RECON: TNO occultation with 01VN71

Event between 01VN71 and star UC4-612-034248 with event index number of 168615

Geocentric closest approach at 2018/12/22 08:23:12 UTC

J2000 position of star is 06:38:27.4 +32:19:38
Equinox of date position of star is 06:39:35.1 +32:18:39
Stellar brightness R=15.9, 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 310 seconds.
The 1-sigma cross-track error in the shadow position is 5039 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 08:23UT)
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 +32:26:24  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 15.9        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 26.0 km RECON observability=1.0 and success probability=8.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 08:23:30 -63.9 Dark Up 73.3 173.1 Up 08:08:30 - 08:38:30 3811
Tonasket 08:23:30 -64.2 Dark Up 73.5 173.1 Up 08:08:30 - 08:38:30 3786
Okanogan 08:23:31 -64.5 Dark Up 73.9 172.5 Up 08:08:31 - 08:38:31 3749
Brewster 08:23:31 -64.8 Dark Up 74.1 171.7 Up 08:08:31 - 08:38:31 3718
Manson/Chelan 08:23:32 -65.1 Dark Up 74.3 170.5 Up 08:08:32 - 08:38:32 3692
Entiat 08:23:32 -65.3 Dark Up 74.5 170.1 Up 08:08:32 - 08:38:32 3668
Wenatchee 08:23:33 -65.6 Dark Up 74.7 169.7 Up 08:08:33 - 08:38:33 3640
Ellensburg 08:23:33 -66.0 Dark Up 75.1 168.7 Up 08:08:33 - 08:38:33 3594
Yakima 08:23:33 -66.4 Dark Up 75.5 168.3 Up 08:08:33 - 08:38:33 3550
Pasco 08:23:28 -66.5 Dark Up 76.0 172.9 Up 08:08:28 - 08:38:28 3529
Toppenish/White Swan 08:23:32 -66.6 Dark Up 75.7 168.7 Up 08:08:32 - 08:38:32 3529
PNWRO 08:23:27 -66.7 Dark Up 76.3 173.6 Up 08:08:27 - 08:38:27 3505
George/Umatilla 08:23:28 -66.8 Dark Up 76.3 172.0 Up 08:08:28 - 08:38:28 3491
Goldendale 08:23:33 -67.2 Dark Up 76.2 166.8 Up 08:08:33 - 08:38:33 3465
The Dalles 08:23:34 -67.5 Dark Up 76.4 165.3 Up 08:08:34 - 08:38:34 3437
Maupin 08:23:33 -67.9 Dark Up 76.8 165.2 Up 08:08:33 - 08:38:33 3393
Madras/Culver 08:23:33 -68.4 Dark Up 77.3 164.4 Up 08:08:33 - 08:38:33 3334
Redmond 08:23:33 -68.7 Dark Up 77.6 163.8 Up 08:08:33 - 08:38:33 3295
Sisters 08:23:35 -68.8 Dark Up 77.5 162.3 Up 08:08:35 - 08:38:35 3293
Bend 08:23:33 -69.0 Dark Up 77.8 163.0 Up 08:08:33 - 08:38:33 3270
Oregon Observatory 08:23:34 -69.2 Dark Up 78.0 162.2 Up 08:08:34 - 08:38:34 3250
La Pine/Gilchrist 08:23:34 -69.4 Dark Up 78.1 161.7 Up 08:08:34 - 08:38:34 3227
North Lake 08:23:32 -69.7 Dark Up 78.7 163.5 Up 08:08:32 - 08:38:32 3186
Paisley 08:23:30 -70.2 Dark Up 79.3 164.2 Up 08:08:30 - 08:38:30 3130
Niwot 08:22:37 -65.8 Dark Up 77.8 234.2 Up 08:07:37 - 08:37:37 3110
Chiloquin 08:23:35 -70.5 Dark Up 79.1 158.4 Up 08:08:35 - 08:38:35 3103
Lakeview 08:23:30 -70.6 Dark Up 79.8 164.3 Up 08:08:30 - 08:38:30 3077
Klamath Falls 08:23:34 -70.8 Dark Up 79.4 158.0 Up 08:08:34 - 08:38:34 3067
