RECON: TNO occultation with 10VR11

Event between 10VR11 and star GA1080:00894750 with event index number of 232317

Geocentric closest approach at 2019/12/04 03:53:07 UTC

J2000 position of star is 05:14:39.2 +18:18:20
Equinox of date position of star is 05:15:43.8 +18:19:32
Stellar brightness G=14.5, 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 121 seconds.
The 1-sigma cross-track error in the shadow position is 2395 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 03:53UT)
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 14.5        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 23.0 km RECON observability=1.0 and success probability=14.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 03:55:37 -37.2 Dark Up 28.9 95.4 Low 03:45:00 - 04:06:14 3286
Oroville 03:55:37 -37.4 Dark Up 29.0 95.2 Low 03:45:00 - 04:06:14 3236
Tonasket 03:55:37 -37.4 Dark Up 29.1 95.1 Low 03:45:00 - 04:06:14 3217
Okanogan 03:55:37 -37.4 Dark Up 29.0 94.8 Low 03:45:00 - 04:06:14 3194
Brewster 03:55:37 -37.3 Dark Up 28.9 94.4 Low 03:45:00 - 04:06:14 3178
Manson/Chelan 03:55:37 -37.0 Dark Up 28.6 94.0 Low 03:45:00 - 04:06:14 3170
Entiat 03:55:37 -37.0 Dark Up 28.6 93.9 Low 03:45:00 - 04:06:14 3154
Wenatchee 03:55:37 -37.0 Dark Up 28.6 93.7 Low 03:45:00 - 04:06:14 3137
Ellensburg 03:55:37 -36.9 Dark Up 28.4 93.3 Low 03:45:00 - 04:06:14 3111
Yakima 03:55:37 -36.9 Dark Up 28.4 93.0 Low 03:45:00 - 04:06:14 3080
Toppenish/White Swan 03:55:37 -37.1 Dark Up 28.6 93.0 Low 03:45:00 - 04:06:14 3060
Goldendale 03:55:37 -36.8 Dark Up 28.3 92.4 Low 03:45:00 - 04:06:14 3029
The Dalles 03:55:37 -36.6 Dark Up 28.1 92.0 Low 03:45:00 - 04:06:14 3021
Pasco 03:55:37 -37.9 Dark Up 29.5 93.9 Low 03:45:00 - 04:06:14 3019
George/Umatilla 03:55:37 -37.8 Dark Up 29.3 93.6 Low 03:45:00 - 04:06:14 2999
PNWRO 03:55:37 -38.1 Dark Up 29.6 94.0 Low 03:45:00 - 04:06:14 2994
Maupin 03:55:37 -36.7 Dark Up 28.1 91.9 Low 03:45:00 - 04:06:14 2988
Madras/Culver 03:55:37 -36.7 Dark Up 28.1 91.6 Low 03:45:00 - 04:06:14 2948
Sisters 03:55:37 -36.4 Dark Up 27.8 91.1 Low 03:45:00 - 04:06:14 2936
Redmond 03:55:37 -36.7 Dark Up 28.1 91.3 Low 03:45:00 - 04:06:14 2924
Bend 03:55:37 -36.6 Dark Up 28.0 91.1 Low 03:45:00 - 04:06:14 2912
Oregon Observatory 03:55:37 -36.5 Dark Up 27.9 90.9 Low 03:45:00 - 04:06:14 2903
La Pine/Gilchrist 03:55:37 -36.5 Dark Up 27.9 90.8 Low 03:45:00 - 04:06:14 2890
North Lake 03:55:37 -37.0 Dark Up 28.3 91.0 Low 03:45:00 - 04:06:14 2842
Paisley 03:55:37 -37.3 Dark Up 28.6 90.9 Low 03:45:00 - 04:06:14 2792
Chiloquin 03:56:01 -36.4 Dark Up 27.7 90.0 Low 03:45:24 - 04:06:38 2752
Lakeview 03:55:37 -37.4 Dark Up 28.7 90.8 Low 03:45:00 - 04:06:14 2750
Klamath Falls 03:56:02 -36.4 Dark Up 27.8 89.9 Low 03:45:25 - 04:06:39 2720
Tulelake 03:56:02 -36.7 Dark Up 28.0 90.0 Low 03:45:25 - 04:06:39 2689
