RECON: TNO occultation with 523724

Event between (523724) 14MA70 and star GA0860:16951789 with event index number of 2329428

Geocentric closest approach at 2028/10/24 05:35:17 UTC

J2000 position of star is 23:17:41.6 -02:11:28
Equinox of date position of star is 23:18:49.9 -02:04:12
Stellar brightness G=12.4, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 59 degrees from the moon. Moon is 41% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 41.5 AU from the Sun and 40.8 AU from the Earth.
The TNO is moving 17.4 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 177 seconds.
The 1-sigma cross-track error in the shadow position is 1924 km.
The sky-plane scale is 29570.2 km/arcsec.

The TNO has an absolute magnitude Hv=5.3
Diameter=520.0 km assuming a 5% albedo -- 29.8 sec chord
Diameter=212.3 km assuming a 30% albedo -- 12.2 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 523724, (2028/10/24 05:33UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:59:14.0 -29:28:07  1.2 27.84  48
Markab         23:06:11.9 +15:21:39  2.5 17.69  65
96 Aqr         23:20:53.5 -04:57:59  5.4  2.96  58
PPM 181601     23:18:04.5 -01:25:40  7.9  0.67  59
PPM 207374     23:18:43.4 -02:07:02 10.0  0.14  59
523724         23:19:10.5 -02:02:00 12.4        60
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 5.1 sigma about the mid-time.
The median site spacing is 22.6 km RECON observability=1.0 and success probability=17.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 05:32:44 -42.7 Dark Down 36.8 188.2 Up 05:17:44 - 05:47:44 -1316
Victoria 05:32:59 -42.7 Dark Up 39.2 184.6 Up 05:17:59 - 05:47:59 -1359
Peachland 05:32:45 -43.7 Dark Down 37.7 189.0 Up 05:17:45 - 05:47:45 -1396
Kelowna 05:32:42 -43.7 Dark Down 37.6 189.4 Up 05:17:42 - 05:47:42 -1398
Summerland 05:32:43 -43.8 Dark Down 37.8 189.2 Up 05:17:43 - 05:47:43 -1408
Penticton 05:32:43 -43.9 Dark Down 37.9 189.3 Up 05:17:43 - 05:47:43 -1416
Oliver 05:32:43 -44.1 Dark Down 38.2 189.4 Up 05:17:43 - 05:47:43 -1440
Anarchist Mountain Observatory 05:32:43 -44.3 Dark Down 38.4 189.6 Up 05:17:43 - 05:47:43 -1457
Tonasket 05:32:43 -44.5 Dark Down 38.7 189.6 Up 05:17:43 - 05:47:43 -1476
Okanogan 05:32:45 -44.7 Dark Down 39.0 189.4 Up 05:17:45 - 05:47:45 -1494
Brewster 05:32:46 -44.8 Dark Down 39.3 189.2 Up 05:17:46 - 05:47:46 -1506
Manson/Chelan 05:32:47 -44.7 Dark Down 39.6 188.8 Up 05:17:47 - 05:47:47 -1508
Wenatchee 05:32:49 -45.0 Dark Up 40.1 188.6 Up 05:17:49 - 05:47:49 -1535
Ellensburg 05:32:50 -45.1 Dark Up 40.5 188.4 Up 05:17:50 - 05:47:50 -1556
Yakima 05:32:52 -45.4 Dark Up 40.9 188.4 Up 05:17:52 - 05:47:52 -1584
Toppenish/White Swan 05:32:50 -45.6 Dark Up 41.1 188.7 Up 05:17:50 - 05:47:50 -1605
Goldendale 05:32:53 -45.7 Dark Up 41.7 188.2 Up 05:17:53 - 05:47:53 -1629
The Dalles 05:32:55 -45.7 Dark Up 41.9 187.8 Up 05:17:55 - 05:47:55 -1632
Sleaford 05:31:54 -47.0 Dark Down 33.0 205.0 Up 05:16:54 - 05:46:54 -1657
Maupin 05:32:54 -46.0 Dark Up 42.3 187.9 Up 05:17:54 - 05:47:54 -1666
PNWRO 05:32:44 -46.6 Dark Up 41.3 190.7 Up 05:17:44 - 05:47:44 -1682
Sisters 05:32:58 -46.3 Dark Up 43.3 187.4 Up 05:17:58 - 05:47:58 -1711
Bend 05:32:57 -46.5 Dark Up 43.5 187.8 Up 05:17:57 - 05:47:57 -1737
