RECON: TNO occultation with 14QY441

Event between 14QY441 and star GA1120:00984447 with event index number of 173440

Geocentric closest approach at 2018/12/25 02:45:22 UTC

J2000 position of star is 05:08:34.4 +22:42:12
Equinox of date position of star is 05:09:42.4 +22:43:35
Stellar brightness G=16.4, use SENSEUP=128
Star is 48 degrees from the moon. Moon is 92% illuminated.
TNO apparent brightness V=21.5

[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 92 seconds.
The 1-sigma cross-track error in the shadow position is 1435 km.
The sky-plane scale is 26657.1 km/arcsec.

The TNO has an absolute magnitude Hv=5.7
Diameter=430.5 km assuming a 5% albedo -- 17.5 sec chord
Diameter=175.8 km assuming a 30% albedo -- 7.1 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 

Star training set for 14QY441, (2018/12/25 02:45UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.7 +16:32:45  0.8  9.87  57
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  49
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 16.4        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 18.6 km RECON observability=1.0 and success probability=11.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 02:47:41 -25.4 Dark Up 35.4 96.3 Up 02:39:29 - 02:55:53 -2199
Kelowna 02:47:40 -25.6 Dark Up 35.7 96.6 Up 02:39:28 - 02:55:52 -2205
Penticton 02:47:42 -25.5 Dark Up 35.6 96.2 Up 02:39:30 - 02:55:54 -2229
Okanagan Falls 02:47:43 -25.4 Dark Up 35.6 96.0 Up 02:39:31 - 02:55:55 -2243
Oliver 02:47:43 -25.4 Dark Up 35.6 95.9 Up 02:39:31 - 02:55:55 -2257
Anarchist Mountain Observatory 02:47:43 -25.5 Dark Up 35.8 96.0 Up 02:39:31 - 02:55:55 -2276
Oroville 02:47:43 -25.5 Dark Up 35.7 95.9 Up 02:39:31 - 02:55:55 -2280
Tonasket 02:47:44 -25.5 Dark Up 35.8 95.7 Up 02:39:32 - 02:55:56 -2298
Okanogan 02:47:46 -25.3 Dark Up 35.7 95.3 Up 02:39:34 - 02:55:58 -2321
Brewster 02:47:46 -25.2 Dark Up 35.6 95.0 Up 02:39:34 - 02:55:58 -2337
Manson/Chelan 02:47:48 -24.9 Dark Down 35.4 94.6 Up 02:39:36 - 02:56:00 -2344
Entiat 02:47:49 -24.8 Dark Down 35.3 94.4 Up 02:39:37 - 02:56:01 -2360
Wenatchee 02:47:50 -24.7 Dark Down 35.3 94.1 Up 02:39:38 - 02:56:02 -2378
Ellensburg 02:47:51 -24.5 Dark Down 35.2 93.6 Up 02:39:39 - 02:56:03 -2405
Yakima 02:47:52 -24.4 Dark Down 35.2 93.3 Up 02:39:40 - 02:56:04 -2438
Toppenish/White Swan 02:47:53 -24.5 Dark Down 35.3 93.3 Up 02:39:41 - 02:56:05 -2460
Goldendale 02:47:55 -24.1 Dark Down 35.1 92.6 Up 02:39:43 - 02:56:07 -2493
The Dalles 02:47:56 -23.9 Dark Down 34.8 92.2 Up 02:39:44 - 02:56:08 -2501
Pasco 02:47:51 -25.4 Dark Down 36.2 94.2 Up 02:39:39 - 02:56:03 -2505
George/Umatilla 02:47:53 -25.2 Dark Down 36.1 93.8 Up 02:39:41 - 02:56:05 -2527
PNWRO 02:47:52 -25.5 Dark Down 36.4 94.2 Up 02:39:40 - 02:56:04 -2532
Maupin 02:47:57 -23.9 Dark Down 34.9 92.0 Up 02:39:45 - 02:56:09 -2539
Madras/Culver 02:47:59 -23.7 Dark Down 34.9 91.6 Up 02:39:47 - 02:56:11 -2583
Sisters 02:48:01 -23.4 Dark Down 34.6 91.0 Up 02:39:49 - 02:56:13 -2598
Redmond 02:48:00 -23.6 Dark Down 34.9 91.3 Up 02:39:48 - 02:56:12 -2612
Bend 02:48:01 -23.5 Dark Down 34.8 91.1 Up 02:39:49 - 02:56:13 -2625
Oregon Observatory 02:48:02 -23.4 Dark Down 34.7 90.8 Up 02:39:50 - 02:56:14 -2636
La Pine/Gilchrist 02:48:02 -23.3 Dark Down 34.7 90.7 Up 02:39:50 - 02:56:14 -2652
North Lake 02:48:03 -23.7 Dark Down 35.1 90.8 Up 02:39:51 - 02:56:15 -2706
