RECON: TNO occultation with 06QJ181

Event between 06QJ181 and star GA1060:01181417 with event index number of 183418

Geocentric closest approach at 2019/04/06 04:34:11 UTC

J2000 position of star is 05:42:10.8 +17:07:47
Equinox of date position of star is 05:43:16.4 +17:08:15
Stellar brightness G=16.4, use SENSEUP=128
Star is 60 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.2

[RECON map]
TNO is 32.3 AU from the Sun and 32.6 AU from the Earth.
The TNO is moving 15.8 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 237 seconds.
The 1-sigma cross-track error in the shadow position is 1970 km.
The sky-plane scale is 23645.2 km/arcsec.

The TNO has an absolute magnitude Hv=6.9
Diameter=245.5 km assuming a 5% albedo -- 15.6 sec chord
Diameter=100.2 km assuming a 30% albedo -- 6.4 sec chord
Dynamical classification is 3:1EE+3:1II
 
 
 
 
 
 

Star training set for 06QJ181, (2019/04/06 04:34UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:12.9 +07:24:33  0.4 10.23  63
Bellatrix      05:26:09.9 +06:21:56  1.6 11.56  56
126 Tau        05:42:24.5 +16:32:32  4.6  0.63  60
PPM 121255     05:41:55.4 +17:12:17  8.4  0.34  60
PPM 121273     05:42:45.2 +17:05:12  9.9  0.14  60
06QJ181        05:43:18.0 +17:08:16 16.4        60
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 3.8 sigma about the mid-time.
The median site spacing is 20.5 km RECON observability=1.0 and success probability=10.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 04:38:16 -18.9 Dark Down 33.0 257.0 Up 04:23:16 - 04:53:16 -2683
Summerland 04:38:15 -18.7 Dark Down 33.2 256.7 Up 04:23:15 - 04:53:15 -2693
Penticton 04:38:17 -19.0 Dark Down 33.1 257.1 Up 04:23:17 - 04:53:17 -2718
Okanagan Falls 04:38:18 -19.1 Dark Down 33.2 257.2 Up 04:23:18 - 04:53:18 -2735
Oliver 04:38:18 -19.2 Dark Down 33.2 257.3 Up 04:23:18 - 04:53:18 -2749
Anarchist Mountain Observatory 04:38:20 -19.4 Dark Down 33.1 257.6 Up 04:23:20 - 04:53:20 -2761
Oroville 04:38:20 -19.4 Dark Down 33.2 257.6 Up 04:23:20 - 04:53:20 -2769
Tonasket 04:38:21 -19.5 Dark Down 33.2 257.7 Up 04:23:21 - 04:53:21 -2789
Okanogan 04:38:23 -19.7 Dark Down 33.4 257.8 Up 04:23:23 - 04:53:23 -2822
Brewster 04:38:23 -19.7 Dark Down 33.6 257.8 Up 04:23:23 - 04:53:23 -2849
Manson/Chelan 04:38:22 -19.6 Dark Down 33.9 257.7 Up 04:23:22 - 04:53:22 -2873
Entiat 04:38:23 -19.7 Dark Down 34.0 257.8 Up 04:23:23 - 04:53:23 -2894
Wenatchee 04:38:23 -19.8 Dark Down 34.1 257.8 Up 04:23:23 - 04:53:23 -2919
Ellensburg 04:38:25 -19.9 Dark Down 34.3 257.9 Up 04:23:25 - 04:53:25 -2960
Yakima 04:38:26 -20.1 Dark Down 34.4 258.2 Up 04:23:26 - 04:53:26 -2997
Pasco 04:38:31 -21.2 Dark Down 33.5 259.6 Up 04:23:31 - 04:53:31 -3005
Toppenish/White Swan 04:38:28 -20.4 Dark Down 34.3 258.5 Up 04:23:28 - 04:53:28 -3014
PNWRO 04:38:33 -21.4 Dark Down 33.4 260.0 Up 04:23:33 - 04:53:33 -3024
George/Umatilla 04:38:32 -21.2 Dark Down 33.7 259.7 Up 04:23:32 - 04:53:32 -3039
Goldendale 04:38:29 -20.4 Dark Down 34.7 258.5 Up 04:23:29 - 04:53:29 -3072
The Dalles 04:38:29 -20.3 Dark Down 35.0 258.4 Up 04:23:29 - 04:53:29 -3098
Maupin 04:38:31 -20.6 Dark Down 35.0 258.8 Up 04:23:31 - 04:53:31 -3135
Madras/Culver 04:38:32 -20.9 Dark Down 35.2 259.1 Up 04:23:32 - 04:53:32 -3187
Redmond 04:38:33 -21.1 Dark Down 35.3 259.3 Up 04:23:33 - 04:53:33 -3221
Sisters 04:38:32 -20.8 Dark Down 35.5 259.0 Up 04:23:32 - 04:53:32 -3225
Bend 04:38:34 -21.1 Dark Down 35.4 259.4 Up 04:23:34 - 04:53:34 -3243
Oregon Observatory 04:38:34 -21.1 Dark Down 35.5 259.4 Up 04:23:34 - 04:53:34 -3262
La Pine/Gilchrist 04:38:35 -21.2 Dark Down 35.6 259.5 Up 04:23:35 - 04:53:35 -3282
