RECON: TNO occultation with 523740

Event between (523740) 14TV85 and star GA0760:04584511 with event index number of 2324220

Geocentric closest approach at 2023/02/18 11:19:47 UTC

J2000 position of star is 12:00:32.0 -13:36:48
Equinox of date position of star is 12:01:40.8 -13:44:16
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 116 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=21.3

[RECON map]
TNO is 14.8 AU from the Sun and 14.0 AU from the Earth.
The TNO is moving 15.6 km/sec on the sky relative to the star, or, 5.5 arcsec/hr.
The 1-sigma error in the time of the event is 45 seconds.
The 1-sigma cross-track error in the shadow position is 553 km.
The sky-plane scale is 10154.6 km/arcsec.

The TNO has an absolute magnitude Hv=9.5
Diameter=77.3 km assuming a 5% albedo -- 5.0 sec chord
Diameter=31.5 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523740, (2023/02/18 11:19UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:24.9 -11:16:53  1.0 20.81 100
4Gam Crv       12:17:00.0 -17:40:13  2.6  5.38 111
PPM 225013     11:52:32.4 -12:18:58  6.3  2.65 119
PPM 225149     11:58:07.3 -13:53:03  6.9  0.88 117
PPM 225232     12:01:30.4 -13:39:29  9.3  0.10 116
523740         12:01:43.2 -13:44:32 17.0       116
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 15.4 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 11:18:52 -27.2 Dark Down 18.8 212.8 Really Low 11:14:38 - 11:23:06 4346
Kamloops 11:19:45 -35.9 Dark Down 23.9 198.8 Low 11:15:31 - 11:23:59 4200
Kelowna 11:19:39 -35.8 Dark Down 24.5 199.8 Low 11:15:25 - 11:23:53 4172
Peachland 11:19:41 -36.0 Dark Down 24.6 199.5 Low 11:15:27 - 11:23:55 4165
Summerland 11:19:40 -36.0 Dark Down 24.8 199.6 Low 11:15:26 - 11:23:54 4159
Penticton 11:19:39 -36.0 Dark Down 24.8 199.7 Low 11:15:25 - 11:23:53 4157
Oliver 11:19:38 -36.2 Dark Down 25.1 199.8 Low 11:15:24 - 11:23:52 4141
Anarchist Mountain Observatory 11:19:37 -36.1 Dark Down 25.3 200.0 Low 11:15:23 - 11:23:51 4135
Tonasket 11:19:37 -36.3 Dark Down 25.6 200.0 Low 11:15:23 - 11:23:51 4120
Okanogan 11:19:36 -36.6 Dark Down 25.9 199.9 Low 11:15:22 - 11:23:50 4103
Brewster 11:19:37 -36.8 Dark Down 26.2 199.7 Low 11:15:23 - 11:23:51 4088
Manson/Chelan 11:19:38 -37.1 Dark Down 26.5 199.4 Low 11:15:24 - 11:23:52 4075
Victoria 11:19:54 -38.7 Dark Down 26.5 195.9 Low 11:15:40 - 11:24:08 4073
Wenatchee 11:19:38 -37.4 Dark Down 27.0 199.3 Low 11:15:24 - 11:23:52 4051
Ellensburg 11:19:38 -37.8 Dark Down 27.4 199.1 Low 11:15:24 - 11:23:52 4029
Yakima 11:19:37 -38.0 Dark Down 27.8 199.2 Low 11:15:23 - 11:23:51 4008
Toppenish/White Swan 11:19:36 -38.0 Dark Down 28.0 199.4 Low 11:15:22 - 11:23:50 3999
PNWRO 11:19:28 -37.2 Dark Down 28.0 201.0 Low 11:15:14 - 11:23:42 3995
Goldendale 11:19:37 -38.5 Dark Down 28.6 199.0 Low 11:15:23 - 11:23:51 3967
The Dalles 11:19:37 -38.8 Dark Down 28.9 198.7 Low 11:15:23 - 11:23:51 3951
Maupin 11:19:36 -38.9 Dark Down 29.3 198.8 Low 11:15:22 - 11:23:50 3931
Sisters 11:19:37 -39.6 Dark Down 30.2 198.5 Up 11:15:23 - 11:23:51 3880
Bend 11:19:35 -39.6 Dark Down 30.4 198.8 Up 11:15:21 - 11:23:49 3869
Oregon Observatory 11:19:36 -39.7 Dark Down 30.6 198.7 Up 11:15:22 - 11:23:50 3859
