RECON: TNO occultation with 120061

Event between (120061) 03CO1 and star UC4-282-209334 with event index number of 147929

Geocentric closest approach at 2018/08/20 05:41:11 UTC

J2000 position of star is 19:42:12.8 -33:45:20
Equinox of date position of star is 19:43:22.3 -33:42:44
Stellar brightness R=16.5, use SENSEUP=128
Star is 36 degrees from the moon. Moon is 69% illuminated.
TNO apparent brightness V=21.5

[RECON map]
TNO is 17.6 AU from the Sun and 16.8 AU from the Earth.
The TNO is moving 17.2 km/sec on the sky relative to the star, or, 5.1 arcsec/hr.
The 1-sigma error in the time of the event is 607 seconds.
The 1-sigma cross-track error in the shadow position is 1610 km.
The sky-plane scale is 12169.1 km/arcsec.

The TNO has an absolute magnitude Hv=8.9
Diameter=100.0 km assuming a 5% albedo -- 5.8 sec chord
Diameter=40.8 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 120061, (2018/08/20 05:41UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:40.6 -29:31:23  1.2 41.40  78
38Zet Sgr      19:03:47.7 -29:51:07  2.7  9.26  27
PPM 299365     19:47:12.4 -31:51:44  5.5  2.01  37
PPM 299314     19:44:34.3 -33:36:03  7.6  0.26  36
120061         19:43:25.1 -33:42:38 16.5        36
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 1.5 sigma about the mid-time.
The median site spacing is 10.9 km RECON observability=0.2 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)
Oroville 05:40:50 -21.2 Dark Up 7.3 178.9 Really Low 05:25:50 - 05:55:50 6871
Tonasket 05:40:50 -21.4 Dark Up 7.5 178.9 Really Low 05:25:50 - 05:55:50 6867
Okanogan 05:40:51 -21.6 Dark Up 7.9 178.8 Really Low 05:25:51 - 05:55:51 6863
Brewster 05:40:53 -21.8 Dark Up 8.1 178.7 Really Low 05:25:53 - 05:55:53 6860
Manson/Chelan 05:40:54 -21.8 Dark Up 8.3 178.3 Really Low 05:25:54 - 05:55:54 6858
Entiat 05:40:54 -21.9 Dark Up 8.6 178.3 Really Low 05:25:54 - 05:55:54 6855
Wenatchee 05:40:54 -22.1 Dark Up 8.8 178.2 Really Low 05:25:54 - 05:55:54 6851
Ellensburg 05:40:56 -22.3 Dark Up 9.2 178.0 Really Low 05:25:56 - 05:55:56 6844
Yakima 05:40:56 -22.6 Dark Up 9.6 178.0 Really Low 05:25:56 - 05:55:56 6837
Toppenish/White Swan 05:40:55 -22.9 Dark Up 9.8 178.1 Really Low 05:25:55 - 05:55:55 6832
Pasco 05:40:50 -23.5 Dark Up 10.0 179.2 Really Low 05:25:50 - 05:55:50 6825
Goldendale 05:40:57 -23.1 Dark Up 10.4 177.8 Really Low 05:25:57 - 05:55:57 6823
The Dalles 05:40:58 -23.1 Dark Up 10.6 177.5 Really Low 05:25:58 - 05:55:58 6820
George/Umatilla 05:40:51 -23.7 Dark Up 10.3 179.0 Really Low 05:25:51 - 05:55:51 6819
PNWRO 05:40:49 -23.8 Dark Up 10.2 179.4 Really Low 05:25:49 - 05:55:49 6819
Maupin 05:40:58 -23.5 Dark Up 11.0 177.6 Really Low 05:25:58 - 05:55:58 6811
Madras/Culver 05:40:59 -23.9 Dark Up 11.6 177.5 Really Low 05:25:59 - 05:55:59 6799
Sisters 05:41:01 -24.0 Dark Up 11.9 177.1 Really Low 05:26:01 - 05:56:01 6793
Redmond 05:40:59 -24.2 Dark Up 11.9 177.5 Really Low 05:25:59 - 05:55:59 6791
Bend 05:41:00 -24.3 Dark Up 12.1 177.4 Really Low 05:26:00 - 05:56:00 6787
Oregon Observatory 05:41:01 -24.3 Dark Up 12.3 177.3 Really Low 05:26:01 - 05:56:01 6783
La Pine/Gilchrist 05:41:01 -24.5 Dark Up 12.5 177.2 Really Low 05:26:01 - 05:56:01 6779
North Lake 05:40:58 -25.1 Dark Up 13.0 177.7 Really Low 05:25:58 - 05:55:58 6766
Chiloquin 05:41:03 -25.1 Dark Up 13.6 176.9 Really Low 05:26:03 - 05:56:03 6752
Paisley 05:40:57 -25.7 Dark Up 13.5 178.0 Really Low 05:25:57 - 05:55:57 6751
