RECON: TNO occultation with 129772

Event between (129772) 99HR11 and star UC4-393-059103 with event index number of 190850

Geocentric closest approach at 2019/05/30 07:58:18 UTC

J2000 position of star is 14:20:17.6 -11:25:19
Equinox of date position of star is 14:21:13.9 -11:30:04
Stellar brightness R=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 394 seconds.
The 1-sigma cross-track error in the shadow position is 4480 km.
The sky-plane scale is 29964.0 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 CLASSICAL
 
 
 
 
 
 

Star training set for 129772, (2019/05/30 07:58UT)
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 -11:48:06  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  0.14 162
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 2.3 sigma about the mid-time.
The median site spacing is 11.7 km RECON observability=1.0 and success probability=4.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 07:57:48 -19.3 Dark Down 23.2 214.9 Low 07:42:48 - 08:12:48 3503
Tonasket 07:57:47 -19.6 Dark Down 23.4 215.0 Low 07:42:47 - 08:12:47 3493
Okanogan 07:57:47 -19.9 Dark Down 23.7 214.9 Low 07:42:47 - 08:12:47 3477
Brewster 07:57:47 -20.2 Dark Down 24.0 214.8 Low 07:42:47 - 08:12:47 3463
Manson/Chelan 07:57:46 -20.4 Dark Down 24.3 214.5 Low 07:42:46 - 08:12:46 3450
Entiat 07:57:46 -20.6 Dark Down 24.5 214.5 Low 07:42:46 - 08:12:46 3440
Wenatchee 07:57:46 -20.8 Dark Down 24.8 214.4 Low 07:42:46 - 08:12:46 3427
Ellensburg 07:57:45 -21.3 Dark Down 25.2 214.3 Low 07:42:45 - 08:12:45 3406
Yakima 07:57:44 -21.7 Dark Down 25.6 214.4 Low 07:42:44 - 08:12:44 3387
Pasco 07:57:39 -22.0 Dark Down 25.3 215.9 Low 07:42:39 - 08:12:39 3387
Toppenish/White Swan 07:57:43 -21.9 Dark Down 25.7 214.6 Low 07:42:43 - 08:12:43 3379
PNWRO 07:57:38 -22.2 Dark Down 25.4 216.2 Low 07:42:38 - 08:12:38 3378
George/Umatilla 07:57:39 -22.3 Dark Down 25.6 215.8 Low 07:42:39 - 08:12:39 3368
Goldendale 07:57:42 -22.4 Dark Down 26.3 214.4 Low 07:42:42 - 08:12:42 3348
The Dalles 07:57:43 -22.7 Dark Down 26.6 214.1 Low 07:42:43 - 08:12:43 3333
Maupin 07:57:42 -23.1 Dark Down 26.9 214.3 Low 07:42:42 - 08:12:42 3314
Madras/Culver 07:57:41 -23.6 Dark Down 27.4 214.4 Low 07:42:41 - 08:12:41 3286
Redmond 07:57:39 -24.0 Dark Down 27.7 214.4 Low 07:42:39 - 08:12:39 3268
Sisters 07:57:42 -23.9 Dark Down 27.9 214.0 Low 07:42:42 - 08:12:42 3264
Bend 07:57:39 -24.2 Dark Down 28.0 214.4 Low 07:42:39 - 08:12:39 3255
Oregon Observatory 07:57:39 -24.4 Dark Down 28.2 214.3 Low 07:42:39 - 08:12:39 3245
La Pine/Gilchrist 07:57:40 -24.6 Dark Down 28.3 214.3 Low 07:42:40 - 08:12:40 3234
North Lake 07:57:35 -25.0 Dark Down 28.5 215.0 Low 07:42:35 - 08:12:35 3218
Paisley 07:57:33 -25.6 Dark Down 28.8 215.5 Low 07:42:33 - 08:12:33 3193
Niwot 07:56:37 -26.7 Dark Down 22.9 230.5 Low 07:41:37 - 08:11:37 3184
Chiloquin 07:57:37 -25.7 Dark Down 29.4 214.3 Low 07:42:37 - 08:12:37 3171
Lakeview 07:57:32 -26.1 Dark Down 29.1 215.9 Low 07:42:32 - 08:12:32 3169
