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 06:39:40.7 +32:18:34
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 235 seconds.
The 1-sigma cross-track error in the shadow position is 1895 km.
The sky-plane scale is 21350.3 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 3.8 sigma about the mid-time.
The median site spacing is 26.0 km RECON observability=1.0 and success probability=0.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Rutland 08:25:18 -62.9 Dark Up 72.4 174.9 Up 08:10:18 - 08:40:18 8541
Penticton 08:25:19 -63.3 Dark Up 72.7 174.3 Up 08:10:19 - 08:40:19 8501
Okanagan Falls 08:25:19 -63.5 Dark Up 72.9 174.2 Up 08:10:19 - 08:40:19 8481
Southern Okanagan 08:25:18 -63.6 Dark Up 73.1 174.2 Up 08:10:18 - 08:40:18 8464
Oroville 08:25:17 -63.9 Dark Up 73.3 174.4 Up 08:10:17 - 08:40:17 8439
Tonasket 08:25:17 -64.1 Dark Up 73.6 174.4 Up 08:10:17 - 08:40:17 8414
Okanogan 08:25:18 -64.4 Dark Up 73.9 173.8 Up 08:10:18 - 08:40:18 8377
Brewster 08:25:19 -64.7 Dark Up 74.1 173.1 Up 08:10:19 - 08:40:19 8346
Manson/Chelan 08:25:19 -65.0 Dark Up 74.3 171.9 Up 08:10:19 - 08:40:19 8320
Entiat 08:25:19 -65.2 Dark Up 74.5 171.5 Up 08:10:19 - 08:40:19 8296
Wenatchee 08:25:19 -65.5 Dark Up 74.8 171.1 Up 08:10:19 - 08:40:19 8268
Ellensburg 08:25:20 -65.9 Dark Up 75.2 170.1 Up 08:10:20 - 08:40:20 8222
Yakima 08:25:20 -66.3 Dark Up 75.6 169.8 Up 08:10:20 - 08:40:20 8178
Pasco 08:25:15 -66.4 Dark Up 76.0 174.5 Up 08:10:15 - 08:40:15 8157
Toppenish/White Swan 08:25:19 -66.5 Dark Up 75.8 170.2 Up 08:10:19 - 08:40:19 8157
PNWRO 08:25:14 -66.6 Dark Up 76.3 175.2 Up 08:10:14 - 08:40:14 8134
George/Umatilla 08:25:15 -66.7 Dark Up 76.3 173.6 Up 08:10:15 - 08:40:15 8119
Goldendale 08:25:20 -67.1 Dark Up 76.3 168.3 Up 08:10:20 - 08:40:20 8093
The Dalles 08:25:21 -67.4 Dark Up 76.4 166.9 Up 08:10:21 - 08:40:21 8065
Maupin 08:25:20 -67.8 Dark Up 76.9 166.8 Up 08:10:20 - 08:40:20 8021
Madras/Culver 08:25:20 -68.3 Dark Up 77.4 166.1 Up 08:10:20 - 08:40:20 7962
Redmond 08:25:20 -68.7 Dark Up 77.7 165.5 Up 08:10:20 - 08:40:20 7923
Sisters 08:25:22 -68.7 Dark Up 77.6 164.0 Up 08:10:22 - 08:40:22 7921
Bend 08:25:21 -68.9 Dark Up 77.9 164.7 Up 08:10:21 - 08:40:21 7898
Oregon Observatory 08:25:21 -69.1 Dark Up 78.1 164.0 Up 08:10:21 - 08:40:21 7878
La Pine/Gilchrist 08:25:21 -69.3 Dark Up 78.2 163.5 Up 08:10:21 - 08:40:21 7855
North Lake 08:25:19 -69.6 Dark Up 78.8 165.4 Up 08:10:19 - 08:40:19 7814
Paisley 08:25:17 -70.1 Dark Up 79.4 166.2 Up 08:10:17 - 08:40:17 7758
Niwot 08:24:24 -65.5 Dark Up 77.5 235.3 Up 08:09:24 - 08:39:24 7740
Chiloquin 08:25:22 -70.4 Dark Up 79.2 160.3 Up 08:10:22 - 08:40:22 7731
Lakeview 08:25:16 -70.5 Dark Up 79.9 166.4 Up 08:10:16 - 08:40:16 7705
