RECON: TNO occultation with 02CW224

Event between 02CW224 and star GA1180:02135765 with event index number of 1266030

Geocentric closest approach at 2024/02/11 08:24:21 UTC

J2000 position of star is 06:04:19.0 +29:12:37
Equinox of date position of star is 06:05:43.9 +29:12:28
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 109 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=22.5

[RECON map]
TNO is 33.5 AU from the Sun and 32.9 AU from the Earth.
The TNO is moving 14.1 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 370 seconds.
The 1-sigma cross-track error in the shadow position is 1393 km.
The sky-plane scale is 23866.7 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=224.9 km assuming a 5% albedo -- 15.9 sec chord
Diameter=91.8 km assuming a 30% albedo -- 6.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 02CW224, (2024/02/11 08:24UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:28.7 +07:24:34  0.4 21.91 105
Alnath         05:27:49.1 +28:37:32  1.6  8.34 101
PPM 095117     05:58:05.7 +28:56:38  6.5  1.72 108
PPM 095383     06:07:38.5 +28:55:51  7.9  0.48 110
PPM 095336     06:05:55.5 +28:58:54  8.8  0.23 109
PPM 095347     06:06:31.8 +29:18:27 10.8  0.18 109
02CW224        06:05:51.1 +29:12:27 15.4       110
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 30.3 km RECON observability=1.0 and success probability=31.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:19:23 -50.1 Dark Down 35.4 273.5 Up 08:04:23 - 08:34:23 2606
Kamloops 08:19:56 -53.5 Dark Down 44.4 263.3 Up 08:04:56 - 08:34:56 2131
Kelowna 08:19:49 -54.3 Dark Down 43.9 264.8 Up 08:04:49 - 08:34:49 2072
Peachland 08:19:50 -54.4 Dark Down 44.1 264.7 Up 08:04:50 - 08:34:50 2054
Summerland 08:19:50 -54.5 Dark Down 44.0 264.9 Up 08:04:50 - 08:34:50 2042
Penticton 08:19:49 -54.6 Dark Down 44.0 265.1 Up 08:04:49 - 08:34:49 2038
Oliver 08:19:48 -54.9 Dark Down 44.0 265.4 Up 08:04:48 - 08:34:48 2004
Anarchist Mountain Observatory 08:19:46 -55.1 Dark Down 43.9 265.7 Up 08:04:46 - 08:34:46 1992
Tonasket 08:19:45 -55.4 Dark Down 44.0 265.9 Up 08:04:45 - 08:34:45 1960
Okanogan 08:19:45 -55.7 Dark Down 44.1 266.1 Up 08:04:45 - 08:34:45 1924
Brewster 08:19:45 -56.0 Dark Down 44.2 266.2 Up 08:04:45 - 08:34:45 1893
Manson/Chelan 08:19:45 -56.2 Dark Down 44.5 266.2 Up 08:04:45 - 08:34:45 1864
Victoria 08:19:58 -55.6 Dark Down 46.6 262.9 Up 08:04:58 - 08:34:58 1858
Wenatchee 08:19:44 -56.7 Dark Down 44.7 266.5 Up 08:04:44 - 08:34:44 1813
Ellensburg 08:19:43 -57.1 Dark Down 44.8 266.7 Up 08:04:43 - 08:34:43 1768
Yakima 08:19:41 -57.5 Dark Down 44.9 267.1 Up 08:04:41 - 08:34:41 1727
Toppenish/White Swan 08:19:41 -57.8 Dark Down 44.8 267.5 Up 08:04:41 - 08:34:41 1709
PNWRO 08:19:34 -58.1 Dark Down 43.8 268.9 Up 08:04:34 - 08:34:34 1708
Goldendale 08:19:40 -58.3 Dark Down 45.1 267.7 Up 08:04:40 - 08:34:40 1645
The Dalles 08:19:40 -58.6 Dark Down 45.4 267.6 Up 08:04:40 - 08:34:40 1614
Maupin 08:19:39 -59.0 Dark Down 45.3 268.1 Up 08:04:39 - 08:34:39 1574
Dunrhomin 08:18:32 -60.4 Dark Down 33.4 282.0 Up 08:03:32 - 08:33:32 1536
CU-SBO 08:18:31 -60.7 Dark Down 33.5 282.1 Up 08:03:31 - 08:33:31 1508
Sisters 08:19:37 -59.9 Dark Down 45.7 268.7 Up 08:04:37 - 08:34:37 1474
