RECON: TNO occultation with 530055

Event between (530055) 10VW224 and star GA1080:00884020 with event index number of 2435640

Geocentric closest approach at 2022/12/12 02:33:31 UTC

J2000 position of star is 05:13:30.3 +19:22:19
Equinox of date position of star is 05:14:51.4 +19:23:50
Stellar brightness G=13.7, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 45 degrees from the moon. Moon is 86% illuminated.
TNO apparent brightness V=22.5

[RECON map]
TNO is 49.7 AU from the Sun and 48.8 AU from the Earth.
The TNO is moving 26.3 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 171 seconds.
The 1-sigma cross-track error in the shadow position is 2031 km.
The sky-plane scale is 35367.7 km/arcsec.

The TNO has an absolute magnitude Hv=5.6
Diameter=478.6 km assuming a 5% albedo -- 17.8 sec chord
Diameter=195.4 km assuming a 30% albedo -- 7.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 530055, (2022/12/12 02:34UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:14.4 +16:33:13  0.8  9.38  54
Alnath         05:27:44.7 +28:37:29  1.6  9.68  40
104 Tau        05:08:48.4 +18:40:27  5.6  1.60  47
PPM 120767     05:17:05.1 +19:45:15  8.3  0.63  44
PPM 120740     05:15:39.1 +19:17:24  8.7  0.22  45
530055         05:14:51.5 +19:23:50 13.7        45
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 24.9 km RECON observability=0.9 and success probability=14.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Nikitin 02:33:18 -7.9 NT Up 4.2 180.6 Really Low 02:18:34 - 02:48:01 -84
Kamloops 02:35:52 -24.0 Dark Down 21.8 85.6 Low 02:21:09 - 02:50:36 -1820
Victoria 02:36:00 -21.7 Dark Down 19.6 82.6 Really Low 02:21:17 - 02:50:44 -1893
Kelowna 02:35:55 -24.5 Dark Down 22.3 86.0 Low 02:21:11 - 02:50:38 -1897
Peachland 02:35:55 -24.3 Dark Down 22.1 85.7 Low 02:21:11 - 02:50:38 -1898
Summerland 02:35:55 -24.3 Dark Down 22.1 85.7 Low 02:21:12 - 02:50:39 -1910
Penticton 02:35:56 -24.4 Dark Down 22.2 85.8 Low 02:21:12 - 02:50:39 -1918
Oliver 02:35:56 -24.3 Dark Down 22.2 85.6 Low 02:21:13 - 02:50:40 -1942
Anarchist Mountain Observatory 02:35:57 -24.4 Dark Down 22.3 85.7 Low 02:21:14 - 02:50:41 -1958
Okanogan 02:35:59 -24.2 Dark Down 22.1 85.3 Low 02:21:16 - 02:50:43 -1999
Brewster 02:36:00 -24.0 Dark Down 22.0 85.0 Low 02:21:17 - 02:50:44 -2013
Manson/Chelan 02:36:01 -23.8 Dark Down 21.7 84.7 Low 02:21:18 - 02:50:45 -2019
Wenatchee 02:36:03 -23.6 Dark Down 21.5 84.4 Low 02:21:19 - 02:50:46 -2048
Sleaford 02:35:37 -33.0 Dark Up 30.7 97.7 Up 02:20:53 - 02:50:20 -2054
Ellensburg 02:36:04 -23.4 Dark Down 21.3 84.1 Low 02:21:20 - 02:50:47 -2072
Yakima 02:36:05 -23.3 Dark Down 21.3 83.9 Low 02:21:22 - 02:50:49 -2102
Toppenish/White Swan 02:36:06 -23.4 Dark Down 21.4 84.0 Low 02:21:23 - 02:50:50 -2122
The Dalles 02:36:09 -22.7 Dark Down 20.8 83.1 Low 02:21:25 - 02:50:52 -2158
