RECON: TNO occultation with 01VN71

Event between 01VN71 and star GA1220:02840131 with event index number of 168615

Geocentric closest approach at 2018/12/22 08:24:48 UTC

J2000 position of star is 06:38:27.4 +32:19:38
Equinox of date position of star is 06:39:39.4 +32:18:35
Stellar brightness G=16.3, use SENSEUP=128
Star is 18 degrees from the moon. Moon is 100% 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 24.4 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 309 seconds.
The 1-sigma cross-track error in the shadow position is 5067 km.
The sky-plane scale is 21350.0 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, (2018/12/22 08:25UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:28.5 +27:58:44  1.1 15.05  30
34Bet Aur      06:00:55.3 +44:56:50  1.9 14.71  25
PPM 071742     06:33:41.4 +32:26:23  6.0  1.27  17
PPM 071904     06:40:19.6 +31:44:53  7.8  0.58  18
PPM 071882     06:39:26.0 +32:29:26  9.2  0.19  18
01VN71         06:39:41.6 +32:18:33 16.3        18
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 2.9 sigma about the mid-time.
The median site spacing is 26.3 km RECON observability=1.0 and success probability=9.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 08:25:08 -63.3 Dark Up 72.7 174.2 Up 08:10:08 - 08:40:08 2380
Oroville 08:25:07 -63.9 Dark Up 73.3 174.3 Up 08:10:07 - 08:40:07 2318
Tonasket 08:25:07 -64.1 Dark Up 73.6 174.3 Up 08:10:07 - 08:40:07 2294
Okanogan 08:25:07 -64.4 Dark Up 73.9 173.7 Up 08:10:07 - 08:40:07 2256
Brewster 08:25:07 -64.7 Dark Up 74.1 173.0 Up 08:10:07 - 08:40:07 2226
Manson/Chelan 08:25:08 -65.0 Dark Up 74.3 171.7 Up 08:10:08 - 08:40:08 2200
Entiat 08:25:08 -65.2 Dark Up 74.5 171.4 Up 08:10:08 - 08:40:08 2175
Wenatchee 08:25:08 -65.5 Dark Up 74.8 170.9 Up 08:10:08 - 08:40:08 2147
Ellensburg 08:25:09 -65.9 Dark Up 75.2 170.0 Up 08:10:09 - 08:40:09 2101
Yakima 08:25:08 -66.3 Dark Up 75.5 169.6 Up 08:10:08 - 08:40:08 2057
Pasco 08:25:04 -66.4 Dark Up 76.0 174.3 Up 08:10:04 - 08:40:04 2037
Toppenish/White Swan 08:25:08 -66.5 Dark Up 75.8 170.1 Up 08:10:08 - 08:40:08 2036
PNWRO 08:25:03 -66.6 Dark Up 76.3 175.0 Up 08:10:03 - 08:40:03 2013
George/Umatilla 08:25:04 -66.8 Dark Up 76.3 173.4 Up 08:10:04 - 08:40:04 1998
Goldendale 08:25:09 -67.1 Dark Up 76.3 168.2 Up 08:10:09 - 08:40:09 1972
The Dalles 08:25:10 -67.4 Dark Up 76.4 166.7 Up 08:10:10 - 08:40:10 1944
Maupin 08:25:10 -67.8 Dark Up 76.9 166.7 Up 08:10:10 - 08:40:10 1901
Madras/Culver 08:25:09 -68.3 Dark Up 77.4 165.9 Up 08:10:09 - 08:40:09 1841
Redmond 08:25:10 -68.7 Dark Up 77.7 165.4 Up 08:10:10 - 08:40:10 1802
Sisters 08:25:11 -68.7 Dark Up 77.6 163.9 Up 08:10:11 - 08:40:11 1801
Bend 08:25:10 -68.9 Dark Up 77.9 164.5 Up 08:10:10 - 08:40:10 1777
Oregon Observatory 08:25:10 -69.1 Dark Up 78.0 163.8 Up 08:10:10 - 08:40:10 1757
La Pine/Gilchrist 08:25:10 -69.3 Dark Up 78.2 163.3 Up 08:10:10 - 08:40:10 1735
North Lake 08:25:08 -69.6 Dark Up 78.8 165.2 Up 08:10:08 - 08:40:08 1694
Paisley 08:25:07 -70.1 Dark Up 79.4 166.0 Up 08:10:07 - 08:40:07 1638
Niwot 08:24:13 -65.5 Dark Up 77.5 235.2 Up 08:09:13 - 08:39:13 1619
Chiloquin 08:25:11 -70.5 Dark Up 79.2 160.1 Up 08:10:11 - 08:40:11 1610
