RECON: TNO occultation with 530055

Event between (530055) 10VW224 and star GA1080:00922872 with event index number of 2435678

Geocentric closest approach at 2023/12/12 10:34:16 UTC

J2000 position of star is 05:17:32.3 +19:35:04
Equinox of date position of star is 05:18:53.8 +19:36:28
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 170 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=22.5

[RECON map]
Object is 49.7 AU from the Sun and 48.7 AU from the Earth.
Apparent velocity is 26.4 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 195 seconds.
The 1-sigma cross-track error in the shadow position is 2321 km.
The sky-plane scale is 35354.2 km/arcsec.

The object has an absolute magnitude Hv=5.6
Diameter=478.6 km assuming a 5% albedo -- 17.7 sec chord
Diameter=195.4 km assuming a 30% albedo -- 7.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 530055, (2023/12/12 10:31UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:17.8 +16:33:20  0.8 10.36 170
Alnath         05:27:48.5 +28:37:32  1.6  9.24 171
PPM 120839     05:21:43.1 +19:36:02  6.5  0.65 169
PPM 120767     05:17:08.7 +19:45:18  8.3  0.45 170
PPM 120808     05:19:36.2 +19:20:37  9.6  0.31 170
530055         05:18:57.2 +19:36:31 16.5       170
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 4.6 sigma about the mid-time.
The median site spacing is 32.7 km RECON observability=1.0 and success probability=0.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 10:32:07 -40.1 Dark Down 37.4 252.8 Up 10:17:07 - 10:47:07 11591
Kamloops 10:32:32 -48.9 Dark Down 46.2 239.4 Up 10:17:32 - 10:47:32 11260
Kelowna 10:32:28 -48.8 Dark Down 46.1 241.2 Up 10:17:28 - 10:47:28 11196
Peachland 10:32:28 -49.0 Dark Down 46.3 240.9 Up 10:17:28 - 10:47:28 11182
Summerland 10:32:28 -49.0 Dark Down 46.3 241.2 Up 10:17:28 - 10:47:28 11170
Penticton 10:32:28 -49.0 Dark Down 46.3 241.4 Up 10:17:28 - 10:47:28 11165
Oliver 10:32:27 -49.1 Dark Down 46.5 241.7 Up 10:17:27 - 10:47:27 11132
Anarchist Mountain Observatory 10:32:27 -49.1 Dark Down 46.5 242.0 Up 10:17:27 - 10:47:27 11119
Okanogan 10:32:26 -49.5 Dark Down 46.9 242.4 Up 10:17:26 - 10:47:26 11056
Brewster 10:32:26 -49.7 Dark Down 47.1 242.4 Up 10:17:26 - 10:47:26 11028
Victoria 10:32:35 -51.7 Dark Down 49.0 238.0 Up 10:17:35 - 10:47:35 11024
Manson/Chelan 10:32:26 -50.0 Dark Down 47.4 242.2 Up 10:17:26 - 10:47:26 11003
Wenatchee 10:32:25 -50.3 Dark Down 47.8 242.5 Up 10:17:25 - 10:47:25 10956
Ellensburg 10:32:26 -50.6 Dark Down 48.1 242.7 Up 10:17:26 - 10:47:26 10914
Yakima 10:32:24 -50.8 Dark Down 48.3 243.1 Up 10:17:24 - 10:47:24 10875
Toppenish/White Swan 10:32:25 -50.8 Dark Down 48.3 243.5 Up 10:17:25 - 10:47:25 10857
PNWRO 10:32:20 -50.0 Dark Down 47.5 245.4 Up 10:17:20 - 10:47:20 10842
The Dalles 10:32:24 -51.6 Dark Down 49.1 243.4 Up 10:17:24 - 10:47:24 10771
