RECON: TNO occultation with 136120

Event between (136120) 03LG7 and star GA0760:11924418 with event index number of 261571

Geocentric closest approach at 2020/05/22 06:51:50 UTC

J2000 position of star is 18:04:58.1 -12:09:56
Equinox of date position of star is 18:06:01.4 -12:09:47
Stellar brightness G=15.2, use SENSEUP=128
Star is 145 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=23.6

[RECON map]
TNO is 36.9 AU from the Sun and 36.1 AU from the Earth.
The TNO is moving 20.5 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 419 seconds.
The 1-sigma cross-track error in the shadow position is 4123 km.
The sky-plane scale is 26167.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=158.5 km assuming a 5% albedo -- 7.7 sec chord
Diameter=64.7 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is 3:1EE
 
 
 
 
 
 

Star training set for 136120, (2020/05/22 06:52UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.7 -26:28:32  0.9 26.60 165
35Eta Oph      17:11:32.9 -15:44:56  2.6 13.71 158
PPM 234113     18:10:52.9 -13:55:46  6.4  2.11 144
PPM 233945     18:03:30.9 -12:19:01  7.6  0.65 145
PPM 234000     18:06:14.0 -12:24:35  9.4  0.25 145
136120         18:06:06.7 -12:09:47 15.2       144
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 2.1 sigma about the mid-time.
The median site spacing is 19.0 km RECON observability=0.5 and success probability=5.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:55:08 -18.4 Dark Down 15.8 132.6 Really Low 06:40:08 - 07:10:08 75
Summerland 06:55:09 -18.4 Dark Down 15.7 132.2 Really Low 06:40:09 - 07:10:09 64
Penticton 06:55:09 -18.7 Dark Down 16.0 132.3 Really Low 06:40:09 - 07:10:09 46
Okanagan Falls 06:55:10 -18.9 Dark Down 16.1 132.3 Really Low 06:40:10 - 07:10:10 33
Oliver 06:55:10 -19.1 Dark Down 16.2 132.3 Really Low 06:40:10 - 07:10:10 21
Anarchist Mountain Observatory 06:55:10 -19.3 Dark Down 16.4 132.4 Really Low 06:40:10 - 07:10:10 14
Oroville 06:55:10 -19.3 Dark Down 16.4 132.3 Really Low 06:40:10 - 07:10:10 6
Tonasket 06:55:11 -19.6 Dark Down 16.6 132.3 Really Low 06:40:11 - 07:10:11 -10
Okanogan 06:55:12 -19.9 Dark Down 16.8 132.1 Really Low 06:40:12 - 07:10:12 -37
Brewster 06:55:13 -20.1 Dark Down 16.8 131.8 Really Low 06:40:13 - 07:10:13 -61
Manson/Chelan 06:55:14 -20.2 Dark Down 16.8 131.5 Really Low 06:40:14 - 07:10:14 -84
Entiat 06:55:15 -20.4 Dark Down 16.9 131.3 Really Low 06:40:15 - 07:10:15 -102
Wenatchee 06:55:16 -20.6 Dark Down 17.0 131.2 Really Low 06:40:16 - 07:10:16 -122
Ellensburg 06:55:17 -21.0 Dark Down 17.2 130.9 Really Low 06:40:17 - 07:10:17 -158
Pasco 06:55:16 -22.0 Dark Down 18.4 132.0 Really Low 06:40:16 - 07:10:16 -181
Yakima 06:55:18 -21.4 Dark Down 17.4 130.8 Really Low 06:40:18 - 07:10:18 -188
PNWRO 06:55:16 -22.3 Dark Down 18.7 132.1 Really Low 06:40:16 - 07:10:16 -194
Toppenish/White Swan 06:55:18 -21.6 Dark Down 17.7 130.9 Really Low 06:40:18 - 07:10:18 -200
George/Umatilla 06:55:17 -22.3 Dark Down 18.5 131.7 Really Low 06:40:17 - 07:10:17 -211
Goldendale 06:55:20 -22.1 Dark Down 17.8 130.4 Really Low 06:40:20 - 07:10:20 -251
The Dalles 06:55:22 -22.2 Dark Down 17.8 130.0 Really Low 06:40:22 - 07:10:22 -277
Maupin 06:55:23 -22.7 Dark Down 18.1 130.0 Really Low 06:40:23 - 07:10:23 -306
Niwot 06:54:46 -29.4 Dark Down 29.7 143.0 Low 06:39:46 - 07:09:46 -316
Madras/Culver 06:55:23 -23.2 Dark Down 18.4 129.9 Really Low 06:40:23 - 07:10:23 -349
Redmond 06:55:24 -23.5 Dark Down 18.6 129.7 Really Low 06:40:24 - 07:10:24 -378
Sisters 06:55:25 -23.4 Dark Down 18.4 129.4 Really Low 06:40:25 - 07:10:25 -385
Bend 06:55:25 -23.7 Dark Down 18.7 129.6 Really Low 06:40:25 - 07:10:25 -398
