RECON: TNO occultation with 535229

Event between (535229) 14YG50 and star GA1140:02917855 with event index number of 1618324

Geocentric closest approach at 2020/01/30 11:40:58 UTC

J2000 position of star is 07:43:14.6 +24:55:13
Equinox of date position of star is 07:44:25.4 +24:52:22
Stellar brightness G=15.7, use SENSEUP=128
Star is 102 degrees from the moon. Moon is 27% illuminated.
TNO apparent brightness V=22.6

[RECON map]
TNO is 34.6 AU from the Sun and 33.7 AU from the Earth.
The TNO is moving 24.2 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 130 seconds.
The 1-sigma cross-track error in the shadow position is 1984 km.
The sky-plane scale is 24407.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 9.1 sec chord
Diameter=89.3 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 535229, (2020/01/30 11:41UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:32.5 +27:58:34  1.1  3.14 102
77Kap Gem      07:45:39.4 +24:20:54  3.6  0.59 102
PPM 097838     07:42:16.1 +24:55:01  7.6  0.50 101
PPM 097896     07:44:56.4 +25:04:20 10.5  0.23 102
535229         07:44:27.5 +24:52:17 15.7       102
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 12.6 km RECON observability=1.0 and success probability=3.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 11:38:32 -37.7 Dark Down 32.4 271.3 Up 11:27:14 - 11:49:49 5656
Summerland 11:38:31 -37.9 Dark Down 32.5 271.2 Up 11:27:14 - 11:49:49 5626
Penticton 11:38:31 -37.9 Dark Down 32.5 271.4 Up 11:27:13 - 11:49:48 5624
Okanagan Falls 11:38:30 -38.0 Dark Down 32.5 271.5 Up 11:27:13 - 11:49:48 5610
Oliver 11:38:30 -38.0 Dark Down 32.5 271.6 Up 11:27:12 - 11:49:47 5599
Anarchist Mountain Observatory 11:38:28 -37.9 Dark Down 32.3 271.8 Up 11:27:11 - 11:49:46 5592
Oroville 11:38:29 -38.0 Dark Down 32.4 271.8 Up 11:27:11 - 11:49:46 5584
Tonasket 11:38:28 -38.1 Dark Down 32.4 272.0 Up 11:27:10 - 11:49:45 5567
Okanogan 11:38:27 -38.3 Dark Down 32.5 272.1 Up 11:27:09 - 11:49:44 5538
Brewster 11:38:26 -38.5 Dark Down 32.6 272.1 Up 11:27:09 - 11:49:44 5512
Manson/Chelan 11:38:26 -38.8 Dark Down 32.8 272.0 Up 11:27:09 - 11:49:44 5485
Wenatchee 11:38:24 -39.1 Dark Down 32.9 272.1 Up 11:27:07 - 11:49:42 5444
Ellensburg 11:38:23 -39.3 Dark Down 33.1 272.2 Up 11:27:05 - 11:49:40 5405
SwRI 11:37:48 -29.6 Dark Down 21.1 285.4 Low 11:26:31 - 11:49:06 5400
Pasco 11:38:19 -38.6 Dark Down 32.1 273.7 Up 11:27:02 - 11:49:37 5394
PNWRO 11:38:18 -38.5 Dark Down 31.9 274.0 Up 11:27:00 - 11:49:35 5383
Yakima 11:38:22 -39.5 Dark Down 33.1 272.5 Up 11:27:04 - 11:49:39 5374
Toppenish/White Swan 11:38:21 -39.4 Dark Down 32.9 272.7 Up 11:27:03 - 11:49:38 5363
George/Umatilla 11:38:18 -38.9 Dark Down 32.2 273.8 Up 11:27:00 - 11:49:35 5362
Goldendale 11:38:19 -39.9 Dark Down 33.2 272.8 Up 11:27:02 - 11:49:37 5306
The Dalles 11:38:20 -40.2 Dark Down 33.5 272.7 Up 11:27:02 - 11:49:37 5277
Maupin 11:38:18 -40.2 Dark Down 33.4 273.0 Up 11:27:00 - 11:49:35 5248
Madras/Culver 11:38:16 -40.4 Dark Down 33.4 273.4 Up 11:26:58 - 11:49:33 5203
Redmond 11:38:15 -40.5 Dark Down 33.4 273.6 Up 11:26:58 - 11:49:33 5173
Sisters 11:38:15 -40.8 Dark Down 33.7 273.3 Up 11:26:58 - 11:49:33 5162
Bend 11:38:14 -40.7 Dark Down 33.5 273.6 Up 11:26:57 - 11:49:32 5152
Oregon Observatory 11:38:14 -40.8 Dark Down 33.6 273.6 Up 11:26:57 - 11:49:32 5133
La Pine/Gilchrist 11:38:13 -40.9 Dark Down 33.6 273.7 Up 11:26:56 - 11:49:31 5115
