RECON: TNO occultation with 545361

Event between (545361) 11GZ61 and star GA0680:05826570 with event index number of 2398654

Geocentric closest approach at 2022/04/07 08:11:29 UTC

J2000 position of star is 14:11:05.6 -21:50:20
Equinox of date position of star is 14:12:20.3 -21:56:33
Stellar brightness G=12.7, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 132 degrees from the moon. Moon is 32% illuminated.
TNO apparent brightness V=21.8

[RECON map]
TNO is 38.6 AU from the Sun and 37.7 AU from the Earth.
The TNO is moving 22.7 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 159 seconds.
The 1-sigma cross-track error in the shadow position is 2416 km.
The sky-plane scale is 27356.6 km/arcsec.

The TNO has an absolute magnitude Hv=5.9
Diameter=401.8 km assuming a 5% albedo -- 17.7 sec chord
Diameter=164.0 km assuming a 30% albedo -- 7.2 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 545361, (2022/04/07 08:11UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:22.2 -11:16:37  1.0 15.32 118
5The Cen       14:08:00.1 -36:28:42  2.1 14.57 133
PPM 262433     14:05:07.9 -22:31:39  6.3  1.77 130
PPM 262574     14:11:18.1 -21:20:37  8.3  0.65 131
PPM 262607     14:12:32.0 -22:12:06  9.9  0.26 132
545361         14:12:20.5 -21:56:34 12.7       132
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 11.4 km RECON observability=0.7 and success probability=5.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:12:47 -29.3 Dark Up 16.1 180.1 Really Low 07:59:00 - 08:26:34 -2132
Kamloops 08:13:28 -32.4 Dark Up 16.4 166.3 Really Low 07:59:41 - 08:27:15 -2505
Kelowna 08:13:26 -33.2 Dark Up 17.3 167.1 Really Low 07:59:39 - 08:27:13 -2514
Peachland 08:13:27 -33.3 Dark Up 17.4 166.8 Really Low 07:59:40 - 08:27:14 -2526
Penticton 08:13:26 -33.5 Dark Up 17.6 167.0 Really Low 07:59:39 - 08:27:13 -2530
Summerland 08:13:26 -33.5 Dark Up 17.6 166.9 Really Low 07:59:39 - 08:27:13 -2530
Oliver 08:13:26 -33.9 Dark Up 18.0 166.9 Really Low 07:59:39 - 08:27:13 -2544
Anarchist Mountain Observatory 08:13:26 -34.0 Dark Up 18.2 167.1 Really Low 07:59:39 - 08:27:13 -2545
Tonasket 08:13:26 -34.4 Dark Up 18.5 167.0 Really Low 07:59:39 - 08:27:13 -2561
Okanogan 08:13:27 -34.7 Dark Up 18.8 166.9 Really Low 07:59:40 - 08:27:14 -2579
Dunrhomin 08:12:38 -40.2 Dark Down 27.9 180.9 Low 07:58:51 - 08:26:25 -2584
Brewster 08:13:27 -35.0 Dark Up 19.0 166.6 Really Low 07:59:40 - 08:27:14 -2596
CU-SBO 08:12:38 -40.5 Dark Down 28.2 180.8 Low 07:58:51 - 08:26:25 -2598
Manson/Chelan 08:13:29 -35.2 Dark Up 19.2 166.3 Really Low 07:59:42 - 08:27:16 -2615
Wenatchee 08:13:30 -35.7 Dark Up 19.6 166.1 Really Low 07:59:43 - 08:27:17 -2640
PNWRO 08:13:26 -37.0 Dark Up 21.2 167.3 Low 07:59:39 - 08:27:13 -2664
Ellensburg 08:13:30 -36.1 Dark Up 20.0 165.8 Really Low 07:59:43 - 08:27:17 -2664
Victoria 08:13:38 -34.6 Dark Up 18.0 163.2 Really Low 07:59:51 - 08:27:25 -2676
Yakima 08:13:30 -36.5 Dark Up 20.3 165.8 Low 07:59:43 - 08:27:17 -2683
Toppenish/White Swan 08:13:30 -36.7 Dark Up 20.6 165.9 Low 07:59:43 - 08:27:17 -2689
Goldendale 08:13:32 -37.3 Dark Up 21.0 165.5 Low 07:59:45 - 08:27:19 -2726
The Dalles 08:13:33 -37.5 Dark Up 21.2 165.1 Low 07:59:46 - 08:27:20 -2748
Maupin 08:13:32 -37.9 Dark Up 21.6 165.1 Low 07:59:45 - 08:27:19 -2764
