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 05:09:39.3 +22:43:31
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 159 seconds.
The 1-sigma cross-track error in the shadow position is 1697 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 19.7 km RECON observability=1.0 and success probability=15.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 02:42:27 -24.6 Dark Up 34.9 94.8 Up 02:28:42 - 02:56:11 -1685
Tonasket 02:42:27 -24.6 Dark Up 34.9 94.6 Up 02:28:42 - 02:56:11 -1704
Okanogan 02:42:28 -24.5 Dark Down 34.8 94.3 Up 02:28:44 - 02:56:13 -1726
Brewster 02:42:29 -24.3 Dark Down 34.7 94.0 Up 02:28:45 - 02:56:14 -1742
Manson/Chelan 02:42:31 -24.0 Dark Down 34.5 93.5 Up 02:28:46 - 02:56:15 -1749
Entiat 02:42:31 -23.9 Dark Down 34.5 93.3 Up 02:28:47 - 02:56:16 -1764
Wenatchee 02:42:32 -23.8 Dark Down 34.4 93.1 Up 02:28:48 - 02:56:17 -1782
Ellensburg 02:42:34 -23.6 Dark Down 34.3 92.6 Up 02:28:49 - 02:56:18 -1809
Yakima 02:42:35 -23.5 Dark Down 34.3 92.4 Up 02:28:51 - 02:56:20 -1841
Toppenish/White Swan 02:42:35 -23.6 Dark Down 34.4 92.3 Up 02:28:51 - 02:56:20 -1864
Goldendale 02:42:38 -23.2 Dark Down 34.1 91.6 Up 02:28:53 - 02:56:22 -1896
The Dalles 02:42:39 -22.9 Dark Down 33.9 91.2 Up 02:28:54 - 02:56:23 -1904
Pasco 02:42:34 -24.5 Dark Down 35.3 93.2 Up 02:28:50 - 02:56:19 -1909
George/Umatilla 02:42:35 -24.3 Dark Down 35.2 92.8 Up 02:28:51 - 02:56:20 -1931
PNWRO 02:42:34 -24.6 Dark Down 35.5 93.2 Up 02:28:50 - 02:56:19 -1936
Maupin 02:42:40 -22.9 Dark Down 34.0 91.0 Up 02:28:56 - 02:56:25 -1942
Madras/Culver 02:42:42 -22.8 Dark Down 34.0 90.6 Up 02:28:57 - 02:56:26 -1985
Sisters 02:42:43 -22.4 Dark Down 33.7 90.1 Up 02:28:59 - 02:56:28 -2000
Redmond 02:42:43 -22.7 Dark Down 33.9 90.4 Up 02:28:58 - 02:56:27 -2014
Bend 02:42:44 -22.6 Dark Down 33.8 90.1 Up 02:28:59 - 02:56:28 -2027
Oregon Observatory 02:42:45 -22.5 Dark Down 33.7 89.9 Up 02:29:00 - 02:56:29 -2038
La Pine/Gilchrist 02:42:45 -22.4 Dark Down 33.7 89.7 Up 02:29:01 - 02:56:30 -2053
North Lake 02:42:45 -22.7 Dark Down 34.1 89.9 Up 02:29:01 - 02:56:30 -2108
Chiloquin 02:42:49 -21.9 Dark Down 33.4 88.8 Up 02:29:04 - 02:56:33 -2136
Paisley 02:42:47 -22.9 Dark Down 34.4 89.7 Up 02:29:02 - 02:56:31 -2165
Klamath Falls 02:42:50 -21.9 Dark Down 33.5 88.6 Up 02:29:05 - 02:56:34 -2167
Tulelake 02:42:50 -22.1 Dark Down 33.7 88.6 Up 02:29:05 - 02:56:34 -2200
Lakeview 02:42:48 -22.9 Dark Down 34.6 89.5 Up 02:29:03 - 02:56:32 -2214
Cedarville 02:42:49 -22.9 Dark Down 34.7 89.2 Up 02:29:05 - 02:56:34 -2276
