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 07:53:19 UTC

J2000 position of star is 23:11:26.8 -19:35:26
Equinox of date position of star is 23:12:22.6 -19:29:41
Stellar brightness R=15.3, use SENSEUP=128
Star is 149 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=20.7

[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 115 seconds.
The 1-sigma cross-track error in the shadow position is 1958 km.
The sky-plane scale is 29540.8 km/arcsec.

The TNO has an absolute magnitude Hv=4.5
Diameter=758.6 km assuming a 5% albedo -- 36.6 sec chord
Diameter=309.7 km assuming a 30% albedo -- 14.9 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 11.7 km RECON observability=0.4 and success probability=2.2%
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 07:52:41 -24.0 Dark Down 13.5 141.3 Really Low 07:42:38 - 08:02:44 4152
Entiat 07:52:42 -24.2 Dark Down 13.7 141.2 Really Low 07:42:39 - 08:02:45 4151
Wenatchee 07:52:42 -24.4 Dark Down 13.8 141.1 Really Low 07:42:39 - 08:02:45 4150
Oroville 07:52:34 -23.0 Dark Down 13.0 142.0 Really Low 07:42:31 - 08:02:37 4150
Ellensburg 07:52:44 -24.8 Dark Down 14.1 140.8 Really Low 07:42:41 - 08:02:47 4149
Brewster 07:52:39 -23.8 Dark Down 13.5 141.6 Really Low 07:42:36 - 08:02:42 4147
Tonasket 07:52:35 -23.2 Dark Down 13.2 142.0 Really Low 07:42:32 - 08:02:38 4147
Okanogan 07:52:37 -23.5 Dark Down 13.4 141.8 Really Low 07:42:34 - 08:02:40 4147
Yakima 07:52:46 -25.3 Dark Down 14.4 140.7 Really Low 07:42:43 - 08:02:49 4144
The Dalles 07:52:51 -26.2 Dark Down 14.9 140.1 Really Low 07:42:48 - 08:02:54 4141
Goldendale 07:52:49 -26.0 Dark Down 14.8 140.4 Really Low 07:42:46 - 08:02:52 4138
Toppenish/White Swan 07:52:46 -25.5 Dark Down 14.6 140.9 Really Low 07:42:43 - 08:02:49 4138
Maupin 07:52:52 -26.6 Dark Down 15.2 140.1 Really Low 07:42:49 - 08:02:55 4133
Sisters 07:52:58 -27.5 Dark Down 15.7 139.5 Really Low 07:42:55 - 08:03:01 4128
Madras/Culver 07:52:55 -27.2 Dark Down 15.6 140.0 Really Low 07:42:52 - 08:02:58 4125
Redmond 07:52:56 -27.5 Dark Down 15.9 139.9 Really Low 07:42:53 - 08:02:59 4120
Bend 07:52:58 -27.7 Dark Down 16.0 139.7 Really Low 07:42:55 - 08:03:01 4119
Oregon Observatory 07:52:58 -27.9 Dark Down 16.1 139.6 Really Low 07:42:55 - 08:03:01 4118
La Pine/Gilchrist 07:53:00 -28.1 Dark Down 16.2 139.5 Really Low 07:42:57 - 08:03:03 4116
Pasco 07:52:45 -25.7 Dark Down 15.2 141.9 Really Low 07:42:42 - 08:02:48 4111
George/Umatilla 07:52:44 -26.0 Dark Down 15.4 141.7 Really Low 07:42:41 - 08:02:47 4110
PNWRO 07:52:44 -25.9 Dark Down 15.5 142.1 Really Low 07:42:41 - 08:02:47 4103
Chiloquin 07:53:04 -29.2 Dark Down 16.9 139.0 Really Low 07:43:01 - 08:03:07 4101
North Lake 07:53:00 -28.6 Dark Down 16.8 139.9 Really Low 07:42:57 - 08:03:03 4096
Klamath Falls 07:53:06 -29.5 Dark Down 17.2 139.0 Really Low 07:43:03 - 08:03:09 4092
Tulelake 07:53:05 -29.8 Dark Down 17.5 139.2 Really Low 07:43:02 - 08:03:08 4081
