RECON: TNO occultation with 15VY165

Event between 15VY165 and star GA1060:00348868 with event index number of 1021495

Geocentric closest approach at 2018/12/20 02:35:28 UTC

J2000 position of star is 03:24:13.1 +17:58:36
Equinox of date position of star is 03:25:17.6 +18:02:34
Stellar brightness G=14.9, use SENSEUP=128
Star is 4 degrees from the moon. Moon is 91% illuminated.
TNO apparent brightness V=23.6

[RECON map]
TNO is 37.4 AU from the Sun and 36.6 AU from the Earth.
The TNO is moving 19.6 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 244 seconds.
The 1-sigma cross-track error in the shadow position is 2944 km.
The sky-plane scale is 26563.6 km/arcsec.

The TNO has an absolute magnitude Hv=7.8
Diameter=163.7 km assuming a 5% albedo -- 8.4 sec chord
Diameter=66.8 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 15VY165, (2018/12/20 02:35UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.7 +16:32:45  0.8 17.18  17
Menkar         03:03:16.4 +04:09:47  2.5 14.89  12
63Tau2Ari      03:23:50.9 +20:48:31  6.2  2.79   7
PPM 119087     03:28:08.4 +18:49:18  6.6  1.03   5
PPM 119074     03:26:31.4 +17:53:57  9.5  0.33   4
PPM 119066     03:26:06.4 +18:16:05 10.1  0.30   4
15VY165        03:25:17.8 +18:02:35 14.9         4
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 3.7 sigma about the mid-time.
The median site spacing is 16.7 km RECON observability=1.0 and success probability=14.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 02:37:03 -24.1 Dark Up 43.2 117.3 Up 02:22:03 - 02:52:03 1387
Kelowna 02:37:02 -24.3 Dark Up 43.4 117.7 Up 02:22:02 - 02:52:02 1380
Penticton 02:37:05 -24.2 Dark Up 43.5 117.2 Up 02:22:05 - 02:52:05 1359
Okanagan Falls 02:37:05 -24.1 Dark Up 43.6 117.0 Up 02:22:05 - 02:52:05 1345
Oliver 02:37:06 -24.1 Dark Up 43.7 116.9 Up 02:22:06 - 02:52:06 1333
Anarchist Mountain Observatory 02:37:06 -24.2 Dark Up 43.9 117.0 Up 02:22:06 - 02:52:06 1315
Oroville 02:37:06 -24.2 Dark Up 43.9 116.8 Up 02:22:06 - 02:52:06 1312
Tonasket 02:37:07 -24.1 Dark Up 44.0 116.6 Up 02:22:07 - 02:52:07 1294
Okanogan 02:37:09 -24.0 Dark Up 44.0 116.2 Up 02:22:09 - 02:52:09 1274
Brewster 02:37:11 -23.8 Dark Up 44.0 115.8 Up 02:22:11 - 02:52:11 1259
Manson/Chelan 02:37:12 -23.6 Dark Up 43.9 115.2 Up 02:22:12 - 02:52:12 1254
Entiat 02:37:13 -23.5 Dark Up 44.0 114.9 Up 02:22:13 - 02:52:13 1240
Wenatchee 02:37:14 -23.4 Dark Up 44.0 114.6 Up 02:22:14 - 02:52:14 1224
Ellensburg 02:37:17 -23.2 Dark Up 44.0 114.0 Up 02:22:17 - 02:52:17 1199
Yakima 02:37:18 -23.1 Dark Up 44.2 113.7 Up 02:22:18 - 02:52:18 1169
Toppenish/White Swan 02:37:19 -23.2 Dark Up 44.4 113.7 Up 02:22:19 - 02:52:19 1148
Goldendale 02:37:22 -22.8 Dark Up 44.3 112.7 Up 02:22:22 - 02:52:22 1118
The Dalles 02:37:24 -22.5 Dark Up 44.2 112.2 Up 02:22:24 - 02:52:24 1111
Pasco 02:37:16 -24.0 Dark Up 45.2 114.8 Up 02:22:16 - 02:52:16 1102
George/Umatilla 02:37:17 -23.8 Dark Up 45.2 114.3 Up 02:22:17 - 02:52:17 1083
PNWRO 02:37:16 -24.1 Dark Up 45.5 114.8 Up 02:22:16 - 02:52:16 1076
Maupin 02:37:25 -22.5 Dark Up 44.4 111.9 Up 02:22:25 - 02:52:25 1076
Madras/Culver 02:37:27 -22.4 Dark Up 44.6 111.4 Up 02:22:27 - 02:52:27 1035
Sisters 02:37:29 -22.0 Dark Up 44.4 110.7 Up 02:22:29 - 02:52:29 1023
Redmond 02:37:28 -22.3 Dark Up 44.7 111.0 Up 02:22:28 - 02:52:28 1009
Bend 02:37:30 -22.1 Dark Up 44.7 110.7 Up 02:22:30 - 02:52:30 996
Oregon Observatory 02:37:31 -22.0 Dark Up 44.7 110.4 Up 02:22:31 - 02:52:31 987
La Pine/Gilchrist 02:37:31 -21.9 Dark Up 44.7 110.2 Up 02:22:31 - 02:52:31 972