Fall River/Burney 02:42:52 -21.9 Dark Down 33.8 88.1 Up 02:29:08 - 02:56:37 -2280
Susanville 02:42:53 -22.3 Dark Down 34.3 88.1 Up 02:29:09 - 02:56:38 -2358
Greenville 02:42:54 -22.1 Dark Down 34.1 87.8 Up 02:29:10 - 02:56:39 -2373
Gimple 02:42:54 -22.1 Dark Down 34.1 87.8 Up 02:29:10 - 02:56:39 -2375
Quincy 02:42:55 -22.0 Dark Down 34.1 87.6 Up 02:29:11 - 02:56:40 -2390
Portola 02:42:55 -22.4 Dark Down 34.4 87.8 Up 02:29:10 - 02:56:39 -2416
Reno 02:42:54 -22.8 Dark Down 34.9 88.1 Up 02:29:10 - 02:56:39 -2460
Carson City 02:42:55 -22.7 Dark Down 34.9 87.8 Up 02:29:11 - 02:56:40 -2493
Gardnerville 02:42:56 -22.7 Dark Down 35.0 87.7 Up 02:29:12 - 02:56:41 -2516
Yerington 02:42:55 -23.2 Dark Down 35.4 88.1 Up 02:29:10 - 02:56:39 -2530
Hawthorne 02:42:55 -23.5 Dark Down 35.8 88.1 Up 02:29:11 - 02:56:40 -2588
Lee Vining 02:42:57 -23.0 Dark Down 35.4 87.4 Up 02:29:13 - 02:56:42 -2624
Tonopah 02:42:54 -24.5 Dark Down 36.9 88.6 Up 02:29:10 - 02:56:39 -2675
Bishop 02:42:58 -23.4 Dark Down 36.0 87.4 Up 02:29:13 - 02:56:42 -2701
Lone Pine 02:42:59 -23.5 Dark Down 36.2 87.0 Up 02:29:15 - 02:56:44 -2781
Beatty 02:42:56 -24.6 Dark Down 37.2 88.0 Up 02:29:12 - 02:56:41 -2796
CPSLO 02:43:07 -21.2 Dark Down 34.0 84.7 Up 02:29:22 - 02:56:51 -2815
Niwot 02:42:25 -33.9 Dark Up 46.0 98.4 Up 02:28:41 - 02:56:10 -2840
Indian Springs 02:42:55 -25.4 Dark Down 38.1 88.3 Up 02:29:11 - 02:56:40 -2860
Henderson 02:42:55 -25.8 Dark Down 38.6 88.3 Up 02:29:11 - 02:56:40 -2932
Searchlight/Boulder City 02:42:56 -25.8 Dark Down 38.7 87.9 Up 02:29:12 - 02:56:41 -2988
Wildwood 02:43:06 -22.5 Dark Down 35.6 84.9 Up 02:29:22 - 02:56:51 -2996
Patrick 02:42:55 -26.6 Dark Down 39.5 88.4 Up 02:29:10 - 02:56:39 -3026
Laughlin/Bullhead City 02:42:56 -26.0 Dark Down 38.9 87.8 Up 02:29:12 - 02:56:41 -3027
Kingman/Dolan Springs 02:42:56 -26.4 Dark Down 39.4 88.1 Up 02:29:11 - 02:56:40 -3041
Mohave Valley 02:42:57 -25.9 Dark Down 38.9 87.6 Up 02:29:13 - 02:56:42 -3053
DCO 02:42:54 -27.1 Dark Down 40.1 88.6 Up 02:29:09 - 02:56:38 -3078
Idyllwild 02:43:04 -24.0 Dark Down 37.1 85.6 Up 02:29:19 - 02:56:48 -3093
Lake Havasu City 02:42:57 -26.1 Dark Down 39.1 87.4 Up 02:29:13 - 02:56:42 -3099
Parker 02:42:58 -26.0 Dark Down 39.1 87.2 Up 02:29:14 - 02:56:43 -3133
Blythe 02:43:00 -25.7 Dark Down 38.9 86.6 Up 02:29:15 - 02:56:44 -3173
Calipatria 02:43:03 -24.8 Dark Down 38.1 85.7 Up 02:29:19 - 02:56:48 -3190
Yuma 02:43:02 -25.4 Dark Down 38.8 85.8 Up 02:29:18 - 02:56:47 -3260

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 2017/12/05 19:08:27 UT

Marc W. Buie, Southwest Research Institute

RECON