RECON: TNO occultation with 175113

Event between (175113) 04PF115 and star UC4-353-195119 with event index number of 203715

Geocentric closest approach at 2019/08/01 07:53:04 UTC

J2000 position of star is 23:11:26.8 -19:35:26
Equinox of date position of star is 23:12:23.7 -19:29:35
Stellar brightness R=15.3, use SENSEUP=128
Star is 149 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=20.5

[RECON map]
TNO is 41.6 AU from the Sun and 40.7 AU from the Earth.
The TNO is moving 20.7 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 145 seconds.
The 1-sigma cross-track error in the shadow position is 2355 km.
The sky-plane scale is 29540.7 km/arcsec.

The TNO has an absolute magnitude Hv=4.3
Diameter=831.8 km assuming a 5% albedo -- 40.1 sec chord
Diameter=339.6 km assuming a 30% albedo -- 16.4 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 175113, (2019/08/01 07:53UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:43.7 -29:31:05  1.2 10.51 151
88 Aqr         23:10:29.3 -21:03:57  3.7  1.65 149
PPM 241360     23:15:09.6 -19:35:20  7.8  0.64 148
PPM 241268     23:11:21.7 -19:21:22  9.8  0.29 149
175113         23:12:28.9 -19:29:02 15.3       148
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 11.3 km RECON observability=0.4 and success probability=2.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Manson/Chelan 07:52:26 -24.0 Dark Down 13.5 141.2 Really Low 07:39:52 - 08:05:00 4531
Entiat 07:52:27 -24.2 Dark Down 13.6 141.1 Really Low 07:39:53 - 08:05:01 4529
Wenatchee 07:52:27 -24.4 Dark Down 13.8 141.0 Really Low 07:39:53 - 08:05:01 4528
Oroville 07:52:20 -23.0 Dark Down 13.0 142.0 Really Low 07:39:46 - 08:04:54 4528
Ellensburg 07:52:30 -24.8 Dark Down 14.0 140.8 Really Low 07:39:56 - 08:05:04 4527
Brewster 07:52:24 -23.8 Dark Down 13.5 141.6 Really Low 07:39:50 - 08:04:58 4526
Tonasket 07:52:21 -23.2 Dark Down 13.1 142.0 Really Low 07:39:47 - 08:04:55 4526
Okanogan 07:52:22 -23.5 Dark Down 13.4 141.8 Really Low 07:39:48 - 08:04:56 4525
Yakima 07:52:31 -25.3 Dark Down 14.3 140.7 Really Low 07:39:57 - 08:05:05 4522
The Dalles 07:52:38 -26.2 Dark Down 14.8 140.0 Really Low 07:40:04 - 08:05:12 4520
Goldendale 07:52:34 -26.0 Dark Down 14.8 140.4 Really Low 07:40:00 - 08:05:08 4516
Toppenish/White Swan 07:52:33 -25.5 Dark Down 14.6 140.8 Really Low 07:39:59 - 08:05:07 4516
Maupin 07:52:37 -26.6 Dark Down 15.2 140.0 Really Low 07:40:03 - 08:05:11 4511
Sisters 07:52:42 -27.5 Dark Down 15.7 139.5 Really Low 07:40:08 - 08:05:16 4506
Madras/Culver 07:52:40 -27.2 Dark Down 15.6 139.9 Really Low 07:40:06 - 08:05:14 4503
Redmond 07:52:41 -27.5 Dark Down 15.9 139.8 Really Low 07:40:07 - 08:05:15 4498
Bend 07:52:42 -27.7 Dark Down 16.0 139.6 Really Low 07:40:08 - 08:05:16 4497
Oregon Observatory 07:52:43 -27.9 Dark Down 16.0 139.5 Really Low 07:40:09 - 08:05:17 4496
La Pine/Gilchrist 07:52:45 -28.1 Dark Down 16.2 139.4 Really Low 07:40:11 - 08:05:19 4494
Pasco 07:52:29 -25.6 Dark Down 15.2 141.9 Really Low 07:39:55 - 08:05:03 4490
George/Umatilla 07:52:30 -26.0 Dark Down 15.4 141.6 Really Low 07:39:56 - 08:05:04 4490
PNWRO 07:52:29 -25.9 Dark Down 15.5 142.0 Really Low 07:39:55 - 08:05:03 4482
Chiloquin 07:52:50 -29.2 Dark Down 16.8 138.9 Really Low 07:40:16 - 08:05:24 4479
North Lake 07:52:44 -28.6 Dark Down 16.8 139.8 Really Low 07:40:10 - 08:05:18 4474
Klamath Falls 07:52:49 -29.5 Dark Down 17.1 138.9 Really Low 07:40:15 - 08:05:23 4470