Cedarville 03:56:02 -37.7 Dark Up 29.0 90.6 Low 03:45:25 - 04:06:39 2620
Fall River/Burney 03:56:04 -36.8 Dark Up 28.1 89.5 Low 03:45:27 - 04:06:41 2607
Susanville 03:56:05 -37.4 Dark Up 28.6 89.7 Low 03:45:28 - 04:06:42 2532
Greenville 03:56:06 -37.1 Dark Up 28.4 89.4 Low 03:45:29 - 04:06:43 2515
Gimple 03:56:06 -37.2 Dark Up 28.5 89.4 Low 03:45:29 - 04:06:43 2512
Quincy 03:56:06 -37.1 Dark Up 28.4 89.3 Low 03:45:29 - 04:06:43 2496
Portola 03:56:06 -37.5 Dark Up 28.8 89.5 Low 03:45:29 - 04:06:43 2473
Reno 03:56:06 -38.0 Dark Up 29.3 89.8 Low 03:45:29 - 04:06:43 2433
Carson City 03:56:07 -38.0 Dark Up 29.3 89.6 Low 03:45:30 - 04:06:44 2400
Gardnerville 03:56:07 -38.1 Dark Up 29.3 89.5 Low 03:45:30 - 04:06:44 2376
Yerington 03:56:06 -38.5 Dark Up 29.8 89.9 Low 03:45:29 - 04:06:43 2367
Hawthorne 03:56:07 -39.0 Dark Up 30.2 89.9 Up 03:45:30 - 04:06:44 2311
Lee Vining 03:56:09 -38.6 Dark Up 29.8 89.3 Low 03:45:32 - 04:06:46 2271
Tonopah 03:56:06 -40.1 Dark Up 31.3 90.5 Up 03:45:29 - 04:06:43 2233
Bishop 03:56:09 -39.2 Dark Up 30.4 89.4 Up 03:45:32 - 04:06:46 2197
Niwot 03:55:37 -49.0 Dark Up 40.3 100.1 Up 03:45:00 - 04:06:14 2159
Lone Pine 03:56:10 -39.5 Dark Up 30.6 89.1 Up 03:45:33 - 04:06:47 2117
Beatty 03:56:08 -40.5 Dark Up 31.7 90.1 Up 03:45:31 - 04:06:45 2113
CPSLO 03:56:17 -37.3 Dark Up 28.5 86.9 Low 03:45:40 - 04:06:54 2061
Indian Springs 03:56:07 -41.4 Dark Up 32.5 90.5 Up 03:45:30 - 04:06:44 2056
Henderson 03:56:07 -41.9 Dark Up 33.1 90.6 Up 03:45:30 - 04:06:44 1988
Searchlight/Boulder City 03:56:08 -42.0 Dark Up 33.2 90.3 Up 03:45:31 - 04:06:45 1931
Patrick 03:56:06 -42.9 Dark Up 34.0 90.8 Up 03:45:29 - 04:06:43 1900
Laughlin/Bullhead City 03:56:08 -42.3 Dark Up 33.4 90.3 Up 03:45:31 - 04:06:45 1894
Wildwood 03:56:17 -39.0 Dark Up 30.1 87.4 Up 03:45:40 - 04:06:54 1892
Kingman/Dolan Springs 03:56:07 -42.7 Dark Up 33.9 90.6 Up 03:45:30 - 04:06:44 1883
Mohave Valley 03:56:09 -42.3 Dark Up 33.4 90.1 Up 03:45:32 - 04:06:46 1867
DCO 03:56:06 -43.4 Dark Up 34.6 91.1 Up 03:45:29 - 04:06:43 1853
Lake Havasu City 03:56:09 -42.5 Dark Up 33.7 90.0 Up 03:45:32 - 04:06:46 1823
Idyllwild 03:56:15 -40.5 Dark Up 31.7 88.2 Up 03:45:38 - 04:06:52 1809
Parker 03:56:10 -42.5 Dark Up 33.7 89.8 Up 03:45:33 - 04:06:47 1788
Blythe 03:56:11 -42.3 Dark Up 33.4 89.3 Up 03:45:34 - 04:06:48 1744
Calipatria 03:56:14 -41.5 Dark Up 32.6 88.4 Up 03:45:37 - 04:06:51 1719
Yuma 03:56:13 -42.3 Dark Up 33.4 88.6 Up 03:45:36 - 04:06:50 1654

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 03:53UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  9.41  89
Alnath         05:26:17.5 +28:36:23  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 14.5        98
Positions are for J2000

Event circumstances last updated at 2018/06/05 18:21:44 UT

Marc W. Buie, Southwest Research Institute

RECON