RECON: TNO occultation with 14YJ50

Event between 14YJ50 and star GA1140:03125794 with event index number of 322065

Geocentric closest approach at 2019/02/10 04:06:10 UTC

J2000 position of star is 08:56:34.4 +24:11:23
Equinox of date position of star is 08:57:41.0 +24:06:57
Stellar brightness G=14.2, use SENSEUP=64
Star is 111 degrees from the moon. Moon is 24% illuminated.
TNO apparent brightness V=22.3

[RECON map]
TNO is 35.5 AU from the Sun and 34.5 AU from the Earth.
The TNO is moving 24.5 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 79 seconds.
The 1-sigma cross-track error in the shadow position is 1411 km.
The sky-plane scale is 25023.1 km/arcsec.

The TNO has an absolute magnitude Hv=6.8
Diameter=271.7 km assuming a 5% albedo -- 10.8 sec chord
Diameter=110.9 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 14YJ50, (2019/02/10 04:06UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:29.0 +27:58:43  1.1 16.44  95
69Nu Cnc       09:03:51.1 +24:22:35  5.4  1.43 113
PPM 099167     08:57:20.7 +24:22:24  7.1  0.27 111
PPM 099171     08:57:32.0 +23:52:25  9.7  0.24 111
14YJ50         08:57:41.3 +24:06:56 14.2       111
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 5.0 sigma about the mid-time.
The median site spacing is 24.3 km RECON observability=1.0 and success probability=34.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 04:08:51 -29.7 Dark Up 42.9 103.6 Up 04:01:46 - 04:15:55 1551
Summerland 04:08:52 -29.5 Dark Up 42.7 103.2 Up 04:01:47 - 04:15:56 1551
Penticton 04:08:52 -29.7 Dark Up 42.8 103.1 Up 04:01:47 - 04:15:56 1517
Okanagan Falls 04:08:52 -29.7 Dark Up 42.9 102.9 Up 04:01:47 - 04:15:56 1498
Oliver 04:08:53 -29.8 Dark Up 42.9 102.8 Up 04:01:48 - 04:15:57 1481
Anarchist Mountain Observatory 04:08:53 -30.0 Dark Up 43.1 102.8 Up 04:01:48 - 04:15:57 1461
Oroville 04:08:53 -29.9 Dark Up 43.1 102.6 Up 04:01:49 - 04:15:58 1455
Tonasket 04:08:53 -30.0 Dark Up 43.1 102.4 Up 04:01:49 - 04:15:58 1431
Okanogan 04:08:54 -30.0 Dark Up 43.1 102.0 Up 04:01:49 - 04:15:58 1398
Brewster 04:08:55 -29.9 Dark Up 43.0 101.6 Up 04:01:50 - 04:15:59 1373
Manson/Chelan 04:08:56 -29.7 Dark Up 42.8 101.1 Up 04:01:52 - 04:16:01 1356
Entiat 04:08:57 -29.7 Dark Up 42.8 100.8 Up 04:01:52 - 04:16:01 1335
Wenatchee 04:08:57 -29.7 Dark Up 42.8 100.5 Up 04:01:52 - 04:16:01 1310
Ellensburg 04:08:58 -29.6 Dark Up 42.7 99.9 Up 04:01:54 - 04:16:03 1271
Yakima 04:08:59 -29.7 Dark Up 42.8 99.6 Up 04:01:55 - 04:16:04 1229
Toppenish/White Swan 04:08:59 -29.8 Dark Up 42.9 99.5 Up 04:01:55 - 04:16:04 1205
Pasco 04:08:57 -30.7 Dark Up 43.8 100.4 Up 04:01:52 - 04:16:01 1176
Goldendale 04:09:01 -29.6 Dark Up 42.7 98.6 Up 04:01:56 - 04:16:05 1153
PNWRO 04:08:56 -30.9 Dark Up 44.0 100.4 Up 04:01:52 - 04:16:01 1148
George/Umatilla 04:08:57 -30.6 Dark Up 43.7 99.9 Up 04:01:53 - 04:16:02 1144
The Dalles 04:09:02 -29.4 Dark Up 42.5 98.1 Up 04:01:58 - 04:16:07 1135
Maupin 04:09:02 -29.6 Dark Up 42.7 97.8 Up 04:01:58 - 04:16:07 1090
Madras/Culver 04:09:03 -29.6 Dark Up 42.7 97.3 Up 04:01:59 - 04:16:08 1034
Sisters 04:09:05 -29.4 Dark Up 42.4 96.7 Up 04:02:01 - 04:16:10 1005
Redmond 04:09:04 -29.7 Dark Up 42.7 97.0 Up 04:01:59 - 04:16:08 998
Bend 04:09:04 -29.6 Dark Up 42.6 96.7 Up 04:02:00 - 04:16:09 977
Oregon Observatory 04:09:05 -29.5 Dark Up 42.6 96.4 Up 04:02:01 - 04:16:10 961
