RECON: TNO occultation with 13AZ60

Event between 13AZ60 and star UC4-340-067990 with event index number of 109380

Geocentric closest approach at 2018/03/06 09:49:24 UTC

J2000 position of star is 13:38:20.5 -22:05:23
Equinox of date position of star is 13:39:17.9 -22:10:40
Stellar brightness R=13.2, use SENSEUP=32
Star is 19 degrees from the moon. Moon is 78% illuminated.
TNO apparent brightness V=20.7

[RECON map]
TNO is 10.6 AU from the Sun and 9.9 AU from the Earth.
The TNO is moving 12.2 km/sec on the sky relative to the star, or, 6.1 arcsec/hr.
The 1-sigma error in the time of the event is 69 seconds.
The 1-sigma cross-track error in the shadow position is 974 km.
The sky-plane scale is 7167.2 km/arcsec.

The TNO has an absolute magnitude Hv=10.3
Diameter=53.5 km assuming a 5% albedo -- 4.4 sec chord
Diameter=21.8 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 13AZ60, (2018/03/06 09:49UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:09.2 -11:15:20  1.0 11.37  19
PPM 261719     13:30:42.6 -23:22:29  5.9  2.32  21
PPM 261853     13:37:51.5 -21:47:42  8.3  0.52  19
PPM 261888     13:39:21.1 -22:16:18  9.7  0.09  19
13AZ60         13:39:20.5 -22:10:54 13.2        19
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 5.0 sigma about the mid-time.
The median site spacing is 12.6 km RECON observability=0.9 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 09:49:11 -41.8 Dark Up 18.1 167.7 Really Low 09:42:58 - 09:55:25 6145
Tonasket 09:49:13 -42.0 Dark Up 18.3 167.7 Really Low 09:42:59 - 09:55:26 6137
Okanogan 09:49:15 -42.3 Dark Up 18.6 167.5 Really Low 09:43:01 - 09:55:28 6127
Brewster 09:49:15 -42.6 Dark Up 18.9 167.3 Really Low 09:43:02 - 09:55:29 6119
Manson/Chelan 09:49:19 -42.9 Dark Up 19.0 166.9 Really Low 09:43:05 - 09:55:32 6114
Entiat 09:49:19 -43.1 Dark Up 19.2 166.9 Really Low 09:43:06 - 09:55:33 6107
Wenatchee 09:49:20 -43.3 Dark Up 19.4 166.7 Really Low 09:43:07 - 09:55:34 6099
Ellensburg 09:49:22 -43.8 Dark Up 19.8 166.5 Really Low 09:43:08 - 09:55:35 6086
Yakima 09:49:23 -44.1 Dark Up 20.2 166.5 Low 09:43:10 - 09:55:37 6071
Toppenish/White Swan 09:49:23 -44.2 Dark Up 20.4 166.6 Low 09:43:10 - 09:55:37 6061
Pasco 09:49:15 -43.8 Dark Up 20.8 167.8 Low 09:43:02 - 09:55:29 6048
Goldendale 09:49:23 -44.8 Dark Up 20.9 166.1 Low 09:43:10 - 09:55:37 6043
The Dalles 09:49:23 -45.2 Dark Up 21.1 165.8 Low 09:43:10 - 09:55:37 6037
PNWRO 09:49:15 -43.9 Dark Up 21.0 168.0 Low 09:43:01 - 09:55:28 6037
George/Umatilla 09:49:18 -44.2 Dark Up 21.0 167.6 Low 09:43:04 - 09:55:31 6037
Maupin 09:49:23 -45.5 Dark Up 21.5 165.8 Low 09:43:10 - 09:55:37 6020
Madras/Culver 09:49:23 -45.9 Dark Up 22.0 165.7 Low 09:43:10 - 09:55:37 5999
Sisters 09:49:23 -46.4 Dark Up 22.3 165.3 Low 09:43:10 - 09:55:37 5989
Redmond 09:49:23 -46.3 Dark Up 22.4 165.6 Low 09:43:10 - 09:55:37 5985
Bend 09:49:23 -46.5 Dark Up 22.5 165.5 Low 09:43:10 - 09:55:37 5978
Oregon Observatory 09:49:23 -46.7 Dark Up 22.7 165.3 Low 09:43:10 - 09:55:37 5972
La Pine/Gilchrist 09:49:23 -46.9 Dark Up 22.9 165.3 Low 09:43:10 - 09:55:37 5964
North Lake 09:49:23 -47.0 Dark Up 23.4 165.8 Low 09:43:10 - 09:55:37 5941
Chiloquin 09:49:23 -47.9 Dark Up 23.9 164.8 Low 09:43:10 - 09:55:37 5920
