RECON: TNO occultation with 530838

Event between (530838) 11UC411 and star GA1140:00600406 with event index number of 1598960

Geocentric closest approach at 2024/08/06 10:34:55 UTC

J2000 position of star is 04:03:24.6 +24:11:43
Equinox of date position of star is 04:04:37.2 +24:14:59
Stellar brightness G=15.0, use SENSEUP=128
Star is 93 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=25.1

[RECON map]
TNO is 30.4 AU from the Sun and 30.8 AU from the Earth.
The TNO is moving 15.5 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 323 seconds.
The 1-sigma cross-track error in the shadow position is 2926 km.
The sky-plane scale is 22311.1 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=151.4 km assuming a 5% albedo -- 3.9 sec chord
Diameter=61.8 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 530838, (2024/08/06 10:35UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:20.1 +16:33:25  0.8 10.82  87
44Zet Per      03:55:41.1 +31:57:17  2.8  7.96  93
36 Tau         04:05:50.2 +24:10:18  6.1  0.23  93
PPM 093198     04:05:17.1 +24:28:04 10.3  0.23  93
530838         04:04:53.1 +24:15:42 15.0        93
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 2.8 sigma about the mid-time.
The median site spacing is 16.5 km RECON observability=1.0 and success probability=12.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Victoria 10:31:51 -18.6 Dark Down 30.3 86.9 Up 10:16:51 - 10:46:51 -1307
Clarence Fulton 10:32:07 -15.6 AT Down 33.1 91.1 Up 10:17:07 - 10:47:07 -1356
Peachland 10:32:03 -16.2 AT Down 32.8 90.4 Up 10:17:03 - 10:47:03 -1367
Kelowna 10:32:04 -16.0 AT Down 33.0 90.7 Up 10:17:04 - 10:47:04 -1371
Summerland 10:32:02 -16.3 AT Down 32.9 90.4 Up 10:17:02 - 10:47:02 -1378
Penticton 10:32:01 -16.3 AT Down 32.9 90.4 Up 10:17:01 - 10:47:01 -1385
Oliver 10:31:59 -16.6 AT Down 32.9 90.2 Up 10:16:59 - 10:46:59 -1405
Anarchist Mountain Observatory 10:31:59 -16.7 AT Down 33.1 90.2 Up 10:16:59 - 10:46:59 -1420
Tonasket 10:31:57 -16.9 AT Down 33.0 89.9 Up 10:16:57 - 10:46:57 -1435
Okanogan 10:31:55 -17.3 AT Down 32.9 89.6 Up 10:16:55 - 10:46:55 -1448
Manson/Chelan 10:31:51 -17.9 AT Down 32.5 88.9 Up 10:16:51 - 10:46:51 -1455
Brewster 10:31:53 -17.6 AT Down 32.7 89.3 Up 10:16:53 - 10:46:53 -1457
Entiat 10:31:49 -18.1 Dark Down 32.4 88.7 Up 10:16:49 - 10:46:49 -1465
Wenatchee 10:31:48 -18.4 Dark Down 32.4 88.4 Up 10:16:48 - 10:46:48 -1476
Ellensburg 10:31:45 -18.8 Dark Down 32.2 88.0 Up 10:16:45 - 10:46:45 -1491
Yakima 10:31:42 -19.1 Dark Down 32.2 87.7 Up 10:16:42 - 10:46:42 -1514
Toppenish/White Swan 10:31:41 -19.2 Dark Down 32.3 87.7 Up 10:16:41 - 10:46:41 -1532
The Dalles 10:31:35 -20.2 Dark Down 31.7 86.6 Up 10:16:35 - 10:46:35 -1548
Goldendale 10:31:37 -19.9 Dark Down 31.9 87.0 Up 10:16:37 - 10:46:37 -1548
Maupin 10:31:33 -20.5 Dark Down 31.7 86.4 Up 10:16:33 - 10:46:33 -1577
Pasco 10:31:42 -18.8 Dark Down 33.1 88.5 Up 10:16:42 - 10:46:42 -1586
PNWRO 10:31:40 -18.9 Dark Down 33.3 88.5 Up 10:16:40 - 10:46:40 -1608
Sisters 10:31:27 -21.4 Dark Down 31.3 85.6 Up 10:16:27 - 10:46:27 -1610
Redmond 10:31:27 -21.3 Dark Down 31.6 85.8 Up 10:16:27 - 10:46:27 -1626
Bend 10:31:25 -21.5 Dark Down 31.4 85.6 Up 10:16:25 - 10:46:25 -1634
Oregon Observatory 10:31:24 -21.7 Dark Down 31.3 85.4 Up 10:16:24 - 10:46:24 -1639
La Pine/Gilchrist 10:31:23 -21.9 Dark Down 31.3 85.2 Up 10:16:23 - 10:46:23 -1649
