RECON: TNO occultation with 129772

Event between (129772) 99HR11 and star GA0780:04532199 with event index number of 314640

Geocentric closest approach at 2019/05/30 08:05:57 UTC

J2000 position of star is 14:20:17.6 -11:25:19
Equinox of date position of star is 14:21:19.4 -11:30:32
Stellar brightness G=16.4, use SENSEUP=128
Star is 162 degrees from the moon. Moon is 18% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 42.2 AU from the Sun and 41.3 AU from the Earth.
The TNO is moving 20.5 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 380 seconds.
The 1-sigma cross-track error in the shadow position is 5271 km.
The sky-plane scale is 29964.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 10.7 sec chord
Diameter=89.3 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is 7:4EEE
 
 
 
 
 
 

Star training set for 129772, (2019/05/30 08:06UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:13.1 -11:15:43  1.0 13.51 171
2 Lib          14:24:28.5 -11:48:07  6.2  0.82 162
PPM 228659     14:22:18.9 -11:29:12  8.2  0.24 162
PPM 228638     14:21:10.0 -11:22:37  9.5  0.14 163
129772         14:21:20.3 -11:30:37 16.4       162
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 2.4 sigma about the mid-time.
The median site spacing is 11.2 km RECON observability=1.0 and success probability=4.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 08:05:25 -18.3 Dark Down 21.7 216.6 Low 07:50:25 - 08:20:25 -2095
Summerland 08:05:26 -18.4 Dark Down 21.8 216.3 Low 07:50:26 - 08:20:26 -2100
Penticton 08:05:25 -18.7 Dark Down 22.0 216.5 Low 07:50:25 - 08:20:25 -2111
Okanagan Falls 08:05:23 -18.9 Dark Down 22.2 216.6 Low 07:50:23 - 08:20:23 -2119
Oliver 08:05:23 -19.0 Dark Down 22.3 216.6 Low 07:50:23 - 08:20:23 -2126
Anarchist Mountain Observatory 08:05:22 -19.2 Dark Down 22.4 216.9 Low 07:50:22 - 08:20:22 -2131
Oroville 08:05:22 -19.3 Dark Down 22.5 216.8 Low 07:50:22 - 08:20:22 -2135
Tonasket 08:05:22 -19.5 Dark Down 22.6 216.9 Low 07:50:22 - 08:20:22 -2145
Okanogan 08:05:21 -19.9 Dark Down 23.0 216.8 Low 07:50:21 - 08:20:21 -2161
Brewster 08:05:21 -20.1 Dark Down 23.3 216.7 Low 07:50:21 - 08:20:21 -2174
Manson/Chelan 08:05:21 -20.4 Dark Down 23.6 216.4 Low 07:50:21 - 08:20:21 -2187
Entiat 08:05:21 -20.6 Dark Down 23.8 216.3 Low 07:50:21 - 08:20:21 -2198
Wenatchee 08:05:20 -20.8 Dark Down 24.0 216.3 Low 07:50:20 - 08:20:20 -2210
Ellensburg 08:05:20 -21.2 Dark Down 24.5 216.2 Low 07:50:20 - 08:20:20 -2231
Yakima 08:05:19 -21.7 Dark Down 24.8 216.3 Low 07:50:19 - 08:20:19 -2250
Pasco 08:05:14 -22.0 Dark Down 24.5 217.8 Low 07:50:14 - 08:20:14 -2251
Toppenish/White Swan 08:05:17 -21.9 Dark Down 24.9 216.5 Low 07:50:17 - 08:20:17 -2258
PNWRO 08:05:12 -22.2 Dark Down 24.6 218.1 Low 07:50:12 - 08:20:12 -2260
George/Umatilla 08:05:13 -22.3 Dark Down 24.8 217.7 Low 07:50:13 - 08:20:13 -2269
Goldendale 08:05:18 -22.4 Dark Down 25.5 216.3 Low 07:50:18 - 08:20:18 -2289
The Dalles 08:05:18 -22.7 Dark Down 25.9 216.0 Low 07:50:18 - 08:20:18 -2303
Maupin 08:05:16 -23.1 Dark Down 26.2 216.2 Low 07:50:16 - 08:20:16 -2322
Madras/Culver 08:05:15 -23.6 Dark Down 26.6 216.3 Low 07:50:15 - 08:20:15 -2350
Redmond 08:05:14 -24.0 Dark Down 26.9 216.3 Low 07:50:14 - 08:20:14 -2368
Sisters 08:05:16 -24.0 Dark Down 27.1 215.9 Low 07:50:16 - 08:20:16 -2372
Bend 08:05:14 -24.2 Dark Down 27.2 216.3 Low 07:50:14 - 08:20:14 -2381
Oregon Observatory 08:05:14 -24.4 Dark Down 27.4 216.2 Low 07:50:14 - 08:20:14 -2391
La Pine/Gilchrist 08:05:13 -24.6 Dark Down 27.6 216.2 Low 07:50:13 - 08:20:13 -2402
