RECON: TNO occultation with 02CD251

Event between 02CD251 and star GA0920:03596246 with event index number of 1180637

Geocentric closest approach at 2023/03/20 05:44:38 UTC

J2000 position of star is 11:41:54.5 +03:14:55
Equinox of date position of star is 11:43:04.6 +03:07:20
Stellar brightness G=14.3, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 164 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 42.8 AU from the Sun and 41.8 AU from the Earth.
The TNO is moving 25.3 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 273 seconds.
The 1-sigma cross-track error in the shadow position is 4406 km.
The sky-plane scale is 30295.5 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=233.4 km assuming a 5% albedo -- 9.2 sec chord
Diameter=95.3 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 02CD251, (2023/03/20 05:55UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:36.4 +11:51:10  1.3 24.74 170
Denebola       11:50:14.6 +14:26:32  2.1 11.46 165
89 Leo         11:35:33.3 +02:55:51  6.2  1.89 166
PPM 158073     11:40:39.6 +02:43:06  8.4  0.73 164
PPM 158121     11:43:20.5 +02:44:58  8.7  0.38 164
02CD251        11:43:06.0 +03:07:11 14.3       164
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 3.3 sigma about the mid-time.
The median site spacing is 27.0 km RECON observability=1.0 and success probability=11.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 05:46:35 -35.2 Dark Down 39.1 157.6 Up 05:31:35 - 06:01:35 3734
Kamloops 05:47:08 -31.3 Dark Down 35.7 140.0 Up 05:32:08 - 06:02:08 3285
Kelowna 05:47:07 -32.3 Dark Down 36.7 140.6 Up 05:32:07 - 06:02:07 3234
Peachland 05:47:07 -32.2 Dark Down 36.6 140.2 Up 05:32:07 - 06:02:07 3218
Summerland 05:47:07 -32.4 Dark Down 36.8 140.3 Up 05:32:07 - 06:02:07 3207
Penticton 05:47:07 -32.5 Dark Down 36.9 140.4 Up 05:32:07 - 06:02:07 3204
Oliver 05:47:07 -32.8 Dark Down 37.1 140.2 Up 05:32:07 - 06:02:07 3173
Anarchist Mountain Observatory 05:47:07 -33.0 Dark Down 37.4 140.3 Up 05:32:07 - 06:02:07 3163
Tonasket 05:47:07 -33.2 Dark Down 37.6 140.1 Up 05:32:07 - 06:02:07 3134
Okanogan 05:47:07 -33.3 Dark Down 37.8 139.8 Up 05:32:07 - 06:02:07 3101
Brewster 05:47:08 -33.4 Dark Down 37.9 139.4 Up 05:32:08 - 06:02:08 3072
Manson/Chelan 05:47:09 -33.4 Dark Down 37.9 138.9 Up 05:32:09 - 06:02:09 3045
Victoria 05:47:16 -31.5 Dark Down 35.9 135.6 Up 05:32:16 - 06:02:16 3029
Wenatchee 05:47:10 -33.7 Dark Down 38.2 138.4 Up 05:32:10 - 06:02:10 2999
Ellensburg 05:47:10 -33.9 Dark Down 38.4 138.0 Up 05:32:10 - 06:02:10 2957
Yakima 05:47:10 -34.2 Dark Down 38.7 137.7 Up 05:32:10 - 06:02:10 2919
PNWRO 05:47:06 -35.4 Dark Down 39.9 139.3 Up 05:32:06 - 06:02:06 2906
Toppenish/White Swan 05:47:10 -34.4 Dark Down 38.9 137.8 Up 05:32:10 - 06:02:10 2904
Goldendale 05:47:12 -34.6 Dark Down 39.1 137.0 Up 05:32:12 - 06:02:12 2844
The Dalles 05:47:11 -34.6 Dark Down 39.1 136.5 Up 05:32:11 - 06:02:11 2814
Maupin 05:47:12 -34.9 Dark Down 39.5 136.4 Up 05:32:12 - 06:02:12 2779
Dunrhomin 05:46:28 -45.9 Dark Down 50.1 153.7 Up 05:31:28 - 06:01:28 2765
CU-SBO 05:46:28 -46.1 Dark Down 50.3 153.5 Up 05:31:28 - 06:01:28 2740
Sisters 05:47:14 -35.3 Dark Down 39.8 135.3 Up 05:32:14 - 06:02:14 2686
