RECON: TNO occultation with 10370

Event between (10370) Hylonome and star UC4-357-167630 with event index number of 196547

Geocentric closest approach at 2019/06/19 05:26:44 UTC

J2000 position of star is 18:53:38.4 -18:39:29
Equinox of date position of star is 18:54:41.4 -18:38:05
Stellar brightness R=15.0, use SENSEUP=128
Star is 8 degrees from the moon. Moon is 96% 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 22.3 km/sec on the sky relative to the star, or, 4.7 arcsec/hr.
The 1-sigma error in the time of the event is 917 seconds.
The 1-sigma cross-track error in the shadow position is 4270 km.
The sky-plane scale is 16937.9 km/arcsec.

The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 5.2 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10370, (2019/06/19 05:27UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.2 -26:28:25  0.9 34.08  40
Nunki          18:56:28.2 -26:16:15  2.0  7.65   8
PPM 235314     19:00:32.5 -19:15:05  6.5  1.50   7
PPM 235159     18:54:04.2 -18:14:03  7.6  0.43   8
PPM 235172     18:54:29.1 -18:45:40  8.6  0.15   8
10370          18:54:46.8 -18:37:58 15.0         8
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 1.0 sigma about the mid-time.
The median site spacing is 85.9 km RECON observability=0.1 and success probability=1.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 05:28:56 -10.3 CT Up 7.4 129.9 Really Low 05:13:56 - 05:43:56 10327
Tonasket 05:28:58 -10.5 CT Up 7.6 129.8 Really Low 05:13:58 - 05:43:58 10316
Okanogan 05:28:59 -10.7 CT Up 7.7 129.7 Really Low 05:13:59 - 05:43:59 10297
Brewster 05:29:00 -10.8 CT Up 7.8 129.5 Really Low 05:14:00 - 05:44:00 10281
Manson/Chelan 05:29:01 -10.9 CT Up 7.7 129.2 Really Low 05:14:01 - 05:44:01 10264
Entiat 05:29:02 -11.0 CT Up 7.9 129.1 Really Low 05:14:02 - 05:44:02 10252
Wenatchee 05:29:03 -11.2 CT Up 8.0 129.0 Really Low 05:14:03 - 05:44:03 10238
Ellensburg 05:29:05 -11.5 CT Up 8.1 128.8 Really Low 05:14:05 - 05:44:05 10213
Pasco 05:29:04 -12.6 AT Up 9.3 129.8 Really Low 05:14:04 - 05:44:04 10197
Yakima 05:29:06 -11.8 CT Up 8.4 128.7 Really Low 05:14:06 - 05:44:06 10191
PNWRO 05:29:05 -12.9 AT Up 9.6 130.0 Really Low 05:14:05 - 05:44:05 10188
Toppenish/White Swan 05:29:06 -12.0 AT Up 8.6 128.9 Really Low 05:14:06 - 05:44:06 10183
George/Umatilla 05:29:06 -12.8 AT Up 9.4 129.6 Really Low 05:14:06 - 05:44:06 10176
Goldendale 05:29:10 -12.3 AT Up 8.7 128.5 Really Low 05:14:10 - 05:44:10 10146
The Dalles 05:29:10 -12.3 AT Up 8.6 128.1 Really Low 05:14:10 - 05:44:10 10128
Maupin 05:29:12 -12.7 AT Up 9.0 128.2 Really Low 05:14:12 - 05:44:12 10107
Madras/Culver 05:29:13 -13.1 AT Up 9.3 128.1 Really Low 05:14:13 - 05:44:13 10076
Niwot 05:28:45 -22.9 Dark Up 20.8 140.1 Low 05:13:45 - 05:43:45 10056
Redmond 05:29:14 -13.4 AT Up 9.5 128.0 Really Low 05:14:14 - 05:44:14 10055
Sisters 05:29:15 -13.2 AT Up 9.2 127.7 Really Low 05:14:15 - 05:44:15 10050
Bend 05:29:15 -13.5 AT Up 9.5 127.9 Really Low 05:14:15 - 05:44:15 10041
Oregon Observatory 05:29:16 -13.6 AT Up 9.6 127.8 Really Low 05:14:16 - 05:44:16 10029
La Pine/Gilchrist 05:29:17 -13.7 AT Up 9.7 127.7 Really Low 05:14:17 - 05:44:17 10016
North Lake 05:29:17 -14.4 AT Up 10.3 128.1 Really Low 05:14:17 - 05:44:17 10001
Paisley 05:29:18 -15.0 AT Up 10.8 128.3 Really Low 05:14:18 - 05:44:18 9976
Lakeview 05:29:19 -15.5 AT Up 11.3 128.4 Really Low 05:14:19 - 05:44:19 9949
