RECON: TNO occultation with 10VR11

Event between 10VR11 and star UC4-542-012999 with event index number of 232317

Geocentric closest approach at 2019/12/04 03:54:28 UTC

J2000 position of star is 05:14:39.2 +18:18:20
Equinox of date position of star is 05:15:42.3 +18:19:30
Stellar brightness R=14.4, use SENSEUP=128
Star is 99 degrees from the moon. Moon is 49% illuminated.
TNO apparent brightness V=21.1

[RECON map]
TNO is 36.8 AU from the Sun and 35.8 AU from the Earth.
The TNO is moving 25.6 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 118 seconds.
The 1-sigma cross-track error in the shadow position is 2330 km.
The sky-plane scale is 25950.3 km/arcsec.

The TNO has an absolute magnitude Hv=5.5
Diameter=472.1 km assuming a 5% albedo -- 18.4 sec chord
Diameter=192.7 km assuming a 30% albedo -- 7.5 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 10VR11, (2019/12/04 03:54UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.0 +16:32:52  0.8  9.41  89
Alnath         05:27:33.2 +28:37:21  1.6 10.64 103
104 Tau        05:08:37.7 +18:40:13  5.6  1.74  97
PPM 120798     05:18:41.2 +17:41:00  8.5  0.94  99
PPM 120758     05:16:16.0 +18:05:47 10.0  0.25  99
10VR11         05:15:49.1 +18:19:37 14.4        99
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 20.7 km RECON observability=1.0 and success probability=12.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 03:57:00 -37.6 Dark Up 29.3 95.5 Low 03:46:42 - 04:07:18 3871
Tonasket 03:57:01 -37.6 Dark Up 29.3 95.3 Low 03:46:43 - 04:07:19 3852
Okanogan 03:57:02 -37.6 Dark Up 29.2 95.0 Low 03:46:44 - 04:07:20 3828
Brewster 03:57:03 -37.5 Dark Up 29.1 94.7 Low 03:46:45 - 04:07:21 3810
Manson/Chelan 03:57:04 -37.3 Dark Up 28.9 94.3 Low 03:46:46 - 04:07:22 3800
Entiat 03:57:05 -37.3 Dark Up 28.9 94.2 Low 03:46:47 - 04:07:23 3784
Wenatchee 03:57:06 -37.2 Dark Up 28.8 93.9 Low 03:46:48 - 04:07:24 3765
Ellensburg 03:57:07 -37.1 Dark Up 28.7 93.6 Low 03:46:49 - 04:07:25 3735
Yakima 03:57:08 -37.2 Dark Up 28.7 93.3 Low 03:46:50 - 04:07:26 3702
Toppenish/White Swan 03:57:08 -37.3 Dark Up 28.8 93.3 Low 03:46:50 - 04:07:26 3680
Goldendale 03:57:11 -37.1 Dark Up 28.6 92.7 Low 03:46:53 - 04:07:29 3643
Pasco 03:57:08 -38.2 Dark Up 29.7 94.2 Low 03:46:50 - 04:07:26 3642
The Dalles 03:57:12 -36.9 Dark Up 28.3 92.3 Low 03:46:54 - 04:07:30 3632
George/Umatilla 03:57:09 -38.1 Dark Up 29.6 93.9 Low 03:46:51 - 04:07:27 3619
PNWRO 03:57:08 -38.4 Dark Up 29.9 94.2 Low 03:46:50 - 04:07:26 3616
Maupin 03:57:13 -37.0 Dark Up 28.4 92.2 Low 03:46:55 - 04:07:31 3594
Madras/Culver 03:57:15 -37.0 Dark Up 28.4 91.9 Low 03:46:57 - 04:07:33 3549
Sisters 03:57:16 -36.7 Dark Up 28.1 91.4 Low 03:46:58 - 04:07:34 3530
Redmond 03:57:15 -37.0 Dark Up 28.4 91.6 Low 03:46:57 - 04:07:33 3519
Bend 03:57:16 -36.9 Dark Up 28.3 91.4 Low 03:46:58 - 04:07:34 3504
Oregon Observatory 03:57:17 -36.8 Dark Up 28.2 91.2 Low 03:46:59 - 04:07:35 3492
La Pine/Gilchrist 03:57:18 -36.8 Dark Up 28.2 91.1 Low 03:47:00 - 04:07:36 3476
North Lake 03:57:18 -37.3 Dark Up 28.6 91.3 Low 03:47:00 - 04:07:36 3424
Chiloquin 03:57:21 -36.6 Dark Up 27.9 90.3 Low 03:47:03 - 04:07:39 3387
Paisley 03:57:19 -37.6 Dark Up 28.9 91.2 Low 03:47:01 - 04:07:37 3368
