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 18:55:25.2 -18:37:22
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 1009 seconds.
The 1-sigma cross-track error in the shadow position is 4538 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 16.7 km RECON observability=0.7 and success probability=1.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 10:23:28 -10.9 CT Down 21.2 194.5 Low 10:08:28 - 10:38:28 10741
Tonasket 10:23:27 -11.1 CT Down 21.5 194.5 Low 10:08:27 - 10:38:27 10731
Okanogan 10:23:28 -11.4 CT Down 21.8 194.4 Low 10:08:28 - 10:38:28 10717
Brewster 10:23:29 -11.7 CT Down 22.1 194.3 Low 10:08:29 - 10:38:29 10707
Manson/Chelan 10:23:30 -12.0 AT Down 22.4 193.9 Low 10:08:30 - 10:38:30 10701
Entiat 10:23:30 -12.2 AT Down 22.6 193.9 Low 10:08:30 - 10:38:30 10691
Wenatchee 10:23:30 -12.5 AT Down 22.9 193.8 Low 10:08:30 - 10:38:30 10681
Ellensburg 10:23:30 -12.9 AT Down 23.3 193.6 Low 10:08:30 - 10:38:30 10663
Yakima 10:23:30 -13.3 AT Down 23.7 193.6 Low 10:08:30 - 10:38:30 10644
Toppenish/White Swan 10:23:29 -13.4 AT Down 23.9 193.8 Low 10:08:29 - 10:38:29 10632
Pasco 10:23:25 -13.0 AT Down 23.8 195.1 Low 10:08:25 - 10:38:25 10612
Goldendale 10:23:31 -14.0 AT Down 24.5 193.4 Low 10:08:31 - 10:38:31 10609
The Dalles 10:23:31 -14.3 AT Down 24.8 193.1 Low 10:08:31 - 10:38:31 10601
George/Umatilla 10:23:26 -13.3 AT Down 24.1 194.9 Low 10:08:26 - 10:38:26 10598
PNWRO 10:23:24 -13.1 AT Down 24.0 195.4 Low 10:08:24 - 10:38:24 10598
Maupin 10:23:31 -14.6 AT Down 25.1 193.2 Low 10:08:31 - 10:38:31 10579
Madras/Culver 10:23:31 -15.1 AT Down 25.7 193.3 Low 10:08:31 - 10:38:31 10552
Sisters 10:23:32 -15.6 AT Down 26.1 192.8 Low 10:08:32 - 10:38:32 10540
Redmond 10:23:31 -15.4 AT Down 26.0 193.3 Low 10:08:31 - 10:38:31 10534
Bend 10:23:31 -15.7 AT Down 26.3 193.1 Low 10:08:31 - 10:38:31 10525
Oregon Observatory 10:23:31 -15.9 AT Down 26.5 193.0 Low 10:08:31 - 10:38:31 10517
La Pine/Gilchrist 10:23:31 -16.1 AT Down 26.7 193.0 Low 10:08:31 - 10:38:31 10507
North Lake 10:23:30 -16.2 AT Down 27.0 193.6 Low 10:08:30 - 10:38:30 10477
Chiloquin 10:23:33 -17.1 AT Up 27.8 192.7 Low 10:08:33 - 10:38:33 10450
Paisley 10:23:27 -16.5 AT Down 27.5 194.1 Low 10:08:27 - 10:38:27 10443
Klamath Falls 10:23:31 -17.4 AT Up 28.1 192.9 Low 10:08:31 - 10:38:31 10431
Lakeview 10:23:27 -16.8 AT Down 27.9 194.3 Low 10:08:27 - 10:38:27 10413
Tulelake 10:23:31 -17.5 AT Up 28.3 193.2 Low 10:08:31 - 10:38:31 10412
Cedarville 10:23:26 -17.3 AT Down 28.5 194.6 Low 10:08:26 - 10:38:26 10374
Fall River/Burney 10:23:30 -18.2 Dark Up 29.2 193.4 Low 10:08:30 - 10:38:30 10360
