RECON: TNO occultation with 469442

Event between (469442) 02GG166 and star UC4-335-078443 with event index number of 196913

Geocentric closest approach at 2019/06/22 07:26:27 UTC

J2000 position of star is 15:37:05.0 -23:04:13
Equinox of date position of star is 15:38:08.5 -23:07:42
Stellar brightness R=14.2, use SENSEUP=64
Star is 89 degrees from the moon. Moon is 78% illuminated.
TNO apparent brightness V=20.7

[RECON map]
TNO is 18.5 AU from the Sun and 17.7 AU from the Earth.
The TNO is moving 17.2 km/sec on the sky relative to the star, or, 4.8 arcsec/hr.
The 1-sigma error in the time of the event is 78 seconds.
The 1-sigma cross-track error in the shadow position is 871 km.
The sky-plane scale is 12806.8 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=158.5 km assuming a 5% albedo -- 9.2 sec chord
Diameter=64.7 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 469442, (2019/06/22 07:26UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.3 -26:28:25  0.9 12.34  77
7Del Sco       16:01:29.3 -22:40:32  2.3  5.37  84
PPM 264469     15:38:57.0 -23:12:18  5.8  0.18  89
PPM 264491     15:39:53.5 -23:06:43  7.1  0.38  89
PPM 264445     15:37:52.9 -23:00:16  9.5  0.15  89
469442         15:38:13.9 -23:08:00 14.2        89
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 5.0 sigma about the mid-time.
The median site spacing is 11.4 km RECON observability=0.6 and success probability=0.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 07:25:57 -17.2 AT Up 13.8 206.4 Really Low 07:18:55 - 07:32:59 4023
Tonasket 07:25:55 -17.5 AT Up 14.0 206.4 Really Low 07:18:53 - 07:32:57 4017
Okanogan 07:25:56 -17.8 AT Up 14.3 206.3 Really Low 07:18:54 - 07:32:58 4007
Brewster 07:25:56 -18.0 Dark Up 14.6 206.2 Really Low 07:18:54 - 07:32:58 3999
Manson/Chelan 07:25:57 -18.2 Dark Up 14.9 205.9 Really Low 07:18:55 - 07:32:59 3991
Entiat 07:25:56 -18.4 Dark Up 15.2 205.8 Really Low 07:18:54 - 07:32:58 3985
Wenatchee 07:25:56 -18.7 Dark Up 15.4 205.8 Really Low 07:18:54 - 07:32:58 3977
Ellensburg 07:25:55 -19.0 Dark Up 15.9 205.6 Really Low 07:18:53 - 07:32:57 3963
Yakima 07:25:55 -19.4 Dark Up 16.2 205.6 Really Low 07:18:53 - 07:32:57 3950
Toppenish/White Swan 07:25:53 -19.7 Dark Up 16.4 205.8 Really Low 07:18:51 - 07:32:55 3944
Pasco 07:25:48 -19.9 Dark Up 16.1 207.0 Really Low 07:18:46 - 07:32:50 3943
PNWRO 07:25:47 -20.2 Dark Up 16.2 207.2 Really Low 07:18:45 - 07:32:49 3935
George/Umatilla 07:25:48 -20.2 Dark Up 16.5 206.8 Really Low 07:18:46 - 07:32:50 3931
Goldendale 07:25:54 -20.2 Dark Up 17.0 205.5 Really Low 07:18:52 - 07:32:56 3924
The Dalles 07:25:55 -20.3 Dark Up 17.3 205.2 Really Low 07:18:53 - 07:32:57 3915
Maupin 07:25:53 -20.8 Dark Up 17.7 205.3 Really Low 07:18:51 - 07:32:55 3901
Madras/Culver 07:25:52 -21.3 Dark Up 18.2 205.4 Really Low 07:18:50 - 07:32:54 3881
Redmond 07:25:51 -21.7 Dark Up 18.5 205.4 Really Low 07:18:49 - 07:32:53 3868
Sisters 07:25:53 -21.6 Dark Up 18.6 205.0 Really Low 07:18:51 - 07:32:55 3868
Bend 07:25:51 -21.8 Dark Up 18.7 205.3 Really Low 07:18:49 - 07:32:53 3860
Oregon Observatory 07:25:51 -22.0 Dark Up 18.9 205.2 Really Low 07:18:49 - 07:32:53 3853
La Pine/Gilchrist 07:25:51 -22.2 Dark Up 19.1 205.2 Really Low 07:18:49 - 07:32:53 3845
North Lake 07:25:48 -22.7 Dark Up 19.4 205.8 Really Low 07:18:46 - 07:32:50 3831
Paisley 07:25:44 -23.3 Dark Up 19.7 206.2 Really Low 07:18:42 - 07:32:46 3810
