RECON: TNO occultation with 136120

Event between (136120) 03LG7 and star UC4-387-087504 with event index number of 190944

Geocentric closest approach at 2019/05/20 06:37:43 UTC

J2000 position of star is 17:57:47.5 -12:43:46
Equinox of date position of star is 17:58:48.0 -12:43:49
Stellar brightness R=14.5, use SENSEUP=128
Star is 15 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=23.6

[RECON map]
TNO is 36.6 AU from the Sun and 35.7 AU from the Earth.
The TNO is moving 20.2 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 394 seconds.
The 1-sigma cross-track error in the shadow position is 3101 km.
The sky-plane scale is 25927.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=158.5 km assuming a 5% albedo -- 7.8 sec chord
Diameter=64.7 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is 3:1EE
 
 
 
 
 
 

Star training set for 136120, (2019/05/20 06:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.9 -26:28:24  0.9 24.85  10
35Eta Oph      17:11:29.5 -15:44:51  2.6 11.87   5
PPM 233722     17:55:12.4 -11:20:24  6.5  1.66  15
PPM 233868     18:00:47.3 -12:20:55  8.4  0.60  16
PPM 233792     17:58:14.8 -12:51:26  9.7  0.20  15
136120         17:58:52.9 -12:43:49 14.5        16
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 2.3 sigma about the mid-time.
The median site spacing is 20.6 km RECON observability=0.4 and success probability=4.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:41:17 -19.2 Dark Up 13.8 128.8 Really Low 06:26:17 - 06:56:17 5439
Tonasket 06:41:18 -19.5 Dark Up 13.9 128.7 Really Low 06:26:18 - 06:56:18 5422
Okanogan 06:41:19 -19.8 Dark Up 14.0 128.5 Really Low 06:26:19 - 06:56:19 5394
Brewster 06:41:20 -20.0 Dark Up 14.1 128.3 Really Low 06:26:20 - 06:56:20 5370
Manson/Chelan 06:41:22 -20.1 Dark Up 14.0 128.0 Really Low 06:26:22 - 06:56:22 5346
Entiat 06:41:22 -20.3 Dark Up 14.1 127.9 Really Low 06:26:22 - 06:56:22 5328
Wenatchee 06:41:23 -20.5 Dark Up 14.2 127.7 Really Low 06:26:23 - 06:56:23 5307
Ellensburg 06:41:24 -20.8 Dark Up 14.4 127.5 Really Low 06:26:24 - 06:56:24 5270
Pasco 06:41:23 -21.9 Dark Up 15.6 128.5 Really Low 06:26:23 - 06:56:23 5247
Yakima 06:41:26 -21.2 Dark Up 14.6 127.4 Really Low 06:26:26 - 06:56:26 5239
PNWRO 06:41:23 -22.1 Dark Up 15.9 128.7 Really Low 06:26:23 - 06:56:23 5234
Toppenish/White Swan 06:41:26 -21.5 Dark Up 14.8 127.5 Really Low 06:26:26 - 06:56:26 5227
George/Umatilla 06:41:24 -22.1 Dark Up 15.7 128.3 Really Low 06:26:24 - 06:56:24 5216
Goldendale 06:41:28 -21.9 Dark Up 15.0 127.0 Really Low 06:26:28 - 06:56:28 5174
The Dalles 06:41:29 -22.0 Dark Up 14.9 126.7 Really Low 06:26:29 - 06:56:29 5148
Niwot 06:40:57 -29.8 Dark Up 27.1 139.0 Low 06:25:57 - 06:55:57 5122
Maupin 06:41:29 -22.4 Dark Up 15.2 126.7 Really Low 06:26:29 - 06:56:29 5118
Madras/Culver 06:41:32 -22.9 Dark Up 15.5 126.5 Really Low 06:26:32 - 06:56:32 5074
Redmond 06:41:33 -23.3 Dark Up 15.7 126.4 Really Low 06:26:33 - 06:56:33 5045
Sisters 06:41:33 -23.1 Dark Up 15.4 126.1 Really Low 06:26:33 - 06:56:33 5037
Bend 06:41:32 -23.4 Dark Up 15.7 126.2 Really Low 06:26:32 - 06:56:32 5024
Oregon Observatory 06:41:33 -23.6 Dark Up 15.8 126.1 Really Low 06:26:33 - 06:56:33 5007
La Pine/Gilchrist 06:41:34 -23.7 Dark Up 15.8 126.0 Really Low 06:26:34 - 06:56:34 4989
North Lake 06:41:34 -24.3 Dark Up 16.5 126.4 Really Low 06:26:34 - 06:56:34 4969
Paisley 06:41:34 -24.9 Dark Up 17.0 126.6 Really Low 06:26:34 - 06:56:34 4934