North Lake 02:37:32 -22.2 Dark Up 45.3 110.3 Up 02:22:32 - 02:52:32 920
Chiloquin 02:37:37 -21.4 Dark Up 44.8 108.8 Up 02:22:37 - 02:52:37 895
Klamath Falls 02:37:38 -21.4 Dark Up 45.0 108.6 Up 02:22:38 - 02:52:38 866
Paisley 02:37:33 -22.4 Dark Up 45.7 110.1 Up 02:22:33 - 02:52:33 865
Tulelake 02:37:38 -21.6 Dark Up 45.3 108.6 Up 02:22:38 - 02:52:38 835
Lakeview 02:37:34 -22.4 Dark Up 46.0 109.8 Up 02:22:34 - 02:52:34 818
Cedarville 02:37:36 -22.4 Dark Up 46.4 109.4 Up 02:22:36 - 02:52:36 759
Fall River/Burney 02:37:41 -21.4 Dark Up 45.7 107.8 Up 02:22:41 - 02:52:41 758
Susanville 02:37:41 -21.8 Dark Up 46.4 107.8 Up 02:22:41 - 02:52:41 683
Greenville 02:37:43 -21.6 Dark Up 46.3 107.3 Up 02:22:43 - 02:52:43 670
Gimple 02:37:42 -21.6 Dark Up 46.3 107.4 Up 02:22:42 - 02:52:42 667
Quincy 02:37:44 -21.5 Dark Up 46.3 107.1 Up 02:22:44 - 02:52:44 653
Portola 02:37:43 -21.9 Dark Up 46.7 107.4 Up 02:22:43 - 02:52:43 627
Reno 02:37:42 -22.3 Dark Up 47.3 107.7 Up 02:22:42 - 02:52:42 584
Carson City 02:37:43 -22.2 Dark Up 47.4 107.4 Up 02:22:43 - 02:52:43 553
Gardnerville 02:37:44 -22.2 Dark Up 47.5 107.1 Up 02:22:44 - 02:52:44 531
Yerington 02:37:42 -22.7 Dark Up 47.9 107.7 Up 02:22:42 - 02:52:42 516
Hawthorne 02:37:42 -23.0 Dark Up 48.5 107.7 Up 02:22:42 - 02:52:42 460
Lee Vining 02:37:45 -22.5 Dark Up 48.3 106.7 Up 02:22:45 - 02:52:45 427
Tonopah 02:37:39 -23.9 Dark Up 49.7 108.4 Up 02:22:39 - 02:52:39 374
Bishop 02:37:45 -22.9 Dark Up 49.0 106.6 Up 02:22:45 - 02:52:45 352
Lone Pine 02:37:47 -23.0 Dark Up 49.5 106.1 Up 02:22:47 - 02:52:47 275
Beatty 02:37:42 -24.1 Dark Up 50.4 107.5 Up 02:22:42 - 02:52:42 258
CPSLO 02:37:59 -20.7 Dark Up 47.8 102.6 Up 02:22:59 - 02:52:59 248
Indian Springs 02:37:39 -24.8 Dark Up 51.3 108.1 Up 02:22:39 - 02:52:39 194
Niwot 02:36:53 -33.3 Dark Up 57.0 123.9 Up 02:21:53 - 02:51:53 181
Henderson 02:37:38 -25.3 Dark Up 52.0 108.1 Up 02:22:38 - 02:52:38 123
Wildwood 02:37:56 -22.0 Dark Up 49.7 102.8 Up 02:22:56 - 02:52:56 70
Searchlight/Boulder City 02:37:40 -25.2 Dark Up 52.2 107.5 Up 02:22:40 - 02:52:40 70
Laughlin/Bullhead City 02:37:40 -25.4 Dark Up 52.6 107.4 Up 02:22:40 - 02:52:40 31
Patrick 02:37:37 -26.0 Dark Up 53.0 108.4 Up 02:22:37 - 02:52:37 30
Kingman/Dolan Springs 02:37:38 -25.9 Dark Up 53.0 107.9 Up 02:22:38 - 02:52:38 16
Mohave Valley 02:37:41 -25.4 Dark Up 52.7 107.1 Up 02:22:41 - 02:52:41 7
DCO 02:37:35 -26.5 Dark Up 53.7 108.6 Up 02:22:35 - 02:52:35 -21
Idyllwild 02:37:51 -23.4 Dark Up 51.3 103.9 Up 02:22:51 - 02:52:51 -26
Lake Havasu City 02:37:41 -25.5 Dark Up 53.0 106.8 Up 02:22:41 - 02:52:41 -38
Parker 02:37:42 -25.5 Dark Up 53.1 106.4 Up 02:22:42 - 02:52:42 -71
Blythe 02:37:45 -25.1 Dark Up 53.0 105.5 Up 02:22:45 - 02:52:45 -109
Calipatria 02:37:49 -24.3 Dark Up 52.4 104.1 Up 02:22:49 - 02:52:49 -122
Yuma 02:37:48 -24.9 Dark Up 53.2 104.2 Up 02:22:48 - 02:52:48 -193

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 15VY165, (2018/12/20 02:35UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 17.18  17
Menkar         03:02:16.8 +04:05:21  2.5 14.89  12
63Tau2Ari      03:22:45.2 +20:44:31  6.2  2.79   7
PPM 119087     03:27:03.3 +18:45:23  6.6  1.03   5
PPM 119074     03:25:26.6 +17:50:00  9.5  0.33   4
PPM 119066     03:25:01.6 +18:12:08 10.1  0.30   4
15VY165        03:24:13.1 +17:58:36 14.9         4
Positions are for J2000

Event circumstances last updated at 2018/12/01 22:10:51 UT

Marc W. Buie, Southwest Research Institute

RECON