RECON: TNO occultation with 524179

Event between (524179) 01FQ185 and star GA0760:05107624 with event index number of 1591632

Geocentric closest approach at 2022/04/29 08:23:36 UTC

J2000 position of star is 14:59:12.9 -13:31:07
Equinox of date position of star is 15:00:26.2 -13:36:22
Stellar brightness G=13.4, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 155 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=22.6

[RECON map]
TNO is 37.3 AU from the Sun and 36.3 AU from the Earth.
The TNO is moving 23.9 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 157 seconds.
The 1-sigma cross-track error in the shadow position is 1768 km.
The sky-plane scale is 26303.7 km/arcsec.

The TNO has an absolute magnitude Hv=6.9
Diameter=251.2 km assuming a 5% albedo -- 10.5 sec chord
Diameter=102.6 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 524179, (2022/04/29 08:24UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:22.3 -11:16:38  1.0 23.07 175
27Bet Lib      15:18:12.7 -09:27:50  2.6  6.01 152
13Xi 1Lib      14:55:35.8 -11:59:18  5.9  2.00 157
PPM 229576     14:59:56.2 -12:51:24  7.8  0.76 156
PPM 229574     14:59:51.6 -13:47:52  9.5  0.24 155
524179         15:00:26.6 -13:36:24 13.4       155
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 15.0 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:24:13 -21.0 Dark Down 23.5 193.4 Low 08:10:40 - 08:37:45 11937
Kamloops 08:24:51 -24.6 Dark Down 25.8 178.2 Low 08:11:19 - 08:38:24 11609
Kelowna 08:24:47 -25.3 Dark Down 26.6 179.1 Low 08:11:14 - 08:38:19 11589
Peachland 08:24:48 -25.4 Dark Down 26.7 178.8 Low 08:11:15 - 08:38:20 11577
Summerland 08:24:49 -25.6 Dark Down 26.9 178.9 Low 08:11:16 - 08:38:21 11572
Penticton 08:24:47 -25.6 Dark Down 26.9 179.0 Low 08:11:15 - 08:38:20 11571
Oliver 08:24:48 -26.0 Dark Down 27.3 179.0 Low 08:11:15 - 08:38:20 11554
Anarchist Mountain Observatory 08:24:47 -26.1 Dark Down 27.5 179.2 Low 08:11:15 - 08:38:20 11550
Tonasket 08:24:48 -26.5 Dark Down 27.8 179.2 Low 08:11:15 - 08:38:20 11533
Okanogan 08:24:47 -26.8 Dark Down 28.1 179.0 Low 08:11:15 - 08:38:20 11513
Brewster 08:24:48 -27.1 Dark Down 28.4 178.8 Low 08:11:15 - 08:38:20 11494
Manson/Chelan 08:24:50 -27.3 Dark Down 28.6 178.4 Low 08:11:17 - 08:38:22 11476
Wenatchee 08:24:49 -27.8 Dark Down 29.1 178.2 Low 08:11:17 - 08:38:22 11447
Victoria 08:24:59 -26.9 Dark Down 27.8 174.8 Low 08:11:26 - 08:38:31 11436
Ellensburg 08:24:48 -28.2 Dark Down 29.5 177.9 Low 08:11:15 - 08:38:20 11420
PNWRO 08:24:44 -29.1 Dark Down 30.5 179.7 Up 08:11:11 - 08:38:16 11404
Yakima 08:24:49 -28.6 Dark Down 29.9 177.9 Low 08:11:16 - 08:38:21 11398
Toppenish/White Swan 08:24:48 -28.8 Dark Down 30.1 178.1 Up 08:11:16 - 08:38:21 11390
Dunrhomin 08:23:54 -31.7 Dark Down 34.8 195.8 Up 08:10:21 - 08:37:26 11373
CU-SBO 08:23:54 -32.0 Dark Down 35.1 195.7 Up 08:10:22 - 08:37:27 11357
Goldendale 08:24:50 -29.4 Dark Down 30.6 177.6 Up 08:11:17 - 08:38:22 11351
The Dalles 08:24:51 -29.7 Dark Down 30.8 177.2 Up 08:11:18 - 08:38:23 11329
Maupin 08:24:50 -30.1 Dark Down 31.3 177.3 Up 08:11:17 - 08:38:22 11309
Sisters 08:24:50 -31.0 Dark Down 32.1 176.7 Up 08:11:17 - 08:38:22 11247
