RECON: TNO occultation with 14QY441

Event between 14QY441 and star UC4-564-014043 with event index number of 173440

Geocentric closest approach at 2018/12/25 02:40:02 UTC

J2000 position of star is 05:08:34.4 +22:42:12
Equinox of date position of star is 05:09:37.3 +22:43:29
Stellar brightness R=16.5, use SENSEUP=128
Star is 48 degrees from the moon. Moon is 92% illuminated.
TNO apparent brightness V=21.4

[RECON map]
TNO is 37.7 AU from the Sun and 36.8 AU from the Earth.
The TNO is moving 24.6 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 126 seconds.
The 1-sigma cross-track error in the shadow position is 1554 km.
The sky-plane scale is 26657.1 km/arcsec.

The TNO has an absolute magnitude Hv=5.6
Diameter=457.1 km assuming a 5% albedo -- 18.6 sec chord
Diameter=186.6 km assuming a 30% albedo -- 7.6 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 

Star training set for 14QY441, (2018/12/25 02:40UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.7 +16:32:46  0.8  9.87  56
Alnath         05:27:29.6 +28:37:18  1.6  7.13  44
PPM 094053     05:06:46.6 +23:05:08  6.5  0.77  48
PPM 094066     05:07:49.5 +22:32:05  7.0  0.48  48
PPM 094092     05:09:25.3 +22:15:38  9.3  0.47  48
PPM 094104     05:10:11.8 +22:54:33 11.0  0.21  48
14QY441        05:09:43.1 +22:43:36 16.5        48
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 21.4 km RECON observability=1.0 and success probability=15.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 02:42:26 -24.6 Dark Up 34.9 94.8 Up 02:31:26 - 02:53:25 -1693
Tonasket 02:42:27 -24.6 Dark Up 34.9 94.6 Up 02:31:27 - 02:53:26 -1711
Okanogan 02:42:28 -24.5 Dark Down 34.8 94.3 Up 02:31:28 - 02:53:27 -1734
Brewster 02:42:29 -24.3 Dark Down 34.7 94.0 Up 02:31:30 - 02:53:29 -1750
Manson/Chelan 02:42:30 -24.0 Dark Down 34.5 93.5 Up 02:31:31 - 02:53:30 -1756
Entiat 02:42:31 -23.9 Dark Down 34.5 93.3 Up 02:31:31 - 02:53:30 -1772
Wenatchee 02:42:32 -23.8 Dark Down 34.4 93.1 Up 02:31:32 - 02:53:31 -1790
Ellensburg 02:42:33 -23.6 Dark Down 34.3 92.6 Up 02:31:34 - 02:53:33 -1817
Yakima 02:42:35 -23.5 Dark Down 34.3 92.4 Up 02:31:35 - 02:53:34 -1849
Toppenish/White Swan 02:42:35 -23.6 Dark Down 34.4 92.3 Up 02:31:36 - 02:53:35 -1871
Goldendale 02:42:38 -23.2 Dark Down 34.1 91.6 Up 02:31:38 - 02:53:37 -1904
The Dalles 02:42:39 -22.9 Dark Down 33.9 91.2 Up 02:31:39 - 02:53:38 -1912
Pasco 02:42:34 -24.5 Dark Down 35.3 93.2 Up 02:31:34 - 02:53:33 -1917
George/Umatilla 02:42:35 -24.3 Dark Down 35.2 92.8 Up 02:31:36 - 02:53:35 -1939
PNWRO 02:42:34 -24.6 Dark Down 35.5 93.2 Up 02:31:35 - 02:53:34 -1944
Maupin 02:42:40 -22.9 Dark Down 34.0 91.0 Up 02:31:40 - 02:53:39 -1950
Madras/Culver 02:42:42 -22.8 Dark Down 34.0 90.6 Up 02:31:42 - 02:53:41 -1993
Sisters 02:42:43 -22.4 Dark Down 33.7 90.1 Up 02:31:44 - 02:53:43 -2008
Redmond 02:42:43 -22.7 Dark Down 33.9 90.4 Up 02:31:43 - 02:53:42 -2021
Bend 02:42:44 -22.6 Dark Down 33.8 90.1 Up 02:31:44 - 02:53:43 -2035
Oregon Observatory 02:42:44 -22.5 Dark Down 33.7 89.9 Up 02:31:45 - 02:53:44 -2046
La Pine/Gilchrist 02:42:45 -22.4 Dark Down 33.7 89.7 Up 02:31:46 - 02:53:45 -2061
North Lake 02:42:45 -22.7 Dark Down 34.1 89.9 Up 02:31:46 - 02:53:45 -2115
Chiloquin 02:42:49 -21.9 Dark Down 33.4 88.8 Up 02:31:49 - 02:53:48 -2144
Paisley 02:42:46 -22.9 Dark Down 34.4 89.7 Up 02:31:47 - 02:53:46 -2173
