RECON: TNO occultation with 14YX49

Event between 14YX49 and star UC4-617-044708 with event index number of 173555

Geocentric closest approach at 2018/12/20 12:03:11 UTC

J2000 position of star is 08:49:48.6 +33:19:25
Equinox of date position of star is 08:50:55.3 +33:15:21
Stellar brightness R=16.0, use SENSEUP=128
Star is 69 degrees from the moon. Moon is 93% illuminated.
TNO apparent brightness V=21.9

[RECON map]
TNO is 20.0 AU from the Sun and 19.2 AU from the Earth.
The TNO is moving 19.6 km/sec on the sky relative to the star, or, 5.1 arcsec/hr.
The 1-sigma error in the time of the event is 256 seconds.
The 1-sigma cross-track error in the shadow position is 3482 km.
The sky-plane scale is 13930.4 km/arcsec.

The TNO has an absolute magnitude Hv=8.8
Diameter=107.2 km assuming a 5% albedo -- 5.5 sec chord
Diameter=43.7 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 14YX49, (2018/12/20 12:03UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:28.5 +27:58:44  1.1 14.83  56
PPM 074073     08:55:07.1 +35:27:56  6.1  2.37  70
PPM 074024     08:51:42.7 +33:12:47  6.7  0.16  69
14YX49         08:50:59.1 +33:15:07 16.0        70
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 3.5 sigma about the mid-time.
The median site spacing is 17.3 km RECON observability=1.0 and success probability=8.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Niwot 12:01:59 -25.3 Dark Down 63.7 265.2 Up 11:46:59 - 12:16:59 4057
Oroville 12:03:13 -35.7 Dark Up 69.5 227.2 Up 11:48:13 - 12:18:13 3818
Tonasket 12:03:12 -35.7 Dark Up 69.6 227.6 Up 11:48:12 - 12:18:12 3802
Okanogan 12:03:11 -35.8 Dark Up 69.9 228.0 Up 11:48:11 - 12:18:11 3771
Brewster 12:03:10 -36.0 Dark Up 70.2 228.2 Up 11:48:10 - 12:18:10 3741
Manson/Chelan 12:03:10 -36.2 Dark Up 70.5 227.9 Up 11:48:10 - 12:18:10 3708
Entiat 12:03:10 -36.3 Dark Up 70.7 228.2 Up 11:48:10 - 12:18:10 3688
Wenatchee 12:03:09 -36.4 Dark Up 70.9 228.5 Up 11:48:09 - 12:18:09 3665
Pasco 12:03:02 -35.6 Dark Up 71.0 233.5 Up 11:48:02 - 12:18:02 3647
PNWRO 12:03:00 -35.5 Dark Up 71.1 234.5 Up 11:48:00 - 12:18:00 3642
Ellensburg 12:03:08 -36.6 Dark Up 71.3 229.0 Up 11:48:08 - 12:18:08 3624
George/Umatilla 12:03:00 -35.8 Dark Up 71.4 233.8 Up 11:48:00 - 12:18:00 3611
Yakima 12:03:06 -36.6 Dark Up 71.6 229.8 Up 11:48:06 - 12:18:06 3594
Toppenish/White Swan 12:03:05 -36.5 Dark Up 71.6 230.7 Up 11:48:05 - 12:18:05 3587
Goldendale 12:03:04 -36.8 Dark Up 72.2 231.1 Up 11:48:04 - 12:18:04 3524
The Dalles 12:03:04 -37.1 Dark Up 72.6 230.9 Up 11:48:04 - 12:18:04 3488
Maupin 12:03:01 -37.1 Dark Up 72.8 232.1 Up 11:48:01 - 12:18:01 3463
Madras/Culver 12:03:00 -37.1 Dark Up 73.1 233.5 Up 11:48:00 - 12:18:00 3420
Redmond 12:02:58 -37.2 Dark Up 73.4 234.3 Up 11:47:58 - 12:17:58 3391
Sisters 12:03:00 -37.5 Dark Up 73.6 233.4 Up 11:48:00 - 12:18:00 3371
Bend 12:02:58 -37.3 Dark Up 73.6 234.6 Up 11:47:58 - 12:17:58 3368
Oregon Observatory 12:02:57 -37.4 Dark Up 73.8 234.8 Up 11:47:57 - 12:17:57 3347
North Lake 12:02:54 -37.0 Dark Up 73.8 237.7 Up 11:47:54 - 12:17:54 3330
La Pine/Gilchrist 12:02:57 -37.4 Dark Up 73.9 235.2 Up 11:47:57 - 12:17:57 3329
