RECON: TNO occultation with 136120

Event between (136120) 03LG7 and star GA0760:10354245 with event index number of 203499

Geocentric closest approach at 2019/07/20 05:45:00 UTC

J2000 position of star is 17:52:33.5 -12:37:08
Equinox of date position of star is 17:53:39.1 -12:37:20
Stellar brightness G=16.0, use SENSEUP=128
Star is 67 degrees from the moon. Moon is 90% illuminated.
TNO apparent brightness V=23.6

[RECON map]
TNO is 36.7 AU from the Sun and 35.8 AU from the Earth.
The TNO is moving 20.2 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 634 seconds.
The 1-sigma cross-track error in the shadow position is 3911 km.
The sky-plane scale is 25953.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=158.5 km assuming a 5% albedo -- 7.8 sec chord
Diameter=64.7 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is 3:1EE
 
 
 
 
 
 

Star training set for 136120, (2019/07/20 05:45UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.5 -26:28:25  0.9 23.91  84
35Eta Oph      17:11:30.0 -15:44:52  2.6 10.68  77
PPM 233722     17:55:12.9 -11:20:24  6.5  1.34  67
PPM 233639     17:51:01.4 -12:36:49  8.1  0.64  68
PPM 233698     17:53:25.6 -12:35:32  9.8  0.06  67
136120         17:53:39.5 -12:37:20 16.0        67
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 1.4 sigma about the mid-time.
The median site spacing is 14.6 km RECON observability=0.8 and success probability=5.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 05:45:02 -13.0 AT Up 27.4 176.1 Low 05:30:02 - 06:00:02 4055
Summerland 05:45:04 -13.1 AT Up 27.7 175.8 Low 05:30:04 - 06:00:04 4040
Penticton 05:45:03 -13.2 AT Up 27.8 175.9 Low 05:30:03 - 06:00:03 4037
Okanagan Falls 05:45:04 -13.4 AT Up 27.9 175.9 Low 05:30:04 - 06:00:04 4027
Oliver 05:45:04 -13.5 AT Up 28.1 175.9 Low 05:30:04 - 06:00:04 4018
Anarchist Mountain Observatory 05:45:03 -13.7 AT Up 28.3 176.1 Low 05:30:03 - 06:00:03 4009
Oroville 05:45:03 -13.8 AT Up 28.4 176.0 Low 05:30:03 - 06:00:03 4005
Tonasket 05:45:03 -14.0 AT Up 28.6 176.0 Low 05:30:03 - 06:00:03 3993
Okanogan 05:45:04 -14.2 AT Up 28.9 175.8 Low 05:30:04 - 06:00:04 3975
Brewster 05:45:05 -14.4 AT Up 29.2 175.6 Low 05:30:05 - 06:00:05 3961
Manson/Chelan 05:45:05 -14.4 AT Up 29.4 175.2 Low 05:30:05 - 06:00:05 3950
Entiat 05:45:07 -14.6 AT Up 29.6 175.1 Low 05:30:07 - 06:00:07 3938
Wenatchee 05:45:07 -14.7 AT Up 29.8 175.0 Low 05:30:07 - 06:00:07 3924
Ellensburg 05:45:08 -15.0 AT Up 30.2 174.7 Up 05:30:08 - 06:00:08 3901
Yakima 05:45:08 -15.3 AT Up 30.6 174.7 Up 05:30:08 - 06:00:08 3878
Toppenish/White Swan 05:45:08 -15.6 AT Up 30.9 174.9 Up 05:30:08 - 06:00:08 3866
Pasco 05:45:03 -16.1 AT Up 31.1 176.3 Up 05:30:03 - 06:00:03 3857
PNWRO 05:45:02 -16.4 AT Up 31.3 176.5 Up 05:30:02 - 06:00:02 3842
George/Umatilla 05:45:04 -16.3 AT Up 31.4 176.0 Up 05:30:04 - 06:00:04 3838
Goldendale 05:45:10 -15.8 AT Up 31.4 174.3 Up 05:30:10 - 06:00:10 3835
The Dalles 05:45:11 -15.9 AT Up 31.6 173.9 Up 05:30:11 - 06:00:11 3822
Maupin 05:45:11 -16.3 AT Up 32.0 174.0 Up 05:30:11 - 06:00:11 3798
Madras/Culver 05:45:11 -16.7 AT Up 32.6 173.9 Up 05:30:11 - 06:00:11 3765
Sisters 05:45:14 -16.8 AT Up 32.9 173.4 Up 05:30:14 - 06:00:14 3746
Redmond 05:45:12 -17.0 AT Up 32.9 173.8 Up 05:30:12 - 06:00:12 3744
Bend 05:45:13 -17.1 AT Up 33.1 173.7 Up 05:30:13 - 06:00:13 3731
Oregon Observatory 05:45:13 -17.2 AT Up 33.3 173.5 Up 05:30:13 - 06:00:13 3720
La Pine/Gilchrist 05:45:14 -17.3 AT Up 33.5 173.4 Up 05:30:14 - 06:00:14 3708
