RECON: TNO occultation with 10370

Event between (10370) Hylonome and star UC4-356-154782 with event index number of 130775

Geocentric closest approach at 2018/07/15 04:58:42 UTC

J2000 position of star is 18:36:50.9 -18:55:14
Equinox of date position of star is 18:37:54.1 -18:54:16
Stellar brightness R=14.6, use SENSEUP=128
Star is 136 degrees from the moon. Moon is 7% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 24.0 AU from the Sun and 23.1 AU from the Earth.
The TNO is moving 22.4 km/sec on the sky relative to the star, or, 4.8 arcsec/hr.
The 1-sigma error in the time of the event is 908 seconds.
The 1-sigma cross-track error in the shadow position is 3071 km.
The sky-plane scale is 16718.5 km/arcsec.

The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 5.1 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10370, (2018/07/15 04:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:32.8 -26:28:18  0.9 30.25 108
Nunki          18:56:24.8 -26:16:20  2.0  8.51 140
PPM 234652     18:32:31.5 -18:23:18  5.0  1.38 135
PPM 234780     18:37:38.2 -18:46:17  8.3  0.15 136
PPM 234789     18:38:00.8 -18:54:10 10.0  0.02 136
10370          18:37:56.3 -18:54:14 14.6       136
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 16.4 km RECON observability=0.4 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 04:59:52 -8.5 CT Up 16.9 149.7 Really Low 04:44:52 - 05:14:52 7727
Tonasket 04:59:52 -8.7 CT Up 17.1 149.7 Really Low 04:44:52 - 05:14:52 7717
Okanogan 04:59:52 -8.9 CT Up 17.3 149.5 Really Low 04:44:52 - 05:14:52 7702
Brewster 04:59:52 -9.0 CT Up 17.5 149.3 Really Low 04:44:52 - 05:14:52 7690
Manson/Chelan 04:59:52 -9.0 CT Up 17.5 148.9 Really Low 04:44:52 - 05:14:52 7679
Entiat 04:59:52 -9.1 CT Up 17.7 148.8 Really Low 04:44:52 - 05:14:52 7669
Wenatchee 04:59:52 -9.2 CT Up 17.9 148.6 Really Low 04:44:52 - 05:14:52 7658
Ellensburg 04:59:52 -9.4 CT Up 18.1 148.4 Really Low 04:44:52 - 05:14:52 7639
Yakima 04:59:52 -9.7 CT Up 18.5 148.3 Really Low 04:44:52 - 05:14:52 7621
Pasco 04:59:52 -10.6 CT Up 19.3 149.6 Really Low 04:44:52 - 05:14:52 7613
Toppenish/White Swan 04:59:52 -10.0 CT Up 18.7 148.4 Really Low 04:44:52 - 05:14:52 7612
PNWRO 04:59:52 -10.9 CT Up 19.6 149.7 Really Low 04:44:52 - 05:14:52 7602
George/Umatilla 04:59:52 -10.8 CT Up 19.5 149.3 Really Low 04:44:52 - 05:14:52 7596
Goldendale 05:00:04 -10.2 CT Up 19.1 148.0 Really Low 04:45:04 - 05:15:04 7579
The Dalles 05:00:06 -10.2 CT Up 19.1 147.6 Really Low 04:45:06 - 05:15:06 7566
Maupin 05:00:07 -10.5 CT Up 19.5 147.6 Really Low 04:45:07 - 05:15:07 7547
Madras/Culver 05:00:08 -10.9 CT Up 20.0 147.5 Really Low 04:45:08 - 05:15:08 7519
Redmond 05:00:08 -11.1 CT Up 20.2 147.4 Low 04:45:08 - 05:15:08 7501
Sisters 05:00:10 -10.9 CT Up 20.1 147.0 Low 04:45:10 - 05:15:10 7499
Bend 05:00:10 -11.2 CT Up 20.4 147.2 Low 04:45:10 - 05:15:10 7490
Oregon Observatory 05:00:11 -11.3 CT Up 20.5 147.0 Low 04:45:11 - 05:15:11 7480
La Pine/Gilchrist 05:00:11 -11.4 CT Up 20.6 146.9 Low 04:45:11 - 05:15:11 7469
North Lake 05:00:10 -12.0 CT Up 21.2 147.4 Low 04:45:10 - 05:15:10 7451
Paisley 05:00:10 -12.6 AT Up 21.8 147.6 Low 04:45:10 - 05:15:10 7425
Chiloquin 05:00:15 -12.0 CT Up 21.4 146.4 Low 04:45:15 - 05:15:15 7408
