RECON: TNO occultation with 11JY31

Event between 11JY31 and star GA0680:34599334 with event index number of 203339

Geocentric closest approach at 2019/06/05 07:11:22 UTC

J2000 position of star is 19:15:54.4 -20:04:53
Equinox of date position of star is 19:16:59.7 -20:02:52
Stellar brightness G=15.7, use SENSEUP=128
Star is 171 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=25.1

[RECON map]
TNO is 42.4 AU from the Sun and 41.6 AU from the Earth.
The TNO is moving 19.6 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 1083 seconds.
The 1-sigma cross-track error in the shadow position is 2120 km.
The sky-plane scale is 30142.5 km/arcsec.

The TNO has an absolute magnitude Hv=8.8
Diameter=103.8 km assuming a 5% albedo -- 5.3 sec chord
Diameter=42.4 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 11JY31, (2019/06/05 07:11UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.1 -26:28:25  0.9 38.60 151
Nunki          18:56:28.1 -26:16:15  2.0  7.82 174
43 Sgr         19:18:46.2 -18:55:01  4.9  1.20 170
PPM 235722     19:16:34.9 -19:45:07  8.1  0.31 171
PPM 269520     19:16:00.1 -19:59:57  9.6  0.25 171
11JY31         19:17:03.1 -20:02:45 15.7       171
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 0.8 sigma about the mid-time.
The median site spacing is 17.6 km RECON observability=0.2 and success probability=3.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 07:09:39 -17.2 AT Down 8.6 135.4 Really Low 06:54:39 - 07:24:39 4186
Oroville 07:09:40 -17.8 AT Down 9.1 135.4 Really Low 06:54:40 - 07:24:40 4162
Tonasket 07:09:41 -18.0 Dark Down 9.2 135.4 Really Low 06:54:41 - 07:24:41 4152
Okanogan 07:09:43 -18.3 Dark Down 9.4 135.2 Really Low 06:54:43 - 07:24:43 4135
Brewster 07:09:43 -18.6 Dark Down 9.5 135.0 Really Low 06:54:43 - 07:24:43 4120
Manson/Chelan 07:09:45 -18.7 Dark Down 9.5 134.7 Really Low 06:54:45 - 07:24:45 4106
Entiat 07:09:47 -18.9 Dark Down 9.6 134.6 Really Low 06:54:47 - 07:24:47 4095
Wenatchee 07:09:47 -19.2 Dark Down 9.7 134.5 Really Low 06:54:47 - 07:24:47 4082
Ellensburg 07:09:50 -19.5 Dark Down 9.9 134.3 Really Low 06:54:50 - 07:24:50 4059
Pasco 07:09:48 -20.5 Dark Down 11.1 135.4 Really Low 06:54:48 - 07:24:48 4045
Yakima 07:09:51 -19.9 Dark Down 10.2 134.2 Really Low 06:54:51 - 07:24:51 4040
PNWRO 07:09:48 -20.7 Dark Down 11.4 135.5 Really Low 06:54:48 - 07:24:48 4036
Toppenish/White Swan 07:09:51 -20.2 Dark Down 10.4 134.4 Really Low 06:54:51 - 07:24:51 4032
George/Umatilla 07:09:50 -20.8 Dark Down 11.3 135.1 Really Low 06:54:50 - 07:24:50 4026
Goldendale 07:09:54 -20.7 Dark Down 10.6 133.9 Really Low 06:54:54 - 07:24:54 3999
The Dalles 07:09:56 -20.8 Dark Down 10.6 133.6 Really Low 06:54:56 - 07:24:56 3982
Maupin 07:09:57 -21.2 Dark Down 10.9 133.7 Really Low 06:54:57 - 07:24:57 3963
Madras/Culver 07:09:59 -21.8 Dark Down 11.3 133.6 Really Low 06:54:59 - 07:24:59 3935
Redmond 07:10:00 -22.1 Dark Down 11.5 133.5 Really Low 06:55:00 - 07:25:00 3916
Sisters 07:10:01 -22.0 Dark Down 11.3 133.2 Really Low 06:55:01 - 07:25:01 3911
Bend 07:10:01 -22.3 Dark Down 11.6 133.3 Really Low 06:55:01 - 07:25:01 3902
Niwot 07:09:21 -27.3 Dark Down 22.3 146.1 Low 06:54:21 - 07:24:21 3897
Oregon Observatory 07:10:02 -22.4 Dark Down 11.6 133.2 Really Low 06:55:02 - 07:25:02 3891
La Pine/Gilchrist 07:10:03 -22.6 Dark Down 11.7 133.1 Really Low 06:55:03 - 07:25:03 3880
North Lake 07:10:03 -23.2 Dark Down 12.4 133.5 Really Low 06:55:03 - 07:25:03 3866
Paisley 07:10:03 -23.8 Dark Down 12.9 133.7 Really Low 06:55:03 - 07:25:03 3843
