RECON: TNO occultation with 07LG38

Event between 07LG38 and star GA0920:06627412 with event index number of 263628

Geocentric closest approach at 2020/05/11 09:30:49 UTC

J2000 position of star is 18:10:51.3 +02:27:43
Equinox of date position of star is 18:11:48.1 +02:28:02
Stellar brightness G=15.6, use SENSEUP=128
Star is 29 degrees from the moon. Moon is 81% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 35.4 AU from the Sun and 34.8 AU from the Earth.
The TNO is moving 17.7 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 361 seconds.
The 1-sigma cross-track error in the shadow position is 4664 km.
The sky-plane scale is 25206.5 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=160.0 km assuming a 5% albedo -- 9.1 sec chord
Diameter=65.3 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 07LG38, (2020/05/11 09:31UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.5 -26:28:32  0.9 37.88  34
60Bet Oph      17:44:28.8 +04:33:37  2.8  7.15  34
PPM 165298     18:10:55.2 +03:07:26  6.1  0.70  30
PPM 165305     18:11:09.8 +02:23:10  8.3  0.20  29
PPM 165315     18:11:24.6 +02:32:06  8.7  0.14  29
07LG38         18:11:52.8 +02:28:04 15.6        29
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 2.5 sigma about the mid-time.
The median site spacing is 19.0 km RECON observability=1.0 and success probability=7.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 09:33:36 -18.6 Dark Up 39.9 154.8 Up 09:18:36 - 09:48:36 -2574
Summerland 09:33:38 -18.7 Dark Up 39.8 154.4 Up 09:18:38 - 09:48:38 -2586
Penticton 09:33:37 -18.9 Dark Up 40.2 154.5 Up 09:18:37 - 09:48:37 -2607
Okanagan Falls 09:33:37 -19.1 Dark Up 40.3 154.4 Up 09:18:37 - 09:48:37 -2623
Oliver 09:33:37 -19.3 Dark Up 40.5 154.4 Up 09:18:37 - 09:48:37 -2636
Anarchist Mountain Observatory 09:33:36 -19.4 Dark Up 40.7 154.5 Up 09:18:36 - 09:48:36 -2645
Oroville 09:33:37 -19.5 Dark Up 40.7 154.4 Up 09:18:37 - 09:48:37 -2653
Tonasket 09:33:37 -19.7 Dark Up 40.9 154.3 Up 09:18:37 - 09:48:37 -2672
Okanogan 09:33:37 -20.0 Dark Up 41.2 154.0 Up 09:18:37 - 09:48:37 -2703
Brewster 09:33:38 -20.3 Dark Up 41.4 153.7 Up 09:18:38 - 09:48:38 -2730
Manson/Chelan 09:33:39 -20.6 Dark Up 41.5 153.1 Up 09:18:39 - 09:48:39 -2756
Entiat 09:33:39 -20.8 Dark Up 41.6 152.9 Up 09:18:39 - 09:48:39 -2776
Wenatchee 09:33:39 -21.1 Dark Up 41.8 152.7 Up 09:18:39 - 09:48:39 -2800
Ellensburg 09:33:40 -21.5 Dark Up 42.1 152.3 Up 09:18:40 - 09:48:40 -2840
Pasco 09:33:34 -21.8 Dark Up 43.2 153.8 Up 09:18:34 - 09:48:34 -2868
Yakima 09:33:40 -21.9 Dark Up 42.5 152.1 Up 09:18:40 - 09:48:40 -2874
PNWRO 09:33:34 -21.9 Dark Up 43.5 154.0 Up 09:18:34 - 09:48:34 -2883
Toppenish/White Swan 09:33:39 -22.0 Dark Up 42.7 152.2 Up 09:18:39 - 09:48:39 -2888
George/Umatilla 09:33:36 -22.2 Dark Up 43.5 153.3 Up 09:18:36 - 09:48:36 -2901
Goldendale 09:33:41 -22.7 Dark Up 43.1 151.4 Up 09:18:41 - 09:48:41 -2946
The Dalles 09:33:43 -23.0 Dark Up 43.2 150.8 Up 09:18:43 - 09:48:43 -2974
Maupin 09:33:42 -23.3 Dark Up 43.6 150.8 Up 09:18:42 - 09:48:42 -3007
Niwot 09:32:32 -21.5 Dark Up 52.1 171.7 Up 09:17:32 - 09:47:32 -3009
Madras/Culver 09:33:41 -23.8 Dark Up 44.0 150.5 Up 09:18:41 - 09:48:41 -3056
Redmond 09:33:43 -24.2 Dark Up 44.3 150.2 Up 09:18:43 - 09:48:43 -3088
Sisters 09:33:43 -24.3 Dark Up 44.2 149.7 Up 09:18:43 - 09:48:43 -3096
Bend 09:33:43 -24.4 Dark Up 44.5 149.9 Up 09:18:43 - 09:48:43 -3110
Oregon Observatory 09:33:44 -24.6 Dark Up 44.6 149.7 Up 09:18:44 - 09:48:44 -3129
