RECON: TNO occultation with 04HX78

Event between 04HX78 and star UC4-380-083770 with event index number of 189851

Geocentric closest approach at 2019/06/01 06:36:28 UTC

J2000 position of star is 17:26:48.2 -14:00:56
Equinox of date position of star is 17:27:49.3 -14:01:47
Stellar brightness R=11.4, use SENSEUP=8
Star is 142 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=23.3

[RECON map]
TNO is 33.5 AU from the Sun and 32.6 AU from the Earth.
The TNO is moving 23.5 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 722 seconds.
The 1-sigma cross-track error in the shadow position is 3640 km.
The sky-plane scale is 23610.9 km/arcsec.

The TNO has an absolute magnitude Hv=8.1
Diameter=143.9 km assuming a 5% albedo -- 6.1 sec chord
Diameter=58.7 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04HX78, (2019/06/01 06:36UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.1 -26:28:24  0.9 18.29 153
35Eta Oph      17:11:29.6 -15:44:52  2.6  4.32 146
53Nu Ser       17:21:55.2 -12:51:54  4.0  1.86 143
PPM 233132     17:30:13.5 -14:05:42  8.2  0.57 142
PPM 233094     17:28:30.6 -14:03:02  9.4  0.15 142
04HX78         17:27:54.4 -14:01:51 11.4       142
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 1.2 sigma about the mid-time.
The median site spacing is 15.0 km RECON observability=1.0 and success probability=5.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:38:38 -17.0 AT Down 21.0 146.6 Low 06:23:38 - 06:53:38 5601
Tonasket 06:38:38 -17.2 AT Down 21.2 146.5 Low 06:23:38 - 06:53:38 5587
Okanogan 06:38:39 -17.5 AT Down 21.4 146.3 Low 06:23:39 - 06:53:39 5563
Brewster 06:38:40 -17.7 AT Down 21.5 146.1 Low 06:23:40 - 06:53:40 5543
Manson/Chelan 06:38:41 -17.8 AT Down 21.6 145.7 Low 06:23:41 - 06:53:41 5523
Entiat 06:38:42 -18.0 Dark Down 21.7 145.6 Low 06:23:42 - 06:53:42 5508
Wenatchee 06:38:42 -18.3 Dark Down 21.9 145.4 Low 06:23:42 - 06:53:42 5491
Ellensburg 06:38:43 -18.6 Dark Down 22.2 145.1 Low 06:23:43 - 06:53:43 5460
Pasco 06:38:41 -19.6 Dark Down 23.3 146.3 Low 06:23:41 - 06:53:41 5441
Yakima 06:38:44 -19.0 Dark Down 22.5 145.0 Low 06:23:44 - 06:53:44 5434
PNWRO 06:38:40 -19.9 Dark Down 23.6 146.5 Low 06:23:40 - 06:53:40 5430
Toppenish/White Swan 06:38:44 -19.2 Dark Down 22.7 145.1 Low 06:23:44 - 06:53:44 5424
George/Umatilla 06:38:42 -19.9 Dark Down 23.5 146.0 Low 06:23:42 - 06:53:42 5415
Goldendale 06:38:46 -19.6 Dark Down 23.0 144.6 Low 06:23:46 - 06:53:46 5379
The Dalles 06:38:47 -19.8 Dark Down 23.1 144.2 Low 06:23:47 - 06:53:47 5357
Maupin 06:38:48 -20.2 Dark Down 23.4 144.2 Low 06:23:48 - 06:53:48 5332
Niwot 06:38:05 -27.7 Dark Down 33.4 159.1 Up 06:23:05 - 06:53:05 5303
Madras/Culver 06:38:49 -20.7 Dark Down 23.9 144.0 Low 06:23:49 - 06:53:49 5295
Redmond 06:38:49 -21.0 Dark Down 24.1 143.8 Low 06:23:49 - 06:53:49 5270
Sisters 06:38:50 -20.9 Dark Down 23.9 143.5 Low 06:23:50 - 06:53:50 5263
Bend 06:38:50 -21.2 Dark Down 24.2 143.7 Low 06:23:50 - 06:53:50 5252
Oregon Observatory 06:38:50 -21.3 Dark Down 24.3 143.5 Low 06:23:50 - 06:53:50 5238
La Pine/Gilchrist 06:38:51 -21.5 Dark Down 24.5 143.4 Low 06:23:51 - 06:53:51 5223
North Lake 06:38:49 -22.0 Dark Down 25.1 143.8 Low 06:23:49 - 06:53:49 5206
Paisley 06:38:49 -22.6 Dark Down 25.7 144.0 Low 06:23:49 - 06:53:49 5175