Bend 08:19:36 -60.1 Dark Down 45.5 269.1 Up 08:04:36 - 08:34:36 1456
Oregon Observatory 08:19:35 -60.3 Dark Down 45.6 269.2 Up 08:04:35 - 08:34:35 1436
North Lake 08:19:32 -60.9 Dark Down 45.2 270.2 Up 08:04:32 - 08:34:32 1384
Chiloquin 08:19:33 -61.6 Dark Down 45.9 270.2 Up 08:04:33 - 08:34:33 1292
Lakeview 08:19:26 -61.9 Dark Down 44.8 271.6 Up 08:04:26 - 08:34:26 1289
Klamath Falls 08:19:32 -61.9 Dark Down 45.9 270.6 Up 08:04:32 - 08:34:32 1259
Cedarville 08:19:24 -62.6 Dark Down 44.7 272.4 Up 08:04:24 - 08:34:24 1227
Fall River/Burney 08:19:26 -63.1 Dark Down 45.6 272.1 Up 08:04:26 - 08:34:26 1147
Susanville 08:19:22 -63.7 Dark Down 45.0 273.2 Up 08:04:22 - 08:34:22 1101
Gimple 08:19:22 -64.0 Dark Down 45.1 273.3 Up 08:04:22 - 08:34:22 1067
Greenville 08:19:22 -64.0 Dark Down 45.2 273.3 Up 08:04:22 - 08:34:22 1065
Quincy 08:19:22 -64.2 Dark Down 45.2 273.5 Up 08:04:22 - 08:34:22 1044
Portola 08:19:20 -64.3 Dark Down 44.8 273.9 Up 08:04:20 - 08:34:20 1043
Reno 08:19:16 -64.6 Dark Down 44.3 274.5 Up 08:04:16 - 08:34:16 1032
Carson City 08:19:15 -64.9 Dark Down 44.3 274.9 Up 08:04:15 - 08:34:15 996
Yerington 08:19:12 -65.1 Dark Down 43.8 275.4 Up 08:04:12 - 08:34:12 992
Gardnerville 08:19:14 -65.2 Dark Down 44.2 275.1 Up 08:04:14 - 08:34:14 972
Hawthorne 08:19:09 -65.5 Dark Down 43.3 276.1 Up 08:04:09 - 08:34:09 958
Tonopah 08:19:02 -65.8 Dark Down 42.2 277.3 Up 08:04:02 - 08:34:02 949
Lee Vining 08:19:09 -66.1 Dark Down 43.6 276.4 Up 08:04:09 - 08:34:09 887
Bishop 08:19:05 -66.6 Dark Down 43.0 277.3 Up 08:04:05 - 08:34:05 845
Beatty 08:18:57 -66.9 Dark Down 41.7 278.5 Up 08:03:57 - 08:33:57 843
Indian Springs 08:18:52 -67.0 Dark Down 40.8 279.4 Up 08:03:52 - 08:33:52 840
Henderson 08:18:48 -67.4 Dark Down 40.2 280.1 Up 08:03:48 - 08:33:48 806
Patrick 08:18:42 -67.8 Dark Down 39.2 281.1 Up 08:03:42 - 08:33:42 775
Kingman/Dolan Springs 08:18:42 -68.0 Dark Down 39.3 281.2 Up 08:03:42 - 08:33:42 747
Laughlin/Bullhead City 08:18:44 -68.2 Dark Down 39.7 281.0 Up 08:03:44 - 08:33:44 728
Mohave Valley 08:18:44 -68.4 Dark Down 39.6 281.2 Up 08:03:44 - 08:33:44 700
Lake Havasu City 08:18:42 -68.7 Dark Down 39.4 281.7 Up 08:03:42 - 08:33:42 667
George/Scottsdale 08:18:31 -68.7 Dark Down 37.2 283.3 Up 08:03:31 - 08:33:31 665
Parker 08:18:40 -69.1 Dark Down 39.3 282.0 Up 08:03:40 - 08:33:40 632
Idyllwild 08:18:49 -70.0 Dark Down 41.1 281.3 Up 08:03:49 - 08:33:49 517
Wildwood 08:18:57 -69.9 Dark Down 42.7 280.2 Up 08:03:57 - 08:33:57 499
Calipatria 08:18:42 -70.3 Dark Down 40.0 282.3 Up 08:03:42 - 08:33:42 489
Yuma 08:18:38 -70.5 Dark Down 39.2 283.0 Up 08:03:38 - 08:33:38 471

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 02CW224, (2024/02/11 08:24UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 21.91 105
Alnath         05:26:17.5 +28:36:23  1.6  8.34 101
PPM 095117     05:56:33.8 +28:56:32  6.5  1.72 108
PPM 095383     06:06:06.5 +28:56:06  7.9  0.48 110
PPM 095336     06:04:23.5 +28:59:05  8.8  0.23 109
PPM 095347     06:04:59.6 +29:18:39 10.8  0.18 109
02CW224        06:04:19.0 +29:12:37 15.4       109
Positions are for J2000

Event circumstances last updated at 2022/03/25 00:32:36 UT

Marc W. Buie, Southwest Research Institute

RECON