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 05:26:43 UTC

J2000 position of star is 18:53:38.4 -18:39:29
Equinox of date position of star is 18:54:39.9 -18:38:07
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 967 seconds.
The 1-sigma cross-track error in the shadow position is 4496 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 0.9 sigma about the mid-time.
The median site spacing is 86.6 km RECON observability=0.1 and success probability=1.2%
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 10332
Tonasket 05:28:57 -10.5 CT Up 7.6 129.8 Really Low 05:13:57 - 05:43:57 10320
Okanogan 05:28:59 -10.7 CT Up 7.7 129.7 Really Low 05:13:59 - 05:43:59 10302
Brewster 05:29:00 -10.8 CT Up 7.8 129.5 Really Low 05:14:00 - 05:44:00 10285
Manson/Chelan 05:29:01 -10.9 CT Up 7.7 129.2 Really Low 05:14:01 - 05:44:01 10269
Entiat 05:29:02 -11.0 CT Up 7.9 129.1 Really Low 05:14:02 - 05:44:02 10257
Wenatchee 05:29:03 -11.2 CT Up 8.0 129.0 Really Low 05:14:03 - 05:44:03 10242
Ellensburg 05:29:05 -11.5 CT Up 8.1 128.8 Really Low 05:14:05 - 05:44:05 10218
Pasco 05:29:03 -12.6 AT Up 9.3 129.8 Really Low 05:14:03 - 05:44:03 10202
Yakima 05:29:06 -11.8 CT Up 8.4 128.7 Really Low 05:14:06 - 05:44:06 10196
PNWRO 05:29:04 -12.9 AT Up 9.6 130.0 Really Low 05:14:04 - 05:44:04 10193
Toppenish/White Swan 05:29:06 -12.0 AT Up 8.6 128.9 Really Low 05:14:06 - 05:44:06 10188
George/Umatilla 05:29:05 -12.8 AT Up 9.4 129.6 Really Low 05:14:05 - 05:44:05 10181
Goldendale 05:29:09 -12.3 AT Up 8.7 128.5 Really Low 05:14:09 - 05:44:09 10151
The Dalles 05:29:10 -12.3 AT Up 8.6 128.1 Really Low 05:14:10 - 05:44:10 10133
Maupin 05:29:11 -12.7 AT Up 9.0 128.2 Really Low 05:14:11 - 05:44:11 10112
Madras/Culver 05:29:12 -13.1 AT Up 9.3 128.1 Really Low 05:14:12 - 05:44:12 10082
Niwot 05:28:44 -22.9 Dark Up 20.8 140.1 Low 05:13:44 - 05:43:44 10061
Redmond 05:29:13 -13.4 AT Up 9.5 128.0 Really Low 05:14:13 - 05:44:13 10061
Sisters 05:29:14 -13.2 AT Up 9.2 127.7 Really Low 05:14:14 - 05:44:14 10055
Bend 05:29:14 -13.5 AT Up 9.5 127.9 Really Low 05:14:14 - 05:44:14 10047
Oregon Observatory 05:29:15 -13.6 AT Up 9.6 127.7 Really Low 05:14:15 - 05:44:15 10035
La Pine/Gilchrist 05:29:16 -13.7 AT Up 9.7 127.7 Really Low 05:14:16 - 05:44:16 10022
North Lake 05:29:16 -14.4 AT Up 10.3 128.1 Really Low 05:14:16 - 05:44:16 10008
Paisley 05:29:17 -15.0 AT Up 10.8 128.3 Really Low 05:14:17 - 05:44:17 9982
Lakeview 05:29:18 -15.5 AT Up 11.2 128.4 Really Low 05:14:18 - 05:44:18 9955
Chiloquin 05:29:21 -14.5 AT Up 10.1 127.3 Really Low 05:14:21 - 05:44:21 9951
Klamath Falls 05:29:21 -14.8 AT Up 10.4 127.3 Really Low 05:14:21 - 05:44:21 9932
Tulelake 05:29:21 -15.1 AT Up 10.7 127.5 Really Low 05:14:21 - 05:44:21 9921