Klamath Falls 08:25:21 -70.8 Dark Up 79.6 160.0 Up 08:10:21 - 08:40:21 7695
Tulelake 08:25:20 -71.0 Dark Up 79.9 160.8 Up 08:10:20 - 08:40:20 7668
Cedarville 08:25:15 -71.1 Dark Up 80.6 166.4 Up 08:10:15 - 08:40:15 7636
Fall River/Burney 08:25:19 -71.8 Dark Up 80.8 159.4 Up 08:10:19 - 08:40:19 7570
Susanville 08:25:17 -72.3 Dark Up 81.5 161.9 Up 08:10:17 - 08:40:17 7509
Gimple 08:25:17 -72.6 Dark Up 81.7 160.1 Up 08:10:17 - 08:40:17 7477
Greenville 08:25:18 -72.6 Dark Up 81.7 159.7 Up 08:10:18 - 08:40:18 7476
Quincy 08:25:17 -72.8 Dark Up 81.9 159.2 Up 08:10:17 - 08:40:17 7454
Portola 08:25:15 -72.8 Dark Up 82.2 161.6 Up 08:10:15 - 08:40:15 7446
Reno 08:25:13 -72.9 Dark Up 82.6 165.0 Up 08:10:13 - 08:40:13 7424
Carson City 08:25:12 -73.2 Dark Up 82.9 164.4 Up 08:10:12 - 08:40:12 7385
Yerington 08:25:11 -73.2 Dark Up 83.2 168.3 Up 08:10:11 - 08:40:11 7372
Gardnerville 08:25:12 -73.4 Dark Up 83.1 164.1 Up 08:10:12 - 08:40:12 7359
Hawthorne 08:25:08 -73.4 Dark Up 83.7 171.4 Up 08:10:08 - 08:40:08 7328
Tonopah 08:25:03 -73.3 Dark Up 84.3 182.4 Up 08:10:03 - 08:40:03 7296
Lee Vining 08:25:09 -74.1 Dark Up 84.2 166.5 Up 08:10:09 - 08:40:09 7260
Bishop 08:25:07 -74.4 Dark Up 84.9 171.6 Up 08:10:07 - 08:40:07 7204
Beatty 08:25:01 -74.1 Dark Up 85.4 187.7 Up 08:10:01 - 08:40:01 7177
Indian Springs 08:24:56 -73.8 Dark Up 85.5 199.7 Up 08:09:56 - 08:39:56 7157
Lone Pine 08:25:05 -74.9 Dark Up 85.7 173.7 Up 08:10:05 - 08:40:05 7125
Henderson 08:24:53 -73.9 Dark Up 85.8 209.6 Up 08:09:53 - 08:39:53 7110
Patrick 08:24:49 -73.7 Dark Up 85.7 224.9 Up 08:09:49 - 08:39:49 7061
Searchlight/Boulder City 08:24:53 -74.3 Dark Up 86.2 214.6 Up 08:09:53 - 08:39:53 7049
DCO 08:24:46 -73.5 Dark Up 85.5 233.2 Up 08:09:46 - 08:39:46 7040
Kingman/Dolan Springs 08:24:50 -74.0 Dark Up 86.0 225.5 Up 08:09:50 - 08:39:50 7034
Laughlin/Bullhead City 08:24:51 -74.3 Dark Up 86.3 220.9 Up 08:09:51 - 08:39:51 7022
Mohave Valley 08:24:51 -74.5 Dark Up 86.5 223.9 Up 08:09:51 - 08:39:51 6993
Lake Havasu City 08:24:50 -74.6 Dark Up 86.6 231.1 Up 08:09:50 - 08:39:50 6953
CPSLO 08:25:14 -77.0 Dark Up 86.1 138.1 Up 08:10:14 - 08:40:14 6949
Parker 08:24:50 -74.8 Dark Up 86.8 236.3 Up 08:09:50 - 08:39:50 6916
Blythe 08:24:50 -75.4 Dark Up 87.3 242.5 Up 08:09:50 - 08:39:50 6853
Wildwood 08:25:05 -77.2 Dark Up 88.0 152.3 Up 08:10:05 - 08:40:05 6843
Idyllwild 08:24:58 -76.5 Dark Up 88.5 204.8 Up 08:09:58 - 08:39:58 6831
Calipatria 08:24:53 -76.3 Dark Up 88.2 244.4 Up 08:09:53 - 08:39:53 6784
Yuma 08:24:50 -76.0 Dark Up 87.6 262.0 Up 08:09:50 - 08:39:50 6752

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 2018/09/28 11:43:51 UT

Marc W. Buie, Southwest Research Institute

RECON