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 08:50:53.2 +33:15:29
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 134 seconds.
The 1-sigma cross-track error in the shadow position is 1878 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 5.0 sigma about the mid-time.
The median site spacing is 15.9 km RECON observability=1.0 and success probability=8.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Niwot 12:02:00 -25.2 Dark Down 63.7 265.2 Up 11:50:18 - 12:13:42 4076
Oroville 12:03:12 -35.7 Dark Up 69.5 227.2 Up 11:51:30 - 12:14:54 3833
Tonasket 12:03:11 -35.7 Dark Up 69.6 227.6 Up 11:51:29 - 12:14:53 3817
Okanogan 12:03:10 -35.8 Dark Up 69.9 228.0 Up 11:51:28 - 12:14:52 3786
Brewster 12:03:09 -36.0 Dark Up 70.2 228.2 Up 11:51:27 - 12:14:51 3757
Manson/Chelan 12:03:10 -36.2 Dark Up 70.5 227.9 Up 11:51:28 - 12:14:52 3723
Entiat 12:03:08 -36.3 Dark Up 70.7 228.2 Up 11:51:26 - 12:14:50 3703
Wenatchee 12:03:08 -36.4 Dark Up 70.9 228.5 Up 11:51:26 - 12:14:50 3680
Pasco 12:03:01 -35.6 Dark Up 71.0 233.5 Up 11:51:19 - 12:14:43 3662
PNWRO 12:02:59 -35.5 Dark Up 71.1 234.5 Up 11:51:17 - 12:14:41 3657
Ellensburg 12:03:06 -36.6 Dark Up 71.3 229.0 Up 11:51:24 - 12:14:48 3639
George/Umatilla 12:02:59 -35.8 Dark Up 71.4 233.8 Up 11:51:17 - 12:14:41 3627
Yakima 12:03:06 -36.6 Dark Up 71.6 229.8 Up 11:51:24 - 12:14:48 3609
Toppenish/White Swan 12:03:04 -36.5 Dark Up 71.6 230.7 Up 11:51:22 - 12:14:46 3603
Goldendale 12:03:03 -36.8 Dark Up 72.2 231.1 Up 11:51:21 - 12:14:45 3540
The Dalles 12:03:03 -37.1 Dark Up 72.6 230.9 Up 11:51:21 - 12:14:45 3504
Maupin 12:03:02 -37.1 Dark Up 72.8 232.1 Up 11:51:20 - 12:14:44 3479
Madras/Culver 12:02:59 -37.1 Dark Up 73.1 233.5 Up 11:51:17 - 12:14:41 3437
Redmond 12:02:58 -37.2 Dark Up 73.4 234.3 Up 11:51:16 - 12:14:40 3408
Sisters 12:02:59 -37.5 Dark Up 73.6 233.4 Up 11:51:17 - 12:14:41 3387
Bend 12:02:57 -37.3 Dark Up 73.6 234.6 Up 11:51:15 - 12:14:39 3384
Oregon Observatory 12:02:56 -37.4 Dark Up 73.8 234.8 Up 11:51:14 - 12:14:38 3364
North Lake 12:02:53 -37.0 Dark Up 73.8 237.7 Up 11:51:11 - 12:14:35 3347
La Pine/Gilchrist 12:02:56 -37.4 Dark Up 73.9 235.2 Up 11:51:14 - 12:14:38 3345
Paisley 12:02:49 -36.8 Dark Up 73.9 240.0 Up 11:51:07 - 12:14:31 3326
Lakeview 12:02:47 -36.7 Dark Up 74.0 241.9 Up 11:51:05 - 12:14:29 3300
Cedarville 12:02:44 -36.5 Dark Up 74.2 244.3 Up 11:51:02 - 12:14:26 3261
Chiloquin 12:02:53 -37.8 Dark Up 74.8 237.8 Up 11:51:11 - 12:14:35 3242
DCO 12:01:56 -30.7 Dark Up 70.2 271.7 Up 11:50:14 - 12:13:38 3227
