RECON: TNO occultation with 99CC119

Event between 99CC119 and star GA0840:04204331 with event index number of 332623

Geocentric closest approach at 2020/04/11 04:28:14 UTC

J2000 position of star is 12:50:27.8 -05:22:46
Equinox of date position of star is 12:51:29.2 -05:29:13
Stellar brightness G=12.7, use SENSEUP=32
Star is 51 degrees from the moon. Moon is 87% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 43.0 AU from the Sun and 42.0 AU from the Earth.
The TNO is moving 24.9 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 203 seconds.
The 1-sigma cross-track error in the shadow position is 3041 km.
The sky-plane scale is 30481.9 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=221.8 km assuming a 5% albedo -- 8.9 sec chord
Diameter=90.6 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 99CC119, (2020/04/11 04:28UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:15.9 -11:16:00  1.0 10.35  41
PPM 195939     12:54:41.0 -04:20:05  6.5  1.40  51
PPM 195901     12:52:43.4 -06:14:35  8.4  0.81  51
PPM 195886     12:51:42.0 -05:39:20  9.5  0.17  51
99CC119        12:51:30.8 -05:29:23 12.7        51
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 4.4 sigma about the mid-time.
The median site spacing is 21.3 km RECON observability=1.0 and success probability=6.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 04:31:19 -16.2 AT Down 22.6 131.2 Low 04:16:19 - 04:46:19 5717
Kelowna 04:31:20 -16.3 AT Down 22.8 130.9 Low 04:16:20 - 04:46:20 5681
Summerland 04:31:21 -16.4 AT Down 22.8 130.7 Low 04:16:21 - 04:46:21 5654
Penticton 04:31:20 -16.5 AT Down 22.9 130.8 Low 04:16:20 - 04:46:20 5651
Oliver 04:31:20 -16.7 AT Down 23.2 130.6 Low 04:16:20 - 04:46:20 5622
Anarchist Mountain Observatory 04:31:21 -16.9 AT Down 23.4 130.8 Low 04:16:21 - 04:46:21 5612
Tonasket 04:31:20 -17.0 AT Down 23.5 130.6 Low 04:16:20 - 04:46:20 5584
Okanogan 04:31:22 -17.1 AT Down 23.7 130.4 Low 04:16:22 - 04:46:22 5552
Brewster 04:31:23 -17.2 AT Down 23.8 130.1 Low 04:16:23 - 04:46:23 5523
Manson/Chelan 04:31:24 -17.1 AT Down 23.7 129.7 Low 04:16:24 - 04:46:24 5496
Entiat 04:31:23 -17.2 AT Down 23.8 129.5 Low 04:16:23 - 04:46:23 5476
Victoria 04:31:29 -14.9 AT Down 21.6 126.9 Low 04:16:29 - 04:46:29 5472
Wenatchee 04:31:25 -17.3 AT Down 23.9 129.4 Low 04:16:25 - 04:46:25 5451
Ellensburg 04:31:26 -17.4 AT Down 24.1 129.0 Low 04:16:26 - 04:46:26 5410
Pasco 04:31:23 -18.6 Dark Down 25.3 130.1 Low 04:16:23 - 04:46:23 5381
Yakima 04:31:26 -17.6 AT Down 24.3 128.9 Low 04:16:26 - 04:46:26 5374
PNWRO 04:31:23 -18.9 Dark Down 25.6 130.2 Low 04:16:23 - 04:46:23 5366
Toppenish/White Swan 04:31:25 -17.8 AT Down 24.5 128.9 Low 04:16:25 - 04:46:25 5359
Goldendale 04:31:27 -17.9 AT Down 24.7 128.3 Low 04:16:27 - 04:46:27 5300
The Dalles 04:31:28 -17.8 AT Down 24.6 127.9 Low 04:16:28 - 04:46:28 5270
Niwot 04:30:55 -30.2 Dark Down 36.7 141.3 Up 04:15:55 - 04:45:55 5256
SwRI 04:30:55 -30.3 Dark Down 36.7 141.2 Up 04:15:55 - 04:45:55 5243
Maupin 04:31:28 -18.1 Dark Down 24.9 127.9 Low 04:16:28 - 04:46:28 5236
Redmond 04:31:29 -18.5 Dark Down 25.4 127.5 Low 04:16:29 - 04:46:29 5153
Sisters 04:31:29 -18.3 Dark Down 25.2 127.1 Low 04:16:29 - 04:46:29 5144
Bend 04:31:30 -18.6 Dark Down 25.5 127.3 Low 04:16:30 - 04:46:30 5130
Oregon Observatory 04:31:29 -18.6 Dark Down 25.5 127.1 Low 04:16:29 - 04:46:29 5111
