RECON: TNO occultation with 15VJ166

Event between 15VJ166 and star GA1060:00365965 with event index number of 1017824

Geocentric closest approach at 2018/12/21 06:33:47 UTC

J2000 position of star is 03:31:25.7 +16:52:38
Equinox of date position of star is 03:32:30.0 +16:56:26
Stellar brightness G=15.1, use SENSEUP=128
Star is 15 degrees from the moon. Moon is 97% illuminated.
TNO apparent brightness V=24.8

[RECON map]
TNO is 34.6 AU from the Sun and 33.8 AU from the Earth.
The TNO is moving 19.2 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 332 seconds.
The 1-sigma cross-track error in the shadow position is 3548 km.
The sky-plane scale is 24480.4 km/arcsec.

The TNO has an absolute magnitude Hv=9.4
Diameter=79.4 km assuming a 5% albedo -- 4.1 sec chord
Diameter=32.4 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 15VJ166, (2018/12/21 06:34UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.7 +16:32:45  0.8 15.44   2
Menkar         03:03:16.4 +04:09:47  2.5 14.65  26
PPM 119253     03:40:30.3 +16:35:49  6.2  1.95  13
PPM 119121     03:30:47.0 +16:49:36  7.0  0.43  15
PPM 119153     03:33:10.7 +16:47:27  8.6  0.22  15
15VJ166        03:32:30.2 +16:56:27 15.1        15
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 2.7 sigma about the mid-time.
The median site spacing is 23.1 km RECON observability=1.0 and success probability=5.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:32:13 -58.9 Dark Up 54.7 206.4 Up 06:17:13 - 06:47:13 7847
Summerland 06:32:15 -58.8 Dark Up 54.8 205.9 Up 06:17:15 - 06:47:15 7847
Penticton 06:32:14 -59.2 Dark Up 55.0 206.4 Up 06:17:14 - 06:47:14 7814
Okanagan Falls 06:32:14 -59.3 Dark Up 55.2 206.5 Up 06:17:14 - 06:47:14 7797
Oliver 06:32:13 -59.4 Dark Up 55.4 206.6 Up 06:17:13 - 06:47:13 7781
Anarchist Mountain Observatory 06:32:13 -59.6 Dark Up 55.5 207.0 Up 06:17:13 - 06:47:13 7762
Oroville 06:32:13 -59.7 Dark Up 55.5 207.0 Up 06:17:13 - 06:47:13 7756
Tonasket 06:32:13 -59.8 Dark Up 55.7 207.1 Up 06:17:13 - 06:47:13 7733
Okanogan 06:32:14 -60.0 Dark Up 56.1 207.1 Up 06:17:14 - 06:47:14 7703
Brewster 06:32:14 -60.1 Dark Up 56.4 207.0 Up 06:17:14 - 06:47:14 7678
Manson/Chelan 06:32:16 -60.1 Dark Up 56.7 206.5 Up 06:17:16 - 06:47:16 7662
Entiat 06:32:16 -60.3 Dark Up 56.9 206.5 Up 06:17:16 - 06:47:16 7641
Wenatchee 06:32:16 -60.4 Dark Up 57.2 206.5 Up 06:17:16 - 06:47:16 7618
Ellensburg 06:32:17 -60.6 Dark Up 57.6 206.5 Up 06:17:17 - 06:47:17 7580
Yakima 06:32:17 -60.9 Dark Up 58.0 206.7 Up 06:17:17 - 06:47:17 7540
Toppenish/White Swan 06:32:17 -61.1 Dark Up 58.1 207.2 Up 06:17:17 - 06:47:17 7517
Pasco 06:32:12 -61.8 Dark Up 57.8 209.4 Up 06:17:12 - 06:47:12 7492
Goldendale 06:32:19 -61.3 Dark Up 58.7 206.9 Up 06:17:19 - 06:47:19 7468
PNWRO 06:32:10 -62.1 Dark Up 57.9 210.0 Up 06:17:10 - 06:47:10 7465
George/Umatilla 06:32:13 -61.9 Dark Up 58.2 209.3 Up 06:17:13 - 06:47:13 7461
The Dalles 06:32:20 -61.3 Dark Up 59.0 206.4 Up 06:17:20 - 06:47:20 7450
Maupin 06:32:20 -61.6 Dark Up 59.4 206.9 Up 06:17:20 - 06:47:20 7407
Madras/Culver 06:32:20 -62.0 Dark Up 59.9 207.2 Up 06:17:20 - 06:47:20 7353
Sisters 06:32:22 -61.9 Dark Up 60.3 206.7 Up 06:17:22 - 06:47:22 7325
Redmond 06:32:20 -62.2 Dark Up 60.2 207.4 Up 06:17:20 - 06:47:20 7318
Bend 06:32:21 -62.2 Dark Up 60.5 207.4 Up 06:17:21 - 06:47:21 7299
Oregon Observatory 06:32:22 -62.3 Dark Up 60.7 207.3 Up 06:17:22 - 06:47:22 7283
La Pine/Gilchrist 06:32:21 -62.4 Dark Up 60.9 207.3 Up 06:17:21 - 06:47:21 7263
