RECON: TNO occultation with 183595

Event between (183595) 03TG58 and star GA1120:01740157 with event index number of 2431399

Geocentric closest approach at 2023/01/14 03:36:08 UTC

J2000 position of star is 06:04:18.7 +23:35:35
Equinox of date position of star is 06:05:42.9 +23:35:25
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 102 degrees from the moon. Moon is 60% illuminated.
Apparent brightness V=22.8

[RECON map]
Object is 41.9 AU from the Sun and 41.0 AU from the Earth.
Apparent velocity is 23.3 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 420 seconds.
The 1-sigma cross-track error in the shadow position is 2264 km.
The sky-plane scale is 29742.2 km/arcsec.

The object has an absolute magnitude Hv=6.6
Diameter=291.1 km assuming a 5% albedo -- 12.5 sec chord
Diameter=118.8 km assuming a 30% albedo -- 5.1 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 183595, (2023/01/14 03:36UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:25.2 +07:24:34  0.4 16.33 104
Alnath         05:27:45.0 +28:37:29  1.6  9.89 110
1 Gem          06:05:31.3 +23:15:36  4.2  0.33 102
PPM 095406     06:08:12.9 +23:38:04  8.1  0.57 101
PPM 095338     06:05:58.4 +23:22:36  9.9  0.22 102
183595         06:05:43.0 +23:35:25 15.5       101
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 2.1 sigma about the mid-time.
The median site spacing is 25.5 km RECON observability=1.0 and success probability=0.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 03:38:10 -30.2 Dark Down 46.9 112.4 Up 03:23:10 - 03:53:10 10618
Kelowna 03:38:10 -30.8 Dark Down 47.8 112.5 Up 03:23:10 - 03:53:10 10527
Peachland 03:38:11 -30.6 Dark Down 47.6 112.1 Up 03:23:11 - 03:53:11 10522
Sleaford 03:37:32 -38.7 Dark Down 53.8 130.7 Up 03:22:32 - 03:52:32 10511
Summerland 03:38:11 -30.7 Dark Down 47.8 112.0 Up 03:23:11 - 03:53:11 10507
Penticton 03:38:11 -30.7 Dark Down 47.8 112.1 Up 03:23:11 - 03:53:11 10499
Victoria 03:38:21 -28.3 Dark Down 45.8 107.3 Up 03:23:21 - 03:53:21 10485
Oliver 03:38:11 -30.8 Dark Down 48.0 111.7 Up 03:23:11 - 03:53:11 10467
Anarchist Mountain Observatory 03:38:11 -30.9 Dark Down 48.2 111.7 Up 03:23:11 - 03:53:11 10447
Okanogan 03:38:13 -30.8 Dark Down 48.3 110.9 Up 03:23:13 - 03:53:13 10392
Brewster 03:38:15 -30.7 Dark Down 48.2 110.4 Up 03:23:15 - 03:53:15 10371
Manson/Chelan 03:38:16 -30.4 Dark Down 48.1 109.8 Up 03:23:16 - 03:53:16 10359
Wenatchee 03:38:18 -30.3 Dark Down 48.1 109.1 Up 03:23:18 - 03:53:18 10318
Ellensburg 03:38:19 -30.2 Dark Down 48.1 108.5 Up 03:23:19 - 03:53:19 10285
Yakima 03:38:20 -30.2 Dark Down 48.2 108.0 Up 03:23:20 - 03:53:20 10247
Toppenish/White Swan 03:38:20 -30.3 Dark Down 48.4 108.0 Up 03:23:20 - 03:53:20 10223
The Dalles 03:38:25 -29.7 Dark Down 48.1 106.4 Up 03:23:25 - 03:53:25 10167
PNWRO 03:38:17 -31.3 Dark Down 49.5 109.0 Up 03:23:17 - 03:53:17 10157