Chiloquin 02:48:06 -22.9 Dark Down 34.4 89.7 Up 02:39:54 - 02:56:18 -2735
Paisley 02:48:04 -23.8 Dark Down 35.4 90.6 Up 02:39:52 - 02:56:16 -2764
Klamath Falls 02:48:07 -22.8 Dark Down 34.5 89.5 Up 02:39:55 - 02:56:19 -2767
Tulelake 02:48:07 -23.0 Dark Down 34.7 89.5 Up 02:39:55 - 02:56:19 -2799
Lakeview 02:48:05 -23.9 Dark Down 35.5 90.4 Up 02:39:53 - 02:56:17 -2813
Cedarville 02:48:07 -23.9 Dark Down 35.7 90.1 Up 02:39:55 - 02:56:19 -2875
Fall River/Burney 02:48:10 -22.9 Dark Down 34.8 88.9 Up 02:39:58 - 02:56:22 -2880
Susanville 02:48:10 -23.3 Dark Down 35.3 89.0 Up 02:39:58 - 02:56:22 -2958
Greenville 02:48:12 -23.1 Dark Down 35.1 88.6 Up 02:40:00 - 02:56:24 -2973
Gimple 02:48:12 -23.1 Dark Down 35.1 88.6 Up 02:40:00 - 02:56:24 -2976
Quincy 02:48:12 -23.0 Dark Down 35.1 88.4 Up 02:40:00 - 02:56:24 -2991
Portola 02:48:12 -23.3 Dark Down 35.4 88.7 Up 02:40:00 - 02:56:24 -3017
Reno 02:48:12 -23.8 Dark Down 35.9 88.9 Up 02:40:00 - 02:56:24 -3061
Carson City 02:48:12 -23.7 Dark Down 36.0 88.6 Up 02:40:00 - 02:56:24 -3094
Gardnerville 02:48:13 -23.7 Dark Down 36.0 88.5 Up 02:40:01 - 02:56:25 -3117
Yerington 02:48:12 -24.2 Dark Down 36.4 88.9 Up 02:40:00 - 02:56:24 -3131
Hawthorne 02:48:12 -24.5 Dark Down 36.8 88.9 Up 02:40:00 - 02:56:24 -3189
Lee Vining 02:48:15 -24.0 Dark Down 36.5 88.1 Up 02:40:03 - 02:56:27 -3225
Tonopah 02:48:11 -25.5 Dark Down 37.9 89.4 Up 02:39:59 - 02:56:23 -3276
Bishop 02:48:15 -24.4 Dark Down 37.0 88.1 Up 02:40:03 - 02:56:27 -3302
Lone Pine 02:48:16 -24.6 Dark Down 37.3 87.8 Up 02:40:04 - 02:56:28 -3383
Beatty 02:48:13 -25.6 Dark Down 38.3 88.7 Up 02:40:01 - 02:56:25 -3397
CPSLO 02:48:24 -22.2 Dark Down 35.1 85.4 Up 02:40:12 - 02:56:36 -3418
Niwot 02:47:41 -34.9 Dark Up 47.0 99.4 Up 02:39:29 - 02:55:53 -3435
Indian Springs 02:48:12 -26.4 Dark Down 39.2 89.1 Up 02:40:00 - 02:56:24 -3461
Henderson 02:48:12 -26.9 Dark Down 39.7 89.1 Up 02:40:00 - 02:56:24 -3533
Searchlight/Boulder City 02:48:12 -26.8 Dark Down 39.7 88.6 Up 02:40:00 - 02:56:24 -3589
Wildwood 02:48:23 -23.6 Dark Down 36.7 85.6 Up 02:40:11 - 02:56:35 -3599
Patrick 02:48:11 -27.6 Dark Down 40.6 89.2 Up 02:39:59 - 02:56:23 -3627
Laughlin/Bullhead City 02:48:13 -27.0 Dark Down 40.0 88.6 Up 02:40:01 - 02:56:25 -3628
Kingman/Dolan Springs 02:48:12 -27.5 Dark Down 40.4 88.9 Up 02:40:00 - 02:56:24 -3642
Mohave Valley 02:48:14 -27.0 Dark Down 40.0 88.4 Up 02:40:02 - 02:56:26 -3654
DCO 02:48:10 -28.2 Dark Down 41.2 89.3 Up 02:39:58 - 02:56:22 -3679
Idyllwild 02:48:20 -25.0 Dark Down 38.2 86.3 Up 02:40:08 - 02:56:32 -3695
Lake Havasu City 02:48:14 -27.1 Dark Down 40.2 88.2 Up 02:40:02 - 02:56:26 -3700
Parker 02:48:15 -27.1 Dark Down 40.2 87.9 Up 02:40:03 - 02:56:27 -3735
Blythe 02:48:16 -26.7 Dark Down 40.0 87.3 Up 02:40:04 - 02:56:28 -3775
Calipatria 02:48:19 -25.9 Dark Down 39.2 86.4 Up 02:40:07 - 02:56:31 -3792
Yuma 02:48:19 -26.5 Dark Down 39.9 86.5 Up 02:40:07 - 02:56:31 -3863

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 02:45UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  9.87  57
Alnath         05:26:17.5 +28:36:23  1.6  7.13  44
PPM 094053     05:05:37.7 +23:03:40  6.5  0.77  49
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 16.4        48
Positions are for J2000

Event circumstances last updated at 2018/10/18 02:18:11 UT

Marc W. Buie, Southwest Research Institute

RECON