RECON: TNO occultation with 576257

Event between (576257) 12JD68 and star GA0960:08607971 with event index number of 2752937

Geocentric closest approach at 2029/05/13 07:45:39 UTC

J2000 position of star is 18:37:32.2 +06:36:28
Equinox of date position of star is 18:38:37.0 +06:37:41
Stellar brightness G=13.6, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 121 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=22.9

[RECON map]
TNO is 28.3 AU from the Sun and 27.7 AU from the Earth.
The TNO is moving 16.9 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 452 seconds.
The 1-sigma cross-track error in the shadow position is 5047 km.
The sky-plane scale is 20071.8 km/arcsec.

The TNO has an absolute magnitude Hv=8.2
Diameter=138.0 km assuming a 5% albedo -- 8.2 sec chord
Diameter=56.4 km assuming a 30% albedo -- 3.3 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 576257, (2029/05/13 07:46UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:55.9 +38:48:43  0.0 32.18 102
60Bet Oph      17:44:55.5 +04:33:25  2.8 13.60 134
PPM 166175     18:38:04.8 +06:41:51  5.8  0.23 121
PPM 166183     18:38:25.3 +06:26:33  8.5  0.24 121
PPM 166175     18:38:04.8 +06:41:51  5.8  0.23 121
PPM 166241     18:39:35.6 +06:35:00 10.1  0.16 121
576257         18:38:58.0 +06:38:05 13.6       121
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 2.0 sigma about the mid-time.
The median site spacing is 28.9 km RECON observability=1.0 and success probability=11.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:50:10 -18.6 Dark Down 35.6 133.5 Up 07:35:10 - 08:05:10 3465
Kamloops 07:50:47 -20.8 Dark Down 29.2 118.3 Low 07:35:47 - 08:05:47 2983
Kelowna 07:50:46 -21.7 Dark Down 30.1 118.7 Up 07:35:46 - 08:05:46 2920
Peachland 07:50:46 -21.8 Dark Down 30.0 118.4 Low 07:35:46 - 08:05:46 2902
Summerland 07:50:46 -21.9 Dark Down 30.1 118.4 Up 07:35:46 - 08:05:46 2889
Penticton 07:50:46 -22.0 Dark Down 30.2 118.5 Up 07:35:46 - 08:05:46 2885
Oliver 07:50:46 -22.3 Dark Down 30.4 118.3 Up 07:35:46 - 08:05:46 2849
Anarchist Mountain Observatory 07:50:46 -22.5 Dark Down 30.6 118.4 Up 07:35:46 - 08:05:46 2836
Tonasket 07:50:46 -22.8 Dark Down 30.7 118.2 Up 07:35:46 - 08:05:46 2803
Okanogan 07:50:46 -23.1 Dark Down 30.7 117.8 Up 07:35:46 - 08:05:46 2766
Brewster 07:50:47 -23.4 Dark Down 30.7 117.5 Up 07:35:47 - 08:05:47 2734
Manson/Chelan 07:50:48 -23.6 Dark Down 30.6 117.1 Up 07:35:48 - 08:05:48 2704
Victoria 07:50:56 -22.9 Dark Down 28.4 114.5 Low 07:35:56 - 08:05:56 2704
Wenatchee 07:50:48 -24.1 Dark Down 30.7 116.7 Up 07:35:48 - 08:05:48 2652
Ellensburg 07:50:49 -24.5 Dark Down 30.8 116.2 Up 07:35:49 - 08:05:49 2605
Yakima 07:50:49 -24.9 Dark Down 30.9 116.0 Up 07:35:49 - 08:05:49 2563
Toppenish/White Swan 07:50:50 -25.1 Dark Down 31.1 116.1 Up 07:35:50 - 08:05:50 2544
PNWRO 07:50:46 -25.5 Dark Down 32.2 117.2 Up 07:35:46 - 08:05:46 2540
Goldendale 07:50:50 -25.7 Dark Down 31.1 115.4 Up 07:35:50 - 08:05:50 2478
The Dalles 07:50:52 -25.9 Dark Down 31.0 114.9 Up 07:35:52 - 08:05:52 2446
Maupin 07:50:51 -26.3 Dark Down 31.2 114.8 Up 07:35:51 - 08:05:51 2405
Dunrhomin 07:50:00 -30.0 Dark Down 43.6 126.8 Up 07:35:00 - 08:05:00 2353
CU-SBO 07:50:01 -30.2 Dark Down 43.7 126.5 Up 07:35:01 - 08:05:01 2325
