RECON: TNO occultation with 15VC173

Event between 15VC173 and star GA1060:00348926 with event index number of 1016419

Geocentric closest approach at 2019/01/02 06:24:32 UTC

J2000 position of star is 03:24:14.7 +17:32:55
Equinox of date position of star is 03:25:19.1 +17:36:52
Stellar brightness G=9.3, use SENSEUP=2
Star is 174 degrees from the moon. Moon is 14% illuminated.
TNO apparent brightness V=25.0

[RECON map]
TNO is 43.0 AU from the Sun and 42.3 AU from the Earth.
The TNO is moving 15.7 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 349 seconds.
The 1-sigma cross-track error in the shadow position is 3591 km.
The sky-plane scale is 30691.7 km/arcsec.

The TNO has an absolute magnitude Hv=8.6
Diameter=114.3 km assuming a 5% albedo -- 7.3 sec chord
Diameter=46.7 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 15VC173, (2019/01/02 06:25UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.8 +16:32:46  0.8 17.16 169
Menkar         03:03:16.5 +04:09:47  2.5 14.49 164
63Tau2Ari      03:23:51.1 +20:48:31  6.2  3.21 172
PPM 119101     03:29:13.9 +17:13:56  8.5  1.01 175
PPM 119056     03:25:19.3 +17:36:54  9.8  0.00 174
15VC173        03:25:19.4 +17:36:53  9.3       174
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 2.6 sigma about the mid-time.
The median site spacing is 22.9 km RECON observability=1.0 and success probability=13.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:21:52 -56.8 Dark Down 51.2 223.0 Up 06:06:52 - 06:36:52 2305
Summerland 06:21:53 -56.6 Dark Down 51.4 222.6 Up 06:06:53 - 06:36:53 2302
Penticton 06:21:52 -56.9 Dark Down 51.6 223.1 Up 06:06:52 - 06:36:52 2270
Okanagan Falls 06:21:51 -57.0 Dark Down 51.7 223.2 Up 06:06:51 - 06:36:51 2252
Oliver 06:21:52 -57.2 Dark Down 51.8 223.4 Up 06:06:52 - 06:36:52 2235
Anarchist Mountain Observatory 06:21:51 -57.4 Dark Down 51.9 223.8 Up 06:06:51 - 06:36:51 2218
Oroville 06:21:51 -57.4 Dark Down 52.0 223.8 Up 06:06:51 - 06:36:51 2211
Tonasket 06:21:50 -57.6 Dark Down 52.1 224.0 Up 06:06:50 - 06:36:50 2188
Okanogan 06:21:51 -57.7 Dark Down 52.4 224.1 Up 06:06:51 - 06:36:51 2155
Brewster 06:21:51 -57.8 Dark Down 52.7 224.1 Up 06:06:51 - 06:36:51 2129
Manson/Chelan 06:21:52 -57.8 Dark Down 53.0 223.8 Up 06:06:52 - 06:36:52 2110
Entiat 06:21:53 -57.9 Dark Down 53.2 223.9 Up 06:06:53 - 06:36:53 2089
Wenatchee 06:21:53 -58.0 Dark Down 53.5 224.0 Up 06:06:53 - 06:36:53 2064
Ellensburg 06:21:53 -58.1 Dark Down 53.9 224.1 Up 06:06:53 - 06:36:53 2024
Yakima 06:21:53 -58.4 Dark Down 54.2 224.4 Up 06:06:53 - 06:36:53 1984
Toppenish/White Swan 06:21:52 -58.6 Dark Down 54.2 224.9 Up 06:06:52 - 06:36:52 1961
Pasco 06:21:47 -59.4 Dark Down 53.7 226.7 Up 06:06:47 - 06:36:47 1943
PNWRO 06:21:46 -59.6 Dark Down 53.8 227.3 Up 06:06:46 - 06:36:46 1917
George/Umatilla 06:21:47 -59.5 Dark Down 54.0 226.7 Up 06:06:47 - 06:36:47 1910
Goldendale 06:21:54 -58.7 Dark Down 54.8 224.8 Up 06:06:54 - 06:36:54 1908
The Dalles 06:21:55 -58.7 Dark Down 55.2 224.5 Up 06:06:55 - 06:36:55 1887
Maupin 06:21:54 -59.0 Dark Down 55.4 225.1 Up 06:06:54 - 06:36:54 1844
Madras/Culver 06:21:54 -59.3 Dark Down 55.8 225.6 Up 06:06:54 - 06:36:54 1789
Sisters 06:21:56 -59.2 Dark Down 56.3 225.3 Up 06:06:56 - 06:36:56 1758
Redmond 06:21:54 -59.5 Dark Down 56.1 225.9 Up 06:06:54 - 06:36:54 1753
Bend 06:21:55 -59.5 Dark Down 56.3 225.9 Up 06:06:55 - 06:36:55 1732
Oregon Observatory 06:21:55 -59.5 Dark Down 56.5 225.9 Up 06:06:55 - 06:36:55 1715
La Pine/Gilchrist 06:21:55 -59.6 Dark Down 56.7 226.1 Up 06:06:55 - 06:36:55 1694
