RECON: TNO occultation with 05VZ122

Event between 05VZ122 and star UC4-524-014363 with event index number of 93436

Geocentric closest approach at 2017/12/28 04:24:18 UTC

J2000 position of star is 05:37:29.3 +14:47:47
Equinox of date position of star is 05:38:24.8 +14:48:18
Stellar brightness R=13.0
Star is 55 degrees from the moon. Moon is 69% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 35.3 AU from the Sun and 34.4 AU from the Earth.
The TNO is moving 24.4 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 829 seconds.
The 1-sigma cross-track error in the shadow position is 3860 km.

The TNO has an absolute magnitude Hv=7.3
Diameter=205.1 km assuming a 5% albedo -- 8.4 sec chord
Diameter=83.7 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 05VZ122, (2017/12/28 04:24UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:08.8 +07:24:32  0.4  8.57  60
Bellatrix      05:26:05.8 +06:21:52  1.6  8.97  52
35 Ori         05:34:55.7 +14:19:00  5.6  1.00  54
PPM 121199     05:38:39.5 +15:15:15  8.3  0.45  55
PPM 121170     05:37:28.9 +14:39:49  8.6  0.29  55
05VZ122        05:38:30.9 +14:48:21 13.0        56
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 23.4 km RECON observability=1.0 and success probability=2.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 04:26:06 -41.2 Dark Up 42.5 121.7 Up 03:16:33 - 05:35:39 9963
Tonasket 04:26:07 -41.2 Dark Up 42.6 121.5 Up 03:16:34 - 05:35:40 9944
Okanogan 04:26:07 -41.2 Dark Up 42.7 121.1 Up 03:16:34 - 05:35:40 9917
Brewster 04:26:09 -41.1 Dark Up 42.8 120.7 Up 03:16:36 - 05:35:42 9896
Manson/Chelan 04:26:10 -40.9 Dark Up 42.7 120.1 Up 03:16:37 - 05:35:43 9884
Entiat 04:26:10 -40.9 Dark Up 42.7 119.9 Up 03:16:37 - 05:35:43 9866
Wenatchee 04:26:12 -40.9 Dark Up 42.8 119.6 Up 03:16:39 - 05:35:45 9845
Ellensburg 04:26:13 -40.8 Dark Up 42.9 119.0 Up 03:16:40 - 05:35:46 9812
Yakima 04:26:14 -40.9 Dark Up 43.1 118.6 Up 03:16:41 - 05:35:47 9777
Toppenish/White Swan 04:26:14 -41.0 Dark Up 43.3 118.6 Up 03:16:41 - 05:35:47 9755
Pasco 04:26:12 -41.9 Dark Up 44.1 119.9 Up 03:16:39 - 05:35:45 9726
PNWRO 04:26:12 -42.1 Dark Up 44.4 119.9 Up 03:16:39 - 05:35:45 9701
George/Umatilla 04:26:12 -41.8 Dark Up 44.1 119.4 Up 03:16:39 - 05:35:45 9700
Goldendale 04:26:16 -40.8 Dark Up 43.3 117.8 Up 03:16:43 - 05:35:49 9713
The Dalles 04:26:17 -40.6 Dark Up 43.2 117.2 Up 03:16:44 - 05:35:50 9699
Maupin 04:26:18 -40.8 Dark Up 43.4 117.0 Up 03:16:45 - 05:35:51 9660
Madras/Culver 04:26:20 -40.8 Dark Up 43.6 116.5 Up 03:16:47 - 05:35:53 9612
Sisters 04:26:22 -40.5 Dark Up 43.5 115.7 Up 03:16:49 - 05:35:55 9589
Redmond 04:26:20 -40.8 Dark Up 43.8 116.1 Up 03:16:47 - 05:35:53 9581
Bend 04:26:22 -40.7 Dark Up 43.8 115.8 Up 03:16:49 - 05:35:55 9564
Oregon Observatory 04:26:23 -40.7 Dark Up 43.8 115.5 Up 03:16:50 - 05:35:56 9550
LaPine/Gilchrist 04:26:23 -40.6 Dark Up 43.8 115.3 Up 03:16:50 - 05:35:56 9532
