RECON: TNO occultation with 04VY130

Event between 04VY130 and star UC4-536-013250 with event index number of 238064

Geocentric closest approach at 2018/09/05 10:16:58 UTC

J2000 position of star is 05:17:30.8 +17:07:11
Equinox of date position of star is 05:18:33.6 +17:08:17
Stellar brightness R=14.9, use SENSEUP=128
Star is 24 degrees from the moon. Moon is 25% illuminated.
TNO apparent brightness V=23.0

[RECON map]
TNO is 29.6 AU from the Sun and 29.8 AU from the Earth.
The TNO is moving 10.0 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 535 seconds.
The 1-sigma cross-track error in the shadow position is 3616 km.
The sky-plane scale is 21579.1 km/arcsec.

The TNO has an absolute magnitude Hv=8.1
Diameter=144.5 km assuming a 5% albedo -- 14.4 sec chord
Diameter=59.0 km assuming a 30% albedo -- 5.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04VY130, (2018/09/05 10:17UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:59.7 +16:32:43  0.8  9.97  34
Bellatrix      05:26:08.0 +06:21:54  1.6 10.93  26
110 Tau        05:24:42.5 +16:42:56  6.4  1.52  22
PPM 120781     05:17:47.4 +17:02:21  8.3  0.22  24
04VY130        05:18:35.8 +17:08:19 14.9        23
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 1.7 sigma about the mid-time.
The median site spacing is 25.8 km RECON observability=1.0 and success probability=6.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 10:09:03 -27.2 Dark Up 31.1 99.7 Up 09:54:03 - 10:24:03 7074
Tonasket 10:09:02 -27.4 Dark Up 31.1 99.5 Up 09:54:02 - 10:24:02 7050
Okanogan 10:08:59 -27.7 Dark Up 31.0 99.2 Up 09:53:59 - 10:23:59 7017
Brewster 10:08:57 -28.0 Dark Up 30.9 98.9 Up 09:53:57 - 10:23:57 6992
Manson/Chelan 10:08:55 -28.4 Dark Up 30.7 98.4 Up 09:53:55 - 10:23:55 6973
Entiat 10:08:52 -28.6 Dark Up 30.7 98.3 Up 09:53:52 - 10:23:52 6952
Wenatchee 10:08:51 -28.8 Dark Up 30.7 98.0 Up 09:53:51 - 10:23:51 6927
Ellensburg 10:08:50 -29.2 Dark Up 30.6 97.6 Up 09:53:50 - 10:23:50 6886
Yakima 10:08:49 -29.6 Dark Up 30.6 97.3 Up 09:53:49 - 10:23:49 6845
Toppenish/White Swan 10:08:47 -29.7 Dark Up 30.8 97.3 Up 09:53:47 - 10:23:47 6821
Pasco 10:08:52 -29.2 Dark Up 31.7 98.3 Up 09:53:52 - 10:23:52 6799
PNWRO 10:08:51 -29.3 Dark Up 31.8 98.3 Up 09:53:51 - 10:23:51 6772
Goldendale 10:08:44 -30.3 Dark Up 30.5 96.7 Up 09:53:44 - 10:23:44 6768
George/Umatilla 10:08:49 -29.6 Dark Up 31.5 97.9 Up 09:53:49 - 10:23:49 6766
The Dalles 10:08:43 -30.6 Dark Up 30.3 96.3 Up 09:53:43 - 10:23:43 6748
Maupin 10:08:40 -30.9 Dark Up 30.4 96.1 Up 09:53:40 - 10:23:40 6704
Madras/Culver 10:08:40 -31.4 Dark Up 30.4 95.7 Up 09:53:40 - 10:23:40 6648
Sisters 10:08:35 -31.9 Dark Up 30.1 95.2 Up 09:53:35 - 10:23:35 6618
Redmond 10:08:36 -31.7 Dark Up 30.4 95.5 Up 09:53:36 - 10:23:36 6612
Bend 10:08:35 -31.9 Dark Up 30.3 95.3 Up 09:53:35 - 10:23:35 6591
Oregon Observatory 10:08:30 -32.1 Dark Up 30.2 95.0 Up 09:53:30 - 10:23:30 6574
La Pine/Gilchrist 10:08:31 -32.3 Dark Up 30.2 94.9 Up 09:53:31 - 10:23:31 6553
North Lake 10:08:33 -32.4 Dark Up 30.7 95.1 Up 09:53:33 - 10:23:33 6502
Paisley 10:08:33 -32.7 Dark Up 31.0 95.0 Up 09:53:33 - 10:23:33 6441
Chiloquin 10:08:26 -33.4 Dark Up 30.0 94.0 Up 09:53:26 - 10:23:26 6441