Maupin 10:32:23 -51.7 Dark Down 49.2 244.0 Up 10:17:23 - 10:47:23 10732
Sisters 10:32:23 -52.3 Dark Down 49.9 244.4 Up 10:17:23 - 10:47:23 10640
Bend 10:32:23 -52.2 Dark Down 49.9 244.9 Up 10:17:23 - 10:47:23 10621
Oregon Observatory 10:32:23 -52.4 Dark Down 50.0 244.9 Up 10:17:23 - 10:47:23 10602
Dunrhomin 10:31:51 -41.4 Dark Down 39.5 262.6 Up 10:16:51 - 10:46:51 10526
Nikitin 10:31:51 -41.5 Dark Down 39.6 262.7 Up 10:16:51 - 10:46:51 10508
CU-SBO 10:31:51 -41.5 Dark Down 39.6 262.7 Up 10:16:51 - 10:46:51 10500
Chiloquin 10:32:21 -53.1 Dark Down 50.9 245.9 Up 10:17:21 - 10:47:21 10466
Klamath Falls 10:32:21 -53.2 Dark Down 51.0 246.4 Up 10:17:21 - 10:47:21 10433
Cedarville 10:32:16 -52.3 Dark Down 50.1 248.8 Up 10:17:16 - 10:47:16 10386
Fall River/Burney 10:32:18 -53.3 Dark Down 51.1 248.1 Up 10:17:18 - 10:47:18 10320
Gimple 10:32:15 -53.2 Dark Down 51.1 249.7 Up 10:17:15 - 10:47:15 10236
Greenville 10:32:16 -53.3 Dark Down 51.2 249.6 Up 10:17:16 - 10:47:16 10235
Quincy 10:32:14 -53.3 Dark Down 51.2 249.9 Up 10:17:14 - 10:47:14 10215
Portola 10:32:14 -53.0 Dark Down 50.9 250.5 Up 10:17:14 - 10:47:14 10209
Reno 10:32:11 -52.6 Dark Down 50.6 251.4 Up 10:17:11 - 10:47:11 10192
Carson City 10:32:12 -52.6 Dark Down 50.7 251.8 Up 10:17:12 - 10:47:12 10156
Yerington 10:32:10 -52.2 Dark Down 50.3 252.6 Up 10:17:10 - 10:47:10 10146
Gardnerville 10:32:10 -52.7 Dark Down 50.7 252.1 Up 10:17:10 - 10:47:10 10132
Hawthorne 10:32:08 -51.9 Dark Down 50.0 253.6 Up 10:17:08 - 10:47:08 10107
Lee Vining 10:32:07 -52.4 Dark Down 50.5 253.8 Up 10:17:07 - 10:47:07 10042
Bishop 10:32:05 -52.0 Dark Down 50.1 255.1 Up 10:17:05 - 10:47:05 9992
Beatty 10:31:59 -50.8 Dark Down 49.0 257.0 Up 10:16:59 - 10:46:59 9971
Patrick 10:31:51 -48.6 Dark Down 47.0 260.8 Up 10:16:51 - 10:46:51 9869
Laughlin/Bullhead City 10:31:52 -49.2 Dark Down 47.6 260.6 Up 10:16:52 - 10:46:52 9831
Lake Havasu City 10:31:51 -49.1 Dark Down 47.5 261.5 Up 10:16:51 - 10:46:51 9766
George/Scottsdale 10:31:51 -47.1 Dark Down 45.6 263.9 Up 10:16:51 - 10:46:51 9735
Wildwood 10:32:01 -52.6 Dark Down 51.1 258.8 Up 10:17:01 - 10:47:01 9650
Idyllwild 10:31:55 -51.1 Dark Down 49.6 260.6 Up 10:16:55 - 10:46:55 9645
Calipatria 10:31:52 -50.2 Dark Down 48.7 262.2 Up 10:16:52 - 10:46:52 9602
Yuma 10:31:51 -49.4 Dark Down 48.0 263.2 Up 10:16:51 - 10:46:51 9573

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 530055, (2023/12/12 10:31UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 10.36 170
Alnath         05:26:17.6 +28:36:23  1.6  9.24 171
PPM 120839     05:20:18.3 +19:34:41  6.5  0.65 169
PPM 120767     05:15:43.8 +19:43:48  8.3  0.45 170
PPM 120808     05:18:11.5 +19:19:12  9.6  0.31 170
530055         05:17:32.3 +19:35:04 16.5       170
Positions are for J2000

Event circumstances last updated at 2022/12/24 03:55:30 UT

Marc W. Buie, Southwest Research Institute

RECON