Cedarville 05:29:19 -16.1 AT Up 11.8 128.4 Really Low 05:14:19 - 05:44:19 9919
Fall River/Burney 05:29:24 -15.9 AT Up 11.3 127.4 Really Low 05:14:24 - 05:44:24 9867
Susanville 05:29:23 -16.8 AT Up 12.2 127.8 Really Low 05:14:23 - 05:44:23 9842
Gimple 05:29:25 -16.9 AT Up 12.2 127.6 Really Low 05:14:25 - 05:44:25 9821
Greenville 05:29:25 -16.8 AT Up 12.2 127.6 Really Low 05:14:25 - 05:44:25 9820
Portola 05:29:25 -17.3 AT Up 12.7 127.9 Really Low 05:14:25 - 05:44:25 9808
Quincy 05:29:26 -17.0 AT Up 12.3 127.6 Really Low 05:14:26 - 05:44:26 9807
Reno 05:29:24 -17.8 AT Up 13.2 128.3 Really Low 05:14:24 - 05:44:24 9803
Carson City 05:29:25 -18.1 Dark Up 13.5 128.3 Really Low 05:14:25 - 05:44:25 9781
Yerington 05:29:24 -18.6 Dark Up 14.0 128.7 Really Low 05:14:24 - 05:44:24 9780
Gardnerville 05:29:26 -18.4 Dark Up 13.6 128.3 Really Low 05:14:26 - 05:44:26 9766
Hawthorne 05:29:24 -19.2 Dark Up 14.6 129.0 Really Low 05:14:24 - 05:44:24 9760
Tonopah 05:29:21 -20.2 Dark Up 15.7 130.0 Really Low 05:14:21 - 05:44:21 9755
Lee Vining 05:29:27 -19.4 Dark Up 14.6 128.5 Really Low 05:14:27 - 05:44:27 9715
Bishop 05:29:27 -20.3 Dark Up 15.5 129.0 Really Low 05:14:27 - 05:44:27 9688
Beatty 05:29:24 -21.4 Dark Up 16.8 130.1 Really Low 05:14:24 - 05:44:24 9686
Indian Springs 05:29:22 -22.1 Dark Up 17.6 130.8 Really Low 05:14:22 - 05:44:22 9683
Henderson 05:29:21 -22.9 Dark Up 18.4 131.2 Really Low 05:14:21 - 05:44:21 9659
Lone Pine 05:29:28 -21.0 Dark Up 16.1 129.0 Really Low 05:14:28 - 05:44:28 9643
Patrick 05:29:20 -23.9 Dark Up 19.5 131.9 Really Low 05:14:20 - 05:44:20 9636
DCO 05:29:18 -24.5 Dark Up 20.1 132.4 Low 05:14:18 - 05:44:18 9627
Searchlight/Boulder City 05:29:22 -23.4 Dark Up 18.8 131.1 Really Low 05:14:22 - 05:44:22 9622
Kingman/Dolan Springs 05:29:21 -24.0 Dark Up 19.5 131.7 Really Low 05:14:21 - 05:44:21 9618
Laughlin/Bullhead City 05:29:22 -23.8 Dark Up 19.2 131.3 Really Low 05:14:22 - 05:44:22 9607
Mohave Valley 05:29:22 -24.0 Dark Up 19.4 131.2 Really Low 05:14:22 - 05:44:22 9588
Lake Havasu City 05:29:23 -24.5 Dark Up 19.8 131.3 Really Low 05:14:23 - 05:44:23 9565
Parker 05:29:24 -24.8 Dark Up 20.1 131.3 Low 05:14:24 - 05:44:24 9541
CPSLO 05:29:37 -20.8 Dark Up 15.3 126.9 Really Low 05:14:37 - 05:44:37 9505
Blythe 05:29:26 -25.1 Dark Up 20.2 130.9 Low 05:14:26 - 05:44:26 9498
Idyllwild 05:29:31 -24.0 Dark Up 18.8 129.4 Really Low 05:14:31 - 05:44:31 9470
Wildwood 05:29:36 -22.8 Dark Up 17.4 128.1 Really Low 05:14:36 - 05:44:36 9460
Calipatria 05:29:30 -25.1 Dark Up 20.0 130.1 Really Low 05:14:30 - 05:44:30 9447
Yuma 05:29:28 -25.9 Dark Up 20.8 130.6 Low 05:14:28 - 05:44:28 9432

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 2017/07/01 17:45:37 UT

Marc W. Buie, Southwest Research Institute

RECON