North Lake 10:31:21 -22.0 Dark Down 31.7 85.3 Up 10:16:21 - 10:46:21 -1699
Klamath Falls 10:31:14 -23.2 Dark Down 30.9 84.1 Up 10:16:14 - 10:46:14 -1728
Paisley 10:31:18 -22.3 Dark Down 31.9 85.2 Up 10:16:18 - 10:46:18 -1747
Lakeview 10:31:15 -22.6 Dark Down 31.9 85.0 Up 10:16:15 - 10:46:15 -1786
Fall River/Burney 10:31:07 -24.0 Dark Down 31.0 83.7 Up 10:16:07 - 10:46:07 -1818
Cedarville 10:31:12 -23.0 Dark Down 32.0 84.7 Up 10:16:12 - 10:46:12 -1835
Susanville 10:31:05 -24.2 Dark Down 31.5 83.7 Up 10:16:05 - 10:46:05 -1888
Greenville 10:31:02 -24.5 Dark Down 31.2 83.4 Up 10:16:02 - 10:46:02 -1894
Gimple 10:31:03 -24.5 Dark Down 31.3 83.4 Up 10:16:03 - 10:46:03 -1897
Quincy 10:31:02 -24.7 Dark Down 31.2 83.3 Up 10:16:02 - 10:46:02 -1907
Portola 10:31:02 -24.5 Dark Down 31.6 83.5 Up 10:16:02 - 10:46:02 -1935
Reno 10:31:00 -24.4 Dark Down 32.0 83.7 Up 10:16:00 - 10:46:00 -1979
Carson City 10:30:59 -24.7 Dark Down 32.0 83.5 Up 10:15:59 - 10:45:59 -2004
Gardnerville 10:30:57 -24.9 Dark Down 32.0 83.3 Up 10:15:57 - 10:45:57 -2022
Yerington 10:30:59 -24.6 Dark Down 32.5 83.7 Up 10:15:59 - 10:45:59 -2043
Hawthorne 10:30:57 -24.7 Dark Down 32.8 83.7 Up 10:15:57 - 10:45:57 -2096
Lee Vining 10:30:53 -25.3 Dark Down 32.4 83.1 Up 10:15:53 - 10:45:53 -2114
Bishop 10:30:50 -25.4 Dark Down 32.9 83.1 Up 10:15:50 - 10:45:50 -2187
Tonopah 10:30:57 -24.3 Dark Down 33.9 84.2 Up 10:15:57 - 10:45:57 -2187
CPSLO 10:30:36 -28.2 Dark Down 30.7 80.6 Up 10:15:36 - 10:45:36 -2237
Beatty 10:30:51 -24.9 Dark Down 34.1 83.7 Up 10:15:51 - 10:45:51 -2289
Indian Springs 10:30:52 -24.6 Dark Down 34.9 84.0 Up 10:15:52 - 10:45:52 -2359
Wildwood 10:30:33 -28.0 Dark Down 32.2 80.9 Up 10:15:33 - 10:45:33 -2413
Henderson 10:30:49 -24.6 Dark Down 35.4 84.0 Up 10:15:49 - 10:45:49 -2428
Searchlight/Boulder City 10:30:46 -25.0 Dark Down 35.4 83.6 Up 10:15:46 - 10:45:46 -2473
Laughlin/Bullhead City 10:30:45 -25.0 Dark Down 35.7 83.6 Up 10:15:45 - 10:45:45 -2511
Idyllwild 10:30:34 -27.3 Dark Down 33.7 81.5 Up 10:15:34 - 10:45:34 -2523
Patrick 10:30:48 -24.4 Dark Down 36.3 84.1 Up 10:15:48 - 10:45:48 -2523
Mohave Valley 10:30:44 -25.2 Dark Down 35.6 83.4 Up 10:15:44 - 10:45:44 -2531
Kingman/Dolan Springs 10:30:47 -24.6 Dark Down 36.1 83.9 Up 10:15:47 - 10:45:47 -2531
Niwot 10:31:35 -16.0 AT Down 43.4 93.4 Up 10:16:35 - 10:46:35 -2543
SwRI 10:31:33 -16.1 AT Down 43.3 93.2 Up 10:16:33 - 10:46:33 -2547
Lake Havasu City 10:30:42 -25.3 Dark Down 35.8 83.2 Up 10:15:42 - 10:45:42 -2572
DCO 10:30:49 -24.2 Dark Down 36.8 84.3 Up 10:15:49 - 10:45:49 -2577
Parker 10:30:41 -25.5 Dark Down 35.8 83.0 Up 10:15:41 - 10:45:41 -2600
Calipatria 10:30:33 -27.0 Dark Down 34.6 81.7 Up 10:15:33 - 10:45:33 -2623
Blythe 10:30:37 -26.1 Dark Down 35.4 82.5 Up 10:15:37 - 10:45:37 -2627
Yuma 10:30:33 -26.8 Dark Down 35.3 81.8 Up 10:15:33 - 10:45:33 -2696
George/Scottsdale 10:30:43 -24.4 Dark Down 37.7 83.9 Up 10:15:43 - 10:45:43 -2742

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 530838, (2024/08/06 10:35UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 10.82  87
44Zet Per      03:54:07.9 +31:53:01  2.8  7.96  93
36 Tau         04:04:21.7 +24:06:21  6.1  0.23  93
PPM 093198     04:03:48.4 +24:24:06 10.3  0.23  93
530838         04:03:24.6 +24:11:43 15.0        93
Positions are for J2000

Event circumstances last updated at 2020/02/27 22:37:47 UT

Marc W. Buie, Southwest Research Institute

RECON