Niwot 04:39:27 -33.0 Dark Down 23.5 273.0 Low 04:24:27 - 04:54:27 -3307
North Lake 04:38:39 -21.8 Dark Down 35.2 260.3 Up 04:23:39 - 04:53:39 -3314
Paisley 04:38:41 -22.3 Dark Down 35.1 260.9 Up 04:23:41 - 04:53:41 -3360
Chiloquin 04:38:37 -21.6 Dark Down 36.0 260.0 Up 04:23:37 - 04:53:37 -3394
Lakeview 04:38:43 -22.7 Dark Down 35.0 261.4 Up 04:23:43 - 04:53:43 -3405
Klamath Falls 04:38:39 -21.8 Dark Down 36.0 260.3 Up 04:23:39 - 04:53:39 -3425
Tulelake 04:38:41 -22.1 Dark Down 35.9 260.7 Up 04:23:41 - 04:53:41 -3446
Cedarville 04:38:47 -23.2 Dark Down 34.9 262.0 Up 04:23:47 - 04:53:47 -3465
Fall River/Burney 04:38:44 -22.7 Dark Down 35.9 261.5 Up 04:23:44 - 04:53:44 -3532
Susanville 04:38:48 -23.5 Dark Down 35.4 262.5 Up 04:23:48 - 04:53:48 -3581
Gimple 04:38:49 -23.5 Dark Down 35.6 262.5 Up 04:23:49 - 04:53:49 -3611
Greenville 04:38:49 -23.4 Dark Down 35.7 262.4 Up 04:23:49 - 04:53:49 -3613
Quincy 04:38:49 -23.6 Dark Down 35.7 262.6 Up 04:23:49 - 04:53:49 -3632
Portola 04:38:51 -23.9 Dark Down 35.4 263.0 Up 04:23:51 - 04:53:51 -3636
Reno 04:38:54 -24.5 Dark Down 34.9 263.7 Up 04:23:54 - 04:53:54 -3651
Carson City 04:38:55 -24.7 Dark Down 34.9 263.9 Up 04:23:55 - 04:53:55 -3686
Yerington 04:38:58 -25.2 Dark Down 34.4 264.5 Up 04:23:58 - 04:53:58 -3693
Gardnerville 04:38:56 -24.9 Dark Down 34.9 264.1 Up 04:23:56 - 04:53:56 -3709
Hawthorne 04:39:01 -25.9 Dark Down 34.0 265.2 Up 04:24:01 - 04:54:01 -3729
Tonopah 04:39:07 -27.1 Dark Down 33.0 266.5 Up 04:24:07 - 04:54:07 -3749
Lee Vining 04:39:01 -25.8 Dark Down 34.5 265.3 Up 04:24:01 - 04:54:01 -3794
Bishop 04:39:06 -26.7 Dark Down 33.9 266.2 Up 04:24:06 - 04:54:06 -3840
Beatty 04:39:12 -28.0 Dark Down 32.6 267.5 Up 04:24:12 - 04:54:12 -3854
Indian Springs 04:39:16 -28.9 Dark Down 31.8 268.4 Up 04:24:16 - 04:54:16 -3865
Henderson 04:39:20 -29.7 Dark Down 31.2 269.1 Up 04:24:20 - 04:54:20 -3904
Lone Pine 04:39:09 -27.3 Dark Down 33.7 266.9 Up 04:24:09 - 04:54:09 -3909
Patrick 04:39:25 -30.8 Dark Down 30.3 270.2 Up 04:24:25 - 04:54:25 -3944
DCO 04:39:27 -31.5 Dark Down 29.7 270.8 Low 04:24:27 - 04:54:27 -3959
Searchlight/Boulder City 04:39:22 -30.1 Dark Down 31.2 269.5 Up 04:24:22 - 04:54:22 -3960
Kingman/Dolan Springs 04:39:25 -30.8 Dark Down 30.4 270.2 Up 04:24:25 - 04:54:25 -3970
Laughlin/Bullhead City 04:39:23 -30.5 Dark Down 30.9 269.9 Up 04:24:23 - 04:54:23 -3983
Mohave Valley 04:39:24 -30.6 Dark Down 30.9 270.1 Up 04:24:24 - 04:54:24 -4010
Lake Havasu City 04:39:26 -31.0 Dark Down 30.7 270.5 Up 04:24:26 - 04:54:26 -4044
Parker 04:39:27 -31.3 Dark Down 30.6 270.7 Up 04:24:27 - 04:54:27 -4079
CPSLO 04:39:05 -26.2 Dark Down 35.9 266.2 Up 04:24:05 - 04:54:05 -4087
Blythe 04:39:28 -31.4 Dark Down 30.9 270.8 Up 04:24:28 - 04:54:28 -4138
Idyllwild 04:39:22 -29.8 Dark Down 32.6 269.6 Up 04:24:22 - 04:54:22 -4170
Wildwood 04:39:15 -28.3 Dark Down 34.2 268.3 Up 04:24:15 - 04:54:15 -4171
Calipatria 04:39:27 -31.0 Dark Down 31.6 270.6 Up 04:24:27 - 04:54:27 -4207
Yuma 04:39:31 -31.9 Dark Down 30.9 271.4 Up 04:24:31 - 04:54:31 -4232

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 06QJ181, (2019/04/06 04:34UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 10.23  63
Bellatrix      05:25:07.8 +06:20:58  1.6 11.56  56
126 Tau        05:41:17.7 +16:32:02  4.6  0.63  60
PPM 121255     05:40:48.3 +17:11:45  8.4  0.34  60
PPM 121273     05:41:38.1 +17:04:42  9.9  0.14  60
06QJ181        05:42:10.8 +17:07:47 16.4        60
Positions are for J2000

Event circumstances last updated at 2018/10/24 21:14:44 UT

Marc W. Buie, Southwest Research Institute

RECON