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 06:47:06 UTC

J2000 position of star is 18:34:02.0 -18:59:41
Equinox of date position of star is 18:35:05.3 -18:58:47
Stellar brightness R=15.6, use SENSEUP=128
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 1179 seconds.
The 1-sigma cross-track error in the shadow position is 2285 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 0.8 sigma about the mid-time.
The median site spacing is 13.8 km RECON observability=1.0 and success probability=7.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:45:04 -22.4 Dark Down 20.0 199.2 Really Low 06:30:04 - 07:00:04 4188
Tonasket 06:45:04 -22.6 Dark Down 20.2 199.2 Low 06:30:04 - 07:00:04 4177
Okanogan 06:45:04 -22.9 Dark Down 20.5 199.1 Low 06:30:04 - 07:00:04 4164
Brewster 06:45:05 -23.1 Dark Down 20.8 199.0 Low 06:30:05 - 07:00:05 4154
Manson/Chelan 06:45:06 -23.2 Dark Down 21.1 198.6 Low 06:30:06 - 07:00:06 4151
Entiat 06:45:06 -23.4 Dark Down 21.3 198.6 Low 06:30:06 - 07:00:06 4141
Wenatchee 06:45:06 -23.6 Dark Down 21.6 198.5 Low 06:30:06 - 07:00:06 4130
Ellensburg 06:45:06 -23.9 Dark Down 22.1 198.3 Low 06:30:06 - 07:00:06 4114
Yakima 06:45:06 -24.3 Dark Down 22.4 198.4 Low 06:30:06 - 07:00:06 4094
Toppenish/White Swan 06:45:05 -24.5 Dark Down 22.6 198.6 Low 06:30:05 - 07:00:05 4080
Goldendale 06:45:07 -24.9 Dark Down 23.2 198.2 Low 06:30:07 - 07:00:07 4060
The Dalles 06:45:08 -25.0 Dark Down 23.5 197.9 Low 06:30:08 - 07:00:08 4054
Pasco 06:45:00 -25.0 Dark Down 22.4 199.8 Low 06:30:00 - 07:00:00 4051
George/Umatilla 06:45:00 -25.2 Dark Down 22.8 199.7 Low 06:30:00 - 07:00:00 4038
PNWRO 06:44:59 -25.2 Dark Down 22.6 200.1 Low 06:29:59 - 06:59:59 4035
Maupin 06:45:07 -25.5 Dark Down 23.9 198.1 Low 06:30:07 - 07:00:07 4031
Madras/Culver 06:45:07 -25.9 Dark Down 24.4 198.1 Low 06:30:07 - 07:00:07 4003
Sisters 06:45:08 -26.1 Dark Down 24.8 197.7 Low 06:30:08 - 07:00:08 3993
Redmond 06:45:07 -26.3 Dark Down 24.8 198.1 Low 06:30:07 - 07:00:07 3984
Bend 06:45:07 -26.4 Dark Down 25.0 198.0 Low 06:30:07 - 07:00:07 3975
Oregon Observatory 06:45:07 -26.5 Dark Down 25.2 197.9 Low 06:30:07 - 07:00:07 3968
La Pine/Gilchrist 06:45:07 -26.7 Dark Down 25.4 197.8 Low 06:30:07 - 07:00:07 3958
North Lake 06:45:04 -27.3 Dark Down 25.7 198.5 Low 06:30:04 - 07:00:04 3923
Chiloquin 06:45:08 -27.6 Dark Down 26.5 197.6 Low 06:30:08 - 07:00:08 3903
Paisley 06:45:02 -27.9 Dark Down 26.1 198.9 Low 06:30:02 - 07:00:02 3886
Klamath Falls 06:45:07 -28.0 Dark Down 26.9 197.8 Low 06:30:07 - 07:00:07 3882
Tulelake 06:45:06 -28.3 Dark Down 27.0 198.1 Low 06:30:06 - 07:00:06 3861
Lakeview 06:45:01 -28.4 Dark Down 26.6 199.2 Low 06:30:01 - 07:00:01 3854
