RECON: TNO occultation with 183595

Event between (183595) 03TG58 and star GA1120:01886495 with event index number of 2431511

Geocentric closest approach at 2024/01/01 08:57:34 UTC

J2000 position of star is 06:11:31.3 +23:31:54
Equinox of date position of star is 06:12:52.6 +23:31:30
Stellar brightness G=14.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 68 degrees from the moon. Moon is 75% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 41.8 AU from the Sun and 40.9 AU from the Earth.
The TNO is moving 25.3 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 531 seconds.
The 1-sigma cross-track error in the shadow position is 1602 km.
The sky-plane scale is 29638.7 km/arcsec.

The TNO has an absolute magnitude Hv=6.6
Diameter=291.1 km assuming a 5% albedo -- 11.5 sec chord
Diameter=118.8 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 183595, (2024/01/01 08:58UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:28.3 +07:24:34  0.4 16.59  73
Alhena         06:39:05.9 +16:22:36  1.9  9.42  62
3 Gem          06:11:11.5 +23:06:26  5.5  0.59  68
6 Gem          06:13:46.5 +22:54:03  8.4  0.65  68
PPM 095590     06:13:21.4 +23:25:48  9.9  0.13  68
183595         06:12:59.1 +23:31:28 14.6        67
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 1.7 sigma about the mid-time.
The median site spacing is 27.6 km RECON observability=1.0 and success probability=19.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:56:06 -54.2 Dark Up 50.6 237.5 Up 08:41:06 - 09:11:06 3585
Kamloops 08:56:38 -60.6 Dark Up 58.2 219.5 Up 08:41:38 - 09:11:38 3251
Kelowna 08:56:35 -61.1 Dark Up 58.4 221.7 Up 08:41:35 - 09:11:35 3183
Peachland 08:56:35 -61.2 Dark Up 58.6 221.3 Up 08:41:35 - 09:11:35 3168
Summerland 08:56:35 -61.3 Dark Up 58.7 221.6 Up 08:41:35 - 09:11:35 3155
Penticton 08:56:35 -61.4 Dark Up 58.7 221.9 Up 08:41:35 - 09:11:35 3150
Oliver 08:56:34 -61.7 Dark Up 59.0 222.3 Up 08:41:34 - 09:11:34 3116
Anarchist Mountain Observatory 08:56:33 -61.8 Dark Up 59.0 222.8 Up 08:41:33 - 09:11:33 3102
Tonasket 08:56:33 -62.1 Dark Up 59.3 223.0 Up 08:41:33 - 09:11:33 3070
Okanogan 08:56:33 -62.4 Dark Up 59.6 223.2 Up 08:41:33 - 09:11:33 3035
Victoria 08:56:44 -63.3 Dark Up 61.1 216.8 Up 08:41:44 - 09:11:44 3008
Brewster 08:56:33 -62.7 Dark Up 59.9 223.2 Up 08:41:33 - 09:11:33 3006
Manson/Chelan 08:56:35 -63.0 Dark Up 60.2 222.8 Up 08:41:35 - 09:11:35 2981
Wenatchee 08:56:34 -63.5 Dark Up 60.6 223.1 Up 08:41:34 - 09:11:34 2933
Ellensburg 08:56:34 -63.9 Dark Up 61.0 223.3 Up 08:41:34 - 09:11:34 2889
Yakima 08:56:34 -64.3 Dark Up 61.3 223.8 Up 08:41:34 - 09:11:34 2848
Toppenish/White Swan 08:56:33 -64.4 Dark Up 61.4 224.3 Up 08:41:33 - 09:11:33 2829
PNWRO 08:56:28 -64.2 Dark Up 60.9 227.2 Up 08:41:28 - 09:11:28 2811
Goldendale 08:56:33 -65.1 Dark Up 62.0 224.3 Up 08:41:33 - 09:11:33 2768
The Dalles 08:56:34 -65.4 Dark Up 62.3 224.0 Up 08:41:34 - 09:11:34 2741
Maupin 08:56:34 -65.7 Dark Up 62.6 224.7 Up 08:41:34 - 09:11:34 2700
Sisters 08:56:34 -66.6 Dark Up 63.5 225.1 Up 08:41:34 - 09:11:34 2605
Bend 08:56:33 -66.8 Dark Up 63.5 225.9 Up 08:41:33 - 09:11:33 2584
