RECON: TNO occultation with 523760

Event between (523760) 14WQ509 and star GA1200:03063109 with event index number of 2362284

Geocentric closest approach at 2023/12/10 12:12:07 UTC

J2000 position of star is 07:43:37.2 +30:54:59
Equinox of date position of star is 07:45:00.7 +30:51:45
Stellar brightness G=14.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 115 degrees from the moon. Moon is 7% illuminated.
TNO apparent brightness V=22.3

[RECON map]
TNO is 43.0 AU from the Sun and 42.2 AU from the Earth.
The TNO is moving 21.0 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 379 seconds.
The 1-sigma cross-track error in the shadow position is 2475 km.
The sky-plane scale is 30631.4 km/arcsec.

The TNO has an absolute magnitude Hv=5.9
Diameter=403.7 km assuming a 5% albedo -- 19.3 sec chord
Diameter=164.8 km assuming a 30% albedo -- 7.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 523760, (2023/12/10 12:12UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:46.8 +27:57:59  1.1  2.91 114
PPM 073009     07:41:25.7 +31:57:10  6.4  1.35 116
PPM 073076     07:46:09.0 +31:03:17  8.0  0.29 115
PPM 073073     07:46:01.7 +30:55:04 10.0  0.20 115
523760         07:45:08.0 +30:51:28 14.5       115
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 2.4 sigma about the mid-time.
The median site spacing is 23.4 km RECON observability=1.0 and success probability=4.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 12:10:53 -24.7 Dark Down 54.1 249.7 Up 11:55:53 - 12:25:53 7402
Kamloops 12:11:22 -33.7 Dark Down 62.6 233.6 Up 11:56:22 - 12:26:22 6767
Kelowna 12:11:17 -33.1 Dark Down 62.6 236.1 Up 11:56:17 - 12:26:17 6730
Peachland 12:11:16 -33.3 Dark Down 62.9 235.9 Up 11:56:16 - 12:26:16 6710
Summerland 12:11:17 -33.3 Dark Down 62.9 236.3 Up 11:56:17 - 12:26:17 6701
Penticton 12:11:16 -33.2 Dark Down 62.9 236.5 Up 11:56:16 - 12:26:16 6699
Oliver 12:11:14 -33.2 Dark Down 63.1 237.1 Up 11:56:14 - 12:26:14 6669
Anarchist Mountain Observatory 12:11:14 -33.1 Dark Down 63.0 237.7 Up 11:56:14 - 12:26:14 6662
Tonasket 12:11:13 -33.2 Dark Down 63.3 238.1 Up 11:56:13 - 12:26:13 6633
Okanogan 12:11:13 -33.3 Dark Down 63.5 238.4 Up 11:56:13 - 12:26:13 6599
Brewster 12:11:12 -33.4 Dark Down 63.8 238.6 Up 11:56:12 - 12:26:12 6568
Manson/Chelan 12:11:13 -33.7 Dark Down 64.1 238.4 Up 11:56:13 - 12:26:13 6537
Dunrhomin 12:10:06 -22.5 Dark Up 56.1 266.9 Up 11:55:06 - 12:25:06 6525
Wenatchee 12:11:11 -33.8 Dark Down 64.4 239.0 Up 11:56:11 - 12:26:11 6489
Victoria 12:11:23 -35.8 Dark Down 65.5 232.3 Up 11:56:23 - 12:26:23 6475
Ellensburg 12:11:10 -34.0 Dark Down 64.8 239.4 Up 11:56:10 - 12:26:10 6445
PNWRO 12:11:03 -32.9 Dark Down 64.3 243.5 Up 11:56:03 - 12:26:03 6422
Yakima 12:11:09 -34.0 Dark Down 65.0 240.1 Up 11:56:09 - 12:26:09 6409
Toppenish/White Swan 12:11:08 -33.9 Dark Down 65.0 240.8 Up 11:56:08 - 12:26:08 6397
Goldendale 12:11:08 -34.2 Dark Down 65.5 241.2 Up 11:56:08 - 12:26:08 6332
The Dalles 12:11:08 -34.5 Dark Down 65.9 241.1 Up 11:56:08 - 12:26:08 6298
Maupin 12:11:06 -34.4 Dark Down 66.0 242.1 Up 11:56:06 - 12:26:06 6265
Sisters 12:11:06 -34.8 Dark Down 66.7 243.1 Up 11:56:06 - 12:26:06 6168
