RECON: TNO occultation with 14YY49

Event between 14YY49 and star UC4-459-020767 with event index number of 142088

Geocentric closest approach at 2018/01/31 07:48:47 UTC

J2000 position of star is 06:39:03.6 +01:43:40
Equinox of date position of star is 06:39:57.8 +01:42:41
Stellar brightness R=16.0, use SENSEUP=128
Star is 34 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=22.7

[RECON map]
TNO is 17.8 AU from the Sun and 17.0 AU from the Earth.
The TNO is moving 19.4 km/sec on the sky relative to the star, or, 5.7 arcsec/hr.
The 1-sigma error in the time of the event is 83 seconds.
The 1-sigma cross-track error in the shadow position is 796 km.
The sky-plane scale is 12356.1 km/arcsec.

The TNO has an absolute magnitude Hv=10.1
Diameter=58.3 km assuming a 5% albedo -- 3.0 sec chord
Diameter=23.8 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 14YY49, (2018/01/31 07:49UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:09.1 +07:24:32  0.4 12.32  42
Alhena         06:38:45.4 +16:22:57  1.9 14.67  30
PPM 150940     06:39:34.5 +01:35:47  6.2  0.16  34
PPM 150952     06:39:50.9 +01:41:42  9.0  0.04  34
14YY49         06:40:00.0 +01:42:38 16.0        34
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 12.0 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 07:48:36 -58.1 Dark Up 36.9 216.5 Up 07:41:10 - 07:56:02 6833
Tonasket 07:48:35 -58.3 Dark Up 37.1 216.6 Up 07:41:09 - 07:56:01 6820
Okanogan 07:48:34 -58.6 Dark Up 37.4 216.6 Up 07:41:08 - 07:56:00 6798
Brewster 07:48:34 -58.9 Dark Up 37.7 216.5 Up 07:41:08 - 07:56:00 6777
Manson/Chelan 07:48:35 -59.0 Dark Up 38.0 216.2 Up 07:41:09 - 07:56:01 6756
Entiat 07:48:34 -59.2 Dark Up 38.2 216.2 Up 07:41:08 - 07:56:00 6741
Wenatchee 07:48:34 -59.5 Dark Up 38.5 216.2 Up 07:41:08 - 07:56:00 6724
Ellensburg 07:48:33 -59.8 Dark Up 38.9 216.1 Up 07:41:07 - 07:55:59 6694
Pasco 07:48:32 -60.8 Dark Up 38.9 218.1 Up 07:41:06 - 07:55:58 6687
PNWRO 07:48:32 -61.0 Dark Up 39.0 218.5 Up 07:41:06 - 07:55:58 6678
Yakima 07:48:33 -60.2 Dark Up 39.2 216.3 Up 07:41:07 - 07:55:59 6670
George/Umatilla 07:48:32 -61.1 Dark Up 39.2 218.0 Up 07:41:06 - 07:55:58 6661
Toppenish/White Swan 07:48:32 -60.5 Dark Up 39.3 216.6 Up 07:41:06 - 07:55:58 6661
Niwot 07:47:21 -66.1 Dark Up 35.7 236.1 Up 07:39:55 - 07:54:47 6658
Goldendale 07:48:32 -60.9 Dark Up 39.9 216.3 Up 07:41:06 - 07:55:58 6617
The Dalles 07:48:32 -61.1 Dark Up 40.3 216.0 Up 07:41:06 - 07:55:58 6593
Maupin 07:48:32 -61.5 Dark Up 40.6 216.4 Up 07:41:06 - 07:55:58 6570
Madras/Culver 07:48:32 -62.0 Dark Up 41.0 216.6 Up 07:41:06 - 07:55:58 6535
Redmond 07:48:32 -62.4 Dark Up 41.3 216.7 Up 07:41:06 - 07:55:58 6512
Sisters 07:48:32 -62.3 Dark Up 41.5 216.2 Up 07:41:06 - 07:55:58 6502
Bend 07:48:32 -62.6 Dark Up 41.6 216.7 Up 07:41:06 - 07:55:58 6495
Oregon Observatory 07:48:32 -62.7 Dark Up 41.8 216.6 Up 07:41:06 - 07:55:58 6480
La Pine/Gilchrist 07:48:32 -62.9 Dark Up 42.0 216.6 Up 07:41:06 - 07:55:58 6465
North Lake 07:48:32 -63.4 Dark Up 42.0 217.6 Up 07:41:06 - 07:55:58 6455
Paisley 07:48:32 -64.0 Dark Up 42.3 218.3 Up 07:41:06 - 07:55:58 6431
Lakeview 07:48:32 -64.6 Dark Up 42.6 218.9 Up 07:41:06 - 07:55:58 6405
