RECON: TNO occultation with 523653

Event between (523653) 11OA60 and star GA0700:34413659 with event index number of 2625681

Geocentric closest approach at 2024/09/06 04:05:36 UTC

J2000 position of star is 20:58:28.8 -18:34:39
Equinox of date position of star is 20:59:50.1 -18:29:01
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 114 degrees from the moon. Moon is 8% illuminated.
Apparent brightness V=20.6

[RECON map]
Object is 36.2 AU from the Sun and 35.4 AU from the Earth.
Apparent velocity is 20.1 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 70 seconds.
The 1-sigma cross-track error in the shadow position is 1293 km.
The sky-plane scale is 25653.3 km/arcsec.

The object has an absolute magnitude Hv=5.0
Diameter=578.1 km assuming a 5% albedo -- 30.0 sec chord
Diameter=236.0 km assuming a 30% albedo -- 12.2 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 523653, (2024/09/06 04:05UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:59:00.5 -29:29:27  1.2 29.24 132
38Zet Sgr      19:04:10.8 -29:50:34  2.7 28.62  86
19 Cap         20:56:11.3 -17:49:40  5.4  1.09 113
PPM 238177     21:00:26.1 -18:49:11  8.2  0.36 114
PPM 238161     20:59:36.8 -18:34:40  9.5  0.12 114
523653         20:59:52.5 -18:28:50 14.9       114
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 16.1 km RECON observability=0.7 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)
Kamloops 04:05:21 -14.1 AT Down 16.5 152.4 Really Low 03:59:02 - 04:11:40 1940
Victoria 04:05:36 -13.4 AT Down 17.5 149.3 Really Low 03:59:17 - 04:11:55 1917
Peachland 04:05:22 -14.9 AT Down 17.5 152.9 Really Low 03:59:03 - 04:11:41 1908
Kelowna 04:05:20 -15.0 AT Down 17.5 153.2 Really Low 03:59:01 - 04:11:39 1907
Summerland 04:05:22 -15.0 AT Down 17.7 152.9 Really Low 03:59:03 - 04:11:41 1903
Penticton 04:05:22 -15.1 AT Down 17.8 153.0 Really Low 03:59:03 - 04:11:41 1899
Oliver 04:05:22 -15.3 AT Down 18.1 153.0 Really Low 03:59:03 - 04:11:41 1889
Anarchist Mountain Observatory 04:05:22 -15.5 AT Down 18.3 153.2 Really Low 03:59:03 - 04:11:41 1883
Okanogan 04:05:25 -15.7 AT Down 18.8 152.9 Really Low 03:59:06 - 04:11:44 1866
Brewster 04:05:26 -15.7 AT Down 19.0 152.6 Really Low 03:59:07 - 04:11:45 1860
Manson/Chelan 04:05:27 -15.6 AT Down 19.1 152.2 Really Low 03:59:08 - 04:11:46 1859
Wenatchee 04:05:29 -15.7 AT Down 19.4 152.0 Really Low 03:59:10 - 04:11:48 1846
Ellensburg 04:05:31 -15.8 AT Down 19.7 151.7 Really Low 03:59:12 - 04:11:50 1836
Yakima 04:05:33 -16.0 AT Down 20.1 151.7 Low 03:59:14 - 04:11:52 1823
Toppenish/White Swan 04:05:33 -16.2 AT Down 20.3 151.8 Low 03:59:14 - 04:11:52 1814
The Dalles 04:05:37 -16.0 AT Down 20.8 150.9 Low 03:59:18 - 04:11:56 1798
Maupin 04:05:38 -16.3 AT Down 21.2 150.9 Low 03:59:19 - 04:11:57 1782
PNWRO 04:05:29 -17.2 AT Down 21.1 153.1 Low 03:59:10 - 04:11:48 1781