North Lake 05:45:11 -17.9 AT Up 33.9 174.1 Up 05:30:11 - 06:00:11 3680
Paisley 05:45:10 -18.5 Dark Up 34.5 174.5 Up 05:30:10 - 06:00:10 3645
Chiloquin 05:45:15 -18.1 Dark Up 34.5 172.9 Up 05:30:15 - 06:00:15 3639
Klamath Falls 05:45:15 -18.4 Dark Up 34.9 173.0 Up 05:30:15 - 06:00:15 3617
Lakeview 05:45:10 -19.0 Dark Up 35.0 174.7 Up 05:30:10 - 06:00:10 3613
Tulelake 05:45:14 -18.7 Dark Up 35.2 173.3 Up 05:30:14 - 06:00:14 3600
Cedarville 05:45:09 -19.6 Dark Up 35.7 174.8 Up 05:30:09 - 06:00:09 3570
Fall River/Burney 05:45:14 -19.5 Dark Up 36.1 173.3 Up 05:30:14 - 06:00:14 3541
Susanville 05:45:11 -20.3 Dark Up 36.8 174.2 Up 05:30:11 - 06:00:11 3498
Greenville 05:45:13 -20.4 Dark Up 37.0 173.8 Up 05:30:13 - 06:00:13 3480
Gimple 05:45:13 -20.5 Dark Up 37.0 173.9 Up 05:30:13 - 06:00:13 3480
Quincy 05:45:13 -20.6 Dark Up 37.2 173.8 Up 05:30:13 - 06:00:13 3466
Portola 05:45:11 -20.9 Dark Up 37.4 174.4 Up 05:30:11 - 06:00:11 3457
Reno 05:45:08 -21.4 Dark Up 37.7 175.1 Up 05:30:08 - 06:00:08 3438
Niwot 05:44:08 -26.2 Dark Up 36.4 192.7 Up 05:29:08 - 05:59:08 3415
Carson City 05:45:08 -21.7 Dark Up 38.1 175.1 Up 05:30:08 - 06:00:08 3413
SwRI 05:44:08 -26.3 Dark Up 36.5 192.6 Up 05:29:08 - 05:59:08 3409
Yerington 05:45:06 -22.1 Dark Up 38.3 175.9 Up 05:30:06 - 06:00:06 3399
Gardnerville 05:45:08 -21.9 Dark Up 38.3 175.2 Up 05:30:08 - 06:00:08 3397
Hawthorne 05:45:04 -22.8 Dark Up 38.8 176.5 Up 05:30:04 - 06:00:04 3366
Tonopah 05:44:58 -23.8 Dark Up 39.3 178.3 Up 05:29:58 - 05:59:58 3329
Lee Vining 05:45:06 -23.0 Dark Up 39.3 175.9 Up 05:30:06 - 06:00:06 3327
Bishop 05:45:03 -23.8 Dark Up 40.0 176.8 Up 05:30:03 - 06:00:03 3283
Beatty 05:44:56 -24.9 Dark Up 40.5 178.8 Up 05:29:56 - 05:59:56 3246
Lone Pine 05:45:02 -24.6 Dark Up 40.7 177.1 Up 05:30:02 - 06:00:02 3228
Indian Springs 05:44:51 -25.7 Dark Up 40.8 180.2 Up 05:29:51 - 05:59:51 3219
Henderson 05:44:49 -26.4 Dark Up 41.3 181.0 Up 05:29:49 - 05:59:49 3177
CPSLO 05:45:14 -24.4 Dark Up 41.9 173.7 Up 05:30:14 - 06:00:14 3138
Searchlight/Boulder City 05:44:48 -26.9 Dark Up 41.9 181.1 Up 05:29:48 - 05:59:48 3135
Patrick 05:44:44 -27.4 Dark Up 41.9 182.5 Up 05:29:44 - 05:59:44 3127
Laughlin/Bullhead City 05:44:47 -27.3 Dark Up 42.2 181.6 Up 05:29:47 - 05:59:47 3112
Kingman/Dolan Springs 05:44:44 -27.5 Dark Up 42.2 182.3 Up 05:29:44 - 05:59:44 3111
DCO 05:44:40 -28.0 Dark Up 42.2 183.4 Up 05:29:40 - 05:59:40 3101
Mohave Valley 05:44:47 -27.5 Dark Up 42.5 181.6 Up 05:29:47 - 05:59:47 3091
Lake Havasu City 05:44:46 -28.0 Dark Up 42.9 181.9 Up 05:29:46 - 05:59:46 3060
Wildwood 05:45:05 -26.4 Dark Up 43.2 176.3 Up 05:30:05 - 06:00:05 3043
Parker 05:44:46 -28.3 Dark Up 43.2 182.0 Up 05:29:46 - 05:59:46 3033
Idyllwild 05:44:57 -27.6 Dark Up 43.6 178.8 Up 05:29:57 - 05:59:57 3011
Blythe 05:44:47 -28.6 Dark Up 43.7 181.6 Up 05:29:47 - 05:59:47 2994
Calipatria 05:44:51 -28.6 Dark Up 44.3 180.4 Up 05:29:51 - 05:59:51 2960
Yuma 05:44:47 -29.4 Dark Up 44.7 181.6 Up 05:29:47 - 05:59:47 2923

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, (2019/07/20 05:45UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 23.91  84
35Eta Oph      17:10:22.7 -15:43:29  2.6 10.68  77
PPM 233722     17:54:07.6 -11:20:15  6.5  1.34  67
PPM 233639     17:49:55.5 -12:36:33  8.1  0.64  68
PPM 233698     17:52:19.7 -12:35:20  9.8  0.06  67
136120         17:52:33.5 -12:37:08 16.0        67
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:26:43 UT

Marc W. Buie, Southwest Research Institute

RECON