RECON: TNO occultation with 183595

Event between (183595) 03TG58 and star GA1120:01886852 with event index number of 2431510

Geocentric closest approach at 2024/01/01 04:16:28 UTC

J2000 position of star is 06:11:32.4 +23:31:54
Equinox of date position of star is 06:12:59.5 +23:31:28
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 66 degrees from the moon. Moon is 77% illuminated.
Apparent brightness V=22.8

[RECON map]
Object is 41.8 AU from the Sun and 40.9 AU from the Earth.
Apparent velocity is 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 528 seconds.
The 1-sigma cross-track error in the shadow position is 2138 km.
The sky-plane scale is 29638.4 km/arcsec.

The object 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 04:16UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:28.3 +07:24:34  0.4 16.60  71
Alhena         06:39:05.9 +16:22:36  1.9  9.41  60
3 Gem          06:11:11.5 +23:06:26  5.5  0.59  66
6 Gem          06:13:46.5 +22:54:03  8.4  0.65  65
PPM 095590     06:13:21.4 +23:25:48  9.9  0.12  65
183595         06:13:00.1 +23:31:28 16.3        65
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 25.3 km RECON observability=1.0 and success probability=24.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 04:18:30 -38.6 Dark Down 44.1 107.7 Up 04:03:30 - 04:33:30 -843
Kelowna 04:18:30 -39.4 Dark Down 44.9 107.8 Up 04:03:30 - 04:33:30 -934
Peachland 04:18:31 -39.2 Dark Down 44.7 107.4 Up 04:03:31 - 04:33:31 -938
Summerland 04:18:32 -39.3 Dark Down 44.8 107.4 Up 04:03:32 - 04:33:32 -953
Penticton 04:18:31 -39.4 Dark Down 44.9 107.4 Up 04:03:31 - 04:33:31 -962
Sleaford 04:17:57 -46.7 Dark Up 51.5 124.7 Up 04:02:57 - 04:32:57 -966
Victoria 04:18:41 -37.0 Dark Down 42.7 103.0 Up 04:03:41 - 04:33:41 -971
Oliver 04:18:32 -39.4 Dark Down 45.0 107.1 Up 04:03:32 - 04:33:32 -994
Anarchist Mountain Observatory 04:18:32 -39.6 Dark Down 45.2 107.1 Up 04:03:32 - 04:33:32 -1013
Okanogan 04:18:34 -39.6 Dark Down 45.2 106.3 Up 04:03:34 - 04:33:34 -1067
Brewster 04:18:35 -39.5 Dark Down 45.2 105.9 Up 04:03:35 - 04:33:35 -1088
Manson/Chelan 04:18:37 -39.3 Dark Down 45.0 105.3 Up 04:03:37 - 04:33:37 -1099
Wenatchee 04:18:38 -39.2 Dark Down 45.0 104.7 Up 04:03:38 - 04:33:38 -1139
Ellensburg 04:18:39 -39.1 Dark Down 45.0 104.1 Up 04:03:39 - 04:33:39 -1172
Yakima 04:18:40 -39.2 Dark Down 45.1 103.7 Up 04:03:40 - 04:33:40 -1209
Toppenish/White Swan 04:18:40 -39.3 Dark Down 45.2 103.6 Up 04:03:40 - 04:33:40 -1233
The Dalles 04:18:44 -38.9 Dark Down 44.9 102.2 Up 04:03:44 - 04:33:44 -1288
PNWRO 04:18:38 -40.4 Dark Down 46.3 104.6 Up 04:03:38 - 04:33:38 -1300
Maupin 04:18:44 -39.0 Dark Down 45.0 101.9 Up 04:03:44 - 04:33:44 -1329