La Pine/Gilchrist 04:09:06 -29.5 Dark Up 42.5 96.2 Up 04:02:01 - 04:16:10 940
North Lake 04:09:05 -30.0 Dark Up 43.0 96.2 Up 04:02:00 - 04:16:09 887
Chiloquin 04:09:08 -29.4 Dark Up 42.4 94.9 Up 04:02:03 - 04:16:12 829
Paisley 04:09:05 -30.4 Dark Up 43.3 96.0 Up 04:02:01 - 04:16:10 824
Klamath Falls 04:09:08 -29.5 Dark Up 42.5 94.6 Up 04:02:04 - 04:16:13 792
Lakeview 04:09:05 -30.6 Dark Up 43.5 95.6 Up 04:02:01 - 04:16:10 768
Tulelake 04:09:08 -29.8 Dark Up 42.7 94.6 Up 04:02:04 - 04:16:13 759
Cedarville 04:09:06 -30.8 Dark Up 43.7 95.2 Up 04:02:01 - 04:16:10 696
Fall River/Burney 04:09:09 -30.0 Dark Up 42.9 93.8 Up 04:02:05 - 04:16:14 662
Susanville 04:09:08 -30.6 Dark Up 43.5 93.8 Up 04:02:04 - 04:16:13 585
Greenville 04:09:09 -30.4 Dark Up 43.3 93.3 Up 04:02:05 - 04:16:14 560
Gimple 04:09:09 -30.5 Dark Up 43.3 93.4 Up 04:02:05 - 04:16:14 558
Quincy 04:09:10 -30.4 Dark Up 43.3 93.1 Up 04:02:05 - 04:16:14 538
Portola 04:09:09 -30.8 Dark Up 43.6 93.3 Up 04:02:04 - 04:16:13 518
Reno 04:09:07 -31.3 Dark Up 44.2 93.5 Up 04:02:03 - 04:16:12 481
Carson City 04:09:08 -31.4 Dark Up 44.2 93.2 Up 04:02:03 - 04:16:12 442
Gardnerville 04:09:08 -31.5 Dark Up 44.2 93.0 Up 04:02:03 - 04:16:12 415
Yerington 04:09:07 -31.9 Dark Up 44.7 93.4 Up 04:02:02 - 04:16:11 412
Niwot 04:08:29 -42.0 Dark Up 55.0 105.6 Up 04:01:24 - 04:15:33 409
Hawthorne 04:09:06 -32.4 Dark Up 45.1 93.3 Up 04:02:01 - 04:16:10 355
Lee Vining 04:09:08 -32.1 Dark Up 44.8 92.4 Up 04:02:03 - 04:16:12 301
Tonopah 04:09:03 -33.5 Dark Up 46.3 93.8 Up 04:01:58 - 04:16:07 287
Bishop 04:09:06 -32.7 Dark Up 45.4 92.3 Up 04:02:02 - 04:16:11 227
Beatty 04:09:03 -34.0 Dark Up 46.7 92.8 Up 04:01:58 - 04:16:07 156
Lone Pine 04:09:06 -33.0 Dark Up 45.7 91.7 Up 04:02:02 - 04:16:11 141
Indian Springs 04:09:00 -34.9 Dark Up 47.6 93.2 Up 04:01:56 - 04:16:05 108
Henderson 04:08:59 -35.6 Dark Up 48.1 93.0 Up 04:01:55 - 04:16:04 42
CPSLO 04:09:14 -31.1 Dark Up 43.6 88.9 Up 04:02:10 - 04:16:19 37
Searchlight/Boulder City 04:08:59 -35.7 Dark Up 48.2 92.4 Up 04:01:55 - 04:16:04 -21
Patrick 04:08:57 -36.5 Dark Up 49.1 93.0 Up 04:01:52 - 04:16:01 -38
Laughlin/Bullhead City 04:08:59 -36.0 Dark Up 48.5 92.3 Up 04:01:54 - 04:16:03 -57
Kingman/Dolan Springs 04:08:57 -36.4 Dark Up 48.9 92.6 Up 04:01:53 - 04:16:02 -61
DCO 04:08:55 -37.2 Dark Up 49.7 93.1 Up 04:01:50 - 04:15:59 -79
Mohave Valley 04:08:59 -36.0 Dark Up 48.5 92.0 Up 04:01:54 - 04:16:03 -87
Wildwood 04:09:10 -32.9 Dark Up 45.3 88.9 Up 04:02:06 - 04:16:15 -124
Lake Havasu City 04:08:59 -36.3 Dark Up 48.8 91.7 Up 04:01:54 - 04:16:03 -134
Parker 04:08:59 -36.4 Dark Up 48.8 91.3 Up 04:01:54 - 04:16:03 -172
Idyllwild 04:09:06 -34.4 Dark Up 46.8 89.5 Up 04:02:01 - 04:16:10 -188
Blythe 04:09:00 -36.2 Dark Up 48.5 90.5 Up 04:01:55 - 04:16:04 -226
Calipatria 04:09:03 -35.5 Dark Up 47.8 89.5 Up 04:01:58 - 04:16:07 -269
Yuma 04:09:01 -36.3 Dark Up 48.5 89.5 Up 04:01:56 - 04:16:05 -327

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 14YJ50, (2019/02/10 04:06UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 16.44  95
69Nu Cnc       09:02:44.2 +24:27:10  5.4  1.43 113
PPM 099167     08:56:13.7 +24:26:51  7.1  0.27 111
PPM 099171     08:56:25.1 +23:56:52  9.7  0.24 111
14YJ50         08:56:34.4 +24:11:23 14.2       111
Positions are for J2000

Event circumstances last updated at 2019/01/04 19:16:39 UT

Marc W. Buie, Southwest Research Institute

RECON