Tulelake 07:52:50 -29.8 Dark Down 17.5 139.1 Really Low 07:40:16 - 08:05:24 4458
Paisley 07:52:45 -29.1 Dark Down 17.4 140.1 Really Low 07:40:11 - 08:05:19 4456
Lakeview 07:52:45 -29.7 Dark Down 17.9 140.1 Really Low 07:40:11 - 08:05:19 4441
Fall River/Burney 07:52:53 -30.7 Dark Down 18.2 139.0 Really Low 07:40:19 - 08:05:27 4436
Cedarville 07:52:48 -30.3 Dark Down 18.4 140.1 Really Low 07:40:14 - 08:05:22 4423
Susanville 07:52:52 -31.4 Dark Down 19.1 139.5 Really Low 07:40:18 - 08:05:26 4406
Greenville 07:52:55 -31.7 Dark Down 19.1 139.2 Really Low 07:40:21 - 08:05:29 4406
Gimple 07:52:54 -31.7 Dark Down 19.2 139.3 Really Low 07:40:20 - 08:05:28 4404
Quincy 07:52:56 -31.9 Dark Down 19.3 139.2 Really Low 07:40:22 - 08:05:30 4400
Portola 07:52:54 -32.0 Dark Down 19.6 139.5 Really Low 07:40:20 - 08:05:28 4387
Reno 07:52:53 -32.3 Dark Down 20.2 140.0 Low 07:40:19 - 08:05:27 4367
Carson City 07:52:54 -32.7 Dark Down 20.4 139.9 Low 07:40:20 - 08:05:28 4356
Gardnerville 07:52:57 -32.9 Dark Down 20.7 139.9 Low 07:40:23 - 08:05:31 4349
Yerington 07:52:52 -32.9 Dark Down 20.9 140.4 Low 07:40:18 - 08:05:26 4337
Hawthorne 07:52:54 -33.4 Dark Down 21.5 140.8 Low 07:40:20 - 08:05:28 4312
Lee Vining 07:52:57 -33.9 Dark Down 21.7 140.2 Low 07:40:23 - 08:05:31 4307
Bishop 07:52:56 -34.6 Dark Down 22.6 140.7 Low 07:40:22 - 08:05:30 4272
Tonopah 07:52:51 -33.9 Dark Down 22.6 141.9 Low 07:40:17 - 08:05:25 4265
CPSLO 07:53:10 -36.5 Dark Down 23.0 138.3 Low 07:40:36 - 08:05:44 4256
Lone Pine 07:52:58 -35.3 Dark Down 23.3 140.8 Low 07:40:24 - 08:05:32 4240
Beatty 07:52:53 -35.0 Dark Down 23.7 142.0 Low 07:40:19 - 08:05:27 4218
Indian Springs 07:52:51 -35.4 Dark Down 24.5 142.8 Low 07:40:17 - 08:05:25 4180
Wildwood 07:53:08 -37.8 Dark Down 25.0 139.6 Low 07:40:34 - 08:05:42 4166
Henderson 07:52:50 -35.9 Dark Down 25.3 143.3 Low 07:40:16 - 08:05:24 4144
Searchlight/Boulder City 07:52:51 -36.5 Dark Down 25.8 143.2 Low 07:40:17 - 08:05:25 4122
Idyllwild 07:53:03 -38.2 Dark Down 26.2 141.2 Low 07:40:29 - 08:05:37 4105
Laughlin/Bullhead City 07:52:52 -36.7 Dark Down 26.2 143.4 Low 07:40:18 - 08:05:26 4102
Mohave Valley 07:52:53 -37.0 Dark Down 26.4 143.4 Low 07:40:19 - 08:05:27 4091
Patrick 07:52:47 -36.5 Dark Down 26.3 144.1 Low 07:40:13 - 08:05:21 4091
Kingman/Dolan Springs 07:52:50 -36.7 Dark Down 26.4 143.9 Low 07:40:16 - 08:05:24 4088
Lake Havasu City 07:52:54 -37.4 Dark Down 26.8 143.5 Low 07:40:20 - 08:05:28 4070
DCO 07:52:48 -36.7 Dark Down 26.9 144.7 Low 07:40:14 - 08:05:22 4060
Parker 07:52:54 -37.8 Dark Down 27.1 143.4 Low 07:40:20 - 08:05:28 4056
Calipatria 07:53:02 -38.8 Dark Down 27.3 142.0 Low 07:40:28 - 08:05:36 4050
Blythe 07:52:57 -38.3 Dark Down 27.4 143.0 Low 07:40:23 - 08:05:31 4044
Yuma 07:53:00 -39.2 Dark Down 28.1 142.7 Low 07:40:26 - 08:05:34 4008
Niwot 07:52:05 -30.9 Dark Down 25.8 153.4 Low 07:39:31 - 08:04:39 3986

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 175113, (2019/08/01 07:53UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 10.51 151
88 Aqr         23:09:26.9 -21:10:20  3.7  1.65 149
PPM 241360     23:14:07.6 -19:41:45  7.8  0.64 148
PPM 241268     23:10:19.5 -19:27:45  9.8  0.29 149
175113         23:11:26.8 -19:35:26 15.3       149
Positions are for J2000

Event circumstances last updated at 2017/12/06 19:10:57 UT

Marc W. Buie, Southwest Research Institute

RECON