Paisley 09:49:23 -47.3 Dark Up 24.0 166.1 Low 09:43:10 - 09:55:37 5914
Klamath Falls 09:49:23 -48.2 Dark Up 24.2 164.8 Low 09:43:10 - 09:55:37 5904
Lakeview 09:49:23 -47.6 Dark Up 24.5 166.2 Low 09:43:10 - 09:55:37 5890
Tulelake 09:49:23 -48.3 Dark Up 24.5 165.1 Low 09:43:10 - 09:55:37 5890
Cedarville 09:49:23 -48.0 Dark Up 25.2 166.3 Low 09:43:10 - 09:55:37 5859
Fall River/Burney 09:49:40 -48.9 Dark Up 25.4 165.1 Low 09:43:27 - 09:55:54 5844
Susanville 09:49:23 -49.1 Dark Up 26.2 165.7 Low 09:43:10 - 09:55:37 5811
Greenville 09:49:23 -49.5 Dark Up 26.4 165.4 Low 09:43:10 - 09:55:37 5801
Gimple 09:49:23 -49.5 Dark Up 26.4 165.5 Low 09:43:10 - 09:55:37 5800
Quincy 09:49:23 -49.6 Dark Up 26.6 165.4 Low 09:43:10 - 09:55:37 5791
Portola 09:49:23 -49.5 Dark Up 26.8 165.8 Low 09:43:10 - 09:55:37 5781
Reno 09:49:23 -49.4 Dark Up 27.2 166.5 Low 09:43:10 - 09:55:37 5762
Carson City 09:49:23 -49.7 Dark Up 27.5 166.5 Low 09:43:10 - 09:55:37 5744
Gardnerville 09:49:23 -49.8 Dark Up 27.8 166.5 Low 09:43:10 - 09:55:37 5731
Yerington 09:49:23 -49.5 Dark Up 27.8 167.1 Low 09:43:10 - 09:55:37 5728
Hawthorne 09:49:23 -49.6 Dark Up 28.4 167.6 Low 09:43:10 - 09:55:37 5699
Lee Vining 09:49:23 -50.3 Dark Up 28.9 167.0 Low 09:43:10 - 09:55:37 5675
Tonopah 09:49:18 -49.2 Dark Up 29.1 169.0 Low 09:43:05 - 09:55:32 5663
Bishop 09:49:23 -50.3 Dark Up 29.6 167.7 Low 09:43:10 - 09:55:37 5636
Niwot 09:47:55 -40.9 Dark Up 27.8 181.4 Low 09:41:41 - 09:54:08 5618
Beatty 09:49:18 -49.7 Dark Up 30.3 169.3 Up 09:43:05 - 09:55:32 5596
Lone Pine 09:49:23 -50.7 Dark Up 30.4 167.9 Up 09:43:10 - 09:55:37 5592
Indian Springs 09:49:10 -49.3 Dark Up 30.7 170.4 Up 09:42:57 - 09:55:24 5567
CPSLO 09:49:48 -53.0 Dark Up 31.2 165.1 Up 09:43:34 - 09:56:01 5540
Henderson 09:49:06 -49.3 Dark Up 31.4 171.1 Up 09:42:53 - 09:55:20 5529
Searchlight/Boulder City 09:49:07 -49.6 Dark Up 31.9 171.1 Up 09:42:54 - 09:55:21 5496
Patrick 09:49:00 -49.0 Dark Up 32.1 172.2 Up 09:42:46 - 09:55:13 5481
Laughlin/Bullhead City 09:49:05 -49.6 Dark Up 32.3 171.4 Up 09:42:51 - 09:55:18 5475
Kingman/Dolan Springs 09:49:01 -49.3 Dark Up 32.3 172.0 Up 09:42:48 - 09:55:15 5471
Mohave Valley 09:49:05 -49.8 Dark Up 32.5 171.4 Up 09:42:52 - 09:55:19 5459
Wildwood 09:49:23 -52.7 Dark Up 32.7 167.0 Up 09:43:10 - 09:55:37 5456
DCO 09:48:55 -48.8 Dark Up 32.5 172.9 Up 09:42:42 - 09:55:09 5455
Lake Havasu City 09:49:04 -49.9 Dark Up 33.0 171.7 Up 09:42:50 - 09:55:17 5433
Idyllwild 09:49:22 -51.8 Dark Up 33.4 169.0 Up 09:43:09 - 09:55:36 5415
Parker 09:49:04 -50.1 Dark Up 33.3 171.7 Up 09:42:51 - 09:55:18 5411
Blythe 09:49:07 -50.6 Dark Up 33.8 171.3 Up 09:42:54 - 09:55:21 5384
Calipatria 09:49:15 -51.5 Dark Up 34.2 170.2 Up 09:43:02 - 09:55:29 5364
Yuma 09:49:10 -51.2 Dark Up 34.7 171.2 Up 09:42:56 - 09:55:23 5328

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 13AZ60, (2018/03/06 09:49UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 11.37  19
PPM 261719     13:29:42.7 -23:16:52  5.9  2.32  21
PPM 261853     13:36:51.6 -21:42:10  8.3  0.52  19
PPM 261888     13:38:21.0 -22:10:48  9.7  0.09  19
13AZ60         13:38:20.5 -22:05:23 13.2        19
Positions are for J2000

Event circumstances last updated at 2017/05/17 18:03:10 UT

Marc W. Buie, Southwest Research Institute

RECON