Sisters 04:18:48 -38.7 Dark Down 44.9 100.6 Up 04:03:48 - 04:33:48 -1400
Bend 04:18:47 -38.9 Dark Down 45.1 100.6 Up 04:03:47 - 04:33:47 -1429
Oregon Observatory 04:18:48 -38.9 Dark Down 45.0 100.3 Up 04:03:48 - 04:33:48 -1442
Chiloquin 04:18:52 -38.7 Dark Down 45.0 98.7 Up 04:03:52 - 04:33:52 -1557
Klamath Falls 04:18:53 -38.7 Dark Down 45.1 98.4 Up 04:03:53 - 04:33:53 -1592
Cedarville 04:18:51 -40.0 Dark Down 46.4 99.0 Up 04:03:51 - 04:33:51 -1697
Fall River/Burney 04:18:54 -39.1 Dark Down 45.5 97.6 Up 04:03:54 - 04:33:54 -1715
Greenville 04:18:55 -39.4 Dark Down 46.0 97.0 Up 04:03:55 - 04:33:55 -1814
Gimple 04:18:55 -39.5 Dark Down 46.1 97.0 Up 04:03:55 - 04:33:55 -1816
Quincy 04:18:56 -39.5 Dark Down 46.0 96.8 Up 04:03:56 - 04:33:56 -1834
Portola 04:18:54 -39.8 Dark Down 46.4 97.0 Up 04:03:54 - 04:33:54 -1858
Reno 04:18:54 -40.3 Dark Down 46.9 97.2 Up 04:03:54 - 04:33:54 -1900
Carson City 04:18:55 -40.4 Dark Down 47.0 96.8 Up 04:03:55 - 04:33:55 -1936
Gardnerville 04:18:55 -40.4 Dark Down 47.1 96.6 Up 04:03:55 - 04:33:55 -1961
Yerington 04:18:54 -40.9 Dark Down 47.5 97.1 Up 04:03:54 - 04:33:54 -1970
Hawthorne 04:18:53 -41.3 Dark Down 48.0 96.9 Up 04:03:53 - 04:33:53 -2029
Lee Vining 04:18:56 -40.9 Dark Down 47.7 96.0 Up 04:03:56 - 04:33:56 -2073
Dunrhomin 04:18:15 -51.2 Dark Down 57.5 110.9 Up 04:03:15 - 04:33:15 -2135
Bishop 04:18:54 -41.5 Dark Down 48.3 95.8 Up 04:03:54 - 04:33:54 -2151
Nikitin 04:18:16 -51.3 Dark Down 57.6 110.6 Up 04:03:16 - 04:33:16 -2154
CU-SBO 04:18:16 -51.2 Dark Down 57.6 110.4 Up 04:03:16 - 04:33:16 -2159
Beatty 04:18:51 -42.8 Dark Down 49.6 96.4 Up 04:03:51 - 04:33:51 -2237
Patrick 04:18:46 -45.2 Dark Down 52.1 96.6 Up 04:03:46 - 04:33:46 -2457
Laughlin/Bullhead City 04:18:49 -44.6 Dark Down 51.6 95.9 Up 04:03:49 - 04:33:49 -2466
Wildwood 04:19:01 -41.3 Dark Down 48.4 92.1 Up 04:04:01 - 04:34:01 -2478
Lake Havasu City 04:18:49 -44.8 Dark Down 51.8 95.2 Up 04:03:49 - 04:33:49 -2541
Idyllwild 04:18:57 -42.9 Dark Down 49.9 92.8 Up 04:03:57 - 04:33:57 -2562
Calipatria 04:18:55 -43.8 Dark Down 50.9 92.7 Up 04:03:55 - 04:33:55 -2654
George/Scottsdale 04:18:44 -46.9 Dark Down 53.9 95.8 Up 04:03:44 - 04:33:44 -2678
Yuma 04:18:53 -44.6 Dark Down 51.7 92.7 Up 04:03:53 - 04:33:53 -2721

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 04:16UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 16.60  71
Alhena         06:37:42.8 +16:23:57  1.9  9.41  60
3 Gem          06:09:44.0 +23:06:48  5.5  0.59  66
6 Gem          06:12:19.1 +22:54:30  8.4  0.65  65
PPM 095590     06:11:53.8 +23:26:14  9.9  0.12  65
183595         06:11:32.4 +23:31:54 16.3        65
Positions are for J2000

Event circumstances last updated at 2023/11/05 04:13:52 UT

Marc W. Buie, Southwest Research Institute

RECON