RECON: TNO occultation with 53311

Event between (53311) Deucalion and star UC4-363-069705 with event index number of 114823

Geocentric closest approach at 2018/04/12 06:49:04 UTC

J2000 position of star is 15:06:04.7 -17:26:33
Equinox of date position of star is 15:07:03.2 -17:30:31
Stellar brightness R=15.6, use SENSEUP=128
Star is 107 degrees from the moon. Moon is 15% illuminated.
TNO apparent brightness V=22.9

[RECON map]
TNO is 42.8 AU from the Sun and 41.9 AU from the Earth.
The TNO is moving 21.6 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 378 seconds.
The 1-sigma cross-track error in the shadow position is 5137 km.
The sky-plane scale is 30374.8 km/arcsec.

The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 13.3 sec chord
Diameter=117.7 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 53311, (2018/04/12 06:49UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:31.9 -26:28:16  0.9 21.27  86
27Bet Lib      15:17:59.6 -09:26:57  2.6  8.49 107
21Nu Lib       15:07:39.0 -16:19:36  5.2  1.19 108
PPM 229800     15:09:16.5 -17:09:44  8.3  0.62 107
PPM 229765     15:07:46.1 -17:41:51  9.4  0.24 107
53311          15:07:06.5 -17:30:44 15.6       107
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 2.4 sigma about the mid-time.
The median site spacing is 10.2 km RECON observability=0.4 and success probability=3.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:52:20 -30.6 Dark Down 13.7 138.5 Really Low 06:37:20 - 07:07:20 -4283
Tonasket 06:52:21 -30.8 Dark Down 13.9 138.5 Really Low 06:37:21 - 07:07:21 -4298
Okanogan 06:52:21 -31.1 Dark Down 14.0 138.3 Really Low 06:37:21 - 07:07:21 -4324
Brewster 06:52:22 -31.3 Dark Down 14.2 138.1 Really Low 06:37:22 - 07:07:22 -4348
Manson/Chelan 06:52:23 -31.4 Dark Down 14.1 137.7 Really Low 06:37:23 - 07:07:23 -4372
Entiat 06:52:23 -31.6 Dark Down 14.3 137.6 Really Low 06:37:23 - 07:07:23 -4389
Wenatchee 06:52:24 -31.8 Dark Down 14.4 137.5 Really Low 06:37:24 - 07:07:24 -4409
Niwot 06:51:53 -41.2 Dark Down 26.7 149.6 Low 06:36:53 - 07:06:53 -4433
Ellensburg 06:52:26 -32.1 Dark Down 14.6 137.2 Really Low 06:37:26 - 07:07:26 -4443
Pasco 06:52:23 -33.2 Dark Down 15.8 138.3 Really Low 06:37:23 - 07:07:23 -4451
PNWRO 06:52:23 -33.5 Dark Down 16.1 138.5 Really Low 06:37:23 - 07:07:23 -4460
Yakima 06:52:27 -32.5 Dark Down 14.9 137.1 Really Low 06:37:27 - 07:07:27 -4471
George/Umatilla 06:52:24 -33.4 Dark Down 16.0 138.1 Really Low 06:37:24 - 07:07:24 -4480
Toppenish/White Swan 06:52:27 -32.8 Dark Down 15.2 137.3 Really Low 06:37:27 - 07:07:27 -4481
Goldendale 06:52:28 -33.2 Dark Down 15.4 136.8 Really Low 06:37:28 - 07:07:28 -4532
The Dalles 06:52:30 -33.3 Dark Down 15.4 136.4 Really Low 06:37:30 - 07:07:30 -4559
Maupin 06:52:30 -33.7 Dark Down 15.7 136.5 Really Low 06:37:30 - 07:07:30 -4584
Madras/Culver 06:52:31 -34.2 Dark Down 16.1 136.3 Really Low 06:37:31 - 07:07:31 -4624
Redmond 06:52:32 -34.5 Dark Down 16.3 136.2 Really Low 06:37:32 - 07:07:32 -4651
Sisters 06:52:33 -34.4 Dark Down 16.1 135.9 Really Low 06:37:33 - 07:07:33 -4662
Bend 06:52:33 -34.7 Dark Down 16.4 136.0 Really Low 06:37:33 - 07:07:33 -4671
Oregon Observatory 06:52:34 -34.8 Dark Down 16.5 135.9 Really Low 06:37:34 - 07:07:34 -4687
La Pine/Gilchrist 06:52:34 -35.0 Dark Down 16.6 135.8 Really Low 06:37:34 - 07:07:34 -4704
North Lake 06:52:34 -35.6 Dark Down 17.2 136.2 Really Low 06:37:34 - 07:07:34 -4716
Paisley 06:52:34 -36.2 Dark Down 17.8 136.4 Really Low 06:37:34 - 07:07:34 -4745
