RECON: TNO occultation with 535168

Event between (535168) 14XU40 and star GA1120:01005917 with event index number of 1617567

Geocentric closest approach at 2019/12/15 03:04:01 UTC

J2000 position of star is 05:10:35.3 +22:55:18
Equinox of date position of star is 05:11:46.1 +22:56:41
Stellar brightness G=16.8, use SENSEUP=128
Star is 41 degrees from the moon. Moon is 90% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 34.2 AU from the Sun and 33.2 AU from the Earth.
The TNO is moving 24.8 km/sec on the sky relative to the star, or, 3.7 arcsec/hr.
The 1-sigma error in the time of the event is 128 seconds.
The 1-sigma cross-track error in the shadow position is 1237 km.
The sky-plane scale is 24087.0 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 9.2 sec chord
Diameter=93.5 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 535168, (2019/12/15 03:04UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.1 +16:32:52  0.8 10.37  50
Alnath         05:27:33.3 +28:37:21  1.6  6.69  37
PPM 094053     05:06:50.1 +23:05:13  6.5  1.15  42
PPM 094158     05:12:32.2 +22:23:09  8.4  0.58  41
PPM 094152     05:12:23.8 +23:05:15  8.7  0.20  41
535168         05:11:47.7 +22:56:43 16.8        41
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=7.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 03:06:18 -29.3 Dark Up 32.0 91.7 Up 02:55:07 - 03:17:30 3888
Summerland 03:06:20 -29.1 Dark Up 31.8 91.3 Up 02:55:08 - 03:17:31 3875
Penticton 03:06:20 -29.2 Dark Up 31.9 91.3 Up 02:55:08 - 03:17:31 3867
Okanagan Falls 03:06:20 -29.2 Dark Up 31.9 91.2 Up 02:55:09 - 03:17:32 3854
Oliver 03:06:21 -29.2 Dark Up 31.9 91.1 Up 02:55:10 - 03:17:33 3842
Anarchist Mountain Observatory 03:06:21 -29.3 Dark Up 32.1 91.1 Up 02:55:10 - 03:17:33 3824
Oroville 03:06:22 -29.3 Dark Up 32.0 91.0 Up 02:55:11 - 03:17:34 3821
Tonasket 03:06:23 -29.2 Dark Up 32.0 90.9 Up 02:55:11 - 03:17:34 3804
Okanogan 03:06:24 -29.1 Dark Up 31.9 90.6 Up 02:55:12 - 03:17:35 3784
Brewster 03:06:25 -29.0 Dark Up 31.8 90.3 Up 02:55:13 - 03:17:36 3770
Manson/Chelan 03:06:26 -28.7 Dark Up 31.6 89.9 Up 02:55:14 - 03:17:37 3765
Wenatchee 03:06:28 -28.6 Dark Up 31.4 89.5 Up 02:55:16 - 03:17:39 3736
Ellensburg 03:06:29 -28.4 Dark Up 31.3 89.0 Up 02:55:18 - 03:17:41 3712
Yakima 03:06:31 -28.4 Dark Up 31.3 88.8 Up 02:55:19 - 03:17:42 3682
Toppenish/White Swan 03:06:31 -28.5 Dark Up 31.4 88.8 Up 02:55:20 - 03:17:43 3661
Goldendale 03:06:33 -28.1 Dark Up 31.1 88.2 Up 02:55:22 - 03:17:45 3633
The Dalles 03:06:35 -27.9 Dark Up 30.8 87.8 Up 02:55:23 - 03:17:46 3627
Pasco 03:06:31 -29.3 Dark Up 32.3 89.6 Up 02:55:19 - 03:17:42 3613
George/Umatilla 03:06:31 -29.2 Dark Up 32.1 89.3 Up 02:55:20 - 03:17:43 3594
Maupin 03:06:36 -27.9 Dark Up 30.9 87.6 Up 02:55:25 - 03:17:48 3592
PNWRO 03:06:31 -29.5 Dark Up 32.4 89.6 Up 02:55:19 - 03:17:42 3587
Madras/Culver 03:06:37 -27.8 Dark Up 30.8 87.2 Up 02:55:26 - 03:17:49 3552
Sisters 03:06:39 -27.5 Dark Down 30.5 86.7 Up 02:55:28 - 03:17:51 3540
Redmond 03:06:39 -27.7 Dark Up 30.8 87.0 Up 02:55:27 - 03:17:50 3526
Bend 03:06:40 -27.6 Dark Down 30.7 86.8 Up 02:55:28 - 03:17:51 3514
Oregon Observatory 03:06:41 -27.5 Dark Down 30.6 86.6 Up 02:55:29 - 03:17:52 3505
La Pine/Gilchrist 03:06:41 -27.4 Dark Down 30.5 86.4 Up 02:55:30 - 03:17:53 3491
North Lake 03:06:42 -27.8 Dark Down 30.9 86.6 Up 02:55:31 - 03:17:54 3438