North Lake 11:38:11 -40.6 Dark Down 33.1 274.4 Up 11:26:54 - 11:49:29 5100
Paisley 11:38:10 -40.5 Dark Down 32.8 275.0 Up 11:26:52 - 11:49:27 5068
Lakeview 11:38:07 -40.5 Dark Down 32.7 275.4 Up 11:26:49 - 11:49:24 5034
Chiloquin 11:38:11 -41.5 Dark Down 33.8 274.2 Up 11:26:53 - 11:49:28 5013
Klamath Falls 11:38:10 -41.5 Dark Down 33.7 274.5 Up 11:26:52 - 11:49:27 4988
Cedarville 11:38:05 -40.6 Dark Down 32.5 276.0 Up 11:26:48 - 11:49:23 4986
Tulelake 11:38:08 -41.4 Dark Down 33.5 274.9 Up 11:26:51 - 11:49:26 4976
Fall River/Burney 11:38:05 -41.6 Dark Down 33.3 275.5 Up 11:26:48 - 11:49:23 4904
Susanville 11:38:02 -41.2 Dark Down 32.7 276.4 Up 11:26:44 - 11:49:19 4878
Gimple 11:38:02 -41.4 Dark Down 32.8 276.4 Up 11:26:44 - 11:49:19 4847
Greenville 11:38:02 -41.4 Dark Down 32.9 276.4 Up 11:26:44 - 11:49:19 4844
Reno 11:37:59 -40.7 Dark Down 32.0 277.4 Up 11:26:41 - 11:49:16 4835
Portola 11:38:00 -41.2 Dark Down 32.5 276.8 Up 11:26:42 - 11:49:17 4834
Quincy 11:38:01 -41.5 Dark Down 32.9 276.5 Up 11:26:44 - 11:49:19 4827
Yerington 11:37:56 -40.3 Dark Down 31.4 278.1 Up 11:26:38 - 11:49:13 4812
Carson City 11:37:57 -40.8 Dark Down 31.9 277.6 Up 11:26:40 - 11:49:15 4806
Tonopah 11:37:51 -39.0 Dark Down 29.8 279.7 Low 11:26:34 - 11:49:09 4805
Hawthorne 11:37:54 -40.0 Dark Down 30.9 278.7 Up 11:26:36 - 11:49:11 4793
Gardnerville 11:37:57 -40.8 Dark Down 31.9 277.8 Up 11:26:39 - 11:49:14 4787
Indian Springs 11:37:45 -38.0 Dark Down 28.3 281.3 Low 11:26:28 - 11:49:03 4738
Lee Vining 11:37:53 -40.5 Dark Down 31.2 278.7 Up 11:26:36 - 11:49:11 4727
Beatty 11:37:47 -38.8 Dark Down 29.2 280.6 Low 11:26:30 - 11:49:05 4725
Henderson 11:37:43 -37.5 Dark Down 27.7 281.9 Low 11:26:26 - 11:49:01 4719
Patrick 11:37:40 -36.6 Dark Down 26.7 282.8 Low 11:26:23 - 11:48:58 4709
Bishop 11:37:51 -40.0 Dark Down 30.6 279.5 Up 11:26:33 - 11:49:08 4703
Kingman/Dolan Springs 11:37:40 -36.8 Dark Down 26.8 282.8 Low 11:26:22 - 11:48:57 4683
Searchlight/Boulder City 11:37:41 -37.5 Dark Down 27.5 282.3 Low 11:26:24 - 11:48:59 4673
Laughlin/Bullhead City 11:37:40 -37.2 Dark Down 27.2 282.6 Low 11:26:22 - 11:48:57 4661
Lone Pine 11:37:48 -39.8 Dark Down 30.2 280.1 Up 11:26:30 - 11:49:05 4651
Mohave Valley 11:37:39 -37.2 Dark Down 27.1 282.7 Low 11:26:22 - 11:48:57 4638
Lake Havasu City 11:37:38 -37.0 Dark Down 26.8 283.0 Low 11:26:20 - 11:48:55 4613
Parker 11:37:37 -37.0 Dark Down 26.7 283.2 Low 11:26:19 - 11:48:54 4584
Blythe 11:37:36 -37.3 Dark Down 26.9 283.3 Low 11:26:18 - 11:48:53 4527
Idyllwild 11:37:38 -39.1 Dark Down 28.6 282.3 Low 11:26:21 - 11:48:56 4454
Calipatria 11:37:35 -38.1 Dark Down 27.5 283.1 Low 11:26:18 - 11:48:53 4448
Yuma 11:37:33 -37.4 Dark Down 26.7 283.8 Low 11:26:16 - 11:48:51 4445
CPSLO 11:37:47 -42.1 Dark Down 32.1 279.5 Up 11:26:30 - 11:49:05 4440
Wildwood 11:37:42 -40.6 Dark Down 30.2 281.2 Up 11:26:24 - 11:48:59 4412

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 535229, (2020/01/30 11:41UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1  3.14 102
77Kap Gem      07:44:26.8 +24:23:52  3.6  0.59 102
PPM 097838     07:41:03.1 +24:57:54  7.6  0.50 101
PPM 097896     07:43:43.4 +25:07:17 10.5  0.23 102
535229         07:43:14.6 +24:55:13 15.7       102
Positions are for J2000

Event circumstances last updated at 2019/07/02 02:28:05 UT

Marc W. Buie, Southwest Research Institute

RECON