Klamath Falls 12:02:51 -37.7 Dark Up 74.9 239.0 Up 11:51:09 - 12:14:33 3221
Tulelake 12:02:49 -37.5 Dark Up 74.8 240.5 Up 11:51:07 - 12:14:31 3218
Patrick 12:02:00 -31.3 Dark Up 70.8 270.5 Up 11:50:18 - 12:13:42 3202
Tonopah 12:02:20 -34.2 Dark Up 73.2 259.7 Up 11:50:38 - 12:14:02 3182
Henderson 12:02:05 -32.3 Dark Up 71.7 268.0 Up 11:50:23 - 12:13:47 3175
Kingman/Dolan Springs 12:02:00 -31.4 Dark Up 70.9 271.0 Up 11:50:18 - 12:13:42 3174
Indian Springs 12:02:10 -32.9 Dark Up 72.2 265.8 Up 11:50:28 - 12:13:52 3170
Fall River/Burney 12:02:45 -37.5 Dark Up 75.2 243.6 Up 11:51:03 - 12:14:27 3154
Susanville 12:02:41 -36.9 Dark Up 75.0 247.1 Up 11:50:59 - 12:14:23 3150
Laughlin/Bullhead City 12:02:00 -31.8 Dark Up 71.3 270.8 Up 11:50:18 - 12:13:42 3138
Searchlight/Boulder City 12:02:02 -32.2 Dark Up 71.6 269.7 Up 11:50:20 - 12:13:44 3138
Reno 12:02:34 -36.3 Dark Up 74.7 251.4 Up 11:50:52 - 12:14:16 3134
Yerington 12:02:30 -35.7 Dark Up 74.4 254.3 Up 11:50:48 - 12:14:12 3132
Hawthorne 12:02:26 -35.3 Dark Up 74.1 256.5 Up 11:50:44 - 12:14:08 3129
Beatty 12:02:14 -33.8 Dark Up 73.0 263.9 Up 11:50:32 - 12:13:56 3125
Mohave Valley 12:01:59 -31.8 Dark Up 71.3 271.6 Up 11:50:17 - 12:13:41 3119
Gimple 12:02:39 -37.1 Dark Up 75.2 247.7 Up 11:50:57 - 12:14:21 3116
Portola 12:02:37 -36.8 Dark Up 75.1 249.5 Up 11:50:55 - 12:14:19 3115
Greenville 12:02:41 -37.1 Dark Up 75.3 247.5 Up 11:50:59 - 12:14:23 3111
Carson City 12:02:33 -36.2 Dark Up 74.8 252.7 Up 11:50:51 - 12:14:15 3108
Lake Havasu City 12:01:57 -31.6 Dark Up 71.1 272.9 Up 11:50:15 - 12:13:39 3106
Quincy 12:02:39 -37.1 Dark Up 75.4 248.2 Up 11:50:57 - 12:14:21 3096
Gardnerville 12:02:32 -36.2 Dark Up 74.9 253.6 Up 11:50:50 - 12:14:14 3093
Parker 12:01:55 -31.5 Dark Up 71.1 273.9 Up 11:50:13 - 12:13:37 3082
Lee Vining 12:02:25 -35.7 Dark Up 74.6 257.9 Up 11:50:43 - 12:14:07 3057
Bishop 12:02:21 -35.1 Dark Up 74.2 260.8 Up 11:50:39 - 12:14:03 3057
Blythe 12:01:54 -31.7 Dark Up 71.3 275.4 Up 11:50:12 - 12:13:36 3024
Lone Pine 12:02:16 -34.8 Dark Up 74.1 263.8 Up 11:50:34 - 12:13:58 3021
Yuma 12:01:50 -31.6 Dark Up 71.2 278.1 Up 11:50:08 - 12:13:32 2953
Calipatria 12:01:54 -32.4 Dark Up 72.0 276.6 Up 11:50:12 - 12:13:36 2925
Idyllwild 12:02:01 -33.4 Dark Up 73.0 274.3 Up 11:50:19 - 12:13:43 2893
Wildwood 12:02:08 -35.0 Dark Up 74.6 272.3 Up 11:50:26 - 12:13:50 2796
CPSLO 12:02:19 -36.7 Dark Up 76.3 266.4 Up 11:50:37 - 12:14:01 2758

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 2017/05/20 18:06:36 UT

Marc W. Buie, Southwest Research Institute

RECON