RECON: TNO occultation with 10370

Event between (10370) Hylonome and star UC4-356-157262 with event index number of 126944

Geocentric closest approach at 2018/06/23 07:18:36 UTC

J2000 position of star is 18:39:54.5 -18:51:58
Equinox of date position of star is 18:40:54.2 -18:50:59
Stellar brightness R=16.3
Star is 63 degrees from the moon. Moon is 78% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 24.0 AU from the Sun and 23.0 AU from the Earth.
The TNO is moving 23.0 km/sec on the sky relative to the star, or, 5.0 arcsec/hr.
The 1-sigma error in the time of the event is 778 seconds.
The 1-sigma cross-track error in the shadow position is 2938 km.
The sky-plane scale is 16691.4 km/arcsec.

The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 5.0 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10370, (2018/06/23 07:19UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:32.6 -26:28:17  0.9 30.95  35
Nunki          18:56:24.6 -26:16:20  2.0  8.23  66
PPM 234930     18:44:00.4 -19:15:54  6.1  0.83  63
PPM 234838     18:39:58.6 -19:05:15  8.2  0.34  63
PPM 234850     18:40:34.2 -18:39:17  9.1  0.22  63
10370          18:40:59.6 -18:50:53 16.3        63
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 1.2 sigma about the mid-time.
The median site spacing is 12.3 km RECON observability=1.0 and success probability=0.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 07:19:17 -17.1 AT Up 20.3 161.7 Low 07:04:17 - 07:34:17 9552
Tonasket 07:19:18 -17.3 AT Up 20.5 161.6 Low 07:04:18 - 07:34:18 9542
Okanogan 07:19:18 -17.6 AT Up 20.8 161.4 Low 07:04:18 - 07:34:18 9527
Brewster 07:19:19 -17.9 AT Up 21.0 161.2 Low 07:04:19 - 07:34:19 9515
Manson/Chelan 07:19:20 -18.0 Dark Up 21.1 160.8 Low 07:04:20 - 07:34:20 9505
Entiat 07:19:21 -18.2 Dark Up 21.3 160.7 Low 07:04:21 - 07:34:21 9495
Wenatchee 07:19:21 -18.5 Dark Up 21.5 160.6 Low 07:04:21 - 07:34:21 9483
Ellensburg 07:19:22 -18.9 Dark Up 21.9 160.3 Low 07:04:22 - 07:34:22 9464
Yakima 07:19:23 -19.2 Dark Up 22.3 160.3 Low 07:04:23 - 07:34:23 9445
Toppenish/White Swan 07:19:23 -19.5 Dark Up 22.5 160.4 Low 07:04:23 - 07:34:23 9436
Pasco 07:19:19 -19.8 Dark Up 22.9 161.6 Low 07:04:19 - 07:34:19 9434
PNWRO 07:19:19 -20.0 Dark Up 23.2 161.8 Low 07:04:19 - 07:34:19 9424
George/Umatilla 07:19:20 -20.1 Dark Up 23.2 161.4 Low 07:04:20 - 07:34:20 9418
Goldendale 07:19:25 -20.0 Dark Up 22.9 159.9 Low 07:04:25 - 07:34:25 9408
The Dalles 07:19:26 -20.1 Dark Up 23.1 159.5 Low 07:04:26 - 07:34:26 9396
Maupin 07:19:27 -20.6 Dark Up 23.5 159.6 Low 07:04:27 - 07:34:27 9377
Madras/Culver 07:19:27 -21.1 Dark Up 24.0 159.4 Low 07:04:27 - 07:34:27 9350
Redmond 07:19:28 -21.4 Dark Up 24.3 159.3 Low 07:04:28 - 07:34:28 9332
Sisters 07:19:29 -21.4 Dark Up 24.2 158.9 Low 07:04:29 - 07:34:29 9332
Bend 07:19:29 -21.6 Dark Up 24.5 159.2 Low 07:04:29 - 07:34:29 9321
Oregon Observatory 07:19:29 -21.8 Dark Up 24.6 159.0 Low 07:04:29 - 07:34:29 9312
La Pine/Gilchrist 07:19:30 -22.0 Dark Up 24.8 158.9 Low 07:04:30 - 07:34:30 9301
North Lake 07:19:28 -22.5 Dark Up 25.3 159.4 Low 07:04:28 - 07:34:28 9281
Paisley 07:19:28 -23.1 Dark Up 25.9 159.7 Low 07:04:28 - 07:34:28 9254
Chiloquin 07:19:33 -23.0 Dark Up 25.7 158.4 Low 07:04:33 - 07:34:33 9242
