RECON: TNO occultation with 04HC79

Event between 04HC79 and star GA0660:07893794 with event index number of 186503

Geocentric closest approach at 2019/04/22 12:05:40 UTC

J2000 position of star is 16:46:01.4 -22:26:32
Equinox of date position of star is 16:47:08.8 -22:28:30
Stellar brightness G=14.9, use SENSEUP=128
Star is 4 degrees from the moon. Moon is 89% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 39.6 AU from the Sun and 38.8 AU from the Earth.
The TNO is moving 16.9 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 542 seconds.
The 1-sigma cross-track error in the shadow position is 2474 km.
The sky-plane scale is 28133.7 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=201.4 km assuming a 5% albedo -- 11.9 sec chord
Diameter=82.2 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 04HC79, (2019/04/22 12:06UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.7 -26:28:24  0.9  5.50   8
23Tau Sco      16:37:05.3 -28:15:16  2.8  6.21   9
PPM 266088     16:54:33.8 -20:26:47  5.7  2.66   3
PPM 265937     16:47:38.8 -22:39:44  8.4  0.21   4
PPM 265936     16:47:36.8 -22:21:02  9.9  0.16   4
04HC79         16:47:10.8 -22:28:34 14.9         4
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 1.7 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Rutland 12:04:58 -7.6 NT Up 15.4 199.7 Really Low 11:49:58 - 12:19:58 4834
Penticton 12:04:57 -7.9 NT Up 15.8 199.6 Really Low 11:49:57 - 12:19:57 4822
Okanagan Falls 12:04:57 -8.0 NT Up 15.9 199.6 Really Low 11:49:57 - 12:19:57 4816
Southern Okanagan 12:04:56 -8.0 NT Up 16.1 199.6 Really Low 11:49:56 - 12:19:56 4811
Oroville 12:04:56 -8.1 NT Up 16.3 199.8 Really Low 11:49:56 - 12:19:56 4802
Tonasket 12:04:55 -8.2 NT Up 16.5 199.8 Really Low 11:49:55 - 12:19:55 4794
Okanogan 12:04:55 -8.5 NT Up 16.9 199.7 Really Low 11:49:55 - 12:19:55 4783
Brewster 12:04:56 -8.7 NT Up 17.2 199.5 Really Low 11:49:56 - 12:19:56 4774
Manson/Chelan 12:04:56 -9.0 NT Up 17.5 199.2 Really Low 11:49:56 - 12:19:56 4767
Entiat 12:04:57 -9.2 NT Up 17.7 199.2 Really Low 11:49:57 - 12:19:57 4759
Wenatchee 12:04:57 -9.3 NT Up 17.9 199.1 Really Low 11:49:57 - 12:19:57 4750
Ellensburg 12:04:56 -9.7 NT Up 18.4 198.9 Really Low 11:49:56 - 12:19:56 4735
Yakima 12:04:56 -9.9 NT Up 18.8 198.9 Really Low 11:49:56 - 12:19:56 4720
Toppenish/White Swan 12:04:55 -9.9 NT Up 18.9 199.1 Really Low 11:49:55 - 12:19:55 4711
Pasco 12:04:49 -9.2 NT Up 18.8 200.3 Really Low 11:49:49 - 12:19:49 4704
PNWRO 12:04:48 -9.2 NT Up 18.9 200.6 Really Low 11:49:48 - 12:19:48 4694
George/Umatilla 12:04:49 -9.5 NT Up 19.1 200.2 Really Low 11:49:49 - 12:19:49 4692
Goldendale 12:04:56 -10.4 NT Up 19.6 198.8 Really Low 11:49:56 - 12:19:56 4690
The Dalles 12:04:57 -10.8 NT Up 19.8 198.5 Really Low 11:49:57 - 12:19:57 4682
Maupin 12:04:55 -10.9 NT Up 20.2 198.6 Low 11:49:55 - 12:19:55 4665
Madras/Culver 12:04:55 -11.2 NT Up 20.7 198.6 Low 11:49:55 - 12:19:55 4642
Sisters 12:04:56 -11.7 NT Up 21.2 198.2 Low 11:49:56 - 12:19:56 4629
Redmond 12:04:54 -11.4 NT Up 21.1 198.6 Low 11:49:54 - 12:19:54 4627
Bend 12:04:55 -11.6 NT Up 21.3 198.5 Low 11:49:55 - 12:19:55 4618
Oregon Observatory 12:04:55 -11.8 NT Up 21.5 198.4 Low 11:49:55 - 12:19:55 4611
La Pine/Gilchrist 12:04:55 -11.9 NT Up 21.7 198.4 Low 11:49:55 - 12:19:55 4602
North Lake 12:04:50 -11.8 NT Up 22.0 199.0 Low 11:49:50 - 12:19:50 4583