North Lake 04:26:23 -41.1 Dark Up 44.4 115.5 Up 03:16:50 - 05:35:56 9484
Paisley 04:26:23 -41.4 Dark Up 44.9 115.4 Up 03:16:50 - 05:35:56 9427
Chiloquin 04:26:27 -40.5 Dark Up 44.1 114.0 Up 03:16:54 - 05:36:00 9437
Klamath Falls 04:26:27 -40.6 Dark Up 44.2 113.7 Up 03:16:54 - 05:36:00 9404
Lakeview 04:26:23 -41.6 Dark Up 45.2 115.1 Up 03:16:50 - 05:35:56 9378
Tulelake 04:26:27 -40.8 Dark Up 44.6 113.8 Up 03:16:54 - 05:36:00 9374
Cedarville 04:26:23 -41.8 Dark Up 45.6 114.7 Up 03:16:50 - 05:35:56 9314
Fall River/Burney 04:26:28 -40.9 Dark Up 45.0 113.0 Up 03:16:55 - 05:36:01 9288
Susanville 04:26:28 -41.5 Dark Up 45.7 113.2 Up 03:16:55 - 05:36:01 9217
Greenville 04:26:29 -41.3 Dark Up 45.7 112.6 Up 03:16:56 - 05:36:02 9196
Niwot 04:25:44 -53.1 Dark Up 55.9 130.3 Up 03:16:11 - 05:35:17 8968
Quincy 04:26:29 -41.4 Dark Up 45.7 112.4 Up 03:16:56 - 05:36:02 9177
Portola 04:26:29 -41.7 Dark Up 46.1 112.8 Up 03:16:56 - 05:36:02 9157
Reno 04:26:27 -42.2 Dark Up 46.7 113.1 Up 03:16:54 - 05:36:00 9122
Carson City 04:26:28 -42.3 Dark Up 46.8 112.8 Up 03:16:55 - 05:36:01 9087
Yerington 04:26:27 -42.8 Dark Up 47.4 113.2 Up 03:16:54 - 05:36:00 9058
Gardnerville 04:26:28 -42.3 Dark Up 47.0 112.6 Up 03:16:55 - 05:36:01 9063
Hawthorne 04:26:27 -43.2 Dark Up 47.9 113.3 Up 03:16:54 - 05:36:00 9005
Lee Vining 04:26:29 -42.9 Dark Up 47.8 112.2 Up 03:16:56 - 05:36:02 8959
Tonopah 04:26:23 -44.3 Dark Up 49.1 114.1 Up 03:16:50 - 05:35:56 8937
Bishop 04:26:28 -43.5 Dark Up 48.6 112.3 Up 03:16:55 - 05:36:01 8888
Lone Pine 04:26:28 -43.7 Dark Up 49.1 111.8 Up 03:16:55 - 05:36:01 8809
Beatty 04:26:24 -44.8 Dark Up 49.9 113.3 Up 03:16:51 - 05:35:57 8817
Indian Springs 04:26:21 -45.6 Dark Up 50.8 114.0 Up 03:16:48 - 05:35:54 8767
Henderson 04:26:20 -46.2 Dark Up 51.6 114.1 Up 03:16:47 - 05:35:53 8703
Searchlight/Boulder City 04:26:21 -46.3 Dark Up 51.8 113.5 Up 03:16:48 - 05:35:54 8645
CPSLO 04:26:38 -41.7 Dark Up 47.6 108.1 Up 03:17:05 - 05:36:11 8725
Kingman/Dolan Springs 04:26:18 -47.0 Dark Up 52.6 114.1 Up 03:16:45 - 05:35:51 8604
Laughlin/Bullhead City 04:26:20 -46.6 Dark Up 52.2 113.5 Up 03:16:47 - 05:35:53 8610
DCO 04:26:16 -47.7 Dark Up 53.3 114.9 Up 03:16:43 - 05:35:49 8582
Mohave Valley 04:26:21 -46.6 Dark Up 52.3 113.2 Up 03:16:48 - 05:35:54 8583
Lake Havasu City 04:26:21 -46.8 Dark Up 52.7 113.0 Up 03:16:48 - 05:35:54 8539
Parker 04:26:21 -46.9 Dark Up 52.8 112.6 Up 03:16:48 - 05:35:54 8503
Idyllwild 04:26:30 -44.9 Dark Up 51.1 109.8 Up 03:16:57 - 05:36:03 8502
Blythe 04:26:23 -46.6 Dark Up 52.8 111.6 Up 03:16:50 - 05:35:56 8455
Calipatria 04:26:27 -45.9 Dark Up 52.3 110.2 Up 03:16:54 - 05:36:00 8420
Yuma 04:26:25 -46.6 Dark Up 53.1 110.5 Up 03:16:52 - 05:35:58 8362

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.

Event circumstances last updated at 2016/03/14 18:01:20 UT

Marc W. Buie, Southwest Research Institute

RECON