Lakeview 06:41:34 -25.4 Dark Up 17.4 126.6 Really Low 06:26:34 - 06:56:34 4897
Chiloquin 06:41:38 -24.7 Dark Up 16.3 125.5 Really Low 06:26:38 - 06:56:38 4891
Klamath Falls 06:41:38 -25.0 Dark Up 16.5 125.5 Really Low 06:26:38 - 06:56:38 4865
Tulelake 06:41:38 -25.4 Dark Up 16.9 125.6 Really Low 06:26:38 - 06:56:38 4850
Cedarville 06:41:36 -26.1 Dark Up 17.9 126.6 Really Low 06:26:36 - 06:56:36 4848
Fall River/Burney 06:41:40 -26.2 Dark Up 17.5 125.5 Really Low 06:26:40 - 06:56:40 4777
Susanville 06:41:40 -27.0 Dark Up 18.3 125.9 Really Low 06:26:40 - 06:56:40 4744
Gimple 06:41:40 -27.2 Dark Up 18.3 125.7 Really Low 06:26:40 - 06:56:40 4715
Greenville 06:41:40 -27.2 Dark Up 18.3 125.6 Really Low 06:26:40 - 06:56:40 4713
Portola 06:41:40 -27.6 Dark Up 18.8 125.9 Really Low 06:26:40 - 06:56:40 4698
Quincy 06:41:40 -27.4 Dark Up 18.4 125.5 Really Low 06:26:40 - 06:56:40 4696
Reno 06:41:39 -28.1 Dark Up 19.3 126.3 Really Low 06:26:39 - 06:56:39 4692
Yerington 06:41:37 -28.7 Dark Up 20.1 126.7 Low 06:26:37 - 06:56:37 4663
Carson City 06:41:40 -28.4 Dark Up 19.6 126.2 Really Low 06:26:40 - 06:56:40 4663
Gardnerville 06:41:40 -28.6 Dark Up 19.7 126.2 Really Low 06:26:40 - 06:56:40 4643
Hawthorne 06:41:38 -29.3 Dark Up 20.7 127.0 Low 06:26:38 - 06:56:38 4638
Tonopah 06:41:35 -30.1 Dark Up 21.8 128.0 Low 06:26:35 - 06:56:35 4636
Lee Vining 06:41:40 -29.7 Dark Up 20.7 126.4 Low 06:26:40 - 06:56:40 4577
Indian Springs 06:41:33 -31.9 Dark Up 23.7 128.7 Low 06:26:33 - 06:56:33 4551
Beatty 06:41:35 -31.3 Dark Up 22.8 128.0 Low 06:26:35 - 06:56:35 4550
Bishop 06:41:39 -30.5 Dark Up 21.5 126.8 Low 06:26:39 - 06:56:39 4545
Henderson 06:41:32 -32.5 Dark Up 24.5 129.1 Low 06:26:32 - 06:56:32 4524
Patrick 06:41:29 -33.4 Dark Up 25.6 129.8 Low 06:26:29 - 06:56:29 4501
DCO 06:41:28 -33.8 Dark Up 26.2 130.2 Low 06:26:28 - 06:56:28 4494
Lone Pine 06:41:39 -31.3 Dark Up 22.2 126.8 Low 06:26:39 - 06:56:39 4488
Kingman/Dolan Springs 06:41:30 -33.6 Dark Up 25.6 129.5 Low 06:26:30 - 06:56:30 4477
Searchlight/Boulder City 06:41:33 -33.1 Dark Up 24.9 128.9 Low 06:26:33 - 06:56:33 4476
Laughlin/Bullhead City 06:41:31 -33.5 Dark Up 25.3 129.1 Low 06:26:31 - 06:56:31 4460
Mohave Valley 06:41:32 -33.7 Dark Up 25.5 129.0 Low 06:26:32 - 06:56:32 4437
Lake Havasu City 06:41:32 -34.2 Dark Up 25.9 129.1 Low 06:26:32 - 06:56:32 4408
Parker 06:41:33 -34.5 Dark Up 26.1 129.0 Low 06:26:33 - 06:56:33 4379
Blythe 06:41:34 -35.0 Dark Up 26.2 128.5 Low 06:26:34 - 06:56:34 4324
CPSLO 06:41:48 -31.8 Dark Up 21.3 124.4 Low 06:26:48 - 06:56:48 4303
Idyllwild 06:41:39 -34.4 Dark Up 24.8 126.9 Low 06:26:39 - 06:56:39 4274
Calipatria 06:41:37 -35.2 Dark Up 25.9 127.6 Low 06:26:37 - 06:56:37 4253
Wildwood 06:41:44 -33.5 Dark Up 23.3 125.6 Low 06:26:44 - 06:56:44 4252
Yuma 06:41:35 -35.9 Dark Up 26.8 128.1 Low 06:26:35 - 06:56:35 4240

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 136120, (2019/05/20 06:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 24.85  10
35Eta Oph      17:10:22.7 -15:43:29  2.6 11.87   5
PPM 233722     17:54:07.6 -11:20:15  6.5  1.66  15
PPM 233868     17:59:42.0 -12:20:56  8.4  0.60  16
PPM 233792     17:57:09.3 -12:51:23  9.7  0.20  15
136120         17:57:47.5 -12:43:46 14.5        15
Positions are for J2000

Event circumstances last updated at 2017/12/06 18:57:42 UT

Marc W. Buie, Southwest Research Institute

RECON