RECON: TNO occultation with 04KC19

Event between 04KC19 and star GA0680:22187562 with event index number of 259928

Geocentric closest approach at 2020/05/13 09:09:22 UTC

J2000 position of star is 18:03:05.1 -20:37:46
Equinox of date position of star is 18:04:14.7 -20:37:40
Stellar brightness G=15.8, use SENSEUP=128
Star is 39 degrees from the moon. Moon is 62% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 30.4 AU from the Sun and 29.6 AU from the Earth.
The TNO is moving 17.1 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 670 seconds.
The 1-sigma cross-track error in the shadow position is 1752 km.
The sky-plane scale is 21490.2 km/arcsec.

The TNO has an absolute magnitude Hv=8.5
Diameter=121.3 km assuming a 5% albedo -- 7.1 sec chord
Diameter=49.5 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04KC19, (2020/05/13 09:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.6 -26:28:32  0.9 22.21  59
Nunki          18:56:31.6 -26:16:11  2.0 13.23  27
PPM 267640     18:01:12.8 -20:20:22  6.0  0.78  40
PPM 267726     18:03:50.3 -20:44:10  7.3  0.15  39
04KC19         18:04:18.0 -20:37:40 15.8        39
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 1.3 sigma about the mid-time.
The median site spacing is 10.9 km RECON observability=0.8 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)
Kelowna 09:11:14 -19.5 Dark Up 17.1 159.7 Really Low 08:56:14 - 09:26:14 10845
Summerland 09:11:15 -19.8 Dark Up 17.3 159.4 Really Low 08:56:15 - 09:26:15 10828
Penticton 09:11:15 -19.8 Dark Up 17.4 159.5 Really Low 08:56:15 - 09:26:15 10827
Okanagan Falls 09:11:16 -20.0 Dark Up 17.6 159.5 Really Low 08:56:16 - 09:26:16 10819
Oliver 09:11:14 -20.2 Dark Up 17.7 159.4 Really Low 08:56:14 - 09:26:14 10812
Anarchist Mountain Observatory 09:11:14 -20.3 Dark Up 17.9 159.6 Really Low 08:56:14 - 09:26:14 10808
Oroville 09:11:16 -20.4 Dark Up 18.0 159.5 Really Low 08:56:16 - 09:26:16 10803
Tonasket 09:11:15 -20.6 Dark Up 18.2 159.5 Really Low 08:56:15 - 09:26:15 10793
Okanogan 09:11:16 -20.9 Dark Up 18.5 159.3 Really Low 08:56:16 - 09:26:16 10777
Brewster 09:11:17 -21.2 Dark Up 18.7 159.1 Really Low 08:56:17 - 09:26:17 10762
Manson/Chelan 09:11:19 -21.5 Dark Up 18.8 158.7 Really Low 08:56:19 - 09:26:19 10747
Entiat 09:11:21 -21.7 Dark Up 19.0 158.7 Really Low 08:56:21 - 09:26:21 10736
Wenatchee 09:11:20 -22.0 Dark Up 19.2 158.5 Really Low 08:56:20 - 09:26:20 10723
Ellensburg 09:11:21 -22.4 Dark Up 19.6 158.3 Really Low 08:56:21 - 09:26:21 10701
Pasco 09:11:17 -22.8 Dark Up 20.6 159.5 Low 08:56:17 - 09:26:17 10687
Yakima 09:11:22 -22.8 Dark Up 19.9 158.2 Really Low 08:56:22 - 09:26:22 10681
PNWRO 09:11:16 -23.0 Dark Up 20.9 159.7 Low 08:56:16 - 09:26:16 10679
Toppenish/White Swan 09:11:22 -23.0 Dark Up 20.2 158.3 Low 08:56:22 - 09:26:22 10674
George/Umatilla 09:11:19 -23.2 Dark Up 20.9 159.3 Low 08:56:19 - 09:26:19 10668
Goldendale 09:11:25 -23.6 Dark Up 20.6 157.9 Low 08:56:25 - 09:26:25 10640
The Dalles 09:11:27 -23.9 Dark Up 20.7 157.5 Low 08:56:27 - 09:26:27 10624
Maupin 09:11:26 -24.3 Dark Up 21.1 157.5 Low 08:56:26 - 09:26:26 10605
Madras/Culver 09:11:27 -24.8 Dark Up 21.6 157.4 Low 08:56:27 - 09:26:27 10577
Redmond 09:11:28 -25.2 Dark Up 21.9 157.3 Low 08:56:28 - 09:26:28 10558
Sisters 09:11:30 -25.2 Dark Up 21.8 156.9 Low 08:56:30 - 09:26:30 10552
Niwot 09:10:21 -23.6 Dark Up 28.9 172.8 Low 08:55:21 - 09:25:21 10547
Bend 09:11:28 -25.4 Dark Up 22.1 157.1 Low 08:56:28 - 09:26:28 10544
SwRI 09:10:21 -23.8 Dark Up 29.0 172.7 Low 08:55:21 - 09:25:21 10540
