RECON: TNO occultation with 547893

Event between (547893) 10WN75 and star GA0860:01201272 with event index number of 2399147

Geocentric closest approach at 2024/10/24 07:53:50 UTC

J2000 position of star is 06:24:16.9 -03:10:42
Equinox of date position of star is 06:25:30.3 -03:11:35
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 39 degrees from the moon. Moon is 50% illuminated.
Apparent brightness V=21.6

[RECON map]
Object is 37.2 AU from the Sun and 36.8 AU from the Earth.
Apparent velocity is 13.5 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 161 seconds.
The 1-sigma cross-track error in the shadow position is 2186 km.
The sky-plane scale is 26677.5 km/arcsec.

The object has an absolute magnitude Hv=5.8
Diameter=436.5 km assuming a 5% albedo -- 31.6 sec chord
Diameter=178.2 km assuming a 30% albedo -- 12.9 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 547893, (2024/10/24 07:54UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:31.0 +07:24:35  0.4 12.84  38
Saiph          05:48:56.1 -09:39:46  2.1 11.15  50
PPM 189166     06:27:23.7 -03:31:53  6.5  0.58  39
PPM 189113     06:24:15.9 -03:17:28  7.1  0.33  40
PPM 189142     06:26:06.2 -03:02:16  9.0  0.21  39
547893         06:25:31.4 -03:11:36 15.7        39
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 5.0 sigma about the mid-time.
The median site spacing is 17.1 km RECON observability=0.3 and success probability=3.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Chiloquin 07:52:51 -59.4 Dark Up 14.8 108.7 Really Low 07:38:56 - 08:06:45 3108
Klamath Falls 07:52:53 -59.7 Dark Up 15.0 108.7 Really Low 07:38:59 - 08:06:48 3108
Fall River/Burney 07:53:00 -60.9 Dark Up 15.7 108.7 Really Low 07:39:06 - 08:06:55 3102
Greenville 07:53:08 -61.8 Dark Up 16.3 108.8 Really Low 07:39:13 - 08:07:02 3092
Quincy 07:53:08 -62.0 Dark Up 16.4 108.7 Really Low 07:39:14 - 08:07:03 3092
Oregon Observatory 07:52:40 -58.1 Dark Up 14.6 109.3 Really Low 07:38:45 - 08:06:34 3091
Sisters 07:52:34 -57.7 Dark Up 14.4 109.3 Really Low 07:38:40 - 08:06:29 3090
Gimple 07:53:08 -61.8 Dark Up 16.4 108.8 Really Low 07:39:14 - 08:07:03 3090
Bend 07:52:36 -57.9 Dark Up 14.7 109.4 Really Low 07:38:41 - 08:06:30 3086
Portola 07:53:07 -62.1 Dark Up 16.7 109.0 Really Low 07:39:13 - 08:07:02 3080
Victoria 07:52:07 -53.4 Dark Up 11.7 108.7 Really Low 07:38:12 - 08:06:01 3075
Cedarville 07:52:56 -60.4 Dark Up 16.4 109.7 Really Low 07:39:01 - 08:06:50 3072
Maupin 07:52:30 -56.8 Dark Up 14.4 109.9 Really Low 07:38:35 - 08:06:24 3071
The Dalles 07:52:27 -56.4 Dark Up 14.2 109.9 Really Low 07:38:32 - 08:06:21 3069
Reno 07:53:09 -62.3 Dark Up 17.3 109.4 Really Low 07:39:15 - 08:07:04 3063
Carson City 07:53:12 -62.7 Dark Up 17.5 109.3 Really Low 07:39:17 - 08:07:06 3062
Gardnerville 07:53:15 -62.9 Dark Up 17.6 109.3 Really Low 07:39:20 - 08:07:09 3060
Yerington 07:53:14 -62.8 Dark Up 18.0 109.7 Really Low 07:39:19 - 08:07:08 3044
