RECON: TNO occultation with 470593

Event between (470593) 08LP17 and star GA0660:07953804 with event index number of 190376

Geocentric closest approach at 2019/05/18 06:37:51 UTC

J2000 position of star is 16:47:18.2 -22:26:50
Equinox of date position of star is 16:48:24.6 -22:28:45
Stellar brightness G=15.2, use SENSEUP=128
Star is 24 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=21.0

[RECON map]
TNO is 30.3 AU from the Sun and 29.3 AU from the Earth.
The TNO is moving 21.5 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 108 seconds.
The 1-sigma cross-track error in the shadow position is 1370 km.
The sky-plane scale is 21272.9 km/arcsec.

The TNO has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 16.2 sec chord
Diameter=141.6 km assuming a 30% albedo -- 6.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 470593, (2019/05/18 06:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.9 -26:28:24  0.9  5.70  22
23Tau Sco      16:37:05.5 -28:15:17  2.8  6.32  24
PPM 266088     16:54:34.0 -20:26:47  5.7  2.48  25
PPM 265937     16:47:39.0 -22:39:44  8.4  0.26  24
PPM 265954     16:48:17.5 -22:32:19  9.9  0.07  24
470593         16:48:28.0 -22:28:50 15.2        25
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 12.0 km RECON observability=0.4 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)
Penticton 06:49:28 -19.5 Dark Up 12.2 148.7 Really Low 06:40:00 - 06:58:57 7736
Oroville 06:49:30 -20.1 Dark Up 12.7 148.7 Really Low 06:40:01 - 06:58:58 7713
Tonasket 06:49:30 -20.3 Dark Up 12.9 148.7 Really Low 06:40:02 - 06:58:59 7703
Okanogan 06:49:31 -20.6 Dark Up 13.2 148.5 Really Low 06:40:02 - 06:58:59 7686
Brewster 06:49:32 -20.8 Dark Up 13.3 148.3 Really Low 06:40:04 - 06:59:01 7670
Manson/Chelan 06:49:34 -20.9 Dark Up 13.4 148.0 Really Low 06:40:05 - 06:59:02 7654
Entiat 06:49:34 -21.1 Dark Up 13.5 147.9 Really Low 06:40:06 - 06:59:03 7643
Wenatchee 06:49:35 -21.4 Dark Up 13.7 147.8 Really Low 06:40:06 - 06:59:03 7629
Ellensburg 06:49:36 -21.7 Dark Up 14.0 147.5 Really Low 06:40:08 - 06:59:05 7606
Pasco 06:49:34 -22.7 Dark Up 15.1 148.7 Really Low 06:40:06 - 06:59:03 7598
PNWRO 06:49:34 -23.0 Dark Up 15.4 148.8 Really Low 06:40:05 - 06:59:02 7591
Yakima 06:49:37 -22.1 Dark Up 14.3 147.5 Really Low 06:40:09 - 06:59:06 7587
Toppenish/White Swan 06:49:38 -22.3 Dark Up 14.6 147.6 Really Low 06:40:09 - 06:59:06 7580
George/Umatilla 06:49:35 -23.0 Dark Up 15.3 148.4 Really Low 06:40:06 - 06:59:03 7578
Goldendale 06:49:39 -22.8 Dark Up 14.9 147.1 Really Low 06:40:10 - 06:59:07 7545
The Dalles 06:49:41 -22.9 Dark Up 14.9 146.8 Really Low 06:40:13 - 06:59:10 7527
Niwot 06:48:57 -30.4 Dark Up 25.0 160.5 Low 06:39:28 - 06:58:25 7521
Maupin 06:49:42 -23.3 Dark Up 15.3 146.8 Really Low 06:40:13 - 06:59:10 7509
Madras/Culver 06:49:43 -23.8 Dark Up 15.8 146.7 Really Low 06:40:14 - 06:59:11 7481
Redmond 06:49:43 -24.2 Dark Up 16.0 146.6 Really Low 06:40:15 - 06:59:12 7462
Sisters 06:49:45 -24.1 Dark Up 15.9 146.3 Really Low 06:40:17 - 06:59:14 7455
Bend 06:49:45 -24.3 Dark Up 16.2 146.5 Really Low 06:40:16 - 06:59:13 7448
Oregon Observatory 06:49:45 -24.5 Dark Up 16.3 146.3 Really Low 06:40:17 - 06:59:14 7436
La Pine/Gilchrist 06:49:46 -24.7 Dark Up 16.4 146.2 Really Low 06:40:17 - 06:59:14 7424
North Lake 06:49:45 -25.2 Dark Up 17.0 146.7 Really Low 06:40:17 - 06:59:14 7414