Bend 08:24:51 -31.2 Dark Down 32.4 177.0 Up 08:11:19 - 08:38:24 11240
Oregon Observatory 08:24:51 -31.4 Dark Down 32.5 176.8 Up 08:11:18 - 08:38:23 11227
North Lake 08:24:48 -32.0 Dark Down 33.2 177.4 Up 08:11:16 - 08:38:21 11202
Lakeview 08:24:46 -33.0 Dark Down 34.3 178.0 Up 08:11:14 - 08:38:19 11152
Chiloquin 08:24:50 -32.7 Dark Down 33.8 176.3 Up 08:11:17 - 08:38:22 11138
Klamath Falls 08:24:50 -33.1 Dark Down 34.2 176.4 Up 08:11:17 - 08:38:22 11119
Cedarville 08:24:44 -33.6 Dark Down 34.9 178.2 Up 08:11:12 - 08:38:17 11116
Fall River/Burney 08:24:49 -34.2 Dark Down 35.4 176.8 Up 08:11:16 - 08:38:21 11056
Susanville 08:24:46 -34.8 Dark Down 36.0 177.6 Up 08:11:14 - 08:38:19 11035
Gimple 08:24:44 -35.1 Dark Down 36.3 177.3 Up 08:11:12 - 08:38:17 11012
Greenville 08:24:48 -35.1 Dark Down 36.3 177.3 Up 08:11:15 - 08:38:20 11010
Portola 08:24:45 -35.4 Dark Down 36.6 177.8 Up 08:11:13 - 08:38:18 11001
Reno 08:24:43 -35.6 Dark Down 36.9 178.6 Up 08:11:10 - 08:38:15 11000
Quincy 08:24:46 -35.3 Dark Down 36.5 177.2 Up 08:11:14 - 08:38:19 10997
Yerington 08:24:39 -36.0 Dark Down 37.5 179.4 Up 08:11:07 - 08:38:12 10981
Carson City 08:24:43 -35.9 Dark Down 37.3 178.6 Up 08:11:10 - 08:38:15 10978
Tonopah 08:24:30 -36.7 Dark Down 38.4 181.7 Up 08:10:58 - 08:38:03 10969
Hawthorne 08:24:38 -36.4 Dark Down 38.0 180.0 Up 08:11:06 - 08:38:11 10964
Gardnerville 08:24:42 -36.1 Dark Down 37.5 178.7 Up 08:11:09 - 08:38:14 10963
Lee Vining 08:24:37 -37.0 Dark Down 38.5 179.4 Up 08:11:05 - 08:38:10 10915
Indian Springs 08:24:27 -37.9 Dark Down 39.8 183.7 Up 08:10:54 - 08:37:59 10908
Beatty 08:24:29 -37.7 Dark Down 39.6 182.3 Up 08:10:57 - 08:38:02 10903
Bishop 08:24:34 -37.5 Dark Down 39.1 180.3 Up 08:11:01 - 08:38:06 10893
Henderson 08:24:22 -38.2 Dark Down 40.3 184.6 Up 08:10:50 - 08:37:55 10889
Patrick 08:24:18 -38.6 Dark Down 40.9 186.0 Up 08:10:45 - 08:37:50 10874
Kingman/Dolan Springs 08:24:18 -38.9 Dark Down 41.1 185.8 Up 08:10:45 - 08:37:50 10854
Laughlin/Bullhead City 08:24:21 -39.0 Dark Down 41.2 185.2 Up 08:10:48 - 08:37:53 10839
Mohave Valley 08:24:18 -39.3 Dark Down 41.4 185.2 Up 08:10:46 - 08:37:51 10820
George/Scottsdale 08:24:09 -39.8 Dark Down 42.3 188.8 Up 08:10:37 - 08:37:42 10805
Lake Havasu City 08:24:18 -39.6 Dark Down 41.8 185.5 Up 08:10:46 - 08:37:51 10799
Parker 08:24:18 -39.9 Dark Down 42.2 185.6 Up 08:10:45 - 08:37:50 10775
Idyllwild 08:24:25 -40.8 Dark Down 42.7 182.5 Up 08:10:53 - 08:37:58 10685
Calipatria 08:24:20 -41.2 Dark Down 43.3 184.1 Up 08:10:47 - 08:37:52 10671
Yuma 08:24:18 -41.4 Dark Down 43.6 185.3 Up 08:10:46 - 08:37:51 10663
Wildwood 08:24:33 -40.8 Dark Down 42.4 180.0 Up 08:11:00 - 08:38:05 10660

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 524179, (2022/04/29 08:24UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 23.07 175
27Bet Lib      15:17:00.3 -09:22:59  2.6  6.01 152
13Xi 1Lib      14:54:22.8 -11:53:54  5.9  2.00 157
PPM 229576     14:58:42.7 -12:46:07  7.8  0.76 156
PPM 229574     14:58:37.8 -13:42:34  9.5  0.24 155
524179         14:59:12.9 -13:31:07 13.4       155
Positions are for J2000

Event circumstances last updated at 2022/03/15 01:01:16 UT

Marc W. Buie, Southwest Research Institute

RECON