Klamath Falls 03:57:22 -36.7 Dark Up 28.0 90.1 Low 03:47:04 - 04:07:40 3355
Tulelake 03:57:22 -36.9 Dark Up 28.2 90.2 Low 03:47:04 - 04:07:40 3325
Lakeview 03:57:20 -37.7 Dark Up 29.1 91.1 Low 03:47:02 - 04:07:38 3318
Cedarville 03:57:22 -37.9 Dark Up 29.2 90.8 Low 03:47:04 - 04:07:40 3256
Fall River/Burney 03:57:24 -37.0 Dark Up 28.3 89.8 Low 03:47:06 - 04:07:42 3242
Susanville 03:57:25 -37.6 Dark Up 28.9 89.9 Low 03:47:07 - 04:07:43 3168
Greenville 03:57:26 -37.4 Dark Up 28.6 89.6 Low 03:47:08 - 04:07:44 3150
Gimple 03:57:26 -37.5 Dark Up 28.7 89.6 Low 03:47:08 - 04:07:44 3148
Quincy 03:57:27 -37.4 Dark Up 28.7 89.5 Low 03:47:09 - 04:07:45 3132
Portola 03:57:26 -37.8 Dark Up 29.0 89.7 Low 03:47:08 - 04:07:44 3109
Reno 03:57:26 -38.3 Dark Up 29.5 90.0 Low 03:47:08 - 04:07:44 3069
Carson City 03:57:27 -38.3 Dark Up 29.5 89.8 Low 03:47:09 - 04:07:45 3035
Gardnerville 03:57:28 -38.3 Dark Up 29.6 89.7 Low 03:47:10 - 04:07:46 3012
Yerington 03:57:27 -38.8 Dark Up 30.0 90.1 Up 03:47:09 - 04:07:45 3002
Hawthorne 03:57:27 -39.2 Dark Up 30.4 90.1 Up 03:47:09 - 04:07:45 2946
Lee Vining 03:57:29 -38.9 Dark Up 30.1 89.5 Up 03:47:11 - 04:07:47 2906
Tonopah 03:57:26 -40.4 Dark Up 31.6 90.7 Up 03:47:08 - 04:07:44 2868
Bishop 03:57:29 -39.4 Dark Up 30.6 89.6 Up 03:47:11 - 04:07:47 2832
Niwot 03:57:00 -49.3 Dark Up 40.6 100.4 Up 03:46:42 - 04:07:18 2793
Lone Pine 03:57:31 -39.7 Dark Up 30.9 89.3 Up 03:47:13 - 04:07:49 2752
Beatty 03:57:28 -40.8 Dark Up 31.9 90.3 Up 03:47:10 - 04:07:46 2748
CPSLO 03:57:37 -37.6 Dark Up 28.8 87.1 Low 03:47:19 - 04:07:55 2695
Indian Springs 03:57:27 -41.6 Dark Up 32.8 90.7 Up 03:47:09 - 04:07:45 2691
Henderson 03:57:27 -42.2 Dark Up 33.4 90.8 Up 03:47:09 - 04:07:45 2623
Searchlight/Boulder City 03:57:28 -42.3 Dark Up 33.4 90.5 Up 03:47:10 - 04:07:46 2566
Patrick 03:57:26 -43.1 Dark Up 34.3 91.0 Up 03:47:08 - 04:07:44 2536
Laughlin/Bullhead City 03:57:28 -42.6 Dark Up 33.7 90.5 Up 03:47:10 - 04:07:46 2529
Wildwood 03:57:37 -39.3 Dark Up 30.4 87.6 Up 03:47:19 - 04:07:55 2527
Kingman/Dolan Springs 03:57:27 -43.0 Dark Up 34.1 90.8 Up 03:47:09 - 04:07:45 2519
Mohave Valley 03:57:29 -42.6 Dark Up 33.7 90.3 Up 03:47:11 - 04:07:47 2503
DCO 03:57:26 -43.7 Dark Up 34.9 91.3 Up 03:47:08 - 04:07:44 2489
Lake Havasu City 03:57:29 -42.8 Dark Up 33.9 90.2 Up 03:47:11 - 04:07:47 2458
Idyllwild 03:57:35 -40.8 Dark Up 32.0 88.4 Up 03:47:17 - 04:07:53 2444
Parker 03:57:29 -42.8 Dark Up 34.0 89.9 Up 03:47:11 - 04:07:47 2423
Blythe 03:57:32 -42.6 Dark Up 33.7 89.4 Up 03:47:14 - 04:07:50 2379
Calipatria 03:57:34 -41.8 Dark Up 32.9 88.6 Up 03:47:16 - 04:07:52 2354
Yuma 03:57:33 -42.5 Dark Up 33.7 88.8 Up 03:47:15 - 04:07:51 2289

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 10VR11, (2019/12/04 03:54UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  9.41  89
Alnath         05:26:17.5 +28:36:24  1.6 10.64 103
104 Tau        05:07:27.7 +18:38:43  5.6  1.74  97
PPM 120798     05:17:31.6 +17:39:47  8.5  0.94  99
PPM 120758     05:15:06.2 +18:04:31 10.0  0.25  99
10VR11         05:14:39.2 +18:18:20 14.4        98
Positions are for J2000

Event circumstances last updated at 2018/01/01 18:27:34 UT

Marc W. Buie, Southwest Research Institute

RECON