Bend 05:47:13 -35.6 Dark Down 40.1 135.5 Up 05:32:13 - 06:02:13 2670
Oregon Observatory 05:47:13 -35.6 Dark Down 40.2 135.2 Up 05:32:13 - 06:02:13 2651
North Lake 05:47:12 -36.3 Dark Down 40.9 135.4 Up 05:32:12 - 06:02:12 2604
Lakeview 05:47:11 -37.3 Dark Down 42.0 135.4 Up 05:32:11 - 06:02:11 2519
Chiloquin 05:47:14 -36.3 Dark Down 40.9 134.0 Up 05:32:14 - 06:02:14 2517
Klamath Falls 05:47:14 -36.5 Dark Down 41.2 133.8 Up 05:32:14 - 06:02:14 2486
Cedarville 05:47:10 -37.9 Dark Down 42.5 135.2 Up 05:32:10 - 06:02:10 2461
Fall River/Burney 05:47:14 -37.5 Dark Down 42.2 133.5 Up 05:32:14 - 06:02:14 2384
Susanville 05:47:11 -38.4 Dark Down 43.0 133.9 Up 05:32:11 - 06:02:11 2342
Gimple 05:47:12 -38.4 Dark Down 43.1 133.5 Up 05:32:12 - 06:02:12 2310
Greenville 05:47:13 -38.4 Dark Down 43.1 133.4 Up 05:32:13 - 06:02:13 2308
Portola 05:47:12 -38.9 Dark Down 43.6 133.7 Up 05:32:12 - 06:02:12 2289
Quincy 05:47:13 -38.5 Dark Down 43.2 133.3 Up 05:32:13 - 06:02:13 2289
Reno 05:47:10 -39.4 Dark Down 44.1 134.3 Up 05:32:10 - 06:02:10 2281
Carson City 05:47:09 -39.7 Dark Down 44.4 134.0 Up 05:32:09 - 06:02:09 2247
Yerington 05:47:07 -40.2 Dark Down 44.9 134.6 Up 05:32:07 - 06:02:07 2245
Gardnerville 05:47:09 -39.9 Dark Down 44.6 133.9 Up 05:32:09 - 06:02:09 2225
Hawthorne 05:47:06 -40.8 Dark Down 45.5 134.9 Up 05:32:06 - 06:02:06 2215
Tonopah 05:47:02 -41.9 Dark Down 46.6 136.3 Up 05:32:02 - 06:02:02 2209
Lee Vining 05:47:07 -40.9 Dark Down 45.6 133.9 Up 05:32:07 - 06:02:07 2147
Beatty 05:47:01 -43.0 Dark Down 47.7 136.0 Up 05:32:01 - 06:02:01 2109
Indian Springs 05:46:57 -43.8 Dark Down 48.5 137.0 Up 05:31:57 - 06:01:57 2109
Bishop 05:47:05 -41.7 Dark Down 46.4 134.3 Up 05:32:05 - 06:02:05 2108
Henderson 05:46:55 -44.6 Dark Down 49.3 137.5 Up 05:31:55 - 06:01:55 2077
Patrick 05:46:52 -45.7 Dark Down 50.3 138.4 Up 05:31:52 - 06:01:52 2050
Kingman/Dolan Springs 05:46:52 -45.7 Dark Down 50.4 138.0 Up 05:31:52 - 06:01:52 2022
Laughlin/Bullhead City 05:46:54 -45.4 Dark Down 50.1 137.3 Up 05:31:54 - 06:01:54 2004
Mohave Valley 05:46:54 -45.6 Dark Down 50.3 137.1 Up 05:31:54 - 06:01:54 1978
Lake Havasu City 05:46:53 -46.0 Dark Down 50.7 137.1 Up 05:31:53 - 06:01:53 1946
George/Scottsdale 05:46:44 -48.0 Dark Down 52.7 139.7 Up 05:31:44 - 06:01:44 1946
Parker 05:46:52 -46.3 Dark Down 51.0 136.8 Up 05:31:52 - 06:01:52 1913
Idyllwild 05:46:59 -45.1 Dark Down 49.9 133.4 Up 05:31:59 - 06:01:59 1801
Wildwood 05:47:05 -43.7 Dark Down 48.5 131.5 Up 05:32:05 - 06:02:05 1781
Calipatria 05:46:55 -46.3 Dark Down 51.0 134.4 Up 05:31:55 - 06:01:55 1776
Yuma 05:46:53 -47.1 Dark Down 51.9 135.1 Up 05:31:53 - 06:01:53 1760

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 02CD251, (2023/03/20 05:55UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 24.74 170
Denebola       11:49:02.9 +14:34:17  2.1 11.46 165
89 Leo         11:34:21.7 +03:03:34  6.2  1.89 166
PPM 158073     11:39:28.1 +02:50:49  8.4  0.73 164
PPM 158121     11:42:09.0 +02:52:42  8.7  0.38 164
02CD251        11:41:54.5 +03:14:55 14.3       164
Positions are for J2000

Event circumstances last updated at 2022/09/30 04:16:44 UT

Marc W. Buie, Southwest Research Institute

RECON