Klamath Falls 05:41:03 -25.4 Dark Up 13.9 177.0 Really Low 05:26:03 - 05:56:03 6743
Lakeview 05:40:56 -26.2 Dark Up 14.0 178.2 Really Low 05:25:56 - 05:55:56 6737
Tulelake 05:41:01 -25.8 Dark Up 14.2 177.2 Really Low 05:26:01 - 05:56:01 6735
Cedarville 05:40:56 -26.7 Dark Up 14.7 178.3 Really Low 05:25:56 - 05:55:56 6718
Fall River/Burney 05:41:01 -26.5 Dark Up 15.1 177.3 Really Low 05:26:01 - 05:56:01 6709
Susanville 05:40:58 -27.4 Dark Up 15.8 177.9 Really Low 05:25:58 - 05:55:58 6687
Greenville 05:41:00 -27.4 Dark Up 16.1 177.6 Really Low 05:26:00 - 05:56:00 6680
Gimple 05:41:00 -27.5 Dark Up 16.1 177.7 Really Low 05:26:00 - 05:56:00 6680
Quincy 05:41:00 -27.6 Dark Up 16.3 177.6 Really Low 05:26:00 - 05:56:00 6674
Portola 05:40:58 -27.9 Dark Up 16.4 178.0 Really Low 05:25:58 - 05:55:58 6668
Reno 05:40:54 -28.4 Dark Up 16.7 178.6 Really Low 05:25:54 - 05:55:54 6657
Carson City 05:40:54 -28.7 Dark Up 17.0 178.6 Really Low 05:25:54 - 05:55:54 6645
Gardnerville 05:40:54 -28.9 Dark Up 17.3 178.6 Really Low 05:25:54 - 05:55:54 6637
Yerington 05:40:52 -29.2 Dark Up 17.2 179.1 Really Low 05:25:52 - 05:55:52 6636
Hawthorne 05:40:49 -29.8 Dark Up 17.7 179.6 Really Low 05:25:49 - 05:55:49 6617
Lee Vining 05:40:52 -30.0 Dark Up 18.3 179.2 Really Low 05:25:52 - 05:55:52 6601
Tonopah 05:40:42 -30.8 Dark Up 18.2 180.8 Really Low 05:25:42 - 05:55:42 6592
Bishop 05:40:48 -30.8 Dark Up 18.9 179.8 Really Low 05:25:48 - 05:55:48 6575
Beatty 05:40:40 -32.0 Dark Up 19.3 181.2 Really Low 05:25:40 - 05:55:40 6548
Lone Pine 05:40:46 -31.6 Dark Up 19.6 180.1 Really Low 05:25:46 - 05:55:46 6546
Indian Springs 05:40:35 -32.7 Dark Up 19.6 182.1 Really Low 05:25:35 - 05:55:35 6527
Niwot 05:39:45 -33.9 Dark Up 15.2 191.0 Really Low 05:24:45 - 05:54:45 6521
CPSLO 05:41:00 -31.2 Dark Up 20.9 177.8 Low 05:26:00 - 05:56:00 6510
Henderson 05:40:31 -33.5 Dark Up 20.1 182.8 Low 05:25:31 - 05:55:31 6500
Searchlight/Boulder City 05:40:31 -34.0 Dark Up 20.7 182.8 Low 05:25:31 - 05:55:31 6477
Patrick 05:40:26 -34.5 Dark Up 20.7 183.7 Low 05:25:26 - 05:55:26 6465
Laughlin/Bullhead City 05:40:29 -34.4 Dark Up 21.0 183.1 Low 05:25:29 - 05:55:29 6462
Kingman/Dolan Springs 05:40:26 -34.6 Dark Up 21.0 183.6 Low 05:25:26 - 05:55:26 6458
Mohave Valley 05:40:29 -34.6 Dark Up 21.3 183.1 Low 05:25:29 - 05:55:29 6451
Wildwood 05:40:50 -33.2 Dark Up 22.1 179.6 Low 05:25:50 - 05:55:50 6450
DCO 05:40:22 -35.1 Dark Up 21.0 184.4 Low 05:25:22 - 05:55:22 6446
Lake Havasu City 05:40:28 -35.1 Dark Up 21.7 183.4 Low 05:25:28 - 05:55:28 6432
Idyllwild 05:40:40 -34.5 Dark Up 22.5 181.3 Low 05:25:40 - 05:55:40 6421
Parker 05:40:28 -35.4 Dark Up 22.0 183.4 Low 05:25:28 - 05:55:28 6417
Blythe 05:40:29 -35.6 Dark Up 22.5 183.1 Low 05:25:29 - 05:55:29 6398
Calipatria 05:40:34 -35.5 Dark Up 23.1 182.3 Low 05:25:34 - 05:55:34 6385
Yuma 05:40:30 -36.3 Dark Up 23.5 183.1 Low 05:25:30 - 05:55:30 6358

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 120061, (2018/08/20 05:41UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 41.40  78
38Zet Sgr      19:02:36.7 -29:52:49  2.7  9.26  27
PPM 299365     19:46:01.2 -31:54:31  5.5  2.01  37
PPM 299314     19:43:22.1 -33:38:47  7.6  0.26  36
120061         19:42:12.8 -33:45:20 16.5        36
Positions are for J2000

Event circumstances last updated at 2017/12/05 18:53:10 UT

Marc W. Buie, Southwest Research Institute

RECON