Lakeview 07:10:05 -24.3 Dark Down 13.4 133.8 Really Low 06:55:05 - 07:25:05 3818
Chiloquin 07:10:07 -23.7 Dark Down 12.3 132.7 Really Low 06:55:07 - 07:25:07 3814
Klamath Falls 07:10:08 -24.0 Dark Down 12.6 132.7 Really Low 06:55:08 - 07:25:08 3797
Tulelake 07:10:08 -24.3 Dark Down 13.0 132.9 Really Low 06:55:08 - 07:25:08 3787
Cedarville 07:10:06 -25.0 Dark Down 13.9 133.8 Really Low 06:55:06 - 07:25:06 3785
Fall River/Burney 07:10:11 -25.2 Dark Down 13.6 132.8 Really Low 06:55:11 - 07:25:11 3737
Susanville 07:10:11 -26.0 Dark Down 14.5 133.3 Really Low 06:55:11 - 07:25:11 3714
Gimple 07:10:12 -26.2 Dark Down 14.5 133.1 Really Low 06:55:12 - 07:25:12 3694
Greenville 07:10:12 -26.2 Dark Down 14.5 133.0 Really Low 06:55:12 - 07:25:12 3693
Portola 07:10:12 -26.6 Dark Down 15.0 133.3 Really Low 06:55:12 - 07:25:12 3682
Quincy 07:10:14 -26.4 Dark Down 14.6 133.0 Really Low 06:55:14 - 07:25:14 3681
Reno 07:10:11 -27.0 Dark Down 15.5 133.8 Really Low 06:55:11 - 07:25:11 3677
Carson City 07:10:12 -27.3 Dark Down 15.8 133.7 Really Low 06:55:12 - 07:25:12 3656
Yerington 07:10:11 -27.6 Dark Down 16.3 134.2 Really Low 06:55:11 - 07:25:11 3654
Gardnerville 07:10:12 -27.6 Dark Down 16.0 133.7 Really Low 06:55:12 - 07:25:12 3642
Hawthorne 07:10:10 -28.1 Dark Down 16.9 134.5 Really Low 06:55:10 - 07:25:10 3635
Tonopah 07:10:07 -28.8 Dark Down 18.0 135.5 Really Low 06:55:07 - 07:25:07 3629
Lee Vining 07:10:13 -28.6 Dark Down 17.0 134.0 Really Low 06:55:13 - 07:25:13 3593
Bishop 07:10:13 -29.3 Dark Down 17.9 134.4 Really Low 06:55:13 - 07:25:13 3568
Beatty 07:10:09 -30.0 Dark Down 19.1 135.6 Really Low 06:55:09 - 07:25:09 3565
Indian Springs 07:10:06 -30.5 Dark Down 19.9 136.4 Really Low 06:55:06 - 07:25:06 3561
Henderson 07:10:05 -31.1 Dark Down 20.7 136.8 Low 06:55:05 - 07:25:05 3537
Lone Pine 07:10:14 -30.1 Dark Down 18.6 134.5 Really Low 06:55:14 - 07:25:14 3526
Patrick 07:10:03 -31.8 Dark Down 21.8 137.5 Low 06:55:03 - 07:25:03 3514
DCO 07:10:01 -32.2 Dark Down 22.4 138.0 Low 06:55:01 - 07:25:01 3504
Searchlight/Boulder City 07:10:07 -31.6 Dark Down 21.1 136.7 Low 06:55:07 - 07:25:07 3502
Kingman/Dolan Springs 07:10:04 -32.0 Dark Down 21.8 137.3 Low 06:55:04 - 07:25:04 3497
Laughlin/Bullhead City 07:10:06 -32.0 Dark Down 21.6 136.9 Low 06:55:06 - 07:25:06 3488
Mohave Valley 07:10:06 -32.2 Dark Down 21.8 136.8 Low 06:55:06 - 07:25:06 3470
Lake Havasu City 07:10:07 -32.7 Dark Down 22.2 136.9 Low 06:55:07 - 07:25:07 3448
Parker 07:10:08 -33.0 Dark Down 22.5 136.8 Low 06:55:08 - 07:25:08 3425
CPSLO 07:10:26 -30.9 Dark Down 18.0 132.2 Really Low 06:55:26 - 07:25:26 3398
Blythe 07:10:10 -33.5 Dark Down 22.7 136.5 Low 06:55:10 - 07:25:10 3386
Idyllwild 07:10:17 -33.1 Dark Down 21.4 134.8 Low 06:55:17 - 07:25:17 3360
Wildwood 07:10:22 -32.5 Dark Down 20.0 133.5 Low 06:55:22 - 07:25:22 3353
Calipatria 07:10:15 -33.9 Dark Down 22.5 135.6 Low 06:55:15 - 07:25:15 3338
Yuma 07:10:12 -34.4 Dark Down 23.3 136.2 Low 06:55:12 - 07:25:12 3322

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 11JY31, (2019/06/05 07:11UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 38.60 151
Nunki          18:55:15.9 -26:17:49  2.0  7.82 174
43 Sgr         19:17:38.1 -18:57:11  4.9  1.20 170
PPM 235722     19:15:26.3 -19:47:14  8.1  0.31 171
PPM 269520     19:14:51.4 -20:02:03  9.6  0.25 171
11JY31         19:15:54.4 -20:04:53 15.7       171
Positions are for J2000

Event circumstances last updated at 2018/06/11 23:20:17 UT

Marc W. Buie, Southwest Research Institute

RECON