RECON: TNO occultation with 05TV189

Event between 05TV189 and star GA0900:01538875 with event index number of 1958066

Geocentric closest approach at 2023/02/08 03:58:59 UTC

J2000 position of star is 06:34:09.1 +01:39:15
Equinox of date position of star is 06:35:19.9 +01:38:06
Stellar brightness G=14.1, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 70 degrees from the moon. Moon is 95% illuminated.
TNO apparent brightness V=22.9

[RECON map]
TNO is 32.9 AU from the Sun and 32.2 AU from the Earth.
The TNO is moving 19.0 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 355 seconds.
The 1-sigma cross-track error in the shadow position is 5185 km.
The sky-plane scale is 23320.5 km/arcsec.

The TNO has an absolute magnitude Hv=7.6
Diameter=178.7 km assuming a 5% albedo -- 9.4 sec chord
Diameter=72.9 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 05TV189, (2023/02/08 03:59UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:25.4 +07:24:34  0.4 11.29  78
Alhena         06:39:02.8 +16:22:39  1.9 14.77  67
PPM 150810     06:36:27.3 +00:52:13  5.7  0.81  69
PPM 150790     06:35:51.7 +01:42:29  7.5  0.15  69
PPM 150765     06:35:18.1 +01:37:17  8.6  0.02  70
05TV189        06:35:21.0 +01:38:05 14.1        69
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 2.5 sigma about the mid-time.
The median site spacing is 25.3 km RECON observability=1.0 and success probability=9.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:00:36 -36.3 Dark Up 39.3 171.9 Up 03:45:36 - 04:15:36 -1294
Kamloops 04:01:24 -28.3 Dark Up 38.0 153.6 Up 03:46:24 - 04:16:24 -1673
Kelowna 04:01:22 -29.0 Dark Up 39.0 154.4 Up 03:46:22 - 04:16:22 -1721
Peachland 04:01:23 -28.9 Dark Up 39.0 154.0 Up 03:46:23 - 04:16:23 -1735
Summerland 04:01:22 -28.9 Dark Up 39.1 154.0 Up 03:46:22 - 04:16:22 -1745
Penticton 04:01:22 -29.0 Dark Up 39.2 154.2 Up 03:46:22 - 04:16:22 -1748
Oliver 04:01:22 -29.1 Dark Up 39.6 154.0 Up 03:46:22 - 04:16:22 -1777
Anarchist Mountain Observatory 04:01:22 -29.2 Dark Up 39.8 154.2 Up 03:46:22 - 04:16:22 -1786
Tonasket 04:01:22 -29.3 Dark Up 40.0 154.0 Up 03:46:22 - 04:16:22 -1813
Okanogan 04:01:23 -29.2 Dark Up 40.3 153.7 Up 03:46:23 - 04:16:23 -1843
Brewster 04:01:23 -29.1 Dark Up 40.5 153.3 Up 03:46:23 - 04:16:23 -1869
Manson/Chelan 04:01:25 -28.9 Dark Up 40.5 152.8 Up 03:46:25 - 04:16:25 -1893
Victoria 04:01:36 -26.7 Dark Up 38.9 149.1 Up 03:46:36 - 04:16:36 -1903
Wenatchee 04:01:25 -28.9 Dark Up 40.9 152.4 Up 03:46:25 - 04:16:25 -1935
Ellensburg 04:01:26 -28.8 Dark Up 41.2 152.0 Up 03:46:26 - 04:16:26 -1974
Yakima 04:01:27 -28.9 Dark Up 41.6 151.8 Up 03:46:27 - 04:16:27 -2008
Toppenish/White Swan 04:01:26 -29.0 Dark Up 41.8 151.9 Up 03:46:26 - 04:16:26 -2023
PNWRO 04:01:21 -30.1 Dark Up 42.6 153.6 Up 03:46:21 - 04:16:21 -2023
Goldendale 04:01:28 -28.8 Dark Up 42.2 151.1 Up 03:46:28 - 04:16:28 -2078
The Dalles 04:01:29 -28.6 Dark Up 42.2 150.6 Up 03:46:29 - 04:16:29 -2104
Maupin 04:01:29 -28.7 Dark Up 42.6 150.5 Up 03:46:29 - 04:16:29 -2138
Dunrhomin 04:00:24 -41.0 Dark Up 51.1 171.1 Up 03:45:24 - 04:15:24 -2203
Sisters 04:01:31 -28.5 Dark Up 43.2 149.5 Up 03:46:31 - 04:16:31 -2223
