RECON: TNO occultation with 10370

Event between (10370) Hylonome and star UC4-357-168190 with event index number of 196530

Geocentric closest approach at 2019/06/13 10:24:33 UTC

J2000 position of star is 18:54:23.8 -18:38:45
Equinox of date position of star is 18:55:26.7 -18:37:20
Stellar brightness R=14.1, use SENSEUP=64
Star is 69 degrees from the moon. Moon is 83% illuminated.
TNO apparent brightness V=22.5

[RECON map]
TNO is 24.3 AU from the Sun and 23.4 AU from the Earth.
The TNO is moving 21.4 km/sec on the sky relative to the star, or, 4.5 arcsec/hr.
The 1-sigma error in the time of the event is 957 seconds.
The 1-sigma cross-track error in the shadow position is 4311 km.
The sky-plane scale is 16956.6 km/arcsec.

The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 5.4 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10370, (2019/06/13 10:25UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.2 -26:28:25  0.9 34.25  37
Nunki          18:56:28.2 -26:16:15  2.0  7.65  69
PPM 235314     19:00:32.4 -19:15:05  6.5  1.34  70
PPM 235159     18:54:04.2 -18:14:03  7.6  0.52  69
PPM 235172     18:54:29.1 -18:45:40  8.6  0.29  69
10370          18:55:32.1 -18:37:13 14.1        69
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 17.5 km RECON observability=0.7 and success probability=1.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 10:23:29 -10.9 CT Down 21.2 194.5 Low 10:08:29 - 10:38:29 10744
Tonasket 10:23:29 -11.1 CT Down 21.5 194.5 Low 10:08:29 - 10:38:29 10733
Okanogan 10:23:29 -11.4 CT Down 21.8 194.4 Low 10:08:29 - 10:38:29 10720
Brewster 10:23:29 -11.7 CT Down 22.1 194.3 Low 10:08:29 - 10:38:29 10709
Manson/Chelan 10:23:30 -12.0 AT Down 22.4 193.9 Low 10:08:30 - 10:38:30 10704
Entiat 10:23:31 -12.2 AT Down 22.6 193.9 Low 10:08:31 - 10:38:31 10694
Wenatchee 10:23:30 -12.5 AT Down 22.9 193.8 Low 10:08:30 - 10:38:30 10683
Ellensburg 10:23:31 -12.9 AT Down 23.3 193.6 Low 10:08:31 - 10:38:31 10666
Yakima 10:23:31 -13.2 AT Down 23.7 193.6 Low 10:08:31 - 10:38:31 10647
Toppenish/White Swan 10:23:30 -13.4 AT Down 23.9 193.8 Low 10:08:30 - 10:38:30 10634
Pasco 10:23:26 -13.0 AT Down 23.8 195.1 Low 10:08:26 - 10:38:26 10615
Goldendale 10:23:31 -14.0 AT Down 24.5 193.4 Low 10:08:31 - 10:38:31 10612
The Dalles 10:23:32 -14.3 AT Down 24.8 193.1 Low 10:08:32 - 10:38:32 10604
George/Umatilla 10:23:27 -13.3 AT Down 24.1 194.9 Low 10:08:27 - 10:38:27 10601
PNWRO 10:23:25 -13.1 AT Down 24.0 195.4 Low 10:08:25 - 10:38:25 10600
Maupin 10:23:32 -14.6 AT Down 25.1 193.3 Low 10:08:32 - 10:38:32 10582
Madras/Culver 10:23:31 -15.1 AT Down 25.7 193.3 Low 10:08:31 - 10:38:31 10554
Sisters 10:23:33 -15.6 AT Down 26.1 192.8 Low 10:08:33 - 10:38:33 10542
Redmond 10:23:32 -15.4 AT Down 26.0 193.3 Low 10:08:32 - 10:38:32 10536
Bend 10:23:32 -15.7 AT Down 26.3 193.1 Low 10:08:32 - 10:38:32 10527
Oregon Observatory 10:23:33 -15.9 AT Down 26.5 193.0 Low 10:08:33 - 10:38:33 10519
La Pine/Gilchrist 10:23:32 -16.1 AT Down 26.7 193.0 Low 10:08:32 - 10:38:32 10509
North Lake 10:23:30 -16.2 AT Down 27.0 193.6 Low 10:08:30 - 10:38:30 10479
Chiloquin 10:23:33 -17.1 AT Up 27.8 192.7 Low 10:08:33 - 10:38:33 10452
Paisley 10:23:29 -16.5 AT Down 27.5 194.1 Low 10:08:29 - 10:38:29 10445