Tulelake 08:23:33 -71.1 Dark Up 79.8 158.8 Up 08:08:33 - 08:38:33 3040
Cedarville 08:23:29 -71.2 Dark Up 80.5 164.1 Up 08:08:29 - 08:38:29 3008
Fall River/Burney 08:23:33 -71.9 Dark Up 80.6 157.2 Up 08:08:33 - 08:38:33 2942
Susanville 08:23:30 -72.4 Dark Up 81.4 159.5 Up 08:08:30 - 08:38:30 2881
Gimple 08:23:30 -72.7 Dark Up 81.6 157.7 Up 08:08:30 - 08:38:30 2849
Greenville 08:23:31 -72.7 Dark Up 81.6 157.2 Up 08:08:31 - 08:38:31 2848
Quincy 08:23:30 -72.9 Dark Up 81.8 156.7 Up 08:08:30 - 08:38:30 2826
Portola 08:23:29 -72.9 Dark Up 82.0 159.0 Up 08:08:29 - 08:38:29 2817
Reno 08:23:26 -73.0 Dark Up 82.5 162.2 Up 08:08:26 - 08:38:26 2796
Carson City 08:23:26 -73.3 Dark Up 82.8 161.4 Up 08:08:26 - 08:38:26 2757
Yerington 08:23:23 -73.3 Dark Up 83.1 165.2 Up 08:08:23 - 08:38:23 2743
Gardnerville 08:23:26 -73.5 Dark Up 83.0 161.1 Up 08:08:26 - 08:38:26 2731
Hawthorne 08:23:21 -73.6 Dark Up 83.7 168.0 Up 08:08:21 - 08:38:21 2699
Tonopah 08:23:16 -73.5 Dark Up 84.3 178.6 Up 08:08:16 - 08:38:16 2667
Lee Vining 08:23:23 -74.3 Dark Up 84.1 162.9 Up 08:08:23 - 08:38:23 2631
Bishop 08:23:19 -74.5 Dark Up 84.8 167.4 Up 08:08:19 - 08:38:19 2575
Beatty 08:23:13 -74.3 Dark Up 85.4 183.0 Up 08:08:13 - 08:38:13 2548
Indian Springs 08:23:09 -74.0 Dark Up 85.6 195.0 Up 08:08:09 - 08:38:09 2529
Lone Pine 08:23:18 -75.1 Dark Up 85.6 168.8 Up 08:08:18 - 08:38:18 2497
Henderson 08:23:07 -74.1 Dark Up 85.9 204.9 Up 08:08:07 - 08:38:07 2481
Patrick 08:23:03 -74.0 Dark Up 86.0 221.0 Up 08:08:03 - 08:38:03 2432
Searchlight/Boulder City 08:23:06 -74.5 Dark Up 86.4 209.5 Up 08:08:06 - 08:38:06 2420
DCO 08:23:00 -73.8 Dark Up 85.8 230.0 Up 08:08:00 - 08:38:00 2411
Kingman/Dolan Springs 08:23:03 -74.2 Dark Up 86.2 221.4 Up 08:08:03 - 08:38:03 2404
Laughlin/Bullhead City 08:23:04 -74.5 Dark Up 86.5 216.1 Up 08:08:04 - 08:38:04 2393
Mohave Valley 08:23:04 -74.7 Dark Up 86.7 219.0 Up 08:08:04 - 08:38:04 2364
Lake Havasu City 08:23:03 -74.9 Dark Up 86.9 226.7 Up 08:08:03 - 08:38:03 2324
CPSLO 08:23:26 -77.2 Dark Up 85.8 134.1 Up 08:08:26 - 08:38:26 2321
Parker 08:23:03 -75.1 Dark Up 87.1 232.0 Up 08:08:03 - 08:38:03 2286
Blythe 08:23:03 -75.6 Dark Up 87.6 238.1 Up 08:08:03 - 08:38:03 2224
Wildwood 08:23:19 -77.4 Dark Up 87.8 143.5 Up 08:08:19 - 08:38:19 2214
Idyllwild 08:23:11 -76.8 Dark Up 88.6 190.8 Up 08:08:11 - 08:38:11 2202
Calipatria 08:23:06 -76.5 Dark Up 88.5 237.8 Up 08:08:06 - 08:38:06 2155
Yuma 08:23:03 -76.3 Dark Up 88.0 260.3 Up 08:08:03 - 08:38:03 2123

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 08:23UT)
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 15.9        18
Positions are for J2000

Event circumstances last updated at 2017/04/24 16:36:39 UT

Marc W. Buie, Southwest Research Institute

RECON