Cedarville 06:44:59 -29.1 Dark Down 27.1 199.5 Low 06:29:59 - 06:59:59 3812
Fall River/Burney 06:45:05 -29.2 Dark Down 27.9 198.3 Low 06:30:05 - 07:00:05 3807
Susanville 06:45:01 -30.0 Dark Down 28.3 199.2 Low 06:30:01 - 07:00:01 3755
Greenville 06:45:03 -30.1 Dark Down 28.6 199.0 Low 06:30:03 - 07:00:03 3744
Gimple 06:45:02 -30.1 Dark Down 28.6 199.0 Low 06:30:02 - 07:00:02 3743
Quincy 06:45:02 -30.3 Dark Down 28.8 199.0 Low 06:30:02 - 07:00:02 3732
Portola 06:45:00 -30.6 Dark Down 28.8 199.5 Low 06:30:00 - 07:00:00 3715
Reno 06:44:57 -31.0 Dark Down 28.9 200.2 Low 06:29:57 - 06:59:57 3686
Carson City 06:44:56 -31.3 Dark Down 29.3 200.3 Low 06:29:56 - 06:59:56 3664
Gardnerville 06:44:56 -31.6 Dark Down 29.5 200.4 Low 06:29:56 - 06:59:56 3647
Yerington 06:44:53 -31.7 Dark Down 29.3 201.0 Low 06:29:53 - 06:59:53 3639
Hawthorne 06:44:51 -32.3 Dark Down 29.5 201.6 Low 06:29:51 - 06:59:51 3599
Lee Vining 06:44:52 -32.7 Dark Down 30.2 201.2 Up 06:29:52 - 06:59:52 3573
Tonopah 06:44:44 -33.1 Dark Down 29.6 203.2 Low 06:29:44 - 06:59:44 3539
Bishop 06:44:49 -33.4 Dark Down 30.6 202.1 Up 06:29:49 - 06:59:49 3519
Lone Pine 06:44:47 -34.2 Dark Down 31.2 202.6 Up 06:29:47 - 06:59:47 3462
Beatty 06:44:41 -34.3 Dark Down 30.5 203.9 Up 06:29:41 - 06:59:41 3454
CPSLO 06:44:58 -34.6 Dark Down 33.1 200.2 Up 06:29:58 - 06:59:58 3429
Indian Springs 06:44:36 -34.9 Dark Down 30.4 205.1 Up 06:29:36 - 06:59:36 3408
Niwot 06:43:56 -33.2 Dark Down 23.4 214.2 Low 06:28:56 - 06:58:56 3397
Henderson 06:44:32 -35.6 Dark Down 30.7 205.9 Up 06:29:32 - 06:59:32 3357
Searchlight/Boulder City 06:44:32 -36.1 Dark Down 31.2 206.1 Up 06:29:32 - 06:59:32 3316
Wildwood 06:44:48 -36.4 Dark Down 33.7 202.7 Up 06:29:48 - 06:59:48 3302
Patrick 06:44:27 -36.5 Dark Down 30.8 207.2 Up 06:29:27 - 06:59:27 3288
Laughlin/Bullhead City 06:44:30 -36.5 Dark Down 31.3 206.5 Up 06:29:30 - 06:59:30 3287
Kingman/Dolan Springs 06:44:27 -36.6 Dark Down 31.1 207.0 Up 06:29:27 - 06:59:27 3277
Mohave Valley 06:44:29 -36.8 Dark Down 31.6 206.6 Up 06:29:29 - 06:59:29 3268
DCO 06:44:23 -36.9 Dark Down 30.9 207.9 Up 06:29:23 - 06:59:23 3250
Idyllwild 06:44:38 -37.3 Dark Down 33.4 204.7 Up 06:29:38 - 06:59:38 3235
Lake Havasu City 06:44:27 -37.2 Dark Down 31.8 207.0 Up 06:29:27 - 06:59:27 3234
Parker 06:44:27 -37.6 Dark Down 32.1 207.1 Up 06:29:27 - 06:59:27 3209
Blythe 06:44:28 -38.0 Dark Down 32.7 206.9 Up 06:29:28 - 06:59:28 3178
Calipatria 06:44:32 -38.2 Dark Down 33.5 206.1 Up 06:29:32 - 06:59:32 3165
Yuma 06:44:27 -38.9 Dark Down 33.6 207.2 Up 06:29:27 - 06:59:27 3112

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 -26:25:56  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 2017/12/05 18:51:46 UT

Marc W. Buie, Southwest Research Institute

RECON