Chiloquin 07:48:32 -63.9 Dark Up 43.0 216.8 Up 07:41:06 - 07:55:58 6384
Cedarville 07:48:32 -65.2 Dark Up 43.0 219.5 Up 07:41:06 - 07:55:58 6368
Klamath Falls 07:48:32 -64.2 Dark Up 43.2 217.1 Up 07:41:06 - 07:55:58 6364
Tulelake 07:48:32 -64.5 Dark Up 43.3 217.6 Up 07:41:06 - 07:55:58 6355
Fall River/Burney 07:48:32 -65.4 Dark Up 44.0 218.3 Up 07:41:06 - 07:55:58 6298
Susanville 07:48:12 -66.2 Dark Up 44.2 219.4 Up 07:40:46 - 07:55:38 6269
Gimple 07:48:12 -66.4 Dark Up 44.5 219.4 Up 07:40:46 - 07:55:38 6244
Greenville 07:48:12 -66.4 Dark Up 44.5 219.3 Up 07:40:46 - 07:55:38 6242
Portola 07:48:10 -66.8 Dark Up 44.6 220.0 Up 07:40:44 - 07:55:36 6233
Reno 07:48:07 -67.2 Dark Up 44.4 221.0 Up 07:40:41 - 07:55:33 6233
Quincy 07:48:12 -66.6 Dark Up 44.7 219.4 Up 07:40:46 - 07:55:38 6228
Yerington 07:48:03 -67.8 Dark Up 44.5 222.1 Up 07:40:37 - 07:55:29 6213
Carson City 07:48:05 -67.5 Dark Up 44.7 221.2 Up 07:40:39 - 07:55:31 6208
Tonopah 07:47:53 -69.1 Dark Up 44.2 225.0 Up 07:40:27 - 07:55:19 6202
Hawthorne 07:48:00 -68.4 Dark Up 44.6 223.0 Up 07:40:34 - 07:55:26 6195
Gardnerville 07:48:05 -67.8 Dark Up 44.9 221.4 Up 07:40:39 - 07:55:31 6192
Lee Vining 07:48:00 -68.9 Dark Up 45.3 222.8 Up 07:40:34 - 07:55:26 6141
Indian Springs 07:47:42 -70.7 Dark Up 44.3 227.7 Up 07:40:16 - 07:55:08 6139
Beatty 07:47:48 -70.3 Dark Up 44.7 226.3 Up 07:40:22 - 07:55:14 6132
Henderson 07:47:38 -71.3 Dark Up 44.3 228.9 Up 07:40:12 - 07:55:04 6120
Bishop 07:47:54 -69.6 Dark Up 45.3 224.1 Up 07:40:28 - 07:55:20 6119
Patrick 07:47:32 -71.9 Dark Up 44.0 230.5 Up 07:40:06 - 07:54:58 6107
DCO 07:47:28 -72.3 Dark Up 43.8 231.5 Up 07:40:02 - 07:54:54 6105
Kingman/Dolan Springs 07:47:32 -72.2 Dark Up 44.3 230.5 Up 07:40:06 - 07:54:58 6085
Searchlight/Boulder City 07:47:36 -71.9 Dark Up 44.6 229.4 Up 07:40:10 - 07:55:02 6080
Lone Pine 07:47:51 -70.4 Dark Up 45.7 225.0 Up 07:40:25 - 07:55:17 6073
Laughlin/Bullhead City 07:47:33 -72.2 Dark Up 44.6 230.0 Up 07:40:07 - 07:54:59 6068
Mohave Valley 07:47:32 -72.4 Dark Up 44.8 230.2 Up 07:40:06 - 07:54:58 6048
Lake Havasu City 07:47:31 -72.9 Dark Up 44.9 230.7 Up 07:40:05 - 07:54:57 6025
Parker 07:47:29 -73.2 Dark Up 45.1 231.0 Up 07:40:03 - 07:54:55 6000
Blythe 07:47:28 -73.7 Dark Up 45.6 231.1 Up 07:40:02 - 07:54:54 5952
Idyllwild 07:47:37 -73.4 Dark Up 46.9 228.7 Up 07:40:11 - 07:55:03 5899
CPSLO 07:47:57 -71.0 Dark Up 48.1 222.9 Up 07:40:31 - 07:55:23 5899
Calipatria 07:47:30 -74.1 Dark Up 46.5 230.5 Up 07:40:04 - 07:54:56 5886
Yuma 07:47:25 -74.6 Dark Up 46.2 231.8 Up 07:39:59 - 07:54:51 5880
Wildwood 07:47:45 -72.7 Dark Up 47.8 226.2 Up 07:40:19 - 07:55:11 5869

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 14YY49, (2018/01/31 07:49UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 12.32  42
Alhena         06:37:42.8 +16:23:57  1.9 14.67  30
PPM 150940     06:38:38.2 +01:36:48  6.2  0.16  34
PPM 150952     06:38:54.5 +01:42:44  9.0  0.04  34
14YY49         06:39:03.6 +01:43:40 16.0        34
Positions are for J2000

Event circumstances last updated at 2017/05/17 18:00:20 UT

Marc W. Buie, Southwest Research Institute

RECON