Bend 12:11:04 -34.6 Dark Down 66.7 244.0 Up 11:56:04 - 12:26:04 6157
Oregon Observatory 12:11:04 -34.7 Dark Down 66.8 244.2 Up 11:56:04 - 12:26:04 6136
North Lake 12:11:01 -34.3 Dark Down 66.7 246.3 Up 11:56:01 - 12:26:01 6100
Lakeview 12:10:55 -33.9 Dark Down 66.8 249.3 Up 11:55:55 - 12:25:55 6026
Chiloquin 12:11:01 -35.0 Dark Down 67.7 246.4 Up 11:56:01 - 12:26:01 6000
Cedarville 12:10:52 -33.8 Dark Down 66.9 250.9 Up 11:55:52 - 12:25:52 5974
Klamath Falls 12:11:00 -35.0 Dark Down 67.7 247.3 Up 11:56:00 - 12:26:00 5972
Fall River/Burney 12:10:56 -34.7 Dark Down 67.9 250.5 Up 11:55:56 - 12:25:56 5880
Susanville 12:10:51 -34.1 Dark Down 67.6 252.8 Up 11:55:51 - 12:25:51 5853
Gimple 12:10:52 -34.3 Dark Down 67.8 253.2 Up 11:55:52 - 12:25:52 5819
Greenville 12:10:52 -34.3 Dark Down 67.9 253.1 Up 11:55:52 - 12:25:52 5815
Reno 12:10:45 -33.5 Dark Down 67.2 255.8 Up 11:55:45 - 12:25:45 5808
Portola 12:10:49 -34.0 Dark Down 67.6 254.5 Up 11:55:49 - 12:25:49 5805
Quincy 12:10:51 -34.3 Dark Down 67.9 253.6 Up 11:55:51 - 12:25:51 5797
Yerington 12:10:42 -32.9 Dark Down 66.9 257.7 Up 11:55:42 - 12:25:42 5785
Tonopah 12:10:33 -31.4 Dark Down 65.6 261.6 Up 11:55:33 - 12:25:33 5785
Carson City 12:10:45 -33.4 Dark Down 67.3 256.6 Up 11:55:45 - 12:25:45 5776
Hawthorne 12:10:40 -32.5 Dark Down 66.6 259.3 Up 11:55:40 - 12:25:40 5766
Gardnerville 12:10:44 -33.4 Dark Down 67.3 257.3 Up 11:55:44 - 12:25:44 5756
Indian Springs 12:10:24 -30.0 Dark Down 64.5 266.0 Up 11:55:24 - 12:25:24 5719
Henderson 12:10:20 -29.4 Dark Down 64.0 267.6 Up 11:55:20 - 12:25:20 5703
Beatty 12:10:28 -30.9 Dark Down 65.4 264.5 Up 11:55:28 - 12:25:28 5700
Patrick 12:10:15 -28.4 Dark Down 63.2 269.5 Up 11:55:15 - 12:25:15 5698
Lee Vining 12:10:39 -32.8 Dark Down 67.0 260.1 Up 11:55:39 - 12:25:39 5693
Bishop 12:10:35 -32.2 Dark Down 66.6 262.2 Up 11:55:35 - 12:25:35 5669
Kingman/Dolan Springs 12:10:14 -28.5 Dark Down 63.3 269.8 Up 11:55:14 - 12:25:14 5669
Laughlin/Bullhead City 12:10:16 -28.9 Dark Down 63.7 269.6 Up 11:55:16 - 12:25:16 5643
George/Scottsdale 12:10:04 -26.5 Dark Up 61.5 273.8 Up 11:55:04 - 12:25:04 5642
Mohave Valley 12:10:16 -28.9 Dark Down 63.7 270.1 Up 11:55:16 - 12:25:16 5618
Lake Havasu City 12:10:13 -28.6 Dark Down 63.5 271.1 Up 11:55:13 - 12:25:13 5594
Parker 12:10:12 -28.6 Dark Down 63.5 271.8 Up 11:55:12 - 12:25:12 5563
Yuma 12:10:09 -28.6 Dark Down 63.7 274.5 Up 11:55:09 - 12:25:09 5414
Idyllwild 12:10:18 -30.5 Dark Down 65.5 271.4 Up 11:55:18 - 12:25:18 5411
Calipatria 12:10:14 -29.4 Dark Down 64.5 273.3 Up 11:55:14 - 12:25:14 5411
Wildwood 12:10:26 -32.0 Dark Down 67.0 269.6 Up 11:55:26 - 12:25:26 5357

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 523760, (2023/12/10 12:12UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1  2.91 114
PPM 073009     07:39:54.0 +32:00:34  6.4  1.35 116
PPM 073076     07:44:38.1 +31:06:50  8.0  0.29 115
PPM 073073     07:44:30.9 +30:58:37 10.0  0.20 115
523760         07:43:37.2 +30:54:59 14.5       115
Positions are for J2000

Event circumstances last updated at 2022/01/09 00:03:58 UT

Marc W. Buie, Southwest Research Institute

RECON