La Pine/Gilchrist 09:33:44 -24.8 Dark Up 44.7 149.5 Up 09:18:44 - 09:48:44 -3148
North Lake 09:33:41 -25.0 Dark Up 45.3 150.1 Up 09:18:41 - 09:48:41 -3171
Paisley 09:33:39 -25.4 Dark Up 45.9 150.3 Up 09:18:39 - 09:48:39 -3211
Lakeview 09:33:38 -25.8 Dark Up 46.4 150.3 Up 09:18:38 - 09:48:38 -3251
Chiloquin 09:33:44 -25.9 Dark Up 45.5 148.5 Up 09:18:44 - 09:48:44 -3256
Klamath Falls 09:33:45 -26.2 Dark Up 45.9 148.4 Up 09:18:45 - 09:48:45 -3284
Tulelake 09:33:43 -26.4 Dark Up 46.2 148.6 Up 09:18:43 - 09:48:43 -3300
Cedarville 09:33:37 -26.4 Dark Up 47.1 150.1 Up 09:18:37 - 09:48:37 -3305
Fall River/Burney 09:33:43 -27.2 Dark Up 47.0 148.2 Up 09:18:43 - 09:48:43 -3380
Susanville 09:33:40 -27.5 Dark Up 47.8 148.9 Up 09:18:40 - 09:48:40 -3418
Gimple 09:33:40 -27.8 Dark Up 48.0 148.4 Up 09:18:40 - 09:48:40 -3448
Greenville 09:33:40 -27.9 Dark Up 48.0 148.3 Up 09:18:40 - 09:48:40 -3451
Portola 09:33:38 -28.0 Dark Up 48.4 148.8 Up 09:18:38 - 09:48:38 -3468
Quincy 09:33:40 -28.1 Dark Up 48.1 148.2 Up 09:18:40 - 09:48:40 -3469
Reno 09:33:36 -28.0 Dark Up 48.9 149.5 Up 09:18:36 - 09:48:36 -3474
Carson City 09:33:35 -28.3 Dark Up 49.2 149.3 Up 09:18:35 - 09:48:35 -3506
Yerington 09:33:32 -28.3 Dark Up 49.6 150.1 Up 09:18:32 - 09:48:32 -3507
Gardnerville 09:33:35 -28.6 Dark Up 49.4 149.3 Up 09:18:35 - 09:48:35 -3528
Hawthorne 09:33:30 -28.5 Dark Up 50.2 150.6 Up 09:18:30 - 09:48:30 -3535
Tonopah 09:33:24 -28.4 Dark Up 51.2 152.3 Up 09:18:24 - 09:48:24 -3538
Lee Vining 09:33:32 -29.2 Dark Up 50.5 149.5 Up 09:18:32 - 09:48:32 -3600
Indian Springs 09:33:16 -29.1 Dark Up 53.0 153.7 Up 09:18:16 - 09:48:16 -3630
Beatty 09:33:20 -29.2 Dark Up 52.4 152.3 Up 09:18:20 - 09:48:20 -3631
Bishop 09:33:28 -29.5 Dark Up 51.3 150.2 Up 09:18:28 - 09:48:28 -3635
Henderson 09:33:12 -29.3 Dark Up 53.8 154.5 Up 09:18:12 - 09:48:12 -3660
Patrick 09:33:06 -29.3 Dark Up 54.7 155.9 Up 09:18:06 - 09:48:06 -3684
DCO 09:33:03 -29.2 Dark Up 55.2 156.9 Up 09:18:03 - 09:48:03 -3691
Lone Pine 09:33:26 -30.0 Dark Up 52.1 150.2 Up 09:18:26 - 09:48:26 -3697
Kingman/Dolan Springs 09:33:07 -29.6 Dark Up 54.8 155.5 Up 09:18:07 - 09:48:07 -3711
Searchlight/Boulder City 09:33:11 -29.7 Dark Up 54.3 154.3 Up 09:18:11 - 09:48:11 -3711
Laughlin/Bullhead City 09:33:10 -29.8 Dark Up 54.7 154.6 Up 09:18:10 - 09:48:10 -3728
Mohave Valley 09:33:09 -30.0 Dark Up 54.9 154.5 Up 09:18:09 - 09:48:09 -3753
Lake Havasu City 09:33:07 -30.3 Dark Up 55.4 154.6 Up 09:18:07 - 09:48:07 -3783
Parker 09:33:07 -30.6 Dark Up 55.7 154.4 Up 09:18:07 - 09:48:07 -3815
Blythe 09:33:08 -31.1 Dark Up 56.1 153.6 Up 09:18:08 - 09:48:08 -3874
CPSLO 09:33:37 -32.1 Dark Up 52.1 145.6 Up 09:18:37 - 09:48:37 -3893
Idyllwild 09:33:17 -32.0 Dark Up 55.1 150.3 Up 09:18:17 - 09:48:17 -3927
Wildwood 09:33:26 -32.4 Dark Up 54.0 147.7 Up 09:18:26 - 09:48:26 -3949
Calipatria 09:33:11 -32.0 Dark Up 56.1 151.7 Up 09:18:11 - 09:48:11 -3949
Yuma 09:33:07 -31.9 Dark Up 56.9 152.9 Up 09:18:07 - 09:48:07 -3963

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 07LG38, (2020/05/11 09:31UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 37.88  34
60Bet Oph      17:43:28.3 +04:34:05  2.8  7.15  34
PPM 165298     18:09:54.1 +03:07:08  6.1  0.70  30
PPM 165305     18:10:08.3 +02:22:51  8.3  0.20  29
PPM 165315     18:10:23.2 +02:31:46  8.7  0.14  29
07LG38         18:10:51.3 +02:27:43 15.6        29
Positions are for J2000

Event circumstances last updated at 2018/10/26 21:05:11 UT

Marc W. Buie, Southwest Research Institute

RECON