Klamath Falls 10:23:33 -17.4 AT Up 28.1 192.9 Low 10:08:33 - 10:38:33 10433
Lakeview 10:23:27 -16.8 AT Down 27.9 194.4 Low 10:08:27 - 10:38:27 10415
Tulelake 10:23:31 -17.5 AT Up 28.3 193.2 Low 10:08:31 - 10:38:31 10414
Cedarville 10:23:26 -17.3 AT Down 28.5 194.6 Low 10:08:26 - 10:38:26 10376
Fall River/Burney 10:23:30 -18.2 Dark Up 29.2 193.4 Low 10:08:30 - 10:38:30 10362
Susanville 10:23:27 -18.4 Dark Down 29.7 194.3 Low 10:08:27 - 10:38:27 10317
Greenville 10:23:29 -18.8 Dark Down 30.0 194.0 Up 10:08:29 - 10:38:29 10304
Gimple 10:23:28 -18.8 Dark Down 30.0 194.1 Up 10:08:28 - 10:38:28 10303
Quincy 10:23:29 -19.0 Dark Up 30.2 194.0 Up 10:08:29 - 10:38:29 10292
Portola 10:23:26 -18.9 Dark Down 30.3 194.5 Up 10:08:26 - 10:38:26 10279
Reno 10:23:24 -18.8 Dark Down 30.4 195.3 Up 10:08:24 - 10:38:24 10256
Carson City 10:23:23 -19.1 Dark Down 30.7 195.4 Up 10:08:23 - 10:38:23 10234
Gardnerville 10:23:23 -19.3 Dark Down 31.0 195.4 Up 10:08:23 - 10:38:23 10219
Yerington 10:23:21 -19.0 Dark Down 30.8 196.1 Up 10:08:21 - 10:38:21 10215
Hawthorne 10:23:19 -19.1 Dark Down 31.1 196.7 Up 10:08:19 - 10:38:19 10180
Lee Vining 10:23:20 -19.8 Dark Down 31.8 196.3 Up 10:08:20 - 10:38:20 10150
Tonopah 10:23:13 -18.8 Dark Down 31.2 198.3 Up 10:08:13 - 10:38:13 10132
Bishop 10:23:17 -19.9 Dark Down 32.2 197.2 Up 10:08:17 - 10:38:17 10104
Niwot 10:22:31 -11.2 CT Down 25.6 209.9 Low 10:07:31 - 10:37:31 10076
Beatty 10:23:11 -19.5 Dark Down 32.2 199.0 Up 10:08:11 - 10:38:11 10053
Lone Pine 10:23:16 -20.4 Dark Down 32.8 197.7 Up 10:08:16 - 10:38:16 10050
Indian Springs 10:23:06 -19.3 Dark Down 32.2 200.2 Up 10:08:06 - 10:38:06 10016
CPSLO 10:23:25 -22.7 Dark Up 34.6 195.1 Up 10:08:25 - 10:38:25 9997
Henderson 10:23:03 -19.3 Dark Down 32.5 201.0 Up 10:08:03 - 10:38:03 9971
Searchlight/Boulder City 10:23:02 -19.7 Dark Down 33.1 201.2 Up 10:08:02 - 10:38:02 9932
Patrick 10:22:58 -19.2 Dark Down 32.8 202.4 Up 10:07:58 - 10:37:58 9913
Laughlin/Bullhead City 10:23:01 -19.8 Dark Down 33.2 201.7 Up 10:08:01 - 10:38:01 9907
Kingman/Dolan Springs 10:22:59 -19.5 Dark Down 33.1 202.2 Up 10:07:59 - 10:37:59 9901
Wildwood 10:23:16 -22.7 Dark Down 35.3 197.6 Up 10:08:16 - 10:38:16 9890
Mohave Valley 10:23:00 -20.0 Dark Down 33.5 201.7 Up 10:08:00 - 10:38:00 9888
DCO 10:22:55 -19.1 Dark Down 32.9 203.2 Up 10:07:55 - 10:37:55 9881
Lake Havasu City 10:22:59 -20.2 Dark Down 33.8 202.1 Up 10:07:59 - 10:37:59 9857
Idyllwild 10:23:08 -22.0 Dark Down 35.2 199.7 Up 10:08:08 - 10:38:08 9839
Parker 10:22:59 -20.4 Dark Down 34.1 202.2 Up 10:07:59 - 10:37:59 9832
Blythe 10:23:00 -21.0 Dark Down 34.7 202.0 Up 10:08:00 - 10:38:00 9800
Calipatria 10:23:03 -21.9 Dark Down 35.4 201.2 Up 10:08:03 - 10:38:03 9780
Yuma 10:23:00 -21.7 Dark Down 35.5 202.2 Up 10:08:00 - 10:38:00 9736

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, (2019/06/13 10:25UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 34.25  37
Nunki          18:55:15.9 -26:17:49  2.0  7.65  69
PPM 235314     18:59:23.9 -19:16:46  6.5  1.34  70
PPM 235159     18:52:56.0 -18:15:33  7.6  0.52  69
PPM 235172     18:53:20.7 -18:47:11  8.6  0.29  69
10370          18:54:23.8 -18:38:45 14.1        69
Positions are for J2000

Event circumstances last updated at 2017/12/06 19:01:46 UT

Marc W. Buie, Southwest Research Institute

RECON