North Lake 08:05:11 -25.0 Dark Down 27.6 216.9 Low 07:50:11 - 08:20:11 -2418
Paisley 08:05:08 -25.6 Dark Down 27.9 217.4 Low 07:50:08 - 08:20:08 -2443
Chiloquin 08:05:12 -25.7 Dark Down 28.6 216.2 Low 07:50:12 - 08:20:12 -2465
Niwot 08:04:12 -26.3 Dark Down 21.7 232.1 Low 07:49:12 - 08:19:12 -2465
Lakeview 08:05:05 -26.1 Dark Down 28.3 217.8 Low 07:50:05 - 08:20:05 -2468
SwRI 08:04:12 -26.4 Dark Down 21.9 232.0 Low 07:49:12 - 08:19:12 -2471
Klamath Falls 08:05:11 -26.0 Dark Down 28.8 216.4 Low 07:50:11 - 08:20:11 -2482
Tulelake 08:05:09 -26.3 Dark Down 28.9 216.7 Low 07:50:09 - 08:20:09 -2493
Cedarville 08:05:03 -26.7 Dark Down 28.7 218.2 Low 07:50:03 - 08:20:03 -2502
Fall River/Burney 08:05:06 -27.2 Dark Down 29.6 217.1 Low 07:50:06 - 08:20:06 -2542
Susanville 08:05:02 -27.8 Dark Down 29.8 218.1 Low 07:50:02 - 08:20:02 -2569
Gimple 08:05:02 -28.1 Dark Down 30.1 218.0 Up 07:50:02 - 08:20:02 -2588
Greenville 08:05:02 -28.1 Dark Down 30.2 217.9 Up 07:50:02 - 08:20:02 -2588
Quincy 08:05:01 -28.3 Dark Down 30.3 217.9 Up 07:50:01 - 08:20:01 -2600
Portola 08:05:00 -28.4 Dark Down 30.2 218.5 Up 07:50:00 - 08:20:00 -2602
Reno 08:04:56 -28.7 Dark Down 30.1 219.2 Up 07:49:56 - 08:19:56 -2610
Carson City 08:04:55 -29.0 Dark Down 30.4 219.3 Up 07:49:55 - 08:19:55 -2631
Yerington 08:04:52 -29.2 Dark Down 30.2 220.0 Up 07:49:52 - 08:19:52 -2635
Gardnerville 08:04:55 -29.3 Dark Down 30.5 219.5 Up 07:49:55 - 08:19:55 -2644
Hawthorne 08:04:50 -29.7 Dark Down 30.3 220.7 Up 07:49:50 - 08:19:50 -2657
Tonopah 08:04:43 -30.0 Dark Down 29.9 222.2 Low 07:49:43 - 08:19:43 -2670
Lee Vining 08:04:50 -30.2 Dark Down 31.0 220.4 Up 07:49:50 - 08:19:50 -2696
Bishop 08:04:46 -30.8 Dark Down 31.1 221.4 Up 07:49:46 - 08:19:46 -2724
Beatty 08:04:38 -31.2 Dark Down 30.5 223.1 Up 07:49:38 - 08:19:38 -2736
Indian Springs 08:04:34 -31.4 Dark Down 30.2 224.2 Up 07:49:34 - 08:19:34 -2745
Lone Pine 08:04:43 -31.5 Dark Down 31.5 222.0 Up 07:49:43 - 08:19:43 -2768
Henderson 08:04:30 -31.9 Dark Down 30.2 225.1 Up 07:49:30 - 08:19:30 -2772
Patrick 08:04:24 -32.4 Dark Down 30.0 226.3 Low 07:49:24 - 08:19:24 -2802
Searchlight/Boulder City 08:04:28 -32.4 Dark Down 30.6 225.3 Up 07:49:28 - 08:19:28 -2808
DCO 08:04:21 -32.6 Dark Down 29.8 227.1 Low 07:49:21 - 08:19:21 -2815
Kingman/Dolan Springs 08:04:24 -32.6 Dark Down 30.2 226.2 Up 07:49:24 - 08:19:24 -2817
Laughlin/Bullhead City 08:04:26 -32.7 Dark Down 30.6 225.8 Up 07:49:26 - 08:19:26 -2824
Mohave Valley 08:04:25 -33.0 Dark Down 30.8 225.9 Up 07:49:25 - 08:19:25 -2841
Lake Havasu City 08:04:23 -33.3 Dark Down 30.9 226.3 Up 07:49:23 - 08:19:23 -2865
CPSLO 08:04:48 -32.9 Dark Down 33.8 220.0 Up 07:49:48 - 08:19:48 -2881
Parker 08:04:22 -33.7 Dark Down 31.1 226.5 Up 07:49:22 - 08:19:22 -2888
Blythe 08:04:22 -34.2 Dark Down 31.7 226.4 Up 07:49:22 - 08:19:22 -2925
Wildwood 08:04:38 -34.1 Dark Down 33.6 222.5 Up 07:49:38 - 08:19:38 -2936
Idyllwild 08:04:29 -34.3 Dark Down 32.8 224.4 Up 07:49:29 - 08:19:29 -2939
Calipatria 08:04:23 -34.8 Dark Down 32.6 225.8 Up 07:49:23 - 08:19:23 -2967
Yuma 08:04:19 -35.1 Dark Down 32.3 226.8 Up 07:49:19 - 08:19:19 -2988

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, (2019/05/30 08:06UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 13.51 171
2 Lib          14:23:25.6 -11:42:52  6.2  0.82 162
PPM 228659     14:21:16.1 -11:23:55  8.2  0.24 162
PPM 228638     14:20:07.4 -11:17:19  9.5  0.14 163
129772         14:20:17.6 -11:25:19 16.4       162
Positions are for J2000

Event circumstances last updated at 2019/02/12 08:13:42 UT

Marc W. Buie, Southwest Research Institute

RECON