Maupin 03:38:24 -29.8 Dark Down 48.3 106.1 Up 03:23:24 - 03:53:24 10125
Sisters 03:38:29 -29.4 Dark Down 48.2 104.7 Up 03:23:29 - 03:53:29 10053
Bend 03:38:29 -29.6 Dark Down 48.5 104.6 Up 03:23:29 - 03:53:29 10024
Oregon Observatory 03:38:28 -29.5 Dark Down 48.4 104.3 Up 03:23:28 - 03:53:28 10011
Chiloquin 03:38:33 -29.2 Dark Down 48.5 102.5 Up 03:23:33 - 03:53:33 9893
Klamath Falls 03:38:34 -29.2 Dark Down 48.6 102.2 Up 03:23:34 - 03:53:34 9858
Cedarville 03:38:32 -30.4 Dark Down 49.9 102.8 Up 03:23:32 - 03:53:32 9754
Fall River/Burney 03:38:36 -29.4 Dark Down 49.1 101.2 Up 03:23:36 - 03:53:36 9735
Greenville 03:38:35 -29.7 Dark Down 49.6 100.6 Up 03:23:35 - 03:53:35 9635
Gimple 03:38:36 -29.8 Dark Down 49.7 100.6 Up 03:23:36 - 03:53:36 9633
Quincy 03:38:37 -29.7 Dark Down 49.7 100.3 Up 03:23:37 - 03:53:37 9615
Portola 03:38:35 -30.1 Dark Down 50.0 100.6 Up 03:23:35 - 03:53:35 9592
Reno 03:38:34 -30.5 Dark Down 50.6 100.8 Up 03:23:34 - 03:53:34 9550
Carson City 03:38:35 -30.5 Dark Down 50.7 100.4 Up 03:23:35 - 03:53:35 9514
Gardnerville 03:38:36 -30.6 Dark Down 50.7 100.1 Up 03:23:36 - 03:53:36 9488
Yerington 03:38:34 -31.0 Dark Down 51.2 100.6 Up 03:23:34 - 03:53:34 9480
Hawthorne 03:38:32 -31.4 Dark Down 51.7 100.5 Up 03:23:32 - 03:53:32 9421
Lee Vining 03:38:36 -31.0 Dark Down 51.4 99.4 Up 03:23:36 - 03:53:36 9376
Dunrhomin 03:37:50 -41.6 Dark Down 60.9 116.3 Up 03:22:50 - 03:52:50 9334
Nikitin 03:37:50 -41.6 Dark Down 61.0 115.9 Up 03:22:50 - 03:52:50 9315
CU-SBO 03:37:50 -41.6 Dark Down 60.9 115.7 Up 03:22:50 - 03:52:50 9310
Bishop 03:38:35 -31.5 Dark Down 52.1 99.2 Up 03:23:35 - 03:53:35 9298
Beatty 03:38:30 -32.8 Dark Down 53.4 99.9 Up 03:23:30 - 03:53:30 9214
Patrick 03:38:25 -35.0 Dark Down 55.9 100.1 Up 03:23:25 - 03:53:25 8997
Laughlin/Bullhead City 03:38:27 -34.4 Dark Down 55.4 99.2 Up 03:23:27 - 03:53:27 8987
Wildwood 03:38:41 -31.1 Dark Down 52.3 94.9 Up 03:23:41 - 03:53:41 8969
Lake Havasu City 03:38:28 -34.6 Dark Down 55.7 98.4 Up 03:23:28 - 03:53:28 8911
Idyllwild 03:38:36 -32.6 Dark Down 53.9 95.7 Up 03:23:36 - 03:53:36 8887
Calipatria 03:38:33 -33.5 Dark Down 54.9 95.6 Up 03:23:33 - 03:53:33 8796
George/Scottsdale 03:38:21 -36.6 Dark Down 57.9 99.1 Up 03:23:21 - 03:53:21 8777
Yuma 03:38:32 -34.2 Dark Down 55.7 95.6 Up 03:23:32 - 03:53:32 8730

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 183595, (2023/01/14 03:36UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 16.33 104
Alnath         05:26:17.6 +28:36:23  1.6  9.89 110
1 Gem          06:04:07.2 +23:15:46  4.2  0.33 102
PPM 095406     06:06:48.6 +23:38:19  8.1  0.57 101
PPM 095338     06:04:34.3 +23:22:47  9.9  0.22 102
183595         06:04:18.7 +23:35:35 15.5       102
Positions are for J2000

Event circumstances last updated at 2023/01/08 03:29:14 UT

Marc W. Buie, Southwest Research Institute

RECON