Chiloquin 05:29:21 -14.5 AT Up 10.1 127.3 Really Low 05:14:21 - 05:44:21 9945
Klamath Falls 05:29:22 -14.8 AT Up 10.4 127.3 Really Low 05:14:22 - 05:44:22 9926
Tulelake 05:29:21 -15.1 AT Up 10.7 127.5 Really Low 05:14:21 - 05:44:21 9915
Cedarville 05:29:20 -16.1 AT Up 11.8 128.4 Really Low 05:14:20 - 05:44:20 9913
Fall River/Burney 05:29:24 -15.9 AT Up 11.3 127.4 Really Low 05:14:24 - 05:44:24 9861
Susanville 05:29:24 -16.8 AT Up 12.2 127.9 Really Low 05:14:24 - 05:44:24 9836
Gimple 05:29:25 -16.9 AT Up 12.2 127.6 Really Low 05:14:25 - 05:44:25 9815
Greenville 05:29:26 -16.8 AT Up 12.2 127.6 Really Low 05:14:26 - 05:44:26 9814
Portola 05:29:26 -17.3 AT Up 12.7 127.9 Really Low 05:14:26 - 05:44:26 9802
Quincy 05:29:26 -17.0 AT Up 12.3 127.6 Really Low 05:14:26 - 05:44:26 9801
Reno 05:29:25 -17.8 AT Up 13.2 128.3 Really Low 05:14:25 - 05:44:25 9797
Carson City 05:29:26 -18.1 Dark Up 13.5 128.3 Really Low 05:14:26 - 05:44:26 9775
Yerington 05:29:25 -18.6 Dark Up 14.0 128.7 Really Low 05:14:25 - 05:44:25 9774
Gardnerville 05:29:27 -18.4 Dark Up 13.6 128.3 Really Low 05:14:27 - 05:44:27 9760
Hawthorne 05:29:25 -19.2 Dark Up 14.6 129.0 Really Low 05:14:25 - 05:44:25 9754
Tonopah 05:29:23 -20.2 Dark Up 15.7 130.0 Really Low 05:14:23 - 05:44:23 9749
Lee Vining 05:29:28 -19.4 Dark Up 14.6 128.5 Really Low 05:14:28 - 05:44:28 9708
Bishop 05:29:28 -20.3 Dark Up 15.5 129.0 Really Low 05:14:28 - 05:44:28 9682
Beatty 05:29:24 -21.4 Dark Up 16.8 130.1 Really Low 05:14:24 - 05:44:24 9681
Indian Springs 05:29:22 -22.1 Dark Up 17.6 130.8 Really Low 05:14:22 - 05:44:22 9678
Henderson 05:29:23 -22.9 Dark Up 18.4 131.2 Really Low 05:14:23 - 05:44:23 9654
Lone Pine 05:29:28 -21.0 Dark Up 16.1 129.0 Really Low 05:14:28 - 05:44:28 9637
Patrick 05:29:21 -23.9 Dark Up 19.5 131.9 Really Low 05:14:21 - 05:44:21 9630
DCO 05:29:20 -24.5 Dark Up 20.1 132.4 Low 05:14:20 - 05:44:20 9621
Searchlight/Boulder City 05:29:24 -23.4 Dark Up 18.8 131.1 Really Low 05:14:24 - 05:44:24 9616
Kingman/Dolan Springs 05:29:21 -24.0 Dark Up 19.5 131.7 Really Low 05:14:21 - 05:44:21 9612
Laughlin/Bullhead City 05:29:23 -23.8 Dark Up 19.2 131.3 Really Low 05:14:23 - 05:44:23 9602
Mohave Valley 05:29:24 -24.0 Dark Up 19.4 131.2 Really Low 05:14:24 - 05:44:24 9583
Lake Havasu City 05:29:24 -24.5 Dark Up 19.8 131.3 Really Low 05:14:24 - 05:44:24 9560
Parker 05:29:25 -24.8 Dark Up 20.1 131.3 Low 05:14:25 - 05:44:25 9536
CPSLO 05:29:39 -20.9 Dark Up 15.3 126.9 Really Low 05:14:39 - 05:44:39 9499
Blythe 05:29:27 -25.1 Dark Up 20.2 130.9 Low 05:14:27 - 05:44:27 9493
Idyllwild 05:29:32 -24.0 Dark Up 18.8 129.4 Really Low 05:14:32 - 05:44:32 9464
Wildwood 05:29:36 -22.8 Dark Up 17.4 128.1 Really Low 05:14:36 - 05:44:36 9454
Calipatria 05:29:31 -25.1 Dark Up 20.0 130.1 Really Low 05:14:31 - 05:44:31 9442
Yuma 05:29:30 -25.9 Dark Up 20.8 130.6 Low 05:14:30 - 05:44:30 9427

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, (2019/06/19 05:27UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 34.08  40
Nunki          18:55:15.9 -26:17:49  2.0  7.65   8
PPM 235314     18:59:23.9 -19:16:46  6.5  1.50   7
PPM 235159     18:52:56.0 -18:15:33  7.6  0.43   8
PPM 235172     18:53:20.7 -18:47:11  8.6  0.15   8
10370          18:53:38.4 -18:39:29 15.0         8
Positions are for J2000

Event circumstances last updated at 2017/12/06 19:02:43 UT

Marc W. Buie, Southwest Research Institute

RECON