Oregon Observatory 08:56:33 -67.0 Dark Up 63.7 225.9 Up 08:41:33 - 09:11:33 2565
North Lake 08:56:31 -67.3 Dark Up 63.8 227.8 Up 08:41:31 - 09:11:31 2507
Dunrhomin 08:55:42 -60.8 Dark Up 55.2 252.4 Up 08:40:42 - 09:10:42 2466
CU-SBO 08:55:42 -61.0 Dark Up 55.4 252.7 Up 08:40:42 - 09:10:42 2439
Chiloquin 08:56:33 -68.3 Dark Up 64.8 227.2 Up 08:41:33 - 09:11:33 2425
Lakeview 08:56:29 -68.0 Dark Up 64.2 230.3 Up 08:41:29 - 09:11:29 2405
Klamath Falls 08:56:32 -68.5 Dark Up 65.0 227.9 Up 08:41:32 - 09:11:32 2391
Cedarville 08:56:27 -68.5 Dark Up 64.6 231.7 Up 08:41:27 - 09:11:27 2340
Fall River/Burney 08:56:30 -69.4 Dark Up 65.6 230.5 Up 08:41:30 - 09:11:30 2274
Susanville 08:56:27 -69.6 Dark Up 65.5 232.8 Up 08:41:27 - 09:11:27 2218
Gimple 08:56:27 -69.9 Dark Up 65.8 232.9 Up 08:41:27 - 09:11:27 2186
Greenville 08:56:28 -70.0 Dark Up 65.9 232.8 Up 08:41:28 - 09:11:28 2185
Quincy 08:56:28 -70.1 Dark Up 66.0 233.2 Up 08:41:28 - 09:11:28 2164
Portola 08:56:26 -70.0 Dark Up 65.8 234.2 Up 08:41:26 - 09:11:26 2157
Reno 08:56:23 -69.9 Dark Up 65.5 235.7 Up 08:41:23 - 09:11:23 2138
Carson City 08:56:23 -70.2 Dark Up 65.7 236.4 Up 08:41:23 - 09:11:23 2101
Yerington 08:56:21 -70.0 Dark Up 65.4 237.7 Up 08:41:21 - 09:11:21 2090
Gardnerville 08:56:23 -70.4 Dark Up 65.8 236.9 Up 08:41:23 - 09:11:23 2076
Hawthorne 08:56:19 -70.1 Dark Up 65.3 239.4 Up 08:41:19 - 09:11:19 2049
Tonopah 08:56:14 -69.7 Dark Up 64.6 242.2 Up 08:41:14 - 09:11:14 2021
Lee Vining 08:56:20 -70.8 Dark Up 65.9 239.7 Up 08:41:20 - 09:11:20 1982
Bishop 08:56:17 -70.8 Dark Up 65.7 241.9 Up 08:41:17 - 09:11:17 1930
Beatty 08:56:11 -70.2 Dark Up 64.8 245.0 Up 08:41:11 - 09:11:11 1907
Indian Springs 08:56:08 -69.7 Dark Up 64.1 247.0 Up 08:41:08 - 09:11:08 1890
Henderson 08:56:04 -69.6 Dark Up 63.8 248.9 Up 08:41:04 - 09:11:04 1845
Patrick 08:56:00 -69.1 Dark Up 63.2 251.3 Up 08:41:00 - 09:11:00 1799
Kingman/Dolan Springs 08:56:00 -69.4 Dark Up 63.4 251.5 Up 08:41:00 - 09:11:00 1772
Laughlin/Bullhead City 08:56:02 -69.8 Dark Up 63.8 251.0 Up 08:41:02 - 09:11:02 1760
Mohave Valley 08:56:02 -69.9 Dark Up 63.9 251.5 Up 08:41:02 - 09:11:02 1732
Lake Havasu City 08:56:00 -69.9 Dark Up 63.8 252.6 Up 08:41:00 - 09:11:00 1694
George/Scottsdale 08:55:52 -68.5 Dark Up 62.1 256.4 Up 08:40:52 - 09:10:52 1657
Parker 08:56:00 -70.1 Dark Up 63.9 253.3 Up 08:41:00 - 09:11:00 1657
Wildwood 08:56:14 -73.1 Dark Up 67.3 248.4 Up 08:41:14 - 09:11:14 1580
Idyllwild 08:56:07 -72.0 Dark Up 65.9 251.5 Up 08:41:07 - 09:11:07 1572
Calipatria 08:56:03 -71.5 Dark Up 65.2 254.0 Up 08:41:03 - 09:11:03 1527
Yuma 08:55:59 -71.0 Dark Up 64.6 255.8 Up 08:40:59 - 09:10:59 1497

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, (2024/01/01 08:58UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 16.59  73
Alhena         06:37:42.8 +16:23:57  1.9  9.42  62
3 Gem          06:09:44.0 +23:06:48  5.5  0.59  68
6 Gem          06:12:19.1 +22:54:30  8.4  0.65  68
PPM 095590     06:11:53.8 +23:26:14  9.9  0.13  68
183595         06:11:31.3 +23:31:54 14.6        68
Positions are for J2000

Event circumstances last updated at 2022/03/24 00:35:21 UT

Marc W. Buie, Southwest Research Institute

RECON