Oregon Observatory 06:55:26 -23.8 Dark Down 18.7 129.4 Really Low 06:40:26 - 07:10:26 -414
La Pine/Gilchrist 06:55:27 -24.0 Dark Down 18.8 129.3 Really Low 06:40:27 - 07:10:27 -432
North Lake 06:55:26 -24.5 Dark Down 19.4 129.7 Really Low 06:40:26 - 07:10:26 -451
Paisley 06:55:26 -25.1 Dark Down 20.0 129.9 Really Low 06:40:26 - 07:10:26 -486
Lakeview 06:55:27 -25.7 Dark Down 20.4 129.9 Low 06:40:27 - 07:10:27 -522
Chiloquin 06:55:30 -25.0 Dark Down 19.3 128.7 Really Low 06:40:30 - 07:10:30 -528
Klamath Falls 06:55:30 -25.3 Dark Down 19.6 128.7 Really Low 06:40:30 - 07:10:30 -553
Tulelake 06:55:30 -25.7 Dark Down 19.9 128.9 Really Low 06:40:30 - 07:10:30 -568
Cedarville 06:55:27 -26.3 Dark Down 21.0 129.8 Low 06:40:27 - 07:10:27 -570
Fall River/Burney 06:55:31 -26.5 Dark Down 20.6 128.7 Low 06:40:31 - 07:10:31 -639
Susanville 06:55:31 -27.3 Dark Down 21.4 129.1 Low 06:40:31 - 07:10:31 -673
Gimple 06:55:32 -27.5 Dark Down 21.4 128.9 Low 06:40:32 - 07:10:32 -701
Greenville 06:55:32 -27.5 Dark Down 21.4 128.8 Low 06:40:32 - 07:10:32 -703
Portola 06:55:31 -27.9 Dark Down 21.9 129.1 Low 06:40:31 - 07:10:31 -718
Quincy 06:55:32 -27.7 Dark Down 21.5 128.7 Low 06:40:32 - 07:10:32 -719
Reno 06:55:30 -28.3 Dark Down 22.4 129.5 Low 06:40:30 - 07:10:30 -723
Carson City 06:55:30 -28.7 Dark Down 22.7 129.4 Low 06:40:30 - 07:10:30 -753
Yerington 06:55:29 -29.0 Dark Down 23.2 129.9 Low 06:40:29 - 07:10:29 -753
Gardnerville 06:55:31 -28.9 Dark Down 22.9 129.4 Low 06:40:31 - 07:10:31 -772
Hawthorne 06:55:28 -29.6 Dark Down 23.8 130.2 Low 06:40:28 - 07:10:28 -778
Tonopah 06:55:26 -30.3 Dark Down 24.9 131.2 Low 06:40:26 - 07:10:26 -781
Lee Vining 06:55:31 -30.0 Dark Down 23.9 129.6 Low 06:40:31 - 07:10:31 -838
Indian Springs 06:55:23 -32.0 Dark Down 26.8 132.0 Low 06:40:23 - 07:10:23 -866
Beatty 06:55:26 -31.5 Dark Down 26.0 131.2 Low 06:40:26 - 07:10:26 -867
Bishop 06:55:30 -30.7 Dark Down 24.7 130.0 Low 06:40:30 - 07:10:30 -870
Henderson 06:55:22 -32.6 Dark Down 27.6 132.4 Low 06:40:22 - 07:10:22 -893
Patrick 06:55:19 -33.4 Dark Down 28.7 133.1 Low 06:40:19 - 07:10:19 -917
DCO 06:55:17 -33.8 Dark Down 29.3 133.6 Low 06:40:17 - 07:10:17 -925
Lone Pine 06:55:30 -31.5 Dark Down 25.4 130.0 Low 06:40:30 - 07:10:30 -926
Searchlight/Boulder City 06:55:22 -33.2 Dark Down 28.0 132.2 Low 06:40:22 - 07:10:22 -941
Kingman/Dolan Springs 06:55:20 -33.6 Dark Down 28.7 132.9 Low 06:40:20 - 07:10:20 -941
Laughlin/Bullhead City 06:55:22 -33.6 Dark Down 28.4 132.4 Low 06:40:22 - 07:10:22 -957
Mohave Valley 06:55:22 -33.8 Dark Down 28.6 132.3 Low 06:40:22 - 07:10:22 -980
Lake Havasu City 06:55:22 -34.3 Dark Down 29.0 132.4 Low 06:40:22 - 07:10:22 -1008
Parker 06:55:22 -34.6 Dark Down 29.3 132.3 Low 06:40:22 - 07:10:22 -1038
Blythe 06:55:23 -35.1 Dark Down 29.5 131.8 Low 06:40:23 - 07:10:23 -1091
CPSLO 06:55:39 -32.2 Dark Down 24.6 127.4 Low 06:40:39 - 07:10:39 -1106
Idyllwild 06:55:30 -34.6 Dark Down 28.1 130.0 Low 06:40:30 - 07:10:30 -1138
Wildwood 06:55:35 -33.8 Dark Down 26.6 128.6 Low 06:40:35 - 07:10:35 -1157
Calipatria 06:55:27 -35.4 Dark Down 29.2 130.8 Low 06:40:27 - 07:10:27 -1160
Yuma 06:55:25 -36.0 Dark Down 30.1 131.4 Up 06:40:25 - 07:10:25 -1174

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 136120, (2020/05/22 06:52UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 26.60 165
35Eta Oph      17:10:22.7 -15:43:29  2.6 13.71 158
PPM 234113     18:09:43.4 -13:56:04  6.4  2.11 144
PPM 233945     18:02:22.2 -12:19:06  7.6  0.65 145
PPM 234000     18:05:05.3 -12:24:45  9.4  0.25 145
136120         18:04:58.1 -12:09:56 15.2       145
Positions are for J2000

Event circumstances last updated at 2018/10/26 21:09:30 UT

Marc W. Buie, Southwest Research Institute

RECON