La Pine/Gilchrist 04:31:30 -18.7 Dark Down 25.6 126.9 Low 04:16:30 - 04:46:30 5091
North Lake 04:31:29 -19.3 Dark Down 26.2 127.3 Low 04:16:29 - 04:46:29 5067
Paisley 04:31:29 -19.8 Dark Down 26.7 127.4 Low 04:16:29 - 04:46:29 5027
Lakeview 04:31:29 -20.2 Dark Down 27.2 127.4 Low 04:16:29 - 04:46:29 4986
Klamath Falls 04:31:33 -19.3 Dark Down 26.3 126.1 Low 04:16:33 - 04:46:33 4950
Cedarville 04:31:29 -20.6 Dark Down 27.7 127.3 Low 04:16:29 - 04:46:29 4930
Fall River/Burney 04:31:32 -20.1 Dark Down 27.2 126.0 Low 04:16:32 - 04:46:32 4852
Susanville 04:31:32 -20.9 Dark Down 28.0 126.4 Low 04:16:32 - 04:46:32 4814
Gimple 04:31:32 -21.0 Dark Down 28.1 126.1 Low 04:16:32 - 04:46:32 4782
Greenville 04:31:32 -20.9 Dark Down 28.0 126.0 Low 04:16:32 - 04:46:32 4780
Portola 04:31:32 -21.4 Dark Down 28.5 126.3 Low 04:16:32 - 04:46:32 4763
Quincy 04:31:32 -21.0 Dark Down 28.2 125.9 Low 04:16:32 - 04:46:32 4761
Reno 04:31:30 -21.9 Dark Down 29.1 126.7 Low 04:16:30 - 04:46:30 4756
Yerington 04:31:29 -22.7 Dark Down 29.8 127.1 Low 04:16:29 - 04:46:29 4724
Carson City 04:31:29 -22.2 Dark Down 29.3 126.6 Low 04:16:29 - 04:46:29 4723
Gardnerville 04:31:30 -22.3 Dark Down 29.5 126.5 Low 04:16:30 - 04:46:30 4702
Hawthorne 04:31:28 -23.3 Dark Down 30.4 127.3 Up 04:16:28 - 04:46:28 4696
Tonopah 04:31:24 -24.4 Dark Down 31.6 128.4 Up 04:16:24 - 04:46:24 4694
Lee Vining 04:31:29 -23.3 Dark Down 30.5 126.6 Up 04:16:29 - 04:46:29 4628
Indian Springs 04:31:21 -26.3 Dark Down 33.5 129.1 Up 04:16:21 - 04:46:21 4602
Beatty 04:31:24 -25.4 Dark Down 32.6 128.2 Up 04:16:24 - 04:46:24 4599
Bishop 04:31:28 -24.1 Dark Down 31.3 127.0 Up 04:16:28 - 04:46:28 4593
Henderson 04:31:20 -27.0 Dark Down 34.2 129.4 Up 04:16:20 - 04:46:20 4573
Patrick 04:31:18 -28.1 Dark Down 35.3 130.1 Up 04:16:18 - 04:46:18 4550
DCO 04:31:15 -28.8 Dark Down 35.9 130.6 Up 04:16:15 - 04:46:15 4544
Kingman/Dolan Springs 04:31:18 -28.1 Dark Down 35.3 129.8 Up 04:16:18 - 04:46:18 4523
Searchlight/Boulder City 04:31:20 -27.4 Dark Down 34.6 129.2 Up 04:16:20 - 04:46:20 4521
Laughlin/Bullhead City 04:31:19 -27.8 Dark Down 35.0 129.3 Up 04:16:19 - 04:46:19 4503
Mohave Valley 04:31:19 -28.0 Dark Down 35.2 129.2 Up 04:16:19 - 04:46:19 4478
George/Scottsdale 04:31:13 -30.5 Dark Down 37.7 131.1 Up 04:16:13 - 04:46:13 4455
Lake Havasu City 04:31:19 -28.4 Dark Down 35.6 129.2 Up 04:16:19 - 04:46:19 4448
Parker 04:31:19 -28.6 Dark Down 35.9 129.0 Up 04:16:19 - 04:46:19 4415
Blythe 04:31:19 -28.7 Dark Down 36.0 128.5 Up 04:16:19 - 04:46:19 4355
CPSLO 04:31:33 -23.6 Dark Down 31.0 124.0 Up 04:16:33 - 04:46:33 4327
Idyllwild 04:31:25 -27.2 Dark Down 34.5 126.6 Up 04:16:25 - 04:46:25 4299
Calipatria 04:31:22 -28.3 Dark Down 35.7 127.3 Up 04:16:22 - 04:46:22 4277
Wildwood 04:31:29 -25.7 Dark Down 33.1 125.2 Up 04:16:29 - 04:46:29 4273
Yuma 04:31:19 -29.2 Dark Down 36.5 127.9 Up 04:16:19 - 04:46:19 4265

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 99CC119, (2020/04/11 04:28UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 10.35  41
PPM 195939     12:53:38.1 -04:13:30  6.5  1.40  51
PPM 195901     12:51:40.4 -06:07:59  8.4  0.81  51
PPM 195886     12:50:39.1 -05:32:43  9.5  0.17  51
99CC119        12:50:27.8 -05:22:46 12.7        51
Positions are for J2000

Event circumstances last updated at 2019/10/15 22:15:51 UT

Marc W. Buie, Southwest Research Institute

RECON