Paisley 07:52:59 -29.1 Dark Down 17.4 140.1 Really Low 07:42:56 - 08:03:02 4078
Lakeview 07:53:02 -29.7 Dark Down 17.9 140.2 Really Low 07:42:59 - 08:03:05 4063
Fall River/Burney 07:53:09 -30.7 Dark Down 18.3 139.1 Really Low 07:43:06 - 08:03:12 4058
Cedarville 07:53:03 -30.3 Dark Down 18.5 140.2 Really Low 07:43:00 - 08:03:06 4045
Susanville 07:53:08 -31.4 Dark Down 19.1 139.6 Really Low 07:43:05 - 08:03:11 4028
Greenville 07:53:10 -31.7 Dark Down 19.2 139.2 Really Low 07:43:07 - 08:03:13 4027
Gimple 07:53:10 -31.7 Dark Down 19.2 139.3 Really Low 07:43:07 - 08:03:13 4025
Quincy 07:53:10 -31.9 Dark Down 19.3 139.2 Really Low 07:43:07 - 08:03:13 4022
Portola 07:53:11 -32.0 Dark Down 19.7 139.6 Really Low 07:43:08 - 08:03:14 4009
Reno 07:53:09 -32.3 Dark Down 20.2 140.1 Low 07:43:06 - 08:03:12 3988
Carson City 07:53:10 -32.7 Dark Down 20.5 140.0 Low 07:43:07 - 08:03:13 3978
Gardnerville 07:53:11 -32.9 Dark Down 20.7 140.0 Low 07:43:08 - 08:03:14 3970
Yerington 07:53:09 -32.9 Dark Down 20.9 140.5 Low 07:43:06 - 08:03:12 3958
Hawthorne 07:53:08 -33.4 Dark Down 21.6 140.8 Low 07:43:05 - 08:03:11 3933
Lee Vining 07:53:12 -33.9 Dark Down 21.8 140.3 Low 07:43:09 - 08:03:15 3928
Bishop 07:53:12 -34.6 Dark Down 22.6 140.8 Low 07:43:09 - 08:03:15 3893
Tonopah 07:53:06 -33.9 Dark Down 22.6 141.9 Low 07:43:03 - 08:03:09 3886
CPSLO 07:53:26 -36.5 Dark Down 23.0 138.3 Low 07:43:23 - 08:03:29 3876
Lone Pine 07:53:14 -35.3 Dark Down 23.3 140.8 Low 07:43:11 - 08:03:17 3860
Beatty 07:53:08 -35.0 Dark Down 23.8 142.0 Low 07:43:05 - 08:03:11 3838
Indian Springs 07:53:06 -35.4 Dark Down 24.5 142.9 Low 07:43:03 - 08:03:09 3799
Wildwood 07:53:22 -37.8 Dark Down 25.0 139.7 Low 07:43:19 - 08:03:25 3786
Henderson 07:53:05 -35.9 Dark Down 25.3 143.4 Low 07:43:02 - 08:03:08 3762
Searchlight/Boulder City 07:53:08 -36.5 Dark Down 25.8 143.3 Low 07:43:05 - 08:03:11 3741
Idyllwild 07:53:18 -38.2 Dark Down 26.3 141.2 Low 07:43:15 - 08:03:21 3725
Laughlin/Bullhead City 07:53:08 -36.7 Dark Down 26.2 143.5 Low 07:43:05 - 08:03:11 3720
Patrick 07:53:04 -36.5 Dark Down 26.3 144.2 Low 07:43:01 - 08:03:07 3710
Mohave Valley 07:53:06 -37.0 Dark Down 26.4 143.4 Low 07:43:03 - 08:03:09 3710
Kingman/Dolan Springs 07:53:04 -36.7 Dark Down 26.4 144.0 Low 07:43:01 - 08:03:07 3707
Lake Havasu City 07:53:07 -37.4 Dark Down 26.9 143.5 Low 07:43:04 - 08:03:10 3688
DCO 07:53:01 -36.7 Dark Down 26.9 144.7 Low 07:42:58 - 08:03:04 3679
Parker 07:53:09 -37.8 Dark Down 27.2 143.5 Low 07:43:06 - 08:03:12 3674
Calipatria 07:53:16 -38.8 Dark Down 27.4 142.1 Low 07:43:13 - 08:03:19 3668
Blythe 07:53:12 -38.3 Dark Down 27.4 143.0 Low 07:43:09 - 08:03:15 3662
Yuma 07:53:14 -39.2 Dark Down 28.2 142.7 Low 07:43:11 - 08:03:17 3626
Niwot 07:52:19 -30.9 Dark Down 25.8 153.4 Low 07:42:16 - 08:02:22 3604

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 2017/08/05 16:42:15 UT

Marc W. Buie, Southwest Research Institute

RECON