RECON: TNO occultation with 523700

Event between (523700) 14GM54 and star GA1060:16247790 with event index number of 2089503

Geocentric closest approach at 2024/06/02 07:37:54 UTC

J2000 position of star is 20:17:49.2 +17:04:52
Equinox of date position of star is 20:18:50.1 +17:09:05
Stellar brightness G=13.2, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 70 degrees from the moon. Moon is 22% illuminated.
TNO apparent brightness V=21.8

[RECON map]
TNO is 28.4 AU from the Sun and 28.0 AU from the Earth.
The TNO is moving 14.8 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 186 seconds.
The 1-sigma cross-track error in the shadow position is 2367 km.
The sky-plane scale is 20306.7 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 15.5 sec chord
Diameter=93.5 km assuming a 30% albedo -- 6.3 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 523700, (2024/06/02 07:38UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:15.9 +45:22:07  1.3 28.63  68
Tarazed        19:47:25.2 +10:40:28  2.7 10.02  78
PPM 138344     20:27:30.1 +17:23:49  6.2  2.06  68
PPM 138084     20:19:41.8 +17:26:23  8.1  0.33  70
PPM 138051     20:18:39.7 +17:10:20 10.6  0.07  70
523700         20:18:56.1 +17:09:30 13.2        69
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 4.8 sigma about the mid-time.
The median site spacing is 30.1 km RECON observability=1.0 and success probability=23.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:42:46 -15.1 AT Down 41.2 119.2 Up 07:27:46 - 07:57:46 -454
Kamloops 07:43:32 -17.0 AT Down 33.5 104.5 Up 07:28:32 - 07:58:32 -710
Kelowna 07:43:31 -17.8 AT Down 34.2 104.8 Up 07:28:31 - 07:58:31 -793
Peachland 07:43:32 -17.9 AT Down 34.1 104.5 Up 07:28:32 - 07:58:32 -806
Summerland 07:43:32 -18.1 Dark Down 34.2 104.4 Up 07:28:32 - 07:58:32 -822
Penticton 07:43:32 -18.1 Dark Down 34.2 104.5 Up 07:28:32 - 07:58:32 -829
Oliver 07:43:32 -18.5 Dark Down 34.3 104.3 Up 07:28:32 - 07:58:32 -866
Anarchist Mountain Observatory 07:43:32 -18.7 Dark Down 34.5 104.3 Up 07:28:32 - 07:58:32 -884
Tonasket 07:43:32 -19.0 Dark Down 34.5 104.1 Up 07:28:32 - 07:58:32 -917
Victoria 07:43:45 -18.9 Dark Down 32.0 100.6 Up 07:28:45 - 07:58:45 -945
Okanogan 07:43:33 -19.3 Dark Down 34.5 103.7 Up 07:28:33 - 07:58:33 -954
Brewster 07:43:34 -19.6 Dark Down 34.4 103.4 Up 07:28:34 - 07:58:34 -983
Manson/Chelan 07:43:35 -19.8 Dark Down 34.3 102.9 Up 07:28:35 - 07:58:35 -1007
Wenatchee 07:43:37 -20.2 Dark Down 34.3 102.5 Up 07:28:37 - 07:58:37 -1059
Ellensburg 07:43:39 -20.6 Dark Down 34.2 102.0 Up 07:28:39 - 07:58:39 -1104
Yakima 07:43:39 -21.0 Dark Down 34.3 101.7 Up 07:28:39 - 07:58:39 -1148
Toppenish/White Swan 07:43:38 -21.3 Dark Down 34.4 101.7 Up 07:28:38 - 07:58:38 -1171
PNWRO 07:43:33 -21.7 Dark Down 35.5 102.7 Up 07:28:33 - 07:58:33 -1205
Goldendale 07:43:40 -21.8 Dark Down 34.3 101.0 Up 07:28:40 - 07:58:40 -1232
The Dalles 07:43:41 -22.0 Dark Down 34.0 100.6 Up 07:28:41 - 07:58:41 -1257
Maupin 07:43:42 -22.4 Dark Down 34.2 100.4 Up 07:28:42 - 07:58:42 -1303
Sisters 07:43:44 -23.3 Dark Down 34.0 99.4 Up 07:28:44 - 07:58:44 -1400
Bend 07:43:44 -23.5 Dark Down 34.2 99.4 Up 07:28:44 - 07:58:44 -1425