Paisley 12:02:50 -36.8 Dark Up 73.9 240.0 Up 11:47:50 - 12:17:50 3309
Lakeview 12:02:47 -36.7 Dark Up 74.0 241.9 Up 11:47:47 - 12:17:47 3283
Cedarville 12:02:44 -36.5 Dark Up 74.2 244.3 Up 11:47:44 - 12:17:44 3244
Chiloquin 12:02:54 -37.7 Dark Up 74.8 237.8 Up 11:47:54 - 12:17:54 3225
DCO 12:01:57 -30.7 Dark Up 70.2 271.7 Up 11:46:57 - 12:16:57 3207
Klamath Falls 12:02:51 -37.7 Dark Up 74.9 239.0 Up 11:47:51 - 12:17:51 3204
Tulelake 12:02:50 -37.5 Dark Up 74.8 240.5 Up 11:47:50 - 12:17:50 3201
Patrick 12:02:01 -31.3 Dark Up 70.8 270.5 Up 11:47:01 - 12:17:01 3183
Tonopah 12:02:21 -34.2 Dark Up 73.2 259.7 Up 11:47:21 - 12:17:21 3164
Henderson 12:02:06 -32.3 Dark Up 71.6 268.0 Up 11:47:06 - 12:17:06 3157
Kingman/Dolan Springs 12:02:00 -31.4 Dark Up 70.9 271.0 Up 11:47:00 - 12:17:00 3155
Indian Springs 12:02:10 -32.9 Dark Up 72.2 265.8 Up 11:47:10 - 12:17:10 3151
Fall River/Burney 12:02:45 -37.5 Dark Up 75.2 243.6 Up 11:47:45 - 12:17:45 3137
Susanville 12:02:41 -36.9 Dark Up 75.0 247.1 Up 11:47:41 - 12:17:41 3132
Laughlin/Bullhead City 12:02:01 -31.8 Dark Up 71.3 270.8 Up 11:47:01 - 12:17:01 3119
Searchlight/Boulder City 12:02:03 -32.2 Dark Up 71.6 269.7 Up 11:47:03 - 12:17:03 3118
Reno 12:02:35 -36.3 Dark Up 74.7 251.4 Up 11:47:35 - 12:17:35 3116
Yerington 12:02:31 -35.7 Dark Up 74.4 254.3 Up 11:47:31 - 12:17:31 3114
Hawthorne 12:02:27 -35.3 Dark Up 74.1 256.5 Up 11:47:27 - 12:17:27 3112
Beatty 12:02:15 -33.7 Dark Up 73.0 263.9 Up 11:47:15 - 12:17:15 3107
Mohave Valley 12:02:00 -31.8 Dark Up 71.3 271.6 Up 11:47:00 - 12:17:00 3100
Gimple 12:02:40 -37.1 Dark Up 75.2 247.7 Up 11:47:40 - 12:17:40 3099
Portola 12:02:38 -36.8 Dark Up 75.1 249.5 Up 11:47:38 - 12:17:38 3098
Greenville 12:02:41 -37.1 Dark Up 75.3 247.5 Up 11:47:41 - 12:17:41 3094
Carson City 12:02:33 -36.2 Dark Up 74.8 252.7 Up 11:47:33 - 12:17:33 3090
Lake Havasu City 12:01:58 -31.5 Dark Up 71.1 272.9 Up 11:46:58 - 12:16:58 3087
Quincy 12:02:40 -37.1 Dark Up 75.4 248.2 Up 11:47:40 - 12:17:40 3079
Gardnerville 12:02:33 -36.2 Dark Up 74.9 253.6 Up 11:47:33 - 12:17:33 3075
Parker 12:01:57 -31.5 Dark Up 71.1 273.9 Up 11:46:57 - 12:16:57 3063
Lee Vining 12:02:26 -35.7 Dark Up 74.6 257.9 Up 11:47:26 - 12:17:26 3039
Bishop 12:02:22 -35.1 Dark Up 74.2 260.8 Up 11:47:22 - 12:17:22 3039
Blythe 12:01:54 -31.7 Dark Up 71.3 275.4 Up 11:46:54 - 12:16:54 3004
Lone Pine 12:02:17 -34.8 Dark Up 74.0 263.8 Up 11:47:17 - 12:17:17 3002
Yuma 12:01:51 -31.6 Dark Up 71.2 278.1 Up 11:46:51 - 12:16:51 2933
Calipatria 12:01:56 -32.3 Dark Up 72.0 276.6 Up 11:46:56 - 12:16:56 2906
Idyllwild 12:02:01 -33.4 Dark Up 73.0 274.3 Up 11:47:01 - 12:17:01 2873
Wildwood 12:02:09 -35.0 Dark Up 74.6 272.3 Up 11:47:09 - 12:17:09 2778
CPSLO 12:02:20 -36.7 Dark Up 76.2 266.5 Up 11:47:20 - 12:17:20 2740

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 14YX49, (2018/12/20 12:03UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 14.83  56
PPM 074073     08:53:55.7 +35:32:18  6.1  2.37  70
PPM 074024     08:50:32.1 +33:17:05  6.7  0.16  69
14YX49         08:49:48.6 +33:19:25 16.0        69
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:07:24 UT

Marc W. Buie, Southwest Research Institute

RECON