Oregon Observatory 09:11:30 -25.6 Dark Up 22.2 157.0 Low 08:56:30 - 09:26:30 10533
La Pine/Gilchrist 09:11:30 -25.8 Dark Up 22.4 156.9 Low 08:56:30 - 09:26:30 10522
North Lake 09:11:29 -26.1 Dark Up 22.9 157.4 Low 08:56:29 - 09:26:29 10508
Paisley 09:11:28 -26.5 Dark Up 23.5 157.7 Low 08:56:28 - 09:26:28 10485
Lakeview 09:11:28 -26.9 Dark Up 24.1 157.8 Low 08:56:28 - 09:26:28 10461
Chiloquin 09:11:34 -26.9 Dark Up 23.3 156.4 Low 08:56:34 - 09:26:34 10456
Klamath Falls 09:11:35 -27.2 Dark Up 23.6 156.4 Low 08:56:35 - 09:26:35 10439
Tulelake 09:11:32 -27.4 Dark Up 24.0 156.6 Low 08:56:32 - 09:26:32 10429
Cedarville 09:11:28 -27.5 Dark Up 24.7 157.8 Low 08:56:28 - 09:26:28 10427
Fall River/Burney 09:11:33 -28.3 Dark Up 24.8 156.6 Low 08:56:33 - 09:26:33 10380
Susanville 09:11:31 -28.7 Dark Up 25.6 157.2 Low 08:56:31 - 09:26:31 10356
Gimple 09:11:32 -29.0 Dark Up 25.8 156.9 Low 08:56:32 - 09:26:32 10337
Greenville 09:11:33 -29.0 Dark Up 25.8 156.8 Low 08:56:33 - 09:26:33 10335
Portola 09:11:31 -29.2 Dark Up 26.2 157.2 Low 08:56:31 - 09:26:31 10325
Quincy 09:11:34 -29.2 Dark Up 26.0 156.8 Low 08:56:34 - 09:26:34 10324
Reno 09:11:29 -29.3 Dark Up 26.7 157.8 Low 08:56:29 - 09:26:29 10320
Carson City 09:11:28 -29.6 Dark Up 27.0 157.8 Low 08:56:28 - 09:26:28 10299
Yerington 09:11:26 -29.6 Dark Up 27.4 158.4 Low 08:56:26 - 09:26:26 10298
Gardnerville 09:11:29 -29.8 Dark Up 27.2 157.8 Low 08:56:29 - 09:26:29 10285
Hawthorne 09:11:25 -29.9 Dark Up 28.0 158.8 Low 08:56:25 - 09:26:25 10279
Tonopah 09:11:18 -29.9 Dark Up 28.8 160.1 Low 08:56:18 - 09:26:18 10274
Lee Vining 09:11:27 -30.6 Dark Up 28.3 158.2 Low 08:56:27 - 09:26:27 10237
Bishop 09:11:25 -30.9 Dark Up 29.1 158.8 Low 08:56:25 - 09:26:25 10212
Beatty 09:11:18 -30.8 Dark Up 30.0 160.4 Low 08:56:18 - 09:26:18 10210
Indian Springs 09:11:13 -30.7 Dark Up 30.6 161.4 Up 08:56:13 - 09:26:13 10207
Henderson 09:11:09 -31.0 Dark Up 31.3 162.0 Up 08:56:09 - 09:26:09 10184
Lone Pine 09:11:24 -31.5 Dark Up 29.9 159.0 Low 08:56:24 - 09:26:24 10170
Patrick 09:11:04 -31.1 Dark Up 32.1 163.1 Up 08:56:04 - 09:26:04 10161
DCO 09:11:01 -31.1 Dark Up 32.6 163.8 Up 08:56:01 - 09:26:01 10152
Searchlight/Boulder City 09:11:09 -31.5 Dark Up 31.8 162.0 Up 08:56:09 - 09:26:09 10148
Kingman/Dolan Springs 09:11:07 -31.4 Dark Up 32.3 162.8 Up 08:56:07 - 09:26:07 10144
Laughlin/Bullhead City 09:11:09 -31.6 Dark Up 32.2 162.3 Up 08:56:09 - 09:26:09 10135
Mohave Valley 09:11:08 -31.9 Dark Up 32.4 162.2 Up 08:56:08 - 09:26:08 10117
Lake Havasu City 09:11:07 -32.1 Dark Up 32.9 162.4 Up 08:56:07 - 09:26:07 10095
Parker 09:11:07 -32.4 Dark Up 33.2 162.4 Up 08:56:07 - 09:26:07 10072
CPSLO 09:11:37 -33.5 Dark Up 30.3 156.1 Up 08:56:37 - 09:26:37 10042
Blythe 09:11:09 -33.0 Dark Up 33.7 162.0 Up 08:56:09 - 09:26:09 10033
Idyllwild 09:11:20 -33.7 Dark Up 33.0 159.8 Up 08:56:20 - 09:26:20 10007
Wildwood 09:11:29 -34.0 Dark Up 32.1 157.9 Up 08:56:29 - 09:26:29 9999
Calipatria 09:11:15 -33.8 Dark Up 33.9 160.9 Up 08:56:15 - 09:26:15 9985
Yuma 09:11:10 -33.8 Dark Up 34.5 161.7 Up 08:56:10 - 09:26:10 9970

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 04KC19, (2020/05/13 09:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 22.21  59
Nunki          18:55:15.9 -26:17:49  2.0 13.23  27
PPM 267640     18:00:00.1 -20:20:23  6.0  0.78  40
PPM 267726     18:02:37.3 -20:44:16  7.3  0.15  39
04KC19         18:03:05.1 -20:37:46 15.8        39
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:37:19 UT

Marc W. Buie, Southwest Research Institute

RECON