Oregon Observatory 07:43:45 -23.7 Dark Down 34.2 99.2 Up 07:28:45 - 07:58:45 -1444
North Lake 07:43:43 -24.4 Dark Down 34.7 99.2 Up 07:28:43 - 07:58:43 -1513
Chiloquin 07:43:46 -25.0 Dark Down 34.1 98.0 Up 07:28:46 - 07:58:46 -1589
Klamath Falls 07:43:46 -25.3 Dark Down 34.2 97.9 Up 07:28:46 - 07:58:46 -1627
Lakeview 07:43:42 -25.4 Dark Down 35.2 98.9 Up 07:28:42 - 07:58:42 -1627
Dunrhomin 07:42:47 -26.6 Dark Down 46.6 109.6 Up 07:27:47 - 07:57:47 -1696
Cedarville 07:43:43 -26.1 Dark Down 35.5 98.6 Up 07:28:43 - 07:58:43 -1699
CU-SBO 07:42:46 -26.9 Dark Down 46.6 109.2 Up 07:27:46 - 07:57:46 -1725
Fall River/Burney 07:43:46 -26.5 Dark Down 34.6 97.3 Up 07:28:46 - 07:58:46 -1756
Susanville 07:43:45 -27.2 Dark Down 35.3 97.4 Up 07:28:45 - 07:58:45 -1823
Greenville 07:43:46 -27.5 Dark Down 35.1 97.0 Up 07:28:46 - 07:58:46 -1854
Gimple 07:43:45 -27.5 Dark Down 35.1 97.1 Up 07:28:45 - 07:58:45 -1854
Quincy 07:43:46 -27.7 Dark Down 35.1 96.9 Up 07:28:46 - 07:58:46 -1876
Portola 07:43:44 -27.8 Dark Down 35.5 97.1 Up 07:28:44 - 07:58:44 -1889
Reno 07:43:42 -28.1 Dark Down 36.0 97.4 Up 07:28:42 - 07:58:42 -1916
Carson City 07:43:42 -28.5 Dark Down 36.1 97.2 Up 07:28:42 - 07:58:42 -1955
Yerington 07:43:39 -28.7 Dark Down 36.6 97.5 Up 07:28:39 - 07:58:39 -1974
Gardnerville 07:43:43 -28.7 Dark Down 36.1 97.0 Up 07:28:43 - 07:58:43 -1982
Hawthorne 07:43:38 -29.2 Dark Down 37.0 97.5 Up 07:28:38 - 07:58:38 -2023
Tonopah 07:43:34 -29.7 Dark Down 38.2 98.1 Up 07:28:34 - 07:58:34 -2067
Lee Vining 07:43:40 -29.7 Dark Down 36.7 96.7 Up 07:28:40 - 07:58:40 -2087
Bishop 07:43:37 -30.3 Dark Down 37.4 96.8 Up 07:28:37 - 07:58:37 -2150
Beatty 07:43:33 -30.8 Dark Down 38.7 97.5 Up 07:28:33 - 07:58:33 -2191
Indian Springs 07:43:28 -31.2 Dark Down 39.6 98.0 Up 07:28:28 - 07:58:28 -2220
Henderson 07:43:25 -31.7 Dark Down 40.2 98.0 Up 07:28:25 - 07:58:25 -2273
Patrick 07:43:21 -32.3 Dark Down 41.2 98.2 Up 07:28:21 - 07:58:21 -2333
Kingman/Dolan Springs 07:43:21 -32.5 Dark Down 41.0 97.9 Up 07:28:21 - 07:58:21 -2359
Laughlin/Bullhead City 07:43:23 -32.5 Dark Down 40.6 97.5 Up 07:28:23 - 07:58:23 -2366
Mohave Valley 07:43:24 -32.8 Dark Down 40.7 97.3 Up 07:28:24 - 07:58:24 -2396
Lake Havasu City 07:43:21 -33.2 Dark Down 40.9 97.1 Up 07:28:21 - 07:58:21 -2438
Parker 07:43:21 -33.6 Dark Down 41.0 96.8 Up 07:28:21 - 07:58:21 -2477
George/Scottsdale 07:43:12 -33.9 Dark Down 43.0 98.0 Up 07:28:12 - 07:58:12 -2500
Wildwood 07:43:39 -33.6 Dark Down 37.5 94.1 Up 07:28:39 - 07:58:39 -2513
Idyllwild 07:43:31 -34.0 Dark Down 39.1 95.0 Up 07:28:31 - 07:58:31 -2541
Calipatria 07:43:27 -34.6 Dark Down 40.1 95.2 Up 07:28:27 - 07:58:27 -2600
Yuma 07:43:23 -35.0 Dark Down 40.9 95.4 Up 07:28:23 - 07:58:23 -2640

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 523700, (2024/06/02 07:38UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 28.63  68
Tarazed        19:46:15.6 +10:36:48  2.7 10.02  78
PPM 138344     20:26:23.2 +17:18:56  6.2  2.06  68
PPM 138084     20:18:35.1 +17:21:43  8.1  0.33  70
PPM 138051     20:17:32.9 +17:05:43 10.6  0.07  70
523700         20:17:49.2 +17:04:52 13.2        70
Positions are for J2000

Event circumstances last updated at 2022/03/26 23:43:14 UT

Marc W. Buie, Southwest Research Institute

RECON