Paisley 06:49:45 -25.8 Dark Up 17.6 146.9 Really Low 06:40:17 - 06:59:14 7392
Lakeview 06:49:45 -26.3 Dark Up 18.1 147.0 Really Low 06:40:17 - 06:59:14 7369
Chiloquin 06:49:49 -25.6 Dark Up 17.2 145.8 Really Low 06:40:20 - 06:59:17 7358
Klamath Falls 06:49:49 -26.0 Dark Up 17.5 145.8 Really Low 06:40:21 - 06:59:18 7341
Cedarville 06:49:46 -27.0 Dark Up 18.7 147.0 Really Low 06:40:17 - 06:59:14 7336
Tulelake 06:49:49 -26.3 Dark Up 17.9 146.0 Really Low 06:40:20 - 06:59:17 7333
Fall River/Burney 06:49:51 -27.2 Dark Up 18.6 145.9 Really Low 06:40:22 - 06:59:19 7284
Susanville 06:49:49 -28.0 Dark Up 19.5 146.4 Really Low 06:40:21 - 06:59:18 7264
Gimple 06:49:51 -28.2 Dark Up 19.6 146.2 Really Low 06:40:22 - 06:59:19 7244
Greenville 06:49:51 -28.1 Dark Up 19.6 146.1 Really Low 06:40:22 - 06:59:19 7242
Portola 06:49:50 -28.6 Dark Up 20.1 146.5 Low 06:40:21 - 06:59:18 7233
Reno 06:49:48 -29.0 Dark Up 20.6 147.0 Low 06:40:20 - 06:59:17 7231
Quincy 06:49:51 -28.3 Dark Up 19.8 146.1 Really Low 06:40:23 - 06:59:20 7230
Yerington 06:49:46 -29.7 Dark Up 21.3 147.4 Low 06:40:17 - 06:59:14 7213
Carson City 06:49:49 -29.3 Dark Up 20.9 146.9 Low 06:40:20 - 06:59:17 7211
Tonopah 06:49:42 -31.0 Dark Up 22.9 149.0 Low 06:40:13 - 06:59:10 7198
Gardnerville 06:49:49 -29.6 Dark Up 21.1 146.9 Low 06:40:20 - 06:59:17 7198
Hawthorne 06:49:46 -30.2 Dark Up 21.9 147.8 Low 06:40:17 - 06:59:14 7197
Lee Vining 06:49:49 -30.7 Dark Up 22.2 147.3 Low 06:40:20 - 06:59:17 7152
Indian Springs 06:49:39 -32.7 Dark Up 24.8 150.0 Low 06:40:10 - 06:59:07 7139
Beatty 06:49:42 -32.2 Dark Up 24.1 149.1 Low 06:40:13 - 06:59:10 7137
Bishop 06:49:47 -31.4 Dark Up 23.0 147.8 Low 06:40:19 - 06:59:16 7131
Henderson 06:49:37 -33.4 Dark Up 25.5 150.5 Low 06:40:09 - 06:59:06 7119
Patrick 06:49:34 -34.2 Dark Up 26.5 151.4 Low 06:40:06 - 06:59:03 7102
DCO 06:49:31 -34.6 Dark Up 27.0 152.0 Low 06:40:03 - 06:59:00 7096
Lone Pine 06:49:47 -32.2 Dark Up 23.8 147.9 Low 06:40:19 - 06:59:16 7091
Searchlight/Boulder City 06:49:37 -33.9 Dark Up 26.0 150.4 Low 06:40:09 - 06:59:06 7085
Kingman/Dolan Springs 06:49:35 -34.4 Dark Up 26.6 151.2 Low 06:40:06 - 06:59:03 7084
Laughlin/Bullhead City 06:49:37 -34.3 Dark Up 26.4 150.7 Low 06:40:08 - 06:59:05 7073
Mohave Valley 06:49:37 -34.6 Dark Up 26.7 150.6 Low 06:40:09 - 06:59:06 7055
Lake Havasu City 06:49:37 -35.0 Dark Up 27.1 150.8 Low 06:40:08 - 06:59:05 7035
Parker 06:49:36 -35.3 Dark Up 27.4 150.7 Low 06:40:08 - 06:59:05 7013
Blythe 06:49:39 -35.8 Dark Up 27.8 150.3 Low 06:40:10 - 06:59:07 6972
CPSLO 06:49:58 -32.8 Dark Up 23.7 145.3 Low 06:40:29 - 06:59:26 6952
Idyllwild 06:49:46 -35.3 Dark Up 26.8 148.4 Low 06:40:18 - 06:59:15 6936
Calipatria 06:49:42 -36.1 Dark Up 27.8 149.3 Low 06:40:14 - 06:59:11 6920
Wildwood 06:49:53 -34.5 Dark Up 25.7 146.8 Low 06:40:24 - 06:59:21 6919
Yuma 06:49:40 -36.7 Dark Up 28.6 150.0 Low 06:40:12 - 06:59:09 6910

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 470593, (2019/05/18 06:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  5.70  22
23Tau Sco      16:35:53.0 -28:12:58  2.8  6.32  24
PPM 266088     16:53:25.2 -20:24:57  5.7  2.48  25
PPM 265937     16:46:29.2 -22:37:42  8.4  0.26  24
PPM 265954     16:47:07.7 -22:30:19  9.9  0.07  24
470593         16:47:18.2 -22:26:50 15.2        24
Positions are for J2000

Event circumstances last updated at 2018/06/11 23:13:23 UT

Marc W. Buie, Southwest Research Institute

RECON