North Lake 06:32:19 -63.0 Dark Up 61.0 208.8 Up 06:17:19 - 06:47:19 7212
Chiloquin 06:32:23 -62.9 Dark Up 62.0 207.6 Up 06:17:23 - 06:47:23 7156
Paisley 06:32:18 -63.5 Dark Up 61.4 209.9 Up 06:17:18 - 06:47:18 7152
Klamath Falls 06:32:24 -63.1 Dark Up 62.2 208.1 Up 06:17:24 - 06:47:24 7120
Lakeview 06:32:17 -64.0 Dark Up 61.8 210.8 Up 06:17:17 - 06:47:17 7099
Tulelake 06:32:21 -63.5 Dark Up 62.4 208.9 Up 06:17:21 - 06:47:21 7089
Cedarville 06:32:17 -64.5 Dark Up 62.3 211.7 Up 06:17:17 - 06:47:17 7030
Fall River/Burney 06:32:22 -64.0 Dark Up 63.1 209.9 Up 06:17:22 - 06:47:22 6996
Susanville 06:32:19 -64.9 Dark Up 63.4 212.0 Up 06:17:19 - 06:47:19 6922
Greenville 06:32:21 -64.8 Dark Up 63.7 211.7 Up 06:17:21 - 06:47:21 6897
Gimple 06:32:20 -64.9 Dark Up 63.7 211.9 Up 06:17:20 - 06:47:20 6896
Quincy 06:32:20 -65.0 Dark Up 63.9 211.9 Up 06:17:20 - 06:47:20 6876
Portola 06:32:18 -65.3 Dark Up 63.8 213.0 Up 06:17:18 - 06:47:18 6857
Reno 06:32:15 -65.9 Dark Up 63.8 214.5 Up 06:17:15 - 06:47:15 6822
Carson City 06:32:15 -66.1 Dark Up 64.1 215.0 Up 06:17:15 - 06:47:15 6785
Niwot 06:31:16 -72.4 Dark Up 55.4 236.4 Up 06:16:16 - 06:46:16 6759
Gardnerville 06:32:16 -66.3 Dark Up 64.2 215.4 Up 06:17:16 - 06:47:16 6759
Yerington 06:32:13 -66.6 Dark Up 63.9 216.4 Up 06:17:13 - 06:47:13 6757
Hawthorne 06:32:11 -67.2 Dark Up 64.1 218.0 Up 06:17:11 - 06:47:11 6703
Lee Vining 06:32:13 -67.2 Dark Up 64.7 217.8 Up 06:17:13 - 06:47:13 6649
Tonopah 06:32:05 -68.4 Dark Up 63.7 221.2 Up 06:17:05 - 06:47:05 6638
Bishop 06:32:10 -68.0 Dark Up 64.8 220.0 Up 06:17:10 - 06:47:10 6578
Beatty 06:32:03 -69.3 Dark Up 64.3 223.6 Up 06:17:03 - 06:47:03 6511
Lone Pine 06:32:09 -68.7 Dark Up 65.2 221.7 Up 06:17:09 - 06:47:09 6494
Indian Springs 06:31:58 -70.2 Dark Up 64.0 225.9 Up 06:16:58 - 06:46:58 6465
Henderson 06:31:56 -71.0 Dark Up 63.9 227.9 Up 06:16:56 - 06:46:56 6402
CPSLO 06:32:20 -67.5 Dark Up 67.6 218.4 Up 06:17:20 - 06:47:20 6390
Searchlight/Boulder City 06:31:55 -71.4 Dark Up 64.3 228.9 Up 06:16:55 - 06:46:55 6340
Patrick 06:31:50 -72.1 Dark Up 63.7 230.7 Up 06:16:50 - 06:46:50 6324
Laughlin/Bullhead City 06:31:54 -71.8 Dark Up 64.3 229.9 Up 06:16:54 - 06:46:54 6305
Kingman/Dolan Springs 06:31:51 -72.1 Dark Up 63.9 230.8 Up 06:16:51 - 06:46:51 6302
DCO 06:31:47 -72.7 Dark Up 63.4 232.3 Up 06:16:47 - 06:46:47 6285
Mohave Valley 06:31:54 -71.9 Dark Up 64.4 230.4 Up 06:16:54 - 06:46:54 6276
Wildwood 06:32:12 -69.5 Dark Up 67.4 224.5 Up 06:17:12 - 06:47:12 6235
Lake Havasu City 06:31:52 -72.3 Dark Up 64.5 231.4 Up 06:16:52 - 06:46:52 6231
Parker 06:31:52 -72.5 Dark Up 64.7 232.1 Up 06:16:52 - 06:46:52 6193
Idyllwild 06:32:03 -71.0 Dark Up 66.5 228.7 Up 06:17:03 - 06:47:03 6175
Blythe 06:31:54 -72.6 Dark Up 65.2 232.5 Up 06:16:54 - 06:46:54 6140
Calipatria 06:31:58 -72.2 Dark Up 66.1 231.8 Up 06:16:58 - 06:46:58 6096
Yuma 06:31:54 -73.1 Dark Up 65.8 234.0 Up 06:16:54 - 06:46:54 6041

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 15VJ166, (2018/12/21 06:34UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 15.44   2
Menkar         03:02:16.8 +04:05:21  2.5 14.65  26
PPM 119253     03:39:25.8 +16:32:11  6.2  1.95  13
PPM 119121     03:29:42.6 +16:45:45  7.0  0.43  15
PPM 119153     03:32:06.2 +16:43:39  8.6  0.22  15
15VJ166        03:31:25.7 +16:52:38 15.1        15
Positions are for J2000

Event circumstances last updated at 2018/12/01 22:11:02 UT

Marc W. Buie, Southwest Research Institute

RECON