RECON: TNO occultation with 10370

Event between (10370) Hylonome and star UC4-356-151684 with event index number of 130817

Geocentric closest approach at 2018/08/07 06:47:05 UTC

J2000 position of star is 18:34:02.0 -18:59:41
Equinox of date position of star is 18:35:01.8 -18:58:50
Stellar brightness R=15.6
Star is 159 degrees from the moon. Moon is 23% illuminated.
TNO apparent brightness V=22.5

[RECON map]
TNO is 24.1 AU from the Sun and 23.2 AU from the Earth.
The TNO is moving 17.5 km/sec on the sky relative to the star, or, 3.7 arcsec/hr.
The 1-sigma error in the time of the event is 1041 seconds.
The 1-sigma cross-track error in the shadow position is 2056 km.
The sky-plane scale is 16852.6 km/arcsec.

The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 6.6 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10370, (2018/08/07 06:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:33.0 -26:28:18  0.9 29.60 169
Nunki          18:56:25.0 -26:16:19  2.0  8.79 154
PPM 234652     18:32:31.7 -18:23:18  5.0  0.85 160
PPM 234682     18:33:34.8 -18:57:28  7.2  0.37 160
PPM 234737     18:35:53.3 -19:16:00  9.3  0.34 159
10370          18:35:07.6 -18:58:45 15.6       159
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 0.9 sigma about the mid-time.
The median site spacing is 14.0 km RECON observability=1.0 and success probability=6.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:45:03 -22.4 Dark Down 20.0 199.2 Really Low 06:30:03 - 07:00:03 4183
Tonasket 06:45:03 -22.6 Dark Down 20.2 199.2 Low 06:30:03 - 07:00:03 4172
Okanogan 06:45:03 -22.9 Dark Down 20.5 199.1 Low 06:30:03 - 07:00:03 4159
Brewster 06:45:04 -23.1 Dark Down 20.8 198.9 Low 06:30:04 - 07:00:04 4149
Manson/Chelan 06:45:05 -23.2 Dark Down 21.1 198.6 Low 06:30:05 - 07:00:05 4146
Entiat 06:45:05 -23.4 Dark Down 21.3 198.6 Low 06:30:05 - 07:00:05 4136
Wenatchee 06:45:05 -23.6 Dark Down 21.6 198.5 Low 06:30:05 - 07:00:05 4126
Ellensburg 06:45:06 -23.9 Dark Down 22.1 198.3 Low 06:30:06 - 07:00:06 4109
Yakima 06:45:05 -24.3 Dark Down 22.4 198.4 Low 06:30:05 - 07:00:05 4089
Toppenish/White Swan 06:45:04 -24.5 Dark Down 22.6 198.6 Low 06:30:04 - 07:00:04 4075
Goldendale 06:45:06 -24.9 Dark Down 23.2 198.2 Low 06:30:06 - 07:00:06 4055
The Dalles 06:45:07 -25.0 Dark Down 23.5 197.9 Low 06:30:07 - 07:00:07 4049
Pasco 06:44:59 -25.0 Dark Down 22.4 199.8 Low 06:29:59 - 06:59:59 4046
George/Umatilla 06:44:59 -25.2 Dark Down 22.8 199.7 Low 06:29:59 - 06:59:59 4033
PNWRO 06:44:58 -25.2 Dark Down 22.6 200.1 Low 06:29:58 - 06:59:58 4030
Maupin 06:45:06 -25.5 Dark Down 23.9 198.0 Low 06:30:06 - 07:00:06 4026
Madras/Culver 06:45:06 -25.9 Dark Down 24.4 198.1 Low 06:30:06 - 07:00:06 3998
Sisters 06:45:07 -26.1 Dark Down 24.8 197.7 Low 06:30:07 - 07:00:07 3989
Redmond 06:45:06 -26.3 Dark Down 24.8 198.1 Low 06:30:06 - 07:00:06 3980
Bend 06:45:06 -26.4 Dark Down 25.0 198.0 Low 06:30:06 - 07:00:06 3971
Oregon Observatory 06:45:07 -26.5 Dark Down 25.2 197.9 Low 06:30:07 - 07:00:07 3964
La Pine/Gilchrist 06:45:07 -26.7 Dark Down 25.4 197.8 Low 06:30:07 - 07:00:07 3954
North Lake 06:45:03 -27.3 Dark Down 25.7 198.5 Low 06:30:03 - 07:00:03 3919
Chiloquin 06:45:07 -27.6 Dark Down 26.6 197.6 Low 06:30:07 - 07:00:07 3899
Paisley 06:45:01 -27.9 Dark Down 26.1 198.9 Low 06:30:01 - 07:00:01 3882