Lakeview 06:52:34 -36.7 Dark Down 18.3 136.5 Really Low 06:37:34 - 07:07:34 -4775
Chiloquin 06:52:36 -35.9 Dark Down 17.2 135.3 Really Low 06:37:36 - 07:07:36 -4796
Cedarville 06:52:34 -37.3 Dark Down 18.8 136.5 Really Low 06:37:34 - 07:07:34 -4818
Klamath Falls 06:52:37 -36.3 Dark Down 17.5 135.3 Really Low 06:37:37 - 07:07:37 -4819
Tulelake 06:52:36 -36.6 Dark Down 17.8 135.5 Really Low 06:37:36 - 07:07:36 -4829
Fall River/Burney 06:52:37 -37.4 Dark Down 18.5 135.3 Really Low 06:37:37 - 07:07:37 -4895
Susanville 06:52:36 -38.2 Dark Down 19.4 135.8 Really Low 06:37:36 - 07:07:36 -4918
Gimple 06:52:37 -38.4 Dark Down 19.5 135.5 Really Low 06:37:37 - 07:07:37 -4946
Greenville 06:52:38 -38.4 Dark Down 19.4 135.5 Really Low 06:37:38 - 07:07:38 -4949
Reno 06:52:36 -39.3 Dark Down 20.4 136.3 Low 06:37:36 - 07:07:36 -4956
Portola 06:52:37 -38.9 Dark Down 19.9 135.8 Really Low 06:37:37 - 07:07:37 -4957
Quincy 06:52:38 -38.6 Dark Down 19.6 135.4 Really Low 06:37:38 - 07:07:38 -4964
Yerington 06:52:35 -40.0 Dark Down 21.2 136.7 Low 06:37:35 - 07:07:35 -4976
Tonopah 06:52:31 -41.4 Dark Down 22.9 138.1 Low 06:37:31 - 07:07:31 -4981
Carson City 06:52:37 -39.6 Dark Down 20.7 136.2 Low 06:37:37 - 07:07:37 -4983
Hawthorne 06:52:34 -40.6 Dark Down 21.8 137.0 Low 06:37:34 - 07:07:34 -4994
Gardnerville 06:52:36 -39.9 Dark Down 20.9 136.2 Low 06:37:36 - 07:07:36 -5000
Indian Springs 06:52:28 -43.2 Dark Down 24.8 139.0 Low 06:37:28 - 07:07:28 -5044
Lee Vining 06:52:36 -41.0 Dark Down 22.0 136.4 Low 06:37:36 - 07:07:36 -5054
Beatty 06:52:31 -42.6 Dark Down 24.0 138.1 Low 06:37:31 - 07:07:31 -5056
Henderson 06:52:27 -43.9 Dark Down 25.6 139.4 Low 06:37:27 - 07:07:27 -5061
DCO 06:52:21 -45.1 Dark Down 27.2 140.7 Low 06:37:21 - 07:07:21 -5070
Patrick 06:52:23 -44.7 Dark Down 26.6 140.2 Low 06:37:23 - 07:07:23 -5071
Bishop 06:52:34 -41.7 Dark Down 22.8 136.9 Low 06:37:34 - 07:07:34 -5076
Kingman/Dolan Springs 06:52:24 -44.9 Dark Down 26.7 140.0 Low 06:37:24 - 07:07:24 -5095
Searchlight/Boulder City 06:52:27 -44.4 Dark Down 26.1 139.3 Low 06:37:27 - 07:07:27 -5104
Laughlin/Bullhead City 06:52:27 -44.8 Dark Down 26.5 139.5 Low 06:37:27 - 07:07:27 -5116
Lone Pine 06:52:35 -42.5 Dark Down 23.5 136.9 Low 06:37:35 - 07:07:35 -5124
Mohave Valley 06:52:27 -45.0 Dark Down 26.7 139.4 Low 06:37:27 - 07:07:27 -5137
Lake Havasu City 06:52:26 -45.5 Dark Down 27.1 139.5 Low 06:37:26 - 07:07:26 -5160
Parker 06:52:27 -45.8 Dark Down 27.4 139.4 Low 06:37:27 - 07:07:27 -5187
Blythe 06:52:27 -46.3 Dark Down 27.6 139.0 Low 06:37:27 - 07:07:27 -5240
Idyllwild 06:52:34 -45.6 Dark Down 26.4 137.2 Low 06:37:34 - 07:07:34 -5306
Calipatria 06:52:30 -46.5 Dark Down 27.5 138.0 Low 06:37:30 - 07:07:30 -5314
Yuma 06:52:27 -47.1 Dark Down 28.3 138.6 Low 06:37:27 - 07:07:27 -5317
CPSLO 06:52:44 -42.9 Dark Down 23.0 134.4 Low 06:37:44 - 07:07:44 -5321
Wildwood 06:52:39 -44.7 Dark Down 25.1 135.7 Low 06:37:39 - 07:07:39 -5346

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 53311, (2018/04/12 06:49UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9 21.27  86
27Bet Lib      15:17:00.3 -09:22:59  2.6  8.49 107
21Nu Lib       15:06:37.6 -16:15:25  5.2  1.19 108
PPM 229800     15:08:14.8 -17:05:35  8.3  0.62 107
PPM 229765     15:06:44.2 -17:37:40  9.4  0.24 107
53311          15:06:04.7 -17:26:33 15.6       107
Positions are for J2000

Event circumstances last updated at 2017/04/24 16:22:36 UT

Marc W. Buie, Southwest Research Institute

RECON