Paisley 12:04:48 -11.8 NT Up 22.4 199.4 Low 11:49:48 - 12:19:48 4557
Chiloquin 12:04:55 -12.7 AT Up 22.9 198.2 Low 11:49:55 - 12:19:55 4553
Klamath Falls 12:04:54 -12.8 AT Up 23.2 198.3 Low 11:49:54 - 12:19:54 4537
Lakeview 12:04:48 -11.9 NT Up 22.9 199.7 Low 11:49:48 - 12:19:48 4534
Tulelake 12:04:52 -12.8 AT Up 23.4 198.6 Low 11:49:52 - 12:19:52 4525
Cedarville 12:04:45 -12.2 AT Up 23.5 199.9 Low 11:49:45 - 12:19:45 4503
Fall River/Burney 12:04:49 -13.2 AT Up 24.2 198.8 Low 11:49:49 - 12:19:49 4482
Susanville 12:04:45 -13.0 AT Up 24.6 199.6 Low 11:49:45 - 12:19:45 4450
Greenville 12:04:46 -13.3 AT Up 25.0 199.4 Low 11:49:46 - 12:19:46 4437
Gimple 12:04:46 -13.3 AT Up 24.9 199.5 Low 11:49:46 - 12:19:46 4437
Quincy 12:04:46 -13.4 AT Up 25.2 199.4 Low 11:49:46 - 12:19:46 4427
Portola 12:04:44 -13.2 AT Up 25.1 199.9 Low 11:49:44 - 12:19:44 4420
Reno 12:04:40 -12.9 AT Up 25.2 200.6 Low 11:49:40 - 12:19:40 4406
Carson City 12:04:39 -13.0 AT Up 25.6 200.6 Low 11:49:39 - 12:19:39 4387
Yerington 12:04:36 -12.7 AT Up 25.6 201.3 Low 11:49:36 - 12:19:36 4376
Gardnerville 12:04:38 -13.1 AT Up 25.8 200.7 Low 11:49:38 - 12:19:38 4375
Hawthorne 12:04:33 -12.5 AT Up 25.9 201.9 Low 11:49:33 - 12:19:33 4351
Niwot 12:03:36 -2.5 CT Up 19.7 213.8 Really Low 11:48:36 - 12:18:36 4348
Lee Vining 12:04:34 -13.1 AT Up 26.5 201.5 Low 11:49:34 - 12:19:34 4322
Tonopah 12:04:24 -11.8 NT Up 25.9 203.3 Low 11:49:24 - 12:19:24 4322
Bishop 12:04:29 -12.9 AT Up 26.9 202.3 Low 11:49:29 - 12:19:29 4288
Beatty 12:04:20 -12.0 NT Up 26.8 204.0 Low 11:49:20 - 12:19:20 4258
Lone Pine 12:04:26 -13.0 AT Up 27.5 202.8 Low 11:49:26 - 12:19:26 4246
Indian Springs 12:04:15 -11.3 NT Up 26.7 205.0 Low 11:49:15 - 12:19:15 4236
Henderson 12:04:11 -11.1 NT Up 27.0 205.8 Low 11:49:11 - 12:19:11 4202
CPSLO 12:04:37 -15.5 AT Up 29.4 200.5 Low 11:49:37 - 12:19:37 4177
Searchlight/Boulder City 12:04:09 -11.3 NT Up 27.5 206.0 Low 11:49:09 - 12:19:09 4169
Patrick 12:04:04 -10.5 NT Up 27.2 207.0 Low 11:49:04 - 12:19:04 4161
Laughlin/Bullhead City 12:04:07 -11.1 NT Up 27.6 206.4 Low 11:49:07 - 12:19:07 4150
Kingman/Dolan Springs 12:04:05 -10.7 NT Up 27.4 206.9 Low 11:49:05 - 12:19:05 4149
DCO 12:04:00 -10.1 NT Up 27.2 207.7 Low 11:49:00 - 12:19:00 4139
Mohave Valley 12:04:05 -11.2 NT Up 27.9 206.4 Low 11:49:05 - 12:19:05 4134
Lake Havasu City 12:04:04 -11.2 NT Up 28.1 206.8 Low 11:49:04 - 12:19:04 4110
Wildwood 12:04:24 -14.5 AT Up 30.0 202.8 Low 11:49:24 - 12:19:24 4102
Parker 12:04:03 -11.3 NT Up 28.4 206.9 Low 11:49:03 - 12:19:03 4088
Idyllwild 12:04:15 -13.3 AT Up 29.7 204.7 Low 11:49:15 - 12:19:15 4075
Blythe 12:04:04 -11.8 NT Up 29.0 206.7 Low 11:49:04 - 12:19:04 4058
Calipatria 12:04:08 -12.7 AT Up 29.8 206.0 Low 11:49:08 - 12:19:08 4033
Yuma 12:04:02 -12.2 AT Up 29.9 206.9 Low 11:49:02 - 12:19:02 4002

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 04HC79, (2019/04/22 12:06UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  5.50   8
23Tau Sco      16:35:53.0 -28:12:58  2.8  6.21   9
PPM 266088     16:53:25.2 -20:24:57  5.7  2.66   3
PPM 265937     16:46:29.2 -22:37:42  8.4  0.21   4
PPM 265936     16:46:27.3 -22:19:01  9.9  0.16   4
04HC79         16:46:01.4 -22:26:32 14.9         4
Positions are for J2000

Event circumstances last updated at 2018/09/23 17:42:24 UT

Marc W. Buie, Southwest Research Institute

RECON