RECON: TNO occultation with 04HX78

Event between 04HX78 and star GA0740:08311454 with event index number of 189845

Geocentric closest approach at 2019/05/18 07:47:25 UTC

J2000 position of star is 17:28:05.9 -14:04:25
Equinox of date position of star is 17:29:09.7 -14:05:16
Stellar brightness G=15.1, use SENSEUP=128
Star is 32 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 33.5 AU from the Sun and 32.6 AU from the Earth.
The TNO is moving 21.3 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 450 seconds.
The 1-sigma cross-track error in the shadow position is 2891 km.
The sky-plane scale is 23664.9 km/arcsec.

The TNO has an absolute magnitude Hv=8.1
Diameter=143.9 km assuming a 5% albedo -- 6.7 sec chord
Diameter=58.7 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04HX78, (2019/05/18 07:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.9 -26:28:24  0.9 18.47  22
35Eta Oph      17:11:29.4 -15:44:51  2.6  4.59  28
53Nu Ser       17:21:55.1 -12:51:54  4.0  2.15  31
PPM 233132     17:30:13.4 -14:05:42  8.2  0.25  33
PPM 233114     17:29:38.1 -14:09:53  9.4  0.13  32
04HX78         17:29:11.9 -14:05:18 15.1        33
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 2.0 sigma about the mid-time.
The median site spacing is 15.1 km RECON observability=1.0 and success probability=5.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Rutland 07:49:49 -20.6 Dark Up 21.4 150.5 Low 07:34:49 - 08:04:49 5222
Penticton 07:49:50 -20.9 Dark Up 21.6 150.2 Low 07:34:50 - 08:04:50 5197
Okanagan Falls 07:49:51 -21.1 Dark Up 21.8 150.2 Low 07:34:51 - 08:04:51 5185
Southern Okanagan 07:49:50 -21.3 Dark Up 21.9 150.2 Low 07:34:50 - 08:04:50 5176
Oroville 07:49:51 -21.5 Dark Up 22.2 150.2 Low 07:34:51 - 08:04:51 5164
Tonasket 07:49:51 -21.8 Dark Up 22.4 150.2 Low 07:34:51 - 08:04:51 5150
Okanogan 07:49:52 -22.1 Dark Up 22.6 150.0 Low 07:34:52 - 08:04:52 5126
Brewster 07:49:52 -22.4 Dark Up 22.8 149.7 Low 07:34:52 - 08:04:52 5105
Manson/Chelan 07:49:54 -22.6 Dark Up 22.9 149.3 Low 07:34:54 - 08:04:54 5084
Entiat 07:49:54 -22.8 Dark Up 23.0 149.2 Low 07:34:54 - 08:04:54 5069
Wenatchee 07:49:55 -23.1 Dark Up 23.2 149.1 Low 07:34:55 - 08:04:55 5050
Ellensburg 07:49:56 -23.5 Dark Up 23.5 148.8 Low 07:34:56 - 08:04:56 5019
Pasco 07:49:54 -24.2 Dark Up 24.6 150.0 Low 07:34:54 - 08:04:54 5004
PNWRO 07:49:53 -24.5 Dark Up 24.9 150.2 Low 07:34:53 - 08:04:53 4994
Yakima 07:49:57 -23.9 Dark Up 23.8 148.6 Low 07:34:57 - 08:04:57 4993
Toppenish/White Swan 07:49:57 -24.1 Dark Up 24.1 148.8 Low 07:34:57 - 08:04:57 4983
George/Umatilla 07:49:53 -24.6 Dark Up 24.8 149.7 Low 07:34:53 - 08:04:53 4978
Goldendale 07:49:58 -24.6 Dark Up 24.4 148.2 Low 07:34:58 - 08:04:58 4938
Niwot 07:49:10 -29.2 Dark Up 34.2 163.3 Up 07:34:10 - 08:04:10 4914
The Dalles 07:50:00 -24.8 Dark Up 24.5 147.8 Low 07:35:00 - 08:05:00 4914
Maupin 07:50:00 -25.3 Dark Up 24.9 147.8 Low 07:35:00 - 08:05:00 4889
Madras/Culver 07:50:01 -25.8 Dark Up 25.3 147.6 Low 07:35:01 - 08:05:01 4852
Redmond 07:50:02 -26.2 Dark Up 25.6 147.5 Low 07:35:02 - 08:05:02 4826
Sisters 07:50:03 -26.1 Dark Up 25.4 147.1 Low 07:35:03 - 08:05:03 4819
Bend 07:50:02 -26.4 Dark Up 25.7 147.3 Low 07:35:02 - 08:05:02 4809
Oregon Observatory 07:50:02 -26.5 Dark Up 25.8 147.1 Low 07:35:02 - 08:05:02 4794
La Pine/Gilchrist 07:50:03 -26.7 Dark Up 26.0 147.0 Low 07:35:03 - 08:05:03 4778
