RECON: TNO occultation with 01VN71

Event between 01VN71 and star GA1220:02827135 with event index number of 168622

Geocentric closest approach at 2019/01/02 06:40:00 UTC

J2000 position of star is 06:37:02.5 +32:22:12
Equinox of date position of star is 06:38:16.5 +32:21:10
Stellar brightness G=14.2, use SENSEUP=64
Star is 139 degrees from the moon. Moon is 13% illuminated.
TNO apparent brightness V=23.7

[RECON map]
TNO is 30.4 AU from the Sun and 29.4 AU from the Earth.
The TNO is moving 24.6 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 299 seconds.
The 1-sigma cross-track error in the shadow position is 2504 km.
The sky-plane scale is 21347.6 km/arcsec.

The TNO has an absolute magnitude Hv=8.9
Diameter=102.3 km assuming a 5% albedo -- 4.2 sec chord
Diameter=41.8 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 01VN71, (2019/01/02 06:40UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:28.6 +27:58:44  1.1 15.36 125
34Bet Aur      06:00:55.4 +44:56:50  1.9 14.53 140
PPM 071742     06:33:41.6 +32:26:23  6.0  0.97 140
PPM 071825     06:36:52.1 +32:33:37  7.9  0.36 139
PPM 071882     06:39:26.2 +32:29:25  9.2  0.28 138
PPM 071870     06:38:39.5 +32:14:18 11.5  0.14 139
01VN71         06:38:16.8 +32:21:10 14.2       138
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 3.0 sigma about the mid-time.
The median site spacing is 24.0 km RECON observability=1.0 and success probability=16.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:40:58 -58.8 Dark Down 68.5 138.3 Up 06:25:58 - 06:55:58 -1632
Summerland 06:41:00 -58.7 Dark Down 68.4 137.5 Up 06:26:00 - 06:56:00 -1635
Penticton 06:40:59 -59.0 Dark Down 68.7 137.3 Up 06:25:59 - 06:55:59 -1670
Okanagan Falls 06:40:59 -59.1 Dark Down 68.8 137.0 Up 06:25:59 - 06:55:59 -1690
Oliver 06:40:59 -59.3 Dark Down 69.0 136.7 Up 06:25:59 - 06:55:59 -1707
Anarchist Mountain Observatory 06:40:59 -59.5 Dark Down 69.2 136.8 Up 06:25:59 - 06:55:59 -1726
Oroville 06:40:59 -59.5 Dark Down 69.2 136.5 Up 06:25:59 - 06:55:59 -1734
Tonasket 06:40:59 -59.7 Dark Down 69.4 136.1 Up 06:25:59 - 06:55:59 -1759
Okanogan 06:40:59 -59.9 Dark Down 69.5 135.2 Up 06:25:59 - 06:55:59 -1795
Brewster 06:41:00 -60.0 Dark Down 69.6 134.2 Up 06:26:00 - 06:56:00 -1823
Manson/Chelan 06:41:02 -60.0 Dark Down 69.6 133.1 Up 06:26:02 - 06:56:02 -1844
Entiat 06:41:02 -60.2 Dark Down 69.7 132.5 Up 06:26:02 - 06:56:02 -1868
Wenatchee 06:41:02 -60.3 Dark Down 69.8 131.8 Up 06:26:02 - 06:56:02 -1895
Ellensburg 06:41:03 -60.5 Dark Down 70.0 130.6 Up 06:26:03 - 06:56:03 -1938
Yakima 06:41:03 -60.8 Dark Down 70.2 129.7 Up 06:26:03 - 06:56:03 -1982
Toppenish/White Swan 06:41:03 -61.0 Dark Down 70.5 129.5 Up 06:26:03 - 06:56:03 -2006
Pasco 06:40:59 -61.7 Dark Down 71.2 131.8 Up 06:25:59 - 06:55:59 -2023
PNWRO 06:40:59 -62.0 Dark Down 71.5 131.7 Up 06:25:59 - 06:55:59 -2051
George/Umatilla 06:41:00 -61.9 Dark Down 71.3 130.6 Up 06:26:00 - 06:56:00 -2059
Goldendale 06:41:04 -61.2 Dark Down 70.6 127.5 Up 06:26:04 - 06:56:04 -2064
The Dalles 06:41:06 -61.2 Dark Down 70.5 126.3 Up 06:26:06 - 06:56:06 -2087
Maupin 06:41:06 -61.6 Dark Down 70.8 125.5 Up 06:26:06 - 06:56:06 -2133
Madras/Culver 06:41:06 -61.9 Dark Down 71.1 124.2 Up 06:26:06 - 06:56:06 -2192
Sisters 06:41:07 -61.9 Dark Down 71.0 122.5 Up 06:26:07 - 06:56:07 -2227
Redmond 06:41:06 -62.1 Dark Down 71.3 123.2 Up 06:26:06 - 06:56:06 -2231
Bend 06:41:07 -62.2 Dark Down 71.3 122.4 Up 06:26:07 - 06:56:07 -2254
Oregon Observatory 06:41:07 -62.3 Dark Down 71.3 121.7 Up 06:26:07 - 06:56:07 -2272
La Pine/Gilchrist 06:41:07 -62.4 Dark Down 71.4 121.1 Up 06:26:07 - 06:56:07 -2294