Lakeview 05:00:11 -13.0 AT Up 22.3 147.7 Low 04:45:11 - 05:15:11 7400
Klamath Falls 05:00:15 -12.3 AT Up 21.7 146.4 Low 04:45:15 - 05:15:15 7391
Tulelake 05:00:15 -12.6 AT Up 22.1 146.6 Low 04:45:15 - 05:15:15 7379
Cedarville 05:00:11 -13.6 AT Up 22.9 147.7 Low 04:45:11 - 05:15:11 7366
Niwot 04:59:22 -21.6 Dark Down 29.0 162.1 Low 04:44:22 - 05:14:22 7347
Fall River/Burney 05:00:16 -13.3 AT Up 22.9 146.5 Low 04:45:16 - 05:15:16 7330
Susanville 05:00:15 -14.1 AT Up 23.7 147.0 Low 04:45:15 - 05:15:15 7300
Gimple 05:00:16 -14.2 AT Up 23.8 146.8 Low 04:45:16 - 05:15:16 7283
Greenville 05:00:16 -14.2 AT Up 23.8 146.7 Low 04:45:16 - 05:15:16 7282
Quincy 05:00:17 -14.3 AT Up 24.0 146.6 Low 04:45:17 - 05:15:17 7271
Portola 05:00:15 -14.7 AT Up 24.3 147.0 Low 04:45:15 - 05:15:15 7267
Reno 05:00:14 -15.2 AT Up 24.8 147.6 Low 04:45:14 - 05:15:14 7257
Carson City 05:00:14 -15.5 AT Down 25.1 147.5 Low 04:45:14 - 05:15:14 7236
Yerington 05:00:12 -16.0 AT Down 25.5 148.1 Low 04:45:12 - 05:15:12 7230
Gardnerville 05:00:15 -15.7 AT Down 25.3 147.5 Low 04:45:15 - 05:15:15 7222
Hawthorne 05:00:12 -16.6 AT Down 26.1 148.4 Low 04:45:12 - 05:15:12 7206
Tonopah 05:00:08 -17.7 AT Down 27.1 149.7 Low 04:45:08 - 05:15:08 7188
Lee Vining 05:00:14 -16.7 AT Down 26.4 147.8 Low 04:45:14 - 05:15:14 7169
Bishop 05:00:13 -17.6 AT Down 27.2 148.4 Low 04:45:13 - 05:15:13 7138
Beatty 05:00:08 -18.8 Dark Down 28.3 149.8 Low 04:45:08 - 05:15:08 7120
Indian Springs 05:00:05 -19.6 Dark Down 29.0 150.8 Low 04:45:05 - 05:15:05 7106
Lone Pine 05:00:13 -18.3 Dark Down 28.0 148.5 Low 04:45:13 - 05:15:13 7093
Henderson 05:00:03 -20.4 Dark Down 29.7 151.3 Low 04:45:03 - 05:15:03 7077
Patrick 04:59:52 -21.4 Dark Down 30.7 152.2 Up 04:44:52 - 05:14:52 7045
Searchlight/Boulder City 05:00:04 -20.8 Dark Down 30.2 151.2 Up 04:45:04 - 05:15:04 7041
Kingman/Dolan Springs 04:59:52 -21.5 Dark Down 30.8 151.9 Up 04:44:52 - 05:14:52 7031
DCO 04:59:52 -22.0 Dark Down 31.2 152.8 Up 04:44:52 - 05:14:52 7028
Laughlin/Bullhead City 05:00:03 -21.2 Dark Down 30.6 151.4 Up 04:45:03 - 05:15:03 7024
Mohave Valley 05:00:03 -21.4 Dark Down 30.9 151.4 Up 04:45:03 - 05:15:03 7006
CPSLO 05:00:24 -17.8 AT Down 28.0 145.7 Low 04:45:24 - 05:15:24 6991
Lake Havasu City 05:00:03 -21.9 Dark Down 31.3 151.5 Up 04:45:03 - 05:15:03 6981
Parker 05:00:04 -22.2 Dark Down 31.7 151.4 Up 04:45:04 - 05:15:04 6958
Wildwood 05:00:19 -19.8 Dark Down 29.9 147.2 Low 04:45:19 - 05:15:19 6928
Blythe 05:00:05 -22.4 Dark Down 32.0 151.0 Up 04:45:05 - 05:15:05 6922
Idyllwild 05:00:13 -21.1 Dark Down 31.0 148.9 Up 04:45:13 - 05:15:13 6917
Calipatria 05:00:10 -22.3 Dark Down 32.0 149.9 Up 04:45:10 - 05:15:10 6884
Yuma 05:00:08 -23.1 Dark Down 32.8 150.7 Up 04:45:08 - 05:15:08 6859

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, (2018/07/15 04:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 30.25 108
Nunki          18:55:15.9 -26:17:49  2.0  8.51 140
PPM 234652     18:31:26.3 -18:24:10  5.0  1.38 135
PPM 234780     18:36:32.9 -18:47:17  8.3  0.15 136
PPM 234789     18:36:55.5 -18:55:10 10.0  0.02 136
10370          18:36:50.9 -18:55:14 14.6       136
Positions are for J2000

Event circumstances last updated at 2017/12/05 18:48:13 UT

Marc W. Buie, Southwest Research Institute

RECON