Klamath Falls 02:42:50 -21.9 Dark Down 33.5 88.6 Up 02:31:50 - 02:53:49 -2175
Tulelake 02:42:50 -22.1 Dark Down 33.7 88.6 Up 02:31:50 - 02:53:49 -2208
Lakeview 02:42:48 -22.9 Dark Down 34.6 89.5 Up 02:31:48 - 02:53:47 -2222
Cedarville 02:42:49 -22.9 Dark Down 34.7 89.2 Up 02:31:49 - 02:53:48 -2284
Fall River/Burney 02:42:52 -21.9 Dark Down 33.8 88.1 Up 02:31:53 - 02:53:52 -2288
Susanville 02:42:53 -22.3 Dark Down 34.3 88.1 Up 02:31:53 - 02:53:52 -2366
Greenville 02:42:54 -22.1 Dark Down 34.1 87.8 Up 02:31:54 - 02:53:53 -2381
Gimple 02:42:54 -22.1 Dark Down 34.1 87.8 Up 02:31:54 - 02:53:53 -2384
Quincy 02:42:54 -22.0 Dark Down 34.1 87.6 Up 02:31:55 - 02:53:54 -2399
Portola 02:42:54 -22.4 Dark Down 34.4 87.8 Up 02:31:54 - 02:53:53 -2425
Reno 02:42:53 -22.8 Dark Down 34.9 88.0 Up 02:31:54 - 02:53:53 -2469
Carson City 02:42:55 -22.7 Dark Down 34.9 87.8 Up 02:31:56 - 02:53:55 -2501
Gardnerville 02:42:55 -22.7 Dark Down 35.0 87.7 Up 02:31:56 - 02:53:55 -2524
Yerington 02:42:54 -23.2 Dark Down 35.4 88.1 Up 02:31:55 - 02:53:54 -2538
Hawthorne 02:42:54 -23.5 Dark Down 35.8 88.1 Up 02:31:55 - 02:53:54 -2597
Lee Vining 02:42:57 -23.0 Dark Down 35.4 87.4 Up 02:31:57 - 02:53:56 -2632
Tonopah 02:42:53 -24.5 Dark Down 36.9 88.6 Up 02:31:54 - 02:53:53 -2683
Bishop 02:42:57 -23.4 Dark Down 36.0 87.4 Up 02:31:57 - 02:53:56 -2710
Lone Pine 02:42:59 -23.5 Dark Down 36.2 87.0 Up 02:31:59 - 02:53:58 -2790
Beatty 02:42:55 -24.6 Dark Down 37.2 88.0 Up 02:31:56 - 02:53:55 -2804
CPSLO 02:43:06 -21.2 Dark Down 34.0 84.7 Up 02:32:07 - 02:54:06 -2824
Niwot 02:42:25 -33.9 Dark Up 46.0 98.4 Up 02:31:25 - 02:53:24 -2847
Indian Springs 02:42:54 -25.4 Dark Down 38.1 88.3 Up 02:31:55 - 02:53:54 -2869
Henderson 02:42:54 -25.8 Dark Down 38.6 88.3 Up 02:31:55 - 02:53:54 -2941
Searchlight/Boulder City 02:42:56 -25.8 Dark Down 38.7 87.9 Up 02:31:56 - 02:53:55 -2996
Wildwood 02:43:06 -22.5 Dark Down 35.6 84.9 Up 02:32:06 - 02:54:05 -3005
Patrick 02:42:53 -26.6 Dark Down 39.5 88.4 Up 02:31:54 - 02:53:53 -3035
Laughlin/Bullhead City 02:42:56 -26.0 Dark Down 38.9 87.8 Up 02:31:56 - 02:53:55 -3036
Kingman/Dolan Springs 02:42:54 -26.4 Dark Down 39.4 88.1 Up 02:31:55 - 02:53:54 -3050
Mohave Valley 02:42:56 -25.9 Dark Down 38.9 87.6 Up 02:31:57 - 02:53:56 -3062
DCO 02:42:53 -27.1 Dark Down 40.1 88.6 Up 02:31:54 - 02:53:53 -3086
Idyllwild 02:43:03 -24.0 Dark Down 37.1 85.6 Up 02:32:04 - 02:54:03 -3101
Lake Havasu City 02:42:56 -26.1 Dark Down 39.1 87.4 Up 02:31:57 - 02:53:56 -3108
Parker 02:42:57 -26.0 Dark Down 39.1 87.2 Up 02:31:57 - 02:53:56 -3142
Blythe 02:42:59 -25.7 Dark Down 38.9 86.6 Up 02:32:00 - 02:53:59 -3182
Calipatria 02:43:02 -24.8 Dark Down 38.1 85.7 Up 02:32:03 - 02:54:02 -3199
Yuma 02:43:01 -25.4 Dark Down 38.8 85.8 Up 02:32:02 - 02:54:01 -3270

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 14QY441, (2018/12/25 02:40UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  9.87  56
Alnath         05:26:17.5 +28:36:24  1.6  7.13  44
PPM 094053     05:05:37.7 +23:03:40  6.5  0.77  48
PPM 094066     05:06:40.9 +22:30:38  7.0  0.48  48
PPM 094092     05:08:16.8 +22:14:14  9.3  0.47  48
PPM 094104     05:09:02.9 +22:53:10 11.0  0.21  48
14QY441        05:08:34.4 +22:42:12 16.5        48
Positions are for J2000

Event circumstances last updated at 2017/05/20 18:07:09 UT

Marc W. Buie, Southwest Research Institute

RECON