North Lake 06:41:06 -63.0 Dark Down 72.0 121.1 Up 06:26:06 - 06:56:06 -2344
Paisley 06:41:05 -63.5 Dark Down 72.5 120.2 Up 06:26:05 - 06:56:05 -2406
Chiloquin 06:41:09 -62.9 Dark Down 71.7 117.6 Up 06:26:09 - 06:56:09 -2414
Klamath Falls 06:41:09 -63.2 Dark Down 71.9 116.8 Up 06:26:09 - 06:56:09 -2452
Lakeview 06:41:05 -64.0 Dark Down 72.9 119.2 Up 06:26:05 - 06:56:05 -2462
Tulelake 06:41:09 -63.5 Dark Down 72.3 116.6 Up 06:26:09 - 06:56:09 -2483
Cedarville 06:41:04 -64.5 Dark Down 73.3 117.6 Up 06:26:04 - 06:56:04 -2535
Fall River/Burney 06:41:08 -64.1 Dark Down 72.7 114.1 Up 06:26:08 - 06:56:08 -2583
Susanville 06:41:06 -64.9 Dark Down 73.5 113.4 Up 06:26:06 - 06:56:06 -2655
Niwot 06:40:14 -72.1 Dark Down 82.0 163.2 Up 06:25:14 - 06:55:14 -2659
Greenville 06:41:07 -64.9 Dark Down 73.4 112.1 Up 06:26:07 - 06:56:07 -2684
Gimple 06:41:07 -65.0 Dark Down 73.4 112.2 Up 06:26:07 - 06:56:07 -2685
Quincy 06:41:08 -65.0 Dark Down 73.4 111.5 Up 06:26:08 - 06:56:08 -2707
Portola 06:41:06 -65.4 Dark Down 73.8 111.8 Up 06:26:06 - 06:56:06 -2722
Reno 06:41:04 -66.0 Dark Down 74.4 112.0 Up 06:26:04 - 06:56:04 -2754
Carson City 06:41:04 -66.2 Dark Down 74.5 110.8 Up 06:26:04 - 06:56:04 -2794
Yerington 06:41:02 -66.7 Dark Down 75.1 111.2 Up 06:26:02 - 06:56:02 -2817
Gardnerville 06:41:04 -66.4 Dark Down 74.6 110.1 Up 06:26:04 - 06:56:04 -2821
Hawthorne 06:41:00 -67.3 Dark Down 75.6 110.4 Up 06:26:00 - 06:56:00 -2870
Tonopah 06:40:55 -68.5 Dark Down 76.8 111.1 Up 06:25:55 - 06:55:55 -2925
Lee Vining 06:41:02 -67.3 Dark Down 75.4 107.6 Up 06:26:02 - 06:56:02 -2931
Bishop 06:40:59 -68.2 Dark Down 76.1 106.4 Up 06:25:59 - 06:55:59 -2999
Beatty 06:40:54 -69.5 Dark Down 77.5 107.1 Up 06:25:54 - 06:55:54 -3053
Lone Pine 06:40:58 -68.8 Dark Down 76.6 103.9 Up 06:25:58 - 06:55:58 -3084
Indian Springs 06:40:50 -70.3 Dark Down 78.4 107.4 Up 06:25:50 - 06:55:50 -3090
Henderson 06:40:48 -71.1 Dark Down 79.1 106.1 Up 06:25:48 - 06:55:48 -3150
Searchlight/Boulder City 06:40:48 -71.5 Dark Down 79.3 103.3 Up 06:25:48 - 06:55:48 -3213
Patrick 06:40:44 -72.2 Dark Down 80.1 104.7 Up 06:25:44 - 06:55:44 -3218
CPSLO 06:41:08 -67.7 Dark Down 74.8 96.0 Up 06:26:08 - 06:56:08 -3219
Kingman/Dolan Springs 06:40:44 -72.2 Dark Down 80.0 103.2 Up 06:25:44 - 06:55:44 -3243
Laughlin/Bullhead City 06:40:46 -71.9 Dark Down 79.6 102.2 Up 06:25:46 - 06:55:46 -3246
DCO 06:40:41 -72.8 Dark Down 80.8 104.2 Up 06:25:41 - 06:55:41 -3251
Mohave Valley 06:40:46 -72.1 Dark Down 79.7 100.8 Up 06:25:46 - 06:55:46 -3276
Lake Havasu City 06:40:45 -72.5 Dark Down 80.0 98.9 Up 06:25:45 - 06:55:45 -3321
Parker 06:40:45 -72.7 Dark Down 80.0 97.0 Up 06:25:45 - 06:55:45 -3359
Wildwood 06:41:01 -69.8 Dark Down 76.5 92.9 Up 06:26:01 - 06:56:01 -3361
Idyllwild 06:40:54 -71.3 Dark Down 78.1 92.7 Up 06:25:54 - 06:55:54 -3405
Blythe 06:40:47 -72.8 Dark Down 79.8 93.7 Up 06:25:47 - 06:55:47 -3418
Calipatria 06:40:50 -72.4 Dark Down 79.1 90.4 Up 06:25:50 - 06:55:50 -3473
Yuma 06:40:46 -73.3 Dark Down 79.8 88.6 Up 06:25:46 - 06:55:46 -3521

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 01VN71, (2019/01/02 06:40UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 15.36 125
34Bet Aur      05:59:31.6 +44:56:51  1.9 14.53 140
PPM 071742     06:32:27.2 +32:27:18  6.0  0.97 140
PPM 071825     06:35:37.7 +32:34:37  7.9  0.36 139
PPM 071882     06:38:11.8 +32:30:30  9.2  0.28 138
PPM 071870     06:37:25.2 +32:15:21 11.5  0.14 139
01VN71         06:37:02.5 +32:22:12 14.2       139
Positions are for J2000

Event circumstances last updated at 2018/12/04 05:05:36 UT

Marc W. Buie, Southwest Research Institute

RECON