RECON: TNO occultation with 129772

Event between (129772) 99HR11 and star GA0720:05655443 with event index number of 2742215

Geocentric closest approach at 2029/04/08 09:44:33 UTC

J2000 position of star is 15:17:05.7 -16:17:37
Equinox of date position of star is 15:18:20.4 -16:22:26
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 87 degrees from the moon. Moon is 25% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 42.2 AU from the Sun and 41.4 AU from the Earth.
The TNO is moving 20.1 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 471 seconds.
The 1-sigma cross-track error in the shadow position is 5821 km.
The sky-plane scale is 30025.5 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 10.9 sec chord
Diameter=89.3 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is 7:4EEE
 
 
 
 
 
 

Star training set for 129772, (2029/04/08 09:45UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:12.4 -26:29:39  0.9 19.62  69
27Bet Lib      15:18:35.2 -09:29:20  2.6  6.91  89
28 Lib         15:22:33.6 -18:15:46  6.4  2.07  86
PPM 229896     15:13:59.6 -16:31:10  7.8  1.14  88
PPM 230002     15:18:14.6 -16:37:10  9.7  0.25  87
129772         15:18:44.4 -16:23:58 15.0        87
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 1.9 sigma about the mid-time.
The median site spacing is 13.4 km RECON observability=1.0 and success probability=5.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 09:45:28 -21.4 Dark Down 21.3 188.4 Low 09:30:28 - 10:00:28 -1460
Kamloops 09:46:15 -27.8 Dark Down 22.8 173.6 Low 09:31:15 - 10:01:15 -1783
Kelowna 09:46:12 -28.2 Dark Down 23.7 174.5 Low 09:31:12 - 10:01:12 -1801
Peachland 09:46:13 -28.4 Dark Down 23.8 174.2 Low 09:31:13 - 10:01:13 -1812
Summerland 09:46:13 -28.5 Dark Down 23.9 174.3 Low 09:31:13 - 10:01:13 -1817
Penticton 09:46:12 -28.6 Dark Down 24.0 174.4 Low 09:31:12 - 10:01:12 -1818
Oliver 09:46:12 -28.9 Dark Down 24.4 174.4 Low 09:31:12 - 10:01:12 -1835
Anarchist Mountain Observatory 09:46:11 -28.9 Dark Down 24.5 174.6 Low 09:31:11 - 10:01:11 -1838
Tonasket 09:46:11 -29.2 Dark Down 24.8 174.5 Low 09:31:11 - 10:01:11 -1854
Okanogan 09:46:13 -29.6 Dark Down 25.2 174.3 Low 09:31:13 - 10:01:13 -1874
Brewster 09:46:13 -29.9 Dark Down 25.4 174.1 Low 09:31:13 - 10:01:13 -1891
Manson/Chelan 09:46:14 -30.2 Dark Down 25.6 173.7 Low 09:31:14 - 10:01:14 -1910
Wenatchee 09:46:15 -30.6 Dark Down 26.1 173.5 Low 09:31:15 - 10:01:15 -1937
Victoria 09:46:26 -30.6 Dark Down 24.7 170.3 Low 09:31:26 - 10:01:26 -1952
Ellensburg 09:46:15 -31.1 Dark Down 26.5 173.2 Low 09:31:15 - 10:01:15 -1963
PNWRO 09:46:09 -31.4 Dark Down 27.6 174.9 Low 09:31:09 - 10:01:09 -1976
Yakima 09:46:15 -31.4 Dark Down 26.9 173.2 Low 09:31:15 - 10:01:15 -1984
Toppenish/White Swan 09:46:15 -31.6 Dark Down 27.1 173.3 Low 09:31:15 - 10:01:15 -1991
Dunrhomin 09:45:12 -29.4 Dark Down 32.9 190.1 Up 09:30:12 - 10:00:12 -1996
CU-SBO 09:45:12 -29.6 Dark Down 33.1 190.0 Up 09:30:12 - 10:00:12 -2011
Goldendale 09:46:16 -32.2 Dark Down 27.6 172.9 Low 09:31:16 - 10:01:16 -2030
The Dalles 09:46:17 -32.5 Dark Down 27.8 172.5 Low 09:31:17 - 10:01:17 -2050
Maupin 09:46:17 -32.8 Dark Down 28.2 172.5 Low 09:31:17 - 10:01:17 -2070
Sisters 09:46:19 -33.8 Dark Down 29.0 171.9 Low 09:31:19 - 10:01:19 -2129
