RECON: TNO occultation with 01KO77

Event between 01KO77 and star GA0740:13159081 with event index number of 189494

Geocentric closest approach at 2019/05/15 09:37:56 UTC

J2000 position of star is 17:53:20.2 -15:12:51
Equinox of date position of star is 17:54:25.0 -15:13:02
Stellar brightness G=16.3, use SENSEUP=128
Star is 79 degrees from the moon. Moon is 85% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 37.5 AU from the Sun and 36.7 AU from the Earth.
The TNO is moving 19.6 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 308 seconds.
The 1-sigma cross-track error in the shadow position is 3445 km.
The sky-plane scale is 26623.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.6
Diameter=184.5 km assuming a 5% albedo -- 9.4 sec chord
Diameter=75.3 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 01KO77, (2019/05/15 09:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.9 -26:28:24  0.9 22.54  62
35Eta Oph      17:11:29.4 -15:44:51  2.6 10.36  69
PPM 233766     17:57:25.9 -15:48:52  6.1  0.93  80
PPM 233690     17:53:10.8 -15:01:47  8.2  0.36  79
PPM 233721     17:55:12.8 -14:54:38  8.8  0.36  79
01KO77         17:54:26.8 -15:13:02 16.3        79
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 2.9 sigma about the mid-time.
The median site spacing is 12.7 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 09:39:37 -17.4 AT Up 24.3 169.4 Low 09:24:37 - 09:54:37 -1289
Summerland 09:39:38 -17.5 AT Up 24.3 169.0 Low 09:24:38 - 09:54:38 -1298
Penticton 09:39:38 -17.8 AT Up 24.6 169.2 Low 09:24:38 - 09:54:38 -1310
Okanagan Falls 09:39:37 -17.9 AT Up 24.8 169.2 Low 09:24:37 - 09:54:37 -1320
Oliver 09:39:37 -18.1 Dark Up 25.0 169.2 Low 09:24:37 - 09:54:37 -1328
Anarchist Mountain Observatory 09:39:37 -18.2 Dark Up 25.2 169.4 Low 09:24:37 - 09:54:37 -1333
Oroville 09:39:37 -18.3 Dark Up 25.2 169.3 Low 09:24:37 - 09:54:37 -1338
Tonasket 09:39:37 -18.5 Dark Up 25.5 169.3 Low 09:24:37 - 09:54:37 -1350
Okanogan 09:39:38 -18.8 Dark Up 25.8 169.1 Low 09:24:38 - 09:54:38 -1370
Brewster 09:39:39 -19.1 Dark Up 26.0 168.8 Low 09:24:39 - 09:54:39 -1388
Manson/Chelan 09:39:40 -19.4 Dark Up 26.2 168.4 Low 09:24:40 - 09:54:40 -1406
Entiat 09:39:41 -19.6 Dark Up 26.4 168.3 Low 09:24:41 - 09:54:41 -1419
Wenatchee 09:39:41 -19.9 Dark Up 26.6 168.2 Low 09:24:41 - 09:54:41 -1435
Ellensburg 09:39:41 -20.3 Dark Up 27.0 167.9 Low 09:24:41 - 09:54:41 -1462
Pasco 09:39:37 -20.6 Dark Up 27.9 169.4 Low 09:24:37 - 09:54:37 -1474
PNWRO 09:39:36 -20.7 Dark Up 28.2 169.6 Low 09:24:36 - 09:54:36 -1483
Yakima 09:39:42 -20.7 Dark Up 27.4 167.9 Low 09:24:42 - 09:54:42 -1484
Toppenish/White Swan 09:39:41 -20.8 Dark Up 27.6 168.0 Low 09:24:41 - 09:54:41 -1493
George/Umatilla 09:39:37 -20.9 Dark Up 28.2 169.1 Low 09:24:37 - 09:54:37 -1497
Goldendale 09:39:43 -21.5 Dark Up 28.1 167.5 Low 09:24:43 - 09:54:43 -1532
The Dalles 09:39:44 -21.8 Dark Up 28.3 167.1 Low 09:24:44 - 09:54:44 -1553
Niwot 09:38:39 -20.1 Dark Up 34.6 184.7 Up 09:23:39 - 09:53:39 -1571
Maupin 09:39:44 -22.1 Dark Up 28.7 167.2 Low 09:24:44 - 09:54:44 -1574
Madras/Culver 09:39:44 -22.6 Dark Up 29.2 167.1 Low 09:24:44 - 09:54:44 -1607
Redmond 09:39:44 -23.0 Dark Up 29.6 167.0 Low 09:24:44 - 09:54:44 -1629
Sisters 09:39:46 -23.1 Dark Up 29.5 166.5 Low 09:24:46 - 09:54:46 -1636
Bend 09:39:45 -23.2 Dark Up 29.7 166.8 Low 09:24:45 - 09:54:45 -1645
Oregon Observatory 09:39:46 -23.4 Dark Up 29.9 166.6 Low 09:24:46 - 09:54:46 -1658