North Lake 11:19:31 -39.7 Dark Down 31.0 199.4 Up 11:15:17 - 11:23:45 3829
Chiloquin 11:19:35 -40.6 Dark Down 31.9 198.5 Up 11:15:21 - 11:23:49 3781
Lakeview 11:19:27 -39.7 Dark Down 31.9 200.2 Up 11:15:13 - 11:23:41 3775
Dunrhomin 11:18:09 -29.6 Dark Down 28.3 216.3 Low 11:13:55 - 11:22:23 3774
Klamath Falls 11:19:33 -40.7 Dark Down 32.2 198.6 Up 11:15:19 - 11:23:47 3762
CU-SBO 11:18:09 -29.7 Dark Down 28.6 216.3 Low 11:13:55 - 11:22:23 3759
Cedarville 11:19:24 -39.9 Dark Down 32.5 200.5 Up 11:15:10 - 11:23:38 3739
Fall River/Burney 11:19:30 -40.9 Dark Down 33.2 199.3 Up 11:15:16 - 11:23:44 3697
Susanville 11:19:24 -40.6 Dark Down 33.7 200.2 Up 11:15:10 - 11:23:38 3668
Gimple 11:19:25 -40.9 Dark Down 34.0 200.1 Up 11:15:11 - 11:23:39 3649
Greenville 11:19:25 -41.0 Dark Down 34.0 200.0 Up 11:15:11 - 11:23:39 3648
Quincy 11:19:25 -41.0 Dark Down 34.2 200.0 Up 11:15:11 - 11:23:39 3636
Portola 11:19:22 -40.7 Dark Down 34.2 200.6 Up 11:15:08 - 11:23:36 3633
Reno 11:19:18 -40.4 Dark Down 34.2 201.4 Up 11:15:04 - 11:23:32 3624
Carson City 11:19:17 -40.5 Dark Down 34.6 201.5 Up 11:15:03 - 11:23:31 3602
Yerington 11:19:13 -40.1 Dark Down 34.6 202.2 Up 11:14:59 - 11:23:27 3596
Gardnerville 11:19:16 -40.6 Dark Down 34.8 201.6 Up 11:15:02 - 11:23:30 3587
Hawthorne 11:19:10 -39.9 Dark Down 34.9 202.9 Up 11:14:56 - 11:23:24 3573
Tonopah 11:19:01 -39.0 Dark Down 34.8 204.6 Up 11:14:47 - 11:23:15 3558
Lee Vining 11:19:11 -40.4 Dark Down 35.5 202.5 Up 11:14:57 - 11:23:25 3532
Bishop 11:19:05 -40.1 Dark Down 35.9 203.5 Up 11:14:51 - 11:23:19 3501
Beatty 11:18:57 -39.0 Dark Down 35.7 205.4 Up 11:14:43 - 11:23:11 3487
Indian Springs 11:18:50 -38.3 Dark Down 35.7 206.7 Up 11:14:36 - 11:23:04 3476
Henderson 11:18:46 -37.9 Dark Down 35.9 207.6 Up 11:14:32 - 11:23:00 3446
Patrick 11:18:38 -37.2 Dark Down 36.0 209.0 Up 11:14:24 - 11:22:52 3414
Kingman/Dolan Springs 11:18:38 -37.4 Dark Down 36.3 208.9 Up 11:14:24 - 11:22:52 3398
Laughlin/Bullhead City 11:18:41 -37.8 Dark Down 36.5 208.4 Up 11:14:27 - 11:22:55 3391
Mohave Valley 11:18:40 -37.9 Dark Down 36.8 208.5 Up 11:14:26 - 11:22:54 3373
Lake Havasu City 11:18:37 -37.8 Dark Down 37.0 208.9 Up 11:14:23 - 11:22:51 3348
Parker 11:18:36 -37.8 Dark Down 37.3 209.0 Up 11:14:22 - 11:22:50 3324
George/Scottsdale 11:18:22 -36.0 Dark Down 36.7 211.8 Up 11:14:08 - 11:22:36 3315
Wildwood 11:19:00 -41.2 Dark Down 38.9 204.2 Up 11:14:46 - 11:23:14 3279
Idyllwild 11:18:48 -39.9 Dark Down 38.6 206.5 Up 11:14:34 - 11:23:02 3274
Calipatria 11:18:41 -39.1 Dark Down 38.7 208.0 Up 11:14:27 - 11:22:55 3241
Yuma 11:18:35 -38.4 Dark Down 38.7 209.2 Up 11:14:21 - 11:22:49 3219

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 523740, (2023/02/18 11:19UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 20.81 100
4Gam Crv       12:15:48.1 -17:32:30  2.6  5.38 111
PPM 225013     11:51:21.5 -12:11:15  6.3  2.65 119
PPM 225149     11:56:56.3 -13:45:20  6.9  0.88 117
PPM 225232     12:00:19.2 -13:31:45  9.3  0.10 116
523740         12:00:32.0 -13:36:48 17.0       116
Positions are for J2000

Event circumstances last updated at 2022/05/03 01:02:11 UT

Marc W. Buie, Southwest Research Institute

RECON