Lakeview 07:19:28 -23.6 Dark Up 26.5 159.8 Low 07:04:28 - 07:34:28 9228
Klamath Falls 07:19:33 -23.4 Dark Up 26.1 158.4 Low 07:04:33 - 07:34:33 9224
Tulelake 07:19:32 -23.7 Dark Up 26.4 158.7 Low 07:04:32 - 07:34:32 9211
Cedarville 07:19:27 -24.3 Dark Up 27.1 159.9 Low 07:04:27 - 07:34:27 9193
Fall River/Burney 07:19:33 -24.6 Dark Up 27.3 158.6 Low 07:04:33 - 07:34:33 9161
Susanville 07:19:31 -25.3 Dark Up 28.0 159.2 Low 07:04:31 - 07:34:31 9129
Niwot 07:18:36 -26.4 Dark Up 30.9 175.5 Up 07:03:36 - 07:33:36 9119
Gimple 07:19:32 -25.5 Dark Up 28.2 158.9 Low 07:04:32 - 07:34:32 9112
Greenville 07:19:32 -25.5 Dark Up 28.2 158.9 Low 07:04:32 - 07:34:32 9112
Quincy 07:19:32 -25.7 Dark Up 28.4 158.8 Low 07:04:32 - 07:34:32 9101
Portola 07:19:31 -25.9 Dark Up 28.7 159.3 Low 07:04:31 - 07:34:31 9096
Reno 07:19:29 -26.3 Dark Up 29.1 159.9 Low 07:04:29 - 07:34:29 9083
Carson City 07:19:30 -26.6 Dark Up 29.4 159.9 Low 07:04:30 - 07:34:30 9062
Yerington 07:19:27 -26.9 Dark Up 29.8 160.5 Low 07:04:27 - 07:34:27 9053
Gardnerville 07:19:30 -26.9 Dark Up 29.7 159.9 Low 07:04:30 - 07:34:30 9048
Hawthorne 07:19:26 -27.4 Dark Up 30.3 160.9 Up 07:04:26 - 07:34:26 9027
Tonopah 07:19:21 -28.1 Dark Up 31.1 162.3 Up 07:04:21 - 07:34:21 9004
Lee Vining 07:19:28 -27.9 Dark Up 30.8 160.3 Up 07:04:28 - 07:34:28 8992
Bishop 07:19:26 -28.6 Dark Up 31.5 161.0 Up 07:04:26 - 07:34:26 8958
Beatty 07:19:21 -29.3 Dark Up 32.4 162.6 Up 07:04:21 - 07:34:21 8933
Indian Springs 07:19:18 -29.7 Dark Up 32.9 163.7 Up 07:04:18 - 07:34:18 8915
Lone Pine 07:19:26 -29.4 Dark Up 32.3 161.2 Up 07:04:26 - 07:34:26 8911
Henderson 07:19:16 -30.3 Dark Up 33.6 164.4 Up 07:04:16 - 07:34:16 8882
Searchlight/Boulder City 07:19:16 -30.9 Dark Up 34.1 164.3 Up 07:04:16 - 07:34:16 8846
Patrick 07:19:12 -31.0 Dark Up 34.4 165.5 Up 07:04:12 - 07:34:12 8844
Kingman/Dolan Springs 07:19:13 -31.2 Dark Up 34.6 165.2 Up 07:04:13 - 07:34:13 8829
Laughlin/Bullhead City 07:19:15 -31.2 Dark Up 34.5 164.7 Up 07:04:15 - 07:34:15 8827
DCO 07:19:09 -31.4 Dark Up 34.9 166.2 Up 07:04:09 - 07:34:09 8825
CPSLO 07:19:37 -30.3 Dark Up 32.8 158.1 Up 07:04:37 - 07:34:37 8818
Mohave Valley 07:19:15 -31.5 Dark Up 34.8 164.6 Up 07:04:15 - 07:34:15 8809
Lake Havasu City 07:19:15 -31.9 Dark Up 35.2 164.8 Up 07:04:15 - 07:34:15 8783
Parker 07:19:15 -32.2 Dark Up 35.6 164.8 Up 07:04:15 - 07:34:15 8760
Wildwood 07:19:31 -31.8 Dark Up 34.5 160.0 Up 07:04:31 - 07:34:31 8747
Idyllwild 07:19:24 -32.4 Dark Up 35.4 162.0 Up 07:04:24 - 07:34:24 8729
Blythe 07:19:16 -32.7 Dark Up 36.0 164.4 Up 07:04:16 - 07:34:16 8724
Calipatria 07:19:20 -33.1 Dark Up 36.3 163.2 Up 07:04:20 - 07:34:20 8690
Yuma 07:19:16 -33.7 Dark Up 36.9 164.1 Up 07:04:16 - 07:34:16 8662

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, (2018/06/23 07:19UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9 30.95  35
Nunki          18:55:15.9 -26:17:49  2.0  8.23  66
PPM 234930     18:42:55.1 -19:17:04  6.1  0.83  63
PPM 234838     18:38:53.4 -19:06:18  8.2  0.34  63
PPM 234850     18:39:29.2 -18:40:21  9.1  0.22  63
10370          18:39:54.5 -18:51:58 16.3        63
Positions are for J2000

Event circumstances last updated at 2016/12/10 17:29:31 UT

Marc W. Buie, Southwest Research Institute

RECON