Sisters 07:50:53 -27.2 Dark Down 31.3 113.9 Up 07:35:53 - 08:05:53 2303
Bend 07:50:52 -27.4 Dark Down 31.5 114.0 Up 07:35:52 - 08:05:52 2284
Oregon Observatory 07:50:53 -27.6 Dark Down 31.5 113.8 Up 07:35:53 - 08:05:53 2263
North Lake 07:50:52 -28.2 Dark Down 32.1 113.9 Up 07:35:52 - 08:05:52 2208
Chiloquin 07:50:54 -28.9 Dark Down 31.8 112.7 Up 07:35:54 - 08:05:54 2115
Lakeview 07:50:49 -29.3 Dark Down 32.9 113.7 Up 07:35:49 - 08:05:49 2110
Klamath Falls 07:50:53 -29.2 Dark Down 32.0 112.5 Up 07:35:53 - 08:05:53 2081
Cedarville 07:50:50 -30.0 Dark Down 33.3 113.5 Up 07:35:50 - 08:05:50 2045
Fall River/Burney 07:50:52 -30.4 Dark Down 32.7 112.2 Up 07:35:52 - 08:05:52 1966
Susanville 07:50:50 -31.1 Dark Down 33.4 112.4 Up 07:35:50 - 08:05:50 1917
Gimple 07:50:51 -31.3 Dark Down 33.4 112.0 Up 07:35:51 - 08:05:51 1882
Greenville 07:50:51 -31.3 Dark Down 33.3 112.0 Up 07:35:51 - 08:05:51 1881
Quincy 07:50:51 -31.5 Dark Down 33.4 111.9 Up 07:35:51 - 08:05:51 1859
Portola 07:50:49 -31.7 Dark Down 33.8 112.2 Up 07:35:49 - 08:05:49 1858
Reno 07:50:47 -32.0 Dark Down 34.3 112.5 Up 07:35:47 - 08:05:47 1845
Carson City 07:50:47 -32.3 Dark Down 34.5 112.3 Up 07:35:47 - 08:05:47 1808
Yerington 07:50:45 -32.5 Dark Down 35.0 112.7 Up 07:35:45 - 08:05:45 1804
Gardnerville 07:50:47 -32.6 Dark Down 34.6 112.2 Up 07:35:47 - 08:05:47 1784
Hawthorne 07:50:43 -33.0 Dark Down 35.6 112.9 Up 07:35:43 - 08:05:43 1769
Tonopah 07:50:39 -33.4 Dark Down 36.8 113.7 Up 07:35:39 - 08:05:39 1757
Lee Vining 07:50:45 -33.6 Dark Down 35.4 112.1 Up 07:35:45 - 08:05:45 1696
Bishop 07:50:42 -34.2 Dark Down 36.2 112.3 Up 07:35:42 - 08:05:42 1652
Beatty 07:50:37 -34.6 Dark Down 37.6 113.3 Up 07:35:37 - 08:05:37 1649
Indian Springs 07:50:33 -34.9 Dark Down 38.5 114.0 Up 07:35:33 - 08:05:33 1645
Henderson 07:50:30 -35.4 Dark Down 39.2 114.2 Up 07:35:30 - 08:05:30 1610
Patrick 07:50:26 -35.9 Dark Down 40.3 114.7 Up 07:35:26 - 08:05:26 1578
Kingman/Dolan Springs 07:50:26 -36.2 Dark Down 40.2 114.3 Up 07:35:26 - 08:05:26 1549
Laughlin/Bullhead City 07:50:28 -36.2 Dark Down 39.8 113.9 Up 07:35:28 - 08:05:28 1531
Mohave Valley 07:50:28 -36.5 Dark Down 40.0 113.7 Up 07:35:28 - 08:05:28 1503
Lake Havasu City 07:50:27 -36.9 Dark Down 40.3 113.6 Up 07:35:27 - 08:05:27 1468
George/Scottsdale 07:50:17 -37.4 Dark Down 42.5 115.0 Up 07:35:17 - 08:05:17 1466
Parker 07:50:26 -37.2 Dark Down 40.5 113.3 Up 07:35:26 - 08:05:26 1433
Idyllwild 07:50:33 -37.8 Dark Down 38.8 111.0 Up 07:35:33 - 08:05:33 1317
Wildwood 07:50:40 -37.4 Dark Down 37.2 109.8 Up 07:35:40 - 08:05:40 1302
Calipatria 07:50:29 -38.3 Dark Down 39.9 111.5 Up 07:35:29 - 08:05:29 1289
Yuma 07:50:26 -38.7 Dark Down 40.8 111.9 Up 07:35:26 - 08:05:26 1271

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 576257, (2029/05/13 07:46UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:08  0.0 32.18 102
60Bet Oph      17:43:28.3 +04:34:06  2.8 13.60 134
PPM 166175     18:36:39.1 +06:40:16  5.8  0.23 121
PPM 166183     18:36:59.4 +06:24:57  8.5  0.24 121
PPM 166175     18:36:39.1 +06:40:16  5.8  0.23 121
PPM 166241     18:38:09.7 +06:33:21 10.1  0.16 121
576257         18:37:32.2 +06:36:28 13.6       121
Positions are for J2000

Event circumstances last updated at 2022/02/27 23:22:05 UT

Marc W. Buie, Southwest Research Institute

RECON