Susanville 10:23:27 -18.4 Dark Down 29.7 194.3 Low 10:08:27 - 10:38:27 10315
Greenville 10:23:28 -18.8 Dark Down 30.0 194.0 Up 10:08:28 - 10:38:28 10302
Gimple 10:23:28 -18.8 Dark Down 30.0 194.1 Up 10:08:28 - 10:38:28 10301
Quincy 10:23:28 -19.0 Dark Up 30.2 194.0 Up 10:08:28 - 10:38:28 10290
Portola 10:23:26 -18.9 Dark Down 30.3 194.5 Up 10:08:26 - 10:38:26 10277
Reno 10:23:23 -18.8 Dark Down 30.4 195.3 Up 10:08:23 - 10:38:23 10254
Carson City 10:23:23 -19.1 Dark Down 30.7 195.4 Up 10:08:23 - 10:38:23 10232
Gardnerville 10:23:23 -19.3 Dark Down 31.0 195.4 Up 10:08:23 - 10:38:23 10216
Yerington 10:23:20 -19.0 Dark Down 30.8 196.1 Up 10:08:20 - 10:38:20 10212
Hawthorne 10:23:18 -19.1 Dark Down 31.1 196.7 Up 10:08:18 - 10:38:18 10177
Lee Vining 10:23:20 -19.8 Dark Down 31.8 196.3 Up 10:08:20 - 10:38:20 10149
Tonopah 10:23:12 -18.8 Dark Down 31.2 198.3 Up 10:08:12 - 10:38:12 10130
Bishop 10:23:16 -19.9 Dark Down 32.2 197.1 Up 10:08:16 - 10:38:16 10101
Niwot 10:22:30 -11.2 CT Down 25.6 209.9 Low 10:07:30 - 10:37:30 10073
Beatty 10:23:09 -19.5 Dark Down 32.2 199.0 Up 10:08:09 - 10:38:09 10049
Lone Pine 10:23:14 -20.4 Dark Down 32.8 197.6 Up 10:08:14 - 10:38:14 10047
Indian Springs 10:23:05 -19.3 Dark Down 32.2 200.2 Up 10:08:05 - 10:38:05 10013
CPSLO 10:23:24 -22.7 Dark Up 34.6 195.1 Up 10:08:24 - 10:38:24 9994
Henderson 10:23:01 -19.3 Dark Down 32.5 201.0 Up 10:08:01 - 10:38:01 9968
Searchlight/Boulder City 10:23:01 -19.7 Dark Down 33.1 201.2 Up 10:08:01 - 10:38:01 9929
Patrick 10:22:57 -19.2 Dark Down 32.8 202.4 Up 10:07:57 - 10:37:57 9909
Laughlin/Bullhead City 10:22:59 -19.8 Dark Down 33.2 201.7 Up 10:07:59 - 10:37:59 9903
Kingman/Dolan Springs 10:22:58 -19.5 Dark Down 33.1 202.2 Up 10:07:58 - 10:37:58 9897
Wildwood 10:23:15 -22.7 Dark Down 35.3 197.6 Up 10:08:15 - 10:38:15 9886
Mohave Valley 10:22:59 -20.0 Dark Down 33.5 201.7 Up 10:07:59 - 10:37:59 9884
DCO 10:22:54 -19.1 Dark Down 32.9 203.2 Up 10:07:54 - 10:37:54 9878
Lake Havasu City 10:22:58 -20.2 Dark Down 33.8 202.1 Up 10:07:58 - 10:37:58 9853
Idyllwild 10:23:07 -22.0 Dark Down 35.2 199.7 Up 10:08:07 - 10:38:07 9836
Parker 10:22:57 -20.4 Dark Down 34.1 202.2 Up 10:07:57 - 10:37:57 9828
Blythe 10:22:58 -21.0 Dark Down 34.7 202.0 Up 10:07:58 - 10:37:58 9796
Calipatria 10:23:02 -21.9 Dark Down 35.4 201.2 Up 10:08:02 - 10:38:02 9775
Yuma 10:22:58 -21.7 Dark Down 35.6 202.2 Up 10:07:58 - 10:37:58 9731

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 2017/07/01 17:44:33 UT

Marc W. Buie, Southwest Research Institute

RECON