Lakeview 06:38:49 -23.2 Dark Down 26.2 144.1 Low 06:23:49 - 06:53:49 5144
Chiloquin 06:38:53 -22.4 Dark Down 25.2 142.7 Low 06:23:53 - 06:53:53 5138
Klamath Falls 06:38:53 -22.8 Dark Down 25.5 142.7 Low 06:23:53 - 06:53:53 5116
Tulelake 06:38:53 -23.1 Dark Down 25.9 142.9 Low 06:23:53 - 06:53:53 5103
Cedarville 06:38:50 -23.8 Dark Down 26.8 144.0 Low 06:23:50 - 06:53:50 5101
Fall River/Burney 06:38:53 -24.0 Dark Down 26.6 142.7 Low 06:23:53 - 06:53:53 5040
Susanville 06:38:53 -24.7 Dark Down 27.5 143.3 Low 06:23:53 - 06:53:53 5011
Gimple 06:38:54 -24.9 Dark Down 27.6 143.0 Low 06:23:54 - 06:53:54 4986
Greenville 06:38:53 -24.9 Dark Down 27.6 142.9 Low 06:23:53 - 06:53:53 4984
Portola 06:38:53 -25.4 Dark Down 28.0 143.2 Low 06:23:53 - 06:53:53 4971
Quincy 06:38:54 -25.1 Dark Down 27.7 142.8 Low 06:23:54 - 06:53:54 4969
Reno 06:38:51 -25.8 Dark Down 28.6 143.8 Low 06:23:51 - 06:53:51 4965
Carson City 06:38:51 -26.1 Dark Down 28.8 143.7 Low 06:23:51 - 06:53:51 4939
Yerington 06:38:50 -26.5 Dark Down 29.3 144.2 Low 06:23:50 - 06:53:50 4939
Gardnerville 06:38:52 -26.4 Dark Down 29.1 143.7 Low 06:23:52 - 06:53:52 4922
Hawthorne 06:38:48 -27.0 Dark Down 29.9 144.6 Low 06:23:48 - 06:53:48 4916
Tonopah 06:38:45 -27.8 Dark Down 30.9 145.8 Up 06:23:45 - 06:53:45 4912
Lee Vining 06:38:51 -27.5 Dark Down 30.1 143.9 Up 06:23:51 - 06:53:51 4863
Beatty 06:38:45 -29.1 Dark Down 32.1 145.9 Up 06:23:45 - 06:53:45 4835
Indian Springs 06:38:42 -29.6 Dark Down 32.8 146.9 Up 06:23:42 - 06:53:42 4834
Bishop 06:38:49 -28.2 Dark Down 31.0 144.4 Up 06:23:49 - 06:53:49 4834
Henderson 06:38:39 -30.3 Dark Down 33.6 147.4 Up 06:23:39 - 06:53:39 4808
Patrick 06:38:36 -31.1 Dark Down 34.6 148.3 Up 06:23:36 - 06:53:36 4784
Lone Pine 06:38:49 -29.0 Dark Down 31.7 144.5 Up 06:23:49 - 06:53:49 4783
DCO 06:38:34 -31.6 Dark Down 35.1 149.0 Up 06:23:34 - 06:53:34 4776
Searchlight/Boulder City 06:38:40 -30.9 Dark Down 34.1 147.3 Up 06:23:40 - 06:53:40 4765
Kingman/Dolan Springs 06:38:37 -31.3 Dark Down 34.7 148.1 Up 06:23:37 - 06:53:37 4763
Laughlin/Bullhead City 06:38:39 -31.2 Dark Down 34.5 147.5 Up 06:23:39 - 06:53:39 4750
Mohave Valley 06:38:39 -31.5 Dark Down 34.7 147.4 Up 06:23:39 - 06:53:39 4729
Lake Havasu City 06:38:39 -31.9 Dark Down 35.2 147.5 Up 06:23:39 - 06:53:39 4703
Parker 06:38:39 -32.3 Dark Down 35.5 147.4 Up 06:23:39 - 06:53:39 4676
Blythe 06:38:40 -32.7 Dark Down 35.8 146.9 Up 06:23:40 - 06:53:40 4627
CPSLO 06:38:58 -29.5 Dark Down 31.5 141.5 Up 06:23:58 - 06:53:58 4622
Idyllwild 06:38:47 -32.1 Dark Down 34.7 144.8 Up 06:23:47 - 06:53:47 4588
Wildwood 06:38:53 -31.2 Dark Down 33.5 143.0 Up 06:23:53 - 06:53:53 4574
Calipatria 06:38:43 -33.0 Dark Down 35.8 145.7 Up 06:23:43 - 06:53:43 4567
Yuma 06:38:41 -33.6 Dark Down 36.5 146.5 Up 06:23:41 - 06:53:41 4552

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 04HX78, (2019/06/01 06:36UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.29 153
35Eta Oph      17:10:22.7 -15:43:29  2.6  4.32 146
53Nu Ser       17:20:49.7 -12:50:49  4.0  1.86 143
PPM 233132     17:29:07.3 -14:04:50  8.2  0.57 142
PPM 233094     17:27:24.5 -14:02:07  9.4  0.15 142
04HX78         17:26:48.2 -14:00:56 11.4       142
Positions are for J2000

Event circumstances last updated at 2017/12/06 18:59:33 UT

Marc W. Buie, Southwest Research Institute

RECON