North Lake 06:21:52 -60.2 Dark Down 56.7 227.4 Up 06:06:52 - 06:36:52 1646
Paisley 06:21:50 -60.7 Dark Down 56.8 228.5 Up 06:06:50 - 06:36:50 1588
Chiloquin 06:21:57 -60.0 Dark Down 57.6 226.8 Up 06:06:57 - 06:36:57 1582
Klamath Falls 06:21:56 -60.2 Dark Down 57.8 227.3 Up 06:06:56 - 06:36:56 1546
Lakeview 06:21:49 -61.1 Dark Down 57.1 229.4 Up 06:06:49 - 06:36:49 1534
Tulelake 06:21:54 -60.6 Dark Down 57.8 228.1 Up 06:06:54 - 06:36:54 1517
Cedarville 06:21:48 -61.6 Dark Down 57.4 230.4 Up 06:06:48 - 06:36:48 1465
Fall River/Burney 06:21:54 -61.1 Dark Down 58.4 229.3 Up 06:06:54 - 06:36:54 1422
Susanville 06:21:49 -61.9 Dark Down 58.4 231.1 Up 06:06:49 - 06:36:49 1352
Greenville 06:21:51 -61.8 Dark Down 58.7 231.1 Up 06:06:51 - 06:36:51 1325
Gimple 06:21:51 -61.9 Dark Down 58.7 231.2 Up 06:06:51 - 06:36:51 1324
Quincy 06:21:51 -61.9 Dark Down 58.8 231.3 Up 06:06:51 - 06:36:51 1304
Niwot 06:20:38 -70.5 Dark Down 48.5 249.1 Up 06:05:38 - 06:35:38 1294
Portola 06:21:48 -62.3 Dark Down 58.6 232.2 Up 06:06:48 - 06:36:48 1288
Reno 06:21:45 -62.9 Dark Down 58.4 233.4 Up 06:06:45 - 06:36:45 1256
Carson City 06:21:45 -63.1 Dark Down 58.6 233.9 Up 06:06:45 - 06:36:45 1218
Yerington 06:21:42 -63.6 Dark Down 58.3 235.0 Up 06:06:42 - 06:36:42 1195
Gardnerville 06:21:44 -63.2 Dark Down 58.7 234.3 Up 06:06:44 - 06:36:44 1192
Hawthorne 06:21:38 -64.2 Dark Down 58.3 236.3 Up 06:06:38 - 06:36:38 1143
Tonopah 06:21:31 -65.3 Dark Down 57.6 238.7 Up 06:06:31 - 06:36:31 1087
Lee Vining 06:21:41 -64.1 Dark Down 58.9 236.4 Up 06:06:41 - 06:36:41 1085
Bishop 06:21:37 -64.9 Dark Down 58.7 238.2 Up 06:06:37 - 06:36:37 1018
Beatty 06:21:29 -66.2 Dark Down 57.9 240.9 Up 06:06:29 - 06:36:29 962
Lone Pine 06:21:34 -65.5 Dark Down 58.9 239.7 Up 06:06:34 - 06:36:34 936
Indian Springs 06:21:23 -67.1 Dark Down 57.3 242.6 Up 06:06:23 - 06:36:23 923
Henderson 06:21:19 -67.9 Dark Down 57.0 244.1 Up 06:06:19 - 06:36:19 864
CPSLO 06:21:47 -64.1 Dark Down 61.3 238.3 Up 06:06:47 - 06:36:47 811
Searchlight/Boulder City 06:21:18 -68.2 Dark Down 57.2 245.0 Up 06:06:18 - 06:36:18 802
Patrick 06:21:13 -69.0 Dark Down 56.5 246.2 Up 06:06:13 - 06:36:13 794
Kingman/Dolan Springs 06:21:14 -68.9 Dark Down 56.7 246.3 Up 06:06:14 - 06:36:14 770
Laughlin/Bullhead City 06:21:16 -68.6 Dark Down 57.1 245.8 Up 06:06:16 - 06:36:16 769
DCO 06:21:09 -69.6 Dark Down 56.1 247.3 Up 06:06:09 - 06:36:09 759
Mohave Valley 06:21:16 -68.7 Dark Down 57.2 246.2 Up 06:06:16 - 06:36:16 740
Lake Havasu City 06:21:15 -69.1 Dark Down 57.2 247.0 Up 06:06:15 - 06:36:15 696
Wildwood 06:21:37 -66.1 Dark Down 60.5 242.8 Up 06:06:37 - 06:36:37 669
Parker 06:21:14 -69.3 Dark Down 57.3 247.5 Up 06:06:14 - 06:36:14 658
Idyllwild 06:21:26 -67.7 Dark Down 59.3 245.5 Up 06:06:26 - 06:36:26 622
Blythe 06:21:15 -69.3 Dark Down 57.7 248.0 Up 06:06:15 - 06:36:15 602
Calipatria 06:21:20 -68.8 Dark Down 58.6 247.8 Up 06:06:20 - 06:36:20 551
Yuma 06:21:15 -69.6 Dark Down 58.1 249.3 Up 06:06:15 - 06:36:15 502

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 15VC173, (2019/01/02 06:25UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 17.16 169
Menkar         03:02:16.8 +04:05:21  2.5 14.49 164
63Tau2Ari      03:22:45.2 +20:44:31  6.2  3.21 172
PPM 119101     03:28:09.2 +17:10:03  8.5  1.01 175
PPM 119056     03:24:14.6 +17:32:55  9.8  0.00 174
15VC173        03:24:14.7 +17:32:55  9.3       174
Positions are for J2000

Event circumstances last updated at 2018/12/04 05:05:27 UT

Marc W. Buie, Southwest Research Institute

RECON