Sisters 04:05:42 -16.4 AT Down 21.8 150.3 Low 03:59:23 - 04:12:01 1757
Sleaford 04:04:32 -20.5 Dark Down 18.3 166.4 Really Low 03:58:13 - 04:10:51 1752
Bend 04:05:41 -16.7 AT Down 22.1 150.5 Low 03:59:22 - 04:12:00 1745
Oregon Observatory 04:05:42 -16.7 AT Down 22.2 150.4 Low 03:59:23 - 04:12:01 1740
Chiloquin 04:05:48 -17.0 AT Down 23.2 149.7 Low 03:59:29 - 04:12:07 1695
Klamath Falls 04:05:49 -17.2 AT Down 23.5 149.7 Low 03:59:30 - 04:12:08 1680
Cedarville 04:05:44 -18.6 Dark Down 24.7 151.1 Low 03:59:25 - 04:12:03 1629
Fall River/Burney 04:05:50 -18.0 AT Down 24.7 149.8 Low 03:59:31 - 04:12:09 1625
Greenville 04:05:51 -18.7 Dark Down 25.6 150.0 Low 03:59:32 - 04:12:10 1580
Gimple 04:05:51 -18.7 Dark Down 25.6 150.1 Low 03:59:32 - 04:12:10 1578
Quincy 04:05:51 -18.8 Dark Down 25.8 150.0 Low 03:59:32 - 04:12:10 1570
Portola 04:05:50 -19.2 Dark Down 26.1 150.4 Low 03:59:31 - 04:12:09 1558
Reno 04:05:49 -19.7 Dark Down 26.6 151.0 Low 03:59:30 - 04:12:08 1536
Carson City 04:05:49 -19.9 Dark Down 26.9 150.9 Low 03:59:30 - 04:12:08 1519
Gardnerville 04:05:49 -20.0 Dark Down 27.1 150.9 Low 03:59:30 - 04:12:08 1507
Yerington 04:05:47 -20.4 Dark Down 27.3 151.5 Low 03:59:28 - 04:12:06 1500
Hawthorne 04:05:46 -21.0 Dark Down 27.9 151.9 Low 03:59:27 - 04:12:05 1470
Lee Vining 04:05:49 -20.9 Dark Down 28.2 151.3 Low 03:59:30 - 04:12:08 1451
Bishop 04:05:48 -21.7 Dark Down 29.0 151.8 Low 03:59:29 - 04:12:07 1409
Beatty 04:05:43 -23.0 Dark Down 30.0 153.3 Up 03:59:24 - 04:12:02 1357
Dunrhomin 04:04:50 -28.7 Dark Down 30.0 165.9 Low 03:58:31 - 04:11:09 1282
Nikitin 04:04:51 -28.8 Dark Down 30.1 165.9 Up 03:58:32 - 04:11:10 1274
CU-SBO 04:04:52 -28.8 Dark Down 30.2 165.8 Up 03:58:33 - 04:11:11 1272
Wildwood 04:05:57 -23.0 Dark Down 31.8 150.7 Up 03:59:38 - 04:12:16 1241
Laughlin/Bullhead City 04:05:38 -25.4 Dark Down 32.3 155.1 Up 03:59:19 - 04:11:57 1225
Patrick 04:05:35 -25.8 Dark Down 32.3 155.9 Up 03:59:16 - 04:11:54 1224
Idyllwild 04:05:51 -24.6 Dark Down 32.9 152.5 Up 03:59:32 - 04:12:10 1188
Lake Havasu City 04:05:39 -25.9 Dark Down 33.0 155.2 Up 03:59:20 - 04:11:58 1183
Calipatria 04:05:47 -25.7 Dark Down 33.8 153.6 Up 03:59:28 - 04:12:06 1129
George/Scottsdale 04:05:30 -28.1 Dark Down 34.5 157.6 Up 03:59:11 - 04:11:49 1088
Yuma 04:05:44 -26.6 Dark Down 34.6 154.4 Up 03:59:25 - 04:12:03 1086

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 523653, (2024/09/06 04:05UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 29.24 132
38Zet Sgr      19:02:36.7 -29:52:49  2.7 28.62  86
19 Cap         20:54:47.8 -17:55:23  5.4  1.09 113
PPM 238177     20:59:02.3 -18:55:01  8.2  0.36 114
PPM 238161     20:58:13.0 -18:40:28  9.5  0.12 114
523653         20:58:28.8 -18:34:39 14.9       114
Positions are for J2000

Event circumstances last updated at 2023/12/15 05:26:51 UT

Marc W. Buie, Southwest Research Institute

RECON