RECON: TNO occultation with 524612

Event between (524612) 03QA112 and star GA0920:00019348 with event index number of 1592779

Geocentric closest approach at 2024/09/18 05:50:53 UTC

J2000 position of star is 00:12:24.5 +02:15:40
Equinox of date position of star is 00:13:33.0 +02:23:05
Stellar brightness G=14.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 6 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=23.1

[RECON map]
TNO is 47.7 AU from the Sun and 46.7 AU from the Earth.
The TNO is moving 25.5 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 196 seconds.
The 1-sigma cross-track error in the shadow position is 4462 km.
The sky-plane scale is 33890.1 km/arcsec.

The TNO has an absolute magnitude Hv=6.3
Diameter=331.1 km assuming a 5% albedo -- 13.0 sec chord
Diameter=135.2 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 524612, (2024/09/18 05:51UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:59:00.6 -29:29:26  1.2 36.55  31
Algenib        00:14:30.7 +15:19:15  2.8 12.92  18
44 Psc         00:26:40.3 +02:04:35  5.8  3.26   9
PPM 143221     00:11:56.8 +02:11:35  7.7  0.48   6
PPM 143220     00:11:55.3 +02:26:17  9.0  0.44   6
PPM 143246     00:13:30.5 +02:28:05 10.9  0.08   6
524612         00:13:40.6 +02:23:55 14.7         7
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 18.4 km RECON observability=1.0 and success probability=4.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 05:51:20 -31.4 Dark Up 32.0 133.5 Up 05:36:20 - 06:06:20 8066
Victoria 05:51:33 -31.8 Dark Up 31.9 129.4 Up 05:36:33 - 06:06:33 8021
Peachland 05:51:22 -32.3 Dark Up 32.9 133.7 Up 05:36:22 - 06:06:22 8006
Kelowna 05:51:21 -32.3 Dark Up 33.0 134.1 Up 05:36:21 - 06:06:21 8005
Summerland 05:51:22 -32.5 Dark Up 33.0 133.8 Up 05:36:22 - 06:06:22 7996
Penticton 05:51:22 -32.6 Dark Up 33.1 133.9 Up 05:36:22 - 06:06:22 7990
Oliver 05:51:23 -32.9 Dark Up 33.4 133.7 Up 05:36:23 - 06:06:23 7972
Anarchist Mountain Observatory 05:51:23 -33.1 Dark Up 33.6 133.8 Up 05:36:23 - 06:06:23 7959
Tonasket 05:51:24 -33.3 Dark Up 33.8 133.6 Up 05:36:24 - 06:06:24 7943
Okanogan 05:51:25 -33.5 Dark Up 33.9 133.3 Up 05:36:25 - 06:06:25 7929
Brewster 05:51:26 -33.6 Dark Up 34.0 132.9 Up 05:36:26 - 06:06:26 7919
Manson/Chelan 05:51:28 -33.7 Dark Up 34.0 132.5 Up 05:36:28 - 06:06:28 7916
Wenatchee 05:51:30 -34.0 Dark Up 34.2 132.0 Up 05:36:30 - 06:06:30 7893
Ellensburg 05:51:31 -34.2 Dark Up 34.4 131.6 Up 05:36:31 - 06:06:31 7876
Yakima 05:51:33 -34.5 Dark Up 34.7 131.4 Up 05:36:33 - 06:06:33 7853
Toppenish/White Swan 05:51:33 -34.8 Dark Up 34.9 131.5 Up 05:36:33 - 06:06:33 7837
Sleaford 05:50:46 -34.4 Dark Up 36.4 150.1 Up 05:35:46 - 06:05:46 7818
Goldendale 05:51:35 -35.0 Dark Up 35.0 130.7 Up 05:36:35 - 06:06:35 7815
The Dalles 05:51:37 -35.0 Dark Up 35.0 130.2 Up 05:36:37 - 06:06:37 7811
Maupin 05:51:38 -35.4 Dark Up 35.3 130.1 Up 05:36:38 - 06:06:38 7784
PNWRO 05:51:31 -35.7 Dark Up 35.9 132.8 Up 05:36:31 - 06:06:31 7781
Sisters 05:51:41 -35.8 Dark Up 35.6 129.2 Up 05:36:41 - 06:06:41 7744
Bend 05:51:42 -36.1 Dark Up 35.9 129.3 Up 05:36:42 - 06:06:42 7724
Oregon Observatory 05:51:42 -36.2 Dark Up 36.0 129.1 Up 05:36:42 - 06:06:42 7717