Chiloquin 03:06:45 -27.1 Dark Down 30.2 85.6 Up 02:55:33 - 03:17:56 3416
Klamath Falls 03:06:46 -27.1 Dark Down 30.2 85.4 Up 02:55:35 - 03:17:58 3386
Paisley 03:06:43 -28.0 Dark Down 31.2 86.5 Up 02:55:32 - 03:17:55 3383
Tulelake 03:06:46 -27.3 Dark Down 30.4 85.5 Up 02:55:35 - 03:17:58 3355
Lakeview 03:06:45 -28.1 Dark Down 31.3 86.3 Up 02:55:33 - 03:17:56 3336
Fall River/Burney 03:06:49 -27.2 Dark Down 30.4 85.0 Up 02:55:38 - 03:18:01 3280
Cedarville 03:06:47 -28.2 Dark Down 31.4 86.0 Up 02:55:35 - 03:17:58 3278
Susanville 03:06:50 -27.7 Dark Down 30.9 85.1 Up 02:55:39 - 03:18:02 3204
Greenville 03:06:52 -27.4 Dark Down 30.7 84.7 Up 02:55:40 - 03:18:03 3191
Gimple 03:06:51 -27.5 Dark Down 30.8 84.8 Up 02:55:40 - 03:18:03 3188
Quincy 03:06:53 -27.4 Dark Down 30.7 84.6 Up 02:55:41 - 03:18:04 3174
Portola 03:06:52 -27.7 Dark Down 31.0 84.8 Up 02:55:40 - 03:18:03 3148
Reno 03:06:52 -28.2 Dark Down 31.5 85.0 Up 02:55:41 - 03:18:04 3104
Carson City 03:06:53 -28.2 Dark Down 31.5 84.8 Up 02:55:42 - 03:18:05 3073
Gardnerville 03:06:54 -28.2 Dark Down 31.5 84.7 Up 02:55:42 - 03:18:05 3051
Yerington 03:06:53 -28.6 Dark Down 32.0 85.1 Up 02:55:41 - 03:18:04 3035
Hawthorne 03:06:54 -29.0 Dark Down 32.3 85.1 Up 02:55:42 - 03:18:05 2978
Lee Vining 03:06:56 -28.5 Dark Down 31.9 84.5 Up 02:55:44 - 03:18:07 2947
Tonopah 03:06:53 -30.0 Dark Down 33.4 85.6 Up 02:55:42 - 03:18:05 2890
Bishop 03:06:57 -29.0 Dark Down 32.4 84.5 Up 02:55:45 - 03:18:08 2871
Lone Pine 03:06:58 -29.2 Dark Down 32.6 84.2 Up 02:55:47 - 03:18:10 2794
CPSLO 03:07:05 -26.9 Dark Down 30.4 82.1 Up 02:55:54 - 03:18:17 2775
Beatty 03:06:55 -30.2 Dark Down 33.7 85.1 Up 02:55:44 - 03:18:07 2774
Indian Springs 03:06:55 -31.1 Dark Down 34.5 85.5 Up 02:55:43 - 03:18:06 2708
SwRI 03:06:28 -39.3 Dark Up 42.6 94.6 Up 02:55:16 - 03:17:39 2665
Henderson 03:06:55 -31.5 Dark Up 35.0 85.5 Up 02:55:44 - 03:18:07 2637
Wildwood 03:07:06 -28.4 Dark Down 31.9 82.4 Up 02:55:54 - 03:18:17 2594
Searchlight/Boulder City 03:06:57 -31.5 Dark Up 35.0 85.2 Up 02:55:45 - 03:18:08 2584
Laughlin/Bullhead City 03:06:57 -31.8 Dark Up 35.3 85.1 Up 02:55:45 - 03:18:08 2545
Patrick 03:06:55 -32.4 Dark Up 35.9 85.7 Up 02:55:43 - 03:18:06 2542
Kingman/Dolan Springs 03:06:57 -32.2 Dark Up 35.7 85.4 Up 02:55:45 - 03:18:08 2529
Mohave Valley 03:06:58 -31.7 Dark Up 35.3 84.9 Up 02:55:46 - 03:18:09 2521
Idyllwild 03:07:04 -29.8 Dark Down 33.4 83.1 Up 02:55:53 - 03:18:16 2493
Lake Havasu City 03:06:59 -31.9 Dark Up 35.5 84.8 Up 02:55:47 - 03:18:10 2476
Parker 03:06:59 -31.9 Dark Down 35.5 84.6 Up 02:55:48 - 03:18:11 2443
Blythe 03:07:01 -31.6 Dark Down 35.2 84.0 Up 02:55:49 - 03:18:12 2406
Calipatria 03:07:04 -30.7 Dark Down 34.3 83.3 Up 02:55:52 - 03:18:15 2395
Yuma 03:07:04 -31.4 Dark Down 35.0 83.4 Up 02:55:52 - 03:18:15 2324

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 535168, (2019/12/15 03:04UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 10.37  50
Alnath         05:26:17.5 +28:36:23  1.6  6.69  37
PPM 094053     05:05:37.7 +23:03:40  6.5  1.15  42
PPM 094158     05:11:20.1 +22:21:45  8.4  0.58  41
PPM 094152     05:11:11.4 +23:03:51  8.7  0.20  41
535168         05:10:35.3 +22:55:18 16.8        41
Positions are for J2000

Event circumstances last updated at 2019/07/02 02:24:39 UT

Marc W. Buie, Southwest Research Institute

RECON