CU-SBO 04:00:24 -41.0 Dark Up 51.3 170.9 Up 03:45:24 - 04:15:24 -2227
Bend 04:01:30 -28.7 Dark Up 43.5 149.7 Up 03:46:30 - 04:16:30 -2238
Oregon Observatory 04:01:30 -28.6 Dark Up 43.6 149.5 Up 03:46:30 - 04:16:30 -2256
North Lake 04:01:29 -29.1 Dark Up 44.4 149.8 Up 03:46:29 - 04:16:29 -2300
Chiloquin 04:01:32 -28.5 Dark Up 44.6 148.3 Up 03:46:32 - 04:16:32 -2380
Lakeview 04:01:27 -29.6 Dark Up 45.5 150.0 Up 03:46:27 - 04:16:27 -2382
Klamath Falls 04:01:32 -28.6 Dark Up 44.9 148.2 Up 03:46:32 - 04:16:32 -2409
Cedarville 04:01:26 -29.8 Dark Up 46.1 149.9 Up 03:46:26 - 04:16:26 -2436
Fall River/Burney 04:01:31 -28.9 Dark Up 46.1 148.1 Up 03:46:31 - 04:16:31 -2506
Susanville 04:01:28 -29.6 Dark Up 46.9 148.7 Up 03:46:28 - 04:16:28 -2546
Gimple 04:01:29 -29.4 Dark Up 47.0 148.2 Up 03:46:29 - 04:16:29 -2576
Greenville 04:01:29 -29.4 Dark Up 47.0 148.1 Up 03:46:29 - 04:16:29 -2578
Quincy 04:01:29 -29.4 Dark Up 47.2 148.0 Up 03:46:29 - 04:16:29 -2596
Portola 04:01:27 -29.7 Dark Up 47.5 148.6 Up 03:46:27 - 04:16:27 -2597
Reno 04:01:24 -30.3 Dark Up 48.0 149.3 Up 03:46:24 - 04:16:24 -2607
Carson City 04:01:24 -30.3 Dark Up 48.3 149.1 Up 03:46:24 - 04:16:24 -2639
Yerington 04:01:22 -30.8 Dark Up 48.7 149.9 Up 03:46:22 - 04:16:22 -2642
Gardnerville 04:01:24 -30.4 Dark Up 48.5 149.1 Up 03:46:24 - 04:16:24 -2660
Hawthorne 04:01:20 -31.3 Dark Up 49.3 150.4 Up 03:46:20 - 04:16:20 -2673
Tonopah 04:01:14 -32.4 Dark Up 50.2 152.1 Up 03:46:14 - 04:16:14 -2683
Lee Vining 04:01:21 -30.9 Dark Up 49.6 149.3 Up 03:46:21 - 04:16:21 -2736
Bishop 04:01:18 -31.5 Dark Up 50.4 150.0 Up 03:46:18 - 04:16:18 -2774
Beatty 04:01:11 -32.9 Dark Up 51.4 152.1 Up 03:46:11 - 04:16:11 -2779
Indian Springs 04:01:07 -33.7 Dark Up 52.1 153.5 Up 03:46:07 - 04:16:07 -2783
Henderson 04:01:03 -34.3 Dark Up 52.8 154.2 Up 03:46:03 - 04:16:03 -2816
Patrick 04:00:58 -35.3 Dark Up 53.8 155.6 Up 03:45:58 - 04:15:58 -2847
Kingman/Dolan Springs 04:00:59 -35.2 Dark Up 53.9 155.2 Up 03:45:59 - 04:15:59 -2872
Laughlin/Bullhead City 04:01:01 -34.8 Dark Up 53.8 154.3 Up 03:46:01 - 04:16:01 -2888
Mohave Valley 04:01:01 -34.8 Dark Up 54.0 154.2 Up 03:46:01 - 04:16:01 -2913
Lake Havasu City 04:01:00 -35.0 Dark Up 54.4 154.3 Up 03:46:00 - 04:16:00 -2944
George/Scottsdale 04:00:48 -37.1 Dark Up 56.0 157.9 Up 03:45:48 - 04:15:48 -2955
Parker 04:00:59 -35.1 Dark Up 54.8 154.2 Up 03:45:59 - 04:15:59 -2977
Idyllwild 04:01:10 -33.1 Dark Up 54.2 150.1 Up 03:46:10 - 04:16:10 -3075
Wildwood 04:01:18 -31.6 Dark Up 53.1 147.5 Up 03:46:18 - 04:16:18 -3087
Calipatria 04:01:04 -34.2 Dark Up 55.2 151.5 Up 03:46:04 - 04:16:04 -3104
Yuma 04:01:00 -34.9 Dark Up 55.9 152.7 Up 03:46:00 - 04:16:00 -3123

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 05TV189, (2023/02/08 03:59UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 11.29  78
Alhena         06:37:42.8 +16:23:57  1.9 14.77  67
PPM 150810     06:35:15.8 +00:53:25  5.7  0.81  69
PPM 150790     06:34:39.7 +01:43:40  7.5  0.15  69
PPM 150765     06:34:06.1 +01:38:27  8.6  0.02  70
05TV189        06:34:09.1 +01:39:15 14.1        70
Positions are for J2000

Event circumstances last updated at 2022/09/26 02:27:04 UT

Marc W. Buie, Southwest Research Institute

RECON