Sisters 08:13:34 -38.8 Dark Up 22.4 164.6 Low 07:59:47 - 08:27:21 -2821
Bend 08:13:34 -39.1 Dark Up 22.7 164.8 Low 07:59:47 - 08:27:21 -2826
Oregon Observatory 08:13:34 -39.2 Dark Up 22.8 164.7 Low 07:59:47 - 08:27:21 -2838
North Lake 08:13:32 -39.9 Dark Up 23.5 165.1 Low 07:59:45 - 08:27:19 -2854
Lakeview 08:13:31 -40.9 Dark Up 24.7 165.5 Low 07:59:44 - 08:27:18 -2893
Chiloquin 08:13:36 -40.6 Dark Up 24.0 164.1 Low 07:59:49 - 08:27:23 -2918
Cedarville 08:13:31 -41.5 Dark Up 25.3 165.6 Low 07:59:44 - 08:27:18 -2923
Klamath Falls 08:13:35 -40.9 Dark Up 24.3 164.1 Low 07:59:48 - 08:27:22 -2934
Fall River/Burney 08:13:35 -42.1 Dark Up 25.6 164.4 Low 07:59:48 - 08:27:22 -2986
Susanville 08:13:32 -42.7 Dark Up 26.3 165.0 Low 07:59:45 - 08:27:19 -2998
Gimple 08:13:33 -43.0 Dark Up 26.5 164.8 Low 07:59:46 - 08:27:20 -3020
Reno 08:13:29 -43.5 Dark Up 27.3 165.7 Low 07:59:42 - 08:27:16 -3021
Greenville 08:13:33 -43.0 Dark Up 26.5 164.7 Low 07:59:46 - 08:27:20 -3023
Portola 08:13:31 -43.3 Dark Up 26.9 165.1 Low 07:59:44 - 08:27:18 -3026
Tonopah 08:13:20 -44.8 Dark Down 29.2 168.2 Low 07:59:33 - 08:27:07 -3026
Yerington 08:13:27 -44.0 Dark Down 28.0 166.3 Low 07:59:40 - 08:27:14 -3032
Quincy 08:13:33 -43.2 Dark Up 26.7 164.7 Low 07:59:46 - 08:27:20 -3034
Carson City 08:13:30 -43.9 Dark Up 27.7 165.7 Low 07:59:43 - 08:27:17 -3041
Hawthorne 08:13:25 -44.4 Dark Down 28.5 166.8 Low 07:59:38 - 08:27:12 -3043
Gardnerville 08:13:29 -44.1 Dark Up 27.9 165.7 Low 07:59:42 - 08:27:16 -3053
Indian Springs 08:13:15 -46.1 Dark Down 30.9 169.7 Up 07:59:28 - 08:27:02 -3067
Henderson 08:13:13 -46.5 Dark Down 31.5 170.3 Up 07:59:26 - 08:27:00 -3078
Beatty 08:13:19 -45.9 Dark Down 30.4 168.6 Up 07:59:32 - 08:27:06 -3080
Patrick 08:13:08 -46.9 Dark Down 32.3 171.5 Up 07:59:21 - 08:26:55 -3082
Lee Vining 08:13:27 -45.0 Dark Down 29.0 166.3 Low 07:59:40 - 08:27:14 -3090
Kingman/Dolan Springs 08:13:08 -47.2 Dark Down 32.5 171.2 Up 07:59:21 - 08:26:55 -3101
Bishop 08:13:25 -45.6 Dark Down 29.7 166.9 Low 07:59:38 - 08:27:12 -3103
Laughlin/Bullhead City 08:13:10 -47.3 Dark Down 32.4 170.7 Up 07:59:23 - 08:26:57 -3119
George/Scottsdale 08:13:00 -48.1 Dark Down 34.2 173.5 Up 07:59:13 - 08:26:47 -3127
Mohave Valley 08:13:10 -47.5 Dark Down 32.7 170.7 Up 07:59:23 - 08:26:57 -3135
Lake Havasu City 08:13:09 -47.9 Dark Down 33.1 170.9 Up 07:59:22 - 08:26:56 -3152
Parker 08:13:09 -48.2 Dark Down 33.5 170.9 Up 07:59:22 - 08:26:56 -3173
Idyllwild 08:13:18 -49.0 Dark Down 33.5 168.2 Up 07:59:31 - 08:27:05 -3273
Yuma 08:13:10 -49.7 Dark Down 34.9 170.4 Up 07:59:23 - 08:26:57 -3275
Calipatria 08:13:13 -49.4 Dark Down 34.3 169.4 Up 07:59:26 - 08:27:00 -3276
Wildwood 08:13:26 -48.8 Dark Down 32.8 166.2 Up 07:59:39 - 08:27:13 -3311

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 545361, (2022/04/07 08:11UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 15.32 118
5The Cen       14:06:40.0 -36:22:23  2.1 14.57 133
PPM 262433     14:03:53.1 -22:25:17  6.3  1.77 130
PPM 262574     14:10:03.4 -21:14:22  8.3  0.65 131
PPM 262607     14:11:16.9 -22:05:52  9.9  0.26 132
545361         14:11:05.6 -21:50:20 12.7       132
Positions are for J2000

Event circumstances last updated at 2022/03/16 00:54:26 UT

Marc W. Buie, Southwest Research Institute

RECON