Klamath Falls 06:45:07 -28.0 Dark Down 26.9 197.8 Low 06:30:07 - 07:00:07 3878
Tulelake 06:45:04 -28.3 Dark Down 27.0 198.1 Low 06:30:04 - 07:00:04 3857
Lakeview 06:44:59 -28.4 Dark Down 26.6 199.2 Low 06:29:59 - 06:59:59 3849
Cedarville 06:44:58 -29.1 Dark Down 27.1 199.5 Low 06:29:58 - 06:59:58 3808
Fall River/Burney 06:45:04 -29.2 Dark Down 27.9 198.3 Low 06:30:04 - 07:00:04 3802
Susanville 06:45:00 -30.0 Dark Down 28.3 199.2 Low 06:30:00 - 07:00:00 3751
Greenville 06:45:02 -30.1 Dark Down 28.6 199.0 Low 06:30:02 - 07:00:02 3740
Gimple 06:45:00 -30.1 Dark Down 28.6 199.0 Low 06:30:00 - 07:00:00 3738
Quincy 06:45:01 -30.3 Dark Down 28.8 199.0 Low 06:30:01 - 07:00:01 3727
Portola 06:44:58 -30.6 Dark Down 28.8 199.5 Low 06:29:58 - 06:59:58 3711
Reno 06:44:55 -31.0 Dark Down 28.9 200.2 Low 06:29:55 - 06:59:55 3682
Carson City 06:44:55 -31.3 Dark Down 29.3 200.3 Low 06:29:55 - 06:59:55 3659
Gardnerville 06:44:55 -31.6 Dark Down 29.5 200.4 Low 06:29:55 - 06:59:55 3643
Yerington 06:44:52 -31.7 Dark Down 29.3 201.0 Low 06:29:52 - 06:59:52 3634
Hawthorne 06:44:49 -32.3 Dark Down 29.6 201.6 Low 06:29:49 - 06:59:49 3594
Lee Vining 06:44:51 -32.7 Dark Down 30.2 201.2 Up 06:29:51 - 06:59:51 3568
Tonopah 06:44:42 -33.1 Dark Down 29.6 203.2 Low 06:29:42 - 06:59:42 3535
Bishop 06:44:47 -33.4 Dark Down 30.6 202.1 Up 06:29:47 - 06:59:47 3514
Lone Pine 06:44:45 -34.2 Dark Down 31.2 202.6 Up 06:29:45 - 06:59:45 3456
Beatty 06:44:39 -34.3 Dark Down 30.5 203.9 Up 06:29:39 - 06:59:39 3448
CPSLO 06:44:56 -34.6 Dark Down 33.1 200.2 Up 06:29:56 - 06:59:56 3423
Indian Springs 06:44:34 -34.9 Dark Down 30.4 205.0 Up 06:29:34 - 06:59:34 3403
Niwot 06:43:55 -33.2 Dark Down 23.4 214.2 Low 06:28:55 - 06:58:55 3392
Henderson 06:44:30 -35.6 Dark Down 30.7 205.9 Up 06:29:30 - 06:59:30 3351
Searchlight/Boulder City 06:44:30 -36.1 Dark Down 31.2 206.1 Up 06:29:30 - 06:59:30 3310
Wildwood 06:44:46 -36.4 Dark Down 33.7 202.7 Up 06:29:46 - 06:59:46 3296
Patrick 06:44:26 -36.5 Dark Down 30.8 207.2 Up 06:29:26 - 06:59:26 3282
Laughlin/Bullhead City 06:44:27 -36.5 Dark Down 31.3 206.5 Up 06:29:27 - 06:59:27 3281
Kingman/Dolan Springs 06:44:26 -36.6 Dark Down 31.1 207.0 Up 06:29:26 - 06:59:26 3271
Mohave Valley 06:44:27 -36.8 Dark Down 31.6 206.6 Up 06:29:27 - 06:59:27 3262
DCO 06:44:22 -36.9 Dark Down 30.9 207.9 Up 06:29:22 - 06:59:22 3244
Idyllwild 06:44:36 -37.3 Dark Down 33.4 204.7 Up 06:29:36 - 06:59:36 3230
Lake Havasu City 06:44:27 -37.2 Dark Down 31.8 207.0 Up 06:29:27 - 06:59:27 3228
Parker 06:44:26 -37.6 Dark Down 32.1 207.1 Up 06:29:26 - 06:59:26 3202
Blythe 06:44:27 -38.0 Dark Down 32.7 206.9 Up 06:29:27 - 06:59:27 3172
Calipatria 06:44:30 -38.2 Dark Down 33.5 206.1 Up 06:29:30 - 06:59:30 3158
Yuma 06:44:27 -38.9 Dark Down 33.6 207.2 Up 06:29:27 - 06:59:27 3106

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 10370, (2018/08/07 06:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9 29.60 169
Nunki          18:55:15.9 -26:17:49  2.0  8.79 154
PPM 234652     18:31:26.3 -18:24:10  5.0  0.85 160
PPM 234682     18:32:29.2 -18:58:22  7.2  0.37 160
PPM 234737     18:34:47.6 -19:16:58  9.3  0.34 159
10370          18:34:02.0 -18:59:41 15.6       159
Positions are for J2000

Event circumstances last updated at 2016/12/11 17:31:14 UT

Marc W. Buie, Southwest Research Institute

RECON