North Lake 07:50:02 -27.2 Dark Up 26.6 147.5 Low 07:35:02 - 08:05:02 4763
Paisley 07:50:01 -27.8 Dark Up 27.2 147.7 Low 07:35:01 - 08:05:01 4733
Lakeview 07:50:02 -28.3 Dark Up 27.7 147.8 Low 07:35:02 - 08:05:02 4703
Chiloquin 07:50:05 -27.8 Dark Up 26.7 146.4 Low 07:35:05 - 08:05:05 4692
Klamath Falls 07:50:05 -28.2 Dark Up 27.1 146.4 Low 07:35:05 - 08:05:05 4670
Cedarville 07:50:01 -28.9 Dark Up 28.3 147.7 Low 07:35:01 - 08:05:01 4661
Tulelake 07:50:05 -28.5 Dark Up 27.4 146.6 Low 07:35:05 - 08:05:05 4659
Fall River/Burney 07:50:06 -29.4 Dark Up 28.2 146.4 Low 07:35:06 - 08:05:06 4596
Susanville 07:50:04 -30.0 Dark Up 29.0 146.9 Low 07:35:04 - 08:05:04 4569
Gimple 07:50:05 -30.3 Dark Up 29.2 146.7 Low 07:35:05 - 08:05:05 4543
Greenville 07:50:05 -30.3 Dark Up 29.2 146.6 Low 07:35:05 - 08:05:05 4541
Portola 07:50:04 -30.6 Dark Up 29.6 146.9 Low 07:35:04 - 08:05:04 4529
Quincy 07:50:05 -30.5 Dark Up 29.3 146.5 Low 07:35:05 - 08:05:05 4526
Reno 07:50:02 -30.9 Dark Up 30.1 147.5 Up 07:35:02 - 08:05:02 4526
Yerington 07:50:01 -31.5 Dark Up 30.9 148.0 Up 07:35:01 - 08:05:01 4502
Carson City 07:50:02 -31.3 Dark Up 30.4 147.4 Up 07:35:02 - 08:05:02 4500
Gardnerville 07:50:02 -31.5 Dark Up 30.7 147.4 Up 07:35:02 - 08:05:02 4483
Tonopah 07:49:54 -32.4 Dark Up 32.4 149.7 Up 07:34:54 - 08:04:54 4482
Hawthorne 07:49:58 -32.0 Dark Up 31.5 148.4 Up 07:34:58 - 08:04:58 4481
Lee Vining 07:50:01 -32.5 Dark Up 31.7 147.7 Up 07:35:01 - 08:05:01 4426
Indian Springs 07:49:50 -33.9 Dark Up 34.3 150.8 Up 07:34:50 - 08:04:50 4409
Beatty 07:49:54 -33.6 Dark Up 33.6 149.8 Up 07:34:54 - 08:04:54 4407
Bishop 07:49:59 -33.1 Dark Up 32.6 148.3 Up 07:34:59 - 08:04:59 4400
Henderson 07:49:47 -34.4 Dark Up 35.1 151.4 Up 07:34:47 - 08:04:47 4386
Patrick 07:49:44 -34.9 Dark Up 36.0 152.4 Up 07:34:44 - 08:04:44 4367
DCO 07:49:41 -35.2 Dark Up 36.6 153.1 Up 07:34:41 - 08:04:41 4362
Lone Pine 07:49:58 -33.9 Dark Up 33.3 148.3 Up 07:34:58 - 08:04:58 4350
Kingman/Dolan Springs 07:49:44 -35.2 Dark Up 36.2 152.1 Up 07:34:44 - 08:04:44 4345
Searchlight/Boulder City 07:49:48 -34.9 Dark Up 35.6 151.3 Up 07:34:48 - 08:04:48 4344
Laughlin/Bullhead City 07:49:47 -35.2 Dark Up 36.0 151.5 Up 07:34:47 - 08:04:47 4330
Mohave Valley 07:49:46 -35.5 Dark Up 36.2 151.4 Up 07:34:46 - 08:04:46 4309
Lake Havasu City 07:49:47 -35.9 Dark Up 36.7 151.6 Up 07:34:47 - 08:04:47 4284
Parker 07:49:46 -36.2 Dark Up 37.0 151.5 Up 07:34:46 - 08:04:46 4257
Blythe 07:49:47 -36.8 Dark Up 37.3 151.0 Up 07:34:47 - 08:04:47 4208
CPSLO 07:50:09 -35.1 Dark Up 33.3 145.2 Up 07:35:09 - 08:05:09 4180
Idyllwild 07:49:55 -36.7 Dark Up 36.4 148.7 Up 07:34:55 - 08:04:55 4161
Calipatria 07:49:51 -37.3 Dark Up 37.4 149.8 Up 07:34:51 - 08:04:51 4144
Wildwood 07:50:02 -36.4 Dark Up 35.2 146.9 Up 07:35:02 - 08:05:02 4139
Yuma 07:49:48 -37.7 Dark Up 38.1 150.6 Up 07:34:48 - 08:04:48 4133

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, (2019/05/18 07:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.47  22
35Eta Oph      17:10:22.7 -15:43:29  2.6  4.59  28
53Nu Ser       17:20:49.7 -12:50:49  4.0  2.15  31
PPM 233132     17:29:07.3 -14:04:50  8.2  0.25  33
PPM 233114     17:28:32.1 -14:09:01  9.4  0.13  32
04HX78         17:28:05.9 -14:04:25 15.1        32
Positions are for J2000

Event circumstances last updated at 2018/09/23 17:44:52 UT

Marc W. Buie, Southwest Research Institute

RECON