Lakeview 08:25:06 -70.5 Dark Up 79.9 166.2 Up 08:10:06 - 08:40:06 1585
Klamath Falls 08:25:10 -70.8 Dark Up 79.5 159.8 Up 08:10:10 - 08:40:10 1574
Tulelake 08:25:09 -71.0 Dark Up 79.9 160.6 Up 08:10:09 - 08:40:09 1548
Cedarville 08:25:05 -71.1 Dark Up 80.6 166.1 Up 08:10:05 - 08:40:05 1515
Fall River/Burney 08:25:08 -71.8 Dark Up 80.7 159.2 Up 08:10:08 - 08:40:08 1449
Susanville 08:25:06 -72.3 Dark Up 81.5 161.7 Up 08:10:06 - 08:40:06 1389
Gimple 08:25:06 -72.6 Dark Up 81.7 159.9 Up 08:10:06 - 08:40:06 1356
Greenville 08:25:07 -72.6 Dark Up 81.7 159.4 Up 08:10:07 - 08:40:07 1355
Quincy 08:25:07 -72.8 Dark Up 81.9 158.9 Up 08:10:07 - 08:40:07 1333
Portola 08:25:05 -72.8 Dark Up 82.1 161.4 Up 08:10:05 - 08:40:05 1325
Reno 08:25:02 -72.9 Dark Up 82.5 164.7 Up 08:10:02 - 08:40:02 1303
Carson City 08:25:02 -73.2 Dark Up 82.9 164.1 Up 08:10:02 - 08:40:02 1264
Yerington 08:25:00 -73.2 Dark Up 83.2 167.9 Up 08:10:00 - 08:40:00 1251
Gardnerville 08:25:02 -73.4 Dark Up 83.1 163.8 Up 08:10:02 - 08:40:02 1238
Hawthorne 08:24:57 -73.4 Dark Up 83.7 171.0 Up 08:09:57 - 08:39:57 1207
Tonopah 08:24:52 -73.3 Dark Up 84.3 182.0 Up 08:09:52 - 08:39:52 1175
Lee Vining 08:24:59 -74.1 Dark Up 84.2 166.1 Up 08:09:59 - 08:39:59 1139
Bishop 08:24:56 -74.4 Dark Up 84.9 171.2 Up 08:09:56 - 08:39:56 1083
Beatty 08:24:50 -74.1 Dark Up 85.4 187.2 Up 08:09:50 - 08:39:50 1055
Indian Springs 08:24:46 -73.8 Dark Up 85.5 199.3 Up 08:09:46 - 08:39:46 1036
Lone Pine 08:24:54 -74.9 Dark Up 85.7 173.2 Up 08:09:54 - 08:39:54 1004
Henderson 08:24:43 -73.9 Dark Up 85.8 209.2 Up 08:09:43 - 08:39:43 989
Patrick 08:24:39 -73.7 Dark Up 85.7 224.6 Up 08:09:39 - 08:39:39 940
Searchlight/Boulder City 08:24:42 -74.3 Dark Up 86.2 214.1 Up 08:09:42 - 08:39:42 928
DCO 08:24:35 -73.5 Dark Up 85.5 232.9 Up 08:09:35 - 08:39:35 919
Kingman/Dolan Springs 08:24:39 -74.0 Dark Up 86.0 225.1 Up 08:09:39 - 08:39:39 912
Laughlin/Bullhead City 08:24:41 -74.3 Dark Up 86.3 220.5 Up 08:09:41 - 08:39:41 901
Mohave Valley 08:24:40 -74.5 Dark Up 86.5 223.4 Up 08:09:40 - 08:39:40 872
Lake Havasu City 08:24:39 -74.6 Dark Up 86.6 230.7 Up 08:09:39 - 08:39:39 832
CPSLO 08:25:03 -77.0 Dark Up 86.0 137.7 Up 08:10:03 - 08:40:03 829
Parker 08:24:39 -74.9 Dark Up 86.8 235.9 Up 08:09:39 - 08:39:39 795
Blythe 08:24:39 -75.4 Dark Up 87.3 242.1 Up 08:09:39 - 08:39:39 732
Wildwood 08:24:55 -77.2 Dark Up 88.0 151.4 Up 08:09:55 - 08:39:55 722
Idyllwild 08:24:47 -76.6 Dark Up 88.5 203.4 Up 08:09:47 - 08:39:47 710
Calipatria 08:24:42 -76.3 Dark Up 88.2 243.8 Up 08:09:42 - 08:39:42 663
Yuma 08:24:39 -76.0 Dark Up 87.6 261.9 Up 08:09:39 - 08:39:39 631

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, (2018/12/22 08:25UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 15.05  30
34Bet Aur      05:59:31.6 +44:56:51  1.9 14.71  25
PPM 071742     06:32:27.2 +32:27:18  6.0  1.27  17
PPM 071904     06:39:05.8 +31:45:58  7.8  0.58  18
PPM 071882     06:38:11.8 +32:30:30  9.2  0.19  18
01VN71         06:38:27.4 +32:19:38 16.3        18
Positions are for J2000

Event circumstances last updated at 2018/06/05 16:40:05 UT

Marc W. Buie, Southwest Research Institute

RECON