North Lake 05:51:43 -36.9 Dark Up 36.7 129.3 Up 05:36:43 - 06:06:43 7665
Chiloquin 05:51:47 -37.0 Dark Up 36.6 127.9 Up 05:36:47 - 06:06:47 7646
Klamath Falls 05:51:48 -37.3 Dark Up 36.8 127.8 Up 05:36:48 - 06:06:48 7623
Lakeview 05:51:45 -38.0 Dark Up 37.7 129.2 Up 05:36:45 - 06:06:45 7586
Cedarville 05:51:46 -38.6 Dark Up 38.2 129.0 Up 05:36:46 - 06:06:46 7539
Fall River/Burney 05:51:51 -38.4 Dark Up 37.8 127.5 Up 05:36:51 - 06:06:51 7539
Susanville 05:51:51 -39.2 Dark Up 38.6 127.8 Up 05:36:51 - 06:06:51 7479
Greenville 05:51:52 -39.3 Dark Up 38.6 127.4 Up 05:36:52 - 06:06:52 7468
Gimple 05:51:52 -39.3 Dark Up 38.6 127.5 Up 05:36:52 - 06:06:52 7466
Quincy 05:51:53 -39.4 Dark Up 38.7 127.2 Up 05:36:53 - 06:06:53 7455
Portola 05:51:52 -39.8 Dark Up 39.1 127.6 Up 05:36:52 - 06:06:52 7435
Reno 05:51:51 -40.3 Dark Up 39.6 128.1 Up 05:36:51 - 06:06:51 7400
Carson City 05:51:52 -40.6 Dark Up 39.9 127.9 Up 05:36:52 - 06:06:52 7375
Gardnerville 05:51:52 -40.8 Dark Up 40.1 127.8 Up 05:36:52 - 06:06:52 7357
Yerington 05:51:51 -41.0 Dark Up 40.4 128.5 Up 05:36:51 - 06:06:51 7345
Hawthorne 05:51:51 -41.7 Dark Up 41.0 128.7 Up 05:36:51 - 06:06:51 7299
Lee Vining 05:51:54 -41.8 Dark Up 41.1 127.8 Up 05:36:54 - 06:06:54 7274
Tonopah 05:51:49 -42.7 Dark Up 42.1 129.9 Up 05:36:49 - 06:06:49 7229
Bishop 05:51:53 -42.7 Dark Up 41.9 128.1 Up 05:36:53 - 06:06:53 7212
Beatty 05:51:50 -43.9 Dark Up 43.2 129.5 Up 05:36:50 - 06:06:50 7134
Indian Springs 05:51:48 -44.6 Dark Up 44.0 130.5 Up 05:36:48 - 06:06:48 7080
Dunrhomin 05:51:11 -45.6 Dark Up 46.8 145.5 Up 05:36:11 - 06:06:11 7047
CU-SBO 05:51:11 -45.8 Dark Up 46.9 145.3 Up 05:36:11 - 06:06:11 7032
Henderson 05:51:48 -45.4 Dark Up 44.8 130.8 Up 05:36:48 - 06:06:48 7021
Wildwood 05:52:03 -45.0 Dark Up 43.7 125.6 Up 05:37:03 - 06:07:03 6978
Laughlin/Bullhead City 05:51:49 -46.3 Dark Up 45.6 130.6 Up 05:36:49 - 06:06:49 6944
Patrick 05:51:46 -46.5 Dark Up 45.9 131.6 Up 05:36:46 - 06:06:46 6942
Kingman/Dolan Springs 05:51:47 -46.5 Dark Up 45.9 131.2 Up 05:36:47 - 06:06:47 6931
Mohave Valley 05:51:50 -46.5 Dark Up 45.8 130.4 Up 05:36:50 - 06:06:50 6923
Idyllwild 05:51:58 -46.3 Dark Up 45.2 127.2 Up 05:36:58 - 06:06:58 6898
Lake Havasu City 05:51:50 -47.0 Dark Up 46.2 130.4 Up 05:36:50 - 06:06:50 6886
Parker 05:51:51 -47.3 Dark Up 46.5 130.2 Up 05:36:51 - 06:06:51 6858
Calipatria 05:51:57 -47.4 Dark Up 46.3 128.0 Up 05:36:57 - 06:06:57 6816
Yuma 05:51:55 -48.2 Dark Up 47.2 128.6 Up 05:36:55 - 06:06:55 6756
George/Scottsdale 05:51:45 -48.8 Dark Up 48.3 132.6 Up 05:36:45 - 06:06:45 6753

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 524612, (2024/09/18 05:51UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 36.55  31
Algenib        00:13:14.2 +15:11:01  2.8 12.92  18
44 Psc         00:25:24.2 +01:56:22  5.8  3.26   9
PPM 143221     00:10:40.7 +02:03:21  7.7  0.48   6
PPM 143220     00:10:39.3 +02:18:02  9.0  0.44   6
PPM 143246     00:12:14.4 +02:19:50 10.9  0.08   6
524612         00:12:24.5 +02:15:40 14.7         6
Positions are for J2000

Event circumstances last updated at 2022/03/29 23:16:36 UT

Marc W. Buie, Southwest Research Institute

RECON