Bend 09:46:17 -33.9 Dark Down 29.3 172.2 Low 09:31:17 - 10:01:17 -2136
Oregon Observatory 09:46:18 -34.1 Dark Down 29.5 172.1 Low 09:31:18 - 10:01:18 -2149
North Lake 09:46:16 -34.4 Dark Down 30.1 172.6 Up 09:31:16 - 10:01:16 -2172
Lakeview 09:46:13 -35.1 Dark Down 31.2 173.1 Up 09:31:13 - 10:01:13 -2219
Chiloquin 09:46:20 -35.4 Dark Down 30.7 171.5 Up 09:31:20 - 10:01:20 -2234
Klamath Falls 09:46:18 -35.6 Dark Down 31.1 171.5 Up 09:31:18 - 10:01:18 -2252
Cedarville 09:46:13 -35.6 Dark Down 31.9 173.3 Up 09:31:13 - 10:01:13 -2253
Fall River/Burney 09:46:17 -36.5 Dark Down 32.3 171.9 Up 09:31:17 - 10:01:17 -2313
Susanville 09:46:14 -36.8 Dark Down 33.0 172.6 Up 09:31:14 - 10:01:14 -2332
Gimple 09:46:14 -37.1 Dark Down 33.2 172.4 Up 09:31:14 - 10:01:14 -2355
Greenville 09:46:15 -37.1 Dark Down 33.2 172.3 Up 09:31:15 - 10:01:15 -2357
Portola 09:46:13 -37.2 Dark Down 33.6 172.8 Up 09:31:13 - 10:01:13 -2365
Reno 09:46:10 -37.2 Dark Down 33.9 173.5 Up 09:31:10 - 10:01:10 -2365
Quincy 09:46:15 -37.3 Dark Down 33.4 172.3 Up 09:31:15 - 10:01:15 -2369
Yerington 09:46:07 -37.3 Dark Down 34.5 174.2 Up 09:31:07 - 10:01:07 -2383
Carson City 09:46:10 -37.4 Dark Down 34.3 173.5 Up 09:31:10 - 10:01:10 -2386
Tonopah 09:45:59 -37.2 Dark Down 35.6 176.4 Up 09:30:59 - 10:00:59 -2392
Hawthorne 09:46:04 -37.5 Dark Down 35.0 174.8 Up 09:31:04 - 10:01:04 -2399
Gardnerville 09:46:09 -37.6 Dark Down 34.5 173.5 Up 09:31:09 - 10:01:09 -2401
Lee Vining 09:46:06 -38.2 Dark Down 35.5 174.2 Up 09:31:06 - 10:01:06 -2446
Indian Springs 09:45:51 -37.6 Dark Down 37.1 178.1 Up 09:30:51 - 10:00:51 -2450
Beatty 09:45:56 -37.9 Dark Down 36.7 176.9 Up 09:30:56 - 10:00:56 -2456
Bishop 09:46:03 -38.3 Dark Down 36.2 175.0 Up 09:31:03 - 10:01:03 -2467
Henderson 09:45:43 -37.7 Dark Down 37.7 178.9 Up 09:30:43 - 10:00:43 -2470
Patrick 09:45:42 -37.6 Dark Down 38.3 180.3 Up 09:30:42 - 10:00:42 -2482
Kingman/Dolan Springs 09:45:43 -37.9 Dark Down 38.5 180.1 Up 09:30:43 - 10:00:43 -2501
Laughlin/Bullhead City 09:45:43 -38.2 Dark Down 38.5 179.4 Up 09:30:43 - 10:00:43 -2517
Mohave Valley 09:45:43 -38.4 Dark Down 38.8 179.4 Up 09:30:43 - 10:00:43 -2535
George/Scottsdale 09:45:32 -37.7 Dark Down 39.9 182.8 Up 09:30:32 - 10:00:32 -2547
Lake Havasu City 09:45:43 -38.5 Dark Down 39.2 179.7 Up 09:30:43 - 10:00:43 -2555
Parker 09:45:43 -38.8 Dark Down 39.6 179.8 Up 09:30:43 - 10:00:43 -2578
Idyllwild 09:45:54 -40.4 Dark Down 39.9 176.8 Up 09:30:54 - 10:00:54 -2667
Calipatria 09:45:43 -40.2 Dark Down 40.6 178.2 Up 09:30:43 - 10:00:43 -2681
Yuma 09:45:43 -40.0 Dark Down 41.0 179.3 Up 09:30:43 - 10:00:43 -2687
Wildwood 09:46:03 -41.0 Dark Down 39.4 174.5 Up 09:31:03 - 10:01:03 -2692

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 129772, (2029/04/08 09:45UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 19.62  69
27Bet Lib      15:17:00.3 -09:22:59  2.6  6.91  89
28 Lib         15:20:53.7 -18:09:32  6.4  2.07  86
PPM 229896     15:12:20.9 -16:24:40  7.8  1.14  88
PPM 230002     15:16:35.8 -16:30:48  9.7  0.25  87
129772         15:17:05.7 -16:17:37 15.0        87
Positions are for J2000

Event circumstances last updated at 2022/02/27 00:57:46 UT

Marc W. Buie, Southwest Research Institute

RECON