PNWRO 02:36:06 -24.3 Dark Down 22.4 84.8 Low 02:21:23 - 02:50:50 -2188
Maupin 02:36:10 -22.7 Dark Down 20.8 83.0 Low 02:21:27 - 02:50:54 -2192
Sisters 02:36:13 -22.2 Dark Down 20.3 82.4 Low 02:21:30 - 02:50:57 -2244
Bend 02:36:14 -22.3 Dark Down 20.5 82.5 Low 02:21:30 - 02:50:57 -2269
Oregon Observatory 02:36:14 -22.2 Dark Down 20.4 82.3 Low 02:21:31 - 02:50:58 -2279
Chiloquin 02:36:19 -21.7 Dark Down 19.9 81.6 Really Low 02:21:35 - 02:51:02 -2368
Klamath Falls 02:36:19 -21.7 Dark Down 19.9 81.5 Really Low 02:21:36 - 02:51:03 -2397
Cedarville 02:36:21 -22.7 Dark Down 21.0 82.3 Low 02:21:37 - 02:51:04 -2496
Fall River/Burney 02:36:22 -21.7 Dark Down 20.0 81.3 Low 02:21:39 - 02:51:06 -2501
Greenville 02:36:25 -21.8 Dark Down 20.2 81.3 Low 02:21:41 - 02:51:08 -2586
Gimple 02:36:25 -21.9 Dark Down 20.3 81.3 Low 02:21:41 - 02:51:08 -2588
Quincy 02:36:26 -21.8 Dark Down 20.2 81.2 Low 02:21:42 - 02:51:09 -2602
Portola 02:36:26 -22.1 Dark Down 20.6 81.5 Low 02:21:42 - 02:51:09 -2626
Reno 02:36:26 -22.6 Dark Down 21.0 81.7 Low 02:21:42 - 02:51:09 -2666
Carson City 02:36:27 -22.5 Dark Down 21.0 81.6 Low 02:21:43 - 02:51:10 -2696
Gardnerville 02:36:28 -22.5 Dark Down 21.0 81.6 Low 02:21:44 - 02:51:11 -2718
Yerington 02:36:27 -23.0 Dark Down 21.4 81.9 Low 02:21:44 - 02:51:11 -2731
Hawthorne 02:36:28 -23.3 Dark Down 21.8 82.1 Low 02:21:45 - 02:51:12 -2785
Lee Vining 02:36:30 -22.8 Dark Down 21.3 81.6 Low 02:21:46 - 02:51:13 -2817
Bishop 02:36:31 -23.2 Dark Down 21.8 81.7 Low 02:21:48 - 02:51:15 -2890
Beatty 02:36:31 -24.4 Dark Down 23.1 82.5 Low 02:21:47 - 02:51:14 -2978
Dunrhomin 02:36:10 -33.8 Dark Up 32.2 91.1 Up 02:21:26 - 02:50:53 -3020
CU-SBO 02:36:11 -33.7 Dark Up 32.2 90.9 Up 02:21:27 - 02:50:54 -3039
Wildwood 02:36:39 -22.4 Dark Down 21.2 80.4 Low 02:21:56 - 02:51:23 -3166
Patrick 02:36:32 -26.4 Dark Down 25.2 83.4 Low 02:21:49 - 02:51:16 -3194
Laughlin/Bullhead City 02:36:34 -25.8 Dark Down 24.6 82.9 Low 02:21:50 - 02:51:17 -3195
Idyllwild 02:36:39 -23.8 Dark Down 22.7 81.2 Low 02:21:56 - 02:51:23 -3256
Lake Havasu City 02:36:35 -25.9 Dark Down 24.7 82.7 Low 02:21:51 - 02:51:18 -3262
Calipatria 02:36:40 -24.7 Dark Down 23.6 81.5 Low 02:21:56 - 02:51:23 -3348
George/Scottsdale 02:36:34 -27.8 Dark Down 26.7 83.6 Low 02:21:51 - 02:51:18 -3408
Yuma 02:36:39 -25.3 Dark Down 24.2 81.8 Low 02:21:56 - 02:51:23 -3415

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, (2022/12/12 02:34UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  9.38  54
Alnath         05:26:17.6 +28:36:23  1.6  9.68  40
104 Tau        05:07:27.8 +18:38:43  5.6  1.60  47
PPM 120767     05:15:43.8 +19:43:48  8.3  0.63  44
PPM 120740     05:14:18.0 +19:15:54  8.7  0.22  45
530055         05:13:30.3 +19:22:19 13.7        45
Positions are for J2000

Event circumstances last updated at 2022/12/08 02:48:20 UT

Marc W. Buie, Southwest Research Institute

RECON