Klamath Falls 10:08:24 -33.6 Dark Up 30.1 93.8 Up 09:53:24 - 10:23:24 6404
Lakeview 10:08:30 -33.0 Dark Up 31.2 94.8 Up 09:53:30 - 10:23:30 6386
Tulelake 10:08:26 -33.7 Dark Up 30.3 93.9 Up 09:53:26 - 10:23:26 6373
Cedarville 10:08:29 -33.4 Dark Up 31.4 94.5 Up 09:53:29 - 10:23:29 6316
Fall River/Burney 10:08:24 -34.4 Dark Up 30.5 93.4 Up 09:53:24 - 10:23:24 6276
Susanville 10:08:24 -34.5 Dark Up 31.1 93.5 Up 09:53:24 - 10:23:24 6202
Greenville 10:08:23 -34.9 Dark Up 30.8 93.2 Up 09:53:23 - 10:23:23 6176
Gimple 10:08:23 -34.8 Dark Up 30.9 93.2 Up 09:53:23 - 10:23:23 6175
Quincy 10:08:23 -35.0 Dark Up 30.9 93.0 Up 09:53:23 - 10:23:23 6154
Portola 10:08:24 -34.9 Dark Up 31.2 93.3 Up 09:53:24 - 10:23:24 6137
Reno 10:08:26 -34.8 Dark Up 31.8 93.6 Up 09:53:26 - 10:23:26 6102
Niwot 10:09:42 -25.9 Dark Up 43.0 105.0 Up 09:54:42 - 10:24:42 6101
Carson City 10:08:25 -35.0 Dark Up 31.8 93.4 Up 09:53:25 - 10:23:25 6064
Yerington 10:08:25 -34.8 Dark Up 32.3 93.7 Up 09:53:25 - 10:23:25 6037
Gardnerville 10:08:23 -35.2 Dark Up 31.8 93.2 Up 09:53:23 - 10:23:23 6037
Hawthorne 10:08:26 -34.9 Dark Up 32.7 93.7 Up 09:53:26 - 10:23:26 5983
Lee Vining 10:08:23 -35.6 Dark Up 32.4 93.0 Up 09:53:23 - 10:23:23 5927
Tonopah 10:08:32 -34.5 Dark Up 33.9 94.3 Up 09:53:32 - 10:23:32 5922
Bishop 10:08:26 -35.6 Dark Up 33.0 93.1 Up 09:53:26 - 10:23:26 5856
Beatty 10:08:31 -35.1 Dark Up 34.3 93.9 Up 09:53:31 - 10:23:31 5794
Lone Pine 10:08:24 -36.0 Dark Up 33.3 92.8 Up 09:53:24 - 10:23:24 5771
Indian Springs 10:08:35 -34.7 Dark Up 35.2 94.3 Up 09:53:35 - 10:23:35 5751
Henderson 10:08:38 -34.6 Dark Up 35.9 94.4 Up 09:53:38 - 10:23:38 5688
CPSLO 10:08:09 -38.4 Dark Up 31.2 90.4 Up 09:53:09 - 10:23:09 5655
Searchlight/Boulder City 10:08:38 -35.0 Dark Up 36.0 94.0 Up 09:53:38 - 10:23:38 5625
Patrick 10:08:42 -34.3 Dark Up 36.8 94.7 Up 09:53:42 - 10:23:42 5613
Laughlin/Bullhead City 10:08:39 -34.9 Dark Up 36.3 94.0 Up 09:53:39 - 10:23:39 5591
Kingman/Dolan Springs 10:08:41 -34.6 Dark Up 36.7 94.4 Up 09:53:41 - 10:23:41 5590
DCO 10:08:47 -34.1 Dark Up 37.4 94.9 Up 09:53:47 - 10:23:47 5576
Mohave Valley 10:08:38 -35.1 Dark Up 36.3 93.8 Up 09:53:38 - 10:23:38 5561
Lake Havasu City 10:08:39 -35.2 Dark Up 36.5 93.7 Up 09:53:39 - 10:23:39 5516
Wildwood 10:08:18 -38.1 Dark Up 32.9 90.8 Up 09:53:18 - 10:23:18 5504
Parker 10:08:38 -35.4 Dark Up 36.6 93.4 Up 09:53:38 - 10:23:38 5477
Idyllwild 10:08:24 -37.2 Dark Up 34.5 91.7 Up 09:53:24 - 10:23:24 5449
Blythe 10:08:35 -36.0 Dark Up 36.3 92.9 Up 09:53:35 - 10:23:35 5422
Calipatria 10:08:31 -36.9 Dark Up 35.5 92.0 Up 09:53:31 - 10:23:31 5374
Yuma 10:08:34 -36.6 Dark Up 36.3 92.2 Up 09:53:34 - 10:23:34 5321

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 04VY130, (2018/09/05 10:17UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  9.97  34
Bellatrix      05:25:07.8 +06:20:58  1.6 10.93  26
110 Tau        05:23:37.7 +16:41:58  6.4  1.52  22
PPM 120781     05:16:42.5 +17:01:12  8.3  0.22  24
04VY130        05:17:30.8 +17:07:11 14.9        24
Positions are for J2000

Event circumstances last updated at 2018/01/16 17:04:21 UT

Marc W. Buie, Southwest Research Institute

RECON