Yakima 07:52:16 -55.3 Dark Up 14.2 110.6 Really Low 07:38:22 - 08:06:11 3044
Toppenish/White Swan 07:52:17 -55.6 Dark Up 14.4 110.7 Really Low 07:38:22 - 08:06:11 3043
Lee Vining 07:53:20 -63.8 Dark Up 18.4 109.5 Really Low 07:39:25 - 08:07:14 3040
Ellensburg 07:52:14 -54.9 Dark Up 14.1 110.7 Really Low 07:38:19 - 08:06:08 3039
Wenatchee 07:52:11 -54.5 Dark Up 14.1 110.9 Really Low 07:38:16 - 08:06:05 3028
Hawthorne 07:53:16 -63.2 Dark Up 18.5 110.0 Really Low 07:39:22 - 08:07:11 3028
Manson/Chelan 07:52:05 -54.0 Dark Up 14.0 111.2 Really Low 07:38:11 - 08:06:00 3018
Bishop 07:53:24 -64.4 Dark Up 19.1 109.8 Really Low 07:39:30 - 08:07:19 3015
PNWRO 07:52:18 -55.8 Dark Up 15.5 111.8 Really Low 07:38:24 - 08:06:13 3012
Brewster 07:52:04 -53.8 Dark Up 14.2 111.5 Really Low 07:38:10 - 08:05:59 3007
Okanogan 07:52:02 -53.5 Dark Up 14.2 111.7 Really Low 07:38:08 - 08:05:57 2998
Wildwood 07:53:50 -67.6 Dark Up 20.1 108.6 Low 07:39:56 - 08:07:45 2990
Oliver 07:51:55 -52.7 Dark Up 13.9 111.9 Really Low 07:38:00 - 08:05:49 2985
Anarchist Mountain Observatory 07:51:55 -52.9 Dark Up 14.1 112.0 Really Low 07:38:01 - 08:05:50 2984
Summerland 07:51:53 -52.3 Dark Up 13.6 111.9 Really Low 07:37:58 - 08:05:47 2981
Peachland 07:51:52 -52.2 Dark Up 13.5 111.9 Really Low 07:37:57 - 08:05:46 2980
Penticton 07:51:52 -52.4 Dark Up 13.7 112.0 Really Low 07:37:57 - 08:05:46 2979
Kamloops 07:51:45 -51.3 Dark Up 12.8 111.5 Really Low 07:37:50 - 08:05:39 2976
Kelowna 07:51:48 -52.0 Dark Up 13.7 112.1 Really Low 07:37:54 - 08:05:43 2972
Beatty 07:53:25 -64.6 Dark Up 20.5 110.8 Low 07:39:30 - 08:07:19 2963
Idyllwild 07:53:48 -67.6 Dark Up 21.7 109.8 Low 07:39:53 - 08:07:42 2928
Calipatria 07:53:51 -67.9 Dark Up 22.9 110.3 Low 07:39:57 - 08:07:46 2879
Laughlin/Bullhead City 07:53:33 -65.7 Dark Up 22.8 111.7 Low 07:39:38 - 08:07:27 2875
Lake Havasu City 07:53:38 -66.3 Dark Up 23.3 111.7 Low 07:39:43 - 08:07:32 2858
Patrick 07:53:29 -65.3 Dark Up 23.3 112.3 Low 07:39:35 - 08:07:24 2855
Yuma 07:53:51 -68.1 Dark Up 23.7 110.7 Low 07:39:57 - 08:07:46 2842
George/Scottsdale 07:53:36 -66.2 Dark Up 25.5 113.1 Low 07:39:42 - 08:07:31 2759
CU-SBO 07:52:33 -58.3 Dark Up 27.1 120.8 Low 07:38:39 - 08:06:28 2577
Dunrhomin 07:52:31 -58.0 Dark Up 27.1 121.0 Low 07:38:36 - 08:06:25 2575
Nikitin 07:52:34 -58.2 Dark Up 27.2 120.9 Low 07:38:40 - 08:06:29 2575
Sleaford 07:51:10 -47.9 Dark Up 20.0 124.3 Low 07:37:15 - 08:05:04 2570

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 547893, (2024/10/24 07:54UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 12.84  38
Saiph          05:47:45.4 -09:40:11  2.1 11.15  50
PPM 189166     06:26:09.4 -03:30:55  6.5  0.58  39
PPM 189113     06:23:01.5 -03:16:37  7.1  0.33  40
PPM 189142     06:24:51.6 -03:01:21  9.0  0.21  39
547893         06:24:16.9 -03:10:42 15.7        39
Positions are for J2000

Event circumstances last updated at 2024/06/12 03:40:30 UT

Marc W. Buie, Southwest Research Institute

RECON