Chiloquin 07:25:50 -23.2 Dark Up 20.3 205.0 Low 07:18:48 - 07:32:52 3801
Lakeview 07:25:43 -23.8 Dark Up 20.1 206.4 Low 07:18:41 - 07:32:45 3791
Klamath Falls 07:25:49 -23.6 Dark Up 20.6 205.1 Low 07:18:47 - 07:32:51 3787
Tulelake 07:25:47 -23.9 Dark Up 20.7 205.4 Low 07:18:45 - 07:32:49 3778
Cedarville 07:25:40 -24.5 Dark Up 20.7 206.7 Low 07:18:38 - 07:32:42 3764
Fall River/Burney 07:25:44 -24.8 Dark Up 21.5 205.7 Low 07:18:42 - 07:32:46 3740
Susanville 07:25:39 -25.5 Dark Up 21.8 206.4 Low 07:18:37 - 07:32:41 3715
Gimple 07:25:40 -25.8 Dark Up 22.1 206.3 Low 07:18:38 - 07:32:42 3703
Greenville 07:25:40 -25.7 Dark Up 22.2 206.2 Low 07:18:38 - 07:32:42 3702
Quincy 07:25:40 -25.9 Dark Up 22.4 206.2 Low 07:18:38 - 07:32:42 3693
Portola 07:25:37 -26.1 Dark Up 22.3 206.7 Low 07:18:35 - 07:32:39 3689
Reno 07:25:33 -26.5 Dark Up 22.3 207.3 Low 07:18:31 - 07:32:35 3679
Niwot 07:24:35 -26.3 Dark Up 15.7 219.7 Really Low 07:17:33 - 07:31:37 3676
Carson City 07:25:33 -26.8 Dark Up 22.6 207.4 Low 07:18:31 - 07:32:35 3663
Yerington 07:25:29 -27.1 Dark Up 22.6 208.0 Low 07:18:27 - 07:32:31 3656
Gardnerville 07:25:32 -27.1 Dark Up 22.8 207.5 Low 07:18:30 - 07:32:34 3652
Hawthorne 07:25:26 -27.6 Dark Up 22.8 208.6 Low 07:18:24 - 07:32:28 3636
Tonopah 07:25:18 -28.2 Dark Up 22.7 209.9 Low 07:18:16 - 07:32:20 3616
Lee Vining 07:25:27 -28.1 Dark Up 23.5 208.3 Low 07:18:25 - 07:32:29 3608
Bishop 07:25:22 -28.8 Dark Up 23.7 209.0 Low 07:18:20 - 07:32:24 3580
Beatty 07:25:14 -29.4 Dark Up 23.5 210.6 Low 07:18:12 - 07:32:16 3560
Indian Springs 07:25:07 -29.8 Dark Up 23.3 211.6 Low 07:18:05 - 07:32:09 3544
Lone Pine 07:25:18 -29.6 Dark Up 24.3 209.5 Low 07:18:16 - 07:32:20 3544
Henderson 07:25:03 -30.4 Dark Up 23.5 212.3 Low 07:18:01 - 07:32:05 3517
Searchlight/Boulder City 07:25:01 -31.0 Dark Up 24.0 212.5 Low 07:17:59 - 07:32:03 3488
Patrick 07:24:56 -31.1 Dark Up 23.6 213.4 Low 07:17:54 - 07:31:58 3484
Kingman/Dolan Springs 07:24:57 -31.3 Dark Up 23.8 213.3 Low 07:17:55 - 07:31:59 3473
Laughlin/Bullhead City 07:24:59 -31.3 Dark Up 24.1 212.9 Low 07:17:57 - 07:32:01 3472
CPSLO 07:25:27 -30.5 Dark Up 26.4 207.4 Low 07:18:25 - 07:32:29 3470
DCO 07:24:52 -31.4 Dark Up 23.5 214.1 Low 07:17:50 - 07:31:54 3467
Mohave Valley 07:24:58 -31.6 Dark Up 24.3 212.9 Low 07:17:56 - 07:32:00 3458
Lake Havasu City 07:24:56 -32.0 Dark Up 24.5 213.3 Low 07:17:54 - 07:31:58 3436
Parker 07:24:55 -32.3 Dark Up 24.8 213.4 Low 07:17:53 - 07:31:57 3417
Wildwood 07:25:14 -32.0 Dark Up 26.7 209.6 Low 07:18:12 - 07:32:16 3411
Idyllwild 07:25:04 -32.6 Dark Up 26.2 211.3 Low 07:18:02 - 07:32:06 3395
Blythe 07:24:55 -32.8 Dark Up 25.4 213.2 Low 07:17:53 - 07:31:57 3389
Calipatria 07:24:58 -33.3 Dark Up 26.2 212.5 Low 07:17:56 - 07:32:00 3362
Yuma 07:24:53 -33.8 Dark Up 26.2 213.4 Low 07:17:51 - 07:31:55 3337

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 469442, (2019/06/22 07:26UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 12.34  77
7Del Sco       16:00:20.0 -22:37:18  2.3  5.37  84
PPM 264469     15:37:48.0 -23:08:31  5.8  0.18  89
PPM 264491     15:38:44.6 -23:02:58  7.1  0.38  89
PPM 264445     15:36:44.0 -22:56:28  9.5  0.15  89
469442         15:37:05.0 -23:04:13 14.2        89
Positions are for J2000

Event circumstances last updated at 2017/12/06 19:03:41 UT

Marc W. Buie, Southwest Research Institute

RECON