La Pine/Gilchrist 09:39:46 -23.6 Dark Up 30.1 166.5 Up 09:24:46 - 09:54:46 -1671
North Lake 09:39:44 -23.8 Dark Up 30.6 167.1 Up 09:24:44 - 09:54:44 -1685
Paisley 09:39:42 -24.2 Dark Up 31.2 167.4 Up 09:24:42 - 09:54:42 -1710
Lakeview 09:39:41 -24.6 Dark Up 31.7 167.6 Up 09:24:41 - 09:54:41 -1738
Chiloquin 09:39:48 -24.7 Dark Up 31.1 166.0 Up 09:24:48 - 09:54:48 -1747
Klamath Falls 09:39:47 -25.0 Dark Up 31.4 166.0 Up 09:24:47 - 09:54:47 -1766
Cedarville 09:39:41 -25.1 Dark Up 32.4 167.7 Up 09:24:41 - 09:54:41 -1775
Tulelake 09:39:46 -25.2 Dark Up 31.8 166.3 Up 09:24:46 - 09:54:46 -1776
Fall River/Burney 09:39:46 -26.0 Dark Up 32.7 166.3 Up 09:24:46 - 09:54:46 -1832
Susanville 09:39:43 -26.3 Dark Up 33.4 167.0 Up 09:24:43 - 09:54:43 -1856
Gimple 09:39:44 -26.6 Dark Up 33.6 166.7 Up 09:24:44 - 09:54:44 -1879
Greenville 09:39:44 -26.6 Dark Up 33.6 166.6 Up 09:24:44 - 09:54:44 -1881
Portola 09:39:43 -26.8 Dark Up 34.0 167.1 Up 09:24:43 - 09:54:43 -1892
Quincy 09:39:44 -26.8 Dark Up 33.8 166.6 Up 09:24:44 - 09:54:44 -1894
Reno 09:39:39 -26.8 Dark Up 34.4 167.8 Up 09:24:39 - 09:54:39 -1894
Yerington 09:39:37 -27.0 Dark Up 35.0 168.5 Up 09:24:37 - 09:54:37 -1916
Carson City 09:39:40 -27.1 Dark Up 34.7 167.8 Up 09:24:40 - 09:54:40 -1918
Gardnerville 09:39:39 -27.3 Dark Up 35.0 167.8 Up 09:24:39 - 09:54:39 -1933
Hawthorne 09:39:35 -27.2 Dark Up 35.6 169.0 Up 09:24:35 - 09:54:35 -1936
Tonopah 09:39:28 -27.1 Dark Up 36.2 170.6 Up 09:24:28 - 09:54:28 -1936
Lee Vining 09:39:37 -27.9 Dark Up 36.0 168.4 Up 09:24:37 - 09:54:37 -1985
Indian Springs 09:39:21 -27.7 Dark Up 37.9 172.2 Up 09:24:21 - 09:54:21 -2003
Beatty 09:39:26 -27.9 Dark Up 37.4 171.0 Up 09:24:26 - 09:54:26 -2004
Bishop 09:39:34 -28.2 Dark Up 36.7 169.1 Up 09:24:34 - 09:54:34 -2009
Henderson 09:39:18 -27.9 Dark Up 38.5 173.0 Up 09:24:18 - 09:54:18 -2025
Patrick 09:39:13 -27.9 Dark Up 39.2 174.3 Up 09:24:13 - 09:54:13 -2045
DCO 09:39:09 -27.8 Dark Up 39.5 175.2 Up 09:24:09 - 09:54:09 -2051
Lone Pine 09:39:32 -28.7 Dark Up 37.5 169.4 Up 09:24:32 - 09:54:32 -2054
Searchlight/Boulder City 09:39:18 -28.3 Dark Up 39.0 173.0 Up 09:24:18 - 09:54:18 -2064
Kingman/Dolan Springs 09:39:13 -28.2 Dark Up 39.4 174.1 Up 09:24:13 - 09:54:13 -2064
Laughlin/Bullhead City 09:39:16 -28.4 Dark Up 39.4 173.4 Up 09:24:16 - 09:54:16 -2077
Mohave Valley 09:39:16 -28.7 Dark Up 39.6 173.4 Up 09:24:16 - 09:54:16 -2096
Lake Havasu City 09:39:15 -28.9 Dark Up 40.1 173.7 Up 09:24:15 - 09:54:15 -2119
Parker 09:39:15 -29.1 Dark Up 40.4 173.7 Up 09:24:15 - 09:54:15 -2144
Blythe 09:39:15 -29.7 Dark Up 40.9 173.3 Up 09:24:15 - 09:54:15 -2188
CPSLO 09:39:43 -30.8 Dark Up 38.4 166.1 Up 09:24:43 - 09:54:43 -2206
Idyllwild 09:39:25 -30.6 Dark Up 40.6 170.6 Up 09:24:25 - 09:54:25 -2228
Wildwood 09:39:34 -31.1 Dark Up 39.9 168.4 Up 09:24:34 - 09:54:34 -2245
Calipatria 09:39:19 -30.6 Dark Up 41.3 172.0 Up 09:24:19 - 09:54:19 -2245
Yuma 09:39:15 -30.5 Dark Up 41.8 173.1 Up 09:24:15 - 09:54:15 -2257

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 01KO77, (2019/05/15 09:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 22.54  62
35Eta Oph      17:10:22.7 -15:43:29  2.6 10.36  69
PPM 233766     17:56:19.0 -15:48:46  6.1  0.93  80
PPM 233690     17:52:04.2 -15:01:34  8.2  0.36  79
PPM 233721     17:54:06.4 -14:54:28  8.8  0.36  79
01KO77         17:53:20.2 -15:12:51 16.3        79
Positions are for J2000

Event circumstances last updated at 2018/11/04 22:28:42 UT

Marc W. Buie, Southwest Research Institute

RECON