Oregon Observatory 05:32:58 -46.6 Dark Up 43.7 187.6 Up 05:17:58 - 05:47:58 -1745
North Lake 05:32:57 -47.3 Dark Up 44.2 188.5 Up 05:17:57 - 05:47:57 -1811
Chiloquin 05:33:02 -47.1 Dark Up 45.0 187.2 Up 05:18:02 - 05:48:02 -1827
Klamath Falls 05:33:02 -47.4 Dark Up 45.3 187.4 Up 05:18:02 - 05:48:02 -1855
Lakeview 05:32:56 -48.2 Dark Up 45.2 189.4 Up 05:17:56 - 05:47:56 -1910
Fall River/Burney 05:33:02 -48.3 Dark Up 46.5 188.1 Up 05:18:02 - 05:48:02 -1958
Cedarville 05:32:56 -48.7 Dark Up 45.8 189.8 Up 05:17:56 - 05:47:56 -1966
Susanville 05:33:00 -49.1 Dark Up 47.0 189.3 Up 05:18:00 - 05:48:00 -2033
Greenville 05:33:02 -49.1 Dark Up 47.3 188.9 Up 05:18:02 - 05:48:02 -2043
Gimple 05:33:02 -49.1 Dark Up 47.3 189.0 Up 05:18:02 - 05:48:02 -2047
Quincy 05:33:02 -49.2 Dark Up 47.5 188.9 Up 05:18:02 - 05:48:02 -2059
Portola 05:33:00 -49.5 Dark Up 47.6 189.7 Up 05:18:00 - 05:48:00 -2087
Reno 05:32:58 -50.1 Dark Up 47.8 190.7 Up 05:17:58 - 05:47:58 -2132
Carson City 05:32:59 -50.3 Dark Up 48.1 190.8 Up 05:17:59 - 05:47:59 -2161
Gardnerville 05:32:59 -50.5 Dark Up 48.3 190.9 Up 05:17:59 - 05:47:59 -2182
Yerington 05:32:56 -50.8 Dark Up 48.2 191.7 Up 05:17:56 - 05:47:56 -2201
Hawthorne 05:32:55 -51.4 Dark Up 48.6 192.6 Up 05:17:55 - 05:47:55 -2258
Lee Vining 05:32:57 -51.4 Dark Up 49.2 192.0 Up 05:17:57 - 05:47:57 -2284
Tonopah 05:32:49 -52.6 Dark Up 48.8 194.8 Up 05:17:49 - 05:47:49 -2350
Bishop 05:32:55 -52.2 Dark Up 49.7 193.3 Up 05:17:55 - 05:47:55 -2361
Beatty 05:32:49 -53.6 Dark Up 49.8 195.9 Up 05:17:49 - 05:47:49 -2463
Indian Springs 05:32:45 -54.4 Dark Up 49.8 197.6 Up 05:17:45 - 05:47:45 -2532
Henderson 05:32:43 -55.2 Dark Up 50.2 198.8 Up 05:17:43 - 05:47:43 -2605
Dunrhomin 05:31:56 -57.4 Dark Down 43.2 210.2 Up 05:16:56 - 05:46:56 -2617
Wildwood 05:33:02 -53.9 Dark Up 52.9 194.0 Up 05:18:02 - 05:48:02 -2624
CU-SBO 05:31:57 -57.6 Dark Down 43.5 210.2 Up 05:16:57 - 05:46:57 -2635
Laughlin/Bullhead City 05:32:42 -56.0 Dark Up 50.9 199.8 Up 05:17:42 - 05:47:42 -2695
Patrick 05:32:38 -56.3 Dark Up 50.5 200.7 Up 05:17:38 - 05:47:38 -2702
Kingman/Dolan Springs 05:32:39 -56.3 Dark Up 50.7 200.5 Up 05:17:39 - 05:47:39 -2713
Mohave Valley 05:32:42 -56.2 Dark Up 51.2 199.9 Up 05:17:42 - 05:47:42 -2718
Idyllwild 05:32:54 -55.4 Dark Up 52.8 197.1 Up 05:17:54 - 05:47:54 -2731
Lake Havasu City 05:32:42 -56.6 Dark Up 51.5 200.4 Up 05:17:42 - 05:47:42 -2763
Parker 05:32:42 -56.8 Dark Up 51.8 200.6 Up 05:17:42 - 05:47:42 -2794
Calipatria 05:32:49 -56.5 Dark Up 53.1 199.2 Up 05:17:49 - 05:47:49 -2832
Yuma 05:32:46 -57.4 Dark Up 53.2 200.8 Up 05:17:46 - 05:47:46 -2906
George/Scottsdale 05:32:32 -58.6 Dark Up 51.4 204.5 Up 05:17:32 - 05:47:32 -2929

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 523724, (2028/10/24 05:33UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 27.84  48
Markab         23:04:45.8 +15:12:18  2.5 17.69  65
96 Aqr         23:19:24.3 -05:07:28  5.4  2.96  58
PPM 181601     23:16:35.7 -01:35:07  7.9  0.67  59
PPM 207374     23:17:14.6 -02:16:30 10.0  0.14  59
523724         23:17:41.6 -02:11:28 12.4        59
Positions are for J2000

Event circumstances last updated at 2022/02/20 00:56:04 UT

Marc W. Buie, Southwest Research Institute

RECON