 02:34:29 -21.7 Dark Down 44.9 138.8 Up 02:19:29 - 02:49:29 -2624
Quincy 02:34:30 -21.6 Dark Down 45.0 138.6 Up 02:19:30 - 02:49:30 -2638
Portola 02:34:28 -21.9 Dark Down 45.4 139.1 Up 02:19:28 - 02:49:28 -2657
Reno 02:34:25 -22.4 Dark Down 45.9 139.7 Up 02:19:25 - 02:49:25 -2691
Carson City 02:34:26 -22.3 Dark Down 46.2 139.5 Up 02:19:26 - 02:49:26 -2720
Gardnerville 02:34:27 -22.3 Dark Down 46.4 139.4 Up 02:19:27 - 02:49:27 -2740
Yerington 02:34:24 -22.8 Dark Down 46.6 140.1 Up 02:19:24 - 02:49:24 -2748
Hawthorne 02:34:22 -23.1 Dark Down 47.3 140.5 Up 02:19:22 - 02:49:22 -2796
Lee Vining 02:34:27 -22.6 Dark Down 47.4 139.5 Up 02:19:27 - 02:49:27 -2831
Tonopah 02:34:15 -24.1 Dark Down 48.3 141.9 Up 02:19:15 - 02:49:15 -2863
Bishop 02:34:26 -23.0 Dark Down 48.3 140.0 Up 02:19:26 - 02:49:26 -2895
Dunrhomin 02:32:55 -33.3 Dark Down 50.8 159.9 Up 02:17:55 - 02:47:55 -2938
Beatty 02:34:17 -24.2 Dark Down 49.4 141.7 Up 02:19:17 - 02:49:17 -2968
CPSLO 02:34:47 -20.9 Dark Down 48.6 135.6 Up 02:19:47 - 02:49:47 -3017
Indian Springs 02:34:12 -25.0 Dark Down 50.2 142.9 Up 02:19:12 - 02:49:12 -3018
Henderson 02:34:09 -25.4 Dark Down 51.0 143.5 Up 02:19:09 - 02:49:09 -3078
Patrick 02:34:05 -26.2 Dark Down 52.0 144.6 Up 02:19:05 - 02:49:05 -3155
Laughlin/Bullhead City 02:34:10 -25.6 Dark Down 51.9 143.4 Up 02:19:10 - 02:49:10 -3161
Wildwood 02:34:39 -22.3 Dark Down 50.6 137.2 Up 02:19:39 - 02:49:39 -3164
Kingman/Dolan Springs 02:34:06 -26.0 Dark Down 52.1 144.1 Up 02:19:06 - 02:49:06 -3170
Mohave Valley 02:34:11 -25.6 Dark Down 52.1 143.2 Up 02:19:11 - 02:49:11 -3184
Lake Havasu City 02:34:10 -25.7 Dark Down 52.5 143.2 Up 02:19:10 - 02:49:10 -3224
Idyllwild 02:34:29 -23.7 Dark Down 51.9 139.4 Up 02:19:29 - 02:49:29 -3235
Parker 02:34:12 -25.7 Dark Down 52.8 143.0 Up 02:19:12 - 02:49:12 -3255
Blythe 02:34:15 -25.4 Dark Down 53.1 142.2 Up 02:19:15 - 02:49:15 -3294
Calipatria 02:34:23 -24.5 Dark Down 53.0 140.5 Up 02:19:23 - 02:49:23 -3316
George/Scottsdale 02:33:57 -27.6 Dark Down 54.3 146.2 Up 02:18:57 - 02:48:57 -3346
Yuma 02:34:19 -25.2 Dark Down 53.8 141.4 Up 02:19:19 - 02:49:19 -3374

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 13TS187, (2021/12/03 02:32UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 45.43 100
68Omi Cet      02:19:20.8 -02:58:45  2.0 18.01 153
89 Psc         01:17:47.9 +03:36:51  5.2  1.91 145
33 Cet         01:10:33.6 +02:26:43  7.4  0.32 143
PPM 144332     01:10:27.8 +02:33:18  9.0  0.23 143
13TS187        01:10:59.6 +02:44:35 16.1       143
Positions are for J2000

Event circumstances last updated at 2021/09/16 01:04:32 UT

Marc W. Buie, Southwest Research Institute

RECON