Klamath Falls 07:57:37 -26.0 Dark Down 29.7 214.4 Low 07:42:37 - 08:12:37 3153
Tulelake 07:57:34 -26.3 Dark Down 29.8 214.8 Low 07:42:34 - 08:12:34 3142
Cedarville 07:57:29 -26.7 Dark Down 29.6 216.3 Low 07:42:29 - 08:12:29 3135
Fall River/Burney 07:57:32 -27.2 Dark Down 30.5 215.2 Up 07:42:32 - 08:12:32 3093
Susanville 07:57:27 -27.8 Dark Down 30.7 216.2 Up 07:42:27 - 08:12:27 3066
Gimple 07:57:28 -28.1 Dark Down 31.0 216.0 Up 07:42:28 - 08:12:28 3048
Greenville 07:57:28 -28.1 Dark Down 31.0 216.0 Up 07:42:28 - 08:12:28 3047
Quincy 07:57:28 -28.3 Dark Down 31.2 216.0 Up 07:42:28 - 08:12:28 3035
Portola 07:57:25 -28.4 Dark Down 31.1 216.6 Up 07:42:25 - 08:12:25 3034
Reno 07:57:22 -28.7 Dark Down 31.0 217.3 Up 07:42:22 - 08:12:22 3026
Carson City 07:57:21 -29.1 Dark Down 31.3 217.4 Up 07:42:21 - 08:12:21 3006
Yerington 07:57:19 -29.3 Dark Down 31.1 218.1 Up 07:42:19 - 08:12:19 3002
Gardnerville 07:57:21 -29.3 Dark Down 31.4 217.6 Up 07:42:21 - 08:12:21 2992
Hawthorne 07:57:16 -29.7 Dark Down 31.2 218.8 Up 07:42:16 - 08:12:16 2980
Tonopah 07:57:09 -30.1 Dark Down 30.9 220.4 Up 07:42:09 - 08:12:09 2968
Lee Vining 07:57:15 -30.3 Dark Down 31.9 218.6 Up 07:42:15 - 08:12:15 2941
Bishop 07:57:12 -30.9 Dark Down 32.0 219.5 Up 07:42:12 - 08:12:12 2912
Beatty 07:57:05 -31.3 Dark Down 31.6 221.3 Up 07:42:05 - 08:12:05 2902
Indian Springs 07:57:00 -31.5 Dark Down 31.2 222.4 Up 07:42:00 - 08:12:00 2893
Lone Pine 07:57:09 -31.6 Dark Down 32.5 220.1 Up 07:42:09 - 08:12:09 2869
Henderson 07:56:56 -32.0 Dark Down 31.2 223.3 Up 07:41:56 - 08:11:56 2866
Patrick 07:56:50 -32.6 Dark Down 31.1 224.6 Up 07:41:50 - 08:11:50 2838
Searchlight/Boulder City 07:56:55 -32.6 Dark Down 31.6 223.6 Up 07:41:55 - 08:11:55 2831
DCO 07:56:47 -32.8 Dark Down 30.9 225.3 Up 07:41:47 - 08:11:47 2825
Kingman/Dolan Springs 07:56:50 -32.8 Dark Down 31.4 224.5 Up 07:41:50 - 08:11:50 2822
Laughlin/Bullhead City 07:56:52 -32.9 Dark Down 31.7 224.0 Up 07:41:52 - 08:11:52 2815
Mohave Valley 07:56:52 -33.1 Dark Down 31.9 224.1 Up 07:41:52 - 08:11:52 2797
Lake Havasu City 07:56:49 -33.5 Dark Down 32.0 224.5 Up 07:41:49 - 08:11:49 2773
CPSLO 07:57:14 -32.9 Dark Down 34.8 218.1 Up 07:42:14 - 08:12:14 2753
Parker 07:56:48 -33.9 Dark Down 32.2 224.7 Up 07:41:48 - 08:11:48 2751
Blythe 07:56:47 -34.4 Dark Down 32.8 224.7 Up 07:41:47 - 08:11:47 2713
Wildwood 07:57:03 -34.2 Dark Down 34.7 220.6 Up 07:42:03 - 08:12:03 2699
Idyllwild 07:56:56 -34.4 Dark Down 33.9 222.6 Up 07:41:56 - 08:11:56 2699
Calipatria 07:56:49 -35.0 Dark Down 33.7 224.0 Up 07:41:49 - 08:11:49 2669
Yuma 07:56:45 -35.3 Dark Down 33.5 225.1 Up 07:41:45 - 08:11:45 2650

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 07:58UT)
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  0.14 162
129772         14:20:17.6 -11:25:19 16.4       162
Positions are for J2000

Event circumstances last updated at 2017/06/02 16:23:58 UT

Marc W. Buie, Southwest Research Institute

RECON